CN114613823A - Display panel and display device - Google Patents
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- CN114613823A CN114613823A CN202210222433.6A CN202210222433A CN114613823A CN 114613823 A CN114613823 A CN 114613823A CN 202210222433 A CN202210222433 A CN 202210222433A CN 114613823 A CN114613823 A CN 114613823A
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- 239000000758 substrate Substances 0.000 claims abstract description 104
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000004806 packaging method and process Methods 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 claims description 248
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 58
- 239000002184 metal Substances 0.000 claims description 48
- 239000010408 film Substances 0.000 claims description 37
- 239000010409 thin film Substances 0.000 claims description 34
- 239000011159 matrix material Substances 0.000 claims description 18
- 238000005538 encapsulation Methods 0.000 claims description 16
- 239000012044 organic layer Substances 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 6
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 13
- 230000006870 function Effects 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 235000009537 plain noodles Nutrition 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
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- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
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Abstract
The application discloses display panel and display device relates to and shows technical field, includes: a substrate; the array layer is positioned on one side of the substrate; a light emitting device layer including a plurality of light emitting devices on a side of the array layer facing away from the substrate; the packaging layer is positioned on one side, away from the substrate, of the light-emitting device layer; the fingerprint identification assembly comprises a plurality of fingerprint identification units, and the fingerprint identification units are positioned between the substrate and the packaging layer along the direction vertical to the substrate; the convex mirror structure is located on one side, away from the substrate, of the fingerprint identification unit, the convex mirror structure is protruded towards the side, away from the substrate, of the convex mirror structure, the refractive index of at least one layer of film layer material covering the convex mirror structure is smaller than that of the convex mirror structure, and the orthographic projection of the convex mirror structure on the substrate is at least partially overlapped with that of the fingerprint identification unit on the substrate. According to the fingerprint identification method and device, the accuracy of fingerprint identification can be effectively improved.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
With the continuous development of Display technology, the manufacturing technology of Display panels also tends to mature, and the existing Display panels mainly include Organic Light Emitting Display panels (OLEDs), Liquid Crystal Display panels (LCDs), Plasma Display Panels (PDPs), and the like. The organic light emitting display device as the self light emitting display device does not require a separate light source. Accordingly, 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, organic light emitting display devices have been receiving attention as next generation display devices. Organic Light-Emitting diodes (OLEDs) are used as Light sources for display devices and lighting devices, and have low power consumption, high resolution, fast response, and other excellent photoelectric characteristics, and are becoming the mainstream technology of OLED display.
In the prior art, a fingerprint identification function is integrated in an OLED display panel, and a fingerprint identification unit is integrated on the back of the display panel in a plug-in mode under normal conditions, so that a local under-screen fingerprint identification function is realized; therefore, large-area fingerprint identification is difficult to realize, and the production cost of the display panel is further higher if the large-area fingerprint identification is realized; therefore, it is necessary to improve the current situation that the OLED display panel in the prior art is difficult to realize large-area fingerprint identification.
Disclosure of Invention
In view of this, the application provides a display panel and display device, through the mode that sets up fingerprint identification unit and convex mirror structure, can realize the comprehensive screen fingerprint identification, and can effectual improvement fingerprint identification's precision.
In order to solve the technical problem, the following technical scheme is adopted:
in a first aspect, the present application provides a display panel comprising:
a substrate;
the array layer is positioned on one side of the substrate;
a light emitting device layer including a plurality of light emitting devices on a side of the array layer facing away from the substrate;
the packaging layer is positioned on one side, away from the substrate, of the light-emitting device layer;
the fingerprint identification assembly comprises a plurality of fingerprint identification units, and the fingerprint identification units are positioned between the substrate and the packaging layer along the direction vertical to the substrate;
the convex mirror structure is located on one side, away from the substrate, of the fingerprint identification unit, the convex mirror structure is protruded towards the side, away from the substrate, of the convex mirror structure, the refractive index of at least one layer of film layer material covering the convex mirror structure is smaller than that of the convex mirror structure, and the orthographic projection of the convex mirror structure on the substrate is at least partially overlapped with that of the fingerprint identification unit on the substrate.
In a second aspect, the present application further provides a display device, including a display panel, where the display panel is the display panel provided in the present application.
