Display panel and display device

Abstract

The invention relates to a display panel and a display device. The display panel includes a substrate; the driving circuit layer, the light-emitting element layer, the thin film packaging layer and the black matrix are located on the substrate; the driving circuit layer is located between the substrate and the light-emitting element layer; the thin film packaging layer is located on one side of the light-emitting element layer away from the substrate; the black matrix is located on one side, deviating from the substrate, of the film packaging layer; the driving circuit layer comprises a plurality of pixel driving circuits; the light-emitting element layer comprises a plurality of light-emitting elements; the vertical projection of the black matrix on the substrate is located in the vertical projection of the gap of the adjacent light-emitting elements on the substrate; the color resistance layer is located on the thin film packaging layer and the black matrix; the infrared photosensitive element is positioned on one side, deviating from the driving circuit layer, of the substrate; the black matrix is an infrared light-transmitting layer; the color resistance layer is provided with a first hollow structure, and the vertical projection of a gap between adjacent light-emitting elements at the position of the infrared photosensitive element on the substrate is at least partially overlapped with the vertical projection of the first hollow structure on the substrate. According to the invention, the infrared light transmittance can be improved.

Description

Technical Field

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

[0002] Taking a mobile phone as an example, the display interface of the mobile phone needs to realize not only the display function, but also functions such as fingerprint recognition, etc. Therefore, it is necessary to set a corresponding sensor on the display side.

[0003] As for the infrared photosensitive element, if it is necessary to set an infrared photosensitive element on the display side of the mobile phone, a hole can be made in the display panel. At the position of the hole, the display panel is in a completely light-transmitting state and no longer displays content. The infrared photosensitive element is set at the position of the hole and on the side of the display panel away from the light-emitting side. In this way, a relatively simple solution of setting an infrared photosensitive element on the display side can be realized.

[0004] However, drilling holes in the display panel will affect the display integrity of the display panel, so a solution has gradually been developed to retain the display function of the display panel at the location of the infrared photosensitive element. The main problem with this solution is that the overall transmittance of the display panel is low, but if the transmittance at the location of the infrared photosensitive element is too low, it will affect the infrared perception effect of the infrared photosensitive element. If the transmittance at the location of the infrared photosensitive element is only high, the reflectivity difference between the infrared photosensitive element and other locations will be too large, which will eventually cause a difference in display effect and affect the user's perception. Generally speaking, the higher the regional transmittance, the greater the corresponding reflectivity, which in turn affects the display consistency between this area and other areas when the screen is off. Summary of the invention

[0005] In order to solve the above technical problems, the present application provides a display panel and a display device.

[0006] In a first aspect, the present application provides a display panel, comprising:

[0007] substrate;

[0008] A driving circuit layer, a light-emitting element layer, a thin film encapsulation layer and a black matrix are located on the substrate; the driving circuit layer is located between the substrate and the light-emitting element layer; the thin film encapsulation layer is located on the side of the light-emitting element layer away from the substrate; the black matrix is ​​located on the side of the thin film encapsulation layer away from the substrate; the driving circuit layer includes a plurality of pixel driving circuits; the light-emitting element layer includes a plurality of light-emitting elements arranged in an array; the vertical projection of the black matrix on the substrate is located within the vertical projection of the gap between adjacent light-emitting elements on the substrate;

[0009] A color resist layer located on the thin film encapsulation layer and the black matrix;

[0010] An infrared photosensitive element located on a side of the substrate away from the driving circuit layer;

[0011] Wherein, the black matrix is ​​an infrared light-transmitting layer;

[0012] The color resist layer is provided with a first hollow structure, and a vertical projection of a gap between adjacent light-emitting elements at a location where the infrared photosensitive element is located on the substrate at least partially overlaps with a vertical projection of the first hollow structure on the substrate.

[0013] In a second aspect, based on the same inventive concept, the present application also provides a display device, comprising a display panel as described in any one of the first aspects.

[0014] Compared with the prior art, the technical solution provided by this application has the following advantages:

[0015] In the technical solution provided by the present application, the black matrix is ​​set as an infrared light-transmitting layer, and the infrared light can pass through the display panel based on the black matrix located between adjacent light-emitting elements, that is, the black matrix can play a better role in shielding visible light, so that the visible light transmittance at the location of the infrared photosensitive element is the same or similar to the visible light transmittance at the location of the non-infrared photosensitive element, and the infrared light transmittance at the location of the infrared photosensitive element can be increased. Therefore, the infrared photosensitive element can achieve a better infrared perception effect and avoid the problem of display effect differences. Since the color resistance layer of the present application is provided with a first hollow structure at the gap between adjacent light-emitting elements at the location of the infrared photosensitive element, it will not have a shielding effect on the infrared light, and further improves the infrared light transmittance at the location of the infrared photosensitive element. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 A schematic diagram of a display panel structure provided in an embodiment of the present application;

[0019] Figure 2 A schematic diagram of another display panel structure provided in an embodiment of the present application;

[0020] Figure 3 A schematic diagram of another display panel structure provided in an embodiment of the present application;

[0021] Figure 4 A schematic diagram of another display panel structure provided in an embodiment of the present application;

[0022] Figure 5 A schematic diagram of another display panel structure provided in an embodiment of the present application;

[0023] Figure 6 A schematic diagram of another display panel structure provided in an embodiment of the present application;

[0024] Figure 7 A schematic diagram of another display panel structure provided in an embodiment of the present application;

[0025] Figure 8 A schematic diagram of another display panel structure provided in an embodiment of the present application;

[0026] Fig. 9 A schematic diagram of another display panel structure provided in an embodiment of the present application;

[0027] Fig.10 A schematic diagram of another display panel structure provided in an embodiment of the present application;

[0028] Fig.11 A schematic diagram of another display panel structure provided in an embodiment of the present application;

[0029] Fig.12 A schematic diagram of another display panel structure provided in an embodiment of the present application;

[0030] Fig.13 A schematic diagram of another display panel structure provided in an embodiment of the present application;

[0031] Fig.14 A schematic diagram of another display panel structure provided in an embodiment of the present application;

[0032] Fig.15 A schematic diagram of the structure of a display device provided in an embodiment of the present application.

