Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a substrate; the pixel definition layer is located on one side of the substrate, a plurality of pixel openings and at least one non-pixel opening are defined by the pixel definition layer, and the projection area of at least one pixel opening on the substrate is different from the projection area of any non-pixel opening on the substrate; a plurality of sub-pixels located in the pixel openings; and a plurality of identification units located in the non-pixel openings. According to the technical scheme, the fingerprint identification precision and the signal-to-noise ratio can be improved.

Description

Technical Field

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

[0002] With the development of display technology, display panels with fingerprint recognition function have become mainstream. At present, full-screen recognition can be achieved by integrating a fingerprint recognition module (e.g., an organic photoelectric sensor) into a display panel. However, the recognition accuracy of existing fingerprint recognition modules is low. Summary of the invention

[0003] In order to solve the above problems, embodiments of the present application provide a display panel and a display device.

[0004] In a first aspect, an embodiment of the present application provides a display panel, comprising: a substrate; a pixel definition layer, located on one side of the substrate, the pixel definition layer enclosing a plurality of pixel openings and a plurality of non-pixel openings, the projection area of ​​at least one pixel opening on the substrate being different from the projection area of ​​any non-pixel opening on the substrate; a plurality of sub-pixels, located at the pixel openings; and a plurality of identification units, located at the non-pixel openings.

[0005] In combination with the first aspect, the display panel also includes: a collimation structure, which is located on the side of the pixel definition layer away from the substrate, the collimation structure is provided with at least one collimation opening, the collimation opening corresponds to the non-pixel opening, and the orthographic projection of the collimation opening on the substrate surrounds the orthographic projection of the non-pixel opening on the substrate; preferably, the display panel also includes a first inorganic encapsulation layer, the first inorganic encapsulation layer is located on the side of the pixel definition layer away from the substrate; the collimation structure is located on the side of the first inorganic encapsulation layer away from the substrate; or, the collimation structure is located between the first inorganic encapsulation layer and the pixel definition layer; preferably, the display panel also includes an organic encapsulation layer and a second inorganic encapsulation layer stacked in sequence along a direction away from the substrate, the organic encapsulation layer is located on the side of the first inorganic encapsulation layer away from the substrate; the collimation structure is located between the first inorganic encapsulation layer and the pixel definition layer, or, the collimation structure is located between the first inorganic encapsulation layer and the organic encapsulation layer, or, the collimation structure is located between the organic encapsulation layer and the second inorganic encapsulation layer, or, the collimation structure is located on the side of the second inorganic encapsulation layer away from the substrate.

[0006] In combination with the first aspect, the material of the collimation structure includes at least one of a metal material and an organic material; preferably, the material of the collimation structure includes molybdenum; preferably, the collimation structure includes at least one collimation ring, the orthographic projection of the collimation ring on the substrate surrounds the orthographic projection of the non-pixel opening on the substrate; preferably, in a direction perpendicular to the substrate, the cross-sectional shape of the collimation ring is rectangular or arched; preferably, in a direction perpendicular to the substrate, the height of the collimation ring is 0.5μm to 3μm.

[0007] In combination with the first aspect, the display panel further includes a touch layer located on the side of the pixel definition layer away from the substrate; the display panel further includes a color filter layer located on the side of the touch layer away from the substrate; the color filter layer includes a barrier rib structure that encloses at least one first opening and a plurality of second openings. At least a part of the orthographic projection of the recognition unit on the substrate is located within the orthographic projection of the first opening on the substrate, and at least a part of the orthographic projection of the sub-pixels on the substrate is located within the orthographic projection of the second opening on the substrate; the color filter layer further includes a plurality of color resist units located within the second openings, and the orthographic projection of the color resist units on the substrate covers the orthographic projection of the sub-pixels on the substrate; preferably, the plurality of color resist units include a first color resist unit, a second color resist unit, and a third color resist unit, the plurality of sub-pixels include a first sub-pixel, a second sub-pixel, and a third sub-pixel, the orthographic projection of the first color resist unit on the substrate covers the orthographic projection of the first sub-pixel on the substrate, the orthographic projection of the second color resist unit on the substrate covers the orthographic projection of the second sub-pixel on the substrate, and the orthographic projection of the third color resist unit on the substrate covers the orthographic projection of the third sub-pixel on the substrate. By providing the color filter layer, the light emission crosstalk between different light-emitting units can be reduced, and the color saturation of the light emission can be improved.

