CN110059562B - Display device and electronic device - Google Patents
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- CN110059562B CN110059562B CN201910205514.3A CN201910205514A CN110059562B CN 110059562 B CN110059562 B CN 110059562B CN 201910205514 A CN201910205514 A CN 201910205514A CN 110059562 B CN110059562 B CN 110059562B
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- 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
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
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- Optics & Photonics (AREA)
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Abstract
A display device comprises a display screen and an optical fingerprint module, wherein the optical fingerprint module is arranged on one side of the display screen and comprises a light sensing layer, a lens layer and a substrate base plate, the light sensing layer is provided with a plurality of light sensing elements, the light sensing layer is arranged on the substrate base plate, the lens layer is arranged between the display screen and the light sensing layer, and the substrate base plate is made of a glass material or a resin material; an electronic device comprising a display device as described above. According to the display device and the electronic device, the optical fingerprint module is arranged below the display screen, so that local fingerprint identification or half-screen fingerprint identification or full-screen fingerprint identification under the screen can be realized.
Description
Technical Field
The invention relates to the technical field of fingerprint identification, in particular to a display device and an electronic device.
Background
With the wide rise of full-screen mobile phones, the fingerprint identification technology is also correspondingly improved continuously, at present, the fingerprint identification technology mainly comprises three categories of capacitive fingerprint identification, optical fingerprint identification and ultrasonic fingerprint identification, a capacitive fingerprint identification module is carried on the full-screen mobile phone and needs to arrange a capacitive fingerprint identification chip below a screen, and the penetration capacity of the capacitive fingerprint identification chip limits the realization of fingerprint identification under the screen; the ultrasonic fingerprint identification module has high penetration capacity and high anti-interference capacity, but the technology is still immature, the identification speed is unstable, and the fingerprint identification experience is poor in the aspect of the application that the conventional ultrasonic fingerprint identification module carries a full-screen mobile phone; and the problem that the optical fingerprint identification module does not have the signal to pierce through, as long as the screen light-permeable just can set up the optical fingerprint chip in the screen below, realizes the application that the optical fingerprint identification module carried on comprehensive screen cell-phone.
Therefore, to realize fingerprint identification under the full screen, present optics fingerprint module is the best selection, and different consumers have different demands to local fingerprint identification under the screen, half screen fingerprint identification under the screen and full screen fingerprint identification under the screen, and based on cost pressure, low-cost scheme is imperative.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a display device and an electronic device to meet the identification requirements of partial fingerprint identification, half-screen fingerprint identification and full-screen fingerprint identification under a full-screen.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
based on one aspect of the invention, the display device comprises a display screen and an optical fingerprint module, wherein the display screen comprises a touch surface, the optical fingerprint module is arranged on one side of the display screen opposite to the touch surface, the optical fingerprint module comprises a light sensation layer, a lens layer and a substrate base plate, the light sensation layer is provided with a plurality of light sensation elements, the light sensation layer is arranged on the substrate base plate, the lens layer is arranged between the display screen and the light sensation layer, and the substrate base plate is made of a glass material or a resin material.
According to the display device, the optical fingerprint module is arranged below the OLED display screen, the lens layer is additionally arranged between the light sensing layer and the display screen in the optical fingerprint module, light reflected by a pressing finger can be better gathered on the light sensing element, meanwhile, the optical fingerprint module adopts glass or resin as the substrate base plate, the cost is low, the size of the optical fingerprint module can be adjusted relative to the size of the screen, and the identification requirements of partial fingerprint identification, half-screen fingerprint identification or full-screen fingerprint identification under the full-screen can be met.
In one embodiment, the lens layer includes a plurality of light-transmissive light-gathering portions and a plurality of light-opaque spacing portions, and one spacing portion is disposed between every two adjacent light-gathering portions.
In one embodiment, the display panel includes a display panel, the display panel is an organic light emitting diode display panel, the display panel includes a light emitting layer, the light emitting layer includes a plurality of pixel units, and a pixel unit gap is provided between adjacent pixel units.
In one embodiment, the light-condensing portions and the pixel unit gaps are distributed in a one-to-one correspondence, and the pixel unit gaps and the photosensitive elements are distributed in a one-to-one correspondence.
