OLED display panel and display device
阅读说明：本技术 Oled显示面板及显示装置 (OLED display panel and display device ) 是由 叶剑 于 2020-07-08 设计创作，主要内容包括：本申请提供了一种OLED显示面板及显示装置,OLED显示面板包括：衬底；驱动电路层；平坦化层；发光功能层,包括像素电极层、像素定义层、发光材料层、公共电极层,像素定义层图案化形成像素定义区和凹槽,凹槽设置于至少两个相邻的像素定义区之间,发光材料层形成于像素定义区内,公共电极层平铺于像素定义层和发光材料层上；封装层,凹槽区内封装层的厚度,大于凹槽区外和像素定义区外封装层的厚度；触控层,包括触控电极,触控电极为围绕像素定义区的网格结构,触控电极在衬底上的投影与凹槽在衬底上的投影存在至少部分重合。增大了公共电极与触控电极间的距离,减小了公共电极与触控电极间的寄生电容,提高了OLED显示面板的触控报点率和触控灵敏度。(The application provides an OLED display panel and display device, OLED display panel includes: a substrate; a driving circuit layer; a planarization layer; the light-emitting functional layer comprises a pixel electrode layer, a pixel definition layer, a light-emitting material layer and a common electrode layer, wherein the pixel definition layer is patterned to form a pixel definition region and a groove, the groove is arranged between at least two adjacent pixel definition regions, the light-emitting material layer is formed in the pixel definition region, and the common electrode layer is laid on the pixel definition layer and the light-emitting material layer; the thickness of the packaging layer in the groove area is larger than that of the packaging layer outside the groove area and the pixel definition area; and the touch layer comprises touch electrodes, the touch electrodes are of a grid structure surrounding the pixel definition area, and the projection of the touch electrodes on the substrate is at least partially overlapped with the projection of the grooves on the substrate. The distance between the common electrode and the touch electrode is increased, the parasitic capacitance between the common electrode and the touch electrode is reduced, and the touch reporting rate and the touch sensitivity of the OLED display panel are improved.)
1. An OLED display panel, comprising:
a substrate;
a driving circuit layer formed on the substrate;
a planarization layer formed on the driving circuit layer;
the light-emitting functional layer is formed on the planarization layer and comprises a pixel electrode layer, a pixel definition layer, a light-emitting material layer and a common electrode layer which are sequentially arranged in the direction away from the substrate, the pixel electrode layer is patterned to form a pixel electrode, the pixel definition layer is patterned to form a pixel definition region and a groove, the groove is arranged between at least two adjacent pixel definition regions, the pixel definition region corresponds to the pixel electrode, the light-emitting material layer is formed in the pixel definition region, and the common electrode layer is paved on the pixel definition layer and the light-emitting material layer;
the packaging layer is formed on the common electrode layer, and the thickness of the packaging layer in the groove area is larger than the thickness of the packaging layer outside the groove area and the pixel definition area;
and the touch layer is formed on the packaging layer and comprises a touch electrode, the touch electrode is a grid structure surrounding the pixel definition area, and the projection of the touch electrode on the substrate is at least partially overlapped with the projection of the groove on the substrate.
2. The OLED display panel of claim 1, wherein a projection of the touch electrode on the substrate falls within a projection of the recess on the substrate.
3. The OLED display panel of claim 1, wherein a bottom of the recess is within the pixel defining layer.
4. The OLED display panel of claim 1, wherein the recess extends through the pixel defining layer and a bottom of the recess is at an interface of the pixel defining layer and the planarizing layer.
5. The OLED display panel of claim 1, wherein the recess extends through the pixel defining layer and a bottom of the recess is within the planarization layer.
6. The OLED display panel of claim 1, wherein the groove extends through both the pixel defining layer and the planarization layer, and a bottom of the groove is located at an interface of the planarization layer and the driving circuit layer.
7. The OLED display panel of claim 1, wherein the recess includes a first recess portion and a second recess portion, the second recess portion being disposed on a side of the first recess portion away from the encapsulation layer, a projection of the second recess portion onto the substrate falling within a projection of the first recess portion onto the substrate and being smaller in area than a projection of the first recess portion onto the substrate.
