CN111668387B - Organic light-emitting display - Google Patents

Organic light-emitting display Download PDF

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Publication number
CN111668387B
CN111668387B CN202010573631.8A CN202010573631A CN111668387B CN 111668387 B CN111668387 B CN 111668387B CN 202010573631 A CN202010573631 A CN 202010573631A CN 111668387 B CN111668387 B CN 111668387B
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light
layer
emitting display
organic light
reflecting
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CN111668387A (en
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齐璞玉
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BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
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BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
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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
    • H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
    • 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
    • H10K50/856—Arrangements for extracting light from the devices comprising reflective means
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Sustainable Development (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The embodiment of the invention provides an organic light-emitting display, relates to the technical field of display, and is used for improving the recognition accuracy of fingerprint recognition under a screen. The organic light emitting display provided by the embodiment of the invention comprises: the light-transmitting area is arranged on the light-resisting layer and is positioned in the pixel defining area of the organic light-emitting display; the photosensitive device is arranged below the photoresist layer and positioned in the orthographic projection of the light transmission area; the electroluminescent layer is arranged above the photoresist layer and is positioned in the pixel area of the organic light-emitting display; the light reflecting structure is arranged above the light resistance layer and comprises a plurality of light reflecting blocks which are arranged in an array mode, and the light reflecting blocks are all located in a pixel defining area of the organic light emitting display. The embodiment of the invention is used for manufacturing the organic light-emitting display.

Description

Organic light-emitting display
Technical Field
The present invention relates to the field of display technologies, and in particular, to an organic light emitting display.
Background
With the development of terminal technology, the screen size of the electronic device is larger and larger, and the high-screen-ratio electronic device is favored by users. The full-screen electronic equipment is extremely developed as high-screen-ratio electronic equipment, the maximization of the screen proportion of the electronic equipment is realized, and the full-screen electronic equipment is one of the most popular technologies at present and is favored and touted by the majority of users.
In order to meet the functional use demands of users, most electronic devices are equipped with a fingerprint recognition function. Because the traditional fingerprint acquisition mode needs to reserve independent areas for the fingerprint acquisition module on the front side of the electronic equipment, the fingerprint acquisition module restricts the screen occupation ratio of the electronic equipment to be further increased. In order to further improve the screen occupation ratio of the electronic device while reserving the fingerprint acquisition module on the front surface of the electronic device, the prior art proposes that the fingerprint identification function is realized by an off-screen fingerprint identification mode. The fingerprint identification under the screen mainly comprises three modes of capacitance, ultrasonic wave and optical mode, wherein the application of the optical mode of an organic light-Emitting Diode (OLED) display is most widely used. In general, the optical under-screen fingerprint identification structure requires a light-emitting layer, a light-blocking layer, an image sensor layer and other components, wherein the light-blocking layer is provided with a light-transmitting area. The principle is as follows: after passing through the panel structure on the upper layer, the light emitted by the organic light-emitting layer is reflected by an object (such as a finger) above the panel, passes through the light-transmitting area on the light-blocking layer and is captured and analyzed by the image sensor layer, so that the fingerprint identification function is realized. However, besides the light reflected by the finger, the light emitted by the electroluminescent layer of the OLED is also directly received by the image sensor through the light-transmitting area on the light-blocking layer, so that the fingerprint recognition accuracy is reduced.
Disclosure of Invention
In view of the above, the present invention provides an organic light emitting display for improving recognition accuracy of fingerprint recognition under a screen.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:
an embodiment of the present invention provides an organic light emitting display including:
the organic light-emitting display comprises a light-resistant layer, a light-transmitting layer and a light-reflecting layer, wherein a light-transmitting area is arranged on the light-resistant layer and is positioned in a pixel defining area of the organic light-emitting display;
the photosensitive device is arranged below the photoresistance layer and is positioned in the orthographic projection of the light transmission area;
the electroluminescent layer is arranged above the photoresist layer and is positioned in the pixel area of the organic light-emitting display;
the light reflecting structure is arranged above the light resistance layer and comprises a plurality of light reflecting blocks arranged in an array mode, and the light reflecting blocks are located in pixel defining areas of the organic light emitting display.
As an alternative implementation manner of the embodiment of the invention, the height of the light reflecting block is larger than or equal to the height of the electroluminescent layer.
