CN111414830A - Fingerprint detection device, touch panel and electronic equipment - Google Patents
Fingerprint detection device, touch panel and electronic equipment Download PDFInfo
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- CN111414830A CN111414830A CN202010176927.6A CN202010176927A CN111414830A CN 111414830 A CN111414830 A CN 111414830A CN 202010176927 A CN202010176927 A CN 202010176927A CN 111414830 A CN111414830 A CN 111414830A
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- 238000001514 detection method Methods 0.000 title claims abstract description 44
- 239000010410 layer Substances 0.000 claims abstract description 187
- 239000002344 surface layer Substances 0.000 claims abstract description 77
- 238000003384 imaging method Methods 0.000 claims abstract description 32
- 239000000758 substrate Substances 0.000 claims description 23
- 239000002184 metal Substances 0.000 claims description 20
- 238000004806 packaging method and process Methods 0.000 claims description 11
- 239000010408 film Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 239000010409 thin film Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 7
- 239000013307 optical fiber Substances 0.000 description 11
- 230000003287 optical effect Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 230000010287 polarization Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
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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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- 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
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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- General Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Multimedia (AREA)
- Manufacturing & Machinery (AREA)
- Image Input (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention discloses a fingerprint detection device, a touch panel and electronic equipment, and aims to reduce the thickness of the fingerprint detection device. The invention discloses a method which comprises the following steps: fingerprint detection apparatus comprising: including the luminescent layer that is used for to finger emission light and the fingerprint sensing layer that is used for detecting finger fingerprint valley ridge, fingerprint sensing layer is located the luminescent layer below, still includes: the super surface layer is located between the light emitting layer and the fingerprint sensing layer, the super surface layer is provided with a sub-wavelength structure, the light emitting layer emits light to a finger, the super surface layer receives reflected finger fingerprint ridges and performs fingerprint imaging on the fingerprint sensing layer, and the fingerprint sensing layer detects the fingerprint imaging. Therefore, the thickness of the fingerprint detection device can be greatly reduced by adopting the super surface layer as the main body of fingerprint imaging.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a fingerprint detection device, a touch panel and electronic equipment.
Background
In recent years, with the rapid development of technologies, mobile products with biometric identification function gradually enter people's life and work, and the fingerprint technology is paid much attention by virtue of the unique identity characteristic, and the fingerprint identification technology is already applied to the mobile products.
in the prior art, most of O L ED (optically clear ED) under-screen fingerprint structures adopt an optical fiber imaging scheme, but the requirements of customers are difficult to meet due to the fact that optical fibers are thick.
therefore, how to reduce the thickness of the fingerprint structure under the O L ED screen becomes an urgent problem to be solved.
Disclosure of Invention
In view of this, embodiments of the present invention provide a fingerprint detection device, a touch panel and an electronic apparatus, which mainly aim to reduce the thickness of the fingerprint detection device.
In order to achieve the purpose, the invention mainly provides the following technical scheme:
In one aspect, an embodiment of the present invention provides a fingerprint detection device, including a light emitting layer for emitting light to a finger and a fingerprint sensing layer for detecting a ridge of a fingerprint of the finger, where the fingerprint sensing layer is located below the light emitting layer, and further including:
The super surface layer is located between the light emitting layer and the fingerprint sensing layer, the super surface layer is provided with a sub-wavelength structure, the light emitting layer emits light to a finger, the super surface layer receives reflected finger fingerprint ridges and performs fingerprint imaging on the fingerprint sensing layer, and the fingerprint sensing layer detects the fingerprint imaging.
In this solution, the super surface layer includes:
The grating layer consists of a metal grating;
A base layer disposed below the grating layer.
In the technical scheme, the substrate layer is an organic film material.
In the technical scheme, the base layer is a silicon wafer.
In the technical scheme, the method further comprises the following steps:
The first shading layer is arranged on the base layer, the metal grid is located in the middle area above the base layer, and the first shading layer is located on two sides of the metal grid.
In this technical solution, the fingerprint sensing layer includes:
A plurality of fingerprint sensors, each of said fingerprint sensors comprising a photodiode and a thin film transistor switch;
The fingerprint sensing substrate, the fingerprint sensing substrate sets up a plurality of fingerprint sensor below.
In the technical scheme, the method further comprises the following steps:
A second light-shielding layer disposed below the base layer and corresponding to the first light-shielding layer;
The filter layer is arranged on one side, close to the super-surface layer, of the fingerprint sensing layer.