Compared with the prior art, the display panel and the display device provided by the invention at least realize the following beneficial effects:
the application provides a display panel and display device, display panel and display device that this application provided, mode through integrated fingerprint identification unit, realize comprehensive screen fingerprint identification, and still be provided with the convex lens structure between fingerprint identification unit and display panel play plain noodles, the refracting index that covers at least one deck rete material of convex lens structure is less than the refracting index of convex lens structure self material, so, the convex lens structure can deflect light, make the light that passes the convex lens structure gather together the back directive fingerprint identification unit, and the orthographic projection of convex lens structure on the substrate and the orthographic projection of fingerprint identification unit on the substrate are partial overlap at least, so, make the light after the convex lens structure gathers together can be as much as possible by the perception of fingerprint identification unit, improve the precision of fingerprint identification unit discernment.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
FIG. 2 is a cross-sectional view of the display panel along A-A' of the embodiment of FIG. 1;
FIG. 3 is a partial schematic view of a region B of the display panel provided in the embodiment shown in FIG. 2;
FIG. 4 is a schematic diagram of a fingerprint identification unit according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an array layer according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of a display device according to an embodiment of the present disclosure.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. The description and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, within which a person skilled in the art can solve the technical problem to substantially achieve the technical result. Furthermore, the term "coupled" is intended to encompass any direct or indirect electrical coupling. Thus, if a first device couples to a second device, that connection may be through a direct electrical coupling or through an indirect electrical coupling via other devices and couplings. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims. The same parts between the embodiments are not described in detail.
The following detailed description is to be read in connection with the drawings and the detailed description.
Fig. 1 is a schematic structural diagram of a display panel provided in an embodiment of the present application, and fig. 2 is a cross-sectional view of the display panel provided in the embodiment of fig. 1 along a-a', please refer to fig. 1 and fig. 2, wherein a display panel 100 provided in the present application includes:
a substrate 10;
an array layer 20 on one side of the substrate 10;
a light emitting device layer 30 including a plurality of light emitting devices 40 on a side of the array layer 20 facing away from the substrate 10;
an encapsulation layer 50 on a side of the light emitting device layer 30 facing away from the substrate 10;
a fingerprint identification assembly 60 comprising a plurality of fingerprint identification units 61, the fingerprint identification units 61 being located between the substrate 10 and the encapsulation layer 50 along a direction D1 perpendicular to the substrate;
the convex mirror structure 70 is located on one side of the fingerprint identification unit 61, which is far away from the substrate 10, the convex mirror structure 70 protrudes towards the side, which is far 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 that of the convex mirror structure 70, and the orthographic projection of the convex mirror structure 70 on the substrate 10 is at least partially overlapped with the orthographic projection of the fingerprint identification unit 61 on the substrate 10.
Specifically, as shown in fig. 1 and fig. 2, the display panel 100 of the present embodiment includes a substrate 10, a buffer layer 80, an array layer 20, a light emitting device layer 30, and an encapsulation layer 50, which are stacked, wherein the substrate 10 may be a flexible substrate 10, and may be made of a transparent, semitransparent, or opaque material; the buffer layer 80 is positioned at one side of the substrate 10, covering the entire surface of the substrate 10; the array layer 20 is located at 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, 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, the thin film transistor is used for controlling the light emitting device 40 to be turned on; an encapsulation layer 50 covers the light emitting device layer 30, and the encapsulation layer 50 is formed by alternately stacking organic layers and inorganic layers (not shown in the figure); further, in the present embodiment, a fingerprint identification assembly 60 is provided, the fingerprint identification assembly 60 includes a plurality of fingerprint identification units 61, the fingerprint identification units 61 are integrated between the substrate 10 and the encapsulation layer 50 along the direction D1 perpendicular to the substrate, and the fingerprint identification units 61 are integrated between adjacent light emitting devices 40 along the direction parallel to the substrate 10; in this embodiment, the fingerprint identification unit 61 is integrated on the display panel 100, so that a large-area fingerprint identification effect can be achieved, and other units of the fingerprint are disposed between adjacent light emitting devices 40, so that the space of the display panel 100 is not occupied, and the space can be saved.