In one embodiment, each of the light-condensing portions is distributed corresponding to a plurality of the pixel unit gaps, and each of the light-condensing portions is distributed corresponding to a plurality of the photosensitive elements, or each of the light-condensing portions is distributed corresponding to a plurality of the pixel unit gaps, and the light-condensing portions and the photosensitive elements are distributed in a one-to-one correspondence.
In one embodiment, the light-condensing portion includes an incident end close to one side of the display screen and an exit end close to one side of the substrate, the incident end includes a first transparent area with a convex spherical shape and a first opaque area distributed around the edge of the first transparent area, the exit end includes a second transparent area with a convex spherical shape and a second opaque area distributed around the edge of the second transparent area, and the first transparent area is opposite to the second transparent area.
In one embodiment, the substrate is further provided with a circuit layer, the circuit layer is provided with a signal processing circuit and a row and column selection element, the photosensitive element, the signal processing circuit and the row and column selection element are sequentially connected, the signal processing circuit is used for receiving and processing the electric signals output from the photosensitive element, the row and column selection element is further connected to a row and column control circuit, and the row and column selection element is used for controlling whether to output the electric signals output from the signal processing circuit to a signal output line according to signals of the row and column control circuit.
In one embodiment, the signal processing circuit comprises a reset element, a filter element and a signal following element; the control end, the input end and the output end of the filter element are respectively connected with the control ends of the denoising control circuit, the photosensitive element and the signal following element, and the filter element is used for filtering out a dark current signal output by the photosensitive element under the control of the denoising control circuit; the input end, the control end and the output end of the reset element are respectively connected with a power supply, a reset control circuit and the output end of the filter element, and the reset element is used for resetting the circuit voltage of the circuit unit under the control of the reset control circuit; the control end, the input end and the output end of the signal following element are respectively connected with the output end of the reset element, the power supply and the input end of the row-column selection element, and the signal following element is used for carrying out following amplification on the electric signal output by the filter element and outputting the obtained following amplified signal to the row-column selection element.
In one embodiment, the substrate is further provided with a circuit layer, the circuit layer is provided with a thin film transistor, a control signal line and a data signal line, a first electrode of the photosensitive element is connected with a reference voltage data line, a gate of the thin film transistor is connected with the control signal line, the thin film transistor is used for controlling the switching of the photosensitive element, the data signal line is used for reading a signal current generated by photoelectric conversion of the photosensitive element, and a drain of the thin film transistor is connected with a second electrode of the photosensitive element.
According to still another aspect of the present invention, there is provided an electronic device including the display device as described above.
According to the electronic device provided by the invention, the optical fingerprint module is arranged below the display screen, so that local fingerprint identification or half-screen fingerprint identification or full-screen fingerprint identification under the screen can be realized.
Other advantages of the present invention will be described in detail in the following detailed description of the invention, which refers to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a display device according to an embodiment of the present invention;
FIG. 3 is an enlarged view of the structure at layer A of the lens shown in FIG. 2;
FIG. 4 is a schematic structural diagram of a fingerprint identification unit in the optical fingerprint module according to an embodiment of the display device of the invention;
FIG. 5 is a schematic structural diagram of a fingerprint identification unit in an optical fingerprint module according to another embodiment of the display device of the present invention;
FIG. 6 is a schematic view of a distribution of an off-screen local optical fingerprint module according to an embodiment of the present invention;
FIG. 7 is a schematic view of a distribution of a bottom half-screen optical fingerprint module according to an embodiment of the present invention;
FIG. 8 is a diagram illustrating a distribution of full-screen optical fingerprint modules under a screen according to an embodiment of the electronic device of the present invention.
Description of reference numerals: 10. display screen 12, upper cover 13, touch surface 15, light emitting layer 151, pixel unit 153, pixel unit gap 20, optical fingerprint module 21, light sensing layer 211, light sensing element 23, lens layer 231, light gathering part 233, spacing part 234, incident end 235, emergent end 236, first light-transmitting region 237, first light-shielding region 238, second light-transmitting region 239, second light-shielding region 25, substrate 27, circuit layer 271, signal processing circuit 2713, reset element 2715, filter element 2717, signal following element 273, row and column selection element 275, thin film transistor 277, control signal line 279, data signal line 61, finger and other elements
Detailed Description
To further explain the technical solutions of the present invention, the present invention will be described in detail below with reference to the accompanying drawings, in which like reference numerals refer to like parts.
