阅读说明：本技术 透光显示面板和显示面板 (Light-transmitting display panel and display panel ) 是由 朱超 范文志 蔡伟民 董正逵 吴敏 周梦怡 施文峰 于 2020-06-17 设计创作，主要内容包括：本申请实施例的提供一种透光显示面板和显示面板,该透光显示面板包括阵列排布的像素单元,每个像素单元包括至少一种颜色的子像素和覆盖在相应子像素上的彩色滤光单元；彩色滤光单元的透射光谱与相应子像素发光的发射光谱至少部分重叠,且在透光显示面板的层叠方向上,彩色滤光单元的正投影与子像素的正投影至少部分重叠。通过在子像素上覆盖相应的彩色滤光单元,替代现有技术中的偏光片,提高透光显示面板的光线的透过率。(The embodiment of the application provides a light-transmitting display panel and a display panel, wherein the light-transmitting display panel comprises pixel units which are arranged in an array mode, each pixel unit comprises at least one color sub-pixel and a color filter unit which covers the corresponding sub-pixel; the transmission spectrum of the color filter unit at least partially overlaps with the emission spectrum of the corresponding sub-pixel, and the orthographic projection of the color filter unit at least partially overlaps with the orthographic projection of the sub-pixel in the laminating direction of the light-transmitting display panel. The sub-pixels are covered with corresponding color filter units to replace a polarizer in the prior art, so that the transmittance of light of the light-transmitting display panel is improved.)

1. A light-transmitting display panel is characterized by comprising pixel units arranged in an array, wherein each pixel unit comprises at least one color sub-pixel and a color filter unit covering the corresponding sub-pixel;

the transmission spectrum of the color filter unit at least partially overlaps with the emission spectrum of the corresponding sub-pixel, and the orthographic projection of the color filter unit at least partially overlaps with the orthographic projection of the sub-pixel in the laminating direction of the light-transmitting display panel.

2. A light-transmissive display panel according to claim 1, wherein the sub-pixel comprises a first electrode, a light-emitting layer, and a second electrode which are stacked;

the color filter unit is arranged on one side of the second electrode, which is far away from the light-emitting layer;

in the laminating direction, the orthographic projection of the color filter unit is completely overlapped with the orthographic projection of the first electrode;

preferably, the first electrode comprises a reflective electrode and the second electrode comprises a semi-transparent semi-reflective electrode;

preferably, the first electrode is an anode and the second electrode is a cathode.

3. A transmissive display panel in accordance with claim 1, wherein the pixel unit comprises at least one red sub-pixel, one green sub-pixel and one blue sub-pixel; the red sub-pixel is correspondingly provided with a red light filtering unit, the green sub-pixel is correspondingly provided with a green light filtering unit, and the blue sub-pixel is correspondingly provided with a blue light filtering unit.

4. A light-transmissive display panel according to claim 2, further comprising a pixel defining layer, the pixel defining layer comprising a plurality of pixel openings and banks surrounding the pixel openings, the sub-pixels being located in the pixel openings;

the first electrode includes a first portion provided with a light emitting layer and a second portion where an orthographic projection of the first electrode and an orthographic projection of the bank overlap in the stacking direction;

the light-transmitting display panel further comprises a light-shielding layer, the light-shielding layer is arranged between the pixel limiting layer and the color filtering unit film layer, and in the laminating direction, the orthographic projection of the light-shielding layer is completely overlapped with the orthographic projection of the second part;

preferably, the material of the light shielding layer includes a black matrix material.

5. The display panel is characterized by comprising a first display area and a second display area, wherein the light transmittance of the first display area is greater than that of the second display area;

the display panel comprises first pixel units arranged in an array manner in the first display area, wherein each first pixel unit comprises a first sub-pixel with at least one color and a first color filter unit covering the corresponding first sub-pixel;

the transmission spectrum of the first color filter unit at least partially overlaps with the emission spectrum of the corresponding first sub-pixel, and the orthographic projection of the first color filter unit at least partially overlaps with the orthographic projection of the first sub-pixel in the lamination direction of the display panel.

6. The display panel according to claim 5, wherein the first subpixel comprises a third electrode, a first light-emitting layer, and a fourth electrode which are stacked;

the first color filter unit is arranged on one side of the fourth electrode, which is far away from the first light-emitting layer;

in the laminating direction, an orthographic projection of the first color filter unit and an orthographic projection of the third electrode are completely overlapped.

7. The display panel of claim 6, wherein the display panel further comprises a pixel defining layer, the pixel defining layer comprising a plurality of pixel openings and barriers surrounding the pixel openings, the first sub-pixels being located in the pixel openings;

the third electrode comprises a third part provided with a first light-emitting layer and a fourth part, wherein the orthographic projection of the third electrode is overlapped with the orthographic projection of the retaining wall in the stacking direction;

the display panel further comprises a first light shielding layer, the first light shielding layer is arranged between the pixel limiting layer and the film layer of the first color filter unit, and in the laminating direction, the orthographic projection of the first light shielding layer is completely overlapped with the orthographic projection of the fourth portion.