8. The OLED display panel of claim 7, wherein a projection of the touch electrode on the substrate falls within a projection of the second recessed portion on the substrate.
9. The OLED display panel of claim 8, wherein the first and second groove portions are each located within the pixel definition layer, and a bottom of the second groove portion is located within the pixel definition layer.
10. The OLED display panel of claim 8, wherein the first recess portion and the second recess portion are both located within the pixel defining layer, and a bottom of the second recess portion is located at an interface of the pixel defining layer and the planarizing layer.
11. The OLED display panel of claim 8, wherein the first groove portion extends through the pixel defining layer, the second groove portion is within the planarization layer, and a bottom of the second groove portion is within the planarization layer.
12. The OLED display panel of claim 11, wherein the planarization layer includes a first planarization layer and a second planarization layer, the second planarization layer is disposed on a side of the first planarization layer away from the encapsulation layer, the first groove portion extends through the pixel defining layer, the second groove portion extends through the first planarization layer, and a bottom of the second groove portion is located at an interface of the first planarization layer and the second planarization layer.
13. The OLED display panel of claim 8, wherein the first groove portion extends through the pixel defining layer, the second groove portion extends through the planarization layer, and a bottom of the second groove portion is located at an interface of the planarization layer and the driving circuit layer.
14. A display device comprising the OLED display panel according to any one of claims 1 to 13.
Technical Field
The application relates to the field of display, in particular to an OLED display panel and a display device.
Background
Due to the high durability, long service life and the function of supporting multi-point touch control, the capacitive touch screen is widely applied to various electronic interaction scene devices. The capacitive touch screen works on the principle that the specific position touched by a finger is detected by detecting the change of capacitance at the position touched by the finger.
At present, for a flexible AMOLED (Active-matrix organic light-emitting diode or Active-matrix organic light-emitting diode) On-cell (a touch layer is integrated On an AMOLED cover plate) display screen, a touch electrode of the display screen is usually directly manufactured On an upper surface of a thin film packaging layer, however, since the thin film packaging layer is thin (usually, the thickness is less than 10um), the distance between the touch electrode and a cathode is small, and a parasitic capacitance between the touch electrode and the cathode is large, an RC delay of a touch electrode channel at a far end of a large-sized touch screen is large, so that a scanning frequency of the touch electrode is greatly reduced, and key performances such as a touch reporting rate are reduced.
Therefore, the problem of low touch point reporting rate of the conventional AMOLED On-cell display screen needs to be solved.
Disclosure of Invention
The application provides an OLED display panel and a display device, which aim to solve the problem that the touch reporting rate of an existing AMOLED On-cell display screen is low.
In order to solve the above problems, the technical solution provided by the present application is as follows:
the present application provides an OLED display panel, which includes:
a substrate;
a driving circuit layer formed on the substrate;
a planarization layer formed on the driving circuit layer;
the light-emitting functional layer is formed on the planarization layer and comprises a pixel electrode layer, a pixel definition layer, a light-emitting material layer and a common electrode layer which are sequentially arranged in the direction away from the substrate, the pixel electrode layer is patterned to form a pixel electrode, the pixel definition layer is patterned to form a pixel definition region and a groove, the groove is arranged between at least two adjacent pixel definition regions, the pixel definition region corresponds to the pixel electrode, the light-emitting material layer is formed in the pixel definition region, and the common electrode layer is paved on the pixel definition layer and the light-emitting material layer;
the packaging layer is formed on the common electrode layer, and the thickness of the packaging layer in the groove area is larger than the thickness of the packaging layer outside the groove area and the pixel definition area;
and the touch layer is formed on the packaging layer and comprises a touch electrode, the touch electrode is a grid structure surrounding the pixel definition area, and the projection of the touch electrode on the substrate is at least partially overlapped with the projection of the groove on the substrate.
In the OLED display panel provided by the application, the projection of the touch electrode on the substrate falls into the projection of the groove on the substrate.
In the OLED display panel provided in the present application, the bottom of the groove is located within the pixel defining layer.
In the OLED display panel provided by the present application, the groove penetrates through the pixel defining layer, and a bottom of the groove is located at an interface between the pixel defining layer and the planarization layer.