The invention provides a display device, which comprises a display screen 10 and an optical fingerprint module 20, wherein the display screen 10 comprises a touch surface 13, and the optical fingerprint module 20 is arranged on one side of the display screen 10 opposite to the touch surface 13.
Referring to fig. 1 and 2 in combination, the display panel 10 includes an upper cover plate 12 and a display panel, the display panel includes a light emitting layer 15, the light emitting layer 15 includes a plurality of pixel units 151, and a pixel unit gap 153 is disposed between adjacent pixel units 151. Specifically, in the embodiment, the display panel is an organic light emitting diode display panel (OLED display panel). It is understood that the display panel further includes a cathode layer (not shown), an anode layer (not shown), a hole transport layer (not shown), and an electron transport layer (not shown), the light emitting layer 15 is located between the cathode layer and the anode layer, and the detailed structure of the display panel is not described herein again.
The optical fingerprint module 20 comprises a light sensing layer 21, a lens layer 23, a substrate base plate 25 and a circuit layer 27, wherein the light sensing layer 21 and the circuit layer 27 are arranged on the substrate base plate 25, the lens layer 23 is arranged between the display screen 10 and the light sensing layer 21, and the substrate base plate 25 is made of a glass material or a resin material.
In this embodiment, the photosensitive layer 21 has a plurality of photosensitive elements 211.
Referring to fig. 2 and 3, in the present embodiment, the lens layer 23 includes a plurality of light-transmissive light-gathering portions 231 and a plurality of light-opaque spacing portions 233, and a spacing portion 233 is disposed between every two adjacent light-gathering portions 231. The light-condensing portion 231 includes an incident end 234 near one side of the display screen 10 and an exit end 235 near one side of the substrate, the incident end 234 includes a first light-permeable region 236 having a convex spherical shape and a first light-impermeable light-shielding region 237 disposed around an edge of the first light-permeable region 236, the exit end 235 includes a second light-permeable region 238 having a convex spherical shape and a second light-impermeable light-shielding region 239 disposed around an edge of the second light-permeable region 238, and the first light-permeable region 236 is opposite to the second light-permeable region 238. Since the first light-transmitting area 236 and the second light-transmitting area 238 are both convex, the light reflected by the finger 61 enters the lens layer 23 from the first light-transmitting area 236 and then exits the lens layer 23 through the second light-transmitting area 238, so as to form an image on the light-sensing layer 21. The first light-shielding region 237 and the second light-shielding region 239 are non-convex light-tight regions, and are coated with a layer of light-tight ink film to prevent halo due to stray light interference and ensure the definition of the fingerprint pattern formed on the light-sensing layer 21.
Fig. 2 is a schematic cross-sectional view illustrating an embodiment of a display device according to the present invention, wherein lines with arrows in fig. 2 indicate light rays, and directions of the arrows indicate directions of propagation of the light rays, specifically, the display screen 10 is an OLED display screen, after the display screen 10 is lit, when a finger 61 of a user presses on a screen surface, each pixel unit 151 in the light-emitting layer 15 serves as a self-light-emitting source to emit an incident light ray upward, the incident light ray strikes an epidermal layer of the pressed finger 61 to generate a reflected light ray, and the reflected light ray sequentially passes through a pixel unit gap 153 and a light-focusing portion 231 and then irradiates the light-sensing layer 21 for collection by the light-sensing element 211.
In the present embodiment, each light-gathering portion 231 is respectively distributed corresponding to the plurality of pixel unit gaps 153, and each light-gathering portion 231 is respectively distributed corresponding to the plurality of light-sensing elements 211. Each light condensing portion 231 is used as an independent optical path system, and light reflected when the finger 61 presses the touch surface 13 passes through the pixel unit gap 153 and is condensed onto the corresponding multiple light sensing elements 211 by the light condensing portion 231.