Further, the method for identifying the optical underscreen fingerprint adopted in the embodiment is to illuminate a finger by using the display panel 100, and then the light reflected by the finger passes through the display panel 100 and is sensed by the fingerprint identification unit 61 integrated in the display panel 100, so as to perform comparison identification; in the conventional display panel 100, light rays are blocked, refracted or reflected in the process of passing through the display panel 100, so that clear images are not easy to form on the fingerprint identification unit 61; in this embodiment, a convex mirror structure 70 is further disposed between the fingerprint identification unit 61 and the light-emitting surface of the display panel 100, the convex mirror structure 70 protrudes toward a side away from the substrate 10, and the refractive index of at least one layer of film covering the convex mirror structure 70 is smaller than the refractive index of the material of the convex mirror structure 70, so that the convex mirror structure 70 can deflect light, so that the light passing through the convex mirror structure 70 is converged and then emitted to the fingerprint identification unit 61, and the orthographic projection of the convex mirror structure 70 on the substrate 10 is at least partially overlapped with the orthographic projection of the fingerprint identification unit 61 on the substrate 10, so that the light converged by the convex mirror structure 70 can be perceived by the fingerprint identification unit 61 as much as possible, and the identification accuracy of the fingerprint identification unit 61 is improved; optionally, the orthographic projection of the convex mirror structure 70 on the substrate 10 overlaps with the orthographic projection of the fingerprint identification unit 61 on the substrate 10, so that the maximum amount of light gathered by the convex mirror structure 70 is sensed by the fingerprint identification unit 61, and the space occupied by the fingerprint identification unit 61 can be indirectly reduced.
It should be noted that the embodiment shown in fig. 1 only schematically shows a structural schematic that the display panel 100 is provided with a plurality of pixel units, each pixel unit comprises a plurality of sub-pixels 150, wherein the structural schematic does not represent the actual number of pixel units, nor represents the actual size of the display panel 100; the embodiment shown in fig. 2 only schematically illustrates a structure of a plurality of film layers provided in the display panel 100, wherein the actual thickness of each film layer is not represented.
Fig. 3 is a partial schematic view of a region B in the display panel provided in the embodiment shown in fig. 2, please refer to fig. 3, in an alternative embodiment of the present application, the encapsulation layer 50 includes an organic layer 51 and an inorganic layer 52 stacked together, at least a portion of the organic layer 51 and at least a portion of the inorganic layer 52 cover the lenticular structure 70 along a direction D1 perpendicular to the substrate, and a refractive index of the organic layer 51 covering the lenticular structure 70 is smaller than a refractive index of the lenticular structure 70.
It should be noted that the embodiment shown in fig. 3 only schematically shows a structural diagram of a stacked arrangement of each organic layer 51 and each inorganic layer 52 in the encapsulation layer 50, wherein the physical dimensions of each organic layer 51 and each inorganic layer 52 are not represented.
Specifically, as shown in fig. 3, in the present embodiment, the encapsulation layer 50 is formed by an organic layer 51 and an inorganic layer 52 that are alternately stacked, at least a portion of the organic layer 51 covers the lenticular structure 70, and at least a portion of the inorganic layer 52 covers the lenticular structure 70, wherein the thickness of the organic layer 51 covering the lenticular 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 lenticular structure 70 is smaller than the refractive index of the material of the lenticular structure 70 itself, so that the light passes through the organic layer 51 and is emitted to the lenticular structure 70, the light is deflected, and a light gathering effect is formed, so that more light is emitted to the fingerprint identification unit 61; further, by limiting the refractive index of the material of the organic layer 51, light can be deflected more effectively, and a converging effect can be achieved.
Referring to fig. 2, in an alternative embodiment of the present application, the method further includes: an insulating layer 110, a planarization layer 120 and a pixel defining layer 130, which are sequentially stacked, the insulating layer 110 and the planarization layer 120 being located on the array layer 20, the pixel defining layer 130 being located on the light emitting device layer 30;
the protrusion structure is fabricated 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.
It should be noted that the embodiment shown in fig. 2 only schematically shows the relative position relationship of the film layers, and does not represent actual dimensions.
Specifically, as shown in fig. 2, the present embodiment includes an array substrate, a light emitting device layer 30, and a package layer 50 sequentially stacked, an insulating layer 110 and a planarization layer 120 are disposed in the array layer 20, the insulating layer 110 is located on a 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 planarize a side of the array substrate away from the substrate 10, the light emitting device layer 30 is disposed on a side of the planarization layer 120 away from the substrate 10, the light emitting device layer 30 includes a pixel defining layer 130, and a plurality of openings defined by the pixel defining layer 130, and light emitting devices 40 are disposed in the openings; the convex mirror structure 70 and any one of the insulating layer 110, the planarization layer 120, the pixel definition layer 130 or the encapsulation layer 50 are prepared on the same layer, and the convex mirror structure 70 can be provided with more film layers, so that the convex mirror structure 70 can be flexibly manufactured according to actual requirements during manufacturing; it should be noted that the convex mirror structure 70 needs to be located on a side of the fingerprint identification 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 emitted to the fingerprint identification unit 61.
