Display panel and display device

Abstract

The application 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 light shielding layer. The light shielding layer is located 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. 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 improving the brightness adjustment effect of the display device using the display panel.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display panel and display device. Background Technology

[0002] A display panel is a device used to display images and text.

[0003] Currently, display panels have a light sensor on the side away from the light-emitting side. This light sensor can receive ambient light to adjust brightness and perform other functions based on the received light. During the light emission process of the display panel, some light is reflected or diffracted and emitted in the direction away from the light-emitting side. Therefore, the light sensor will also receive this portion of the light leakage from the display panel.

[0004] However, the more light leakage the display panel has, the less accurate the light sensor will be in recognizing ambient light, resulting in poor brightness adjustment. Summary of the Invention

[0005] This application provides an embodiment of the technical solution, which is as follows:

[0006] According to one aspect of this application, a display panel is provided, the display panel 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 in a direction away from the substrate. The pixel definition layer has a plurality of pixel openings, and at least a portion of the light-emitting layer is located within the plurality of pixel openings.

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

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

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

[0011] Optionally, the touch electrode layer has a plurality of second mesh holes, which correspond to the plurality of first mesh holes, and the orthographic projection of the second mesh hole on the substrate is located within the orthographic 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, wherein the extension direction of the first touch lines intersects the extension direction of the second touch lines, and the plurality of first touch lines and the plurality of second touch lines are used to form the plurality of second mesh holes;

[0013] The light-shielding layer includes: multiple first light-shielding strips and multiple second light-shielding strips, wherein the extension direction of the first light-shielding strips is parallel to the extension direction of the first touch line, and the extension direction of the second light-shielding strips is parallel to the extension direction of the second touch line; the multiple first light-shielding strips and the multiple second light-shielding strips are used to form the multiple first mesh holes;

[0014] Wherein, 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 isolation openings, and the touch electrode layer has a plurality of second isolation openings. At least a portion of the plurality of first isolation openings corresponds to the plurality of second isolation openings, and the orthographic projection of the second isolation opening on the substrate at least partially coincides with the orthographic projection of the corresponding first isolation opening on the substrate.

[0016] Optionally, the light-shielding layer is disposed in the same layer as the first electrode layer and is made of the same material.

[0017] Optionally, the first electrode layer includes: a plurality of first electrode blocks, the light-shielding layer being divided into a plurality of light-shielding portions by the first partition, each light-shielding portion having a first strip and a second strip connected to each other, the first strip being the portion of the first light-shielding strip located between two adjacent first partitions, and the second strip being the portion of the second light-shielding strip located between two adjacent first partitions.

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

[0019] Optionally, the light-shielding layer is disposed separately from the first electrode layer, and the display panel further includes: a first power supply line, which is electrically connected to the light-shielding layer.

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

[0021] Optionally, the display panel further includes a planarization layer located on the side of the first electrode layer facing the substrate;

[0022] A portion of the light-shielding layer is located between the first electrode layer and the pixel definition layer, and another portion is located between the planarization layer and the pixel definition layer.

[0023] Optionally, the pixel definition layer is transparent, and the light-shielding layer is light-absorbing.

[0024] Optionally, the display panel further includes: a first dimming layer and a second dimming layer;

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

[0026] The second dimming layer is located on the side of the first dimming layer away from the substrate. At least a portion of the second dimming layer is located in the plurality of dimming holes and the groove. The portion of the second dimming layer located in the dimming hole contacts the inner wall of the dimming hole, and the portion of the second dimming layer located in the groove contacts the groove surface of the groove.

[0027] The refractive index of the second dimming layer is greater than that of the first dimming layer.

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

[0029] Optionally, the display panel further includes: an encapsulation layer, which is located between the touch electrode layer and the second electrode layer in a direction perpendicular to the substrate, and the first dimming layer is located on the side of the touch electrode layer opposite to the encapsulation layer.

[0030] Optionally, the second electrode layer includes: a plurality of main body portions corresponding to a plurality of pixel openings, and a connecting portion connected to the plurality of main body portions, wherein the orthographic projection of the main body portion on the substrate overlaps with the orthographic projection of the corresponding pixel opening on the substrate;

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

[0032] Optionally, the plurality of main body parts are arranged in multiple columns along the first direction and in multiple rows along the second direction;

[0033] The connecting portion has multiple hollow areas, which are distributed between two adjacent main body portions in the first direction and between two adjacent main body portions in the second direction.

[0034] Optionally, the display panel further includes: a plurality of cathode selection blocks, the plurality of cathode selection blocks corresponding to the plurality of cutout areas, and the cathode selection blocks being located within the corresponding cutout areas;

[0035] The transmittance of the cathode selective block is greater than that of the second electrode layer.

[0036] Optionally, the plurality of main body parts are arranged in multiple columns along the first direction and in multiple rows along the second direction;

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

[0038] 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 main body, and the thickness of the second sub-connecting electrode is less than or equal to the thickness of the first sub-connecting electrode.

[0039] Optionally, the second electrode layer includes: a first sublayer and a second sublayer stacked in a direction away from the substrate;

[0040] Wherein, when the thickness of the first sub-connecting electrode is less than the thickness of the main body and the thickness of the second sub-connecting electrode is equal to the thickness of the first sub-connecting electrode, a portion of the first sub-layer and the second sub-layer are used to form the main body, and another portion of the first sub-layer is used to form the first sub-connecting electrode and the second sub-connecting electrode.

[0041] Alternatively, when the thickness of the first sub-connecting electrode is equal to the thickness of the main body and the thickness of the second sub-connecting electrode is less than the thickness of the first sub-connecting electrode, a portion of the first sub-layer and the second sub-layer are used to form the main body and the first sub-connecting electrode, and another portion of the first sub-layer is used to form the second sub-connecting electrode.

[0042] On the other hand, a display device is provided, comprising: a power supply component, and a display panel electrically connected to the power supply component, the display panel comprising: any of the above-described display panels.