In other embodiments, the light-condensing portions 231 and the pixel unit gaps 153 may be distributed in a one-to-one correspondence, and the pixel unit gaps 153 and the light-sensing elements 211 are distributed in a one-to-one correspondence, so that one pixel unit gap 153 corresponds to one light-condensing portion 231 and further corresponds to one light-sensing element 211, and the light is reflected by the surface of the pressing finger 61 and then sequentially irradiates the corresponding light-sensing element 211 through the pixel unit gaps 153 and the light-condensing portions 231. In other embodiments, each light-collecting part 231 may be distributed corresponding to a plurality of pixel unit gaps 153, and the light-collecting parts 231 may be distributed corresponding to a plurality of light-sensing elements 211, so as to form a light-collecting system in which a plurality of pixel unit gaps 153 are distributed corresponding to one light-collecting part 231 and one light-collecting part 231 is distributed corresponding to one light-sensing element 211.
In this embodiment, a circuit layer 27 is disposed on the substrate 25 of the optical fingerprint module 20, a plurality of fingerprint identification units are distributed on the circuit layer 27 in a matrix, as shown in fig. 4, each fingerprint identification unit includes a signal processing circuit 271 and a row and column selection element 273, the photosensitive element 211, the signal processing circuit 271 and the row and column selection element 273 are sequentially connected, the signal processing circuit 271 is configured to receive and process an electrical signal output from the photosensitive element 211, the row and column selection element 273 is further connected to a row and column control circuit, and the row and column selection element 273 is configured to control whether to output the electrical signal output from the signal processing circuit 271 to a signal output line according to a signal of the row and column control circuit.
Specifically, the signal processing circuit 271 includes a reset element 2713, a filter element 2715, and a signal following element 2717; the control end, the input end and the output end of the filter element 2715 are respectively connected to the noise removal control circuit, the photosensitive element 211 and the control end of the signal following element 2717, and the filter element 2715 is used for filtering the dark current signal output by the photosensitive element 211 under the control of the noise removal control circuit; the input end, the control end and the output end of the reset element 2713 are respectively connected with the power supply, the reset control circuit and the output end of the filter element 2715, and the reset element 2713 is used for resetting the circuit voltage of the circuit unit where the reset element is under the control of the reset control circuit; the control, input and output terminals of the signal follower element 2717 are connected to the output terminal of the reset element 2713, the power supply and the input terminal of the row and column selection element 273, respectively, and the signal follower element 2717 is configured to follower-amplify the electrical signal output from the filter element 2715 and output the resulting follower-amplified signal to the row and column selection element 273. Then, the row/column selection element 273 controls the output of the electric signal output from the signal processing circuit 271 to the signal output line in accordance with the signal of the row/column control circuit. The row and column selection element 273, the reset element 2713, the filter element 2715 and the signal follower element 2717 are MOS transistors.
In other embodiments, the optical fingerprint module 20 may further employ a thin film transistor as a control element of each fingerprint identification unit, and specifically, the circuit layer 27 of the optical fingerprint module 20 is provided with a plurality of thin film transistors 275, a plurality of control signal lines 277 and a plurality of data signal lines 279, and the plurality of control signal lines 277 and the plurality of data signal lines 279 are insulated from each other and cross to define a plurality of fingerprint identification units distributed in a matrix. As shown in fig. 5, each fingerprint recognition unit includes a photosensitive element 211 and a thin film transistor 275, a first electrode of the photosensitive element 211 is connected to a reference voltage data line (not shown), a gate of the thin film transistor 275 is connected to a control signal line 277, the thin film transistor 275 is used to control the switching of the photosensitive element 211, a data signal line 279 is used to read a signal current generated by photoelectric conversion of the photosensitive element 211, the data signal line 279 is connected to a source of the thin film transistor 275, and a drain of the thin film transistor 275 is connected to a second electrode of the photosensitive element 211. It is easy to know that in other embodiments, the data signal line 279 may be connected to the drain of the thin film transistor 275, and the source of the thin film transistor 275 may be connected to the second electrode of the photosensitive element 211. In this embodiment, the optical fingerprint module 20 further includes a peripheral circuit, the peripheral circuit includes a driving circuit, a signal readout chip and a flexible printed circuit board, the driving circuit is connected to the control signal lines 277 to control the voltage of each control signal line 277 so as to control the switch of the thin film transistor 275 in each fingerprint identification unit, the signal readout chip is connected to the data signal lines 279 to receive the electrical signals transmitted from the data signal lines 279, the signal readout chip is connected to the flexible printed circuit board, and the flexible printed circuit board is connected to the control system of the electronic device where the display device is located so as to implement communication between the optical fingerprint module 20 and the control system.
