Display panel and display device

Abstract

The utility model discloses a display panel and a display device. The display panel comprises a substrate, a first electrode layer, a pixel definition layer, a light-emitting layer, a second electrode layer, a touch electrode layer and a shading layer. The light shielding layer is located on the side, facing the substrate, of the pixel defining layer, so that part of light emitted in the direction away from the light emitting side can be shielded by the light shielding layer, and the light leakage amount of the display panel can be reduced. Moreover, the orthographic projection of the shading layer on the substrate is overlapped with the orthographic projection of the touch electrode layer on the substrate, namely, the shading layer and the touch electrode layer are similar in structure, so that the blocking amount of ambient light can be reduced, the light leakage ratio can be reduced, and the brightness adjusting effect of the display device applying the display panel can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel and a display device. BACKGROUND

[0002] The display panel is a device for displaying images and texts.

[0003] Currently, a light sensing device is arranged on the side of the display panel away from the light emitting side, and the light sensing device can be used to receive ambient light so as to realize the function of adjusting brightness according to the received light. During the light emitting process of the display panel, part of the light is reflected or diffracted and emitted in the direction away from the light emitting side, so the light sensing device also receives the part of the light leakage of the display panel.

[0004] However, the more the light leakage of the display panel, the poorer the recognition accuracy of the light sensing device to the ambient light, thereby leading to poor brightness adjustment effect. UTILITY MODEL CONTENT

[0005] The present application provides a kind of. The technical solution is as follows:

[0006] According to an aspect of the present application, a display panel is provided, comprising: a substrate, a first electrode layer, a pixel definition layer, a light emitting layer, a second electrode layer, a touch electrode layer and a light shielding layer;

[0007] The first electrode layer, the pixel definition layer, the light emitting layer and the second electrode layer are stacked on one side of the substrate away from the substrate, the pixel definition layer has a plurality of pixel openings, and at least part of the light emitting layer is located in the plurality of pixel openings;

[0008] The touch electrode layer is located on the side of the second electrode layer away from the substrate;

[0009] The light shielding layer is located on the side of the pixel definition layer toward the substrate, the orthographic projection of the light shielding layer on the substrate overlaps the orthographic projection of the touch electrode layer on the substrate, the light shielding layer has a plurality of first grid holes, the plurality of first grid holes correspond to the plurality of pixel openings, and the orthographic projection of the first grid hole on the substrate overlaps the orthographic projection of the corresponding pixel opening on the substrate.

[0010] Optionally, the orthographic projection of the light shielding layer on the substrate is located in the orthographic projection of the touch electrode layer on the substrate.

[0011] Optionally, the touch electrode layer has a plurality of second mesh holes, the plurality of second mesh holes correspond to the plurality of first mesh holes, and a projection of the second mesh hole on the substrate is located within a projection of the corresponding first mesh hole on the substrate.

[0012] Optionally, the touch electrode layer includes a plurality of first touch lines and a plurality of second touch lines, the extension direction of the first touch line intersects with the extension direction of the second touch line, and the plurality of first touch lines and the plurality of second touch lines are used to enclose the plurality of second mesh holes.

[0013] The light shielding layer includes a plurality of first light shielding strips and a plurality of second light shielding strips, the extension direction of the first light shielding strip is parallel to the extension direction of the first touch line, and the extension direction of the second light shielding strip is parallel to the extension direction of the second touch line; the plurality of first light shielding strips and the plurality of second light shielding strips are used to enclose the plurality of first mesh holes.

[0014] The width of the first light shielding strip is less than or equal to the width of the first touch line, and / or the width of the second light shielding strip is less than or equal to the width of the second touch line.

[0015] Optionally, the light shielding layer has a plurality of first partition openings, the touch electrode layer has a plurality of second partition openings, at least part of the plurality of first partition openings correspond to the plurality of second partition openings, and a projection of the second partition opening on the substrate at least partially overlaps with a projection of the corresponding first partition opening on the substrate.

[0016] Optionally, the light shielding layer is arranged in the same layer as the first electrode layer and has the same material as the first electrode layer.

[0017] Optionally, the first electrode layer includes a plurality of first electrode blocks, the light shielding layer is divided into a plurality of light shielding parts by the first partition openings, the light shielding parts have a first strip and a second strip connected thereto, the first strip is a part of the first light shielding strip between two adjacent first partition openings, and the second strip is a part of the second light shielding strip between two adjacent first partition openings.

[0018] The plurality of light shielding parts correspond to the plurality of first electrode blocks, and the light shielding part is connected to the corresponding first electrode block.

[0019] Optionally, the light shielding layer is arranged separately from the first electrode layer, and the display panel further includes a first power supply trace, the first power supply trace is electrically connected to the light shielding layer.

[0020] Optionally, a part of the light-shielding layer in the orthographic projection on the substrate overlaps with the orthographic projection of the first electrode layer on the substrate, and another part of the light-shielding layer does not overlap with the orthographic projection of the first electrode layer on the substrate.

[0021] Optionally, the display panel further comprises a planar layer, the planar layer is located on a side of the first electrode layer facing the substrate.

[0022] Optionally, a part of the light-shielding layer is located between the first electrode layer and the pixel definition layer, and another part of the light-shielding layer is located between the planar layer and the pixel definition layer.

[0023] Optionally, the pixel definition layer has light transmittance, and the light-shielding layer has light absorption.

[0024] Optionally, the display panel further comprises a first light-adjusting layer and a second light-adjusting layer.

[0025] The first light-adjusting layer is located on a side of the second electrode layer facing away from the substrate, the first light-adjusting layer has a plurality of light-adjusting holes corresponding to the plurality of pixel openings, and the orthographic projection of the light-adjusting hole on the substrate overlaps with the orthographic projection of the corresponding pixel opening on the substrate, and a side of the first light-adjusting layer facing away from the substrate has a groove located between two adjacent light-adjusting holes.

[0026] The second light-adjusting layer is located on a side of the first light-adjusting layer facing away from the substrate, at least part of the second light-adjusting layer is located in the plurality of light-adjusting holes and the groove, and the part of the second light-adjusting layer located in the light-adjusting hole is in contact with the inner wall of the light-adjusting hole, and the part of the second light-adjusting layer located in the groove is in contact with the groove surface of the groove.

[0027] Optionally, the refractive index of the second light-adjusting layer is greater than the refractive index of the first light-adjusting layer.

[0028] Optionally, the groove bottom has a plurality of recessed microstructures.

[0029] Optionally, the display panel further comprises an encapsulation layer, the encapsulation layer is located between the touch electrode layer and the second electrode layer in a direction perpendicular to the substrate, and the first light-adjusting layer is located on a side of the touch electrode layer facing away from the encapsulation layer.

[0030] Optionally, the second electrode layer comprises a plurality of main body parts corresponding to the plurality of pixel openings, and a connecting part connected with the plurality of main body parts, and the orthographic projection of the main body part on the substrate overlaps with the orthographic projection of the corresponding pixel opening on the substrate.

[0031] The thickness of the connecting portion in a direction perpendicular to the substrate is less than or equal to the thickness of the main body portion.

[0032] Optionally, the plurality of main body portions are arranged as a plurality of columns in a first direction and a plurality of rows in a second direction.

[0033] The connecting portion has a plurality of hollowed-out regions, which are distributed between two adjacent main body portions in the first direction and in the second direction.

[0034] Optionally, the display panel further comprises a plurality of cathode selection blocks corresponding to the plurality of hollowed-out regions, the cathode selection blocks being located in the corresponding hollowed-out regions.

[0035] The light transmittance of the cathode selection blocks is greater than the light transmittance of the second electrode layer.

[0036] Optionally, the plurality of main body portions are arranged as a plurality of columns in a first direction and a plurality of rows in a second direction.

[0037] The connecting portion comprises a plurality of first sub-connecting electrodes and a plurality of second sub-connecting electrodes; the first sub-connecting electrodes are connected to two adjacent main body portions; the second sub-connecting electrodes are distributed between two adjacent main body portions in the first direction and in the second direction.

[0038] The thickness of the first sub-connecting electrodes in a direction perpendicular to the substrate is less than or equal to the thickness of the main body portions, and the thickness of the second sub-connecting electrodes is less than or equal to the thickness of the first sub-connecting electrodes.

