CN110808271A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN110808271A CN110808271A CN201911105922.8A CN201911105922A CN110808271A CN 110808271 A CN110808271 A CN 110808271A CN 201911105922 A CN201911105922 A CN 201911105922A CN 110808271 A CN110808271 A CN 110808271A
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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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- 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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
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Abstract
The invention provides a display panel and a display device, wherein the display panel comprises a display screen and a fingerprint identification module arranged on the back of the display screen, the display screen comprises an array substrate and a pixel definition layer, and the fingerprint identification module is positioned on one side of the array substrate, which deviates from the pixel definition layer; an organic light emitting layer is arranged in the pixel defining layer, a plurality of light gathering through holes are arranged in a non-light emitting area of the pixel defining layer, the light gathering through holes penetrate through the pixel defining layer, and light gathering lenses are arranged in the light gathering through holes. In the display panel provided by the invention, the arrangement of the condensing through holes and the condensing lens ensures that the fingerprint reflected light rays are converged through the refraction of the condensing lens, the incidence range of the fingerprint reflected light rays is enlarged, the fingerprint reflected light rays can more accurately and efficiently penetrate through the display panel and reach the fingerprint identification module, and the fingerprint identification unlocking speed is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a display device.
Background
When the OLED full-screen display panel is applied to mobile terminals such as mobile phones, the effective display area is large, more information display quantity is provided, and human-computer interaction experience is further improved, so that the full-screen display panel is increasingly applied to display devices. The existing display panel needs to integrate the fingerprint identification module in a display area of the comprehensive display screen in order to keep the existing fingerprint identification function while realizing the comprehensive display screen.
Under the general condition, the fingerprint identification module is arranged below the display screen, and in the working state, the light-emitting element in the display screen emits light to the outside of the screen body, and the light is reflected into the screen body through the fingerprint to reach the fingerprint identification module, so that the fingerprint identification is realized. However, since the display screen has the opaque layer therein, the light reflected by the fingerprint needs to be transmitted to the fingerprint identification module through the transparent gap of the opaque layer. Therefore, the display screen has poor light transmission and low transmittance of incident light, so that the problem of low fingerprint identification unlocking speed is caused.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, which are used for solving the problem of low fingerprint identification unlocking speed in the prior art.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
in one aspect, an embodiment of the present invention provides a display panel, including a display screen and a fingerprint identification module disposed on a back surface of the display screen, where the display screen includes an array substrate and a pixel definition layer, and the fingerprint identification module is located on a side of the array substrate away from the pixel definition layer; the organic light-emitting layer is arranged in the pixel defining layer, the non-light-emitting area of the pixel defining layer is provided with a plurality of light-gathering through holes, the light-gathering through holes penetrate through the pixel defining layer, and light-gathering lenses are arranged in the light-gathering through holes.
Compared with the prior art, the display panel provided by the embodiment of the invention has the following advantages:
the display panel provided by the embodiment of the invention comprises a display screen and a fingerprint identification module, wherein the display screen comprises an array substrate and a pixel definition layer, and a light condensing through hole penetrating through the pixel definition layer and a light condensing lens positioned in the light condensing through hole are arranged in a non-light emitting region of the pixel definition layer, wherein the light condensing through hole penetrates through the pixel definition layer in a way that fingerprint reflection light rays are not reflected or refracted by the pixel definition layer when passing through the light condensing lens, so that the fingerprint reflection light rays can be converged by refraction of the light condensing lens, the incidence range of the fingerprint reflection light rays is enlarged, the fingerprint reflection light rays can more accurately and efficiently penetrate through a light transmitting gap of a light-tight layer in the display panel and quickly reach the fingerprint identification module, the transmittance of the fingerprint reflection light rays is improved, and the fingerprint identification unlocking speed is improved.
As an improvement of the display panel according to the embodiment of the invention, the plurality of light-gathering through holes are arranged in an array in the non-light-emitting area of the pixel defining layer.
As an improvement of the display panel according to the embodiment of the invention, the condensing lens is a micro convex lens.
As an improvement of the display panel according to the embodiment of the invention, a convex surface of the micro convex lens faces a side away from the array substrate.
As an improvement of the display panel according to the embodiment of the invention, the micro convex lens is made of light-transmitting resin.