8. The display panel according to claim 7, further comprising second pixel units arranged in an array in the second display region, wherein each of the second pixel units comprises a second sub-pixel of at least one color and a second color filter unit covering the corresponding second sub-pixel;

the transmission spectrum of the second color filter unit at least partially overlaps with the emission spectrum of the corresponding second sub-pixel, and the orthographic projection of the second color filter unit at least partially overlaps with the orthographic projection of the second sub-pixel in the lamination direction of the display panel;

preferably, the second sub-pixel comprises a fifth electrode, a second light-emitting layer and a sixth electrode which are stacked;

the second color filter unit is arranged on one side of the sixth electrode, which is far away from the second light-emitting layer;

in the laminating direction, the orthographic projection of the second color filter unit is completely overlapped with the orthographic projection of the fifth electrode;

preferably, the third electrode and the fifth electrode comprise reflective electrodes, and the fourth electrode and the sixth electrode comprise semi-transparent semi-reflective electrodes;

preferably, the third electrode and the fifth electrode are anodes, and the fourth electrode and the sixth electrode are cathodes;

preferably, the fourth electrode and the sixth electrode are integrally formed surface electrodes.

9. The display panel of claim 8, further comprising a second light shielding layer disposed in the second display region, wherein the second light shielding layer is disposed between the pixel defining layer and the film layer of the second color filter unit, and covers the retaining wall and avoids the pixel opening.

10. The display panel according to claim 7, further comprising a polarizing layer disposed in the second display area and avoiding the first display area.

Technical Field

The application relates to the field of display, in particular to a light-transmitting display panel and a display panel.

Background

With the rapid development of electronic devices, users have higher requirements for screen occupation ratio of the electronic devices, so that the display panels of the electronic devices receive more and more attention in the industry.

Conventional electronic devices such as mobile phones, tablet computers, etc. need to integrate components such as front-facing cameras, earphones, infrared sensing elements, etc. In the prior art, a groove (Notch) or an opening may be formed in the display screen, and external light may enter the photosensitive element located below the screen through the groove or the opening. However, these electronic devices are not all full-screen in the true sense, and cannot display in each area of the whole screen, for example, the corresponding area of the front camera cannot display the picture.

Content of application

The embodiment of the application provides a printing opacity display panel and display panel realizes that display panel's at least part region light-permeable just can show, is convenient for photosensitive assembly's integration under the screen.

A first aspect of the embodiments of the present application provides a light-transmissive display panel, which includes pixel units arranged in an array, where each pixel unit includes at least one color sub-pixel and a color filter unit covering the corresponding sub-pixel; the transmission spectrum of the color filter unit at least partially overlaps with the emission spectrum of the corresponding sub-pixel, and the orthographic projection of the color filter unit at least partially overlaps with the orthographic projection of the sub-pixel in the laminating direction of the light-transmitting display panel.

According to the foregoing embodiments of the present application, the sub-pixel includes a first electrode, a light emitting layer, and a second electrode that are stacked; the color filter unit is arranged on one side of the second electrode, which is far away from the luminescent layer; in the lamination direction, the orthographic projection of the color filter unit completely coincides with the orthographic projection of the first electrode.

According to any of the preceding embodiments of the present application, the first electrode comprises a reflective electrode and the second electrode comprises a transflective electrode.

According to any of the preceding embodiments of the examples of the present application, the first electrode is an anode and the second electrode is a cathode.

According to any of the foregoing embodiments of the present application, the pixel unit at least includes a red sub-pixel, a green sub-pixel and a blue sub-pixel; the red sub-pixel is correspondingly provided with a red light filtering unit, the green sub-pixel is correspondingly provided with a green light filtering unit, and the blue sub-pixel is correspondingly provided with a blue light filtering unit.

According to any of the foregoing embodiments of the present application, the light-transmissive display panel further includes a pixel defining layer, the pixel defining layer includes a plurality of pixel openings and a bank enclosing the pixel openings, and the sub-pixels are located in the pixel openings; the first electrode includes a first portion provided with a light emitting layer and a second portion where an orthographic projection of the first electrode and an orthographic projection of the bank overlap in the stacking direction; the light-transmitting display panel further comprises a light-shielding layer, the light-shielding layer is arranged between the pixel limiting layer and the film layer of the color filtering unit, and in the laminating direction, the orthographic projection of the light-shielding layer is completely overlapped with the orthographic projection of the second part.

According to any one of the foregoing embodiments of the present application, the material of the light shielding layer includes a black matrix material.

A second aspect of the embodiments of the present application provides a display panel, including a first display area and a second display area, where a light transmittance of the first display area is greater than a light transmittance of the second display area; the display panel comprises first pixel units arranged in an array manner in a first display area, wherein each first pixel unit comprises a first sub-pixel with at least one color and a first color filter unit covering the corresponding first sub-pixel; the transmission spectrum of the first color filter unit at least partially overlaps with the emission spectrum of the corresponding first sub-pixel, and the orthographic projection of the first color filter unit at least partially overlaps with the orthographic projection of the first sub-pixel in the lamination direction of the display panel.