In the technical scheme, the method further comprises the following steps:
the O L ED base layer is arranged on one side, close to the super surface layer, of the light emitting layer in a laminated mode;
The packaging layer is stacked on one side, far away from the super surface layer, of the light emitting layer;
The circular polarizer is arranged on one side, away from the light emitting layer, of the packaging layer in a laminated mode;
The shading lens is arranged on one side, away from the packaging layer, of the circular polarizer in a laminated mode, and the fingerprint finger is pressed on the shading lens.
In another aspect, the present invention further provides a touch panel, which includes the fingerprint detection apparatus as described above.
In still another aspect, the present invention further provides an electronic device including the finger touch panel as described above.
The invention provides a fingerprint detection device, a touch panel and electronic equipment, wherein the fingerprint detection device comprises a luminous layer, a fingerprint sensing layer and a super surface layer, the super surface layer is arranged below the luminous layer, the fingerprint sensing layer is arranged below the super surface layer, when a finger is pressed on the fingerprint detection device, the luminous layer emits light to the direction of the finger, the light is reflected after reaching the finger pressing position, so that the finger valley ridge is reflected to the super surface layer, the super surface layer has a sub-wavelength structure, so that the finger valley ridge is subjected to fingerprint imaging through the super surface layer, compared with the prior art that the optical fiber is used as an imaging structure for the finger, the optical fiber imaging structure is composed of continuous curved surfaces and limited by factors such as material refractive index and machining process, the modulation capability of the optical fiber is continuous and the range is limited, the invention uses the super surface layer as the fingerprint imaging structure, the super surface layer has the sub-wavelength structure, the optical path limitation in refraction optics can be broken, the sudden change of physical quantities such as phase, amplitude, polarization and the like can be realized, and the structures can be integrated on a plane to realize the complex function of planarization, thereby greatly reducing the thickness of the device.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
FIG. 1 is a schematic structural diagram of a fingerprint detection device according to the present invention;
FIG. 2 is a schematic structural diagram of another fingerprint detection apparatus provided in the present invention;
FIG. 3 is a schematic structural diagram of a fingerprint sensor according to the present invention;
FIG. 4 is a schematic diagram of a fingerprint sensor and a first light-shielding layer according to the present invention;
The invention has the following reference numerals:
the fingerprint detection device comprises a fingerprint detection device 1, a light emitting layer 12, a fingerprint sensing layer 14, a fingerprint sensor 142, a fingerprint sensing substrate 144, a photosensitive diode 146, a thin film transistor opening 148, a super-surface layer 16, a metal grid 162, a substrate layer 164, a first light shielding layer 18, a second light shielding layer 20, a filter layer 22, an O L ED substrate layer 24, a packaging layer 26, a circular polarizer 28, a shading lens 30 and an optical adhesive layer 32.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be given to the embodiments, structures, features and effects of the fingerprint detection device, the touch panel and the electronic device according to the present invention with reference to the accompanying drawings and the preferred embodiments.
As shown in fig. 1 and 2, an embodiment of the present invention provides a fingerprint detection device 1, including a light emitting layer 12 for emitting light to a finger and a fingerprint sensing layer 14 for detecting fingerprint ridges of the finger, where the fingerprint sensing layer 14 is located below the light emitting layer 12, and further including:
The super surface layer 16 is located between the light emitting layer 12 and the fingerprint sensing layer 14, the super surface layer 16 has a sub-wavelength structure, after the light emitting layer 12 emits light to a finger, the super surface layer 16 receives reflected finger fingerprint ridges and performs fingerprint imaging on the fingerprint sensing layer 14, the finger fingerprint ridges are reflected to the super surface layer 16 to perform fingerprint imaging, and the fingerprint sensing layer 14 detects the fingerprint imaging. As shown in fig. 2 and fig. 3, in the embodiment of the present invention, the fingerprint detection device 1 includes a light emitting layer 12, a fingerprint sensing layer 14 and a super surface layer 16, wherein the super surface layer 16 is disposed below the light emitting layer 12, the fingerprint sensing layer 14 is disposed below the super surface layer 16, when a finger is pressed on the fingerprint detection device 1, the light emitting layer 12 emits light to the direction of the finger, the light is reflected after reaching the finger pressing position, so as to reflect the finger valley ridge to the super surface layer 16, the super surface layer 16 has a sub-wavelength structure, so as to image the finger valley ridge through the super surface layer 16, compared with the prior art that the optical fiber is used as an imaging structure for the finger, the optical fiber imaging structure is composed of a continuous curved surface, and is limited by the material refractive index, the machining process and other factors, and its modulation capability for light waves is generally continuous and limited in range, the invention uses the super surface layer 16 as a fingerprint imaging structure, the super surface layer 16 has a sub-wavelength structure, the optical path limitation in refraction optics can be broken, the sudden change of physical quantities such as phase, amplitude, polarization and the like can be realized, and the structures can be integrated on a plane to realize the complex function of planarization, thereby greatly reducing the thickness of the device, and the invention can greatly reduce the thickness of the fingerprint detection device 1 by using the super surface layer 16 as a main body of fingerprint imaging.
