CN109765712A - Fingerprint recognition application method under a kind of screen of liquid crystal display - Google Patents
Fingerprint recognition application method under a kind of screen of liquid crystal display Download PDFInfo
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- CN109765712A CN109765712A CN201910211446.1A CN201910211446A CN109765712A CN 109765712 A CN109765712 A CN 109765712A CN 201910211446 A CN201910211446 A CN 201910211446A CN 109765712 A CN109765712 A CN 109765712A
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- liquid crystal
- crystal display
- hole
- screen
- fingerprint recognition
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Abstract
Fingerprint recognition application method under a kind of screen of liquid crystal display, it is characterised in that: punched on the reflector plate of backlight module under the screen of liquid crystal display, fingerprint identification module is set under hole, the diameter in the hole is 0.1-0.3mm.The liquid crystal display is layer structure, is followed successively by LCD display, polarization by reflection light brightness enhancement film, lenticule shape diffusion barrier, light guide plate and reflector plate from top to bottom.The configuration of the present invention is simple is realized and is easy, and by test of many times and calculating, diameter, number and the arrangement in hole are realized and optimized.
Description
Technical field
The present invention relates to fingerprint recognition application methods under a kind of screen of liquid crystal display.
Background technique
Mobile phone liquid crystal screen can be divided into: STN screen, TFT screen, TFD screen, UFB screen and OLED screen curtain.Liquid crystal
Display screen is layer structure, is followed successively by LCD display, prismatic brightness film, diffusion barrier, light guide plate and reflector plate from top to bottom.We
Common fingerprint identification technology is aobvious in the external addition fingerprint identification module of display screen, and in the fingerprint image of OLED display screen
It is applied in display screen, new implementation method does not occur in the fingerprint recognition application on LCD display.
Summary of the invention
In view of the above shortcomings of the prior art, the present invention provides fingerprint recognition application sides under a kind of screen of liquid crystal display
Method.
To achieve the above object, the technical solution adopted by the present invention is that: fingerprint recognition is answered under a kind of screen of liquid crystal display
It with method, is punched on the reflector plate under liquid crystal display screen, fingerprint identification module is set under hole, the diameter in the hole is
0.1-0.3mm。
Preferably, the liquid crystal display is layer structure, is followed successively by LCD display, polarization by reflection light from top to bottom
Brightness enhancement film, lenticule shape diffusion barrier, light guide plate and reflector plate.
Preferably, the diameter in the hole is 0.15-0.2mm.
Preferably, the number in the hole is 1-9.
Preferably, it when the number in the hole is 3, is triangularly arranged.
Preferably, when the number in the hole is 5, a hole is center hole, remaining four hole is the four of centre bore
All arbitrary arrangements.
Preferably, when the number in the hole is 5, in intersection cross-shaped arrangement.
The configuration of the present invention is simple is realized and is easy, by test of many times and calculating, diameter, number and the arrangement in hole realize and
It optimizes.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the arrangement schematic diagram in 3 holes.
Fig. 3 is the schematic diagram of 5 holes arrangement.
Fig. 4 is the schematic diagram that 5 holes are in cruciform shape arrangement.
In figure: 1-LCD display screen；2- polarization by reflection light brightness enhancement film；3- lenticule shape diffusion barrier；4- light guide plate；5- reflection
Piece；6- fingerprint identification module；7-LED light source；The hole 8-.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It is as Figure 1-Figure 4: fingerprint recognition application method under a kind of screen of liquid crystal display, under liquid crystal display screen
8 are punched on reflector plate, fingerprint identification module 6 is set under hole 8, and the diameter in the hole 8 is 0.2mm.The liquid crystal display
For layer structure, it is followed successively by LCD display 1, polarization by reflection light brightness enhancement film brightness enhancement film 2 from top to bottom, lenticule shape diffusion barrier 3,
Light guide plate 4 and reflector plate 5.