As an alternative implementation manner of the embodiment of the present invention, the organic light emitting display further includes:
the planarization layer is covered on the photoresist layer, and the electroluminescent layer and the reflecting structure are arranged above the planarization layer;
and the pixel defining layer is arranged on the planarization layer and is positioned in the pixel defining area.
As an alternative implementation manner of the embodiment of the present invention, the organic light emitting display further includes:
a first electrode layer located below the electroluminescent layer and a second electrode layer located above the electroluminescent layer;
the light reflecting structure and the first electrode layer are formed through the same patterning process, and the light reflecting structure is not electrically connected with the first electrode layer.
As an alternative implementation of the embodiment of the present invention, the reflector block is formed of a metal material.
As an alternative implementation of the embodiment of the present invention, the reflector block is formed of silver or aluminum.
As an optional implementation manner of the embodiment of the present invention, the light reflection blocks are arranged in an array along a pixel row and a pixel column direction of the organic light emitting display;
the length of the light reflecting block in the pixel row direction is more than 0.5um and less than 2um; the length of the light reflecting block in the pixel column direction is more than 0.5um and less than 2um; the height of the reflecting block is more than 0.3um and less than 0.5um; the distance between the adjacent reflecting blocks is more than 1um and less than 5um.
As an alternative implementation manner of the embodiment of the present invention, the light reflecting block is cubic or hemispherical.
As an optional implementation manner of the embodiment of the present invention, a plurality of imaging apertures are disposed in the light-transmitting area;
the photosensitive device comprises a plurality of photosensitive diodes;
the plurality of light-sensing diodes are respectively positioned in the orthographic projection of one imaging aperture, and the reflecting block is not overlapped with the orthographic projection of the imaging aperture.
As an alternative implementation manner of the embodiment of the present invention, the organic light emitting display further includes: a substrate;
the light resistance layer and the photosensitive device are arranged on the first side of the substrate, and the electroluminescent layer and the reflecting structure are arranged on the second side of the substrate;
or alternatively;
the photoresistance layer, the photosensitive device, the electroluminescent layer and the reflecting structure are arranged on the same side of the substrate.
The organic light emitting display provided by the embodiment of the invention comprises: the light-sensitive device comprises a light-sensitive layer, a light-sensitive device, an electroluminescent layer and a light-reflecting structure. The light transmitting area is arranged on the light resistance layer, the light transmitting area is positioned in the pixel defining area of the organic light-emitting display, the photosensitive device is arranged below the light resistance layer and positioned in the orthographic projection of the light transmitting area, the electro-luminescence layer is arranged above the light resistance layer and positioned in the pixel area of the organic light-emitting display, the light reflecting structure is arranged above the light resistance layer and comprises a plurality of light reflecting blocks which are arranged in an array manner, and the light reflecting blocks are positioned in the pixel defining area of the organic light-emitting display.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures.
Fig. 1 is one of sectional views of an organic light emitting display according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a pixel defining region, a pixel region and a light transmitting region according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an organic light emitting display according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the electroluminescent layer and the reflective block according to an embodiment of the present invention;
FIG. 5 is a second cross-sectional view of an organic light emitting display according to an embodiment of the present invention;
FIG. 6 is a third cross-sectional view of an organic light emitting display according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a reflector block according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a light-transmitting aperture and a light-sensing diode according to an embodiment of the present invention;
FIG. 9 is a cross-sectional view of an organic light emitting display according to an embodiment of the present invention;
FIG. 10 is a fifth cross-sectional view of an organic light emitting display according to an embodiment of the present invention;
fig. 11 is a cross-sectional view of an organic light emitting display according to an embodiment of the present invention.
Reference numerals:
11-a photoresist layer; 12-a photosensitive device; 13-an electroluminescent layer; 14-a light reflecting structure; 15-a planarization layer;
16-a pixel defining layer; 17-a first electrode layer; 18-a second electrode layer; 19-a substrate;
110-pixel spacing; 111-a polarizer; 112-a touch layer; a protective layer-113;
101-a light-transmitting region; 102-a pixel defining area; 103-pixel area; 141-a reflector block;
81-a light-transmitting aperture; 82-light-sensitive diode.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the invention, are intended to be within the scope of the invention.
In embodiments of the invention, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion. Furthermore, in the description of the embodiments of the present invention, unless otherwise indicated, the meaning of "plurality" means two or more.
An embodiment of the present invention provides an organic light emitting display, and referring to fig. 1 and 2, the organic light emitting display provided in the embodiment of the present invention includes:
a photoresist layer 11, a light transmitting region 101 is disposed on the photoresist layer 11, and the light transmitting region 101 is located in a Pixel definition (Pixel definition) region 102 of the organic light emitting display.