[0043] The beneficial effects of the technical solutions provided in this application include at least the following:

[0044] A light-shielding layer is incorporated into the display panel, located on the side of the pixel definition layer facing the substrate. Therefore, some of the light emitted from the light-emitting layer that is directed away from the light-emitting side can be blocked by the light-shielding layer, thereby reducing light leakage from the display panel. Furthermore, the orthographic projection of the light-shielding layer onto the substrate overlaps with the orthographic projection of the touch electrode layer onto the substrate; that is, the structures of the light-shielding layer and the touch electrode layer are similar. This reduces the amount of ambient light blocked, thereby lowering the light leakage ratio and improving the brightness adjustment performance of display devices using this display panel. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is a schematic diagram of the structure of a display device provided by related technologies;

[0047] Figure 2 This is a partial top view of a display panel provided in an embodiment of this application;

[0048] Figure 3 yes Figure 2 A schematic cross-sectional view of the provided display panel at point A1-A1;

[0049] Figure 4 yes Figure 2 A partial top view of a light-shielding layer in a provided display panel;

[0050] Figure 5 This is a partial top view of a portion of the structure in another display panel provided in this application embodiment;

[0051] Figure 6 yes Figure 5 A schematic cross-sectional view of the provided display panel at point A2-A2;

[0052] Figure 7 This is a schematic diagram of another display panel structure provided in an embodiment of this application;

[0053] Figure 8 This is a partial top view of a portion of the structure in another display panel provided in this application embodiment;

[0054] Figure 9 yes Figure 8 A cross-sectional schematic diagram of the provided display panel at point A3-A3;

[0055] Figure 10 This is a schematic diagram of another display panel structure provided in an embodiment of this application;

[0056] Figure 11 This is a schematic diagram of another display panel structure provided in an embodiment of this application;

[0057] Figure 12 This is a partial top view of the second electrode layer in another display panel provided in this application embodiment;

[0058] Figure 13 yes Figure 12 A cross-sectional schematic diagram of the provided display panel at A4-A4;

[0059] Figure 14 yes Figure 12 Another cross-sectional view of the provided display panel at A4-A4;

[0060] Figure 15 This is a partial top view of the second electrode layer in another display panel provided in this application embodiment;

[0061] Figure 16 yes Figure 15 A schematic cross-sectional view of the provided display panel at A5-A5;

[0062] Figure 17 yes Figure 15 Another cross-sectional view of the provided display panel at A5-A5;

[0063] Figure 18 yes Figure 15 Another cross-sectional view of the provided display panel at A5-A5;

[0064] Figure 19 This is a partial top view of the second electrode layer in another display panel provided in this application embodiment;

[0065] Figure 20 yes Figure 19 A cross-sectional schematic diagram of the provided display panel at A6-A6;

[0066] Figure 21 This is a schematic diagram of another display panel structure provided in an embodiment of this application;

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

[0068] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0069] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0070] Please refer to Figure 1 , Figure 1 This is a schematic diagram of a display device provided by related technology. The display device 20 includes a display panel 10 and a light sensor 21. The light sensor 21 is located on a second side M2 ​​of the display panel 10 away from the light-emitting side M1. The display panel 10 emits light to achieve the display function, and the light sensor 21 receives ambient light to achieve functions such as adjusting brightness. The light received by the light sensor 21 includes not only the ambient light L1 passing through the display panel 10, but also the light leakage L2 emitted from the display panel 10 toward the second side M2. This light leakage L2 is caused by the reflection or diffraction of light emitted from the light-emitting layer in the display panel 10 due to metal film layers or other film layers.

[0071] When the display panel 10 displays a white image with a brightness of 70 nits under illumination from a light-emitting diode (LED) light source with an illuminance of 30 lux and a color temperature of 4500 Kelvin, the ratio of the light leakage L2 received by the light sensor 21 to the ambient light L1 passing through the display panel 10 is called the light leakage ratio. A smaller light leakage ratio means that the light sensor 21 is more sensitive to ambient light, and thus has better accuracy in recognizing ambient light. However, the display device 10 provided by the related technology has a large light leakage ratio, resulting in poor accuracy of ambient light recognition by the light sensor 21, and consequently, poor brightness adjustment.

[0072] This application provides a display panel, please refer to... Figure 2 , Figure 3 and Figure 4 , Figure 2 This is a partial top view of a display panel provided in an embodiment of this application (to clearly illustrate the relative positional relationship between the first electrode layer and the touch electrode layer). Figure 2 The pixel definition layer, light-emitting layer, and second electrode layer are not shown, but this application embodiment does not limit this. Figure 3 yes Figure 2A cross-sectional schematic diagram of the provided display panel at point A1-A1. Figure 4 yes Figure 2 A partial top view of a light-shielding layer in a provided display panel. 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 in this application embodiment can be an organic light-emitting diode (OLED) display panel. OLED display panels have many advantages such as self-illumination, low driving voltage, high luminous efficiency, short response time, high clarity and contrast, wide operating temperature range, and the ability to achieve flexible display and large-area full-color display.

[0074] The substrate 11 can be used to support 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] A first electrode layer 12, a pixel definition layer 13, a light-emitting layer 14, and a 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 a portion of the light-emitting layer 14 is located within 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. A light-emitting device may include a first electrode block, a light-emitting block, and a main body portion stacked together. The first electrode block is a part of the first electrode layer 12, the light-emitting block is a part of the light-emitting layer 14, and the main body portion is a 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 work together 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 facing away from the substrate 11. Here, the touch electrode layer 16 can be a grid-like metal electrode layer. For example, the touch electrode layer 16 has a plurality of second grid holes K2 corresponding one-to-one with a plurality of pixel openings K3, 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 coincide 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 an opaque 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 through the corresponding second grid hole K2 in the touch electrode layer 16, thereby ensuring that the display panel 10 can display the image normally.

[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. The light-shielding layer 17 has a plurality of first grid holes K1, which correspond to a plurality of pixel openings K3. The orthographic projection of the first grid holes K1 on the substrate 11 overlaps with the orthographic projection of the corresponding pixel openings K3 on the substrate 11.

[0079] Here, the light-shielding layer 17 is disposed between the pixel definition layer 13 and the substrate 11. When light leakage from the display panel 10 enters the area of ​​the pixel opening K3, it can be blocked by the first electrode layer 12. In areas where light leakage from the display panel 10 enters other than the pixel opening K3, the light-shielding layer 17 can block at least a portion of it, thereby reducing the risk of light leakage being received by the photosensitive device 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 mesh-like film layer. In this way, 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 this display panel.