According to the foregoing embodiments of the present application, the first subpixel includes a third electrode, a first light emitting layer, and a fourth electrode which are stacked; the first color filter unit is arranged on one side of the fourth electrode, which is far away from the first light-emitting layer; in the laminating direction, the orthographic projection of the first color filter unit and the orthographic projection of the third electrode are completely overlapped.

According to any of the foregoing embodiments of the present application, the display panel further includes a pixel defining layer, the pixel defining layer includes a plurality of pixel openings and a bank enclosing the pixel openings, the first sub-pixels are located in the pixel openings; the third electrode comprises a third part provided with a first light-emitting layer and a fourth part, wherein the orthographic projection of the third electrode is overlapped with the orthographic projection of the retaining wall in the stacking direction; the display panel further comprises a first light shielding layer; the first shading layer is arranged between the pixel limiting layer and the film layer of the first color filtering unit, and the orthographic projection of the first shading layer is completely overlapped with the orthographic projection of the fourth part in the laminating direction.

According to any one of the previous embodiments of the present application, the display panel includes second pixel units arranged in an array in the second display region, each of the second pixel units includes a second sub-pixel of at least one color and a second color filter unit covering the corresponding second sub-pixel; the transmission spectrum of the second color filter unit at least partially overlaps with the emission spectrum of the corresponding second sub-pixel, and the orthographic projection of the second color filter unit at least partially overlaps with the orthographic projection of the second sub-pixel in the lamination direction of the display panel.

According to any one of the foregoing embodiments of the present application, the second sub-pixel includes a fifth electrode, a second light emitting layer, and a sixth electrode that are stacked; the second color filter unit is arranged on one side of the sixth electrode, which is far away from the second light-emitting layer; in the laminating direction, the orthographic projection of the second color filter unit is completely overlapped with the orthographic projection of the fifth electrode.

According to any of the preceding embodiments of the present application, the third and fifth electrodes comprise reflective electrodes, and the fourth and sixth electrodes comprise transflective electrodes.

According to any of the preceding embodiments of the examples of the present application, the third and fifth electrodes are anodes and the fourth and sixth electrodes are cathodes.

According to any of the preceding embodiments of the present application, the fourth electrode and the sixth electrode are integrally formed face electrodes.

According to any of the foregoing embodiments of the present application, the display panel further includes a second light shielding layer disposed in the second display region, and the second light shielding layer is disposed between the pixel defining layer and the film layer of the second color filter unit, covering the retaining wall and avoiding the pixel opening.

According to any of the foregoing embodiments of the present application, the display panel further includes a polarizing layer disposed in the second display area and avoiding the first display area.

According to the light-transmitting display panel provided by the embodiment of the application, the light-transmitting display panel comprises pixel units which are arranged in an array, each pixel unit comprises at least one color sub-pixel and a color filter unit which covers the corresponding sub-pixel; the transmission spectrum of the color filter unit at least partially overlaps with the emission spectrum of the corresponding sub-pixel, and the orthographic projection of the color filter unit at least partially overlaps with the orthographic projection of the sub-pixel in the laminating direction of the light-transmitting display panel. The sub-pixels of the light-transmitting display panel are covered with the color filter units, wherein the transmission spectrums of the color filter units are at least partially overlapped with the emission spectrums of the corresponding sub-pixels, in an optional implementation mode, the colors of the transmitted light of the color filter units are the same as the light-emitting colors of the corresponding sub-pixels, the corresponding color filter units are arranged on the sub-pixels, a polarizer in the prior art can be replaced, the transmittance of the light-transmitting display panel is improved, in addition, the color filter units are used for replacing the polarizer in the prior art, the thickness of the display panel can be further reduced, the flexibility and the flexibility of the display panel are improved, the service life of the display panel is prolonged, and the product has higher market competitiveness.

Further, the light-transmitting display panel further comprises a light-shielding layer; the light shielding layer is arranged between the pixel limiting layer and the film layer of the color filtering unit, and the orthographic projection of the light shielding layer is completely overlapped with the orthographic projection of the second part of the first electrode in the laminating direction of the display panel. The shading layer covers the climbing position of the pixel limiting layer and the first electrodes of the rest non-pixel opening areas, namely the area above the second part of the first electrodes, and can prevent the first electrodes of the non-pixel opening areas from reflecting light; and prevent exceeding the colored light filtering unit of first electrode part and filtering external light for the photosensitive element that sets up in printing opacity display panel below is inaccurate like the colour coordinate of camera daylighting, influences the sensitization effect.

The second aspect of the application provides a display panel, and the luminousness of this display panel's first display area is greater than the luminousness of second display area for display panel can integrate sensitization subassembly at the back of first display area, realizes for example that the screen of the sensitization subassembly of camera integrates down, and first display area can show the picture simultaneously, improves display panel's display area, realizes display device's comprehensive screen design. The first display area of the display panel can adopt a color filtering unit to replace a polarizer in the prior art, so that the light transmittance of the first display area is improved; the second display area can adopt the design that the polarizer only covers the second display area, and can also adopt the design that the color filter unit replaces the polarizer in the prior art. The display uniformity of the display panel is improved.