[0039] Optionally, the second electrode layer comprises a first sub-layer and a second sub-layer stacked in a direction away from the substrate.

[0040] In the case where the thickness of the first sub-connecting electrodes is less than the thickness of the main body portions and the thickness of the second sub-connecting electrodes is equal to the thickness of the first sub-connecting electrodes, a part of the first sub-layer and the second sub-layer are used to form the main body portions, and another part of the first sub-layer is used to form the first sub-connecting electrodes and the second sub-connecting electrodes.

[0041] Alternatively, in the case where the thickness of the first sub-connecting electrodes is equal to the thickness of the main body portions and the thickness of the second sub-connecting electrodes is less than the thickness of the first sub-connecting electrodes, a part of the first sub-layer and the second sub-layer are used to form the main body portions and the first sub-connecting electrodes, and another part of the first sub-layer is used to form the second sub-connecting electrodes.

[0042] In another aspect, a display device is provided, comprising: a power supply component, and a display panel electrically connected with the power supply component, wherein the display panel comprises any of the above display panels.

[0043] The technical scheme provided by the embodiments of the present application has at least the following beneficial effects:

[0044] The light shielding layer is arranged in the display panel and located on the side of the pixel definition layer facing the substrate, thus for the light emitted by the light emitting layer, part of the light emitted in the direction away from the light emitting side can be shielded by the light shielding layer, thereby reducing the light leakage of the display panel. Moreover, the orthographic projection of the light shielding layer on the substrate intersects with the orthographic projection of the touch electrode layer on the substrate, that is, the structure of the light shielding layer is similar to that of the touch electrode layer, so that the blocking amount of ambient light can be reduced, thereby reducing the light leakage ratio, and further improving the brightness adjustment effect of the display device using the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0045] In order to more clearly illustrate the technical schemes in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0046] Figure 1 is a structural schematic diagram of a display device provided by the related art;

[0047] Figure 2 is a partial top view of a display panel provided by an embodiment of the present application;

[0048] Figure 3 is Figure 2 is a cross-sectional schematic diagram of the display panel provided by the present application at A1-A1;

[0049] Figure 4 is Figure 2 is a partial top view of a light shielding layer in the display panel provided by the present application;

[0050] Figure 5 is a partial top view of part of the structure in another display panel provided by an embodiment of the present application;

[0051] Figure 6 is Figure 5 is a cross-sectional schematic diagram of the display panel provided by the present application at A2-A2;

[0052] Figure 7 is a structural schematic diagram of another display panel provided by an embodiment of the present application;

[0053] Figure 8 is a partial top view of a part of structure in a display panel provided by an embodiment of the present application;

[0054] Figure 9 is Figure 8 is a cross-sectional schematic view of a display panel provided by an embodiment of the present application at A3-A3;

[0055] Figure 10 is a structural schematic view of another display panel provided by an embodiment of the present application;

[0056] Figure 11 is a structural schematic view of another display panel provided by an embodiment of the present application;

[0057] Figure 12 is a partial top view of a second electrode layer in a display panel provided by an embodiment of the present application;

[0058] Figure 13 is Figure 12 is a cross-sectional schematic view of a display panel provided by an embodiment of the present application at A4-A4;

[0059] Figure 14 is Figure 12 is another cross-sectional schematic view of a display panel provided by an embodiment of the present application at A4-A4;

[0060] Figure 15 is a partial top view of a second electrode layer in a display panel provided by an embodiment of the present application;

[0061] Figure 16 is Figure 15 is a cross-sectional schematic view of a display panel provided by an embodiment of the present application at A5-A5;

[0062] Figure 17 is Figure 15 is another cross-sectional schematic view of a display panel provided by an embodiment of the present application at A5-A5;

[0063] Figure 18 is Figure 15 is another cross-sectional schematic view of a display panel provided by an embodiment of the present application at A5-A5;

[0064] Figure 19 is a partial top view of a second electrode layer in a display panel provided by an embodiment of the present application;

[0065] Figure 20 is Figure 19 is a cross-sectional schematic view of a display panel provided by an embodiment of the present application at A6-A6;

[0066] Figure 21 is a structural schematic view of another display panel provided by an embodiment of the present application;

[0067] Figure 22 is Figure 21 A cross-sectional schematic view of the display panel provided in the present application at A7-A7.

[0068] The specific embodiments of the present application have been shown and described in the above drawings, which will be described in more detail hereinafter. These drawings and the written description are not intended to restrict the scope of the present application concept in any way, but to illustrate the present application concept to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0069] In order to make the purpose, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0070] Please refer to Figure 1 , Figure 1 is a structural schematic view of a display device provided by the related art, the display device 20 includes a display panel 10 and a light sensing device 21, the light sensing device 21 is located at a second side M2 of the display panel 10 away from a light emitting side M1, the display panel 10 is used for emitting light to realize a display function, and the light sensing device 21 is used for receiving ambient light to realize a function of adjusting brightness and the like. The light received by the light sensing device 21 not only includes ambient light L1 passing through the display panel 10, but also includes leakage light L2 emitted by the display panel 10 towards the second side M2, which is caused by reflection or diffraction of the light emitted by a light emitting layer in the display panel 10 due to a metal film layer or other film layer.

[0071] When the display panel 10 displays a white picture with a brightness of 70 nits under the irradiation of a light emitting diode (LED) light source with an illuminance of 30 lux and a color temperature of 4500 K, the ratio of the leakage light L2 received by the light sensing device 21 to the ambient light L1 passing through the display panel 10 is a leakage ratio. The smaller the leakage ratio is, the more sensitive the light sensing device 21 is to the ambient light, that is, the better the recognition accuracy of the light sensing device 21 to the ambient light is. However, the leakage ratio of the display device 10 provided by the related art is large, which leads to poor recognition accuracy of the light sensing device 21 to the ambient light, thereby leading to poor brightness adjustment effect.

[0072] The present application embodiment provides a display panel, please refer to Figure 2 , Figure 3 and Figure 4 , Figure 2 is a partial top view of a display panel provided by the present application (for the purpose of clearly showing the relative position relationship between the first electrode layer and the touch electrode layer, Figure 2 the pixel definition layer, the light emitting layer and the second electrode layer are not shown, but the present application embodiment is not limited thereto, Figure 3 is Figure 2A cross-sectional view of the display panel provided at A1-A1 is shown in FIG. 1. Figure 4 is Figure 2 A partial top view of a light shielding layer in the display panel provided is shown in FIG. 2. The display panel 10 includes a substrate 11, a first electrode layer 12, a pixel definition layer 13, a light emitting layer 14, a second electrode layer 15, a touch electrode layer 16, and a light shielding layer 17.

[0073] The display panel 10 provided by the embodiments of the present application can be an organic light emitting diode (OLED) display panel. The OLED display panel has many advantages, such as self-emission, low driving voltage, high luminous efficiency, short response time, high definition and contrast, wide temperature range of use, flexible display, and large-area full-color display.

[0074] The substrate 11 can be used to carry other structures in the display panel 10. The substrate 11 can be a flexible substrate, and the material of the flexible substrate can include polyimide (PI) or other flexible materials. The substrate 11 can also be a rigid substrate, and the material of the rigid substrate can include glass.

[0075] The first electrode layer 12, the pixel definition layer 13, the light emitting layer 14, and the second electrode layer 15 are stacked on one side of the substrate 11 in a direction away from the substrate 11. The pixel definition layer 13 has a plurality of pixel openings K3, and at least part of the light emitting layer 14 is located in the plurality of pixel openings K3. The plurality of pixel openings K3 of the pixel definition layer 22 can be used to divide a plurality of light emitting devices. One light emitting device can include a first electrode block, a light emitting block, and a main body part stacked together. The first electrode block is part of the first electrode layer 12, the light emitting block is part of the light emitting layer 14, and the main body part is part of the second electrode layer 15.

[0076] The first electrode layer 12 can be an anode, the second electrode layer 15 can be a cathode, and the light emitting layer 14 can be an organic light emitting layer. A driving circuit can also be disposed on the substrate 11, and the driving circuit is electrically connected to the first electrode layer 12 and the second electrode layer 15. In this way, under the control of the driving circuit, the first electrode layer 12 and the second electrode layer 15 can cooperate to drive the light emitting layer 14 to emit light.