[0033] Reference numerals:

[0034] 000, substrate; 100, driving circuit layer; 200, light-emitting element layer; 300, thin film encapsulation layer; 400, black matrix; 101, pixel driving circuit; 201, light-emitting element; 500, color resistance layer; 600, infrared photosensitive element; 501, first hollow structure; AA1, first area; AA2, second area; AA3, third area; 102, transparent wire; 103, second hollow structure; 203, anode layer; 2031, anode; 202, cathode layer; 2021, third hollow structure; 800, laser shielding pattern layer; 900, channel light-shielding layer; 203, anode layer; 204, pixel defining layer; 205, light-emitting functional layer; 801, cathode suppression pattern layer; PLN1, organic insulating layer; 104, inorganic insulating layer; 1000, display panel. DETAILED DESCRIPTION

[0035] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present application, rather than all of the embodiments.

[0037] It is obvious to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention. Therefore, the present invention is intended to cover modifications and variations of the present invention that fall within the scope of the corresponding claims (technical solutions claimed for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present invention can be combined with each other without contradiction.

[0038] Figure 1 A schematic diagram of a display panel structure provided in an embodiment of the present application includes:

[0039] Substrate 000.

[0040] A driving circuit layer 100, a light-emitting element layer 200, a thin film encapsulation layer 300 and a black matrix 400 are located on a substrate 000. The driving circuit layer 100 is located between the substrate 000 and the light-emitting element layer 200. The thin film encapsulation layer 300 is located on the side of the light-emitting element layer 200 away from the substrate 000. The black matrix 400 is located on the side of the thin film encapsulation layer 300 away from the substrate 000. The driving circuit layer 100 includes a plurality of pixel driving circuits 101. The light-emitting element layer 200 includes a plurality of light-emitting elements 201 arranged in an array. The vertical projection of the black matrix 400 on the substrate 000 is located within the vertical projection of the gap between adjacent light-emitting elements 201 on the substrate 000.

[0041] The color resist layer 500 is located on the thin film encapsulation layer 300 and the black matrix 400 .

[0042] The infrared photosensitive element 600 is located on a side of the substrate 000 away from the driving circuit layer 100 .

[0043] The black matrix 400 is an infrared light-transmitting layer.

[0044] The color resist layer 500 is provided with a first hollow structure 501 , and the vertical projection of the gap between adjacent light emitting elements 201 at the position where the infrared sensing element 600 is located on the substrate 000 at least partially overlaps with the vertical projection of the first hollow structure 501 on the substrate 000 .

[0045] In the existing CFOT (Color Filter On Touch, depolarization technology) type OLED (Organic Light-Emitting Diode) display panel, a color resist layer 500 is generally provided on the side of the black matrix 400 away from the substrate 000. Both the black matrix 400 and the color resist layer 500 will affect the infrared light transmittance of the display panel, thereby affecting the infrared photosensitive effect of the infrared photosensitive element 600 provided on the side of the substrate 000 away from the driving circuit layer 100. Among them, the infrared photosensitive element 600 represents an element that can generate a specific signal based on the received infrared light, so that the display device composed of the display panel can realize a specific function, such as fingerprint recognition, face recognition, etc. In the case of poor infrared photosensitive effect, the effect of the infrared recognition function will be poor, such as inaccurate fingerprint recognition, low recognition rate, etc.

[0046] After research, it was found that the black matrix 400 has the greatest impact on infrared light. Therefore, the embodiment of the present application sets the black matrix 400 as an infrared light-transmitting layer, and the infrared light-transmitting layer has a high transmittance to infrared light. Therefore, the embodiment of the present application can improve the infrared light transmittance of the display panel under the premise of ensuring that the transmittance at the location of the infrared photosensitive element 600 is the same or similar to the reflectivity at the location of the non-infrared photosensitive element 600, so that the infrared photosensitive element 600 can receive more infrared light, thereby achieving a better infrared photosensitive effect.

[0047] On the other hand, since the embodiment of the present application sets the color resistance layer 500 at the position of the infrared sensing element 600 as the first hollow structure 501, that is, in fact, no color resistance is set at the position of the first hollow structure 501, the infrared light will not be absorbed by the color resistance, thereby further improving the infrared light transmittance of the display panel at the position of the infrared sensing element 600.

[0048] By the above Figure 1 It can be understood from the structure that infrared light is incident on the display panel from the side of the color resist layer 500 away from the substrate and passes through the display panel, and finally reaches the infrared photosensitive element 600. In this process, both the color resist layer 500 and the black matrix 400 absorb infrared light, and in a progressive manner, that is, after the infrared light is partially absorbed by the color resist layer 500, it passes through the black matrix 400 and is partially absorbed again. After the improvement, the infrared light transmittance of the black matrix 400 is greatly improved, and the first hollow structure 501 will no longer absorb infrared light. Therefore, with the improvement of the above two structures, the infrared light transmittance of the display panel can be greatly improved.

[0049] In some embodiments, the black matrix has a transmittance of more than 70% for infrared light and an absorbance of more than 2 / μm for visible light.

[0050] The light in the infrared band is expressed as infrared light, and the light in the visible light band is expressed as visible light. The absorbance represents the logarithm to the base 10 of the ratio of the incident light intensity before the light passes through a certain substance to the transmitted light intensity after the light passes through the substance (i.e., lg(I0 / I1)), where I0 is the incident light intensity and I1 is the transmitted light intensity. The stronger the absorbance, the weaker the intensity of the visible light after passing through the black matrix, which is more conducive to isolating different light-emitting elements and blocking the light inside the display panel, and is conducive to ensuring the display effect of the display panel. After research, it was found that when the absorbance of the black matrix to visible light is greater than 2 / μm, it can better ensure the display effect of the display panel. On the other hand, since the black matrix has a high transmittance to infrared light, more infrared light can pass through the display panel and be received by the infrared photosensitive element. When the transmittance to infrared light is greater than 70%, the infrared photosensitive element can achieve a better infrared photosensitive effect. That is, based on the above scheme, the provision of the infrared transparent layer can not only achieve a higher infrared light transmittance in the area where the infrared photosensitive element is located, but also improve the high consistency of display performance between the area where the infrared photosensitive element is located and the area where the non-infrared photosensitive element is located.