As an improvement of the display panel according to the embodiment of the present invention, the array substrate includes a substrate and a metal layer, the metal layer includes a metal electrode and a metal wire, and the metal layer is provided with a plurality of light-transmitting regions.
As an improvement of the display panel according to the embodiment of the present invention, the light-gathering through hole corresponds to the light-transmitting area.
As an improvement of the display panel according to the embodiment of the invention, the array substrate further includes a semiconductor layer, an insulating layer, and a planarization layer disposed between the substrate and the pixel defining layer, and the metal electrode is connected to the semiconductor layer through the insulating layer.
As an improvement of the display panel according to the embodiment of the invention, the display screen further includes an anode layer disposed between the planarization layer and the pixel defining layer, and the anode layer is electrically connected to the metal electrode.
On the other hand, the embodiment of the invention also provides a display device which comprises the display panel.
The display device provided by the embodiment of the invention comprises the display panel, so that the display device also has the same advantages as those of the display panel, and the description is omitted.
In addition to the technical problems, technical features constituting technical aspects, and advantageous effects brought by the technical features of the technical aspects described above, other technical problems, technical features included in technical aspects, and advantageous effects brought by the technical features that can be solved by the display panel and the display device provided by the embodiment of the present invention will be further described in detail in the detailed description.
Drawings
In order to illustrate embodiments of the invention or prior art solutions more clearly, the drawings that are needed in the description of the embodiments of the invention or prior art will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the invention, and that these drawings and the written description are not intended to limit the scope of the disclosed concept in any way, but rather to illustrate it to those skilled in the art by referring to specific embodiments, and that other drawings may be obtained from these drawings without inventive effort to those skilled in the art.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention.
Description of reference numerals:
10-pixel definition layer;
11-a light-gathering through hole;
12-a condenser lens;
13-an organic light-emitting layer;
21-substrate base plate;
22-a semiconductor layer;
23-an insulating layer;
24-a metal electrode;
25-a light-transmitting region;
26-a planarization layer;
27-an anode layer;
28-a cathode layer;
30-a fingerprint identification module;
31-photosensitive cells.
Detailed Description
Among the present display panel, fingerprint identification module sets up in the display screen below usually, is provided with non-euphotic layer between the glass apron of display screen and the substrate base plate, for example metal level and metal wire layer etc. transmit to fingerprint identification module through the printing opacity gap of non-euphotic layer through the light of fingerprint reflection, but because metal electrode and metal wire etc. are not tight layer comparatively intensive, lead to the display screen light transmissivity poor, incident light's transmissivity is lower, has caused the slow problem of fingerprint identification unblock speed.
In view of the above-mentioned drawbacks, embodiments of the present invention provide an improved solution, in which, the display panel comprises a display screen and a fingerprint identification module, the display screen comprises an array substrate and a pixel definition layer, and a light-gathering through hole penetrating the pixel defining layer and a light-gathering lens positioned in the light-gathering through hole are arranged in the non-light-emitting region of the pixel defining layer, wherein, the arrangement mode that the light-gathering through hole penetrates through the pixel definition layer ensures that the fingerprint reflected light cannot be reflected or refracted by the pixel definition layer when passing through the light-gathering lens, ensures that the fingerprint reflected light can be converged by the refraction of the light-gathering lens, increases the incidence range of the fingerprint reflected light, and the light-transmitting gap can penetrate through the light-transmitting gap of the light-tight layer in the display panel more accurately and efficiently and can reach the fingerprint identification module quickly, so that the transmittance of the reflected light of the fingerprint is improved, and the unlocking speed of the fingerprint identification is increased.
In order to make the aforementioned objects, features and advantages of the embodiments of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention. The display panel provided by the first embodiment of the invention comprises a display screen and a fingerprint identification module 30 arranged on the back of the display screen, wherein the display screen comprises an array substrate and a pixel definition layer 10, and the fingerprint identification module 30 is positioned on one side of the array substrate, which is far away from the pixel definition layer 10; an organic light emitting layer 13 is disposed in the pixel defining layer 10, a plurality of light collecting through holes 11 are disposed in a non-light emitting region of the pixel defining layer 10, the light collecting through holes 11 penetrate the pixel defining layer 10, and light collecting lenses 12 are disposed in the light collecting through holes 11.
