Display panel and display device

Abstract

The present application discloses a display panel and a display device, relating to the field of display technology, comprising: a substrate; an array layer located on one side of the substrate; a light-emitting device layer comprising a plurality of light-emitting devices located on the side of the array layer facing away from the substrate; an encapsulation layer located on the side of the light-emitting device layer facing away from the substrate; a fingerprint recognition component comprising a plurality of fingerprint recognition units, each located between the substrate and the encapsulation layer in a direction perpendicular to the substrate; and a convex mirror structure located on the side of the fingerprint recognition unit facing away from the substrate, the convex mirror structure protruding toward the side facing away from the substrate, and the refractive index of the material of at least one film layer covering the convex mirror structure being smaller than the refractive index of the convex mirror structure, and the orthographic projection of the convex mirror structure on the substrate at least partially overlapping with the orthographic projection of the fingerprint recognition unit on the substrate. The present application can effectively improve the accuracy of fingerprint recognition.

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 continuous development of display technology, display panel manufacturing technology has also become mature. Existing display panels mainly include organic light emitting display panels (OLED), liquid crystal display panels (LCD), plasma display panels (PDP), etc. As a self-luminous display device, the organic light emitting display device does not require an independent light source. Therefore, the organic light emitting display device can operate at a low voltage, is light and thin, and provides high-quality characteristics such as a wide viewing angle, high contrast, and fast response. Therefore, as the next generation of display devices, the organic light emitting display device has attracted attention. Organic light-emitting diodes (OLED) can be used as a light source for display devices and lighting devices. They have low energy consumption, high resolution, fast response, and other excellent optoelectronic properties, and have gradually become the mainstream technology of OLED displays.

[0003] In the existing technology, the fingerprint recognition function is integrated into the OLED display panel. Usually, the fingerprint recognition unit is integrated into the back of the display panel in an external manner to realize the local under-screen fingerprint recognition function; in this way, it is difficult to realize large-area fingerprint recognition. If large-area fingerprint recognition is to be realized, the production cost of the display panel will be further increased; therefore, it is urgent to improve the current situation in which OLED display panels in the existing technology are difficult to realize large-area fingerprint recognition. Summary of the Invention

[0004] In view of this, the present application provides a display panel and a display device, which can realize full-screen fingerprint recognition by setting a fingerprint recognition unit and a convex mirror structure, and can effectively improve the accuracy of fingerprint recognition.

[0005] In order to solve the above technical problems, this application has the following technical solutions:

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

[0007] substrate;

[0008] an array layer, located on one side of the substrate;

[0009] a light-emitting device layer, comprising a plurality of light-emitting devices, and located on a side of the array layer facing away from the substrate;

[0010] an encapsulation layer, located on a side of the light-emitting device layer facing away from the substrate;

[0011] A fingerprint recognition component includes a plurality of fingerprint recognition units, and the fingerprint recognition units are located between the substrate and the packaging layer along a direction perpendicular to the substrate;

[0012] The convex mirror structure is located on the side of the fingerprint recognition unit facing away from the substrate. The convex mirror structure bulges toward the side facing away from the substrate, and the refractive index of at least one layer of film material covering the convex mirror structure is smaller than the refractive index of the convex mirror structure. The orthographic projection of the convex mirror structure on the substrate at least partially overlaps with the orthographic projection of the fingerprint recognition unit on the substrate.

[0013] In a second aspect, the present application also provides a display device, including a display panel, which is the display panel provided by the present application.

[0014] Compared with the prior art, the display panel and display device provided by the present invention achieve at least the following beneficial effects:

[0015] The display panel and display device provided in the present application realize full-screen fingerprint recognition by integrating a fingerprint recognition unit, and a convex mirror structure is also provided between the fingerprint recognition unit and the light-emitting surface of the display panel. The refractive index of the material of at least one layer of the film layer covering the convex mirror structure is smaller than the refractive index of the material of the convex mirror structure itself. In this way, the convex mirror structure can deflect light so that the light passing through the convex mirror structure is gathered and directed toward the fingerprint recognition unit, and the orthographic projection of the convex mirror structure on the substrate at least partially overlaps with the orthographic projection of the fingerprint recognition unit on the substrate. In this way, the light gathered by the convex mirror structure can be perceived by the fingerprint recognition unit as much as possible, thereby improving the recognition accuracy of the fingerprint recognition unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 FIG2 is a schematic diagram of a structure of a display panel provided in an embodiment of the present application;

[0018] Figure 2 Shown Figure 1 A cross-sectional view of the display panel provided by the embodiment shown is along the line AA';

[0019] Figure 3 Shown Figure 2 A partial schematic diagram of area B in a display panel provided by the illustrated embodiment;

[0020] Figure 4The figure shows a schematic structural diagram of a fingerprint recognition unit provided in an embodiment of the present application;

[0021] Figure 5 Shown is a structural schematic diagram of an array layer provided in an embodiment of the present application;