In the OLED display panel provided in the present application, the groove penetrates through the pixel defining layer, and a bottom of the groove is located in the planarization layer.
In the OLED display panel provided by the present application, the groove penetrates through both the pixel defining layer and the planarization layer, and the bottom of the groove is located at an interface between the planarization layer and the driving circuit layer.
In the OLED display panel provided by the present application, the groove includes a first groove portion and a second groove portion, the second groove portion is disposed on a side of the first groove portion away from the encapsulation layer, and a projection of the second groove portion on the substrate falls into a projection of the first groove portion on the substrate and is smaller than a projection area of the first groove portion on the substrate.
In the OLED display panel provided by the present application, a projection of the touch electrode on the substrate falls into a projection of the second groove portion on the substrate.
In the OLED display panel provided by the present application, the first groove portion and the second groove portion are both located within the pixel definition layer, and a bottom of the second groove portion is located within the pixel definition layer.
In the OLED display panel provided by the present application, the first groove portion and the second groove portion are both located within the pixel defining layer, and a bottom of the second groove portion is located at an interface of the pixel defining layer and the planarization layer.
In the OLED display panel provided by the present application, the first groove portion penetrates through the pixel defining layer, the second groove portion is located in the planarization layer, and a bottom of the second groove portion is located in the planarization layer.
In the OLED display panel provided by the present application, the planarization layer includes a first planarization layer and a second planarization layer, the second planarization layer is disposed on a side of the first planarization layer away from the encapsulation layer, the first groove portion penetrates through the pixel defining layer, the second groove portion penetrates through the first planarization layer, and a bottom of the second groove portion is located on an interface of the first planarization layer and the second planarization layer.
In the OLED display panel provided by the present application, the first groove portion penetrates through the pixel defining layer, the second groove portion penetrates through the planarization layer, and a bottom portion of the second groove portion is located at an interface of the planarization layer and the driving circuit layer.
Meanwhile, the application also provides a display device which comprises any OLED display panel provided by the application.
The application provides an OLED display panel and display device, OLED display panel includes: a substrate; a driving circuit layer formed on the substrate; a planarization layer formed on the driving circuit layer; the light-emitting functional layer is formed on the planarization layer and comprises a pixel electrode layer, a pixel definition layer, a light-emitting material layer and a common electrode layer which are sequentially arranged in the direction away from the substrate, the pixel electrode layer is patterned to form a pixel electrode, the pixel definition layer is patterned to form a pixel definition region and a groove, the groove is arranged between at least two adjacent pixel definition regions, the pixel definition region corresponds to the pixel electrode, the light-emitting material layer is formed in the pixel definition region, and the common electrode layer is paved on the pixel definition layer and the light-emitting material layer; the packaging layer is formed on the common electrode layer, and the thickness of the packaging layer in the groove area is larger than the thickness of the packaging layer outside the groove area and the pixel definition area; and the touch layer is formed on the packaging layer and comprises a touch electrode, the touch electrode is a grid structure surrounding the pixel definition area, and the projection of the touch electrode on the substrate is at least partially overlapped with the projection of the groove on the substrate. Due to the arrangement of the grooves in the pixel definition layer, the distance between the common electrode and the touch electrode is increased, the parasitic capacitance between the common electrode and the touch electrode is reduced, and the touch reporting rate and the touch sensitivity of the OLED display panel are improved.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic view of a first structure of an OLED display panel according to an embodiment of the present disclosure.
Fig. 2 is a schematic structural diagram of a second OLED display panel according to an embodiment of the present disclosure.
Fig. 3 is a schematic structural diagram of a touch layer according to an embodiment of the present disclosure.
Fig. 4 is a schematic plan view of a touch electrode according to an embodiment of the present disclosure.
Detailed Description
While the embodiments and/or examples of the present application will be described in detail and fully with reference to the detailed description of the embodiments and/or examples, it is to be understood that the embodiments and/or examples described below are only a few, but not all embodiments and/or examples of the present application. All other embodiments and/or examples that can be obtained by a person skilled in the art without making any inventive step based on the embodiments and/or examples in the present application belong to the protection scope of the present application.