And the invention adopts the super surface structure, compared with the optical fiber structure in the prior art, the cost is reduced.
Referring to fig. 1 and 2, the present invention will be described in further detail with reference to the accompanying drawings and examples.
In an embodiment of the present invention, the super surface layer 16 includes:
A grating layer comprised of a metal grid 162;
A substrate layer 164, the substrate layer 164 being disposed below the grating layer.
In this embodiment, the super-surface layer 16 includes a grating layer disposed on a base layer 164, the grating layer having a sub-wavelength structure, and a base layer composed of a metal grating 162, thereby preventing finger ridges from crosstalk upon reflection onto the grating layer. Because the grating layer has a sub-wavelength structure, the optical path limitation in refraction optics can be broken, the sudden change of physical quantities such as phase, amplitude, polarization and the like can be realized, and the structures can be integrated on a plane, so that the planar complex function can be realized, namely the same function as a lens can be realized, and fingerprint imaging can be realized.
As shown in fig. 1, in the embodiment of the present invention, the substrate layer 164 is an organic film.
In this embodiment, super surface layer 16 includes grating layer and basal layer 164, and the grating layer comprises metal grid 162, and basal layer 164 is the organic film layer, and metal grid 162 sets up on organic film promptly, and basal layer 164 adopts thinner organic film, and thickness is 10um probably to the thickness of organic film is less, thereby super surface layer 16's thickness can be made within 100um, greatly reduced thickness, be favorable to the formation of ultra-thin super surface structure.
As shown in fig. 2, in the embodiment of the present invention, the substrate layer 164 is a silicon wafer.
In this embodiment, the super-surface layer 16 includes a grating layer and a substrate layer 164, the grating layer is composed of a metal grid 162, the substrate layer 164 is a silicon wafer, that is, the metal grid 162 is disposed on the silicon wafer, and the silicon wafer is polished to nm to um level.
As shown in fig. 1 and fig. 2, in the embodiment of the present invention, the method further includes:
And the first shading layer 18, wherein the first shading layer 18 is arranged on the base layer 164, the metal grid 162 is positioned in the middle area above the base layer 164, and the first shading layer 18 is positioned at two sides of the metal grid 162.
As shown in fig. 4, in this embodiment, when the fingerprint ridges of a finger are reflected toward the super-surface layer 16, since the super-surface layer 16 is located at the middle position above the base layer 164, large-angle incident light cannot be imaged through the super-surface layer 16, or the imaging quality is poor, so that the first light shielding layer 18 is disposed on the base layer 164, and the first light shielding layer 18 and the metal grids 162 are located on the same plane and are disposed on both sides of the metal grids, so as to shield the large-angle light from irradiating the fingerprint sensor 142, and block the imaging angle of the super-surface layer 16, so as to avoid affecting the imaging of adjacent imaging units of each metal grid 162 on the super-surface layer 16.
Preferably, the light-shielding layer is a diaphragm, which is an entity that plays a role in limiting light beams in the optical system. It may be the edge of a lens, a frame or a specially provided screen with holes. Its effect can be divided into two aspects, limiting the beam or limiting the size of the field of view.
As shown in fig. 3, in the embodiment of the present invention, the fingerprint sensing layer 14 includes:
A plurality of fingerprint sensors 142, each of said fingerprint sensors 142 comprising a photodiode 146 and a thin film transistor 148 switch;
A fingerprint sensing substrate 144, the fingerprint sensing substrate 144 disposed below the plurality of fingerprint sensors 142.
In this embodiment, the fingerprint sensing layer 14 includes a plurality of fingerprint sensors 142 and a fingerprint sensing substrate 144, the plurality of fingerprint sensors 142 are disposed on the fingerprint sensing substrate 144, each fingerprint sensor 142 includes a photodiode 146 and a tft 148 switch, when the fingerprint ridge of the finger is imaged by the super surface layer 16, when the fingerprint is scanned, each fingerprint sensor 142 scans and detects the fingerprint image of the finger at the corresponding position, due to the difference between the fingerprint ridges, the light source irradiates the finger to generate different reflections, so that the fingerprint ridges of the finger are imaged differently by the super surface layer 16, the light intensity reaching the photodiode 146 changes, different photocurrent differences are generated, and the current differences of the respective photodiode 146 devices are sequentially read under the control of the tft 148 switch, the detection of the fingerprint can be realized.