[0080] It should be noted that, Figure 4 The pattern of the light-shielding layer 17 is shown only as an example, but the embodiments of this application are not limited thereto.

[0081] In summary, this application provides a display panel with a light-shielding layer located on the side of the pixel definition layer facing the substrate. Therefore, some of the light emitted from the light-emitting layer that is emitted in a direction away from the light-emitting side can be blocked by the light-shielding layer, thereby reducing light leakage from the display panel. Furthermore, the orthographic projection of the light-shielding layer onto the substrate overlaps with the orthographic projection of the touch electrode layer onto the substrate; that is, the structures of the light-shielding layer and the touch electrode layer are similar. This reduces the amount of ambient light blocked, thereby reducing the light leakage ratio and improving the brightness adjustment effect of the display device using this display panel.

[0082] In this application, the light leakage ratio is related to both the amount of light leakage and the amount of ambient light passing through the display panel 000. That is, to reduce the light leakage ratio, a balance needs to be struck between increasing the blocking of light leakage and reducing the blocking of ambient light. Specifically, the blocking of ambient light by the light-shielding layer 17 can be reduced by adjusting its structure. The structure of the light-shielding layer 17 is described below:

[0083] Optionally, the orthographic projection of the light-shielding layer 17 onto the substrate 11 lies within the orthographic projection of the touch electrode layer 16 onto the substrate 11. In this way, when ambient light shines on the display panel, a portion is blocked by the touch electrode layer 16, while the remaining ambient light can be transmitted through the corresponding second mesh hole K2 in the touch electrode layer 16. When this portion of ambient light reaches the light-shielding layer 17, it can also be transmitted through the first mesh hole K1. This prevents the light-shielding layer 17 from affecting the amount of ambient light transmitted, thereby reducing light leakage while ensuring that the amount of ambient light transmitted remains essentially unchanged, effectively reducing the light leakage ratio.

[0084] Optionally, the touch electrode layer 16 has a plurality of second mesh holes K2, which correspond to a plurality of first mesh holes K1. The orthographic projection of the second mesh hole K2 on the substrate 11 lies within the orthographic projection of the corresponding first mesh hole K1 on the substrate 11. In this way, not only can the structure of the first mesh hole K1 in the light-shielding layer 17 be similar to the structure of the second mesh hole K2 in the touch electrode layer 16, but the size of the first mesh hole K1 in the light-shielding layer 17 can also be larger than or the same as the size of the second mesh hole K2 in the touch electrode layer 16. This ensures that ambient light transmitted from the second mesh hole K2 can be transmitted through the first mesh hole K1, thereby preventing the light-shielding layer 17 from affecting the amount of ambient light transmitted.

[0085] Optionally, the touch electrode layer 16 includes: a plurality of first touch lines 161 and a plurality of second touch lines 162, wherein the extension direction of the first touch lines 161 intersects the extension direction of the second touch lines 162, and the plurality of first touch lines 161 and the plurality of second touch lines 162 are used to form a plurality of second mesh holes K2.

[0086] The light-shielding layer 17 includes multiple first light-shielding strips 171 and multiple 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 line 161, and the extension direction of the second light-shielding strips 172 is parallel to the extension direction of the second touch line 162. The multiple first light-shielding strips 171 and multiple second light-shielding strips 172 are used to form multiple first mesh holes K1. In this way, the structure of the first mesh holes K1 in the light-shielding layer 17 can be made to have a high degree of similarity to the structure of the second mesh holes K2 in the touch electrode layer 16.

[0087] Wherein, the width of the first light-shielding strip 171 is less than or equal to the width of the first touch line 161, and / or, the width of the second light-shielding strip 172 is less than or equal to the width of the second touch line 162.

[0088] When the width of the first light-shielding strip 171 is equal to the width of the first touch line 161, and the width of the second light-shielding strip 172 is equal to the width of the second touch line 162, the light-shielding layer 17 can maximize the light-blocking effect of light leakage without blocking ambient light. When the width of the first light-shielding strip 171 is less than the width of the first touch line 161, and the width of the second light-shielding strip 172 is less than the width of the second touch line 162, it can also be ensured that the light-shielding layer 17 will not block ambient light, and the tolerance for manufacturing errors can be increased. Therefore, by setting the widths of the first light-shielding strip 171 and the second light-shielding strip 172, the multiple second grid holes K2 formed by the first light-shielding strip 171 and the second light-shielding strip 172 can prevent ambient light passing through the touch electrode layer 16 from being blocked, and only block the light leakage from the display panel, thereby effectively reducing the light-shielding ratio.

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

[0090] It should be noted that the orthographic projection of the second partition G2 on the substrate 11 at least partially overlaps with the orthographic projection of the corresponding first partition G1 on the substrate 11, including two cases. One case is "partial overlap," which ensures that the second partition G2 and the corresponding first partition G1 are positioned similarly, thus avoiding blocking ambient light. The other case is "complete overlap," which maximizes the blocking effect of the light-shielding layer 17 on light leakage while avoiding blocking ambient light. However, due to manufacturing errors in actual processes, the embodiments of this application do not strictly require "complete overlap."

[0091] The touch electrode layer 16 may include touch driving electrodes and touch sensing electrodes. Through the cooperation of the touch driving electrodes and touch sensing electrodes, the capacitance change of the area touched by the user on the display panel 000 can be detected, and the position of the touch area can be located based on the capacitance change, thereby realizing the touch function. Both the touch driving electrodes and touch sensing electrodes include a portion of the first touch line 161 and a portion of the second touch line 162. To ensure that there is no short circuit between adjacent touch driving electrodes and touch sensing electrodes, multiple second isolation ports G2 can be provided on both the first touch line 161 and the second touch line 162. This allows adjacent touch driving electrodes and touch sensing electrodes to be disconnected through the second isolation ports G2. The location of the second isolation ports G2 can be determined according to the shape and structure of the touch driving electrodes and touch sensing electrodes. Figure 2 The illustration only shows one example of the configuration of the second partition G2, and the embodiments of this application are not intended to limit this.