In the display device provided by the invention, the substrate base plate 25 of the optical fingerprint module 20 is made of glass or resin, and the glass or resin replaces a silicon wafer to be used as a substrate of a fingerprint acquisition circuit in the optical fingerprint module, so that the size of the optical fingerprint module 20 can be adjusted at will according to actual requirements.
Based on this, the invention also provides an electronic device, which comprises the display device. In this embodiment, the electronic device may be a full-screen mobile phone. Fig. 6 shows that local optical fingerprint module distributes the sketch map under the screen cell-phone screen of whole screen, and in an embodiment, optical fingerprint module 20 sets up a certain local position in the display screen 10 below of screen cell-phone screen of whole screen, and the corresponding distribution position of optical fingerprint module 20 on display screen 10 has fingerprint identification's function. In another embodiment, as shown in fig. 7, the optical fingerprint module 20 is half the size of the display screen 10 and is disposed on the lower half of the lower portion of the display screen 10 of the full-screen mobile phone, so that the range of the size of the lower half of the display screen 10 of the full-screen mobile phone can be used for fingerprint identification. In another embodiment, as shown in fig. 8, the optical fingerprint module 20 has the same size and shape as the display screen 10, is disposed below the display screen 10 of the full-screen mobile phone, and is disposed corresponding to the display screen 10, so that the fingerprint identification can be performed at any position on the display screen 10 of the full-screen mobile phone. According to the electronic device provided by the invention, the optical fingerprint module is arranged below the display screen, so that local fingerprint identification or half-screen fingerprint identification or full-screen fingerprint identification under the screen can be realized.
According to the display device provided by the invention, the optical fingerprint module is arranged below the OLED display screen, the lens layer is additionally arranged between the light sensing layer and the display screen in the optical fingerprint module, light reflected by a pressing finger can be better gathered on the light sensing element, meanwhile, the optical fingerprint module adopts glass or resin as the substrate base plate, the cost is lower, the size of the optical fingerprint module can be adjusted relative to the size of the screen, and the identification requirements of partial fingerprint identification, half-screen fingerprint identification or full-screen fingerprint identification under a full-screen can be met.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The display device is characterized by comprising a display screen (10) and an optical fingerprint module (20), wherein the optical fingerprint module (20) is arranged on one side of the display screen (10), the optical fingerprint module (20) comprises a light sensing layer (21), a lens layer (23) and a substrate base plate (25), the light sensing layer (21) is provided with a plurality of light sensing elements (211), the light sensing layer (21) is arranged on the substrate base plate (25), the lens layer (23) is arranged between the display screen (10) and the light sensing layer (21), the substrate base plate (25) is made of glass materials or resin materials, the substrate base plate (25) is further provided with a circuit layer (27), the light sensing elements (211) are connected to the circuit layer (27), and the lens layer (23) comprises a plurality of light-permeable light-gathering parts (231) and a plurality of light-impermeable spacing parts (233), the interval part (233) is arranged between every two adjacent light-condensing parts (231), each light-condensing part (231) comprises an incident end (234) close to one side of the display screen (10) and an emergent end (235) close to one side of the substrate, each incident end (234) comprises a convex spherical light-permeable first light-transmitting area (236) and a convex spherical light-impermeable first light-shielding area (237) distributed around the edge of the first light-transmitting area (236), each emergent end (235) comprises a convex spherical light-permeable second light-transmitting area (238) and a convex spherical light-impermeable second light-shielding area (239) distributed around the edge of the second light-transmitting area (238), and the first light-transmitting area (236) is opposite to the second light-transmitting area (238).