[0022] Figure 6 FIG. 1 is another structural schematic diagram of a display panel provided in an embodiment of the present application;

[0023] Figure 7 FIG. 1 is another structural schematic diagram of a display panel provided in an embodiment of the present application;

[0024] Figure 8 Shown is a structural schematic diagram of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] For example, certain terms are used in the specification and claims to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in their functionality. Throughout the specification and claims, the term "including" is an open-ended term and should be interpreted as meaning "including, but not limited to." "Substantially" means that within an acceptable range of error, a person skilled in the art can solve the technical problem and substantially achieve the technical effect. Furthermore, the term "coupled" encompasses any direct and indirect electrical coupling means. Therefore, if a first device is described as coupled to a second device, this means that the first device can be directly electrically coupled to the second device or indirectly electrically coupled to the second device via other devices or coupling means. The following description of preferred embodiments of the present application is intended to illustrate the general principles of the present application and is not intended to limit the scope of the present application. The scope of protection of the present application shall be determined by the appended claims. The similarities between the various embodiments will not be detailed here.

[0026] The following is a detailed description with reference to the accompanying drawings and specific embodiments.

[0027] Figure 1 FIG. 1 is a schematic diagram showing a structure of a display panel provided in an embodiment of the present application. Figure 2 Shown Figure 1 A cross-sectional view of the display panel along the line AA' provided in the embodiment shown is shown in FIG. Figure 1 and Figure 2 As shown, the present application provides a display panel 100, including:

[0028] substrate 10;

[0029] The array layer 20 is located on one side of the substrate 10;

[0030] The light emitting device layer 30 includes a plurality of light emitting devices 40 and is located on a side of the array layer 20 facing away from the substrate 10 ;

[0031] The encapsulation layer 50 is located on a side of the light-emitting device layer 30 facing away from the substrate 10;

[0032] The fingerprint recognition component 60 includes a plurality of fingerprint recognition units 61 , and the fingerprint recognition units 61 are located between the substrate 10 and the encapsulation layer 50 along a direction D1 perpendicular to the substrate;

[0033] The convex mirror structure 70 is located on the side of the fingerprint identification unit 61 facing away from the substrate 10. The convex mirror structure 70 protrudes toward the side facing away from the substrate 10, and the refractive index of at least one layer of film material covering the convex mirror structure 70 is smaller than the refractive index of the convex mirror structure 70. The orthographic projection of the convex mirror structure 70 on the substrate 10 at least partially overlaps with the orthographic projection of the fingerprint identification unit 61 on the substrate 10.

[0034] For more details, please refer to Figure 1 and Figure 2 As shown, the display panel 100 in this embodiment includes a stacked substrate 10, a buffer layer 80, an array layer 20, a light-emitting device layer 30 and an encapsulation layer 50, wherein the substrate 10 can be a flexible substrate 10, which can be transparent, translucent or opaque; the buffer layer 80 is located on one side of the substrate 10, covering the entire surface of the substrate 10; the array layer 20 is located on one side of the buffer layer 80, and the array layer 20 includes a plurality of thin film transistors; the light-emitting device layer 30 is located on one side of the array layer 20, and the light-emitting device layer 30 includes a plurality of light-emitting devices 40, each light-emitting device 40 corresponds to a thin film transistor, and the light-emitting device 40 is electrically connected to the thin film transistor, and the thin film transistor is used to control the lighting of the light-emitting device 40; the encapsulation layer 50 is provided with a plurality of light-emitting devices 40, wherein the light-emitting device 40 corresponds to a thin film transistor, and the light-emitting device 40 is electrically connected to the thin film transistor, and the thin film transistor is used to control the lighting of the light-emitting device 40; Layer 50 covers the light-emitting device layer 30, and the encapsulation layer 50 is formed by alternating stacking of organic layers and inorganic layers (as shown in the figure); further, in this embodiment, a fingerprint recognition component 60 is provided, and the fingerprint recognition component 60 includes a plurality of fingerprint recognition units 61. Along the direction D1 perpendicular to the substrate, the fingerprint recognition unit 61 is integrated between the substrate 10 and the encapsulation layer 50, and along the direction parallel to the substrate 10, the fingerprint recognition unit 61 is integrated between adjacent light-emitting devices 40; in this embodiment, the fingerprint recognition unit 61 is integrated into the display panel 100, which can achieve a large-area fingerprint recognition effect, and the fingerprint recognition unit is arranged between adjacent light-emitting devices 40, does not occupy the space of the display panel 100, and can save space.