[0051] In some embodiments, a black matrix includes a substrate and a black dopant dye.

[0052] Specifically, the transmittance of the traditional black matrix is ​​extremely low for both visible light and infrared light. In the embodiment of the present application, in order to achieve both high absorption of visible light and high transmittance of infrared light, a black matrix can be prepared by adding a substrate to a black doped dye. The material of the substrate can be an acrylic resin, or phenolic, epoxy, silicone, etc., and the black doped dye can be an organic black pigment, such as aniline, perylene black, etc.

[0053] The black matrix prepared by mixing the two can maintain both a low transmittance of visible light and a high transmittance of infrared light.

[0054] In some embodiments, the doping content of the black doping dye is 10% to 20%.

[0055] Specifically, the doping content of the black doped dye should not be too high or too low. When the doping content is too high, the transmittance of infrared light may be greatly reduced. When the doping content is too low, the transmittance of visible light may be high, affecting the display effect of the display panel. After research, it was found that when the doping content is 10% to 20%, the black matrix can maintain a low transmittance of visible light and a high transmittance of infrared light.

[0056] Continue reading Figure 1 In some embodiments, the thickness H of the black matrix 400 ranges from 1 to 3 μm.

[0057] Specifically, if the thickness H of the black matrix 400 is too small, the flatness of the black matrix 400 may not be guaranteed. When the flatness of the black matrix 400 is poor, it may affect the preparation of other film layers on the side of the black matrix 400 away from the substrate 000. If the thickness H of the black matrix 400 is too high, film tearing (peeling) may occur, affecting the quality of the display panel. Furthermore, the role of the black matrix 400 is to maintain a low transmittance of visible light and a high transmittance of infrared light. As long as the black matrix 400 is large enough to a certain thickness, it can have the effect of low visible light transmittance. The thicker black matrix 400 not only has no greater advantage, but also affects the transmittance of infrared light due to the thickness of the film layer. After research, it was found that when the thickness H ranges from 1 to 3 μm, the black matrix 400 can maintain both a low transmittance of visible light and a high transmittance of infrared light.

[0058] Figure 2 A schematic diagram of another display panel structure provided in an embodiment of the present application. In some embodiments, the display area of ​​the display panel includes a first area AA1, a second area AA2, and a third area AA3. The infrared photosensitive element 600 is located in the third area AA3. The second area AA2 is located between at least a portion of the first area AA1 and the third area AA3. In a direction perpendicular to the substrate 000, the pixel driving circuit 101 does not overlap with the third area AA3.

[0059] The light emitting element 201 in the third area AA3 is electrically connected to the pixel driving circuit 101 in the second area AA2.

[0060] Specifically, the light emitting element 201 in the display panel is connected to the pixel driving circuit 101 and emits light under the control of the pixel driving circuit 101. For a conventional display panel, a pixel driving circuit 101 is generally provided on a side of each light emitting element 201 facing the substrate 000. Figure 2 As shown in the first area AA1 in FIG. However, the pixel driving circuit 101 is composed of multiple metal layers, which has a complex structure, has a strong effect of blocking and absorbing infrared light, and cannot maintain a high infrared light transmittance. Similarly, if the pixel driving circuit 101 is also provided on the side of the light-emitting element 201 located in the third area AA3 facing the substrate 000, it will also have a greater impact on the infrared photosensitive effect of the infrared photosensitive element 600 located on the substrate 000 away from the light-emitting side.

[0061] To this end, the embodiment of the present application removes the pixel driving circuit 101 of the third area AA3, connects the light emitting element 201 located in the third area AA3 to the pixel driving circuit 101 of the second area AA2, and is driven by the pixel driving circuit 101 of the second area AA2. Since the pixel driving circuit 101 is no longer provided in the third area AA3, the infrared light passing through the third area AA3 will not be affected by the shielding effect of the pixel driving circuit 101, thereby improving the infrared light transmittance of the third area AA3.

[0062] Figure 3 A schematic diagram of another display panel structure provided by an embodiment of the present application. In some embodiments, the driving circuit layer 100 further includes a plurality of transparent wires 102. The transparent wires 102 electrically connect the pixel driving circuit 101 of the second area AA2 with the light emitting element 201 of the third area AA3.

[0063] like Figure 3 As shown, when the pixel driving circuit 101 of the second area AA2 is electrically connected to the light-emitting element 201 of the third area AA3 through the transparent wire 102: first, although the light-emitting element 201 of the third area AA3 still needs to be connected to the pixel driving circuit 101 of the second area AA2 through the wire, compared with setting the pixel driving circuit 101 in the third area AA3, it is possible to reduce the number of layers and occupied area of ​​the metal film layer used to form the wire; second, the wire that cannot transmit infrared light is changed to a light-transmitting structure, further improving the transmittance of infrared light. It should be noted that Figure 3 The figure only conceptually illustrates that the light emitting element 201 in the third area AA3 is connected to the pixel driving circuit 101 in the second area AA2 through the transparent wire 102. The connection method is not limited. The routing method of the transparent wire 102 and the corresponding relationship between the light emitting element 201 in the third area AA3 and the pixel driving circuit 101 in the second area AA2 will be described in the subsequent embodiments.

[0064] Figure 4 A schematic diagram of another display panel structure provided by an embodiment of the present application. In some embodiments, at least a portion of the transparent conductive lines 102 are located in different layers. In a direction perpendicular to the substrate 000, the transparent conductive lines 102 located in different layers at least partially overlap.

[0065] Specifically, the material of the transparent wire 102 can be ITO (Indium Tin Oxide). The conductivity of the transparent wire 102 is generally low, and the conductive effect is poor. If it is needed to be used as a wire, its cross-sectional area needs to be increased. In the display panel, the transparent wire 102 is prepared by patterning a metal film layer. The thickness of the metal film layer along the direction perpendicular to the substrate 000 should not be too large. Therefore, the way to increase the cross-sectional area of ​​the transparent wire 102 is generally to increase the width of the transparent wire 102 parallel to the substrate 000. Further, the space in the display panel is limited, and the number and density of transparent wires 102 that need to connect the light-emitting element 201 located in the third area AA3 to the pixel driving circuit 101 located in the second area AA2 are large. A transparent wire 102 that is too wide will make it impossible for the transparent wire 102 to be laid out in the same layer, affecting the layout of the transparent wire 102, or affecting the width of the transparent wire 102.