Referring to fig. 2, in an alternative embodiment of the present application, the convex mirror structure 70 and the pixel defining layer 130 are formed in the same layer and process.
Specifically, as shown in fig. 2, in the present embodiment, the convex mirror structure 70 and the pixel defining layer 130 are on the same layer and are prepared by the same process; on one hand, when the lenticular structure 70 and the pixel definition layer 130 are prepared on the same layer, the spatial range in which the fingerprint identification unit 61 on the side of the lenticular structure 70 close to the substrate 10 can be manufactured is large; on the other hand, when the lenticular structure 70 and the pixel definition layer 130 are prepared on the same layer, the same mask, namely, a halftone mask (halftone mask), may be used, so that the lenticular structure 70 and the pixel definition layer 130 may be simultaneously fabricated, and the fabrication process may be saved.
Fig. 4 is a schematic structural diagram of a fingerprint identification unit according to an embodiment of the present application, referring to fig. 4 in combination with fig. 2, in an alternative embodiment of the present application, the array layer 20 includes a plurality of metal layers S spaced apart from each other along a direction D1 perpendicular to the substrate;
the light-emitting device 40 further comprises 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 being located on a side of the anode 41 facing away from the substrate 10;
the fingerprint identification unit 61 comprises a first electrode 61 and a second electrode 62 which are arranged in a stacked mode, wherein the second electrode 62 is positioned on the side, facing away from the substrate 10, of the first electrode 61;
the first electrode 61 and any metal layer S in the array layer 20 are prepared in the same layer, the second electrode 62 and any metal layer S in the array layer 20, the anode 41 or the cathode 43 are prepared in the same layer, and 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.
Specifically, as shown in fig. 4 in combination with fig. 2, the light emitting device 40 in the present embodiment includes an anode 41 and a cathode 43, and a light emitting layer 42 located between the anode 41 and the cathode 43, wherein the cathode 43 is located on a side of the anode 41 facing away from the substrate 10; the fingerprint identification unit 61 in the present embodiment includes a first electrode 61 and a second electrode 62 which are stacked, the second electrode 62 being located on a side of the first electrode 61 facing away from the substrate 10; the array layer 20 comprises a plurality of metal layers S arranged at intervals, the first electrode 61 and any one of the metal layers S in the array layer 20 are prepared at the same layer, and the second electrode 62 and any one of the metal layers S in the array layer 20 are prepared at the same layer; alternatively, the metal layer S included in the array layer 20 may be a gate electrode, a source/drain electrode 21, a semiconductor layer, and an electrode connecting the electrode and forming a capacitor in the driving circuit; considering that the first electrode 61 and the second electrode 62 are disposed in different layers, the metal layer S where the first electrode 61 is disposed is different from the metal layer S where the second electrode 62 is disposed; thus, 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 manufacturing process; in addition, the second electrode 62 and any one of the anode 41 and the cathode 43 of the light emitting device 40 are fabricated in the same layer, so that the function of the fingerprint identification unit 61 is realized and the manufacturing process is effectively saved.
Fig. 5 is a schematic structural diagram of an array layer provided in an embodiment of the present application, please refer to fig. 5 in combination with fig. 2, in an alternative embodiment of the present application, an array layer 20 includes source and drain electrodes 21 that are arranged at intervals and located on the same layer, the array layer 20 includes a first metal layer 22 and a second metal layer 23 that are arranged at intervals, and the first metal layer 22 is located on a side of the second metal layer 23 away from the substrate 10;
the anode 41 of the light emitting device 40 is electrically connected with the second metal layer 23 through the first metal layer 22, and the second metal layer 23 is on the same layer as the source/drain 21 of the array layer 20; the first electrode 61 is in the same layer as the first metal layer 22.
Specifically, with reference to fig. 5 and fig. 2, in the present embodiment, the metal layers S included in the array layer 20 are a source/drain 21, a first metal layer 22 and a second metal layer 23, respectively, the source and the drain are located at the same layer and are arranged at intervals, the first metal layer 22 and the second metal layer 23 are arranged at intervals along a direction D1 perpendicular to the substrate, and the first metal layer 22 is located at a side of the second metal layer 23 away from the substrate 10; the anode 41 of the light emitting device 40 is electrically connected with the second metal layer 23 through the first metal layer 22, the second metal layer 23 is on the same layer as the source/drain electrode 21 in the array layer 20, and the first electrode 61 is on the same layer as the first metal layer 22; it can also be understood that, along the direction D1 perpendicular to the substrate, when the distance between the first metal layer 22 and the light emitting device 40 is the closest, and the convex mirror structure 70 and the pixel defining layer 130 are fabricated on the same layer, the first electrode 61 and the first metal layer 22 are fabricated on the same layer, so that the fingerprint identification unit 61 can sense more light rays when the distance between the fingerprint identification unit 61 and the convex mirror structure 70 is the closest, and the fabrication process can be saved when the first electrode 61 and the first metal layer 22 are fabricated on the same layer.