[0035] Furthermore, the optical under-screen fingerprint recognition method adopted in this embodiment is to use the display panel 100 to illuminate the finger, and then the light reflected by the finger passes through the display panel 100 and is sensed by the fingerprint recognition unit 61 integrated in the display panel 100, and then compared and identified; in the existing display panel 100, the light will be blocked, refracted or reflected in the process of passing through the display panel 100, making it difficult to form a clear image on the fingerprint recognition unit 61; and in this embodiment, a convex mirror structure 70 is further provided between the fingerprint recognition unit 61 and the light-emitting surface of the display panel 100, and the convex mirror structure 70 protrudes toward the side away from the substrate 10, and the refractive index of at least one layer of the film layer material covering the convex mirror structure 70 is smaller than that of the convex mirror structure 70 itself The refractive index of the material, in this way, the convex mirror structure 70 can deflect the light, so that the light passing through the convex mirror structure 70 is gathered and emitted to the fingerprint recognition unit 61, and the orthographic projection of the convex mirror structure 70 on the substrate 10 and the orthographic projection of the fingerprint recognition unit 61 on the substrate 10 at least partially overlap, so that the light gathered by the convex mirror structure 70 can be perceived by the fingerprint recognition unit 61 as much as possible, thereby improving the recognition accuracy of the fingerprint recognition unit 61; optionally, the orthographic projection of the convex mirror structure 70 on the substrate 10 overlaps with the orthographic projection of the fingerprint recognition unit 61 on the substrate 10, so that the maximum amount of light gathered by the convex mirror structure 70 is perceived by the fingerprint recognition unit 61, which can indirectly reduce the space occupied by the fingerprint recognition unit 61.

[0036] It should be noted that Figure 1 The illustrated embodiment merely schematically illustrates a structure in which a display panel 100 is provided with a plurality of pixel units, each pixel unit including a plurality of sub-pixels 150 , and does not represent the actual number of pixel units or the actual size of the display panel 100 ; Figure 2 The illustrated embodiment only schematically illustrates a plurality of film layer structures provided in the display panel 100 , which does not represent the actual thickness of each film layer.

[0037] Figure 3 Shown Figure 2 A partial schematic diagram of area B in the display panel provided in the embodiment shown, please refer to Figure 3 As shown, in an optional embodiment of the present application, the encapsulation layer 50 includes an organic layer 51 and an inorganic layer 52 arranged in a stacked manner. Along a direction D1 perpendicular to the substrate, at least part of the organic layer 51 and at least part of the inorganic layer 52 cover the convex mirror structure 70, and the refractive index of the organic layer 51 covering the convex mirror structure 70 is less than the refractive index of the convex mirror structure 70.

[0038] It should be noted that Figure 3The illustrated embodiment only schematically shows a structural diagram of the stacked arrangement of the organic layers 51 and the inorganic layers 52 in the encapsulation layer 50 , which does not represent the actual sizes of the organic layers 51 and the inorganic layers 52 .

[0039] For more details, please refer to Figure 3 As shown, in this embodiment, the encapsulation layer 50 is formed by an organic layer 51 and an inorganic layer 52 that are staggered and stacked, at least a portion of the organic layer 51 covers the convex mirror structure 70, and at least a portion of the inorganic layer 52 covers the convex mirror structure 70, wherein the thickness of the organic layer 51 covering the convex mirror structure 70 is greater than the thickness of the inorganic layer 52, and the refractive index of the material of the organic layer 51 covering the convex mirror structure 70 is less than the refractive index of the material of the convex mirror structure 70 itself, so that light passes through the organic layer 51 and is emitted toward the convex mirror structure 70, and the light is deflected, forming a light gathering effect, so that more light is emitted toward the fingerprint recognition unit 61; in addition, by limiting the refractive index of the material of the organic layer 51, the light can be deflected more effectively to form a gathering effect.

[0040] Please continue to refer to Figure 2 As shown, in an optional embodiment of the present application, it further includes: an insulating layer 110, a planarization layer 120 and a pixel definition layer 130 stacked in sequence, the insulating layer 110 and the planarization layer 120 are located on the array layer 20, and the pixel definition layer 130 is located on the light-emitting device layer 30;

[0041] The convex structure is prepared on the same layer as any one of the insulating layer 110 , the planarization layer 120 , the pixel definition layer 130 or the encapsulation layer 50 .

[0042] It should be noted that Figure 2 The illustrated embodiment only schematically illustrates the relative positional relationship of the film layers and does not represent the actual size.

[0043] For more details, please refer to Figure 2As shown, this embodiment includes an array substrate, a light-emitting device layer 30 and an encapsulation layer 50 stacked in sequence. An insulating layer 110 and a planarization layer 120 are provided in the array layer 20. The insulating layer 110 is located on the side of the planarization layer 120 close to the substrate 10. Optionally, the insulating layer 110 is provided with a metal layer S. The planarization layer 120 is used to flatten the side of the array substrate away from the substrate 10. The side of the planarization layer 120 away from the substrate 10 is provided with a light-emitting device layer 30. The light-emitting device layer 30 includes a pixel definition layer 130 and a pixel definition layer 130. 30 defines a plurality of openings, and light-emitting devices 40 are arranged in the openings; wherein, the convex mirror structure 70 is prepared on the same layer as the insulating layer 110, the planarization layer 120, the pixel definition layer 130 or any one of the encapsulation layer 50, and the convex mirror structure 70 can be provided with more film layers, and the convex mirror structure 70 can be flexibly manufactured according to actual needs during manufacturing; it should also be noted that the convex mirror structure 70 needs to be located on the side of the fingerprint recognition unit 61 away from the substrate 10, so as to ensure that the light reflected by the finger is gathered by the convex mirror structure 70 and then directed to the fingerprint recognition unit 61.