[0066] To this end, in the embodiment of the present application, at least a portion of the transparent conductive lines 102 may be disposed in different layers, and the transparent conductive lines 102 in different layers may at least partially overlap. Figure 4 As shown, even if there is overlap between transparent conductive wires 102 arranged in different layers, there will be no relevant impact, the transparent conductive wires 102 can be used as conductive wires, the width of the transparent conductive wires 102 can be increased to a greater extent, and the difficulty of laying out the transparent conductive wires 102 can be reduced to a greater extent. Figure 4 The transparent wires 102 are illustrated as different filling shapes to illustrate that they are arranged in different layers, but they are all transparent wires 102. The materials of the transparent wires 102 in different layers can be the same. The transparent wires 102 arranged in different layers can be connected to the corresponding pixel driving circuits 101 and light-emitting elements 201 through vias.

[0067] In some embodiments, the transparent wires arranged in different layers may be arranged to completely overlap in a direction perpendicular to the substrate, so that the infrared light cannot be blocked in the area where the transparent wires are not arranged, thereby reducing the influence of the transparent wires on the infrared light to a greater extent.

[0068] Figure 5 A schematic diagram of another display panel structure provided by an embodiment of the present application. In some embodiments, at least a portion of the inorganic insulating layer 104 in the driving circuit layer 100 is provided with a second hollow structure 103 in the third area AA3.

[0069] like Figure 5 As shown, Figure 5Schematic diagrams of the film structure of the second area AA2 and the third area AA3 are respectively shown. It should be noted that for the convenience of illustration, and the embodiment of the present application does not elaborate on the differences between the inorganic insulating layers 104 of different layers, all the inorganic insulating layers 104 are simply shown as the same symbol. Figure 5 In the second area AA2, since it is necessary to set the pixel driving circuit 101 on the side of the light-emitting element 201 facing the substrate 000, it is necessary to set multiple metal layers, and correspondingly, it is also necessary to set multiple inorganic insulating layers 104 to achieve the insulation effect between the various metal layers. In the third area AA3, the pixel driving circuit 101 is not set on the side of the light-emitting element 201 facing the substrate 000, so in fact, part of the inorganic insulating layer 104 is not needed to achieve the insulation effect, and it is only necessary to isolate water and oxygen to avoid damaging the display panel. However, after research, it was found that the above-mentioned multi-layer inorganic insulating layer 104 will have a greater impact on infrared light. Under the influence of the multi-layer inorganic insulating layer 104, the proportion of infrared light that can pass through the multi-layer inorganic insulating layer 104 and finally reach the infrared sensing element 600 is low.

[0070] To this end, the embodiment of the present application can enable at least part of the inorganic insulating layer 104 to be provided with a second hollow structure 103 in the third area AA3, such as Figure 5 As shown, in the third area AA3, at least part of the inorganic insulating layer 104 is hollowed out and filled with other transparent film layers (organic insulating layers or inorganic insulating layers), thereby reducing the number of film layers and simplifying the complexity of the film layers. Figure 5 FIG. 1 shows that the second hollow structure 103 is filled through the organic insulating layer PLN1.

[0071] It should be noted that the embodiments of the present application are Figure 5 It is shown in the figure that the second hollow structure 103 is set in all the inorganic insulating layers 104 in the third area AA3, that is, all the inorganic insulating layers 104 are removed, but those skilled in the art can only remove part of the inorganic insulating layer 104 and retain part of the inorganic insulating layer 104 according to actual needs.

[0072] On the other hand, when the thickness of the inorganic insulating layer is large and the second hollow structure 103 is provided, a large step difference may be generated, and the insulating layer used to fill the second hollow structure 103 cannot perfectly fill the second hollow structure 103, which may affect the quality of the display panel. To this end, the embodiment of the present application can also provide the second hollow structure 103 in part of the inorganic insulating layer.

[0073] Figure 6 A schematic diagram of another display panel structure provided in an embodiment of the present application. In some embodiments, the display panel includes a plurality of pixel units, and the pixel unit includes a plurality of sub-pixels.

[0074] In the same pixel unit of the second area AA2, the light emitting elements 201 of two adjacent sub-pixels of the same color are electrically connected to the same pixel driving circuit 101. In the same pixel unit of the third area AA3, the light emitting elements 201 of two adjacent sub-pixels of the same color are electrically connected to the same pixel driving circuit 101 of the second area AA2.

[0075] In the above embodiment, the light emitting element 201 in the third area AA3 may be electrically connected to the pixel driving circuit 101 in the second area AA2 by using a wire, so as to control the light emitting element 201 in the third area AA3.

[0076] Specifically, a group of pixel units represents a group of functional units that can display any color. Based on the light-emitting principle of the display panel, which is generally to display different colors by mixing the colors of multiple color sub-pixels, a group of pixel units may include multiple sub-pixels of different colors. Figure 6 In the figure, the red sub-pixel is indicated as R, the green sub-pixel is indicated as G, and the blue sub-pixel is indicated as B. Figure 6 As an example, Figure 6 In the figure, only the second area AA2 and the third area AA3 each include a group of pixel units, and the other groups of pixel units can be Figure 6 The structure is the same or similar, that is, a group of pixel units in the second area AA2 includes two red sub-pixels R, two green sub-pixels G and two blue sub-pixels B, and a group of pixel units in the third area AA3 also includes two red sub-pixels R, two green sub-pixels G and two blue sub-pixels B, and the pixel unit includes a light-emitting element 201 corresponding to the red, green and blue sub-pixels. Figure 6 From the structure in FIG. 1 , each transparent wire 102 crosses each other, so transparent wires 102 of different layers can be used to connect the pixel driving circuit 101 and the light emitting element 201. Figure 6 Different filling patterns are used to indicate transparent conductive lines 102 of different layers.