With continued reference to fig. 2, in an alternative embodiment of the present application, the second electrode 62 is in the same layer as the anode 41 of the light emitting device 40.
Specifically, as shown in fig. 2, in the present 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.
With continued reference to fig. 2, in an alternative embodiment of the present application, the second electrode 62 is a transparent electrode.
Specifically, as shown in fig. 2, in the present embodiment, the second electrode 62 is a transparent electrode, so that the light sensed by the fingerprint identification unit 61 is not affected, that is, the light is reflected by a finger and then emitted to the convex mirror structure 70, and the light is collected by the convex mirror structure 70 and then emitted to the fingerprint identification unit 61, so as to prevent the second electrode 62 from affecting the fingerprint identification unit 61 to sense the light, therefore, the second electrode 62 is set as a transparent electrode; optionally, the second electrode 62 in this embodiment is ITO.
With continuing reference to fig. 4 in conjunction with fig. 2, in an alternative embodiment of the present application, the fingerprint identification unit 61 further includes a photodiode 90, and the photodiode 90 is located between the first electrode 61 and the second electrode 62; the photodiode 90 includes a first amorphous silicon thin film 91 and a second amorphous silicon thin film 93, and a third amorphous silicon thin film 92 between the first amorphous silicon thin film 91 and the second amorphous silicon thin film 93, the first amorphous silicon thin film 91 being electrically connected to the second electrode 62, and the second amorphous silicon thin film 93 being electrically connected to the first electrode 61.
Specifically, with reference to fig. 4 and fig. 2, the fingerprint identification unit 61 of the present embodiment includes a photodiode 90, and the photodiode 90 is located between the first electrode 61 and the second electrode 62 of the fingerprint identification unit 61; the photodiode 90 includes a first amorphous silicon thin film 91 and a second amorphous silicon thin film 93, and a third amorphous silicon thin film 92 located between the first amorphous silicon thin film 91 and the second amorphous silicon thin film 93, the first amorphous silicon thin film 91 being electrically connected to the second electrode 62, the second amorphous silicon thin film 93 being electrically connected to the first electrode 61; the second amorphous silicon film 93 is N-a-si, the first amorphous silicon film 91 is P-a-si, the third amorphous silicon film 92 is i-a-si, after the light reflected by the fingerprint is emitted to the third amorphous silicon film 92, the third amorphous silicon film 92 generates a photogenerated carrier, a built-in electric field is formed by the first amorphous silicon film 91 and the second amorphous silicon film 93 to form a photogenerated current, so that a fingerprint image with alternate light and shade is formed after the fingerprint is pressed; in this manner, the fingerprint recognition function of the fingerprint recognition unit 61 is realized.
Referring to fig. 4 in combination with fig. 2, in an alternative embodiment of the present application, the first amorphous silicon thin film 91 is electrically connected to the second electrode 62 in a contact manner, and the second amorphous silicon thin film 93 is electrically connected to the first electrode 61 in a contact manner.
Specifically, with reference to fig. 4 and fig. 2, in the present embodiment, the first amorphous silicon thin film 91 is electrically connected to the second electrode 62 in a contact manner, and the second amorphous silicon thin film 93 is electrically connected to the first electrode 61 in a contact manner; it is also understood that the first amorphous silicon thin film 91 is stacked on the second electrode 62, and the second amorphous silicon thin film 93 is stacked on the first electrode 61; therefore, the photodiode 90, the first electrode 61, the second electrode 62 and a part of the film layers in the display panel 100 are manufactured simultaneously, and the full-screen fingerprint identification function can be realized without externally hanging.
With reference to fig. 4 in combination with fig. 2, in an alternative 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 both; the first amorphous silicon thin film 91 is an N-type amorphous silicon thin film, and the second amorphous silicon thin film 93 is a P-type amorphous silicon thin film.
Specifically, with reference to fig. 4 and fig. 2, in the present 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.