[0008] In combination with the first aspect, the display panel further includes a collimating structure located on the side of the pixel definition layer away from the substrate. The collimating structure is provided with at least one collimating opening, and the orthographic projection of the collimating opening on the substrate at least partially overlaps with the orthographic projection of the first opening on the substrate; preferably, the orthographic projection of the collimating opening on the substrate is located within the orthographic projection of the first opening on the substrate; alternatively, the orthographic projection of the collimating opening on the substrate completely overlaps with the orthographic projection of the first opening on the substrate; preferably, the distance between the edge line of the orthographic projection of the collimating opening on the substrate and the edge line of the orthographic projection of the non-pixel opening on the substrate is greater than or equal to 2 μm and less than or equal to 5 μm. Set within this range, it can not only block stray light but also receive more light reflected by the finger, improving the signal-to-noise ratio and recognition accuracy of fingerprint recognition.

[0009] In combination with the first aspect, the preparation process temperature of the barrier rib structure and the color resist unit is less than or equal to 90 °C; preferably, the preparation process temperature is 80 °C, 85 °C, 90 °C; preferably, the material of the barrier rib structure includes a black material; preferably, the material of the barrier rib structure includes a black resin; preferably, the material of the color resist unit includes an organic material; preferably, the material of the color resist unit at least includes resin, pigment, and initiator.

[0010] In combination with the first aspect, the recognition unit includes a first electrode layer, a photoelectric conversion layer, and a second electrode layer stacked in sequence in the direction away from the substrate, and the sub-pixels include an anode layer, a light-emitting functional layer, and a cathode stacked in sequence in the direction away from the substrate. The first electrode layer and the anode layer are arranged on the same layer, and the second electrode layer and the cathode layer are arranged on the same layer.

[0011] In combination with the first aspect, the multiple sub-pixels include a first sub-pixel, and at least two first sub-pixels are disposed on different sides of the recognition unit; preferably, the multiple sub-pixels further include a second sub-pixel and a third sub-pixel, and the number ratio of the first sub-pixel, the second sub-pixel, the third sub-pixel, and the recognition unit is 2:1:1:2; preferably, the first sub-pixel includes a green sub-pixel, the second sub-pixel includes a red sub-pixel, and the third sub-pixel includes a blue sub-pixel; preferably, the projected area of the pixel opening of one first sub-pixel on the substrate is smaller than the projected area of the pixel opening of one second sub-pixel or one third sub-pixel on the substrate. In this way, it can be ensured that the recognition unit receives more reflected green light, improving the sensitivity of fingerprint recognition, and it can reduce the received reflected red light and blue light, improving the signal-to-noise ratio of fingerprint recognition.

[0012] In combination with the first aspect, the projected area of at least one pixel opening on the substrate is larger than the projected area of any non-pixel opening on the substrate. In this way, the probability of receiving stray light can be reduced, and light crosstalk and ambient light interference can be reduced.

[0013] In a second aspect, an embodiment of the present application provides a display device including the above-mentioned display panel. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the pixel arrangement of the display panel provided by an embodiment of the present application.

[0015] Figure 2 It is a schematic cross-sectional structure diagram of the display panel provided by an embodiment of the present application.

[0016] Figure 3 It is a schematic cross-sectional structure diagram of the display panel provided by another embodiment of the present application.

[0017] Figure 4 It is a schematic cross-sectional structure diagram of the display panel provided by another embodiment of the present application.

[0018] Figure 5 It is a schematic cross-sectional structure diagram of the display panel provided by another embodiment of the present application.

[0019] Figure 6 It is a schematic cross-sectional structure diagram of the display panel provided by another embodiment of the present application.

