阅读说明：本技术 显示装置 (Display device ) 是由 吴梦莹 于 2019-08-26 设计创作，主要内容包括：本揭示提供一种显示装置,显示装置包括第一衬底层、第二衬底层、薄膜晶体管层、有机电致发光层,以及显示区域与透光子区。第二衬底层和薄膜晶体管层在透光子区对应处设置有通孔,通孔内填充有导光介质,同时在第一衬底层面向第二衬底层的一侧,在透光子区对应位置设置有导光透镜结构。光线通过导光介质和导光透镜结构后,光线透过率高,并且仍保持各区域的亮度一致,提高了显示装置的成像质量及摄像功能。(The disclosure provides a display device comprising a first substrate layer, a second substrate layer, a thin film transistor layer, an organic electroluminescent layer, a display area and a light-transmitting sub-area. The second substrate layer and the thin film transistor layer are provided with through holes at corresponding positions of the light-transmitting sub-regions, light guide media are filled in the through holes, and light guide lens structures are arranged at corresponding positions of the light-transmitting sub-regions on one side, facing the second substrate layer, of the first substrate layer. After light passes through the light guide medium and the light guide lens structure, the light transmittance is high, the brightness of each area is kept consistent, and the imaging quality and the camera shooting function of the display device are improved.)

1. A display device, comprising: the display area comprises a light-transmitting sub-area for lighting of the camera under the screen;

the display device includes:

a first substrate layer;

a second substrate layer disposed on the first substrate layer;

a thin-film transistor layer disposed on the second substrate layer;

an organic electroluminescent layer disposed on the thin-film transistor layer;

through holes are formed in the positions, corresponding to the light transmitting sub-regions, of the second substrate layer and the thin film transistor layer, and light guide media are filled in the through holes;

and the first substrate layer faces one side of the second substrate layer, and a light guide lens structure is arranged at a corresponding position of the light transmitting subarea.

2. The display device of claim 1, wherein the light-guiding lens structure comprises a fresnel lens.

3. A display device as claimed in claim 2, wherein one side of the light-guiding lens structure is provided with a plurality of equidistant insections forming a plurality of concentric circles on the surface of the light-guiding lens structure.

4. The display device of claim 1, wherein the first substrate layer comprises:

the thickness of the first flexible layer at the light-transmitting sub-area is smaller than that of the first flexible layer at other positions of the display area;

the first blocking layer is arranged on the first flexible layer, the first blocking layer is far away from one side of the first flexible layer, and a light guide lens structure is arranged at the corresponding position of the light transmission sub-area.

5. The display device according to claim 4, wherein a groove is provided at a corresponding position of the light-transmitting sub-region on a side of the first flexible layer away from the first barrier layer.

6. The display device of claim 1, wherein the second substrate layer comprises:

a second flexible layer disposed on the first barrier layer;

a second barrier layer disposed on the second flexible layer;

wherein, the second flexible layer with the second barrier layer is provided with the through-hole in the light-transmitting subregion corresponding department.

7. The display device of claim 1, wherein the via comprises a step hole, and an aperture of the step hole in a region corresponding to the thin-film transistor layer is smaller than an aperture of the step hole in a region corresponding to the second substrate layer.

8. The display device according to claim 1, wherein a periphery of the light guide medium comprises a reflective layer, and the reflective layer wraps the light guide medium and is attached to an inner wall of the through hole.

9. The display device according to claim 1, wherein the organic electroluminescent layer comprises pixel cells, and a density of the pixel cells in the display region is greater than a density of the pixel cells in the light-transmitting sub-region.

10. The display device according to claim 1, wherein a material of the light guide medium comprises polyimide.

Technical Field

The present disclosure relates to the field of display technologies, and in particular, to a display device.

Background

With the rapid development of modern display technologies, the display technology is developing in a direction of being lighter, thinner, softer, more transparent and larger in screen ratio, and the functions of the display device are increasing continuously.

In order to further increase the screen occupation ratio of the display screen in the display panel, researchers have proposed a technical scheme of under-screen image capture. From the outward appearance, the original hole of making a video recording has been saved on the surface of the display screen of making a video recording technology preparation under the screen, and whole display panel's screen accounts for than and the integration is higher, and in order to guarantee display screen's display effect, the technique of making a video recording requires very high to the transmissivity in the district of making a video recording under the screen. However, the display panel of the existing under-screen image pickup technology is generally made of a polyimide flexible substrate, and the designed display panel has a simple structure, and meanwhile, the average optical transmittance of the substrate made of the material in a visible light waveband is low, only about 70%, and along with the superposition of each film layer, the overall transmittance of the display panel is further reduced, so that when an image pickup area of the display panel carries out image pickup, due to the low transmittance, light cannot enter the image pickup area completely, the image quality of a picture is poor, and the display effect is further influenced.