As shown in fig. 1 and fig. 2, in the embodiment of the present invention, the method further includes:
A second light shielding layer 20, the second light shielding layer 20 being provided below the base layer 164 and corresponding to the first light shielding layer 18;
A filter layer 22, said filter layer 22 being arranged on a side of said fingerprint sensing layer 14 adjacent to said super surface layer 16.
In this embodiment, the fingerprint detection device 1 further includes a second light shielding layer 20, and the second light shielding layer 20 is disposed below the base layer 164 of the super surface layer 16, so as to prevent crosstalk caused by multiple reflections of light between the fingerprint sensor 142 and the first light shielding layer 18.
Alternatively, if the first light-shielding layer 18 has a good light-absorbing effect, the second light-shielding layer 20 may not be provided.
As shown in fig. 1 and 2, in this embodiment, the fingerprint detection device 1 further includes a filter layer 22, the filter layer 22 is disposed on a side of the fingerprint sensing layer 14 close to the super surface layer 16, that is, the filter layer 22 is disposed between the fingerprint sensing layer 14 and the super surface layer 16, and the filter layer 22 is used for shielding the influence of stray light caused by ambient light.
Preferably, the filter layer 22 is a filter material coated on the fingerprint sensing layer 14.
In the embodiment of the present invention, the method further includes:
an O L ED base layer 24, the O L ED base layer 24 being stacked on a side of the light emitting layer 12 close to the super surface layer 16;
An encapsulation layer 26, wherein the encapsulation layer 26 is stacked and arranged on the side of the light-emitting layer 12 far away from the super surface layer 16;
The circular polarizer 28 is laminated on one side of the packaging layer 26 away from the light-emitting layer 12;
And the light shielding lens 30 is arranged on one side of the circular polarizer 28, which is far away from the packaging layer 26 in a laminated mode, and the finger is pressed on the light shielding lens 30.
as shown in fig. 1 and fig. 2, in this embodiment, the fingerprint detection device 1 further includes an O L ED substrate layer 24, a packaging layer 26, a circular polarizer 28, and a light shielding lens 30, wherein the fingerprint detection device 1 is sequentially stacked from top to bottom with the light shielding lens 30, the circular polarizer 28, the packaging layer 26, the light emitting layer 12, the O L ED substrate layer 24, the super surface layer 16, the second light shielding layer 20, the filter layer 22, and the fingerprint sensing layer 14, when a finger of a user presses on the light shielding lens 30, the light emitting layer 12 emits light toward the finger, the light is reflected after reaching the finger, so as to perform fingerprint imaging on the super surface layer 16, the fingerprint sensing layer 14 located below the super surface layer 16 performs fingerprint imaging through the respective metal grids 162 on the super surface layer 16, the super surface layer 16 has a sub-wavelength structure, so as to break the optical path limitation in refraction optics, and realize abrupt changes of physical quantities such as phase, amplitude, polarization, and the structures can be integrated in a plane, so as to greatly reduce the thickness of the device, so as to realize the complex function of the super surface layer 16 as to detect multiple fingerprint imaging according to the metal grids 162 of the fingerprint sensing device, so as to detect multiple fingerprint imaging of the fingerprint 14.
optionally, the light emitting layer 12 includes an oeld pixel circuit and a light emitting structure, and since the super surface material has a requirement on the light wavelength range, the wavelength of light is within 100nm, and preferably, monochromatic light oeld is used as the light source.
In this embodiment, an optical glue layer 32 is disposed on the super surface layer 16 near the fingerprint sensing layer 14 for fixing the super surface layer 16 and the fingerprint sensing layer, and optionally, the optical glue layer 32 is disposed on the side of the second light shielding layer 20 and the filter layer 22 facing the super surface layer 16.
in this embodiment, an optical adhesive layer 32 is also disposed on the O L ED substrate layer 24 facing the super surface layer 16, for fixing the O L ED substrate layer 24 and the super surface layer 16, and the thickness is about 25 um.
On the other hand, the present invention further provides a touch panel, which includes the fingerprint detection device as described above, the fingerprint detection device is disposed on the touch panel, and the detection of the fingerprint can be achieved by pressing the fingerprint detection device on the touch panel with the finger of the user.