Directional phrases used in this application, such as [ upper ], [ lower ], [ left ], [ right ], [ front ], [ back ], [ inner ], [ outer ], [ side ], etc., refer only to the directions of the attached drawings. Accordingly, the directional terminology is used for purposes of illustration and understanding, and is in no way limiting. The terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.
The OLED display panel can solve the problem that an existing AMOLED On-cell display screen is low in touch point reporting rate.
In an embodiment, please refer to fig. 1 and fig. 2, and fig. 1 and fig. 2 respectively show two structural schematic diagrams of an OLED display panel provided in an embodiment of the present application. As shown in the drawings, the OLED display panel provided in the embodiment of the present application includes:
a substrate 110;
a driving circuit layer 120 formed on the substrate 110;
a planarization layer 130 formed on the driving circuit layer 120;
a light emitting function layer 140 formed on the planarization layer 130, including a pixel electrode layer 141, a pixel defining layer 142, a light emitting material layer 143, and a common electrode layer 144 sequentially arranged in a direction away from the substrate 110, wherein the pixel electrode layer 141 is patterned to form a pixel electrode 141, the pixel defining layer 142 is patterned to form a pixel defining region 1421 and a groove 1422, the groove 1422 is arranged between at least two adjacent pixel defining regions 1421, the pixel defining region 1421 corresponds to the pixel electrode 141, the light emitting material layer 143 is formed in the pixel defining region 1421, and the common electrode layer 144 is flatly laid on the pixel defining layer 142 and the light emitting material layer 143;
an encapsulation layer 150 formed on the common electrode layer 144, wherein the thickness of the encapsulation layer 150 in the recessed region 1422 is greater than the thickness of the encapsulation layer 150 outside the recessed region 1422 and outside the pixel defining region 1421;
the touch layer 160 is formed on the encapsulation layer 150, and includes a
The embodiment provides an OLED display panel, which forms a pixel definition area and a groove through patterning the pixel definition layer, wherein the groove is arranged between at least two adjacent pixel definition areas, the projection of the groove on a substrate is at least partially overlapped with the projection of a touch electrode on the substrate, the thickness of an encapsulation layer in the groove area is larger than the thickness of the encapsulation layer outside the groove area and the pixel definition area, the distance between a common electrode and the touch electrode is increased, the parasitic capacitance between the common electrode and the touch electrode is reduced, and the touch report rate and the touch sensitivity of the OLED display panel are improved.
Referring to fig. 1 and fig. 2, a specific structure of an OLED display panel provided in an embodiment of the present application is shown, wherein,
the substrate 110 generally includes a rigid substrate, which is generally a glass substrate, and a flexible substrate; the flexible substrate generally includes a first organic substrate, an inorganic substrate, and a second inorganic substrate, the first organic substrate and the second organic substrate are used for realizing the flexible performance of the OLED display panel, and the inorganic substrate is used for maintaining the support performance of the flexible substrate and preventing water and oxygen outside the OLED display panel from entering the OLED display panel.
The driving circuit layer 120 is disposed on the substrate 110. The driving circuit layer 120 includes thin film transistors and metal wires arranged in an array, and the thin film transistors are connected to the metal wires to form a driving circuit of the OLED display panel together, and are used for driving the light-emitting functional layer 140 to perform light-emitting display. The driving circuit layer 120 includes a first buffer layer 121, a semiconductor active layer 122, a first insulating layer 123, a gate metal layer 124, a second insulating layer 125, and a source drain layer 126, which are sequentially stacked on the substrate 110. The semiconductor active layer 122 is patterned to form a channel of a thin film transistor, the gate metal layer 124 is patterned to form a gate of the thin film transistor and a scan line of the driving circuit, and the source and drain electrode layer 126 is patterned to form a source and a drain of the thin film transistor and a data line and a power line of the driving circuit. In the embodiment shown in fig. 1 and fig. 2, the thin film transistor is a thin film transistor with a top gate structure, and in other embodiments, the thin film transistor may also be a thin film transistor with a bottom gate structure; in the embodiments shown in fig. 1 and fig. 2, the thin film transistor is a thin film transistor with a single-gate structure, and in other embodiments, the thin film transistor may also be a thin film transistor with a double-gate and triple-gate structure, which is not limited herein.