In summary, in the existing under-screen image capturing technology, there are problems that the structural design of the inner panel of the display device is simple, the optical transmittance is low, and meanwhile, during image capturing, light cannot completely enter the panel, which causes low light transmittance, poor image quality of the image, poor image capturing effect, and unsatisfactory display effect.

Disclosure of Invention

The present disclosure provides a display device to solve the problems of single structural design of a panel, low optical transmittance of the display panel, unsatisfactory imaging function, poor display effect, and the like in the conventional display device.

To solve the above technical problem, the technical solution provided by the embodiment of the present disclosure is as follows:

according to a first aspect of embodiments of the present disclosure, there is provided a display device including:

the display area comprises a light-transmitting sub-area for lighting of the camera under the screen;

the display device includes:

a first substrate layer;

a second substrate layer disposed on the first substrate layer;

a thin-film transistor layer disposed on the second substrate layer;

an organic electroluminescent layer disposed on the thin-film transistor layer;

through holes are formed in the positions, corresponding to the light transmitting sub-regions, of the second substrate layer and the thin film transistor layer, and light guide media are filled in the through holes;

and the first substrate layer faces one side of the second substrate layer, and a light guide lens structure is arranged at a corresponding position of the light transmitting subarea.

According to an embodiment of the present disclosure, the light guide lens structure includes a fresnel lens.

According to an embodiment of the present disclosure, a plurality of equidistant insections are disposed on one side of the light guide lens structure, and the insections form a plurality of concentric circles on the surface of the light guide lens structure.

According to an embodiment of the present disclosure, the first substrate layer comprises:

the thickness of the first flexible layer at the light-transmitting sub-area is smaller than that of the first flexible layer at other positions of the display area;

the first blocking layer is arranged on the first flexible layer, the first blocking layer is far away from one side of the first flexible layer, and a light guide lens structure is arranged at the corresponding position of the light transmission sub-area.

According to an embodiment of the present disclosure, a groove is disposed at a corresponding position of the light-transmitting sub-region on a side of the first flexible layer away from the first blocking layer.

According to an embodiment of the present disclosure, the second substrate layer comprises:

a second flexible layer disposed on the first barrier layer;

a second barrier layer disposed on the second flexible layer;

wherein, the second flexible layer with the second barrier layer is provided with the through-hole in the light-transmitting subregion corresponding department.

According to an embodiment of the present disclosure, the through hole includes a step hole, and an aperture of the step hole in a region corresponding to the thin film transistor layer is smaller than an aperture of the step hole in a region corresponding to the second substrate layer.

According to an embodiment of the present disclosure, the periphery of the light guide medium includes a reflective layer, and the reflective layer wraps the light guide medium and is attached to the inner wall of the through hole.

According to an embodiment of the present disclosure, the organic electroluminescent layer includes pixel units, and a density of the pixel units in the display area is greater than a density of the pixel units in the light-transmitting sub-area.

According to an embodiment of the present disclosure, the material of the light guide medium includes polyimide.

In summary, the beneficial effects of the embodiment of the present disclosure are:

this disclosure provides a new display device, through set up first barrier layer on the substrate base plate, still be provided with lens structure on the first barrier layer that corresponds in the printing opacity subregion, lens structure includes fresnel lens, and after light passed through fresnel lens, light can focus on camera device and can not have the light shadow, can not form the influence to the printing opacity condition. Meanwhile, a through hole is formed in order to improve the light transmittance, and a light guide medium is filled in the through hole, so that the light transmittance of light is further improved. And the imaging and display effects are improved.

Drawings

In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some of the disclosed embodiments, and that other drawings can be obtained by those skilled in the art without inventive effort.

FIG. 1 is a schematic diagram of the structure of each layer of a display device according to an embodiment of the disclosure;

FIG. 2 is a schematic diagram of a light guide lens structure according to an embodiment of the disclosure;

FIG. 3 is a schematic view of light transmission according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of the structure of layers of a display device according to another embodiment of the present disclosure;

FIG. 5 is a schematic diagram illustrating the structure of layers of a display device according to yet another embodiment of the present disclosure;

FIG. 6 is a flow chart of a display device fabrication process according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. It is to be understood that the described embodiments are merely illustrative of some, but not all embodiments of the disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any inventive step, are intended to be within the scope of the present disclosure.

In an embodiment of the disclosure, as shown in fig. 1, fig. 1 is a schematic diagram illustrating a structure of each layer of a display device according to an embodiment of the disclosure. The display device comprises a first substrate layer 10, a second substrate layer 11, a thin-film transistor layer 104 and an organic electroluminescent layer 105. Wherein second substrate layer 11 is disposed on first substrate layer 10, thin-film-transistor layer 104 is disposed on second substrate layer 11, and organic electroluminescent layer 105 is disposed on thin-film-transistor layer 104.