The present invention further provides an electronic device, which includes the touch panel as described above, and the electronic device includes all the technical features of the touch panel as described above, so that all the beneficial technical effects of the touch panel are included, and are not described herein again.
The invention provides a fingerprint detection device, a touch panel and electronic equipment, wherein the fingerprint detection device comprises a luminous layer, a fingerprint sensing layer and a super surface layer, the super surface layer is arranged below the luminous layer, the fingerprint sensing layer is arranged below the super surface layer, when a finger is pressed on the fingerprint detection device, the luminous layer emits light to the direction of the finger, the light is reflected after reaching the finger pressing position, so that the finger valley ridge is reflected to the super surface layer, the super surface layer has a sub-wavelength structure, so that the finger valley ridge is subjected to fingerprint imaging through the super surface layer, compared with the prior art that the optical fiber is used as an imaging structure for the finger, the optical fiber imaging structure is composed of continuous curved surfaces and limited by factors such as material refractive index and machining process, the modulation capability of the optical fiber is continuous and the range is limited, the invention uses the super surface layer as the fingerprint imaging structure, the super surface layer has the sub-wavelength structure, the optical path limitation in refraction optics can be broken, the sudden change of physical quantities such as phase, amplitude, polarization and the like can be realized, and the structures can be integrated on a plane to realize the complex function of planarization, thereby greatly reducing the thickness of the device.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A fingerprint detection device, includes the luminescent layer that is used for to finger emission light and is used for the fingerprint sensing layer to finger fingerprint valley ridge detection, fingerprint sensing layer is located the luminescent layer below, its characterized in that still includes:
The super surface layer is located between the light emitting layer and the fingerprint sensing layer, the super surface layer is provided with a sub-wavelength structure, the light emitting layer emits light to a finger, the super surface layer receives reflected finger fingerprint ridges and performs fingerprint imaging on the fingerprint sensing layer, and the fingerprint sensing layer detects the fingerprint imaging.
2. The fingerprint detection apparatus of claim 1, wherein the super surface layer comprises:
The grating layer consists of a metal grating;
A base layer disposed below the grating layer.
3. The fingerprint detection apparatus according to claim 2,
The base layer is an organic film material.
4. The fingerprint detection apparatus according to claim 2,
The substrate layer is a silicon wafer.
5. The fingerprint detection device according to claim 2, further comprising:
The first shading layer is arranged on the base layer, the metal grid is located in the middle area above the base layer, and the first shading layer is located on two sides of the metal grid.
6. The fingerprint sensing device of claim 1, wherein the fingerprint sensing layer comprises:
A plurality of fingerprint sensors, each of said fingerprint sensors comprising a photodiode and a thin film transistor switch;
The fingerprint sensing substrate, the fingerprint sensing substrate sets up a plurality of fingerprint sensor below.
7. The fingerprint detection device according to claim 5, further comprising:
A second light-shielding layer disposed below the base layer and corresponding to the first light-shielding layer;
The filter layer is arranged on one side, close to the super-surface layer, of the fingerprint sensing layer.
8. The fingerprint detection device according to claim 1, further comprising:
the O L ED base layer is arranged on one side, close to the super surface layer, of the light emitting layer in a laminated mode;
The packaging layer is stacked on one side, far away from the super surface layer, of the light emitting layer;
The circular polarizer is arranged on one side, away from the light emitting layer, of the packaging layer in a laminated mode;
And the shading lens is stacked on one side of the circular polarizer, which is far away from the packaging layer, and the finger is pressed on the shading lens.
9. A touch panel comprising the fingerprint detection device according to any one of claims 1 to 8.
10. An electronic device comprising the touch panel of claim 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010176927.6A CN111414830B (en) | 2020-03-13 | 2020-03-13 | Fingerprint detection device, touch panel and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010176927.6A CN111414830B (en) | 2020-03-13 | 2020-03-13 | Fingerprint detection device, touch panel and electronic equipment |
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| CN111414830A true CN111414830A (en) | 2020-07-14 |
| CN111414830B CN111414830B (en) | 2024-07-19 |
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| CN112558195A (en) * | 2020-12-15 | 2021-03-26 | 维沃移动通信有限公司 | Optical sheet, image pickup module, and electronic apparatus |
| CN113093424A (en) * | 2021-03-30 | 2021-07-09 | 武汉华星光电技术有限公司 | Display panel and preparation method thereof |
| CN113934039A (en) * | 2021-10-29 | 2022-01-14 | 武汉华星光电技术有限公司 | Display device |
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| CN111414830B (en) | 2024-07-19 |
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