[0044] Please continue to refer to Figure 2 As shown, in an optional embodiment of the present application, the convex mirror structure 70 and the pixel definition layer 130 are in the same layer and are prepared using the same process.

[0045] For more details, please refer to Figure 2 As shown, in this embodiment, the convex mirror structure 70 and the pixel definition layer 130 are in the same layer and are prepared using the same process; on the one hand, when the convex mirror structure 70 and the pixel definition layer 130 are prepared in the same layer, the fingerprint identification unit 61 on the side of the convex mirror structure 70 close to the substrate 10 can be produced in a larger spatial range; on the other hand, when the convex mirror structure 70 and the pixel definition layer 130 are prepared in the same layer, the same mask, namely a halftone mask, can be used. In this way, the convex mirror structure 70 and the pixel definition layer 130 can be produced at the same time, and the production process can be saved.

[0046] Figure 4 The figure shows a schematic diagram of the structure of the fingerprint recognition unit provided in the embodiment of the present application. Figure 4 As shown, combined with Figure 2 As shown, in an optional embodiment of the present application, along a direction D1 perpendicular to the substrate, the array layer 20 includes multiple metal layers S spaced apart;

[0047] The light emitting device 40 further includes an anode 41 and a cathode 43, and a light emitting layer 42 located between the anode 41 and the cathode 43. The cathode 43 is located on the side of the anode 41 facing away from the substrate 10.

[0048] The fingerprint recognition unit 61 includes a first electrode 61 and a second electrode 62 that are stacked, and the second electrode 62 is located on a side of the first electrode 61 that is away from the substrate 10;

[0049] The first electrode 61 is prepared on the same layer as any metal layer S in the array layer 20, and the second electrode 62 is prepared on the same layer as any metal layer S in the array layer 20, any layer of the anode 41 or the cathode 43, and the metal layer S where the first electrode 61 is located is different from the metal layer S where the second electrode 62 is located.

[0050] For more details, please refer to Figure 4 As shown, combined with Figure 2 As shown, the light-emitting device 40 in this embodiment includes an anode 41 and a cathode 43, and a light-emitting layer 42 located between the anode 41 and the cathode 43, and the cathode 43 is located on the side of the anode 41 away from the substrate 10; the fingerprint recognition unit 61 in this embodiment includes a first electrode 61 and a second electrode 62 stacked, and the second electrode 62 is located on the side of the first electrode 61 away from the substrate 10; the array layer 20 includes a plurality of metal layers S spaced apart, the first electrode 61 is prepared on the same layer as any metal layer S in the array layer 20, and the second electrode 62 is prepared on the same layer as any metal layer S in the array layer 20; optionally, the array layer 2 The metal layer S included in 0 can be a gate, a source and drain 21, a semiconductor layer, and an electrode for connecting electrodes and forming a capacitor in the driving circuit; since the first electrode 61 and the second electrode 62 are arranged in different layers, the metal layer S where the first electrode 61 is located and the metal layer S where the second electrode 62 is located are arranged in different layers; in this way, the first electrode 61 and the second electrode 62 are both prepared in the same layer as the metal layer S in the array layer 20, which can effectively save the process; in addition, the second electrode 62 and either the anode 41 or the cathode 43 of the light-emitting device 40 are prepared in the same layer, so that while realizing the function of the fingerprint recognition unit 61, it can also effectively save the process.

[0051] Figure 5 The diagram shows a schematic diagram of the structure of the array layer provided in the embodiment of the present application. Figure 5 As shown, combined with Figure 2 As shown, in an optional embodiment of the present application, the array layer 20 includes a source and drain electrode 21 that are spaced apart and located on the same layer, and the array layer 20 includes a first metal layer 22 and a second metal layer 23 that are spaced apart, and the first metal layer 22 is located on a side of the second metal layer 23 facing away from the substrate 10;

[0052] The anode 41 of the light emitting device 40 is electrically connected to the second metal layer 23 through the first metal layer 22 . The second metal layer 23 is in the same layer as the source and drain electrodes 21 of the array layer 20 . The first electrode 61 is in the same layer as the first metal layer 22 .