2. The display device according to claim 1, wherein the display screen (10) comprises a display panel, the display panel is an organic light emitting diode display panel, the display panel comprises a light emitting layer (15), the light emitting layer (15) comprises a plurality of pixel units (151), and a pixel unit gap (153) is provided between adjacent pixel units (151).
3. The display device according to claim 2, wherein the plurality of light-condensing portions (231) are distributed in one-to-one correspondence with the plurality of pixel unit gaps (153), and wherein the plurality of pixel unit gaps (153) are distributed in one-to-one correspondence with the plurality of photosensitive elements (211).
4. The display device according to claim 2, wherein each of the light-condensing portions (231) is respectively distributed corresponding to a plurality of the pixel unit gaps (153), and each of the light-condensing portions (231) is respectively distributed corresponding to a plurality of the light-sensing elements (211), or,
each light-condensing part (231) is respectively distributed corresponding to the plurality of pixel unit gaps (153), and the light-condensing parts (231) are distributed corresponding to the photosensitive elements (211) one by one.
5. The display device according to claim 1, wherein the circuit layer (27) is provided with a signal processing circuit (271) and a row and column selection element (273), the photosensitive element (211), the signal processing circuit (271) and the row and column selection element (273) are connected in sequence, the signal processing circuit (271) is used for receiving and processing the electrical signal output from the photosensitive element (211), the row and column selection element (273) is further connected to a row and column control circuit, and the row and column selection element (273) is used for controlling whether to output the electrical signal output from the signal processing circuit (271) to the signal output line according to the signal of the row and column control circuit.
6. The display device according to claim 5, wherein the signal processing circuit (271) comprises a reset element (2713), a filter element (2715), and a signal following element (2717);
the control end, the input end and the output end of the filter element (2715) are respectively connected with the noise removal control circuit, the photosensitive element (211) and the control end of the signal following element (2717), and the filter element (2715) is used for filtering dark current signals output by the photosensitive element (211) under the control of the noise removal control circuit;
the input end, the control end and the output end of the reset element (2713) are respectively connected with a power supply, a reset control circuit and the output end of the filter element (2715), and the reset element (2713) is used for resetting the circuit voltage of the circuit unit where the reset element is under the control of the reset control circuit;
the control end, the input end and the output end of the signal following element (2717) are respectively connected with the output end of the reset element (2713), the power supply and the input end of the row and column selection element (273), and the signal following element (2717) is used for following and amplifying the electric signal output by the filter element (2715) and outputting the obtained following and amplified signal to the row and column selection element (273).
7. The display device according to claim 1, wherein a circuit layer (27) is further provided on the substrate base plate (25), the circuit layer (27) is provided with a thin film transistor (275), a control signal line (277), and a data signal line (279), a first electrode of the photosensitive element (211) is connected to a reference voltage data line, a gate of the thin film transistor (275) is connected to the control signal line (277), the thin film transistor (275) is used to control switching of the photosensitive element (211), the data signal line (279) is used to read a signal current generated by photoelectric conversion of the photosensitive element (211), and a drain of the thin film transistor (275) is connected to a second electrode of the photosensitive element (211).
8. An electronic device characterized by comprising a display device according to any one of claims 1 to 7.
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| CN110728266A (en) * | 2019-10-30 | 2020-01-24 | 维沃移动通信（杭州）有限公司 | Display module and electronic equipment |
| CN112101270A (en) * | 2020-09-23 | 2020-12-18 | 福建华佳彩有限公司 | Display panel applied to fingerprint recognition under screen |
| CN112380964A (en) * | 2020-11-11 | 2021-02-19 | 京东方科技集团股份有限公司 | Photoelectric detection substrate and display device |
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| CN109037248A (en) * | 2017-06-08 | 2018-12-18 | 上海箩箕技术有限公司 | Imaging sensor and forming method thereof, fingerprint imaging mould group |
| CN109196525A (en) * | 2017-07-18 | 2019-01-11 | 深圳市汇顶科技股份有限公司 | Refuse the anti-spoofing sensing of false fingerprint pattern in optical sensor module under the screen for shielding upper fingerprint sensing |
| CN108073911A (en) * | 2017-12-30 | 2018-05-25 | 深圳信炜科技有限公司 | Photosensitive device, photosensitive module, display module and electronic equipment |
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