Specifically, the first substrate layer 10 includes a first flexible layer 100 and a first barrier layer 101, and the second substrate layer 11 includes a second flexible layer 102 and a second barrier layer 103.

Wherein, above-mentioned each rete sets up in proper order: the first barrier layer 101 is disposed on the first flexible layer 100, the second flexible layer 102 is disposed on the first barrier layer 101, the second barrier layer 103 is disposed on the second flexible layer 102, and the thin-film-transistor layer 104 is disposed on the second barrier layer 103.

The display device further includes a protective layer 106, the protective layer 106 being disposed on the organic electroluminescent layer 105. The protective layer 106 encapsulates the film layers of the display device to prevent external water vapor from entering the display device, which affects the service life of the device.

As shown in fig. 1, in the entire display device, the display area a further includes a light-transmitting sub-area B, the display area a is disposed around the light-transmitting sub-area B, a camera device, such as a camera, is mounted below the display device corresponding to the light-transmitting sub-area B, and external light passes through the light-transmitting sub-area B and is transmitted to the camera device, thereby achieving a photographing function.

In the embodiment of the present disclosure, in order to improve the light transmittance of the display device, the display device is further provided with a through hole 112, and the through hole 112 is formed on the second flexible layer 102, the second barrier layer 103 and the thin-film transistor layer 104 corresponding to the light-transmitting sub-region B.

Specifically, the through hole 112 is filled with the light guide medium 110, the light guide medium 110 is mainly a light-transmitting medium, and includes a polyimide material, and meanwhile, in order to improve the light transmittance, the light entering the through hole 112 from the upper end of the through hole 112 can completely pass through the lower end of the through hole 112, the through hole 112 can be further configured as a tapered hole, the top aperture of the tapered hole can be larger than the aperture of the bottom, or the top aperture of the tapered hole is smaller than the aperture of the bottom, and the light guide medium is selected according to a specific product. Therefore, more materials can be saved, and the cost is reduced.

In order to reduce the loss of light in the light guide medium 110 and reflect the light to other film layers, the reflective layer 109 is disposed on the outer periphery of the light guide medium 110, the reflective layer 109 wraps the light guide medium 110, and the reflective layer 109 is attached to the inner wall of the through hole 112. The inner surface of the reflective layer 109 is smooth, so that light can be effectively prevented from being reflected into each film layer of the display device from the through hole 112, and the reflective layer 109 can also prevent other impurities from entering the through hole 112, so that the whole device is protected to a certain extent.

In order to increase the external light incident in the through hole 112, in the embodiment of the disclosure, a light guiding lens structure 110 is further disposed on the first blocking layer 101, and the light guiding lens structure 110 is disposed at a position of the first blocking layer 101 corresponding to the light-transmitting sub-region B. The light guide lens structure 110 in the embodiment of the present disclosure is not a common optical lens, and a plurality of equidistant insections are disposed in the light guide lens structure 110.

Specifically, as shown in fig. 2, fig. 2 is a schematic view of a lens structure according to an embodiment of the disclosure. The lens 200 includes a plurality of equidistantly spaced insections 201. The lens 200 may be a fresnel lens. The insection 201 arranged at equal intervals forms a plurality of concentric rings on the surface of the lens 200, the thickness difference of the common lens is large, and after light passes through the insection, the phenomena of darkening of corners and blurring of local areas can occur. The lens 200 of the embodiment of the present disclosure is a fresnel lens, and after light passes through the light guide medium 110 in the through hole 112, refraction occurs at the interface between the edge area of the lens 200 and the light guide medium 110, because the lens 200 has a plurality of equidistant insections 201, light propagating in a straight line in the lens 200 is filtered, only light at a curved surface where refraction occurs is retained, and after the light passes through the lens 200, brightness of each part of an image on the camera device is consistent, thereby achieving a high-quality imaging effect. A lens having the same or similar imaging function as that of the fresnel lens may be the lens 200 of the embodiment of the present disclosure.

Preferably, in order to further improve the transmittance of light, a thinning process is performed on the first flexible layer 100 corresponding to the light-transmitting sub-region B and at a position on a side away from the first barrier layer 101, that is, a groove is disposed on the region, so that the thickness of the first flexible layer 100 in the display region a is greater than that of the first flexible layer 100 in the light-transmitting sub-region B, and the loss of light in the first flexible layer 100 is further reduced.

Further, a pixel unit 107 is provided on the organic electroluminescent layer 105. The pixel unit 107 includes a red pixel unit, a blue pixel unit, or a green pixel unit. In the region corresponding to the light-transmitting sub-region B, the pixel density of the pixel unit 107 is less than that of the pixel unit 107 in the region corresponding to the display region a, so that after the light passes through the pixel unit 107 in the light-transmitting sub-region B, the loss of the light is reduced, and the light transmittance is improved.