[0077] Specifically, in the second area AA2, the light emitting elements 201 of two adjacent red sub-pixels R are electrically connected to the same pixel driving circuit 101, the light emitting elements 201 of two adjacent green sub-pixels G are electrically connected to the same pixel driving circuit 101, and the light emitting elements 201 of two adjacent blue sub-pixels B are electrically connected to the same pixel driving circuit 101. Taking the adjacent pixel units of the second area AA2 and the third area AA3 as an example, in the third area AA3, the light emitting elements 201 of two adjacent red sub-pixels R are electrically connected to the same pixel driving circuit 101 as the light emitting elements 201 of two adjacent red sub-pixels R in the second area AA2, the light emitting elements 201 of two adjacent green sub-pixels G are electrically connected to the same pixel driving circuit 101 as the light emitting elements 201 of two adjacent green sub-pixels G in the second area AA2, and the light emitting elements 201 of two adjacent blue sub-pixels B are electrically connected to the same pixel driving circuit 101 as the light emitting elements 201 of two adjacent blue sub-pixels B in the second area AA2. Therefore, it is achieved that the light emitting element 201 in the third area AA3 is controlled by the pixel driving circuit 101 in the second area AA2.

[0078] On this basis, the light-emitting elements 201 corresponding to adjacent sub-pixels of the same color emit light under the control of the same pixel driving circuit 101, that is, the working states of the light-emitting elements 201 corresponding to adjacent sub-pixels of the same color are consistent, which has less impact on the display effect than connecting the light-emitting elements 201 corresponding to the sub-pixels of the same color in the second area AA2 and the third area AA3 together.

[0079] In some possible implementations, in order to control the light-emitting elements corresponding to the sub-pixels, it is also possible to consider additionally providing a pixel driving circuit in the second area to control the light-emitting elements in the third area.

[0080] Specifically, compared to the above Figure 5 The above scheme Figure 5 In the scheme, at least part of the pixel driving circuits 101 originally used to control the light-emitting elements 201 in the second area AA2 are changed to control the light-emitting elements 201 in the third area AA3. At least part of the pixel driving circuits 101 in the second area AA2 can realize a single pixel driving circuit 101 controlling multiple light-emitting elements 201. In the second area, an additional pixel driving circuit is set to control the light-emitting elements in the third area, which means that on the basis of ensuring that the light-emitting elements in the second area remain unchanged in the original control scheme, a new pixel driving circuit is added to the second area to control the light-emitting elements in the third area. For example, the original scheme in the second area is that a single pixel driving circuit controls a single light-emitting element. The improved scheme is to set an additional pixel driving circuit to control the light-emitting elements in the third area on the basis of ensuring that the original pixel driving circuit in the second area still controls a single light-emitting element. In this way, more refined control of the light-emitting elements can be achieved.

[0081] In some possible implementations, the same pixel driving circuit in the second area may be connected to light-emitting elements corresponding to a plurality of adjacent sub-pixels of the same color in the third area.

[0082] Figure 7 A schematic diagram of another display panel structure provided by an embodiment of the present application. In some embodiments, in a same pixel unit in the second region, anodes 2031 of two light emitting elements 201 connected to a same pixel driving circuit are electrically connected via a transparent wire 102 .

[0083] In the same pixel unit of the third region, the anodes 2031 of the two light emitting elements 201 connected to the same pixel driving circuit are electrically connected through the transparent wire 102 .

[0084] like Figure 7 As shown, Figure 7 A group of pixel units is shown in FIG. 1 , and other groups of pixel units can be connected with Figure 7 The structure is the same or similar to that in the embodiment, the pixel unit includes a light emitting element 201 corresponding to the red, green and blue sub-pixels, Figure 7 In the figure, the red sub-pixel is indicated as R, the green sub-pixel is indicated as G, and the blue sub-pixel is indicated as B, that is, a group of pixel units includes two red sub-pixels R, two green sub-pixels G, and two blue sub-pixels B. In the embodiment of the present application, the anodes 2031 of the light-emitting elements 201 connected to the same pixel driving circuit 101 can be connected together by using a transparent wire 102, and then further connected to the corresponding pixel driving circuit 101.

[0085] Compared with ordinary wires, using transparent wires 102 to connect the light-emitting element 201 has less impact on infrared light and higher transmittance of infrared light, which can enable the infrared sensing element 600 to achieve better infrared sensing effect.

[0086] It should be noted that the connection method of the second zone and the third zone can be the same or similar, and the connection principle of the two is the same, so only the schematic diagram is shown. Figure 7 , Figure 7 The light-emitting element 201 in the second region may be the light-emitting element 201 in the second region or the light-emitting element 201 in the third region.

[0087] Figure 8 A schematic diagram of another display panel structure provided in an embodiment of the present application. In some embodiments, the display panel includes a plurality of pixel units, and the pixel unit includes a plurality of sub-pixels. In adjacent pixel units of the second area AA2 and the third area AA3, the light-emitting element 201 of the sub-pixel of the third area AA3 is connected to the same pixel driving circuit 101 as the light-emitting element 201 of the sub-pixel of the same color in the second area AA2.

[0088] like Figure 8 As shown, in some other implementations, the light emitting elements 201 corresponding to the same color sub-pixels in the second area AA2 and the third area AA3 may be connected to the same pixel driving circuit 101 . Figure 8 A group of pixel units are schematically shown in the second area AA2 and the third area AA3 respectively, and the pixel unit includes light-emitting elements 201 corresponding to three color sub-pixels of red, green and blue. Figure 8 The light emitting elements 201 corresponding to the non-adjacent sub-pixels of the same color are connected together, and only Figure 8 From the structure in FIG. 1 , each transparent wire 102 crosses each other, so transparent wires 102 of different layers can be used to connect the pixel driving circuit 101 and the light emitting element 201. Figure 8 Different filling patterns are used to indicate transparent conductive lines 102 of different layers.

[0089] Specifically, in adjacent pixel units of the second area AA2 and the third area AA3, the light-emitting element 201 of the red sub-pixel R of the third area AA3 is connected to the same pixel driving circuit 101 as the light-emitting element 201 of the red sub-pixel R of the second area AA2, the light-emitting element 201 of the green sub-pixel G of the third area AA3 is connected to the same pixel driving circuit 101 as the light-emitting element 201 of the green sub-pixel G of the second area AA2, and the light-emitting element 201 of the blue sub-pixel B of the third area AA3 is connected to the same pixel driving circuit 101 as the light-emitting element 201 of the blue sub-pixel B of the second area AA2.