[0077] The touch electrode layer 16 is located on the side of the second electrode layer 15 away from the substrate 11. Here, the touch electrode layer 16 can be a grid-shaped metal electrode layer. For example, the touch electrode layer 16 has a plurality of second grid holes K2 corresponding to the plurality of pixel openings K3 one by one, and the orthographic projection of each pixel opening K3 on the substrate 11 can be located within the orthographic projection of the corresponding second grid hole K2 on the substrate 11. That is, the orthographic projection of the touch electrode layer 16 on the substrate 11 does not overlap with the orthographic projection of the pixel opening K3 on the substrate 11. Therefore, even if the material of the touch electrode layer 16 is a lightproof metal material, it can be ensured that the touch electrode layer 16 will not block the light-emitting layer 14 located in the pixel opening K3, so that the light emitted by the light-emitting layer 14 can be transmitted from the corresponding second grid hole K2 of the touch electrode layer 16, thereby ensuring that the display panel 10 can normally display a picture.

[0078] The light shielding layer 17 is located on the side of the pixel definition layer 13 facing the substrate 11, the orthographic projection of the light shielding layer 17 on the substrate 11 overlaps with the orthographic projection of the touch electrode layer 16 on the substrate 11, and the light shielding layer 17 has a plurality of first grid holes K1 corresponding to the plurality of pixel openings K3, and the orthographic projection of the first grid hole K1 on the substrate 11 overlaps with the orthographic projection of the corresponding pixel opening K3 on the substrate 11.

[0079] Here, the light shielding layer 17 is arranged between the pixel definition layer 13 and the substrate 11, and when the light leakage of the display panel 10 enters the area of the pixel opening K3, it can be blocked by the first electrode layer 12, and when the light leakage of the display panel 10 enters the area other than the pixel opening K3, it can be blocked by at least part of the light shielding layer 17, thereby reducing the risk of light leakage being received by the light sensor through the substrate 11. The shape of the light shielding layer 17 is similar to that of the touch electrode layer 16, which is also a grid-shaped film layer, so that the risk of ambient light being blocked by the light shielding layer 17 after passing through the touch electrode layer 16 is low, thereby reducing the light leakage ratio and improving the brightness adjustment effect of the display device using the display panel.

[0080] It should be noted that, Figure 4 Only a pattern of the light shielding layer 17 is shown by way of example, but the embodiments of the present application do not limit this.

[0081] In summary, the display panel provided by the embodiments of the present application is provided with a light shielding layer, which is located on the side of the pixel definition layer facing the substrate. Therefore, among the light emitted by the light emitting layer, part of the light emitted in the direction away from the light emitting side can be shielded by the light shielding layer, so that the light leakage of the display panel can be reduced. Moreover, the orthographic projection of the light shielding layer on the substrate intersects with the orthographic projection of the touch electrode layer on the substrate, that is, the structure of the light shielding layer is similar to that of the touch electrode layer. In this way, the blocking amount of ambient light can be reduced, so that the light leakage ratio can be reduced, and thus the brightness adjustment effect of the display device using the display panel can be improved.

[0082] In the present application, the light leakage ratio is related to the light leakage amount and the amount of ambient light passing through the display panel 000. That is, in order to reduce the light leakage ratio, the balance between increasing the shielding of light leakage and reducing the shielding of ambient light needs to be considered. Among them, for the light shielding layer 17, the shielding of ambient light by the light shielding layer 17 can be reduced by adjusting the structure of the light shielding layer 17. The structure of the light shielding layer 17 is described below:

[0083] Optionally, the orthographic projection of the light shielding layer 17 on the substrate 11 is located within the orthographic projection of the touch electrode layer 16 on the substrate 11. In this way, when the ambient light from the outside irradiates the display panel, part of the ambient light will be blocked by the touch electrode layer 16, and another part of the ambient light can be transmitted from the corresponding second grid hole K2 of the touch electrode layer 16. When this part of the ambient light reaches the light shielding layer 17, it can also be transmitted from the first grid hole K1, so that the light shielding layer 17 can avoid affecting the transmission amount of ambient light, and thus the light leakage amount can be reduced while ensuring that the transmission amount of ambient light is basically not reduced, that is, the light leakage ratio can be effectively reduced.

[0084] Optionally, the touch electrode layer 16 has a plurality of second grid holes K2, and the plurality of second grid holes K2 correspond to the plurality of first grid holes K1. The orthographic projection of the second grid hole K2 on the substrate 11 is located within the orthographic projection of the corresponding first grid hole K1 on the substrate 11. In this way, not only can the structure of the first grid hole K1 in the light shielding layer 17 be similar to that of the second grid hole K2 in the touch electrode layer 16, but also the size of the first grid hole K1 in the light shielding layer 17 can be larger or the same as that of the second grid hole K2 in the touch electrode layer 16, so that the ambient light transmitted from the second grid hole K2 can be transmitted from the first grid hole K1, and thus the light shielding layer 17 can avoid affecting the transmission amount of ambient light.

[0085] Optionally, the touch electrode layer 16 includes a plurality of first touch lines 161 and a plurality of second touch lines 162. The extension direction of the first touch line 161 intersects with the extension direction of the second touch line 162, and the plurality of first touch lines 161 and the plurality of second touch lines 162 are used to enclose a plurality of second grid holes K2.

[0086] The light shielding layer 17 comprises a plurality of first light shielding strips 171 and a plurality of second light shielding strips 172, the extension direction of the first light shielding strips 171 is parallel to the extension direction of the first touch control lines 161, and the extension direction of the second light shielding strips 172 is parallel to the extension direction of the second touch control lines 162. The plurality of first light shielding strips 171 and the plurality of second light shielding strips 172 are used to enclose a plurality of first grid holes K1. In this way, the structure of the first grid holes K1 in the light shielding layer 17 can be further made to have a higher similarity with the structure of the second grid holes K2 in the touch electrode layer 16.

[0087] The width of the first light shielding strips 171 is less than or equal to the width of the first touch control lines 161, and / or the width of the second light shielding strips 172 is less than or equal to the width of the second touch control lines 162.

[0088] For the case where the width of the first light shielding strips 171 is equal to the width of the first touch control lines 161, and the width of the second light shielding strips 172 is equal to the width of the second touch control lines 162, the light shielding layer 17 can maximize the degree of shielding of the light leakage on the basis of avoiding shielding of ambient light. For the case where the width of the first light shielding strips 171 is less than the width of the first touch control lines 161, and the width of the second light shielding strips 172 is less than the width of the second touch control lines 162, it can also be ensured that the light shielding layer 17 will not shield ambient light, and the fault tolerance to manufacturing errors and the like can be increased. Therefore, by setting the width of the first light shielding strips 171 and the second light shielding strips 172, the plurality of second grid holes K2 enclosed by the first light shielding strips 171 and the second light shielding strips 172 can not shield the ambient light after passing through the touch electrode layer 16, and only shield the light leakage of the display panel, thereby effectively reducing the light shielding ratio.

[0089] Optionally, the light shielding layer 17 has a plurality of first partitioning openings G1, the touch electrode layer 16 has a plurality of second partitioning openings G2, at least part of the plurality of first partitioning openings G1 correspond to the plurality of second partitioning openings G2, and the orthographic projection of the second partitioning openings G2 on the substrate 11 at least partially overlaps the orthographic projection of the corresponding first partitioning openings G1 on the substrate 11. That is, the plurality of first partitioning openings G1 can correspond one-to-one to the plurality of second partitioning openings G2, or only a part of the plurality of first partitioning openings G1 correspond to the plurality of second partitioning openings G2.

[0090] It should be noted that the orthographic projection of the second partition port G2 on the substrate 11 at least partially coincides with the orthographic projection of the corresponding first partition port G1 on the substrate 11, including two cases. One case is "partial coincidence", which can ensure that the setting positions of the second partition port G2 and the corresponding first partition port G1 are similar, and can avoid shielding ambient light. The other case is "complete coincidence", which can maximize the shielding degree of the light shielding layer 17 to the light leakage on the basis of avoiding shielding ambient light. However, based on the manufacturing error of the actual process, the embodiment of the present application does not strictly require "complete coincidence".