[0053] For more details, please refer to Figure 5As shown, combined with Figure 2 As shown, the array layer 20 in this embodiment includes a metal layer S which is a source and drain electrode 21, a first metal layer 22, and a second metal layer 23. The source and drain electrodes are located in the same layer and are spaced apart. The first metal layer 22 and the second metal layer 23 are spaced apart along a direction D1 perpendicular to the substrate. The first metal layer 22 is located on the side of the second metal layer 23 away from the substrate 10. The anode 41 of the light-emitting device 40 is electrically connected to the second metal layer 23 through the first metal layer 22. The second metal layer 23 is in the same layer as the source and drain electrodes 21 in the array layer 20, and the first electrode 61 is in the same layer as the first metal layer 22. It can also be understood that, along the direction D1 perpendicular to the substrate, the distance between the first metal layer 22 and the light-emitting device 40 is the shortest. When the convex mirror structure 70 is prepared in the same layer as the pixel definition layer 130, the first electrode 61 is prepared in the same layer as the first metal layer 22, so that the distance between the fingerprint recognition unit 61 and the convex mirror structure 70 is the shortest. The fingerprint recognition unit 61 can sense more light, and the first electrode 61 is prepared in the same layer as the first metal layer 22, which can save process.

[0054] Please continue to refer to Figure 2 As shown, in an optional embodiment of the present application, the second electrode 62 is in the same layer as the anode 41 of the light-emitting device 40 .

[0055] For more details, please refer to Figure 2 As shown, in this embodiment, when the material of the second electrode 62 is ITO, the second electrode 62 and the anode 41 of the light-emitting device 40 are prepared in the same layer, which can effectively save the manufacturing process.

[0056] Please continue to refer to Figure 2 As shown, in an optional embodiment of the present application, the second electrode 62 is a transparent electrode.

[0057] For more details, please refer to Figure 2 As shown, in this embodiment, the second electrode 62 is a transparent electrode, so it does not affect the fingerprint recognition unit 61 from sensing light. That is, after the light is reflected by the finger, it is emitted toward the convex mirror structure 70. After the light is gathered by the convex mirror structure 70, it is emitted toward the fingerprint recognition unit 61. In order to avoid the second electrode 62 affecting the fingerprint recognition unit 61 from sensing light, the second electrode 62 is set to a transparent electrode; optionally, the second electrode 62 in this embodiment is ITO.

[0058] Please continue to refer to Figure 4 As shown, combined with Figure 2As shown, in an optional embodiment of the present application, the fingerprint recognition unit 61 also includes a photodiode 90, which is located between the first electrode 61 and the second electrode 62; the photodiode 90 includes a first amorphous silicon film 91 and a second amorphous silicon film 93, and a third amorphous silicon film 92 located between the first amorphous silicon film 91 and the second amorphous silicon film 93, the first amorphous silicon film 91 is electrically connected to the second electrode 62, and the second amorphous silicon film 93 is electrically connected to the first electrode 61.

[0059] For more details, please refer to Figure 4 As shown, combined with Figure 2 As shown, in this embodiment, the fingerprint recognition unit 61 includes a photodiode 90, which is located between the first electrode 61 and the second electrode 62 of the fingerprint recognition unit 61. The photodiode 90 includes a first amorphous silicon film 91, a second amorphous silicon film 93, and a third amorphous silicon film 92 located between the first amorphous silicon film 91 and the second amorphous silicon film 93. The first amorphous silicon film 91 is electrically connected to the second electrode 62, and the second amorphous silicon film 93 is electrically connected to the first electrode 61. The second amorphous silicon film 93 is Na-Si, the first amorphous silicon film 91 is Pa-Si, and the third amorphous silicon film 92 is ia-Si. When light reflected from the fingerprint hits the third amorphous silicon film 92, the third amorphous silicon film 92 generates photogenerated carriers, which form a built-in electric field through the first amorphous silicon film 91 and the second amorphous silicon film 93, forming a photogenerated current. After the fingerprint is pressed, a fingerprint image with alternating light and dark is formed. In this way, the fingerprint recognition function of the fingerprint recognition unit 61 is realized.

[0060] Please continue to refer to Figure 4 As shown, combined with Figure 2 As shown, in an optional embodiment of the present application, the first amorphous silicon film 91 is in contact with and electrically connected to the second electrode 62 , and the second amorphous silicon film 93 is in contact with and electrically connected to the first electrode 61 .

[0061] For more details, please refer to Figure 4 As shown, combined with Figure 2 As shown, in this embodiment, the first amorphous silicon film 91 is in contact and electrically connected with the second electrode 62, and the second amorphous silicon film 93 is in contact and electrically connected with the first electrode 61; it can also be understood that the first amorphous silicon film 91 and the second electrode 62 are stacked, and the second amorphous silicon film 93 and the first electrode 61 are stacked; in this way, the photodiode 90, the first electrode 61 and the second electrode 62 are made at the same time as part of the film layer in the display panel 100, without the need for external plug-in, and the full-screen fingerprint recognition function can be realized.

[0062] Please continue to refer to Figure 4 As shown, combined with Figure 2As shown, in an optional embodiment of the present application, the first amorphous silicon film 91 is a P-type amorphous silicon film, and the second amorphous silicon film 93 is an N-type amorphous silicon film, or; the first amorphous silicon film 91 is an N-type amorphous silicon film, and the second amorphous silicon film 93 is a P-type amorphous silicon film.