[0090] Overall, adjacent pixel units are still controlled by the same pixel driving circuit 101, can still maintain the same working state, and can still ensure a certain display effect. Figure 8 The solution in also achieves the purpose of removing the pixel driving circuit 101 in the third area AA3 and controlling the driving by the pixel driving circuit 101 in the second area AA2, which can also achieve the purpose of improving the infrared light transmittance.

[0091] Fig. 9 Another display panel structure diagram provided by an embodiment of the present application. In some embodiments, in the same pixel unit in the third area AA3, the distances between the light emitting elements 201 of sub-pixels of different colors and the corresponding pixel driving circuits 101 connected to the second area AA2 are the same.

[0092] like Fig. 9As shown, after the light-emitting element 201 in the third area AA3 is connected to the pixel driving circuit 101 in the second area AA2, the length of the wire is significantly increased. Furthermore, the greater the distance between the light-emitting elements 201 of different color sub-pixels and the corresponding pixel driving circuit 101 connected to the second area AA2, the greater the length of the wire, and the greater the voltage drop of the driving signal emitted by the pixel driving circuit 101. Since there are differences in the control driving signals received by the light-emitting element 201, the light-emitting element 201 cannot display accurately, for example, it cannot display grayscale correctly, which may cause abnormal display effect of the display panel. In the case where the length of the wire is significantly increased, the effect of the abnormality will be further amplified. To this end, the embodiment of the present application can also make the distance between the light-emitting elements 201 of different color sub-pixels and the corresponding pixel driving circuit 101 connected to the second area AA2 in the same pixel unit of the third area AA3 the same. For example Fig. 9 The light-emitting elements 201 labeled b1 to b12 and the pixel driving circuits 101 labeled a1 to a6 are schematically shown, so that b1 and b7 are electrically connected to a1, b2 and b8 are electrically connected to a2, b3 and b9 are electrically connected to a3, b4 and b10 are electrically connected to a4, b5 and b11 are electrically connected to a5, and b6 and b12 are electrically connected to a6. Therefore, the distance between the light-emitting element 201 corresponding to the red sub-pixel and the pixel driving circuit 101 is a, and the distance between the light-emitting element 201 corresponding to the green and blue sub-pixels and the pixel driving circuit 101 can also be a or close to a. This can indirectly help to make the wire lengths connecting the light-emitting elements 201 of different color sub-pixels to the pixel driving circuit 101 the same, thereby making the voltage drop generated by the control driving signal consistent, which is beneficial to improving the display effect of the display panel. It should be noted that Fig. 9 The diagram is merely a concise and intuitive schematic diagram for the sake of intuitiveness and drawing convenience. In the actual process of preparing the display panel, the arrangement of the light-emitting elements 201 will be relatively complicated, but the principle of maintaining equal distances will suffice.

[0093] Fig.10 A schematic diagram of another display panel structure provided in an embodiment of the present application. In some other implementations, if for some reason it is not possible to ensure that the distances between the light-emitting elements 201 of sub-pixels of different colors and the pixel driving circuits 101 connected to the corresponding pixel in the second area AA2 in the same pixel unit of the third area AA3 are the same, a winding method can be used to make the lengths of the light-emitting elements 201 of sub-pixels of different colors and the wires of the pixel driving circuits 101 connected thereto the same.

[0094] Borrow Figure 6, the distance between the light-emitting element 201 corresponding to the red sub-pixel and the pixel driving circuit 101 connected thereto in the third area AA3 is slightly smaller than the distance between the light-emitting element 201 corresponding to the green sub-pixel and the pixel driving circuit 101 connected thereto, and the distance between the light-emitting element 201 corresponding to the green sub-pixel and the pixel driving circuit 101 connected thereto is slightly smaller than the distance between the light-emitting element 201 corresponding to the blue sub-pixel and the pixel driving circuit 101 connected thereto. In this case, the Fig.10 In the scheme, the wires corresponding to the red sub-pixels (transparent wires 102) and the green sub-pixels located in the third area AA3 are detoured to different degrees, thereby increasing the actual length of the wires, so as to achieve the purpose of having the same actual length of the wires corresponding to the sub-pixels of different colors in the same pixel unit.

[0095] Fig.11 A schematic diagram of another display panel structure provided in an embodiment of the present application. In some embodiments, the light-emitting element layer 200 includes a cathode layer 202. The cathode layer 202 is provided with a third hollow structure 2021. The vertical projection of the gap between adjacent light-emitting elements 201 at the position where the infrared photosensitive element 600 is located on the substrate 000 at least partially overlaps with the vertical projection of the third hollow structure 2021 on the substrate 000.

[0096] like Fig.11 As shown, in order to realize the light emission of the light emitting element 201, the light emitting element layer 200 may further include a cathode layer 202. Because it is generally a whole surface structure, although it is also a light-transmitting structure, its infrared light transmittance is still relatively low.

[0097] To this end, the embodiment of the present application may further provide a third hollow structure 2021 on the cathode layer 202, that is, the cathode layer 202 is removed at the location of the infrared photosensitive element 600, so as to avoid the influence of the cathode layer 202 on the infrared light and improve the infrared light transmittance at the location of the infrared photosensitive element 600. The third hollow structure 2021 is provided in the embodiment of the present application, not to destroy the integrity of the cathode layer 202, but only to provide the third hollow structure 2021 in a partial area, and a complete conductor structure can still be formed at the location where the third hollow structure 2021 is not provided, so as to form a cathode layer 202 with integrity.

[0098] Fig.12 Another schematic diagram of a display panel structure provided by an embodiment of the present application. In some embodiments, at the location of the infrared photosensitive element 600, the driving circuit layer 100 includes a laser shielding pattern layer 800. In a direction perpendicular to the substrate 000, the laser shielding pattern layer 800 overlaps with the cathode layer 202.