And a planarization layer 130 formed on the driving circuit layer 120 for planarizing the driving circuit layer 120 and providing a flat substrate for the preparation of the pixel electrode layer 141. The material of the planarization layer 130 is typically organic.
The light emitting function layer 140 includes a pixel electrode layer 141, a pixel defining layer 142, a light emitting material layer 143, and a common electrode layer 144, which are sequentially disposed in a direction away from the substrate 110. The pixel electrode layer 141 is patterned to form a pixel electrode 141; the pixel defining layer 142 is patterned to form a pixel defining region 1421 and a groove 1422, the groove 1422 is disposed between at least two adjacent pixel defining regions 1421, the pixel defining region 1421 corresponds to the pixel electrode 141, and is located on the pixel electrode 141 and exposes the pixel electrode 141; the light emitting material layer 143 is formed in the pixel defining region 1421, and contacts the pixel electrode 141; the common electrode layer 144 is laid on the pixel defining layer 142 and the light emitting material layer 143, and is deposited on the side and the bottom of the recess 1422.
The encapsulation layer 150 is formed on the common electrode layer 144 and is used for encapsulating the OLED display panel and preventing external water and oxygen from entering the light emitting function layer 140, and the encapsulation layer 150 generally includes a first inorganic layer, a second inorganic layer, and an organic layer located between the first inorganic layer and the second inorganic layer. As shown in fig. 1 and 2, the thickness of the encapsulation layer 150 in the recessed region 1422 is greater than the thickness of the encapsulation layer 150 outside the recessed region 1422 and outside the pixel defining region 1421.
The touch layer 160 is formed on the encapsulation layer 150 and includes a second buffer layer 162, a
Specifically, referring to fig. 3, fig. 3 shows a schematic structural diagram of a touch layer according to an embodiment of the present disclosure, as shown in fig. 3, the touch layer 160 includes a second buffer layer 162, a bridge electrode 1611 disposed on the second buffer layer 162, an insulating layer 163 covering the bridge electrode 1611, a first touch electrode 1612 and a second touch electrode 1613 disposed on the insulating layer 163, and the adjacent first touch electrodes 1612 are connected to the same bridge electrode 1611 through vias and cover the passivation layer 164 of the first touch electrode 1612 and the second touch electrode 1613. The first touch electrode 1612 may be a touch driving electrode and the second touch electrode 1613 may be a touch sensing electrode, or the first touch electrode 1612 may be a touch sensing electrode and the second touch electrode 1613 may be a touch driving electrode.
Specifically, referring to fig. 4, fig. 4 shows a schematic plan structure diagram of a touch electrode provided in the present embodiment, as shown in fig. 4, the
At the groove 1422, the common electrode layer 144 is formed at the side and the bottom of the groove, and the
The depth of the groove 1422 is set differently, the distance between the
In the first embodiment, the recess 1422 is located in the pixel defining layer 142, and the bottom of the recess 1422 is located in the pixel defining layer 142. Compared with the prior art, the distance between the
In a second embodiment, as shown in fig. 1, the recess 1422 extends through the pixel defining layer 142, and the bottom of the recess 1422 is located at the interface between the pixel defining layer 142 and the planarization layer 141. Compared with the first embodiment, the distance between the
In the third embodiment, the recess 1422 penetrates through the pixel defining layer 142, and the bottom of the recess 1422 is located in the planarization layer 141. Compared with the second embodiment, the distance between the
In the fourth embodiment, the recess 1422 penetrates through both the pixel defining layer 142 and the planarization layer 141, and the bottom of the recess 1422 is located at the interface between the planarization layer 141 and the driving circuit layer 120. Compared with the third embodiment, the distance between the
In a fifth embodiment, as shown in fig. 2, the recess 1422 includes a first recess portion 1423 and a second recess portion 1424, and the second recess portion 1424 is disposed on a side of the first recess portion 1423 away from the package layer 150. The projection of the second groove part 1424 on the substrate 110 falls within the projection of the first groove part 1423 on the substrate 110 and is smaller than the projection area of the first groove part 1423 on the substrate 110, i.e., the lateral opening L1 of the first groove part 1423 is larger than the lateral opening L2 of the second groove part 1424.