Drawings

Other features, objects, and advantages of the present application will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.

FIG. 1 is a schematic cross-sectional view of a light-transmissive display panel provided in accordance with an alternative embodiment of the present application;

FIG. 2 is a schematic top view of a display panel provided in accordance with an alternative embodiment of the present application;

FIG. 3 is a schematic cross-sectional view of a first display region of a display panel provided in accordance with an alternative embodiment of the present application;

FIG. 4 is a schematic cross-sectional view of a second display area of a display panel provided in accordance with an alternative embodiment of the present application;

FIG. 5 is a schematic cross-sectional view B-B' of the display panel shown in FIG. 2 according to an alternative embodiment of the present application.

Detailed Description

Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

It will be understood that when a layer, region or layer is referred to as being "on" or "over" another layer, region or layer in describing the structure of the component, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or region.

A first aspect of the present application provides a Light-transmissive display panel, which in an alternative embodiment may be an Organic Light Emitting Diode (OLED) display panel.

Herein, the light transmittance of the light-transmissive display panel may be greater than or equal to 15%. In order to ensure that the light transmittance of the light-transmitting display panel is greater than 15%, even greater than 40%, or even higher, the light transmittance of each light-transmitting layer of the light-transmitting display panel in this embodiment is greater than 80%, and even at least a part of the light-transmitting layers has a light transmittance greater than 90%.

According to the printing opacity display panel of this application embodiment for can realize for example the screen of the photosensitive component of camera integrated under the integrated photosensitive component in printing opacity display panel's the back, printing opacity display panel can display the picture simultaneously, improves display panel's display area, realizes display device's comprehensive screen design.

The embodiment of the application provides a light-transmitting display panel, which comprises pixel units arranged in an array, wherein each pixel unit comprises at least one color sub-pixel and a color filter unit covering the corresponding sub-pixel; the transmission spectrum of the color filter unit at least partially overlaps with the emission spectrum of the corresponding sub-pixel, and the orthographic projection of the color filter unit at least partially overlaps with the orthographic projection of the sub-pixel in the laminating direction of the light-transmitting display panel. The color filter unit is used for replacing the design of a polaroid in the prior art, and the light transmittance of the light-transmitting display panel is improved.

Fig. 1 is a schematic cross-sectional view of a light-transmissive display panel provided in accordance with an alternative embodiment of the present application. Referring to fig. 1, the light-transmissive display panel includes pixel units arranged in an array, each pixel unit including at least one color sub-pixel 20 and a color filter unit 50 covering the corresponding sub-pixel 20; the transmission spectrum of the color filter unit 50 at least partially overlaps with the emission spectrum of the light emitted by the corresponding sub-pixel 20, and the orthographic projection of the color filter unit 50 at least partially overlaps with the orthographic projection of the sub-pixel 20 in the lamination direction of the light-transmissive display panel. Optionally, the color filter unit is made of a color-resistant material, the color-resistant material can only transmit light with the same color as the color-resistant material, that is, the color of the light transmitted by the color filter unit 50 is the same as the color of the light emitted by the corresponding sub-pixel 20 of the transmissive display panel, that is, the light emitted by the sub-pixel 20 can transmit the color filter unit 50, and the transmissive display panel can further realize the function of displaying pictures. In addition, the polarizer in the prior art is a whole-surface structure, which seriously affects the light transmittance of the transparent display panel, and the polarizer is made into a structure only covering the sub-pixel region, which has the problems of poor display uniformity, complex process and the like.

In an alternative embodiment, each pixel unit may include a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B, and the sub-pixels of the three colors are arranged according to a certain rule to form a pixel unit. Optionally, the color filter unit may include a red filter unit disposed corresponding to the red subpixel R, a green filter unit disposed corresponding to the green subpixel G, and a green filter unit disposed corresponding to the blue subpixel R.

In an alternative embodiment, referring to fig. 1, the sub-pixel 20 includes a first electrode 21, a light-emitting layer 22 and a second electrode 23 which are stacked; the color filter unit 50 is arranged on a side of the second electrode 23 facing away from the light-emitting layer 22; in the lamination direction, the orthographic projection of the color filter unit 50 completely coincides with the orthographic projection of the first electrode 21. The uniformity of spectrum transmission is improved, the color fidelity of transmitted light is improved, and the phenomenon of color cast of a display picture is prevented.

Although not shown in fig. 1, in some embodiments, the light emitting layer 22 may further include a carrier layer located on a side near the first electrode 21 and/or on a side near the second electrode 23. The carrier layer may be configured as a light transmissive layer. In other embodiments, light-emitting layer 22 may not be provided with a carrier layer.