[0020] Figure 7 It is a schematic cross-sectional structure diagram of the display panel provided by another embodiment of the present application.

[0021] Figure 8 It is a schematic cross-sectional structure diagram of the display panel provided by another embodiment of the present application.

[0022] Figure 9It is a schematic structural diagram of a display device provided by an embodiment of the present application. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0024] Organic Light-Emitting Diode (OLED) devices can operate at low voltages and have a series of advantages such as high brightness, full viewing angle, fast response speed, and flexible display. They have become a highly competitive and promising next-generation display technology. Integrating a fingerprint recognition module, such as an Organic Photodiode (OPD), into the display panel to achieve full-screen recognition is an important research direction at present. The OLED device has a three-layer structure of an anode, a light-emitting layer, and a cathode. Similar to the OLED device, the OPD also has a three-layer structure, namely, a first electrode, a photosensitive layer, and a second electrode. Therefore, the OPD can share a common layer with the OLED, and the OPD can be prepared by evaporation, which simplifies the preparation process of the OPD.

[0025] The working principle of the OPD is to convert the optical signal into an electrical signal after receiving the light reflected by the finger, thereby realizing the fingerprint recognition of the user. After integrating the OPD into the OLED, the light emitted by the OLED may be directly captured by the OPD device without reflection, reducing the accuracy of fingerprint recognition.

[0026] In the face of the above technical problems, an embodiment of the present application provides a display panel, which includes a substrate; a pixel definition layer located on one side of the substrate. The pixel definition layer encloses a plurality of pixel openings and a plurality of non-pixel openings. The projected area of at least one pixel opening on the substrate is different from the projected area of any non-pixel opening on the substrate; a plurality of sub-pixels located in the pixel openings; and a plurality of recognition units located in the non-pixel openings. In the embodiment of the present application, the size of the non-pixel opening where the recognition unit is set is different from the size of the pixel opening where the sub-pixel is set, and the size of the non-pixel opening is smaller than the size of the pixel opening. In this way, the probability of receiving stray light can be reduced, and light crosstalk and ambient light interference can be reduced, improving the accuracy of fingerprint recognition and the signal-to-noise ratio.

[0027] Figure 1 It is a schematic diagram of the pixel arrangement of a display panel provided by an embodiment of the present application. Figure 2 It is a schematic cross-sectional structure diagram of a display panel provided by an embodiment of the present application. Specifically,Figure 2 This is an application Figure 1 The schematic cross-sectional structure diagram of the display panel shown along line AB. As Figure 1 and Figure 2 shown, the display panel includes a substrate 10, a pixel definition layer 20, a plurality of sub-pixels 30, and an identification unit 40.

[0028] In an embodiment of this application, the substrate 10 includes a rigid substrate, for example, a glass substrate; or, the substrate 10 includes a flexible substrate, for example, polyimide (PI), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), etc.

[0029] The pixel definition layer 20 is located on one side of the substrate 10. In an embodiment of this application, the pixel definition layer 20 includes an organic material or an inorganic material, and this application does not limit it. The pixel definition layer 20 encloses a plurality of pixel openings 210 and at least one non-pixel opening 220. The projected area of at least one pixel opening 210 on the substrate 10 is different from the projected area of any non-pixel opening 220 on the substrate 10. Optionally, the projected area of at least one pixel opening 210 on the substrate 10 is larger than the projected area of any non-pixel opening 220 on the substrate 10. In this way, the probability of receiving stray light can be reduced, and light crosstalk and ambient light interference can be reduced, improving the accuracy and signal-to-noise ratio of fingerprint recognition. In Figure 1 it, the shapes of the pixel opening 210 and the non-pixel opening 220 being rectangular are only illustrative. The embodiments of this application do not limit the shapes of the pixel opening 210 and the non-pixel opening 220. Optionally, the pixel opening 210 and the non-pixel opening 220 may include a rectangle, a circle, a rhombus, a trapezoid, an ellipse, a triangle, an irregular shape, etc.