Fig. 6 is a schematic structural diagram of another display panel provided in an embodiment of the present application, please refer to fig. 6, and in an alternative embodiment of the present application, the display panel further includes: a light-shielding matrix layer 140 located on a side of the encapsulation layer 50 facing away from the substrate 10, the light-shielding matrix layer 140 including a plurality of first openings K1 and at least one second opening K2; the first opening K1 at least partially overlaps the light emitting device 40, and the at least one second opening K2 at least partially overlaps the fingerprint recognition unit 61 in the direction D1 perpendicular to the substrate.
Specifically, as shown in fig. 6, the display panel 100 in this embodiment further includes a light-shielding matrix layer 140 located on a side of the encapsulation layer 50 away from the substrate 10, where the light-shielding matrix layer 140 includes a plurality of first openings K1 and at least one second opening K2, and the first opening K1 at least partially overlaps with the light-emitting device 40, that is, the first opening K1 is disposed corresponding to the light-emitting device 40; the at least one second opening K2 at least partially overlaps the fingerprint recognition unit 61, i.e. the at least one second opening K2 is disposed corresponding to the fingerprint recognition unit 61; the first opening K1 and the second opening K2 are used for transmitting light, a light part emitted by the light emitting unit is emitted to the light emitting surface of the display panel 100 through the first opening K1, and a light part reflected by the fingerprint is emitted to the fingerprint identification unit 61; in this manner, the fingerprint recognition function of the display panel 100 is realized.
With continued reference to fig. 6 and with reference to fig. 1, in an alternative embodiment of the present application, the color-resist layer disposed on the side of the light-shielding matrix layer 140 away from the substrate 10 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.
Specifically, with reference to fig. 6 and fig. 1, in the present embodiment, a color resist layer is disposed on a side of the light-shielding matrix layer 140 away from the substrate 10, where the color resist layer includes a red color resist R, a green color resist G, and a blue color resist B; wherein, along the direction D1 perpendicular to the substrate, at least part of the first opening K1 overlaps with the red color resistor R, at least part of the first opening K1 overlaps with the green color resistor G, and at least part of the first opening K1 overlaps with the blue color resistor B; thus, the display panel 100 displays color.
With continued reference to fig. 6, and with reference to fig. 1, in an alternative embodiment of the present application, the color-resist layer disposed on the side of the light-shielding matrix layer 140 away from the substrate 10 includes a blue color resist B, wherein, in the direction D1 perpendicular to the substrate, the second opening K2 and the blue color resist B at least partially overlap.
Specifically, with reference to fig. 6 and fig. 1, in this embodiment, a color resist layer is disposed on a side of the light-shielding matrix layer 140 away from the substrate 10, where the color resist layer includes a blue color resist B; the second opening K2 and the blue color resistor B are at least partially overlapped along the direction D1 perpendicular to the substrate, so that light reflected by the fingerprint is emitted to the blue color resistor B and then to the fingerprint identification unit 61, and therefore the infrared light can be shielded from penetrating through the finger to influence the imaging effect of fingerprint identification.
With continued reference to fig. 1, in an alternative embodiment of the present application, the orthographic shape 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 diamond, or a polygon.
Specifically, as shown in fig. 1, in the present 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; the shape of the first opening K1 is not limited in this embodiment, and the function of the first opening K1 for placing the light emitting device 40 can be realized.
With continued reference to fig. 1, in an alternative embodiment of the present application, the orthographic shape of the second opening K2 on the substrate 10 is either circular or elliptical.
Specifically, as shown in fig. 1, in the present embodiment, in the direction D1 perpendicular to the substrate, the shape of the second opening K2 is one of a circle and an ellipse, wherein, in the direction D1 perpendicular to the substrate, the lenticular structure 70 is a circle or an ellipse, so that as much light as possible is gathered by the lenticular structure 70 and then emitted to the fingerprint identification unit 61, thus, the orthographic projection of the second opening K2 on the substrate 10 is a circle or an ellipse, the blue color block B disposed in the second opening K2 is also a circle or an ellipse, as much light as possible is sensed by the fingerprint identification unit 61, and further, the space occupied by the fingerprint identification unit 61 is reduced.
Fig. 7 is a schematic structural diagram of a display panel provided in an embodiment of the present application, please refer to fig. 7, which in an alternative embodiment of the present application, further includes: the plurality of sub-pixels 150 arranged in the row direction S1 and the column direction S2 have the fingerprint identification unit 61 disposed between at least two adjacent sub-pixels 150 in the row direction S1 and/or the column direction S2.