[0063] For more details, please refer to Figure 4 As shown, combined with Figure 2 As shown, in this embodiment, the first amorphous silicon film 91 is an N-type amorphous silicon film or a P-type amorphous silicon film, and the second amorphous silicon film 93 is an N-type amorphous silicon film or a P-type amorphous silicon film; in this way, the recognition function of the fingerprint recognition unit 61 can be realized.

[0064] Figure 6 FIG. 1 is another structural diagram of a display panel provided in an embodiment of the present application. Please refer to FIG. Figure 6 As shown, in an optional embodiment of the present application, it also includes: a shading matrix layer 140, located on the side of the encapsulation layer 50 away from the substrate 10, the shading matrix layer 140 includes a plurality of first openings K1 and at least one second opening K2; along the direction D1 perpendicular to the substrate, the first opening K1 at least partially overlaps with the light-emitting device 40, and the at least one second opening K2 at least partially overlaps with the fingerprint recognition unit 61.

[0065] For more details, please refer to Figure 6 As shown, the display panel 100 in this embodiment also includes a shading matrix layer 140, which is located on the side of the encapsulation layer 50 away from the substrate 10. The shading matrix layer 140 includes a plurality of first openings K1 and at least one second opening K2. The first opening K1 at least partially overlaps with the light-emitting device 40, that is, the first opening K1 is arranged corresponding to the light-emitting device 40; at least one second opening K2 at least partially overlaps with the fingerprint recognition unit 61, that is, at least one second opening K2 is arranged corresponding to the fingerprint recognition unit 61; wherein, the first opening K1 and the second opening K2 are both used to pass light, and part of the light emitted by the light-emitting unit passes through the first opening K1 toward the light-emitting surface of the display panel 100, and part of the light reflected by the fingerprint is emitted toward the fingerprint recognition unit 61; in this way, the fingerprint recognition function of the display panel 100 is realized.

[0066] Please continue to refer to Figure 6 As shown, combined with Figure 1 As shown, in an optional embodiment of the present application, a color resist layer is provided on the side of the light-shielding matrix layer 140 away from the substrate 10, and the color resist layer includes a red color resist R, a green color resist G, and a blue color resist B, wherein, along a direction D1 perpendicular to the substrate, the first opening K1 and the red color resist R, the green color resist G, and the blue color resist B are at least partially overlapped.

[0067] For more details, please refer to Figure 6As shown, combined with Figure 1 As shown, in this embodiment, a color resist layer is provided on the side of the light-shielding matrix layer 140 facing away from the substrate 10, and the color resist layer includes a red color resist R, a green color resist G, and a blue color resist B. In particular, along a direction D1 perpendicular to the substrate, at least a portion of the first opening K1 overlaps with the red color resist R, at least a portion of the first opening K1 overlaps with the green color resist G, and at least a portion of the first opening K1 overlaps with the blue color resist B. In this way, the display panel 100 displays in color.

[0068] Please continue to refer to Figure 6 As shown, combined with Figure 1 As shown, in an optional embodiment of the present application, a color resist layer is provided on the side of the light-shielding matrix layer 140 away from the substrate 10, and the color resist layer includes a blue color resist B, wherein, along a direction D1 perpendicular to the substrate, the second opening K2 and the blue color resist B at least partially overlap.

[0069] For more details, please refer to Figure 6 As shown, combined with Figure 1 As shown, in this embodiment, a color resist layer is provided on the side of the light-shielding matrix layer 140 facing away from the substrate 10, and the color resist layer includes a blue color resist B. In the direction D1 perpendicular to the substrate, the second opening K2 at least partially overlaps with the blue color resist B, so that light reflected by the fingerprint is directed to the blue color resist B and then to the fingerprint recognition unit 61. In this way, infrared light can be shielded from penetrating the finger and affecting the imaging effect of fingerprint recognition.

[0070] Please continue to refer to Figure 1 As shown, in an optional embodiment of the present application, the shape of the orthographic projection of the first opening K1 on the substrate 10 is any one of a circle, an ellipse, a square, a rectangle, a rounded rectangle, a rhombus or a polygon.

[0071] For more details, please refer to Figure 1 As shown, in this embodiment, along the direction D1 perpendicular to the substrate, the shape of the first opening K1 is any one of a circle, an ellipse, a square, a rectangle, a rounded rectangle, a diamond or a polygon; this embodiment does not limit the shape of the first opening K1, and the above can realize the function of the first opening K1 for placing the light-emitting device 40.

[0072] Please continue to refer to Figure 1 As shown, in an optional embodiment of the present application, the shape of the orthographic projection of the second opening K2 on the substrate 10 is either circular or elliptical.

[0073] For more details, please refer to Figure 1As shown, in this embodiment, along the direction D1 perpendicular to the substrate, the shape of the second opening K2 is one of a circle or an ellipse, wherein, along the direction D1 perpendicular to the substrate, the convex mirror structure 70 is a circle or an ellipse, so that as much light as possible is gathered through the convex mirror structure 70 and then emitted to the fingerprint recognition unit 61. In this way, the shape of the positive projection of the second opening K2 on the substrate 10 is a circle or an ellipse, and the blue color resistance B set in the second opening K2 is also a circle or an ellipse, so that as much light as possible is sensed by the fingerprint recognition unit 61, further reducing the space occupied by the fingerprint recognition unit 61.