[0030] In an embodiment of this application, the sub-pixels 30 are located in the pixel openings 210, and the identification unit 40 is located in the non-pixel openings 220. Optionally, the plurality of sub-pixels 30 includes a first sub-pixel 31, a second sub-pixel 32, and a third sub-pixel 33. Optionally, the first sub-pixel 31 includes a green sub-pixel, the second sub-pixel 32 includes a red sub-pixel, and the third sub-pixel 33 includes a blue sub-pixel.

[0031] In an embodiment of the present application, the sub-pixel 30 includes an OLED, and the recognition unit 40 includes an OPD. The recognition unit 40 includes a first electrode layer 410, a photoelectric conversion layer 420, and a second electrode layer 430 stacked in sequence along the direction away from the substrate 10. The sub-pixel 30 includes an anode layer 310, a light-emitting functional layer 320, and a cathode layer 330 stacked in sequence along the direction away from the substrate 10. Among them, the first electrode layer 410 and the anode layer 310 are arranged on the same layer, and the materials of the first electrode layer 410 and the anode layer 310 are the same. The second electrode layer 430 and the cathode layer 330 are arranged on the same layer, and the materials of the second electrode layer 430 and the cathode layer 330 are the same. In an embodiment of the present application, the second electrode layer 430 and the cathode layer 330 may be arranged at intervals or connected to each other. When preparing the second electrode layer 430 (or the cathode layer 330), a whole-layer electrode layer may be formed, and the electrode layers in different regions respectively constitute the second electrode layer 430 and the cathode layer 330. In an embodiment of the present application, the first sub-pixel 31 includes a first light-emitting functional layer 321 (i.e., a green light-emitting functional layer), the second sub-pixel 32 includes a second light-emitting functional layer (i.e., a red light-emitting functional layer), and the third sub-pixel 33 includes a third light-emitting functional layer (i.e., a blue light-emitting functional layer).

[0032] The display panel further includes a collimation structure 50, and the collimation structure 50 is located on the side of the pixel definition layer 20 away from the substrate 10. The collimation structure 50 is provided with at least one collimation opening 501, the collimation opening 501 corresponds to the non-pixel opening 220, and the orthographic projection of the collimation opening 501 on the substrate 10 surrounds the orthographic projection of the non-pixel opening 220 on the substrate. In an embodiment of the present application, the material of the collimation structure 50 includes at least one of a metal material and an organic material. Preferably, the material of the collimation structure 50 includes molybdenum, a black matrix, etc., and preferably molybdenum. As Figure 1 and Figure 2 shown, the collimation structure 50 includes at least one collimation ring 510, and the orthographic projection of the collimation ring 510 on the substrate 10 surrounds the orthographic projection of the non-pixel opening 220 on the substrate 10. Optionally, in the direction perpendicular to the substrate 10, the cross-sectional shape of the collimation ring 510 is rectangular or arched. The closer the collimation ring 510 is to a rectangle, the better the collimation effect. Optionally, in the direction perpendicular to the substrate 10, the height of the collimation ring 510 is 0.5 μm to 3 μm. Exemplarily, the height of the collimation ring 510 is 0.5 μm, 0.8 μm, 1 μm, 1.5 μm, 2 μm, 2.5 μm, 3 μm. In an embodiment of the present application, the collimation structure 50 can block the light that is not reflected by the finger, so as to prevent the light that is not reflected by the finger from being directly captured by the recognition unit, and improve the accuracy and signal-to-noise ratio of fingerprint recognition.

[0033] As Figure 2As shown, the display panel further includes a first inorganic encapsulation layer 610, and the first inorganic encapsulation layer 610 is located on the side of the pixel definition layer 20 away from the substrate 10. The collimation structure 50 is located on the side of the first inorganic encapsulation layer 610 away from the substrate 10. That is, the collimation structure 50 is formed on the side of the first inorganic encapsulation layer 610 away from the substrate 10. At this time, the material of the collimation structure 50 can be a metal material or an organic material. If the material of the collimation structure 50 is a metal material, it can be formed by processes such as magnetron sputtering or evaporation. If the material of the collimation structure 50 is an organic material, it can be formed by a photolithography process.