Herein, the carrier layer refers to a carrier-related film layer for performing functions of injection, transport, blocking, and the like of carriers (holes or electrons). In some embodiments, the charge carrier Layer near the first electrode 21 may include at least one of a Hole Injection Layer (HIL), a Hole Transport Layer (HTL), and an Electron Blocking Layer (EBL). In some embodiments, the charge carrier Layer near the second electrode 23 may include at least one of an Electron Injection Layer (EIL), an Electron Transport Layer (ETL), and a Hole Blocking Layer (HBL).

In some embodiments, the light emitting layer 22 may not have a carrier layer, and the transmittance of the light-transmitting display panel to the blue light band is significantly improved.

In some embodiments, one of the first electrode 21 and the second electrode 23 is an anode and the other is a cathode. In this embodiment, the first electrode 21 is an anode and the second electrode 23 is a cathode.

The first electrode 21 may be configured as a light-transmitting layer, and may also be configured as a light-non-transmitting layer. When the first electrode 21 is configured as a light-transmitting layer, it may be made of Indium Tin Oxide (ITO) or Indium Zinc Oxide (IZO). When the first electrode 21 is configured as a non-light-transmitting layer, the first electrode 21 may further include, for example, a first light-transmitting conductive layer, a reflective layer on the first light-transmitting conductive layer, and a second light-transmitting conductive layer on the reflective layer. The first and second transparent conductive layers may be ITO or IZO layers, and the reflective layer may be a metal layer, such as made of silver.

The second electrode 23 may be configured as a light-transmissive layer. In some embodiments, the second electrode 23 may be a magnesium silver alloy layer. In some embodiments, the second electrode 23 is an entire face electrode layer.

The first electrode 21 is a non-light-transmissive reflective electrode, and the second electrode 23 is a semi-transmissive reflective electrode. The display brightness and the display effect of the display panel can be improved.

In some embodiments, the light-transmissive display panel further includes a pixel defining layer 30, the pixel defining layer 30 includes a plurality of pixel openings, and barriers enclosing the pixel openings, the sub-pixels 20 are located in the pixel openings; the first electrode 21 includes a first portion 211 provided with the light emitting layer 22 and a second portion 212 where an orthographic projection of the first electrode 21 and an orthographic projection of the bank overlap in the stacking direction; the light-transmitting display panel further includes a light-shielding layer 60; the light shielding layer 60 is provided between the pixel defining layer 30 and the film layers of the color filter unit 50, and an orthogonal projection of the light shielding layer 60 completely coincides with an orthogonal projection of the second portion 212 in the lamination direction. The shading layer covers the climbing position of the pixel limiting layer and the first electrodes of the rest non-pixel opening areas, namely the area above the second part of the first electrodes, and can prevent the first electrodes of the non-pixel opening areas from reflecting light; and prevent exceeding the colored light filtering unit of first electrode part and filtering external light for the photosensitive element that sets up in printing opacity display panel below is inaccurate like the colour coordinate of camera daylighting, influences the sensitization effect.

In some embodiments, the material of the light shielding layer 60 includes a black matrix material. Optionally, the light shielding layer 60 may also be made of black glue.

In some embodiments, the light transmissive display panel may further include an array substrate 10; and an encapsulation layer 70 disposed on a display surface side of the light-transmissive display panel, wherein the array substrate 10 may include a substrate and a driving device layer group.

The substrate is configured as a light-transmissive layer. In this embodiment, the light-transmitting display panel is a flexible display panel, and the substrate may be a flexible transparent substrate made of Polyimide (PI) or Polyethylene terephthalate (PET). In other embodiments, when the light-transmissive display panel is a rigid display panel, the substrate may also be a rigid transparent substrate made of glass or the like.

The driving device layer group is located on the substrate and comprises a plurality of device sub-layers, and at least part of layers in the device sub-layers are configured to be light transmission layers. Encapsulation layer 70 is configured as a light transmissive layer. The at least partial area of the light-transmitting display panel is of a laminated structure of the light-transmitting layers, the light-transmitting display panel is guaranteed to have high light transmittance, and when an image acquisition device (such as a camera) is arranged on one side of the light-transmitting display panel, the imaging definition requirement of the image acquisition device can be met.

In this embodiment, the driving device layer group includes a buffer layer, a gate insulating layer, a capacitor dielectric layer, and a planarization layer. The buffer layer is located on the substrate. The gate insulating layer is positioned on one side of the buffer layer, which faces away from the substrate. The capacitor dielectric layer is positioned on one side of the gate insulating layer, which is far away from the substrate. The interlayer dielectric layer is positioned on one side of the capacitance dielectric layer, which is far away from the substrate. The planarization layer is positioned on one side of the interlayer dielectric layer, which is far away from the substrate. In some embodiments, the buffer layer, the gate insulating layer, the capacitor dielectric layer, the interlayer dielectric layer, and the planarization layer are configured as a light transmissive layer.

In some embodiments, the drive device layer set further includes a patterned semiconductor structure and a patterned metal structure. The patterned semiconductor structure is located between the buffer layer and the gate insulating layer. The patterned metal structure is positioned between the gate insulating layer and the capacitor dielectric layer, and/or between the capacitor dielectric layer and the interlayer dielectric layer, and/or between the interlayer dielectric layer and the planarization layer. The patterned semiconductor structure and the patterned metal structure can form a pixel circuit with film layers such as a gate insulating layer, a capacitor dielectric layer and an interlayer dielectric layer, and the pixel circuit is used for driving sub-pixels to emit light.