A photosensitive device 12 disposed below the photoresist layer 11 and located within the orthographic projection of the light-transmitting region 110;
an electroluminescent (Electro Luminescent, EL) layer 13 disposed above the photoresist layer 11 and within the pixel region 103 of the organic light emitting display;
the light reflecting structure 14 is disposed above the photoresist layer 11, and includes a plurality of light reflecting blocks 141 arranged in an array, and the light reflecting blocks 141 are all located in the pixel defining area 102 of the organic light emitting display.
The arrangement of the reflective blocks 141 in the embodiment of the present invention is not limited.
The fingerprint acquisition principle of the organic light emitting display provided by the embodiment of the invention is described below.
Referring to fig. 3, the light emitted from the electroluminescent layer 13 can be divided into two main parts: the part is as follows: light propagating toward the display surface of the organic display (as shown in fig. 3a, 3b, and 3 c), the other part is: light propagating to the back and side of the organic display (as shown at 3e, 3d in fig. 3). Wherein, a part of the light rays transmitted to the display surface of the organic display enters the organic display again after being reflected by an object (the finger is taken as an example in fig. 3) positioned on the display surface of the organic display, and because the angle between the part of the light rays reflected by the object positioned on the display surface of the organic display and the normal line of the reflecting block 141 is smaller, the light rays can pass through the light-resistant layer 11 and be received by the light-sensitive device 12 through the gap of the reflecting block 141 and the light-transmitting area 101 (as shown in 3a and 3b in fig. 3) or the light-transmitting area 101 passes through the light-resistant layer 11 and is received by the light-sensitive device 12 after being reflected by the reflecting block 141, and finally the light rays received by the light-sensitive device 12 are analyzed and processed to finish fingerprint acquisition; while a part of the light propagating to the back and side of the organic display is directly blocked and absorbed by the photoresist layer 11 (as shown in 3e in fig. 3), and a part of the light is blocked and absorbed by the photoresist layer 11 after being reflected by the light reflecting block 141, so that the light propagating to the back and side of the organic display is not received by the photosensitive device 12, and therefore, the embodiment of the invention can prevent the light emitted by the electroluminescent layer 11 of the organic light-emitting display from being directly received by the photosensitive device 12 through the light transmitting area on the light blocking layer 11, thereby avoiding affecting the recognition accuracy of the fingerprint recognition under the screen.
The organic light emitting display provided by the embodiment of the invention comprises: the light-sensitive device comprises a light-sensitive layer, a light-sensitive device, an electroluminescent layer and a light-reflecting structure. The light transmitting area is arranged on the light resistance layer, the light transmitting area is positioned in the pixel defining area of the organic light-emitting display, the photosensitive device is arranged below the light resistance layer and positioned in the orthographic projection of the light transmitting area, the electro-luminescence layer is arranged above the light resistance layer and positioned in the pixel area of the organic light-emitting display, the light reflecting structure is arranged above the light resistance layer and comprises a plurality of light reflecting blocks which are arranged in an array manner, and the light reflecting blocks are positioned in the pixel defining area of the organic light-emitting display.
As an alternative implementation manner of the embodiment of the present invention, the height of the light reflecting block 141 is greater than or equal to the height of the electroluminescent layer 13.
Referring to fig. 4 (a), if the height of the reflective block 141 is smaller than that of the electroluminescent layer 13, although the reflective block 141 can prevent a portion of the light emitted from the electroluminescent layer 13 from being directly received by the photosensitive device 12 through the light-transmitting region on the light-blocking layer 11 (as shown in fig. 4 a), a portion of the light is still received by the photosensitive device 12 through the light-transmitting region on the light-blocking layer 11 (as shown in fig. 4 b), which still affects the recognition accuracy of the fingerprint recognition under the screen. Referring to fig. b, if the height of the reflective block 141 is greater than or equal to the height of the electroluminescent layer 13, all the light directly emitted by the electroluminescent layer 13 cannot be received by the photosensitive device 12 through the light-transmitting area on the light-blocking layer 11 (as shown in fig. 4c and 4 d), so that the influence on the recognition accuracy of the fingerprint recognition under the screen can be completely avoided.