[0092] The multiple first partitions G1 of the light-shielding layer 17 can be used to improve the structural similarity between the light-shielding layer 17 and the touch electrode layer 16. Since the multiple first partitions G1 of the light-shielding layer 17 do not block light, setting the first partitions G1 can prevent the light-shielding layer 17 from blocking ambient light, and the number and position of the first partitions G1 will affect the amount of ambient light passing through the display panel 000.

[0093] When multiple first partition openings G1 can correspond one-to-one with multiple second partition openings G2, the number and location of the multiple first partition openings G1 and the multiple second partition openings G2 can be the same. This can maximize the degree of light blocking by the light-shielding layer 17 while avoiding blocking ambient light.

[0094] When only a portion of the multiple first partition openings G1 correspond to multiple second partition openings G2, the number of first partition openings G1 is greater than the number of multiple second partition openings G2. This also ensures that the light-shielding layer 17 does not block ambient light after passing through the touch electrode layer 16, but the degree of light leakage blocking by the light-shielding layer 17 is less than in the first case.

[0095] In this application embodiment, the position of the light-shielding layer 17 includes various cases, which are described below with two exemplary embodiments:

[0096] In a first exemplary embodiment, please refer to Figure 5 and Figure 6 , Figure 5 This is a partial top view of a portion of the structure in another display panel provided in this application embodiment. Figure 6 yes Figure 5 A schematic cross-sectional view of the provided display panel at point A2-A2 is shown. The light-shielding layer 17 is disposed on the same layer as the first electrode layer 12 and made of the same material. This allows for the simultaneous fabrication of both the first electrode layer 12 and the light-shielding layer 17 in a single patterning process, simplifying the manufacturing process and without increasing the overall thickness of the display panel. In this embodiment, the patterning process may include photoresist coating, exposure, development, etching, and photoresist stripping.

[0097] For example, if the material of the first electrode layer 12 is a metal material with high light reflectivity, then 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 from the display panel, thereby preventing the light leakage from being received by the photosensitive device. Furthermore, 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 holes K1 on the substrate 11 overlaps with the orthographic projection of the corresponding pixel openings K3 on the substrate 11. Therefore, the light-shielding layer 17 can be disposed in the gap area of ​​the first electrode layer 12.

[0098] In addition, this application embodiment also performs light leakage ratio simulation on the display panel provided in this application embodiment and the display panel provided by related technologies. The light leakage ratio simulation results are shown in Table 1. Table 1 is a comparison table of light leakage, ambient light, and light leakage ratio of the display panel provided in this application embodiment and the display panel provided by related technologies. The structure of the display panel provided in this application embodiment corresponding to Table 1 can be referred to... Figure 5 and Figure 6 The display panels provided in the related technologies corresponding to Table 1 do not have a light-shielding layer. As can be seen from the light leakage ratio simulation results in Table 1, the embodiments of this application can effectively reduce light leakage by setting a light-shielding layer, and the light-shielding layer has little impact on ambient light, thus effectively reducing the light leakage ratio of the display panel provided in these applications. Compared to the display panels provided in related technologies, the light leakage ratio of the display panel provided in these applications is reduced by approximately 21.5%. This improves the brightness adjustment effect of the display device using this display panel.

[0099] Table 1

[0100]

[0101] In this 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 may belong to different light-emitting devices. For example, the first electrode block 121 may have a protrusion T1, which can be conveniently electrically connected to the pixel driving circuit.

[0103] The light-shielding layer 17 is divided into multiple light-shielding sections 173 by a first partition G1. Each light-shielding section 173 has a first strip 171a and a second strip 172a connected to each other. The first strip 171a is the portion of the first light-shielding strip 171 located between two adjacent first partitions G1, and the second strip 172a is the portion of the second light-shielding strip 172 located between two adjacent first partitions G1. Thus, each light-shielding section 173 is disconnected from the others, that is, each light-shielding section 173 is separately arranged. For example, the shape of the light-shielding section 173 composed of the first strip 171a and the second strip 172a can be a cross shape.

[0104] In this configuration, multiple light-shielding portions 173 correspond to multiple first electrode blocks 121, and the light-shielding portions 173 are connected to their respective first electrode blocks 121. Since both the material of the light-shielding layer 17 and the material of the first electrode layer 12 are conductive, when the light-shielding portions 173 are connected to their respective first electrode blocks 121, the first partition G1 separates each light-shielding portion 173, ensuring that each first electrode block 121 is also separated from the others. This prevents short circuits between adjacent first electrode blocks 121 and ensures that each light-emitting device can be controlled individually. For example, if the orthographic projection of the protrusion T1 on the substrate 11 overlaps with the orthographic projection of the touch electrode layer 16 on the substrate 11, the light-shielding portion 173 can connect to the first electrode block 121 at the protrusion T1.

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

[0106] In the second case, please refer to Figure 7 , Figure 7This is a schematic diagram of another display panel structure provided in this application embodiment. The light-shielding layer 17 is separately disposed 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 also includes a first power line 111, which is electrically connected to the light-shielding layer 17. In the direction perpendicular to the substrate 11, the first power line 111 can be located between the substrate 11 and the first electrode layer 12. In this case, a first power signal (VDD) can be connected to the light-shielding layer 17 through the first power line 111, which also avoids the light-shielding layer 17 being in a floating state, thereby reducing the risk of electrostatic breakdown. The first power line 111 can be distributed in the peripheral area of ​​the display panel, so the connection position between the light-shielding layer 17 and the first power line 111 can also be in the peripheral area.

[0107] In this application, the light-shielding layer 17 can also access other signals. For example, the display panel 10 further includes: a plurality of pixel driving circuits. The plurality of pixel driving circuits can be located on the 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 that connects the light-emitting device, the light-emitting control transistor and the reset control transistor. The light-shielding layer 17 can be electrically connected to the fourth node to access the fourth node signal (N4).