[0091] The touch electrode layer 16 can include a touch driving electrode and a touch sensing electrode. Through the mutual cooperation of the touch driving electrode and the touch sensing electrode, the capacitance change of the area touched by the user on the display panel 000 can be detected to locate the position of the touch area through the capacitance change, so that the touch function can be realized. The touch driving electrode and the touch sensing electrode each include a part of the first touch line 161 and a part of the second touch line 162. In order to ensure that there is no short circuit phenomenon between the adjacent touch driving electrode and the touch sensing electrode, a plurality of second partition ports G2 can be arranged on the first touch line 161 and the second touch line 162, so that the adjacent touch driving electrode and the touch sensing electrode can be disconnected through the second partition port G2. The setting position of the second partition port G2 can be determined according to the shape structure of the touch driving electrode and the touch sensing electrode. Figure 2 Only one setting condition of the second partition port G2 is shown by way of example, and the embodiment of the present application does not limit this.

[0092] The plurality of first partition ports G1 of the light shielding layer 17 can be used to improve the structural similarity of the light shielding layer 17 and the touch electrode layer 16. The plurality of first partition ports G1 of the light shielding layer 17 will not shield light, so setting the first partition port G1 can avoid shielding the ambient light by the light shielding layer 17, and the number and position of the first partition port G1 will affect the amount of ambient light passing through the display panel 000.

[0093] In the case that the plurality of first partition ports G1 can correspond to the plurality of second partition ports G2 one by one, the number and setting position of the plurality of first partition ports G1 and the plurality of second partition ports G2 can be the same, which can maximize the shielding degree of the light shielding layer 17 to the light leakage on the basis of avoiding shielding ambient light.

[0094] In the case that only a part of the plurality of first partition ports G1 corresponds to the plurality of second partition ports G2, the number of the first partition ports G1 is greater than the number of the plurality of second partition ports G2. In this way, it can also be ensured that the light shielding layer 17 does not shield the ambient light after passing through the touch electrode layer 16, but the shielding degree of the light shielding layer 17 to the light leakage is less than the first case.

[0095] In the embodiments of the present application, the setting position of the light shielding layer 17 includes various cases, which are described below by taking two exemplary embodiments as examples.

[0096] In the first exemplary embodiment, refer to Figure 5 and Figure 6 , Figure 5 is a partial top view of another part of the structure of the display panel provided by the embodiments of the present application, Figure 6 is Figure 5 a cross-sectional view of the display panel provided by the embodiments of the present application at A2-A2. The light shielding layer 17 is provided in the same layer as the first electrode layer 12 and is made of the same material, so that the first electrode layer 12 and the light shielding layer 17 can be manufactured simultaneously by one patterning process, thereby simplifying the process and without increasing the overall thickness of the display panel. In the embodiments of the present application, the patterning process can include photoresist coating, exposure, development, etching, and photoresist stripping, etc.

[0097] For example, the material of the first electrode layer 12 can be a metal material with high light reflectivity, and the material of the light shielding layer 17 can also be a metal material with high light reflectivity. Therefore, the light shielding layer 17 can reflect the light leakage of the display panel, thereby avoiding the light leakage from being received by the light sensing device. In addition, the plurality of first grid holes K1 of the light shielding layer 17 correspond to the plurality of pixel openings K3, and the orthographic projection of the first grid hole K1 on the substrate 11 and the orthographic projection of the corresponding pixel opening K3 on the substrate 11 overlap, so that the gap region in the first electrode layer 12 can be provided with the light shielding layer 17.

[0098] In addition, the present application also simulates the light leakage ratio of the display panel provided by the embodiments of the present application and the display panel provided by the related technology. The light leakage ratio simulation results are shown in Table 1, which is a comparison table of the light leakage amount, the ambient light amount and the light leakage ratio of the display panel provided by the embodiments of the present application and the display panel provided by the related technology. The structure of the display panel provided by the embodiments of the present application corresponding to Table 1 can refer to Figure 5 and Figure 6 The display panel provided by the related technology corresponding to Table 1 does not have a light shielding layer. As can be seen from the light leakage ratio simulation results in Table 1, by setting the light shielding layer, the present application can effectively reduce the light leakage amount, and the light shielding layer has little effect on the ambient light amount, so that the light leakage ratio of the display panel provided by the embodiments of the present application can be effectively reduced. Compared with the display panel provided by the related technology, the light leakage ratio of the display panel provided by the embodiments of the present application is reduced by about 21.5%, thereby improving the brightness adjustment effect of the display device using the display panel.

[0099] Table 1

[0100]

[0101] In the present application, the connection relationship between the first electrode layer 12 and the light shielding layer 17 includes two cases:

[0102] In the first case, the first electrode layer 12 includes a plurality of first electrode blocks 121, which can belong to different light emitting devices. For example, the first electrode block 121 can have a protruding portion T1, which can facilitate electrical connection with the pixel driving circuit.

[0103] The light shielding layer 17 is divided into a plurality of light shielding portions 173 by the first partition port G1, and the light shielding portion 173 has a first strip body 171a and a second strip body 172a connected thereto. The first strip body 171a is a portion of the first light shielding strip 171 located between two adjacent first partition ports G1, and the second strip body 172a is a portion of the second light shielding strip 172 located between two adjacent first partition ports G1. In this way, each light shielding portion 173 is disconnected, i.e., each light shielding portion 173 is separately arranged. For example, the shape of the light shielding portion 173 composed of the first strip body 171a and the second strip body 172a can be a "cross" shape.

[0104] Among them, the plurality of light shielding portions 173 correspond to the plurality of first electrode blocks 121, and the light shielding portion 173 is connected to the corresponding first electrode block 121. Since the material of the light shielding layer 17 and the material of the first electrode layer 12 are both conductive materials, when the light shielding portion 173 is connected to the corresponding first electrode block 121, the first partition port G1 is used to separate the arrangement of each light shielding portion 173, which can ensure that each first electrode block 121 is also separated from each other, thereby avoiding short circuit between adjacent two first electrode blocks 121, and further ensuring that each light emitting device can be controlled independently. For example, the normal projection of the protruding portion T1 on the substrate 11 overlaps the normal projection of the touch electrode layer 16 on the substrate 11, and the light shielding portion 173 can be connected to the first electrode block 121 at the protruding portion T1.

[0105] It should be noted that since the light shielding portion 173 is connected to the corresponding first electrode block 121, when the first electrode block 121 is connected to the electrical signal, the corresponding light shielding portion 173 will also be connected to the same electrical signal, avoiding the light shielding portion 173 in a floating state, thereby reducing the risk of electrostatic breakdown.

[0106] In the second case, please refer to Figure 7 , Figure 7is another structural schematic diagram of a display panel provided by an embodiment of the present application. The light shielding layer 17 is arranged separately from the first electrode layer 12, that is, the light shielding layer 17 is disconnected from the first electrode layer 12. The display panel 10 further includes a first power supply wire 111, which is electrically connected with the light shielding layer 17. In a direction perpendicular to the substrate 11, the first power supply wire 111 can be located between the substrate 11 and the first electrode layer 12. In this case, the first power supply signal (VDD) can be input to the light shielding layer 17 through the first power supply wire 111, and the light shielding layer 17 is also prevented from being in a floating state, thereby reducing the risk of electrostatic breakdown. The first power supply wire 111 can be distributed in a peripheral region in the display panel, and the connection position of the light shielding layer 17 and the first power supply wire 111 can also be in the peripheral region.

[0107] In the present application, the light shielding layer 17 can also input other signals. For example, the display panel 10 further includes a plurality of pixel driving circuits, which can be located on a side of the first electrode layer 12 facing the substrate 11. The pixel driving circuit can include a light emitting control transistor and a reset control transistor. The pixel driving circuit includes a fourth node connected with the light emitting device, the light emitting control transistor and the reset control transistor. The light shielding layer 17 can be electrically connected with the fourth node to input a fourth node signal (N4).