It should be noted that, in the above embodiment, the height of the light reflecting block 141 is greater than or equal to the height of the electroluminescent layer 13 means that: the distance from the top of the light reflecting block 141 to the reference horizontal plane is greater than or equal to the distance from the top of the electroluminescent layer 13 to the reference horizontal plane, but the size relationship between the thickness of the light reflecting block 141 (the distance from the top to the bottom of the light reflecting block) and the thickness of the electroluminescent layer 13 (the distance from the top to the bottom of the electroluminescent layer) is not limited in the embodiment of the present invention.
As an alternative implementation manner of the embodiment of the present invention, referring to fig. 5, the organic light emitting display further includes:
a Planarization Layer (PLN) 15, the Planarization layer 15 covering the photoresist layer 11, the electroluminescent layer 13 and the reflective structure 14 being disposed over the Planarization layer;
a pixel defining layer (Pixel Definition Layer, PDL) 16, the pixel defining layer 16 being disposed on the planarization layer 15 and within the pixel defining area 102.
As an alternative implementation manner of the embodiment of the present invention, referring to fig. 6, the organic light emitting display further includes:
a first electrode layer 17 located under the electroluminescent layer 13 and a second electrode layer 18 located under the electroluminescent layer 13;
the light reflecting structure 14 and the first electrode layer 17 are formed by the same patterning process, and the light reflecting structure 14 is not electrically connected to the first electrode layer 17.
Specifically, the first electrode layer 17 may be an anode of the organic light emitting display or a cathode of the organic light emitting display. When the first electrode layer 17 is the anode of the organic light emitting display, the second electrode layer 18 is the cathode of the organic light emitting display, and when the first electrode layer 17 is the cathode of the organic light emitting display, the second electrode layer 18 is the anode of the organic light emitting display.
It should be noted that, the reflective structure 14 and the first electrode layer 17 are formed by the same patterning process, so that the reflective structure 14 and the first electrode layer 17 are made of the same material, and since the first electrode layer 17 is located below the electroluminescent layer 13, the second electrode layer 18 is located above the electroluminescent layer 13, and the light emitted by the electroluminescent layer 13 needs to form a display screen and propagate outwards, the reflective structure 14 needs to reflect the light, so that the first electrode layer 17 needs to be made of a light-tight and conductive material, and the second electrode layer 18 needs to be made of a light-tight and conductive material. The second electrode layer 18 may be formed of indium tin oxide (Information Technology Outsourcing, ITO), for example.
Since the reflective structure 14 and the first electrode layer 17 are formed by the same patterning process, the above embodiment can save the process flow of separately manufacturing the reflective structure 14, thereby reducing the process flow and the manufacturing cost of the organic light emitting display.
As an alternative implementation of the embodiment of the present invention, the light reflecting block 141 is formed of a metal material.
The light reflecting structure 141 may be formed of silver (Ag) or aluminum (Al) aluminum, for example.
As an alternative implementation of the embodiment of the present invention, referring to fig. 7, the reflector block 141 is a cube (shown in (a) of fig. 7) or a hemispherical shape (shown in (b) of fig. 7).
Of course, based on the above embodiment, the light reflecting block 141 in the embodiment of the present invention may have other shapes, for example: a polyhedron.
As an alternative implementation manner of the embodiment of the present invention, the light reflecting blocks 141 are arranged in an array along the pixel row and pixel column directions of the organic light emitting display;
the length of the light reflecting block 141 in the pixel row direction is greater than 0.5um and less than 2um; the length of the light reflecting block in the pixel column direction is more than 0.5um and less than 2um; the height of the reflecting block is more than 0.3um and less than 0.5um; the distance between the adjacent reflecting blocks is more than 1um and less than 5um.
As an alternative implementation of the embodiment of the present invention, referring to fig. 8, a plurality of imaging holes 81 are disposed in the light-transmitting area 101; the photosensitive device 13 includes a plurality of photosensitive diodes 82; the plurality of photodiodes 82 are respectively located in the front projection of one of the imaging apertures 81, and the reflective block 141 is not overlapped with the front projection of the imaging aperture 81.
Further, on the basis of any one of the above embodiments, the organic light emitting display provided in the embodiment of the present invention further includes: a substrate 19.
Referring to fig. 9, the photoresist layer 11 and the photoreceptor 12 are disposed on a first side of the substrate 19, and the electroluminescent layer 13 and the light reflecting structure 14 are disposed on a second side of the substrate.
Namely, the photoresist layer 11 and the photoreceptor 12 are formed on the first side of the base 19, and the electroluminescent layer 13 and the light reflecting structure 14 are formed on the second side of the base 19.