In some embodiments, the driving device layer set further comprises a light-transmissive wire. The light-transmitting wire electrically connects the pixel circuit and the first electrode, i.e., the anode, of the subpixel. The light-transmitting wire may be made of Indium Tin Oxide (ITO) or Indium Zinc Oxide (IZO). The light transmittance of the light-transmitting display panel can be further improved by setting the wires connecting the pixel circuits and the sub-pixels as light-transmitting wires.

A second aspect of the embodiments of the present application provides a display panel, and fig. 2 is a schematic top view of the display panel provided according to an alternative embodiment of the present application; FIG. 3 is a schematic cross-sectional view of a first display region of a display panel provided in accordance with an alternative embodiment of the present application; FIG. 4 is a schematic cross-sectional view of a second display area of a display panel provided in accordance with an alternative embodiment of the present application; FIG. 5 is a schematic cross-sectional view B-B' of the display panel shown in FIG. 2 according to an alternative embodiment of the present application. Referring to fig. 2, the display panel includes a first display area AA1 and a second display area AA2, and the light transmittance of the first display area AA1 is greater than that of the second display area AA 2. In this embodiment, second display area AA2 is disposed around a portion of the periphery of first display area AA1, and in some other embodiments, second display area AA2 may be disposed around the entire periphery of first display area AA 1. In this embodiment, the first display area AA1 has a polygonal shape, and in other embodiments, the first display area AA1 may have other shapes such as a circle, a sector, and the like.

The display panel includes a plurality of film layers arranged in a stacked manner, and a portion of the plurality of film layers is configured as a light-transmissive layer. At least part of the light transmitting layer covers the first display area AA 1.

Herein, the light transmittance of the first display area AA1 is greater than or equal to 15%. In order to ensure that the light transmittance of the first display area AA1 is greater than 15%, even greater than 40%, or even higher, the light transmittance of each light-transmitting layer of the display panel 100 covering the first display area AA1 in this embodiment is greater than 80%, and even the light transmittance of at least part of the light-transmitting layers is greater than 90%.

In some embodiments, the pixel density of the first display area AA1 of the display panel is less than or equal to the pixel density of the second display area AA2, or the size of the sub-pixels of the first display area AA1 of the display panel is less than the size of the sub-pixels of the second display area AA 2. To improve the light transmittance of the first display area AA1 of the display panel.

According to the display panel of the embodiment of the application, the light transmittance of the first display area AA1 is greater than that of the second display area AA2, so that the display panel can integrate a photosensitive component on the back of the first display area AA1, for example, the photosensitive component of a camera is integrated under a screen, and meanwhile, the first display area AA1 can display a picture, so that the display area of the display panel is increased, and the comprehensive screen design of the display device is realized.

According to the display panel of the embodiment of the present application, referring to fig. 3, the display panel includes first pixel units arranged in an array in the first display area AA1, each of the first pixel units including a first sub-pixel 120 of at least one color and a first color filter unit 150 covering the corresponding first sub-pixel 120; the transmission spectrum of the first color filter unit 150 at least partially overlaps with the emission spectrum of the corresponding first sub-pixel 120, and the orthographic projection of the first color filter unit 150 at least partially overlaps with the orthographic projection of the first sub-pixel 120 in the stacking direction of the display panel. The first color filter unit is made of a color-resistant material, the color-resistant material can only transmit light with the same color, that is, the color of the light transmitted by the first color filter unit 150 is the same as the color of the light emitted by the first sub-pixel 120 corresponding to the first display area AA1 of the display panel, that is, the light emitted by the first sub-pixel 120 can transmit through the first color filter unit 150, so that the first display area AA1 of the display panel can display images. In addition, the polarizer in the prior art is a whole-surface structure, which seriously affects the light transmittance of the first display area of the display panel, and the polarizer is made to cover only the first sub-pixel area, which causes the problems of poor display uniformity, complex process, and the like.

In an alternative embodiment, each first pixel unit may include a red first sub-pixel R, a green first sub-pixel G, and a blue first sub-pixel B, and the first sub-pixels of three colors are arranged according to a certain rule to form a first pixel unit. Optionally, the first color filter unit may include a first red filter unit disposed corresponding to the first red subpixel R, a first green filter unit disposed corresponding to the first green subpixel G, and a first green filter unit disposed corresponding to the first blue subpixel R.

In some embodiments, the first subpixel 120 includes a third electrode 121, a first light emitting layer 122, and a fourth electrode 123 which are stacked; the first color filter unit 150 is disposed on a side of the fourth electrode 123 facing away from the first light emitting layer 122; in the lamination direction, the orthographic projection of the first color filter unit 150 completely coincides with the orthographic projection of the third electrode 121. The uniformity of spectrum transmission is improved, the color fidelity of transmitted light is improved, and the phenomenon of color cast of a display picture is prevented.