[0108] In the second exemplary embodiment, please refer to Figure 8 and Figure 9 , Figure 8 This is a partial top view of a portion of the structure in another display panel provided in this application embodiment. Figure 9 yes Figure 8 A schematic cross-sectional view of the provided display panel at A3-A3. The light-shielding layer 17 and the first electrode layer 12 can also be formed using 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 portion of the orthographic projection of the light-shielding layer 17 onto the substrate 11 overlaps with the orthographic projection of the first electrode layer 12 onto the substrate 11, while another portion does not coincide with the orthographic projection of the first electrode layer 12 onto the substrate 11. This is because a portion of the orthographic projection of the touch electrode layer 16 onto the substrate 11 also overlaps with the orthographic projection of the first electrode layer 12 onto the substrate 11, and the overlapping position of these orthographic projections is outside the pixel opening K3, thus not affecting the light emission of the light-emitting layer 14.

[0110] Optionally, the display panel 10 further includes a planarization layer 112, which is located on the side of the first electrode layer 12 facing the substrate 11. In this application, a driving circuit is disposed on the substrate 11, and the driving circuit includes a plurality of thin-film transistors 113. The planarization layer 112 can cover the driving circuit to improve flatness and provide a flat surface for the first electrode layer 12. Furthermore, the planarization layer 112 can act as an insulator between the driving circuit and the first electrode layer 12 to prevent short circuits.

[0111] In this configuration, a portion of the light-shielding layer 17 is located between the first electrode layer 12 and the pixel definition layer 13, while another portion is located between the planarization layer 112 and the pixel definition layer 13. Specifically, at locations where the orthographic projections of the light-shielding layer 17 and the first electrode layer 12 overlap, a portion of the light-shielding layer 17 is located between the first electrode layer 12 and the pixel definition layer 13. For example, at the location corresponding to the protrusion 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 locations where the orthographic projections of the light-shielding layer 17 and the first electrode layer 12 do not overlap, a portion of the light-shielding layer 17 is located between the planarization layer 112 and the pixel definition layer 13.

[0112] Optionally, if the pixel definition layer 13 is transparent, ambient light can pass through it. If the light-shielding layer 17 is light-absorbing, it can absorb light leakage from the display panel, thereby preventing the leakage light from being received by the light-sensing device and reducing the light leakage ratio. For example, the material of the light-shielding layer 17 may include black polyimide.

[0113] It should be noted that this application is not limited to the location of the light-shielding layer 17 shown in the two exemplary embodiments above. For example, the light-shielding layer 17 may also be formed before the first electrode layer 12, that is, in the direction perpendicular to the substrate 11, the light-shielding layer 17 may be located between the planarization layer 112 and the substrate 11.

[0114] In this application embodiment, the light leakage ratio can also be reduced by increasing the amount of ambient light passing through the display panel. Two exemplary embodiments are described below:

[0115] In a first exemplary embodiment, the amount of ambient light passing through the display panel can be increased by providing a first dimming layer and a second dimming layer. Please refer to... Figure 10 , Figure 10 This is a schematic diagram of another display panel structure provided in an embodiment of this application. The display panel 10 further includes: a first dimming layer 181 and a second dimming layer 182.

[0116] The first dimming layer 181 is located on the side of the second electrode layer 15 away from the substrate 11. The first dimming layer 181 has a plurality of dimming holes K4, which correspond to a plurality of pixel openings K3. The orthographic projection of the dimming 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 dimming layer 181 away from the substrate 11 has a groove B1 located between two adjacent dimming holes K4.

[0117] The second dimming layer 182 is located on the side of the first dimming layer 181 away from the substrate 11. At least a portion of the second dimming layer 182 is located in a plurality of dimming holes K4 and a groove B1. The portion of the second dimming layer 182 located in the dimming hole K4 is in contact with the inner wall of the dimming hole K4, and the portion of the second dimming 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 dimming layer 182 is greater than that of the first dimming layer 181. Due to the difference in refractive index between the first dimming layer 181 and the second dimming layer 182, the first dimming layer 181 and the second dimming layer 182 can work together to adjust the path of light.

[0119] On the one hand, the first dimming layer 181 and the second dimming layer 182 can adjust the path of ambient light. In the ambient light entering the display panel, some rays with larger angles (e.g., ray L3) may reach the inner wall of the groove B1 of the first dimming layer 181, that is, the interface between the first dimming layer 181 and the second dimming layer 182. Since the refractive index of the second dimming layer 182 is greater than that of the first dimming layer 181, ray L3 will be refracted at the inner wall of the groove B1. According to the law of refraction, the incident angle of ray L3 is smaller than the exit angle, that is, the exit direction of ray L3 can be deflected in a direction perpendicular to the substrate 11. Therefore, ray L3 will not be reflected by the first electrode layer 12, thereby increasing the amount of ambient light and further reducing the light leakage ratio.

[0120] On the other hand, the first dimming layer 181 and the second dimming layer 182 can adjust the path of the light emitted from the light-emitting layer 14. Among the light emitted from the light-emitting layer 14, some light rays with larger angles (e.g., light ray L4) may reach the inner wall of the dimming aperture K4, that is, the interface between the first dimming layer 181 and the second dimming layer 182. Since the refractive index of the second dimming layer 182 is greater than that of the first dimming layer 181, and the incident angle of light ray L4 is larger than the critical angle, light ray L4 will undergo total internal reflection at the inner wall of the groove B1. This can cause the large-angle light ray to be deflected towards the forward light emission direction, thereby increasing the forward light emission amount and reducing the amount of light leakage caused by emission or diffraction, and further reducing 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 a 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 dimming layer 181 is located on the side of the touch electrode layer 16 opposite to the encapsulation layer 19. In this way, the first dimming layer 181 can also protect the touch electrode layer 16, and the second dimming layer 182 can also provide a planarization function. Therefore, the second dimming layer 182 can be reused as a cover layer, thereby reducing the thickness of the display panel.

[0127] In addition, without considering the reduction of the display panel thickness, the first dimming layer 181 and the second dimming layer 182 can also be disposed between the touch electrode layer 16 and the encapsulation layer 19. This can also avoid the groove B1 being too 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 illustrated embodiment combines the light-shielding layer 17 with the first dimming layer 181 and the second dimming layer 182. However, the embodiments of this application may also use only the first dimming layer 181 and the second dimming layer 182 to reduce the light leakage ratio. The embodiments of this application will not be described in detail here.