[0034] Optionally, Figure 3 is a schematic cross-sectional structure diagram of a display panel provided by another embodiment of the present application. Figure 3 The display panel shown in Figure 2 differs from the display panel shown in

[0035] Optionally, Figures 4 to 7 are respectively schematic cross-sectional structure diagrams of a display panel provided by an embodiment of the present application. As Figures 4 to 7 shown, the display panel further includes an organic encapsulation layer 620 and a second inorganic encapsulation layer 630 that are sequentially stacked in the direction away from the substrate 10, and the organic encapsulation layer 620 is located on the side of the first inorganic encapsulation layer 610 away from the substrate 10. Optionally, the materials of the first inorganic encapsulation layer 610 and the second inorganic encapsulation layer 630 include at least one of silicon nitride, silicon oxide, and silicon oxynitride. The material of the organic encapsulation layer 620 includes an acrylate polymer. In Figure 4 , the collimation structure 50 is located between the first inorganic encapsulation layer 610 and the pixel definition layer 20. In Figure 5 , the collimation structure 50 is located between the first inorganic encapsulation layer 610 and the organic encapsulation layer 620. In Figure 6 , the collimation structure 50 is located between the organic encapsulation layer 620 and the second inorganic encapsulation layer 630. In Figure 7 , the collimation structure 50 is located on the side of the second inorganic encapsulation layer 630 away from the substrate 10.

[0036] Continue to refer to Figure 2, in the embodiment of the present application, the display panel further includes a touch layer 70. The touch layer 70 is located on the side of the pixel definition layer 20 (or the first inorganic encapsulation layer 610) away from the substrate 10. The touch layer 70 includes touch electrodes, and the touch signals of the touch electrodes change due to a touch action, so as to determine the touch position. Optionally, the touch layer 70 includes a capacitive touch structure, a resistive touch structure, which is not limited in the embodiment of the present application. The touch layer 70 is a conventional design in the art and will not be elaborated here.

[0037] The inventors have found through research that the light wavelengths that the recognition unit 40 (for example, OPD) can receive are mainly concentrated in the green light wavelength region, that is, the recognition unit 40 is more sensitive to green light. Using green light as the light source for fingerprint recognition has a relatively high signal-to-noise ratio and accuracy. However, since the recognition unit 40 is integrated in the display panel, the recognition unit 40 also has a certain absorption of blue light and red light, which will reduce the sensitivity and accuracy of fingerprint recognition. Therefore, by designing the positional relationship between the sub-pixels and the recognition unit, the absorption of the recognition unit 40 for the green sub-pixels (i.e., the first sub-pixels 31) is enhanced. As Figure 1 shown, at least two first sub-pixels 31 are arranged on different sides of the recognition unit 40. For example, two first sub-pixels 31 are arranged on opposite sides of the recognition unit 40. In the embodiment of the present application, the recognition unit 40 is arranged in the entire area of the display panel. At this time, the number ratio of the first sub-pixels 31, the second sub-pixels 32, the third sub-pixels 33, and the recognition unit 40 is 2:1:1:2. In this way, it can be ensured that the recognition unit 40 receives more reflected green light, improving the sensitivity of fingerprint recognition, and it can reduce the received reflected red light and blue light, improving the signal-to-noise ratio of fingerprint recognition. In the embodiment of the present application, the projected area of the pixel opening 210 of one second sub-pixel 32 on the substrate 10 is the same as the projected area of the pixel opening 210 of one third sub-pixel 33 on the substrate 10. The projected area of the pixel opening 210 of one first sub-pixel 31 on the substrate 10 is smaller than the projected area of the pixel opening 210 of one second sub-pixel 32 or one third sub-pixel 33 on the substrate 10. For example, the projected area of the pixel opening 210 of one first sub-pixel 31 on the substrate 10 is half of the projected area of the pixel opening 210 of one second sub-pixel 32 or one third sub-pixel 33 on the substrate 10. In this way, it can be ensured that the light-emitting areas of the first sub-pixels 31, the second sub-pixels, and the third sub-pixels are basically the same, improving the display uniformity.