[0074] Figure 7 FIG. 1 is another structural diagram of a display panel provided in an embodiment of the present application. Please refer to FIG. Figure 7 As shown, in an optional embodiment of the present application, it further includes: a plurality of sub-pixels 150 arranged along the row direction S1 and the column direction S2, and a fingerprint recognition unit 61 is provided between at least two adjacent sub-pixels 150 along the row direction S1 and / or the column direction S2.

[0075] For more details, please refer to Figure 7 As shown, the display panel 100 in this embodiment includes a plurality of sub-pixels 150, and the sub-pixels 150 are arranged along the row direction S1 or along the column direction S2, wherein a fingerprint recognition unit 61 is arranged between adjacent sub-pixels 150 along the row direction S1 and / or the column direction S2. In this way, the fingerprint recognition unit 61 does not need to occupy other space of the display panel 100, and can be arranged between adjacent sub-pixels 150. While realizing the integration of the fingerprint recognition unit 61 with the display panel 100, the space occupied by the fingerprint recognition unit 61 can be saved.

[0076] Please continue to refer to Figure 6 As shown, in an optional embodiment of the present application, the light-shielding matrix layer 140 is stacked with the encapsulation layer 50 , and the light-shielding matrix layer 140 includes a plurality of black matrices 141 , which define the shapes of the first opening K1 and the second opening K2 .

[0077] For more details, please refer to Figure 6 As shown, in this embodiment, the shading matrix layer 140 and the encapsulation layer 50 are stacked, and the shading matrix layer 140 is located on the side of the encapsulation layer 50 away from the substrate 10, wherein the shading matrix layer 140 includes a plurality of black matrices 141, and the black matrix 141 is used to define the shape of the first opening K1 and the second opening K2; on the one hand, the light emitted by the light-emitting device 40 can be emitted toward the light-emitting surface of the display panel 100 through the first opening K1; on the other hand, the light reflected by the finger is emitted toward the fingerprint recognition unit 61 through the second opening K2, so that the light is sensed by the fingerprint recognition unit 61, thereby realizing the fingerprint recognition function of the display panel 100.

[0078] Based on the same inventive concept, Figure 8 The figure shows a schematic diagram of the structure of the display device provided in the embodiment of the present application. Figure 8 As shown, the present application further provides a display device 200, which includes a display panel 100. The display panel 100 is the display panel 100 provided by any of the above embodiments of the present application, and the repeated parts are not repeated here.

[0079] It should be noted that the embodiment of the display device 200 provided in the embodiments of the present application can be referred to the embodiment of the display panel 100 described above. The display device 200 provided in the present application takes an organic light emitting diode (OLED) display device as an example, and the repeated parts are not repeated here. The display device 200 provided in the present application can be any product or component with real-world functions, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigation system, or the like.

[0080] Through the above embodiments, it can be seen that the beneficial effects of this application are:

[0081] The display panel and display device provided in the present application realize full-screen fingerprint recognition by integrating a fingerprint recognition unit, and a convex mirror structure is further provided between the fingerprint recognition unit and the light-emitting surface of the display panel. The refractive index of the material of at least one film layer covering the convex mirror structure is smaller than the refractive index of the material of the convex mirror structure itself. In this way, the convex mirror structure can deflect light so that the light passing through the convex mirror structure is gathered and emitted toward the fingerprint recognition unit, and the orthographic projection of the convex mirror structure on the substrate at least partially overlaps with the orthographic projection of the fingerprint recognition unit on the substrate. In this way, the light gathered by the convex mirror structure can be perceived by the fingerprint recognition unit as much as possible, thereby improving the recognition accuracy of the fingerprint recognition unit.

[0082] The above description shows and describes several preferred embodiments of the present application. However, as previously mentioned, it should be understood that the present application is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present application can be used in various other combinations, modifications, and environments and can be modified within the scope of the inventive concept described herein through the above teachings or through techniques or knowledge in the relevant field. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present application are intended to be protected by the claims appended hereto.

Claims

1. A display panel, characterized in that: include: substrate; an array layer, located on one side of the substrate; a light-emitting device layer, comprising a plurality of light-emitting devices, and located on a side of the array layer facing away from the substrate; an encapsulation layer, located on a side of the light-emitting device layer facing away from the substrate; A fingerprint recognition component includes a plurality of fingerprint recognition units, each located between the substrate and the encapsulation layer in a direction perpendicular to the substrate; the fingerprint recognition unit includes a first electrode and a second electrode stacked together, the second electrode being located on a side of the first electrode facing away from the substrate; the fingerprint recognition unit also includes a photodiode located between the first electrode and the second electrode; the second electrode covering the photodiode in a direction perpendicular to the substrate, the second electrode being a transparent electrode; A convex mirror structure is located on the side of the fingerprint recognition unit facing away from the substrate, the convex mirror structure protrudes toward the side facing away from the substrate, and the refractive index of at least one layer of film material covering the convex mirror structure is smaller than the refractive index of the convex mirror structure, and the orthographic projection of the convex mirror structure on the substrate at least partially overlaps with the orthographic projection of the fingerprint recognition unit on the substrate.