Specifically, as shown in fig. 7, the display panel 100 in this embodiment includes a plurality of sub-pixels 150, and the sub-pixels 150 are respectively arranged along a row direction S1 or a column direction S2, wherein the fingerprint identification unit 61 is disposed between adjacent sub-pixels 150 along the row direction S1 and/or the column direction S2, so that the fingerprint identification unit 61 does not occupy other space of the display panel 100 and is disposed between adjacent sub-pixels 150, and the space occupied by the fingerprint identification unit 61 can be saved while the integration of the fingerprint identification unit 61 with the display panel 100 is realized.
With continued reference to fig. 6, in an alternative embodiment of the present application, the light-shielding matrix layer 140 is stacked on the encapsulation layer 50, and the light-shielding matrix layer 140 includes a plurality of black matrices 141, and the black matrices 141 define the shapes of the first opening K1 and the second opening K2.
Specifically, with reference to fig. 6, in the present embodiment, the light-shielding matrix layer 140 is stacked on the package layer 50, and the light-shielding matrix layer 140 is located on a side of the package layer 50 away from the substrate 10, wherein the light-shielding matrix layer 140 includes a plurality of black matrices 141, and the black matrices 141 are used to define shapes of the first opening K1 and the second opening K2; on one hand, the light emitted by the light emitting device 40 can be emitted to 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 to the fingerprint recognition unit 61 through the second opening K2, so that the light is sensed by the fingerprint recognition unit 61, and the fingerprint recognition function of the display panel 100 is realized.
Based on the same inventive concept, fig. 8 is a schematic structural diagram of a display device provided in an embodiment of the present application, please refer to fig. 8, the present application further provides a display device 200, the display device 200 includes a display panel 100, the display panel 100 is the display panel 100 provided in any of the embodiments of the present application, and repeated descriptions are omitted.
It should be noted that, for the embodiments of the display device 200 provided in the embodiments of the present application, reference is made to the embodiments of the display panel 100, and the display device 200 of the present application takes an Organic Light Emitting Diode (OLED) device as an example, and repeated details are omitted. The display device 200 provided by the present application may be: any product or component with practical functions such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.
According to the embodiments, the application has the following beneficial effects:
the application provides a display panel and display device, mode through integrated fingerprint identification unit, realize comprehensive screen fingerprint identification, and still be provided with the convex mirror structure between fingerprint identification unit and display panel play plain noodles, the refracting index of covering the at least one deck rete material of convex mirror structure is less than the refracting index of convex mirror structure self material, thus, the convex mirror structure can deflect light, make the light that passes the convex mirror structure gather together the back directive fingerprint identification unit, and the orthographic projection of convex mirror structure on the substrate and the orthographic projection of fingerprint identification unit on the substrate are partial overlap at least, so, make the light after the convex mirror structure gathers together can be as much as possible by the perception of fingerprint identification unit, improve the precision of fingerprint identification unit discernment.
The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, and is not to be construed as excluding other embodiments, but rather is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.
Claims (19)
1. A display panel, comprising:
a substrate;
an array layer located on one side of the substrate;
a light emitting device layer including a plurality of light emitting devices on a side of the array layer facing away from the substrate;
the packaging layer is positioned on one side, away from the substrate, of the light-emitting device layer;
the fingerprint identification component comprises a plurality of fingerprint identification units, and the fingerprint identification units are positioned between the substrate and the packaging layer along the direction vertical to the substrate;
the convex mirror structure is located the fingerprint identification unit deviates from one side of the substrate, the convex mirror structure faces away from one side of the substrate and is convex, the refractive index of at least one layer of film layer material of the convex mirror structure is smaller than that of the convex mirror structure, and the orthographic projection of the convex mirror structure on the substrate is at least partially overlapped with the orthographic projection of the fingerprint identification unit on the substrate.
2. The display panel according to claim 1, wherein the encapsulation layer comprises an organic layer and an inorganic layer stacked, at least a part of the organic layer and at least a part of the inorganic layer cover the convex mirror structure in a direction perpendicular to the substrate, and a refractive index of the organic layer covering the convex mirror structure is smaller than a refractive index of the convex mirror structure.
3. The display panel according to claim 1, further comprising: the light-emitting device comprises an insulating layer, a planarization layer and a pixel definition layer which are sequentially stacked, wherein the insulating layer and the planarization layer are positioned on the array layer, and the pixel definition layer is positioned on the light-emitting device layer;
the convex structure and any one of the insulating layer, the planarization layer, the pixel definition layer or the packaging layer are prepared on the same layer.