[0108] In a second exemplary embodiment, refer to Figure 8 and Figure 9 , Figure 8 is a partial top view of part of a structure of another display panel provided by an embodiment of the present application, Figure 9 is Figure 8 a cross-sectional schematic diagram of the display panel at A3-A3. The light shielding layer 17 and the first electrode layer 12 can also be formed by different patterning processes. For example, the light shielding layer 17 can be formed after the first electrode layer 12 and before the pixel definition layer 13.

[0109] Optionally, a part of the light shielding layer 17 in the orthographic projection on the substrate 11 overlaps with the orthographic projection of the first electrode layer 12 on the substrate 11, and another part does not overlap with the orthographic projection of the first electrode layer 12 on the substrate 11. This is because a part of the orthographic projection of the touch electrode layer 16 on the substrate 11 also overlaps with the orthographic projection of the first electrode layer 12 on the substrate 11, and the position of the orthographic projection overlap is outside the pixel opening K3, and will not affect the light emission of the light emitting layer 14.

[0110] Optionally, the display panel 10 further comprises a planar layer 112, which is located on the side of the first electrode layer 12 facing the substrate 11. In the present application, the substrate 11 is provided with a driving circuit, which comprises a plurality of thin film transistors 113, and the planar layer 112 can cover the driving circuit to improve the flatness and provide a flat surface for the first electrode layer 12. In addition, the planar layer 112 can play an insulating role before the driving circuit and the first electrode layer 12 to avoid short circuit.

[0111] In the present application, a part of the light shielding layer 17 is located between the first electrode layer 12 and the pixel definition layer 13, and another part of the light shielding layer 17 is located between the planar layer 112 and the pixel definition layer 13. That is, at the position where the light shielding layer 17 and the first electrode layer 12 are projected and overlapped, a part of the light shielding layer 17 is located between the first electrode layer 12 and the pixel definition layer 13. For example, at the position corresponding to the protruding part T1 in the first electrode layer 12, the light shielding layer 17 is located between the first electrode layer 12 and the pixel definition layer 13. At the position where the light shielding layer 17 and the first electrode layer 12 are not projected and overlapped, a part of the light shielding layer 17 is located between the planar layer 112 and the pixel definition layer 13.

[0112] Optionally, the pixel definition layer 13 has light transmittance, so that ambient light can pass through the pixel definition layer 13. The light shielding layer 17 has light absorption, so that the light shielding layer 17 can absorb the light leakage of the display panel, thereby avoiding the light leakage from being received by the light sensing device, and further reducing the light leakage ratio. For example, the material of the light shielding layer 17 can include black polyimide.

[0113] It should be noted that the present application is not limited to the above two exemplary embodiments of the setting position of the light shielding layer 17. For example, the light shielding layer 17 can also be formed before the first electrode layer 12, that is, in the direction perpendicular to the substrate 11, the light shielding layer 17 can be located between the planar layer 112 and the substrate 11.

[0114] In the embodiments of the present application, the light leakage ratio can also be reduced by increasing the amount of ambient light passing through the display panel, which will be described in two exemplary embodiments as follows:

[0115] In the first exemplary embodiment, the amount of ambient light passing through the display panel can be increased by setting a first light adjusting layer and a second light adjusting layer. Please refer to Figure 10 , Figure 10 is another structure diagram of a display panel provided by the embodiments of the present application. The display panel 10 further comprises a first light adjusting layer 181 and a second light adjusting layer 182.

[0116] The first light-adjusting layer 181 is located on the side of the second electrode layer 15 away from the substrate 11, and the first light-adjusting layer 181 has a plurality of light-adjusting holes K4 corresponding to the plurality of pixel openings K3, and the orthographic projection of the light-adjusting hole K4 on the substrate 11 overlaps with the orthographic projection of the corresponding pixel opening K3 on the substrate 11. The side of the first light-adjusting layer 181 away from the substrate 11 has a groove B1 between two adjacent light-adjusting holes K4.

[0117] The second light-adjusting layer 182 is located on the side of the first light-adjusting layer 181 away from the substrate 11, and at least part of the second light-adjusting layer 182 is located in the plurality of light-adjusting holes K4 and the groove B1, and the part of the second light-adjusting layer 182 located in the light-adjusting hole K4 is in contact with the inner wall of the light-adjusting hole K4, and the part of the second light-adjusting layer 182 located in the groove B1 is in contact with the groove surface of the groove B1.

[0118] The refractive index of the second light-adjusting layer 182 is greater than the refractive index of the first light-adjusting layer 181. Due to the difference in refractive index between the first light-adjusting layer 181 and the second light-adjusting layer 182, the first light-adjusting layer 181 and the second light-adjusting layer 182 can adjust the path of light.

[0119] On the one hand, the first light-adjusting layer 181 and the second light-adjusting layer 182 can adjust the path of ambient light. In the ambient light entering the display panel, a part of light with a large angle (for example, light L3) may reach the inner wall of the groove B1 of the first light-adjusting layer 181, that is, the interface between the first light-adjusting layer 181 and the second light-adjusting layer 182. Since the refractive index of the second light-adjusting layer 182 is greater than the refractive index of the first light-adjusting layer 181, the light L3 will be refracted at the inner wall of the groove B1. According to the law of refraction, the incident angle of the light L3 is smaller than the exit angle, that is, the exit direction of the light L3 can be deflected towards the direction perpendicular to the substrate 11. Therefore, the light L3 will not be reflected by the first electrode layer 12, so as to increase the amount of ambient light, and further reduce the light leakage ratio.

[0120] On the other hand, the first light-adjusting layer 181 and the second light-adjusting layer 182 can adjust the path of light emitted by the light-emitting layer 14. In the light emitted by the light-emitting layer 14, a part of light with a large angle (for example, light L4) may reach the inner wall of the light-adjusting hole K4, that is, the interface between the first light-adjusting layer 181 and the second light-adjusting layer 182. Since the refractive index of the second light-adjusting layer 182 is greater than the refractive index of the first light-adjusting layer 181, and the incident angle of the light L4 is large, greater than the critical angle, the light L4 will be totally reflected at the inner wall of the groove B1. The large-angle light can be deflected towards the forward light-emitting direction, so as to increase the amount of forward light emission, reduce the amount of light leakage caused by emission or diffraction, and further reduce the light leakage ratio.

[0121] It should be noted that, Figure 10The illustration only shows one example of the structure of the groove B1, in which the cross-section of the groove B1 perpendicular to the substrate 11 is trapezoidal, meaning that both the inner wall and the bottom of the groove B1 are planar. However, this application is not limited to this. For example, the inner wall and bottom of the groove B1 can also be curved surfaces, in which case the cross-section of the groove B1 perpendicular to the substrate 11 can be a curved trapezoid or a semicircle, thereby increasing the area of ​​the region in the groove B1 where light can be refracted, and thus increasing the amount of ambient light.

[0122] Alternatively, please refer to Figure 11 , Figure 11 This is a schematic diagram of another display panel structure provided in an embodiment of this application. The bottom of the groove B1 has multiple recessed microstructures B11. Here, the multiple recessed microstructures B11 can cause light to be refracted at the bottom of the groove B1, thereby increasing the area of ​​the groove B1 where light can be refracted, and thus increasing the amount of ambient light.

[0123] The structure of the recessed microstructure B11 includes various cases, exemplified by... Figure 11 The cross-section of the recessed microstructure B11 perpendicular to the substrate 11 shown is semi-circular. In addition, it can also be trapezoidal or curved trapezoidal. This application embodiment does not limit this.

[0124] In this application, the groove B1 and dimming aperture K4 of the first dimming layer 181 can be fabricated using a halftone mask (HTM). For example, after forming the entire first dimming layer 181, the first dimming layer 181 can be exposed and developed using a halftone mask. Since the halftone mask includes multiple regions with different transmittances, the halftone mask can control the degree of light transmission to achieve different levels of exposure for multiple regions, thereby adjusting the depth of the dimming aperture K4, the groove B1, and the recessed microstructure B11, thus forming the dimming aperture K4 and the groove B1 with multiple recessed microstructures B11.