Fig. 3 is a schematic view of light transmission in the embodiment of the present disclosure, as shown in fig. 3. The display device includes a first flexible layer 300, a first barrier layer 301, a second flexible layer 302, a second barrier layer 303, and a thin-film transistor layer 304, which are sequentially disposed. The light guide lens structure 306 is a fresnel lens, light rays 308 at the edge of the light guide lens structure 306 are refracted, and after the refraction is completed, light rays at each position can be gathered on the camera 305 according to the fresnel principle, and the brightness of the refracted light rays 308 is consistent. Therefore, the light-gathering effect is good, and the imaging quality is excellent.

Fig. 4 is a schematic view showing the structure of each layer of a display device according to another embodiment of the disclosure. Compared to the membrane layer structure in fig. 1, the difference is mainly the structure in the region of the through-hole. The display device comprises a first flexible layer 400, a first barrier layer 401, a second flexible layer 402, a second barrier layer 403 and a thin film transistor layer 404 which are sequentially arranged from bottom to top. The display device further comprises a through hole 406, a light guide medium 407 is filled in the through hole 406, and the light guide medium 407 is mainly a light-transmitting light guide medium and comprises a polyimide material so as to improve the light transmittance.

In the embodiment of the disclosure, the through hole 406 is a stepped hole structure, in order to reduce the opening area on the display screen, the diameter of the stepped hole on the thin film transistor layer 404 is smaller than the diameters of the other film layers, and meanwhile, on the second flexible layer 402, the through hole 406 is configured as a tapered hole, which not only enlarges the propagation path of light, but also facilitates production and manufacturing, saves materials, and effectively reduces the production cost.

Fig. 5 is a schematic view showing the structure of each film layer of a display device according to still another embodiment of the disclosure. The display device comprises a first flexible layer 500, a first barrier layer 501, a second flexible layer 502, a second barrier layer 503 and a thin film transistor layer 504 which are sequentially arranged from bottom to top. Compared with the film layer structure shown in fig. 1, in the embodiment of the disclosure, the through hole 507 is a tapered hole, and the light guiding medium 508 is filled in the through hole 507. At this time, the aperture of the upper end of the through hole 507 is larger than the aperture of the lower end of the through hole 507, so that more light can enter the display panel from the upper end of the through hole 507 and further reach the camera module inside. An emitting layer may be further disposed at the edge of the through hole 507 to prevent light in the edge region of the through hole 507 from leaking out and affecting light transmittance.

Fig. 6 is a schematic view illustrating a process flow of the display device according to the embodiment of the present disclosure, and fig. 6 is a schematic view illustrating a process flow of the display device according to the embodiment of the present disclosure. Specifically, the method comprises the following steps:

s100: providing a first substrate layer and providing a first barrier layer on the first substrate layer

Firstly, a first substrate layer is arranged, and after treatment, a first barrier layer is deposited on the first substrate layer.

S101: providing a lens structure on the first barrier layer in the light transmissive region

In order to improve the light transmittance, in the embodiment of the disclosure, the light-transmitting region of the first barrier layer is patterned, and a concentric fresnel lens structure is formed on the surface of the first barrier layer by etching.

S102: set gradually second flexible layer, second barrier layer and thin film transistor layer on the first barrier layer, and correspond in light-permeable region the second flexible layer the second barrier layer and set up the through-hole on the thin film transistor layer, be in simultaneously pack the printing opacity medium in the through-hole

After the first blocking layer of the optical component is arranged, the rest of the film layers of the display device are sequentially arranged, meanwhile, a through hole is formed in the film layer corresponding to the light-transmitting area, so that the light transmittance is further improved, and the through hole can be formed through photoetching processes such as etching, exposure and the like. After the through hole is formed, the through hole is filled with a medium, and the filled medium can effectively reduce the absorption of light.

S103: arranging an organic electroluminescent layer on the thin film transistor layer, thinning the first substrate layer in the light transmission area, and finally packaging after the arrangement is finished

After the step S102 is completed, the organic electroluminescent layer and the encapsulation layer are continuously disposed on the display device, the encapsulation layer may be deposited through a deposition process to protect the entire display device, and meanwhile, in order to improve the light transmittance of the light in the light-transmitting area, the first substrate layer in the light-transmitting area is thinned, so as to improve the service life of the display device.

Finally, the display device in the embodiment of the present disclosure is obtained.

The display device and the method for manufacturing the display device provided by the embodiment of the disclosure are described in detail above, and the description of the embodiment is only used to help understanding the technical solution and the core idea of the disclosure; those of ordinary skill in the art will understand that: it is to be understood that modifications may be made to the arrangements described in the embodiments above, and such modifications or alterations may be made without departing from the spirit of the respective arrangements of the embodiments of the present disclosure.