2. The display panel according to claim 1, wherein: The encapsulation layer includes an organic layer and an inorganic layer stacked together. Along a direction perpendicular to the substrate, at least part of the organic layer and at least part of the inorganic layer cover the convex mirror structure, and the refractive index of the organic layer covering the convex mirror structure is smaller than the refractive index of the convex mirror structure.

3. The display panel according to claim 1, wherein: Also includes: An insulating layer, a planarization layer, and a pixel definition layer are sequentially stacked, wherein the insulating layer and the planarization layer are located on the array layer, and the pixel definition layer is located on the light-emitting device layer; The convex mirror structure is prepared on the same layer as any one of the insulating layer, the planarization layer, the pixel definition layer or the encapsulation layer.

4. The display panel according to claim 3, wherein: The convex mirror structure is in the same layer as the pixel definition layer and is prepared using the same process.

5. The display panel according to claim 1, wherein: Along a direction perpendicular to the substrate, the array layer includes multiple metal layers spaced apart; The light emitting device further comprises an anode and a cathode, and a light emitting layer located between the anode and the cathode, wherein the cathode is located on a side of the anode facing away from the substrate; The first electrode is prepared on the same layer as any of the metal layers in the array layer, the second electrode is prepared on the same layer as any of the metal layers in the array layer, the anode or the cathode, and the metal layer where the first electrode is located is different from the metal layer where the second electrode is located.

6. The display panel according to claim 5, wherein: The array layer includes source and drain electrodes that are spaced apart and located in the same layer, and the array layer includes a first metal layer and a second metal layer that are spaced apart, wherein the first metal layer is located on a side of the second metal layer facing away from the substrate; The anode of the light-emitting device is electrically connected to the second metal layer through the first metal layer, and the second metal layer is in the same layer as the source and drain of the array layer; The first electrode is in the same layer as the first metal layer.

7. The display panel according to claim 5, wherein: The second electrode is in the same layer as the anode of the light emitting device.

8. The display panel according to claim 5, wherein: The photodiode includes a first amorphous silicon film and a second amorphous silicon film, and a third amorphous silicon film located between the first and second amorphous silicon films. The first amorphous silicon film is electrically connected to the second electrode, and the second amorphous silicon film is electrically connected to the first electrode.

9. The display panel according to claim 8, wherein: The first amorphous silicon film is electrically connected to the second electrode contact, and the second amorphous silicon film is electrically connected to the first electrode contact.

10. The display panel according to claim 8, wherein The first amorphous silicon film is a P-type amorphous silicon film, and the second amorphous silicon film is an N-type amorphous silicon film, or the first amorphous silicon film is an N-type amorphous silicon film, and the second amorphous silicon film is a P-type amorphous silicon film.

11. The display panel according to claim 1, wherein Also includes: a light-shielding matrix layer, located on a side of the encapsulation layer facing away from the substrate, the light-shielding matrix layer comprising a plurality of first openings and at least one second opening; Along a direction perpendicular to the substrate, the first opening at least partially overlaps with the light-emitting device, and at least one of the second openings at least partially overlaps with the fingerprint recognition unit.

12. The display panel according to claim 11, wherein: A color resist layer is arranged on a side of the light-shielding matrix layer away from the substrate, the color resist layer including red color resist, green color resist, and blue color resist, wherein along a direction perpendicular to the substrate, the first opening and the red color resist, the green color resist, and the blue color resist are at least partially overlapped.

13. The display panel according to claim 11, wherein: A color resist layer is provided on a side of the light-shielding matrix layer away from the substrate, the color resist layer including a blue color resist, wherein in a direction perpendicular to the plane where the display panel is located, the second opening and the blue color resist at least partially overlap.

14. The display panel according to claim 11, wherein: The orthographic projection of the first opening on the substrate is in any one of a circle, an ellipse, a square, a rectangle, a rounded rectangle, a rhombus or a polygon.

15. The display panel according to claim 11, wherein: The orthographic projection of the second opening on the substrate is in a shape of a circle or an ellipse.

16. The display panel according to claim 11, wherein: Also includes: A plurality of sub-pixels are arranged along a row direction and a column direction, and the fingerprint recognition unit is provided between at least two adjacent sub-pixels along the row direction and / or the column direction.

17. The display panel according to claim 11, wherein: The light-shielding matrix layer is stacked with the encapsulation layer. The light-shielding matrix layer includes a plurality of black matrices. The black matrices define shapes of the first opening and the second opening.

18. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 17.

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