[0125] Optionally, the display panel 10 further includes an encapsulation layer 19, which can cover the second electrode layer 15 to encapsulate each light-emitting device, preventing water and oxygen in the external environment from corroding the light-emitting layer 13 and avoiding the failure of the light-emitting layer 13. For example, the encapsulation layer 19 can be a stacked structure, which may include a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer stacked together. The encapsulation layer 19 can also be a single-layer structure, in which case it can be a first inorganic encapsulation layer. In this case, the side of the touch electrode layer 16 facing away from the encapsulation layer 19 can be provided with an organic encapsulation layer and a second inorganic encapsulation layer, that is, the touch electrode layer 16 can be disposed within the stacked encapsulation layer.

[0126] In the direction perpendicular to the substrate 11, the encapsulation layer 19 is located between the touch electrode layer 16 and the second electrode layer 15, and the first light-adjusting layer 181 is located on the side of the touch electrode layer 16 away from the encapsulation layer 19. In this way, the first light-adjusting layer 181 can also play a protective role for the touch electrode layer 16, and the second light-adjusting layer 182 can also play a flatness role, and the second light-adjusting layer 182 can be multiplexed as a cover layer, thereby reducing the thickness of the display panel.

[0127] In addition, without considering the reduction of the thickness of the display panel, the first light-adjusting layer 181 and the second light-adjusting layer 182 can also be arranged between the touch electrode layer 16 and the encapsulation layer 19, so as to avoid the recess B1 being close to the touch electrode layer 16, thereby reducing the risk of light being reflected by the touch electrode layer 16 after refraction.

[0128] It should be noted that, Figure 10 and Figure 11 The embodiments shown are the combination of the scheme of the light-shielding layer 17 and the scheme of the first light-adjusting layer 181 and the second light-adjusting layer 182, but the embodiments of the present application can also only use the first light-adjusting layer 181 and the second light-adjusting layer 182 to reduce the light leakage ratio, and the embodiments of the present application will not be described here.

[0129] In a second exemplary embodiment, the amount of ambient light passing through the display panel can be increased by setting the thickness of the second electrode layer. Please refer to Figure 12 and Figure 13 , Figure 12 is another partial top view of the second electrode layer in the display panel provided by the embodiments of the present application, Figure 13 is Figure 12 is a cross-sectional schematic view of the display panel at A4-A4. The second electrode layer 15 includes a plurality of main parts 151 corresponding to a plurality of pixel openings K3, and a connecting part 152 connected with the plurality of main parts 151, and the orthographic projection of the main part 151 on the substrate 11 overlaps with the orthographic projection of the corresponding pixel opening K3 on the substrate 11. Here, the main part 151 can serve as the cathode of the light-emitting device, so as to facilitate the anode of the light-emitting device to drive the light-emitting layer to emit light. The connecting part 152 can connect the plurality of main parts 151 together to realize the effect of common cathode, so as to facilitate the control of the light-emitting function of the plurality of light-emitting devices. Here, the main part 151 can be block-shaped, and the connecting part 152 can be grid-shaped. Exemplarily, the material of the second electrode layer 15 can be indium tin oxide.

[0130] In the direction perpendicular to the substrate 11, the thickness of the connecting portion 152 is less than or equal to the thickness of the main body portion 151. That is, the thickness of the connecting portion 152 is less than the thickness of the main body portion 151, or the thickness of the connecting portion 152 is equal to the thickness of the main body portion 151, or the thickness of a part of the connecting portion 152 is less than the thickness of the main body portion 151, and the thickness of another part of the connecting portion 152 is equal to the thickness of the main body portion 151.

[0131] In the case where the thickness of at least part of the connecting portion 152 is less than the thickness of the main body portion 151, since the connecting portion 152 is located outside the pixel opening K3, the connecting portion 152 plays a connecting role and does not directly control the light-emitting function of the light-emitting device, and therefore, the present application can improve the transmittance of the connecting portion 152 with less impact on the light-emitting function of the light-emitting device, so as to improve the ambient light quantity and further reduce the light leakage ratio.

[0132] Since the thickness of the connecting portion 152 affects the resistance of the connecting portion 152, in order to ensure that the voltage drop change of the second electrode layer 15 is small, in the display panel provided by the embodiment of the present application, the ratio of the thickness of the connecting portion 152 to the thickness of the main body portion 151 can be in the range of 66%-100%. For example, the thickness of the connecting portion 152 can be 10 nanometers, and the thickness of the main body portion 151 can be 15 nanometers, so as to effectively increase the ambient light quantity and reduce the light leakage ratio with less impact on the signal input to the second electrode layer 15.

[0133] In the present application, various implementation manners can be adopted to adjust the thickness of the connecting portion 152 and the thickness of the main body portion 151. The following two embodiments are described:

[0134] In the first implementation manner, the second electrode layer 15 can be manufactured by a patterning process. For example, after forming the second electrode layer 15 as a whole layer, photoresist can be coated on the surface of the second electrode layer 15, and the photoresist can be exposed and developed by using a half-tone mask. Since the half-tone mask includes multiple regions with different light transmittances, the half-tone mask can control the light transmittance to achieve different degrees of exposure of the multiple regions of the photoresist, so as to adjust the etching depth of the regions corresponding to the connecting portion 152 and the main body portion 151, and further make the thickness of the connecting portion 152 less than the thickness of the main body portion 151.

[0135] In the second implementation manner, please refer to Figure 14 , Figure 14 is Figure 12 Another schematic cross-sectional view of the display panel provided by the present application at A4-A4 is shown. The second electrode layer 15 includes a first sub-layer 15a and a second sub-layer 15b which are stacked in the direction away from the substrate 11.

[0136] The first sub-layer 15a can be a whole layer structure, and the second sub-layer 15b can be a structure with multiple openings. The main body part 151 can be composed of a part of the first sub-layer 15a and a part of the second sub-layer 15b. At least part of the connecting part 152 is composed of only a part of the second sub-layer 15b. In this way, the thickness of at least part of the connecting part 152 can be less than the thickness of the main body part 151.

[0137] To this end, the embodiment of the present application can first evaporate the first sub-layer 15a as a whole layer by using an open mask, and then form the second sub-layer 15b by a patterning process. In this way, the first sub-layer 15a can protect the light-emitting layer 14 during the formation of the second sub-layer 15b, thereby avoiding the risk of water and oxygen invading the light-emitting layer 14 caused by the patterning process.

[0138] In the present application, the thickness of the connecting part can also be adjusted to reduce the light leakage ratio. Please refer to Figure 2 and Figure 15 , Figure 15 is another partial top view of the second electrode layer in a display panel provided by the embodiment of the present application. The plurality of main body parts 151 are arranged as multiple columns along the first direction X and as multiple rows along the second direction Y. Here, the shape and arrangement of the plurality of main body parts 151 can be similar to the shape and arrangement of the plurality of first electrode blocks of the first electrode layer 12, so as to form light-emitting devices with the light-emitting blocks in the corresponding light-emitting layer 14.

[0139] The connecting part 152 includes a plurality of first sub-connection electrodes 152a and a plurality of second sub-connection electrodes 152b. The first sub-connection electrodes 152a are connected to two adjacent main body parts 151. The second sub-connection electrodes 152b are distributed between two adjacent main body parts 151 in the first direction X and between two adjacent main body parts 151 in the second direction Y. Here, the first sub-connection electrodes 152a can be in a strip shape. The extension direction of a part of the plurality of first sub-connection electrodes 152a can be parallel to the extension direction of the first touch control line 161, and the extension direction of another part can be parallel to the extension direction of the second touch control line 162. The second sub-connection electrodes 152b can be in a block shape. The shape of the second sub-connection electrodes 152b is determined by the shape of the main body part 151, and the embodiment of the present application does not limit this.

[0140] In the direction perpendicular to the substrate 11, the thickness of the first sub-connection electrode 152a is less than or equal to the thickness of the main body part 151, and the thickness of the second sub-connection electrode 152b is less than or equal to the thickness of the first sub-connection electrode 152a. This includes the following three cases that can reduce the light leakage ratio:

[0141] 1) Please refer to Figure 16 , Figure 16 isFigure 15 A cross-sectional schematic view of the display panel provided by the present application at A5-A5, the thickness of the first sub-connection electrode 152a is less than or equal to the thickness of the main body 151, and the thickness of the second sub-connection electrode 152b is equal to the thickness of the first sub-connection electrode 152a.