[0129] In a second exemplary embodiment, the amount of ambient light passing through the display panel can be increased by adjusting the thickness of the second electrode layer. Please refer to... Figure 12 and Figure 13 , Figure 12 This is a partial top view of the second electrode layer in another display panel provided in this application embodiment. Figure 13 yes Figure 12 A cross-sectional schematic diagram of the provided display panel along line A4-A4 is shown. The second electrode layer 15 includes: a plurality of main body portions 151 corresponding to a plurality of pixel openings K3, and a connecting portion 152 connected to the plurality of main body portions 151. The orthographic projection of the main body portion 151 on the substrate 11 overlaps with the orthographic projection of the corresponding pixel opening K3 on the substrate 11. Here, the main body portion 151 can serve as the cathode of a light-emitting device, so that the anode of the light-emitting device can cooperate to drive the light-emitting layer to emit light. The connecting portion 152 can connect the plurality of main body portions 151 together to achieve a common cathode effect, which facilitates the control of the light-emitting function of the plurality of light-emitting devices. Here, the main body portion 151 can be block-shaped, and the connecting portion 152 can be mesh-shaped. For example, 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 a portion of the connecting portion 152 has a thickness less than the thickness of the main body portion 151, and another portion has a thickness equal to the thickness of the main body portion 151.

[0131] When at least a portion of the thickness 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 serves as a connection and does not directly control the light-emitting function of the light-emitting device. Therefore, by thinning the connecting portion 152, this application can improve the transmittance of the connecting portion 152 with minimal impact on the light-emitting function of the light-emitting device, thereby increasing the amount of ambient light and reducing the light leakage ratio.

[0132] Since the thickness of the connector 152 affects its resistance, to ensure a small voltage drop change in the second electrode layer 15, the ratio of the thickness of the connector 152 to the thickness of the main body 151 in the display panel provided in this embodiment can range from 66% to 100%. For example, the thickness of the connector 152 can be 10 nanometers, and the thickness of the main body 151 can be 15 nanometers. This effectively increases the ambient light level and reduces the light leakage ratio while minimizing the impact on the signal received by the second electrode layer 15.

[0133] In this application, various implementation methods can be used to adjust the thickness of the connecting portion 152 and the main body portion 151. Two embodiments are described below:

[0134] In the first implementation, the second electrode layer 15 can be fabricated using a patterning process. For example, after forming the entire second electrode layer 15, photoresist can be coated onto the surface of the second electrode layer 15, and a halftone mask can be used to expose and develop the photoresist. Since the halftone mask includes multiple regions with different transmittances, the halftone mask can control the degree of light transmission to expose the multiple regions of the photoresist to different degrees, thereby adjusting the etching depth of the regions corresponding to the connecting portion 152 and the main body portion 151, and thus making the thickness of the connecting portion 152 less than the thickness of the main body portion 151.

[0135] For the second implementation method, please refer to Figure 14 , Figure 14 yes Figure 12 Another cross-sectional view of the provided display panel at A4-A4. The second electrode layer 15 includes a first sublayer 15a and a second sublayer 15b stacked along a direction away from the substrate 11.

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

[0137] Therefore, in this embodiment, an open mask can be used to vapor deposit the first sub-layer 15a, and then a patterning process can be used to form the second sub-layer 15b. 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 that the patterning process may cause water and oxygen to invade the light-emitting layer 14.

[0138] In this application, the thickness of the connecting part can be further adjusted to reduce the light leakage ratio; please refer to [reference needed]. Figure 2 and Figure 15 , Figure 15 This is a partial top view of the second electrode layer in another display panel provided in this application embodiment. Multiple main body portions 151 are arranged in multiple columns along the first direction X and in multiple rows along the second direction Y. Here, the shape and arrangement of the multiple main body portions 151 can be similar to the shape and arrangement of the multiple first electrode blocks in the first electrode layer 12, so as to form a light-emitting device with the light-emitting blocks in the corresponding light-emitting layer 14.

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

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

[0141] 1) Please refer to Figure 16 , Figure 16 yes Figure 15 A cross-sectional schematic diagram of the provided display panel at A5-A5 shows that the thickness of the first sub-connecting electrode 152a is less than or equal to the thickness of the main body 151, and the thickness of the second sub-connecting electrode 152b is equal to the thickness of the first sub-connecting electrode 152a.

[0142] In the first case, the embodiments of this application can be implemented by a patterning process. Alternatively, the embodiments of this application can be implemented by setting a first sub-layer 15a and a second sub-layer 15b, in which a portion of the first sub-layer 15a and the second sub-layer 15b are used to form the main body 151, and another portion of the first sub-layer 15a is used to form the first sub-connecting electrode 152a and the second sub-connecting electrode 152b.

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

[0144] In the second case, the embodiments of this application can be implemented through a patterning process. Alternatively, the embodiments of this application can be implemented by setting a first sub-layer 15a and a second sub-layer 15b, in which a portion of the first sub-layer 15a and the second sub-layer 15b are used to form the main body 151 and the first sub-connecting electrode 152a, and another portion of the first sub-layer 15a is used to form the second sub-connecting electrode 152b.

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

[0146] In a third case, the embodiments of this application can be implemented through a patterning process. Since the thicknesses of the first sub-connecting electrode 152a, the main body 151, and the second sub-connecting electrode 152b are all different, the method of setting multiple sub-layers is more complex.

[0147] In this application, the light leakage ratio can also be reduced by setting a hollow area in the connecting part. Please refer to [reference needed]. Figure 19 and Figure 20 , Figure 19 This is a partial top view of the second electrode layer in another display panel provided in this application embodiment. Figure 20 yes Figure 19A cross-sectional schematic diagram of the provided display panel at point A6-A6. Multiple main body portions 151 are arranged in multiple columns along a first direction X and in multiple rows along a second direction Y. For example, the first direction X may be perpendicular to the second direction Y.

[0148] The connecting portion 152 has multiple hollow areas Q1, which are distributed between two adjacent main body portions 151 in the first direction X and in the second direction Y. Here, ambient light can be transmitted through the hollow areas 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 multiple hollow areas Q1 can be positioned at the same locations as the multiple second sub-connecting electrodes 152b, meaning that the hollow areas Q1 are formed when the thickness of the second sub-connecting electrodes 152b is zero. The portion of the connecting part 152 other than the hollow areas Q1 can be multiple strip structures Q2. The positions of the multiple strip structures Q2 can be the same as the positions of the multiple first sub-connecting electrodes 152a to ensure that two adjacent main body portions 151 can be connected together to achieve a common cathode effect. For example, the width of the strip structure Q2 perpendicular to its extension direction can be greater than 3 micrometers for ease of manufacturing.