Under the condition that the depth of the groove 1422 is constant and the inclination angle of the side edge of the groove 1422 is constant, the arrangement of the first groove 1423 and the second groove 1424 provides a transition step for the deposition of the common electrode 144 on the side edge of the groove, thereby avoiding the risk of disconnection of the common electrode 144 at the groove 1422 due to the excessively large depth of the groove 1422 or the excessively large inclination angle of the side edge of the groove 1422.
The first recess part 1423 and the second recess part 1424 are both located in the pixel defining layer 142, and the bottom of the second recess part 1424 is located in the pixel defining layer 142. Compared with the first embodiment, the present embodiment also increases the distance between the
In the sixth embodiment, the first recessed portion 1423 and the second recessed portion 1424 are both located in the pixel defining layer 142, and the bottom of the second recessed portion 1424 is located at the interface between the pixel defining layer 142 and the planarization layer 141. Compared with the fifth embodiment, the distance between the
In the seventh embodiment, the first recessed portion 1423 penetrates the pixel defining layer 142, the second recessed portion 1424 is located in the planarization layer 141, and the bottom of the second recessed portion 1424 is located on the planarization layer 141. Compared with the sixth embodiment, the distance between the
In the eighth embodiment, the first groove part 1423 penetrates through the pixel defining layer 142, the second groove part 1424 penetrates through the planarization layer 141, and the bottom of the second groove part 1424 is located at the interface between the planarization layer 141 and the driving circuit layer 120. Compared with the seventh embodiment, the present embodiment further increases the distance between the
In a ninth embodiment, the planarization layer 130 includes a first planarization layer 131 and a second planarization layer 132, the second planarization layer 132 is disposed on a side of the first planarization layer 131 away from the encapsulation layer 150, the first groove portion 1423 penetrates the pixel defining layer 142, the second groove portion 1424 penetrates the first planarization layer 131, and a bottom of the second groove portion 1424 is located at an interface between the first planarization layer 131 and the second planarization layer 132.
Since the planarization layer 130 covers the source/drain layer 126, and the metal lines on the source/drain layer 126 are dense, when the bottom of the recess 1422 is located at the interface between the planarization layer 130 and the driver circuit layer 120, there is a risk that the common electrode 144 is short-circuited with the metal lines on the source/drain layer 126. Compared with the eighth embodiment, in the present embodiment, the bottom of the second recessed portion 1424 is located at the interface between the first planarization layer 131 and the second planarization layer 132, and the common electrode 144 is deposited on the upper surface of the second planarization layer 132, so that the risk of short circuit between the common electrode 144 and the metal line on the source drain layer 126 is avoided.
Meanwhile, this application still provides a display device, display device includes the OLED display panel that this application embodiment provided, OLED display panel includes:
a substrate;
a driving circuit layer formed on the substrate;
a planarization layer formed on the driving circuit layer;
the light-emitting functional layer is formed on the planarization layer and comprises a pixel electrode layer, a pixel definition layer, a light-emitting material layer and a common electrode layer which are sequentially arranged in the direction away from the substrate, the pixel electrode layer is patterned to form a pixel electrode, the pixel definition layer is patterned to form a pixel definition region and a groove, the groove is arranged between at least two adjacent pixel definition regions, the pixel definition region corresponds to the pixel electrode, the light-emitting material layer is formed in the pixel definition region, and the common electrode layer is paved on the pixel definition layer and the light-emitting material layer;
the packaging layer is formed on the common electrode layer, and the thickness of the packaging layer in the groove area is larger than the thickness of the packaging layer outside the groove area and the pixel definition area;
and the touch layer is formed on the packaging layer and comprises a touch electrode, the touch electrode is a grid structure surrounding the pixel definition area, and the projection of the touch electrode on the substrate is at least partially overlapped with the projection of the groove on the substrate.