[0142] In the first case, the embodiments of the present application can be realized by a patterning process. Alternatively, the embodiments of the present application can be realized by setting the first sub-layer 15a and the second sub-layer 15b, and then a part of the first sub-layer 15a and the second sub-layer 15b are used to form the main body 151, and another part of the first sub-layer 15a is used to form the first sub-connection electrode 152a and the second sub-connection electrode 152b.

[0143] 2) Please refer to Figure 17 , Figure 17 is Figure 15 Another cross-sectional schematic view of the display panel provided by the present application at A5-A5, the thickness of the first sub-connection electrode 152a is equal to the thickness of the main body 151, and the thickness of the second sub-connection electrode 152b is less than the thickness of the first sub-connection electrode 152a.

[0144] In the second case, the embodiments of the present application can be realized by a patterning process. Alternatively, the embodiments of the present application can be realized by setting the first sub-layer 15a and the second sub-layer 15b, and then a part of the first sub-layer 15a and the second sub-layer 15b are used to form the main body 151 and the first sub-connection electrode 152a, and another part of the first sub-layer 15a is used to form the second sub-connection electrode 152b.

[0145] 3) Please refer to Figure 18 , Figure 18 is Figure 15 Another cross-sectional schematic view of the display panel provided by the present application at A5-A5, the thickness of the first sub-connection electrode 152a is less than the thickness of the main body 151, and the thickness of the second sub-connection electrode 152b is less than the thickness of the first sub-connection electrode 152a.

[0146] In the third case, the embodiments of the present application can be realized by a patterning process. Since the thickness of the first sub-connection electrode 152a, the thickness of the main body 151 and the thickness of the second sub-connection electrode 152b are all different, the method of setting multiple sub-layers is relatively complex.

[0147] In the present application, the light leakage ratio can also be reduced by setting a hollow area in the connection part, please refer to Figure 19 and Figure 20 , Figure 19 is a partial top view of a second electrode layer in another display panel provided by the embodiments of the present application, Figure 20 is Figure 19A cross-sectional view of the display panel is provided at A6-A6. The plurality of main body portions 151 are arranged in a plurality of columns along a first direction X and in a plurality of rows along a second direction Y. For example, the first direction X can be perpendicular to the second direction Y.

[0148] The connecting portion 152 has a plurality of hollowed-out regions Q1 distributed between two adjacent main body portions 151 along the first direction X and between two adjacent main body portions 151 along the second direction Y. Here, ambient light can be transmitted from the hollowed-out regions Q1, which can further increase the transmittance of the connecting portion 152, thereby increasing the amount of ambient light and reducing the light leakage ratio.

[0149] It should be noted that, please refer to Figure 15 and Figure 19 The plurality of hollowed-out regions Q1 can be arranged at the same positions as the plurality of second sub-connection electrodes 152b, that is, the thickness of the second sub-connection electrodes 152b is zero, which forms the hollowed-out regions Q1. The connecting portion 152 can have a plurality of strip-shaped structures Q2 except for the hollowed-out regions Q1, and the plurality of strip-shaped structures Q2 can be arranged at the same positions as the plurality of first sub-connection electrodes 152a, so as to ensure that the two adjacent main body portions 151 are connected together to achieve the effect of common cathode. For example, the width of the strip-shaped structure Q2 in the direction perpendicular to the extension direction can be greater than 3 microns, so as to facilitate manufacturing.

[0150] In Figure 15 In the embodiment, the thickness of the strip-shaped structure Q2 is less than the thickness of the main body portion 151, which can increase the transmittance of the strip-shaped structure Q2, thereby increasing the amount of ambient light and reducing the light leakage ratio. In addition, the connecting portion 152 can only have the hollowed-out regions Q1, and the thickness of the strip-shaped structure Q2 can be equal to the thickness of the main body portion 151, which can increase the transmittance while ensuring that the resistance difference of the second electrode layer 15 at different positions is small, thereby improving the stability of the second electrode layer 15 when transmitting electrical signals.

[0151] In the present application, various implementation manners can be used to manufacture the second electrode layer 15 with the hollowed-out regions Q1 to make the second electrode layer 15 have a higher transmittance. The following two embodiments are described as follows:

[0152] In the first implementation, the second electrode layer 15 can be manufactured by a patterning process. For example, after forming the second electrode layer 15, a photoresist can be coated on the surface of the second electrode layer 15, and the photoresist can be exposed and developed by using a half-tone mask. Since the half-tone mask includes multiple areas with different light transmittances, the half-tone mask can control the degree of light transmission to achieve different degrees of exposure of the multiple areas of the photoresist, so as to adjust the etching depth of different areas, and thus the thickness of the connecting part 152 can be less than the thickness of the main part 151, and the hollow area Q1 can be formed.

[0153] In the second implementation, the second electrode layer 15 can be manufactured by a cathode selection block. Please refer to Figure 21 and Figure 22 , Figure 21 is another structural schematic diagram of a display panel provided by the embodiment of the present application (for clearly showing the relative position relationship between the cathode selection block and the second electrode layer, Figure 21 The touch electrode layer is not shown, but the embodiment of the present application is not limited thereto, Figure 22 is Figure 21 a cross-sectional schematic diagram of the display panel at A7-A7. The display panel 10 further includes multiple cathode selection blocks Q3 corresponding to the multiple hollow areas Q1, and the cathode selection block Q3 is located in the corresponding hollow area Q1. Here, the material of the cathode selection block Q3 and the material of the second electrode layer 15 are mutually exclusive, so the embodiment of the present application can first form the cathode selection block Q3 at the positions corresponding to the multiple hollow areas Q1, and then the material of the second electrode layer 15 is difficult to adhere to the positions corresponding to the multiple hollow areas Q1, so the second electrode layer 15 in the hollow area Q1 can be removed.

[0154] Here, the light transmittance of the cathode selection block Q3 is greater than the light transmittance of the second electrode layer 15. In this way, the transmittance of ambient light in the hollow area Q1 is also high, so as to increase the amount of ambient light, and thus the light leakage ratio can be reduced. Moreover, by setting the cathode selection block Q3, the manufacturing difficulty of the second electrode layer 15 can be reduced.

[0155] It should be noted that, Figures 12 to 22 The embodiment shown is the case of combining the scheme of the light shielding layer 17 with the scheme of thinning the second electrode layer 15, but the embodiment of the present application can also only use the scheme of thinning the second electrode layer 15 to reduce the light leakage ratio, and the embodiment of the present application will not be described in detail here.

[0156] In summary, the display panel provided by the embodiments of the present application is provided with a light shielding layer on the side of the pixel definition layer facing the substrate, so that part of the light emitted by the light emitting layer in the direction away from the light emitting side can be shielded by the light shielding layer, thereby reducing the light leakage of the display panel. In addition, the orthographic projection of the light shielding layer on the substrate overlaps with the orthographic projection of the touch electrode layer on the substrate, that is, the structure of the light shielding layer is similar to that of the touch electrode layer, so that the amount of blocking of ambient light can be reduced, thereby reducing the light leakage ratio, and further improving the brightness adjustment effect of the display device using the display panel.

[0157] On the other hand, the embodiments of the present application also provide a display device, which comprises a power supply component and the display panel provided by any of the above embodiments, and the power supply component can supply power to the display panel. The display device can further comprise a light sensing device, which can be located on the side of the display panel away from the light emitting side, and the light sensing device can be used to receive ambient light to adjust the brightness of the display panel and the like according to the received light. The display device can be any product or component with display function, for example, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.

[0158] Since the display device comprises the display panel provided by the above embodiments, the display device can also have similar effects, that is, the light leakage ratio can be low, and the brightness adjustment effect of the display device is good.

[0159] In the present application, the term "and / or" is only used to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this paper generally represents an "or" relationship between the front and rear associated objects.

[0160] It should be noted that in the drawings, the sizes of the layers and regions can be exaggerated for clarity. Moreover, it can be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or layer, or one or more intervening layers can also be present. In addition, it can be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element or layer, or one or more intervening layers or elements can also be present. In addition, it can also be understood that when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or one or more intervening layers or elements can also be present. Similar reference numerals refer to similar elements throughout.