The polarization by reflection light brightness enhancement film that the present invention uses is " a kind of anti-using Chinese Patent No. 201310285758X
Penetrate brightness enhancement film and its manufacturing method ".A kind of reflective polarizer brightness enhancement film, wherein including 1/4 wavelength phase difference being wholely set
Substrate, antistatic layer, liquid crystal layer and light collecting layer or diffusion layer；The one side of the 1/4 wavelength phase difference substrate inside-out according to
Secondary that the liquid crystal layer and antistatic layer is arranged, the light collecting layer or diffusion is arranged in the another side of the 1/4 wavelength phase difference substrate
Layer.The antistatic layer is atomizing layer or hyaline layer；The atomizing layer includes that multiple surface roughness Ra values are 0.10 to 0.5 tool
There is the convex hemispherical bead structure of atomizing effect.The atomizing layer includes the identical micro lens array of multiple evenly distributed sizes
Convex hemispherical bead structure, or, the convex hemispherical bead structure of multiple sizes of micro lens array；The lenticule column
The diameter of the convex hemispherical bead structure of battle array is 3~50 microns.The reflective polarizer brightness enhancement film, wherein the liquid crystal layer
Raw material is mixed by nematic liquid crystal, chiral agent, polymer monomer, photoinitiator.The raw material composition of its liquid crystal layer is by weight
Measuring percentages includes 40-60% nematic liquid crystal, 35-50% polymer monomer, 3-8% chiral agent and 2-6% photoinitiator.
The reflective polarizer brightness enhancement film, wherein the nematic liquid crystal is twisted nematic liquid crystal, high twist nematic liquid crystal or super
Twisted nematic liquid crystal；The chiral agent is greater than 20 or more chiral agent compound-material using distortion power；The polymer list
Body use refractive index for 1.5 to 1.73 acrylate monomer or acrylate oligomer.The reflective polarizer brightness enhancement film,
Wherein, the liquid crystal layer uses UV curing mode, and forming optically-active screw pitch is Pitch 15-30um and with reflective polarizer effect
Liquid crystal optics film.The light collecting layer or diffusion layer, wherein the light collecting layer is V-cut concentration structure, including multiple uniform rows
The jagged plane of refraction or multiple height of column do not wait the jagged plane of refraction of arrangements, and it is poly- that jagged plane of refraction generates refraction
Light can produce more evenly bright translucent effect, reach the function of focusing light, increase brightness；The refraction of adjacent saw-tooth shape
The spacing in face is 24 to 50 microns, 12 to 25 microns of the height of jagged plane of refraction.The diffusion layer is multiple rough surface
Spending Ra value is 0.10 to the 0.5 convex hemispherical bead structure with atomizing effect；Or it is identical including multiple evenly distributed sizes
Micro lens array convex hemispherical bead structure, or, the convex hemispherical bead knot of multiple sizes of micro lens array
Structure；The diameter of the convex hemispherical bead structure of the micro lens array be 3~50 microns, convex hemispherical bead can produce light around
It penetrates and focusing light effect, thus the function of reaching diffusion and focus light, increase brightness.The reflective polarizer brightness enhancement film, wherein
The antistatic layer, light collecting layer and the used material of diffusion layer be UV polymer, the UV polymer use refractive index for 1.5 to
1.73 acrylate monomer or acrylate oligomer or acrylate monomer or acrylate oligomer blend；It is described anti-
Electrostatic layer, liquid crystal layer and light collecting layer or diffusion layer are all made of UV curing mode and are made.The reflective polarizer brightness enhancement film, wherein
The 1/4 wavelength phase difference substrate with a thickness of 30 to 200um, the liquid crystal layer with a thickness of 10um hereinafter, described antistatic
Layer with a thickness of 3-10um.A kind of manufacturing method of reflective polarizer brightness enhancement film, wherein the reflective polarizer brightness enhancement film includes 1/4
Wavelength phase difference substrate, antistatic layer, liquid crystal layer and light collecting layer or diffusion layer, manufacturing method specifically includes the following steps:
Ratio mixing nematic liquid crystal, chiral agent, polymer monomer and photoinitiator on demand, obtain nematic liquid crystal mixture, will
The nematic liquid crystal mixture is coated in the one side of the 1/4 wavelength phase difference substrate, is formed with UV curing mode described
Liquid crystal layer；Simultaneously UV is formed by curing the antistatic layer for coating on the liquid crystal layer；In the another of the 1/4 wavelength phase difference substrate
Simultaneously UV is formed by curing the light collecting layer for upper coating on one side, is also possible to diffusion layer.