[0150] exist Figure 15 In the illustrated embodiment, the thickness of the strip structure Q2 is less than the thickness of the main body 151. This increases the transmittance of the strip structure Q2, thereby increasing the amount of ambient light and reducing the light leakage ratio. Alternatively, the connecting portion 152 can only have a hollow area Q1, and the thickness of the strip structure Q2 can be equal to the thickness of the main body 151. This improves transmittance while ensuring minimal resistance differences in the second electrode layer 15 at various locations, thus enhancing the stability of the second electrode layer 15 when transmitting electrical signals.

[0151] In this application, the second electrode layer 15 with the hollowed-out region Q1 can be manufactured using various methods to achieve high transmittance. Two embodiments are described below:

[0152] In the first implementation, the second electrode layer 15 can be fabricated using a patterning process. For example, after forming the entire second electrode layer 15, photoresist can be coated onto the surface of the second electrode layer 15, and a halftone mask can be used to expose and develop the photoresist. Since the halftone mask includes multiple regions with different transmittances, the halftone mask can control the degree of light transmission to expose the photoresist to different degrees, thereby adjusting the etching depth of different regions. This allows the thickness of the connecting portion 152 to be less than the thickness of the main body portion 151, forming a cutout area Q1.

[0153] In the second implementation, the second electrode layer 15 can be fabricated using a cathode selection block. Please refer to [reference needed]. Figure 21 and Figure 22 , Figure 21 This is a schematic diagram of another display panel structure provided in an embodiment of this application (to clearly illustrate the relative positional relationship between the cathode selection block and the second electrode layer). Figure 21 The touch electrode layer is not shown, but this application embodiment does not limit this. Figure 22 yes Figure 21 A cross-sectional schematic diagram of the provided display panel along line A7-A7 is shown. The display panel 10 further includes: a plurality of cathode selection blocks Q3, which correspond to a plurality of cutout areas Q1, with the cathode selection blocks Q3 located within the corresponding cutout areas Q1. Here, the material of the cathode selection blocks Q3 and the material of the second electrode layer 15 repel each other. Therefore, in this embodiment, the cathode selection blocks Q3 can be formed at the positions corresponding to the multiple cutout areas Q1, making it difficult for the material of the second electrode layer 15 to adhere to the positions corresponding to the cutout areas Q1, thus allowing the second electrode layer 15 in the cutout areas Q1 to be removed.

[0154] The transmittance of the cathode selection block Q3 is greater than that of the second electrode layer 15. This results in higher transmittance of ambient light in the cutout area Q1, thereby increasing the amount of ambient light and reducing the light leakage ratio. Furthermore, the use of the cathode selection block Q3 reduces the manufacturing difficulty of the second electrode layer 15.

[0155] It should be noted that, Figures 12 to 22 The illustrated embodiment combines the solution of light-shielding layer 17 with the solution of thinning the second electrode layer 15. However, the embodiments of this application may also use only the solution of thinning the second electrode layer 15 to reduce the light leakage ratio. The embodiments of this application will not be described in detail here.

[0156] In summary, this application provides a display panel with a light-shielding layer located on the side of the pixel definition layer facing the substrate. Therefore, some of the light emitted from the light-emitting layer that is emitted in a direction away from the light-emitting side can be blocked by the light-shielding layer, thereby reducing light leakage from the display panel. Furthermore, the orthographic projection of the light-shielding layer onto the substrate overlaps with the orthographic projection of the touch electrode layer onto the substrate; that is, the structures of the light-shielding layer and the touch electrode layer are similar. This reduces the amount of ambient light blocked, thereby reducing the light leakage ratio and improving the brightness adjustment effect of the display device using this display panel.

[0157] On the other hand, this application also provides a display device, which includes a power supply component and a display panel provided in any of the above embodiments. The power supply component can supply power to the display panel. The display device may further include a light sensor, which may be located on the side of the display panel away from the light-emitting side. The light sensor can be used to receive ambient light so as to adjust the brightness of the display panel and other functions according to the received light. This display device can be any device that includes a display function. For example, the display device can be any product or component with a display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator.

[0158] Since the display device includes the display panel provided in the above embodiments, the display device can also have similar effects, that is, it can make the light leakage relatively low and the brightness adjustment effect of the display device better.

[0159] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0160] It should be noted that the dimensions of layers and regions may be exaggerated in the accompanying drawings for clarity. Furthermore, it is 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 there may be intermediate layers. Additionally, it is understood that when an element or layer is referred to as being "below" another element or layer, it can be directly below the other element, or there may be more than one intermediate layer or element. Furthermore, it is also 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 there may be more than one intermediate layer or element. Similar reference numerals throughout indicate similar elements.

[0161] In this application, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" means two or more, unless otherwise expressly defined.

[0162] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display panel, characterized in that, The display panel includes: 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 stacked on one side of the substrate in a direction away from the substrate. The pixel definition layer has a plurality of pixel openings, and at least a portion of the light-emitting layer is located within the plurality of pixel openings. The touch electrode layer is located on the side of the second electrode layer that faces away from the substrate; The light-shielding layer is located on the side of the pixel definition layer facing the substrate. The orthographic projection of the light-shielding layer on the substrate overlaps with the orthographic projection of the touch electrode layer on the substrate. The light-shielding layer has a plurality of first grid holes, which correspond to the plurality of pixel openings. The orthographic projection of the first grid holes on the substrate overlaps with the orthographic projection of the corresponding pixel openings on the substrate.

2. The display panel according to claim 1, characterized in that, The orthographic projection of the light-shielding layer on the substrate is located within the orthographic projection of the touch electrode layer on the substrate.

3. The display panel according to claim 1, characterized in that, The touch electrode layer has a plurality of second mesh holes, which correspond to the plurality of first mesh holes. The orthographic projection of the second mesh hole on the substrate is located within the orthographic projection of the corresponding first mesh hole on the substrate.