Or alternatively;
referring to fig. 10, the photoresist layer 11, the photosensitive device 12, the electroluminescent layer 13, and the reflective structure 14 are disposed on the same side of the substrate 19.
Still further, referring to fig. 11, the organic light emitting display provided in the embodiment of the present invention may further include: pixel interval 110, polarizer 111, touch layer 112, and cover film 113.
Based on the same inventive concept, the embodiment of the invention also provides an electronic device, which comprises the organic light emitting display provided by any one of the embodiments.
The electronic device in the embodiment of the invention may be a mobile phone, a tablet computer (portable android device, PAD), a smart watch, a vehicle-mounted device, or the like.
Further, the electronic device provided by the embodiment of the invention may further include a processing and a memory, in addition to the organic light emitting display provided by the above embodiment.
The processor may be a central processing unit (CentralProcessingUnit, CPU), but may also be other general purpose processors, digital signal processors (DigitalSignalProcessor, DSP), application specific integrated circuits (ApplicationSpecificIntegratedCircuit, ASIC), off-the-shelf programmable gate arrays (Field-ProgrammableGateArray, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, etc., such as Read Only Memory (ROM) or flash memory (flashRAM). Memory is an example of a computer-readable medium.
Computer readable media include both non-transitory and non-transitory, removable and non-removable storage media. Storage media may embody any method or technology for storage of information, which may be computer readable instructions, data structures, program modules, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Disks (DVD) or other optical storage, magnetic cassettes, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transshipment) such as modulated data signals and carrier waves.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (8)

1. An organic light emitting display, comprising:
the organic light-emitting display comprises a light-resistant layer, a light-transmitting layer and a light-reflecting layer, wherein a light-transmitting area is arranged on the light-resistant layer and is positioned in a pixel defining area of the organic light-emitting display;
the photosensitive device is arranged below the photoresistance layer and is positioned in the orthographic projection of the light transmission area;
the electroluminescent layer is arranged above the photoresist layer and is positioned in the pixel area of the organic light-emitting display;
the light reflecting structure is arranged above the light resistance layer and comprises a plurality of light reflecting blocks which are arranged in an array manner, and the light reflecting blocks are all positioned in a pixel defining area of the organic light emitting display; the height of the reflecting block is larger than or equal to the height of the electroluminescent layer;
the organic light emitting display further includes:
a first electrode layer located below the electroluminescent layer and a second electrode layer located above the electroluminescent layer;
the light reflecting structure and the first electrode layer are formed through the same patterning process, and the light reflecting structure is not electrically connected with the first electrode layer.
2. The organic light-emitting display according to claim 1, further comprising:
the planarization layer is covered on the photoresist layer, and the electroluminescent layer and the reflecting structure are arranged above the planarization layer;
and the pixel defining layer is arranged on the planarization layer and is positioned in the pixel defining area.
3. The organic light emitting display of claim 1, wherein the light reflecting block is formed of a metal material.
4. An organic light emitting display according to claim 3, wherein the light reflecting block is formed of silver or aluminum.
5. The organic light emitting display of claim 1, wherein the light reflective blocks are arranged in an array along a pixel row and a pixel column direction of the organic light emitting display;
the length of the light reflecting block in the pixel row direction is more than 0.5um and less than 2um; the length of the light reflecting block in the pixel column direction is more than 0.5um and less than 2um; the height of the reflecting block is more than 0.3um and less than 0.5um; the distance between the adjacent reflecting blocks is more than 1um and less than 5um.
6. The organic light emitting display of claim 1, wherein the light reflecting block is cubic or hemispherical.
7. The organic light-emitting display according to claim 1, wherein,
a plurality of imaging small holes are formed in the light-transmitting area;
the photosensitive device comprises a plurality of photosensitive diodes;
the plurality of light-sensing diodes are respectively positioned in the orthographic projection of one imaging aperture, and the reflecting block is not overlapped with the orthographic projection of the imaging aperture.
8. The organic light-emitting display according to claim 1, further comprising: a substrate;
the light resistance layer and the photosensitive device are arranged on the first side of the substrate, and the electroluminescent layer and the reflecting structure are arranged on the second side of the substrate;
or alternatively;
the photoresistance layer, the photosensitive device, the electroluminescent layer and the reflecting structure are arranged on the same side of the substrate.
CN202010573631.8A 2020-06-22 2020-06-22 Organic light-emitting display Active CN111668387B (en)

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