[0099] like Fig.12 As shown, the concept of the laser shielding pattern layer 800 is a pattern layer used to shield laser light. Fig.11 In the corresponding embodiment, in order to eliminate the influence of the cathode layer 202 on the infrared light, a third hollow structure 2021 is provided on the cathode layer 202. As for the solution of forming the third hollow structure 2021, it is possible to adopt Fig.12 The scheme in Fig.12 As shown, a laser shielding pattern layer 800 can be set on the side of the cathode layer 202 facing the substrate 000. At the position where the laser shielding pattern layer 800 exists, the laser light cannot pass through the laser shielding pattern layer 800, and thus cannot act on the cathode layer 202. At the position where the laser shielding pattern layer 800 is not set, the laser light irradiates the cathode layer 202, and the prepared cathode layer 202 is removed under the action of the laser light, forming a third hollow structure 2021.

[0100] In the above structure, it can be understood that the laser shielding pattern layer 800 only needs to prevent the laser light from irradiating the cathode layer 202, so the location of the film layer is not limited, and it can be located at any position in the display panel that can shield the laser light irradiating the cathode layer 202. Fig.12 The laser shielding pattern layer 800 is only schematically disposed at a possible position.

[0101] Continue reading Fig.12 In some embodiments, the driving circuit layer 100 includes a channel light shielding layer 900 of the pixel driving circuit 101. The laser shielding pattern layer 800 is disposed in the same layer as the channel light shielding layer 900.

[0102] The channel light shielding layer 900 is used to shield the channel layer of the thin film transistor in the pixel driving circuit 101. The channel layer is made of semiconductor materials, which can not only change its conductive properties under the action of voltage, but also change its conductive properties under the action of light. Therefore, if the channel layer in the display panel is irradiated by light, it is very likely that the pixel driving circuit 101 will send an error signal, which will cause the light-emitting element 201 to not emit light as ideally, causing the display panel to display abnormally. For this reason, a channel light shielding layer 900 is provided in the relevant scheme to shield the channel layer, prevent light from irradiating the channel layer, and improve the characteristics of the display panel. The channel light shielding layer 900 can generally be referred to as M0.

[0103] The material of the light shielding layer can be, for example, black resin. After research, it is found that the material of the light shielding layer can generally play a good shielding role for laser light. Therefore, the laser shielding pattern layer 800 in the embodiment of the present application can be arranged at the same layer as the channel light shielding layer 900. Fig.12As shown, in the same preparation process, both the channel light shielding layer 900 and the laser shielding pattern layer 800 are prepared. Therefore, compared with the additional provision of a laser shielding pattern layer 800, this solution can effectively reduce the number of film layers of the display panel, which is conducive to reducing the thickness of the display panel.

[0104] Fig.13 Another schematic diagram of a display panel structure provided in an embodiment of the present application. In some embodiments, the light-emitting element layer 200 further includes an anode layer 203, a pixel defining layer 204, and a light-emitting functional layer 205. The anode layer 203 includes a plurality of anodes 2031. The pixel defining layer 204 is located on the side of the anode layer 203 facing away from the substrate 000. The pixel defining layer 204 is provided with a plurality of pixel openings. The pixel opening exposes the anode 2031. The light-emitting functional layer 205 is located in the pixel opening and on the pixel defining layer 204. The cathode layer 202 is located on the side of the pixel defining layer 204 facing away from the substrate 000. The light-emitting element layer 200 at the corresponding position of the pixel opening forms a light-emitting element 201.

[0105] A cathode suppression pattern layer 801 is further disposed between the cathode layer 202 and the pixel defining layer 204. The vertical projection of the gap between adjacent light emitting elements 201 at the position of the infrared sensing element 600 on the substrate 000 at least partially overlaps with the vertical projection of the cathode suppression pattern layer 801 on the substrate 000.

[0106] In order to form the third hollow structure 2021, the embodiment of the present application can also adopt another scheme to prepare the cathode layer 202. Specifically, the cathode suppression pattern layer 801 means a pattern film layer that can suppress the growth of the cathode layer 202. In the process of preparing the cathode layer 202, evaporation, sputtering and the like may be used, and the cathode layer 202 gradually forms a specific film thickness on the surface of the display panel from less to more, and finally forms, and this process is called growth. At the position where the cathode suppression pattern layer 801 is located, due to the repulsive effect of the cathode suppression pattern layer 801, the cathode layer 202 cannot grow on the surface of the cathode suppression pattern layer 801, and the cathode suppression pattern layer 801 at least partially overlaps with the vertical projection of the infrared photosensitive element 600. Therefore, after the cathode layer 202 is prepared, the third hollow structure 2021 can be formed at the position of the infrared photosensitive element 600, so as to achieve the purpose of improving the infrared light transmittance at the position where the infrared photosensitive element 600 is located. The process of preparing the cathode layer 202 by using the material of the cathode suppression pattern layer 801 can be called a CPM (Cathode pattern material) process. The material of the cathode suppression pattern layer 801 can be a high-fluorine compound. It should be noted that based on the working principle of the cathode suppression pattern layer 801, it is set at the location where the third hollow structure 2021 is located, and Fig.13The structure is only illustrated in the film layer of the display panel that has been prepared for illustration. However, in the actual preparation process, after the third hollow structure 2021 is prepared, the cathode suppression pattern layer 801 can be removed without retaining the cathode suppression pattern layer 801. In other words, the cathode suppression pattern layer 801 may not exist in the prepared display panel. For similar reasons, Fig.13 The third hollow structure 2021 is also indicated at the location of the cathode suppression pattern layer 801.

[0107] Fig.14 A schematic diagram of another display panel structure provided in an embodiment of the present application. Fig.14 At the same time, a schematic diagram of the display panel structure of the first area AA1, the second area AA2 and the third area AA3 is shown. Fig.14 The structures of the second area AA2 and the third area AA3 have been described in detail in the above embodiments. For the first area AA1, its structure is different from that of the second area AA2 and the third area AA3 in that the pixel driving circuit 101 provided in the first area AA1 is used to control the light-emitting element 201 of the first area AA1, while the pixel driving circuit provided in the second area AA2 is partially used to control the pixel driving circuit 201 of the second area AA2, and the other part is used to control the pixel driving circuit of the third area AA3. Fig.14 The pixel driving circuit 101 of the second area AA2 is also exemplarily connected to the light emitting element 201 of the second area AA2 and the light emitting element 201 of the third area AA3, but this is only a possible implementation and is not intended to be limiting. Fig.14 On this basis, it should be noted that the embodiment of the present application is limited by the drawing size, and the size of the infrared sensing element 600 is relatively small, and it only overlaps with the vertical projection of one light-emitting element 201, but in actual scenarios, the size of the infrared sensing element 600 may be larger, which does not conflict with the principle of the embodiment of the present application.