[0161] In the present application, the terms "first", "second", "third" and "fourth" are only used for descriptive purposes and are not to be construed as indicating or implying relative importance. The term "a plurality" refers to two or more, unless otherwise expressly specified.

[0162] The above description is only optional embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A display panel, characterized by, The display panel comprises a substrate, a first electrode layer, a pixel definition layer, a light-emitting layer, a second electrode layer, a touch electrode layer and a light-shielding layer; The first electrode layer, the pixel definition layer, the light-emitting layer and the second electrode layer are arranged in a direction away from the substrate and on one side of the substrate, the pixel definition layer has a plurality of pixel openings, and at least part of the light-emitting layer is located in the plurality of pixel openings; The touch electrode layer is located on a side of the second electrode layer away from the substrate; The light-shielding layer is located on a side of the pixel definition layer facing the substrate, the orthographic projection of the light-shielding layer on the substrate and the orthographic projection of the touch electrode layer on the substrate overlap, the light-shielding layer has a plurality of first grid holes, the plurality of first grid holes correspond to the plurality of pixel openings, and the orthographic projection of the first grid hole on the substrate and the orthographic projection of the corresponding pixel opening on the substrate overlap.

2. The display panel of claim 1, wherein, The orthographic projection of the light-shielding layer on the substrate is located in the orthographic projection of the touch electrode layer on the substrate.

3. The display panel of claim 1, wherein, The touch electrode layer has a plurality of second grid holes, the plurality of second grid holes correspond to the plurality of first grid holes, and the orthographic projection of the second grid hole on the substrate is located in the orthographic projection of the corresponding first grid hole on the substrate.

4. The display panel of claim 3, wherein, The touch electrode layer comprises a plurality of first touch lines and a plurality of second touch lines, the extension direction of the first touch line intersects the extension direction of the second touch line, and the plurality of first touch lines and the plurality of second touch lines are used to enclose the plurality of second grid holes; The light-shielding layer comprises a plurality of first light-shielding strips and a plurality of second light-shielding strips, the extension direction of the first light-shielding strip is parallel to the extension direction of the first touch line, the extension direction of the second light-shielding strip is parallel to the extension direction of the second touch line, and the plurality of first light-shielding strips and the plurality of second light-shielding strips are used to enclose the plurality of first grid holes; The width of the first light-shielding strip is less than or equal to the width of the first touch line, and / or the width of the second light-shielding strip is less than or equal to the width of the second touch line.

5. The display panel of claim 4, wherein, The light-shielding layer has a plurality of first partition openings, the touch electrode layer has a plurality of second partition openings, at least part of the first partition openings in the plurality of first partition openings correspond to the plurality of second partition openings, and the orthographic projection of the second partition opening on the substrate at least partially coincides with the orthographic projection of the corresponding first partition opening on the substrate.

6. The display panel of claim 5, wherein, The light-shielding layer is arranged in the same layer as the first electrode layer and has the same material.

7. The display panel of claim 6, wherein, The first electrode layer comprises a plurality of first electrode blocks, the light-shielding layer is divided into a plurality of light-shielding parts by the first partition openings, the light-shielding part has a first strip and a second strip connected thereto, the first strip is part of the first light-shielding strip between two adjacent first partition openings, and the second strip is part of the second light-shielding strip between two adjacent first partition openings; The plurality of light-shielding parts correspond to the plurality of first electrode blocks, and the light-shielding part is connected to the corresponding first electrode block.

8. The display panel of claim 6, wherein, The light shielding layer is arranged separately from the first electrode layer, and the display panel further comprises a first power supply trace electrically connected with the light shielding layer.

9. The display panel of claim 5, wherein, A part of the light shielding layer in the orthographic projection of the substrate overlaps with the orthographic projection of the first electrode layer on the substrate, and another part does not overlap with the orthographic projection of the first electrode layer on the substrate.

10. The display panel of claim 9, wherein, The display panel further comprises a planar layer located on a side of the first electrode layer facing the substrate. Part of the light shielding layer is located between the first electrode layer and the pixel definition layer, and another part is located between the planar layer and the pixel definition layer.

11. The display panel of claim 9, wherein, The pixel definition layer has light transmittance, and the light shielding layer has light absorption.

12. The display panel of any of claims 1-11, wherein, The display panel further comprises a first light adjusting layer and a second light adjusting layer. The first light adjusting layer is located on a side of the second electrode layer facing away from the substrate, the first light adjusting layer has a plurality of light adjusting holes corresponding to the plurality of pixel openings, the orthographic projection of the light adjusting hole on the substrate overlaps with the orthographic projection of the corresponding pixel opening on the substrate, and the side of the first light adjusting layer facing away from the substrate has a groove located between two adjacent light adjusting holes. The second light adjusting layer is located on a side of the first light adjusting layer facing away from the substrate, at least part of the second light adjusting layer is located in the plurality of light adjusting holes and the groove, and the part of the second light adjusting layer located in the light adjusting hole is in contact with the inner wall of the light adjusting hole, and the part of the second light adjusting layer located in the groove is in contact with the groove surface. The refractive index of the second light adjusting layer is greater than the refractive index of the first light adjusting layer.

13. The display panel of claim 12, wherein, The groove bottom has a plurality of recessed microstructures.

14. The display panel of claim 12, wherein, The display panel further comprises an encapsulation layer, in a direction perpendicular to the substrate, the encapsulation layer is located between the touch electrode layer and the second electrode layer, and the first light adjusting layer is located on a side of the touch electrode layer facing away from the encapsulation layer.

15. The display panel of any of claims 1-11, wherein, The second electrode layer comprises a plurality of main body parts corresponding to the plurality of pixel openings, and a connecting part connected with the plurality of main body parts, the orthographic projection of the main body part on the substrate overlaps with the orthographic projection of the corresponding pixel opening on the substrate. In a direction perpendicular to the substrate, the thickness of the connecting part is less than or equal to the thickness of the main body part.

16. The display panel of claim 15, wherein, The plurality of main body parts are arranged as multiple columns in a first direction and as multiple rows in a second direction. The connecting part has a plurality of hollowed-out areas, the plurality of hollowed-out areas are distributed between two adjacent main body parts in the first direction and between two adjacent main body parts in the second direction.

17. The display panel of claim 16, wherein, The display panel further comprises a plurality of cathode selection blocks corresponding to the plurality of hollowed-out areas, and the cathode selection block is located in the corresponding hollowed-out area. The light transmittance of the cathode selection block is greater than the light transmittance of the second electrode layer.

18. The display panel of claim 15, wherein, The plurality of main body parts are arranged as multiple columns in a first direction and as multiple rows in a second direction. The connecting portion comprises a plurality of first sub connecting electrodes and a plurality of second sub connecting electrodes; the first sub connecting electrodes are connected with two adjacent body portions; the second sub connecting electrodes are distributed between two adjacent body portions in the first direction and between two adjacent body portions in the second direction; Wherein, in the direction perpendicular to the substrate, the thickness of the first sub connecting electrode is less than or equal to the thickness of the body portion, and the thickness of the second sub connecting electrode is less than or equal to the thickness of the first sub connecting electrode.

19. The display panel of claim 18, wherein, The second electrode layer comprises a first sub layer and a second sub layer stacked in the direction away from the substrate; Wherein, in the case that the thickness of the first sub connecting electrode is less than the thickness of the body portion, and the thickness of the second sub connecting electrode is equal to the thickness of the first sub connecting electrode, a part of the first sub layer and the second sub layer are used to constitute the body portion, and another part of the first sub layer is used to constitute the first sub connecting electrode and the second sub connecting electrode; Or, in the case that the thickness of the first sub connecting electrode is equal to the thickness of the body portion, and the thickness of the second sub connecting electrode is less than the thickness of the first sub connecting electrode, a part of the first sub layer and the second sub layer are used to constitute the body portion and the first sub connecting electrode, and another part of the first sub layer is used to constitute the second sub connecting electrode.

20. A display device comprising: Comprise: A power supply assembly, and a display panel electrically connected with the power supply assembly, the display panel comprising: the display panel of any one of claims 1 to 19.

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