Specifically, in this embodiment, the display panel includes a display screen and a fingerprint identification module 30, as shown in fig. 1, the fingerprint identification module 30 is disposed on a back surface of the display screen, and it should be noted that, in this embodiment, the back surface of the display screen refers to a side of the display screen away from the light exit surface. The fingerprint identification module 30 can be adhered to the display screen through an adhesive, and the adhesive can be specifically set to be an optical adhesive. In this embodiment, the fingerprint identification module 30 is specifically configured as an optical fingerprint identification module 30, the optical fingerprint identification module 30 includes a plurality of photosensitive units 31, and the plurality of photosensitive units 31 are disposed facing the display screen to receive the reflected light of the fingerprint passing through the display screen.
The display panel in this embodiment includes an array substrate and a pixel defining layer 10, as shown in fig. 1, and described by taking the orientation shown in fig. 1 as an example, the pixel defining layer 10 is disposed above the array substrate, the pixel defining layer 10 includes a light emitting region, and the organic light emitting layer 13 is disposed in the light emitting region of the pixel defining layer 10. The display panel in this embodiment may be specifically configured as an OLED display panel, and the Organic Light-Emitting layer 13 includes a plurality of Organic Light-Emitting Diode (OLED) devices.
The pixel defining layer 10 further includes a non-light emitting region disposed adjacent to the light emitting region. The light-gathering through hole 11 is disposed in the non-light-emitting region in the present embodiment, and preferably, the light-gathering through hole 11 is disposed at a position corresponding to the light-transmitting region of the lower film layer. The light-gathering through hole 11 may be formed by photolithography, and the light-gathering through hole 11 penetrates through the pixel defining layer 10 from a top surface of the pixel defining layer 10, where the top surface refers to a side of the pixel defining layer 10 facing away from the array substrate. In this embodiment, the light-gathering through hole 11 penetrates through the pixel defining layer 10, so that the fingerprint reflected light is prevented from being refracted or reflected by the pixel defining layer 10, and the intensity of the fingerprint reflected light is improved.
In addition to the above embodiment, the cross-sectional shape of the light collecting through hole 11 may be rectangular or inverted trapezoidal, with the plane perpendicular to the pixel defining layer 10 being taken as a cross section.
The number of the light collecting through holes 11 is plural, and accordingly, the number of the light collecting lenses 12 provided in the light collecting through holes 11 is also plural. One condenser lens 12 may be disposed in each condenser through-hole 11. The condenser lens 12 in this embodiment is used to increase the intensity of the reflected light of the fingerprint, that is, the intensity of the reflected light of the fingerprint is increased by increasing the range of the reflected light of the fingerprint entering the display screen.
Specifically, the condenser lens 12 may be provided as a convex lens, and may also be provided as another lens having a condensing function such as a fresnel lens. The material of the condenser lens 12 is a material having good light transmittance, and may be, for example, liquid glass or light-transmitting plastic.
In addition to the above embodiments, the condensing lens 12 is disposed in the condensing through hole 11, and specifically, the condensing lens 12 may be processed in the condensing through hole 11 by deposition, photolithography, and inkjet printing, or may be disposed in the condensing through hole 11 by adhesion.
When the display panel provided by the embodiment is used, light emitted by the organic light emitting layer 13 is reflected by a finger fingerprint of a user, and after the reflected light of a large range of fingerprints is refracted and converged by the condensing lens 12, the reflected light of the large range of fingerprints passes through each film layer below the pixel definition layer 10 in the display screen, and finally enters the fingerprint identification module 30 to be received and identified by the fingerprint identification module 30.
In summary, in the display panel provided in the first embodiment of the present invention, the light-gathering through hole 11 penetrating through the pixel defining layer 10 is disposed in the non-light-emitting region of the pixel defining layer 10, the light-gathering lens 12 is disposed in the light-gathering through hole 11, and the light-gathering through hole 11 penetrates through the pixel defining layer 10 in such a manner that the fingerprint reflected light is not reflected or refracted by the pixel defining layer 10 when passing through the light-gathering lens 12, so that the fingerprint reflected light can be converged by refraction of the light-gathering lens 12, and meanwhile, the incident range of the fingerprint reflected light is enlarged, and the fingerprint reflected light can more accurately and efficiently pass through the light-transmitting gap of the light-proof layer in the display panel, and rapidly reach the fingerprint identification module 30, so that the transmittance of the fingerprint reflected light is increased.