This embodiment provides a display device, display device includes the OLED display panel that this application was implemented and is provided, OLED display panel passes through the patterning pixel definition layer forms pixel definition district and recess, the recess sets up in at least two adjacent between the pixel definition district, just the recess is in projection on the substrate, with the touch-control electrode is in projection on the substrate exists at least partial coincidence, in the recess district the thickness of encapsulation layer is greater than outside the recess district with outside the pixel definition district the thickness of encapsulation layer has increased the distance between common electrode and the touch-control electrode, has reduced common electrode with parasitic capacitance between the touch-control electrode has improved OLED display panel's touch-control report rate and touch-control sensitivity.
In one embodiment, a projection of the touch electrode on the substrate falls within a projection of the recess on the substrate.
In one embodiment, the bottom of the recess is located within the pixel defining layer.
In one embodiment, the groove extends through the pixel defining layer, and a bottom of the groove is located at an interface of the pixel defining layer and the planarization layer.
In one embodiment, the recess extends through the pixel defining layer, and a bottom of the recess is located within the planarization layer.
In one embodiment, the groove penetrates through both the pixel defining layer and the planarization layer, and the bottom of the groove is located at an interface of the planarization layer and the driving circuit layer.
In one embodiment, the groove includes a first groove portion and a second groove portion, the second groove portion is disposed on a side of the first groove portion away from the encapsulation layer, and a projection of the second groove portion on the substrate falls within a projection of the first groove portion on the substrate and is smaller than a projection area of the first groove portion on the substrate.
In one embodiment, a projection of the touch electrode on the substrate falls within a projection of the second groove portion on the substrate.
In one embodiment, the first and second groove portions are both located within the pixel definition layer, and a bottom of the second groove portion is located within the pixel definition layer.
In one embodiment, the first recess portion and the second recess portion are both located within the pixel defining layer, and a bottom of the second recess portion is located at an interface of the pixel defining layer and the planarization layer.
In one embodiment, the first groove portion extends through the pixel defining layer, the second groove portion is located within the planarization layer, and a bottom of the second groove portion is located within the planarization layer.
In one embodiment, the planarization layer includes a first planarization layer and a second planarization layer, the second planarization layer is disposed on a side of the first planarization layer away from the encapsulation layer, the first groove portion penetrates through the pixel defining layer, the second groove portion penetrates through the first planarization layer, and a bottom of the second groove portion is located on an interface of the first planarization layer and the second planarization layer.
In one embodiment, the first groove portion penetrates the pixel defining layer, the second groove portion penetrates the planarization layer, and a bottom portion of the second groove portion is located at an interface of the planarization layer and the driving circuit layer.
According to the above embodiments:
the embodiment of the application provides an OLED display panel and display device, OLED display panel includes: a substrate; a driving circuit layer formed on the substrate; a planarization layer formed on the driving circuit layer; the light-emitting functional layer is formed on the planarization layer and comprises a pixel electrode layer, a pixel definition layer, a light-emitting material layer and a common electrode layer which are sequentially arranged in the direction away from the substrate, the pixel electrode layer is patterned to form a pixel electrode, the pixel definition layer is patterned to form a pixel definition region and a groove, the groove is arranged between at least two adjacent pixel definition regions, the pixel definition region corresponds to the pixel electrode, the light-emitting material layer is formed in the pixel definition region, and the common electrode layer is paved on the pixel definition layer and the light-emitting material layer; the packaging layer is formed on the common electrode layer, and the thickness of the packaging layer in the groove area is larger than the thickness of the packaging layer outside the groove area and the pixel definition area; and the touch layer is formed on the packaging layer and comprises a touch electrode, the touch electrode is a grid structure surrounding the pixel definition area, and the projection of the touch electrode on the substrate is at least partially overlapped with the projection of the groove on the substrate. Due to the arrangement of the grooves in the pixel definition layer, the distance between the common electrode and the touch electrode is increased, the parasitic capacitance between the common electrode and the touch electrode is reduced, and the touch reporting rate and the touch sensitivity of the OLED display panel are improved.
In summary, although the present application has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application shall be determined by the appended claims.
- 上一篇：一种医用注射器针头装配设备
- 下一篇：阵列基板及其制备方法、显示面板