4. The display panel according to claim 3, characterized in that, The touch electrode layer includes: multiple first touch lines and multiple second touch lines, wherein the extension direction of the first touch lines intersects the extension direction of the second touch lines, and the multiple first touch lines and the multiple second touch lines are used to form the multiple second grid holes; The light-shielding layer includes: multiple first light-shielding strips and multiple second light-shielding strips, wherein the extension direction of the first light-shielding strips is parallel to the extension direction of the first touch line, and the extension direction of the second light-shielding strips is parallel to the extension direction of the second touch line; the multiple first light-shielding strips and the multiple second light-shielding strips are used to form the multiple first mesh holes; Wherein, 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 according to claim 4, characterized in that, The light-shielding layer has a plurality of first isolation openings, and the touch electrode layer has a plurality of second isolation openings. At least a portion of the plurality of first isolation openings correspond to the plurality of second isolation openings, and the orthographic projection of the second isolation opening on the substrate at least partially overlaps with the orthographic projection of the corresponding first isolation opening on the substrate.

6. The display panel according to claim 5, characterized in that, The light-shielding layer is disposed in the same layer as the first electrode layer and is made of the same material.

7. The display panel according to claim 6, characterized in that, The first electrode layer includes: a plurality of first electrode blocks; the light-shielding layer is divided into a plurality of light-shielding portions by the first partition; each light-shielding portion has a first strip and a second strip connected to each other; the first strip is the portion of the first light-shielding strip located between two adjacent first partitions; and the second strip is the portion of the second light-shielding strip located between two adjacent first partitions. The plurality of light-shielding parts correspond to the plurality of first electrode blocks, and the light-shielding parts are connected to the corresponding first electrode blocks.

8. The display panel according to claim 6, characterized in that, The light-shielding layer is disposed separately from the first electrode layer, and the display panel further includes: a first power supply line, which is electrically connected to the light-shielding layer.

9. The display panel according to claim 5, characterized in that, A portion of the orthographic projection of the light-shielding layer on the substrate overlaps with the orthographic projection of the first electrode layer on the substrate, while the other portion does not coincide with the orthographic projection of the first electrode layer on the substrate.

10. The display panel according to claim 9, characterized in that, The display panel further includes a planarization layer located on the side of the first electrode layer facing the substrate; A portion of the light-shielding layer is located between the first electrode layer and the pixel definition layer, and another portion is located between the planarization layer and the pixel definition layer.

11. The display panel according to claim 9, characterized in that, The pixel definition layer is transparent, and the light-blocking layer is light-absorbing.

12. The display panel according to any one of claims 1-11, characterized in that, The display panel further includes: a first dimming layer and a second dimming layer; The first dimming layer is located on the side of the second electrode layer away from the substrate. The first dimming layer has a plurality of dimming holes, which correspond to the plurality of pixel openings. The orthographic projection of the dimming hole on the substrate overlaps with the orthographic projection of the corresponding pixel opening on the substrate. The side of the first dimming layer away from the substrate has a groove located between two adjacent dimming holes. The second dimming layer is located on the side of the first dimming layer away from the substrate. At least a portion of the second dimming layer is located in the plurality of dimming holes and the groove. The portion of the second dimming layer located in the dimming hole contacts the inner wall of the dimming hole, and the portion of the second dimming layer located in the groove contacts the groove surface of the groove. The refractive index of the second dimming layer is greater than that of the first dimming layer.

13. The display panel according to claim 12, characterized in that, The bottom of the groove has multiple recessed microstructures.

14. The display panel according to claim 12, characterized in that, The display panel further includes an encapsulation layer, which is located between the touch electrode layer and the second electrode layer in a direction perpendicular to the substrate, and the first dimming layer is located on the side of the touch electrode layer opposite to the encapsulation layer.

15. The display panel according to any one of claims 1-11, characterized in that, The second electrode layer includes: a plurality of main body portions corresponding to a plurality of pixel openings, and a connecting portion connected to the plurality of main body portions, wherein the orthographic projection of the main body portion on the substrate overlaps with the orthographic projection of the corresponding pixel opening on the substrate; In the direction perpendicular to the substrate, the thickness of the connecting portion is less than or equal to the thickness of the main body portion.

16. The display panel according to claim 15, characterized in that, The plurality of main body parts are arranged in multiple columns along the first direction and in multiple rows along the second direction; The connecting portion has multiple hollow areas, which are distributed between two adjacent main body portions in the first direction and between two adjacent main body portions in the second direction.

17. The display panel according to claim 16, characterized in that, The display panel further includes: a plurality of cathode selection blocks, the plurality of cathode selection blocks corresponding to the plurality of cutout areas, and the cathode selection blocks being located within the corresponding cutout areas; The transmittance of the cathode selective block is greater than that of the second electrode layer.

18. The display panel according to claim 15, characterized in that, The plurality of main body parts are arranged in multiple columns along the first direction and in multiple rows along the second direction; The connection portion includes: a plurality of first sub-connection electrodes and a plurality of second sub-connection electrodes; the first sub-connection electrodes are connected to two adjacent main body portions; the second sub-connection electrodes are distributed between the two adjacent main body portions in the first direction and between the two adjacent main body portions in the second direction; 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 main body, 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 according to claim 18, characterized in that, The second electrode layer includes: a first sublayer and a second sublayer stacked in a direction away from the substrate; Wherein, when the thickness of the first sub-connecting electrode is less than the thickness of the main body and the thickness of the second sub-connecting electrode is equal to the thickness of the first sub-connecting electrode, a portion of the first sub-layer and the second sub-layer are used to form the main body, and another portion of the first sub-layer is used to form the first sub-connecting electrode and the second sub-connecting electrode. Alternatively, when the thickness of the first sub-connecting electrode is equal to the thickness of the main body and the thickness of the second sub-connecting electrode is less than the thickness of the first sub-connecting electrode, a portion of the first sub-layer and the second sub-layer are used to form the main body and the first sub-connecting electrode, and another portion of the first sub-layer is used to form the second sub-connecting electrode.

20. A display device, characterized in that, include: A power supply component, and a display panel electrically connected to the power supply component, the display panel comprising: the display panel according to any one of claims 1 to 19.

Images