In one possible implementation, the plurality of light collecting through holes 11 are arrayed in the non-light emitting region of the pixel defining layer 10. Specifically, the light condensing through holes 11 are disposed in the non-light emitting region of the pixel defining layer 10, the distance between the adjacent light condensing through holes 11 can be adjusted according to actual conditions, when the distance between the adjacent light condensing through holes 11 is smaller, the number of the light condensing through holes 11 is larger, the distance between the adjacent light condensing through holes 11 is not specifically limited in the embodiment, the array arrangement mode is convenient to manufacture, and the incidence range of the fingerprint reflection light is further increased. Further, the position where the light-gathering through hole 11 should be disposed may also be determined according to the position of the light-transmitting area on another film layer below the pixel definition layer 10.
Further, in one possible implementation, the condenser lens 12 is provided as a micro-convex lens. On the basis of the above embodiment, condensing lens 12 is used for increasing the scope of the fingerprint reflection light that gets into the display screen and gathering fingerprint reflection light, sets condensing lens 12 to the convex lens a little in this embodiment, and the convex lens a little is convenient for make, and can increase fingerprint reflection light's scope and gather fingerprint reflection light. Specifically, the micro convex lens may be adhered inside the light condensing through hole 11, and also directly formed inside the light condensing through hole 11.
Describing by taking the example that the micro convex lens is directly formed in the light-gathering through hole 11, in particular, during manufacturing, a material with good light transmittance, such as a light-transmitting resin, can be adopted, and the light-transmitting material is coated on the non-light-emitting area of the pixel defining layer 10 in an ink-jet printing or vapor deposition manner and is cured in the light-gathering through hole 11; and photoetching the solidified light-transmitting material, etching off redundant parts on the periphery of the light-gathering through hole 11, slightly extending the top of the light-transmitting material in the light-gathering through hole 11 out of the light-gathering through hole 11, heating to enable the light-gathering through hole 11 to be molten, stopping heating when the top surface of the extended part is molten to form a spherical surface, and cooling and solidifying to form a micro convex lens positioned in the light-gathering through hole 11.
In one possible implementation, the convex surface of the micro-convex lens faces the side away from the array substrate. On the basis of the above embodiment, the range of the fingerprint reflection light that gets into the display screen can be increased to the little convex lens, and the convex surface setting of little convex lens is in the one side that deviates from the array substrate, has increased the area of contact of fingerprint reflection light and little convex lens, is favorable to making fingerprint reflection light more extensively get into the display screen.
In one possible implementation, the micro-convex lens is provided as a light-transmitting resin. Specifically, the micro-convex lens is made of light-transmitting resin, and may be, for example, epoxy resin, polymethyl methacrylate, polycarbonate, or the like. Set up little convex lens into printing opacity resin in this embodiment and guaranteed that fingerprint reflection light passes through easily, and printing opacity resin convenient for draw materials, and the form is controlled easily, the preparation of being convenient for.
Further, the array substrate includes a substrate 21 and a metal layer, the metal layer includes a metal electrode 24 and a metal wire, and a plurality of light-transmitting regions 25 are disposed on the metal layer. As shown in fig. 1, the array substrate includes a substrate base plate 21 and a metal layer disposed above the substrate base plate 21, specifically, the substrate base plate 21 may be a glass substrate, the metal layer includes a metal electrode 24, specifically, a source/drain and a metal wire, a light-transmitting region 25 is disposed on the metal layer, and a plurality of light-transmitting regions 25 are distributed between the metal electrode 24 and the metal wire.
In addition to the above embodiments, the light collecting through hole 11 corresponds to the light transmitting area 25. Spotlight through-hole 11 and condensing lens 12 are used for assembling fingerprint reflected light and increase fingerprint reflected light's incident range, improve the efficiency and the quality that fingerprint reflected light passes through display screen and reachs fingerprint identification module 30, correspond the setting with spotlight through-hole 11 and light-permeable zone 25's position in this embodiment, have further improved fingerprint reflected light's transmissivity. In the manufacturing process of the display panel of the present embodiment, after the metal layer is manufactured, the position of each light-transmitting area 25 is determined, so that the light-gathering through hole 11 can be manufactured according to the position of the light-transmitting area 25.