In some embodiments, the display panel further includes a pixel defining layer 130, the pixel defining layer 130 includes a plurality of pixel openings, and a bank enclosing the pixel openings, the first sub-pixels 120 are located in the pixel openings; the third electrode 121 includes a third portion 1211 provided with the first light-emitting layer 122 and a fourth portion 1212 in which an orthogonal projection of the third electrode 121 and an orthogonal projection of the bank overlap in the stacking direction; the display panel further includes a first light-shielding layer 160; the first light shielding layer 160 is disposed between the pixel defining layer 130 and the film layers of the first color filter unit 150, and an orthogonal projection of the first light shielding layer 160 and an orthogonal projection of the fourth portion 1212 are completely overlapped in the laminating direction. The first light shielding layer 160 covers the third electrode 121 at the climbing position of the pixel defining layer 130 and the rest of the non-pixel opening area, i.e., the upper area of the fourth portion 1212 of the third electrode 121, and can prevent the light reflection of the third electrode 121 at the non-pixel opening area; and prevent the portion of the first color filter unit 150 that exceeds the third electrode 121 from filtering the external light, so that the color coordinates of the light-sensing components, such as the camera, disposed below the first display area of the display panel are not accurate, and the light-sensing effect is not affected.

In some embodiments, the material of the first light shielding layer 160 includes a black matrix material. Optionally, the first light shielding layer 160 may also be made of black glue.

In some embodiments, referring to fig. 4, the display panel includes second pixel units disposed in an array in the second display area AA2, each of the second pixel units including a second sub-pixel 220 of at least one color and a second color filter unit 250 covering the corresponding second sub-pixel 220; the transmission spectrum of the second color filter unit 250 at least partially overlaps with the emission spectrum of the corresponding second sub-pixel 220, and the orthographic projection of the second color filter unit 250 at least partially overlaps with the orthographic projection of the second sub-pixel 220 in the stacking direction of the display panel. The structure of the first color filter unit is consistent with that of the first display area of the display panel, so that the display difference between the first display area and the second display area of the display panel can be reduced, and the process is simplified.

In some embodiments, the second sub-pixel 220 includes a fifth electrode 221, a second light emitting layer 222, and a sixth electrode 223 which are stacked; the second color filter unit 250 is disposed on a side of the sixth electrode 223 facing away from the second light emitting layer 222; in the lamination direction, the orthographic projection of the second color filter unit 250 completely coincides with the orthographic projection of the fifth electrode 221; the uniformity of spectrum transmission is improved, the color fidelity of transmitted light is improved, and the phenomenon of color cast of a display picture is prevented.

Although not shown in the figures, in some embodiments, first light emitting layer 122 and second light emitting layer 222 may also include a charge carrier layer. The carrier layer may be configured as a light transmissive layer. In other embodiments, the first light emitting layer 122 and the second light emitting layer 222 may not have a carrier layer, and the light transmittance of the light-transmitting display panel to the blue light band is significantly improved.

Herein, the carrier layer refers to a carrier-related film layer for performing functions of injection, transport, blocking, and the like of carriers (holes or electrons). In some embodiments, the charge carrier Layer may include at least one of a Hole Injection Layer (HIL), a Hole Transport Layer (HTL), an Electron Blocking Layer (EBL), an Electron Injection Layer (EIL), an Electron Transport Layer (ETL), and a Hole Blocking Layer (HBL).

In some embodiments, the third electrode 121 and the fifth electrode 221 include reflective electrodes, and the third electrode 121 and the fifth electrode 221 may further include, for example, a first light-transmitting conductive layer, a reflective layer on the first light-transmitting conductive layer, and a second light-transmitting conductive layer on the reflective layer. The first and second transparent conductive layers may be ITO or IZO layers, and the reflective layer may be a metal layer, such as made of silver. The fourth electrode 123 and the sixth electrode 223 include a semi-transparent semi-reflective electrode, which may be a magnesium silver alloy layer; alternatively, the third electrode 121 and the fifth electrode 221 are anodes, and the fourth electrode 123 and the sixth electrode 223 are cathodes.

In some embodiments, the third electrode 121 and the fifth electrode 221 may be configured as a light-transmitting layer, and may also be configured as a light-non-transmitting layer. When the first electrode 21 is configured as a light-transmitting layer, it may be made of Indium Tin Oxide (ITO) or Indium Zinc Oxide (IZO).

In some embodiments, the fourth electrode 123 and the sixth electrode 223 are integrally formed face electrodes.

In some embodiments, the display panel further includes a second light shielding layer 260 disposed in the second display area AA2, wherein the second light shielding layer 260 is disposed between the pixel defining layer 230 and the second color filter unit 250, covers the retaining wall and avoids the pixel opening. The light reflection is prevented from influencing the quality of the display picture. The fifth electrode 221 includes a fifth portion provided with the second light emitting layer 220 and a sixth portion 2212 in which an orthographic projection of the fifth electrode 121 and an orthographic projection of the bank overlap in the stacking direction of the display panel, and it can be understood that the second light shielding layer covers the bank and the avoiding pixel opening, and the second light shielding layer does not cover the fifth portion of the fifth electrode.