[0108] Fig.15 A schematic diagram of the structure of a display device provided in an embodiment of the present application, wherein the display device includes a display panel according to any one of the above display panel embodiments.

[0109] Fig.15 The display panel is shown as 1000. The display device provided in the embodiment of the present application includes the display panel in the above embodiment, and thus can also achieve the same or at least similar technical effects as the above display panel embodiment, which will not be described in detail here.

[0110] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0111] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display panel, characterized in that: include: substrate; A driving circuit layer, a light emitting element layer, a thin film encapsulation layer and a black matrix are located on the substrate; the driving circuit layer is located between the substrate and the light emitting element layer; The thin film encapsulation layer is located on a side of the light emitting element layer away from the substrate; The black matrix is ​​located on the side of the thin film encapsulation layer away from the substrate; the driving circuit layer includes a plurality of pixel driving circuits; the light emitting element layer includes a plurality of light emitting elements arranged in an array; The vertical projection of the black matrix on the substrate is located within the vertical projection of the gap between adjacent light-emitting elements on the substrate; A color resist layer located on the thin film encapsulation layer and the black matrix; An infrared photosensitive element located on a side of the substrate away from the driving circuit layer; Wherein, the black matrix is ​​an infrared light-transmitting layer; The color resist layer is provided with a first hollow structure, and a vertical projection of a gap between adjacent light-emitting elements at a location where the infrared photosensitive element is located on the substrate at least partially overlaps with a vertical projection of the first hollow structure on the substrate.

2. The display panel according to claim 1, characterized in that: The black matrix has a light transmittance of more than 70% in the infrared band, and a light absorbance of more than 2 / μm in the visible light band.

3. The display panel according to claim 1, characterized in that: The black matrix includes a substrate and a black doped dye.

4. The display panel according to claim 1, wherein: The doping content of the black doping dye is 10% to 20%.

5. The display panel according to claim 1, characterized in that: The thickness of the black matrix is ​​in the range of 1 to 3 μm.

6. The display panel according to claim 1, characterized in that: The display area of ​​the display panel includes a first area, a second area and a third area; the infrared photosensitive element is located in the third area; the second area is located between at least part of the first area and the third area; in a direction perpendicular to the substrate, the pixel driving circuit has no overlap with the third area; The light emitting element in the third area is electrically connected to the pixel driving circuit in the second area.

7. The display panel according to claim 6, characterized in that: The driving circuit layer further includes a plurality of transparent wires; the transparent wires electrically connect the pixel driving circuit in the second area with the light emitting element in the third area.

8. The display panel according to claim 7, characterized in that: At least a portion of the transparent conductive lines are located in different layers; in a direction perpendicular to the substrate, the transparent conductive lines located in different layers at least partially overlap.

9. The display panel according to claim 6, characterized in that: At least part of the inorganic insulating layer in the driving circuit layer is provided with a second hollow structure in the third area.

10. The display panel according to claim 6, characterized in that: The display panel includes a plurality of pixel units, and the pixel unit includes a plurality of sub-pixels; In the same pixel unit of the second zone, the light-emitting elements of two adjacent sub-pixels of the same color are electrically connected to the same pixel driving circuit; in the same pixel unit of the third zone, the light-emitting elements of two adjacent sub-pixels of the same color are electrically connected to the same pixel driving circuit of the second zone.

11. The display panel according to claim 10, characterized in that: In the same pixel unit of the second area, anodes of two light emitting elements connected to the same pixel driving circuit are electrically connected via a transparent wire; In the same pixel unit of the third area, anodes of two light emitting elements connected to the same pixel driving circuit are electrically connected via a transparent wire.

12. The display panel according to claim 6, characterized in that: The display panel includes a plurality of pixel units, each of which includes a plurality of sub-pixels; in the adjacent pixel units in the second area and the third area, the light-emitting elements of the sub-pixels in the third area and the light-emitting elements of the sub-pixels of the same color in the second area are connected to the same pixel driving circuit.

13. The display panel according to any one of claims 9 to 12, characterized in that: In the same pixel unit in the third area, the distances between the light emitting elements of sub-pixels of different colors and the corresponding pixel driving circuits connected in the second area are the same.

14. The display panel according to claim 1, characterized in that: The light-emitting element layer includes a cathode layer; the cathode layer is provided with a third hollow structure; the vertical projection of the gap between the light-emitting elements adjacent to the infrared sensitive element at the position of the infrared sensitive element on the substrate at least partially overlaps with the vertical projection of the third hollow structure on the substrate.

15. The display panel according to claim 14, characterized in that: At the location of the infrared photosensitive element, the driving circuit layer includes a laser shielding pattern layer; in a direction perpendicular to the substrate, the laser shielding pattern layer overlaps with the cathode layer.

16. The display panel according to claim 15, characterized in that: The driving circuit layer includes a channel light shielding layer of a pixel driving circuit; the laser shielding pattern layer is arranged on the same layer as the channel light shielding layer.

17. The display panel according to claim 14, characterized in that: The light-emitting element layer further comprises an anode layer, a pixel defining layer and a light-emitting function layer; the anode layer comprises a plurality of anodes; the pixel defining layer is located on a side of the anode layer away from the substrate; the pixel defining layer is provided with a plurality of pixel openings; The pixel opening exposes the anode; the light-emitting functional layer is located in the pixel opening and on the pixel defining layer; The cathode layer is located on a side of the pixel defining layer away from the substrate; the light emitting element layer at a position corresponding to the pixel opening forms the light emitting element; A cathode suppression pattern layer is also provided between the cathode layer and the pixel defining layer; the vertical projection of the gap between the adjacent light-emitting elements at the position where the infrared sensitive element is located on the substrate at least partially overlaps with the vertical projection of the cathode suppression pattern layer on the substrate.

18. A display device, characterized in that: A display panel comprising any one of claims 1-17.

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