4. The display panel of claim 3, wherein the lenticular structure is fabricated in the same layer and process as the pixel defining layer.
5. The display panel according to claim 1, wherein the array layer comprises a plurality of metal layers arranged at intervals in a direction perpendicular to the substrate;
the light-emitting device further comprises an anode and a cathode, and a light-emitting layer located between the anode and the cathode, the cathode being located on a side of the anode facing away from the substrate;
the fingerprint identification unit comprises a first electrode and a second electrode which are arranged in a stacked mode, and the second electrode is positioned on one side, away from the substrate, of the first electrode;
the first electrode and any metal layer in the array layer are prepared in the same layer, the second electrode and any metal layer in the array layer, the anode or the cathode are prepared in the same layer, and the metal layer where the first electrode is located and the metal layer where the second electrode is located are arranged in different layers.
6. The display panel according to claim 5, wherein the array layer comprises source and drain electrodes which are arranged at intervals and located on the same layer, the array layer comprises a first metal layer and a second metal layer which are arranged at intervals, and the first metal layer is located on one side, away from the substrate, of the second metal layer;
the anode of the light-emitting device is electrically connected with the second metal layer through the first metal layer, and the second metal layer is the same as the source and drain electrodes of the array layer; the first electrode and the first metal layer are on the same 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 7, wherein the second electrode is a transparent electrode.
9. The display panel according to claim 5, wherein the fingerprint identification unit further comprises a photodiode between the first electrode and the second electrode; the photodiode comprises a first amorphous silicon film, a second amorphous silicon film and a third amorphous silicon film positioned between the first amorphous silicon film and the second amorphous silicon film, wherein the first amorphous silicon film is electrically connected with the second electrode, and the second amorphous silicon film is electrically connected with the first electrode.
10. The display panel according to claim 9, wherein the first amorphous silicon thin film is electrically connected to the second electrode contact, and wherein the second amorphous silicon thin film is electrically connected to the first electrode contact.
11. The display panel according to claim 9, wherein the first amorphous silicon thin film is a P-type amorphous silicon thin film, the second amorphous silicon thin film is an N-type amorphous silicon thin 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.
12. The display panel according to claim 1, further comprising: the light-shielding matrix layer is positioned on one side, away from the substrate, of the packaging layer and comprises a plurality of first openings and at least one second opening; the first openings at least partially overlap the light emitting devices and at least one of the second openings at least partially overlaps the fingerprint identification unit in a direction perpendicular to the substrate.
13. The display panel according to claim 12, wherein a color resist layer is disposed on a side of the light-shielding matrix layer away from the substrate, and the color resist layer includes a red color resist, a green color resist, and a blue color resist, and wherein the first opening and the red color resist, the green color resist, and the blue color resist are at least partially overlapped in a direction perpendicular to the substrate.
14. The display panel according to claim 12, 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, and wherein the second opening and the blue color resist at least partially overlap in a direction perpendicular to a plane of the display panel.
15. The display panel according to claim 12, wherein an orthogonal projection shape of the first opening on the substrate is any one of a circle, an ellipse, a square, a rectangle, a rounded rectangle, a diamond, or a polygon.
16. The display panel according to claim 12, wherein an orthogonal projection shape of the second opening on the substrate is any one of a circle and an ellipse.
17. The display panel according to claim 12, further comprising: the fingerprint identification device comprises a plurality of sub-pixels arranged along the row direction and the column direction, and the fingerprint identification unit is arranged between at least two adjacent sub-pixels along the row direction and/or the column direction.
18. The display panel according to claim 12, wherein the light-shielding matrix layer is provided to be stacked on the encapsulation layer, and the light-shielding matrix layer includes a plurality of black matrices defining shapes of the first opening and the second opening.
19. A display device characterized by comprising the display panel according to any one of claims 1 to 18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210222433.6A CN114613823A (en) | 2022-03-09 | 2022-03-09 | Display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210222433.6A CN114613823A (en) | 2022-03-09 | 2022-03-09 | Display panel and display device |
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| CN114613823A true CN114613823A (en) | 2022-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210222433.6A Pending CN114613823A (en) | 2022-03-09 | 2022-03-09 | Display panel and display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117135971A (en) * | 2023-02-28 | 2023-11-28 | 荣耀终端有限公司 | Display panel, preparation method and display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117135971A (en) * | 2023-02-28 | 2023-11-28 | 荣耀终端有限公司 | Display panel, preparation method and display device |
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