Lenticule shape diffusion barrier of the invention uses Chinese Patent No. 2010105324615, " diffusion barrier and its manufacturer
Method " manufacture.A kind of manufacturing method of diffusion barrier, comprising: choose a roller body appropriate；Institute is made using microscopic carvings cutting technique
Need the micron jig of specification；Using under micron jig CNC technical operation made from microscopic carvings cutting technique to the wheel face of roller body
Microscopic carvings processing is carried out, the wheel face of the recessed dome-type partial size with optical microstructures is made；Roller body is filled on UV coating machine；?
The diffusion layer with the bead of convex dome-type partial size is formed on the surface of transparent film layer；It is formed on another surface of transparent film layer
The antistatic layer of bead with convex dome-type partial size.The manufacturing method of the diffusion barrier, wherein described in transparent film layer
It includes: that one layer of liquid is uniformly coated on the surface of transparent film layer that being formed on surface, which has the diffusion layer of the bead of convex dome-type partial size,
The optical-grade acrylic ester of state high refractive index；It replicates the recessed dome-type partial size shape of wheel face and forms the pearl of convex dome-type partial size
Body；Carry out UV curing.The manufacturing method of the diffusion barrier, wherein described to be formed on another surface of transparent film layer
The antistatic layer of bead with convex dome-type partial size includes: that one layer is uniformly coated on another surface of transparent film layer with anti-
The optical resin of the liquid high refractive index of electrostatic agent；It replicates the recessed dome-type partial size shape of wheel face and forms convex dome-type partial size
Bead；Carry out UV curing.The manufacturing method of the diffusion barrier, wherein carried out at microscopic carvings in the wheel face to roller body
Before reason, further includes: make a rough lapping and secondary smooth grinding to roller body using CNC technology.The system of the diffusion barrier
Make method, wherein when forming the diffusion layer with the bead of convex dome-type partial size, the diameter of wheel face fovea superior dome-type partial size is
3 to 15 microns, surface roughness Ra value is 0.24 to 0.8 micron.The manufacturing method of the diffusion barrier, wherein have being formed
When having the antistatic layer of the bead of convex dome-type partial size, the diameter of wheel face fovea superior dome-type partial size is 3 to 15 microns, rough surface
Degree Ra value is 0.24 to 0.8 micron or surface is 150 to 400 mesh points.A kind of manufacturer's legal system using above-mentioned diffusion barrier
The diffusion barrier made, including transparent film layer, diffusion layer, antistatic layer, the diffusion layer and antistatic layer and transparent film layer are one
It is arranged, and diffusion layer and antistatic layer are oppositely arranged.The diffusion barrier, wherein the diffusion layer includes multiple
The bead of continuously arranged convex dome-type partial size.The diffusion barrier, wherein the antistatic layer includes multiple dilute scattered arrangements
The bead of convex dome-type partial size.The diffusion barrier, wherein the diffusion layer surface roughness Ra value is 0.24 to 0.8 micron
Or surface is 150 to 300 mesh points.
When Kong Weiyi, the light source luminescent angle on fingerprint identification module is larger, and imaging direct imaging is shown in LCD
On screen, this discrimination is relatively low.When hole is 2 or more, multiple holes are uniformly distributed according to the area of finger print as far as possible, refer to
Line identification module needs the image by multiple holes to be combined into a figure to be presented on LCD display, and Kong Yue is more, fingerprint recognition mould
Light source luminescent angle on block is about small, and identification is more accurate, and single calculating is got up also more complicated.The present invention is by calculating and repeatedly trying
It tests, it is determined that the diameter in hole is 0.1-0.3mm, when the number in hole is 3 or 5, while guaranteeing fingerprint recognition rate,
What is calculated is fastest.
It is as shown in Figure 2: when hole is 3, at rounded projections arranged, the edge of finger print, Er Qieshi can be covered substantially
It is not fastest.
As shown in Figure 3 and Figure 4, when hole is 5, a hole is center hole, remaining four hole is appointed in the surrounding of centre bore
Meaning arrangement, at this time in the case where guaranteeing recognition speed, can be completely covered the area of fingerprint, discrimination is very high substantially.
Claims (7)
1. fingerprint recognition application method under a kind of screen of liquid crystal display, it is characterised in that: the backlight under the screen of liquid crystal display
It is punched on the reflector plate of mould group, fingerprint identification module is set under hole, the diameter in the hole is 0.1-0.3mm.