In some embodiments, referring to fig. 5, the second display area AA2 uses the same light shielding layer and color filter unit as the first display area AA1 instead of the polarizer, so that the display difference between the first display area and the second display area can be reduced, the display boundary between the first display area and the second display area is weakened, and the display uniformity of the display panel is improved.

In some embodiments, the display panel further includes a polarizing layer disposed in the second display area AA2 and disposed away from the first display area AA 1. The second display area of the display panel is provided with a polaroid, so that the display quality of the second display area is ensured.

In some embodiments, the display panel may further include an array substrate 110 (210); and an encapsulation layer 170(270) disposed on a display surface side of the display panel, wherein the array substrate may include a substrate and a driving device layer group.

The substrate is configured as a light-transmitting layer provided with a first display region and a second display region of the display panel. In this embodiment, the display panel is a flexible display panel, and the substrate may be a flexible transparent substrate made of Polyimide (PI) or Polyethylene terephthalate (PET). In other embodiments, when the light-transmissive display panel is a rigid display panel, the substrate may also be a rigid transparent substrate made of glass or the like.

The driving device layer group is located on the substrate and comprises a plurality of device sub-layers, and at least part of layers in the device sub-layers are configured to be light transmission layers. The at least partial light-transmitting layer, the substrate and the packaging layer in the driving device layer group cover the first display area AA1, so that at least a partial area of the display panel in the first display area AA1 is of a laminated structure of a plurality of light-transmitting layers, the first display area AA1 is guaranteed to have high light transmittance, and when an image acquisition device (such as a camera) is arranged on one side of the first display area AA1 of the display panel, the requirement on the imaging definition of the image acquisition device can be met.

In this embodiment, the driving device layer group includes a buffer layer, a gate insulating layer, a capacitor dielectric layer, and a planarization layer. The buffer layer is located on the substrate. The gate insulating layer is positioned on one side of the buffer layer, which faces away from the substrate. The capacitor dielectric layer is positioned on one side of the gate insulating layer, which is far away from the substrate. The interlayer dielectric layer is positioned on one side of the capacitance dielectric layer, which is far away from the substrate. The planarization layer is positioned on one side of the interlayer dielectric layer, which is far away from the substrate.

In some embodiments, the buffer layer, the gate insulating layer, the capacitor dielectric layer, the interlayer dielectric layer, and the planarization layer are configured as a light transmissive layer, and at least one of the buffer layer, the gate insulating layer, the capacitor dielectric layer, or the interlayer dielectric layer covers the first display area AA 1. For example, in the present embodiment, the buffer layer, the gate insulating layer, the capacitor dielectric layer and the interlayer dielectric layer extend to both the first display area AA1 and the second display area AA 2.

In some embodiments, the display panel further comprises a first pixel circuit for driving the first sub-pixel to emit light and a second pixel circuit for driving the second sub-pixel to emit light. The first pixel circuit and the second pixel circuit are located in the driving device layer group. The first pixel circuit and the second pixel circuit may be disposed in the second display area AA 2. At least part of the first pixel circuit and the second pixel circuit have low or opaque light transmittance, and the first pixel circuit and the second pixel circuit are both arranged in the second display area AA2, so that the wiring structure in the first display area AA1 is reduced, and the light transmittance of the first display area AA1 is improved.

In some embodiments, the drive device layer set further includes a patterned semiconductor structure and a patterned metal structure. The patterned semiconductor structure is located between the buffer layer and the gate insulating layer. The patterned metal structure is positioned between the gate insulating layer and the capacitor dielectric layer, and/or between the capacitor dielectric layer and the interlayer dielectric layer, and/or between the interlayer dielectric layer and the planarization layer. The patterned semiconductor structure and the patterned metal structure can form a first pixel circuit and a second pixel circuit together with film layers such as a gate insulating layer, a capacitor dielectric layer and an interlayer dielectric layer. The semiconductor structure and the metal structure are disposed in the second display area AA2 and disposed away from the first display area AA1, so that the first pixel circuit and the second pixel circuit are disposed in the second display area AA2 and disposed away from the first display area AA 1.

In some embodiments, the driving device layer set further comprises a light-transmissive wire. The light-transmitting wire electrically connects the first pixel circuit and the first sub-pixel. Wherein at least a portion of the light-transmitting wires is located in the first display area AA 1. The light-transmitting wire may be made of Indium Tin Oxide (ITO) or Indium Zinc Oxide (IZO). By setting the wire connecting the first pixel circuit and the first sub-pixel as a light-transmitting wire, the light transmittance of the first display area AA1 can be further improved.

In accordance with the embodiments of the present application as described above, these embodiments are not exhaustive and do not limit the application to the specific embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the application and its practical application, to thereby enable others skilled in the art to best utilize the application and its various modifications as are suited to the particular use contemplated. The application is limited only by the claims and their full scope and equivalents.