[0038] Figure 8 is a schematic cross-sectional structure diagram of a display panel provided by another embodiment of the present application. Figure 8 The shown display panel and Figure 2The difference between the display panel shown is that the display panel further includes a color filter layer 80. The color filter layer 80 is located on the side of the touch layer 70 away from the substrate 10. The color filter layer 80 includes a barrier rib structure 810, and the barrier rib structure 810 encloses at least one first opening 811 and a plurality of second openings 812. At least a part of the positive projection of the recognition unit 40 on the substrate 10 is located within the positive projection of the first opening 811 on the substrate 10, and at least a part of the positive projection of the sub-pixel 30 on the substrate 10 is located within the positive projection of the second opening 812 on the substrate 10. Optionally, the color filter layer 80 further includes a plurality of color resist units 820, and the color resist units 820 are located within the second openings 812. The positive projection of the color resist unit 820 on the substrate 10 covers the positive projection of the sub-pixel 30 on the substrate 10. The color of the color resist unit 820 is the same as the color of the sub-pixel 30. Exemplarily, the plurality of color resist units 820 include a first color resist unit, a second color resist unit, and a third color resist unit. The first color resist unit is a green color resist unit, and the positive projection of the first color resist unit on the substrate 10 covers the positive projection of the first sub-pixel 31 on the substrate 10. The second color resist unit is a red color resist unit, and the positive projection of the second color resist unit on the substrate 10 covers the positive projection of the second sub-pixel 32 on the substrate 10. The third color resist unit is a blue color resist unit, and the positive projection of the third color resist unit on the substrate 10 covers the positive projection of the third sub-pixel 33 on the substrate 10. By providing the color filter layer 80, the light emission crosstalk between different light-emitting units can be reduced, and the color saturation of the emitted light can be improved.

[0039] In the embodiment of the present application, as Figure 8 shown, the collimating structure 50 is provided with at least one collimating opening 501, and the positive projection of the collimating opening 501 on the substrate 10 at least partially overlaps with the positive projection of the first opening 811 on the substrate 10. Optionally, the positive projection of the collimating opening 501 on the substrate 10 is located within the positive projection of the first opening 811 on the substrate 10; or, the positive projection of the collimating opening 501 on the substrate 10 completely overlaps with the positive projection of the first opening 811 on the substrate 10. In this way, through the collimating structure 50 and the barrier rib structure 810, secondary collimation can be achieved, which can better reduce stray light, improve the quality of the reflected light, and improve the recognition accuracy. In the embodiment of the present application, the spacing distance between the edge line of the positive projection of the collimating opening 501 on the substrate 10 and the edge line of the positive projection of the non-pixel opening 220 on the substrate 10 is greater than or equal to 2 μm and less than or equal to 5 μm. Exemplarily, the spacing distance between the edge line of the positive projection of the collimating opening 501 on the substrate 10 and the edge line of the positive projection of the non-pixel opening 220 on the substrate 10 is 2 μm, 3 μm, 4 μm, 5 μm. Setting within this range can not only block stray light but also receive more light reflected by the finger, improving the signal-to-noise ratio and recognition accuracy of fingerprint recognition.

[0040] In the embodiments of the present application, since the OPD has poor high-temperature resistance, when preparing the color film layer 80, the preparation process temperature cannot be too high. Specifically, the preparation process temperature of the barrier structure 810 and the color resist unit 820 is less than or equal to 90°C. Optionally, in the embodiments of the present application, the values of the preparation process temperature are 80°C, 85°C, and 90°C. In the embodiments of the present application, the material of the barrier structure 810 includes a black material. For example, the material of the barrier structure 810 includes a black resin. The material of the color resist unit 820 includes an organic material. For example, the material of the color resist unit 820 at least includes resin, pigment, and initiator.