2. fingerprint recognition application method under a kind of screen of liquid crystal display as described in claim 1, it is characterised in that: described
Liquid crystal display is layer structure, is followed successively by LCD display, polarization by reflection light brightness enhancement film from top to bottom, lenticule shape diffusion barrier,
Light guide plate and reflector plate.
3. fingerprint recognition application method under a kind of screen of liquid crystal display as described in claim 1, it is characterised in that: the hole
Diameter be 0.15-0.2mm.
4. fingerprint recognition application method under a kind of screen of liquid crystal display as described in claim 1, it is characterised in that: the hole
Number be 1-9 arbitrary arrangement shape.
5. fingerprint recognition application method under a kind of screen of liquid crystal display as described in claim 1 or 4, it is characterised in that: institute
When the number for stating hole is 3, it is triangularly arranged.
6. fingerprint recognition application method under a kind of screen of liquid crystal display as described in claim 1 or 4, it is characterised in that: institute
When the number for stating hole is 5, a hole is center hole, surrounding arbitrary arrangement of remaining four hole in centre bore.
7. fingerprint recognition application method under a kind of screen of liquid crystal display as described in claim 1 or 4, it is characterised in that: institute
When the number for stating hole is 5, in intersection cross-shaped arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910211446.1A CN109765712A (en) | 2019-03-20 | 2019-03-20 | Fingerprint recognition application method under a kind of screen of liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910211446.1A CN109765712A (en) | 2019-03-20 | 2019-03-20 | Fingerprint recognition application method under a kind of screen of liquid crystal display |
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| CN109765712A true CN109765712A (en) | 2019-05-17 |
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| CN201910211446.1A Pending CN109765712A (en) | 2019-03-20 | 2019-03-20 | Fingerprint recognition application method under a kind of screen of liquid crystal display |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110727144A (en) * | 2019-07-17 | 2020-01-24 | 深圳市隆利科技股份有限公司 | Fingerprint identification module and electronic equipment |
| CN111405090A (en) * | 2020-03-18 | 2020-07-10 | Oppo广东移动通信有限公司 | Camera calling method of mobile equipment and mobile equipment |
| CN113569601A (en) * | 2020-04-28 | 2021-10-29 | 华为技术有限公司 | Under-screen fingerprint identification system and electronic equipment |
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| CN103942537A (en) * | 2014-04-04 | 2014-07-23 | 王曙光 | Liquid crystal terminal device, fingerprint image collection method and fingerprint collector |
| CN204028936U (en) * | 2014-05-16 | 2014-12-17 | 深圳印象认知技术有限公司 | Ultrathin fingerprint acquisition device, the display device of fingerprint can be gathered |
| US20190004354A1 (en) * | 2017-07-03 | 2019-01-03 | Focaltech Electronics, Ltd | High screen ratio display device with fingerprint identification |
| CN109270988A (en) * | 2018-08-31 | 2019-01-25 | Oppo广东移动通信有限公司 | Display screen component and electronic equipment |
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2019
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Patent Citations (5)
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| CN103942537A (en) * | 2014-04-04 | 2014-07-23 | 王曙光 | Liquid crystal terminal device, fingerprint image collection method and fingerprint collector |
| CN104063704A (en) * | 2014-04-04 | 2014-09-24 | 深圳印象认知技术有限公司 | Image collection device, liquid crystal terminal device and fingerprint and image collection method |
| CN204028936U (en) * | 2014-05-16 | 2014-12-17 | 深圳印象认知技术有限公司 | Ultrathin fingerprint acquisition device, the display device of fingerprint can be gathered |
| US20190004354A1 (en) * | 2017-07-03 | 2019-01-03 | Focaltech Electronics, Ltd | High screen ratio display device with fingerprint identification |
| CN109270988A (en) * | 2018-08-31 | 2019-01-25 | Oppo广东移动通信有限公司 | Display screen component and electronic equipment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110727144A (en) * | 2019-07-17 | 2020-01-24 | 深圳市隆利科技股份有限公司 | Fingerprint identification module and electronic equipment |
| CN111405090A (en) * | 2020-03-18 | 2020-07-10 | Oppo广东移动通信有限公司 | Camera calling method of mobile equipment and mobile equipment |
| CN113569601A (en) * | 2020-04-28 | 2021-10-29 | 华为技术有限公司 | Under-screen fingerprint identification system and electronic equipment |
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Application publication date: 20190517 |