Further, the array substrate further includes a semiconductor layer 22, an insulating layer 23, and a planarization layer 26 disposed between the substrate base 21 and the pixel defining layer 10, and the metal electrode 24 is connected to the semiconductor layer 22 through the insulating layer 23. As shown in fig. 1, a semiconductor layer 22 is provided on a base substrate 21, an insulating layer 23 covers the semiconductor layer 22 and the base substrate 21, a metal electrode 24 is connected to the semiconductor layer 22 through the insulating layer 23, and a planarization layer 26 covers the metal electrode 24 and the insulating layer 23. In this embodiment, the top surface of the planarization layer 26 is in contact with the pixel defining layer 10, and it should be noted that the top surface of the planarization layer 26 in this embodiment refers to the side of the planarization layer 26 away from the substrate base plate 21. Further, an interlayer insulating layer is provided on the insulating layer 23.
Further, the display screen further includes an anode layer 27 disposed between the planarization layer 26 and the pixel defining layer 10, and the anode layer 27 is electrically connected to the metal electrode 24. As shown in fig. 1, the anode layer 27 is specifically disposed between the light emitting region of the pixel defining layer 10 and the planarization layer 26, a through hole is disposed on the planarization layer 26, and the anode layer 27 is electrically connected to the metal electrode 24 through the through hole. In addition, the display screen further includes a cathode layer 28, and the cathode layer 28 covers the pixel defining layer 10 and is located on a side of the pixel defining layer 10 facing away from the array substrate.
Example two
The display device provided by the second embodiment of the present invention includes the display panel provided by the first embodiment, wherein the structure, function and implementation of the display device can refer to the detailed description in the above embodiments, and are not repeated herein. The display device provided by the embodiment can be any device with a display function, including a display panel, such as a mobile phone, a tablet computer, a smart watch, an electronic book, a navigator, a television, and a digital camera. The display device provided in this embodiment also has the same advantages as implementing a display panel provided in this embodiment, and is not described herein again.
The embodiments or implementation modes in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
In the description of the present specification, reference to the description of the terms "one embodiment", "some embodiments", "an illustrative embodiment", "an example", "a specific example", or "some examples", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The display panel is characterized by comprising a display screen and a fingerprint identification module arranged on the back of the display screen, wherein the display screen comprises an array substrate and a pixel definition layer, and the fingerprint identification module is positioned on one side of the array substrate, which is far away from the pixel definition layer;
the organic light-emitting layer is arranged in the pixel defining layer, the non-light-emitting area of the pixel defining layer is provided with a plurality of light-gathering through holes, the light-gathering through holes penetrate through the pixel defining layer, and light-gathering lenses are arranged in the light-gathering through holes.
2. The display panel according to claim 1, wherein a plurality of the light gathering through holes are arranged in an array in the non-light emitting region of the pixel defining layer, and preferably the cross-sectional shape of the light gathering through holes is rectangular or inverted trapezoidal.
3. The display panel according to claim 1, wherein the condensing lens is provided as a micro convex lens.
4. The display panel according to claim 3, wherein the convex surface of the micro-convex lens faces a side away from the array substrate.
5. The display panel according to claim 4, wherein the micro-convex lenses are provided as a light-transmitting resin.
6. The display panel according to claim 1, wherein the array substrate comprises a substrate and a metal layer, the metal layer comprises a metal electrode and a metal wire, and the metal layer is provided with a plurality of light-transmitting regions.
7. The display panel according to claim 6, wherein the light gathering through hole corresponds to the light transmissive region.
8. The display panel according to claim 6, wherein the array substrate further comprises a semiconductor layer, an insulating layer, and a planarization layer disposed between the substrate base plate and the pixel defining layer, and wherein the metal electrode is connected to the semiconductor layer through the insulating layer.
9. The display panel of claim 8, wherein the display screen further comprises an anode layer disposed between the planarization layer and the pixel definition layer, the anode layer being electrically connected to the metal electrode.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
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| CN201911105922.8A CN110808271A (en) | 2019-11-13 | 2019-11-13 | Display panel and display device |
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| CN201911105922.8A CN110808271A (en) | 2019-11-13 | 2019-11-13 | Display panel and display device |
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| WO2022247174A1 (en) * | 2021-05-25 | 2022-12-01 | 京东方科技集团股份有限公司 | Display apparatus, and display panel and manufacturing method therefor |
| CN114122290A (en) * | 2021-11-15 | 2022-03-01 | 武汉华星光电半导体显示技术有限公司 | OLED display panel and OLED display device |
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