[0041] Figure 9 is a schematic structural diagram of a display device provided by an embodiment of the present application. As Figure 9 shown, the display device 900 is a product with an image display function. For example, the display device 900 can be used to display static images, such as pictures or photos. The display device 900 can also be used to display dynamic images, such as videos.

[0042] The display device 900 can be a laptop computer, a mobile phone, a handheld or portable computer, a camera, a video camera, an in-vehicle intelligent central control screen, a calculator, a smart watch, a GPS navigator, an electronic photo, an electronic billboard or sign, a projector, etc.

[0043] The display device 900 includes the display panel provided by any of the above embodiments. The display panel can be an organic light-emitting diode display panel or a quantum dot electroluminescent display panel.

[0044] In addition, the display device 900 can also have functions such as taking pictures, recording videos, fingerprint recognition, and face recognition. Correspondingly, the display device 900 also includes at least one functional module for implementing the above functions, such as an under-screen camera, an under-screen fingerprint recognition sensor, etc.

[0045] The basic principles of the present application have been described above in conjunction with specific embodiments. However, it should be noted that the advantages, advantages, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, advantages, effects, etc. are essential for each embodiment of the present application. In addition, the above-disclosed specific details are only for the purposes of illustration and easy understanding, and are not limitations. The above details do not limit the present application to necessarily adopt the above specific details to implement.

[0046] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any way. Words such as "including", "comprising", "having", etc. are open-ended terms that mean "including but not limited to" and can be used interchangeably with each other. The word "or" and "and" used herein refer to the phrase "and / or" and can be used interchangeably with it, unless the context clearly indicates otherwise. The phrase "such as" used herein refers to the phrase "such as but not limited to" and can be used interchangeably with it.

[0047] It should also be noted that in the devices, equipment, and methods of this application, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent solutions of this application.

[0048] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects are very obvious to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

[0049] The above description has been given for purposes of illustration and description. In addition, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions, and sub-combinations thereof.

Claims

1. A display panel, characterized in that: include: substrate; a pixel definition layer, located on one side of the substrate, the pixel definition layer enclosing a plurality of pixel openings and at least one non-pixel opening, wherein a projection area of ​​at least one pixel opening on the substrate is different from a projection area of ​​any non-pixel opening on the substrate; A plurality of sub-pixels are located at the pixel opening; A plurality of identification units are located at the non-pixel openings.

2. The display panel according to claim 1, characterized in that: Also includes: A collimation structure, located on a side of the pixel definition layer away from the substrate, the collimation structure is provided with at least one collimation opening, the collimation opening corresponds to the non-pixel opening, and the orthographic projection of the collimation opening on the substrate surrounds the orthographic projection of the non-pixel opening on the substrate; Preferably, the display panel further comprises a first inorganic encapsulation layer, and the first inorganic encapsulation layer is located on a side of the pixel definition layer away from the substrate; The collimating structure is located on a side of the first inorganic encapsulation layer away from the substrate; or, the collimating structure is located between the first inorganic encapsulation layer and the pixel definition layer; Preferably, the display panel further comprises an organic encapsulation layer and a second inorganic encapsulation layer stacked in sequence in a direction away from the substrate, and the organic encapsulation layer is located on a side of the first inorganic encapsulation layer away from the substrate; the collimation structure is located between the first inorganic encapsulation layer and the pixel definition layer, or, the collimation structure is located between the first inorganic encapsulation layer and the organic encapsulation layer, or, the collimation structure is located between the organic encapsulation layer and the second inorganic encapsulation layer, or, the collimation structure is located on a side of the second inorganic encapsulation layer away from the substrate.

3. The display panel according to claim 2, characterized in that: The material of the alignment structure includes at least one of a metal material and an organic material; Preferably, the material of the collimating structure comprises molybdenum; Preferably, the collimating structure comprises at least one collimating ring, the orthographic projection of the collimating ring on the substrate surrounds the orthographic projection of the non-pixel opening on the substrate; Preferably, in a direction perpendicular to the substrate, the cross-sectional shape of the collimating ring is rectangular or arched; Preferably, in a direction perpendicular to the substrate, the height of the collimating ring is 0.5 μm to 3 μm.

4. The display panel according to any one of claims 1 to 3, characterized in that: It also includes a touch layer, the touch layer is located on a side of the pixel definition layer away from the substrate; The display panel further comprises a color filter layer, and the color filter layer is located on a side of the touch layer away from the substrate; The color filter layer includes a retaining wall structure, the retaining wall structure encloses at least one first opening and a plurality of second openings, at least part of the orthographic projections of the identification units on the substrate are located within the orthographic projections of the first openings on the substrate, and at least part of the orthographic projections of the sub-pixels on the substrate are located within the orthographic projections of the second openings on the substrate; The color filter layer further includes a plurality of color resist units, wherein the color resist units are located in the second openings, and the orthographic projections of the color resist units on the substrate cover the orthographic projections of the sub-pixels on the substrate; Preferably, the multiple color resist units include a first color resist unit, a second color resist unit and a third color resist unit, the multiple sub-pixels include a first sub-pixel, a second sub-pixel and a third sub-pixel, the orthographic projection of the first color resist unit on the substrate covers the orthographic projection of the first sub-pixel on the substrate, the orthographic projection of the second color resist unit on the substrate covers the orthographic projection of the second sub-pixel on the substrate, and the orthographic projection of the third color resist unit on the substrate covers the orthographic projection of the third sub-pixel on the substrate.

5. The display panel according to claim 4, characterized in that: It also includes a collimating structure, which is located on a side of the pixel definition layer away from the substrate, the collimating structure is provided with at least one collimating opening, and the orthographic projection of the collimating opening on the substrate at least partially overlaps with the orthographic projection of the first opening on the substrate; Preferably, the orthographic projection of the collimating opening on the substrate is located within the orthographic projection of the first opening on the substrate; Alternatively, the orthographic projection of the collimating opening on the substrate completely overlaps with the orthographic projection of the first opening on the substrate; Preferably, a spacing distance between an edge line of an orthographic projection of the collimating opening on the substrate and an edge line of an orthographic projection of the non-pixel opening on the substrate is greater than or equal to 2 μm and less than or equal to 5 μm.

6. The display panel according to claim 4, characterized in that: The preparation process temperature of the retaining wall structure and the color resistance unit is less than or equal to 90° C.; Preferably, the preparation process temperature is 80°C, 85°C, or 90°C; Preferably, the material of the retaining wall structure includes black material; Preferably, the material of the retaining wall structure includes black resin; Preferably, the material of the color resist unit includes an organic material; Preferably, the material of the color resist unit includes at least resin, pigment and initiator.

7. The display panel according to claim 4, characterized in that: The identification unit includes a first electrode layer, a photoelectric conversion layer, and a second electrode layer stacked in sequence along a direction away from the substrate; the sub-pixel includes an anode layer, a light-emitting functional layer, and a cathode stacked in sequence along a direction away from the substrate; the first electrode layer and the anode layer are arranged on the same layer, and the second electrode layer and the cathode layer are arranged on the same layer.

8. The display panel according to claim 1, characterized in that: The plurality of sub-pixels include first sub-pixels, and at least two of the first sub-pixels are arranged on different sides of the identification unit; Preferably, the plurality of sub-pixels further include a second sub-pixel and a third sub-pixel, and the number ratio of the first sub-pixel, the second sub-pixel, the third sub-pixel, and the identification unit is 2:1:1:2; Preferably, the first sub-pixel includes a green sub-pixel, the second sub-pixel includes a red sub-pixel, and the third sub-pixel includes a blue sub-pixel; Preferably, a projection area of ​​the pixel opening of one of the first sub-pixels on the substrate is smaller than a projection area of ​​the pixel opening of one of the second sub-pixels or one of the third sub-pixels on the substrate.

9. The display panel according to claim 1, characterized in that: A projection area of ​​at least one of the pixel openings on the substrate is larger than a projection area of ​​any of the non-pixel openings on the substrate.

10. A display device, characterized in that: A display panel comprising any one of claims 1 to 9.

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