CN208400148U - A kind of guide-lighting light modulation integral type fingerprint recognition mould group being hidden in below screen - Google Patents
A kind of guide-lighting light modulation integral type fingerprint recognition mould group being hidden in below screen Download PDFInfo
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- CN208400148U CN208400148U CN201820801542.2U CN201820801542U CN208400148U CN 208400148 U CN208400148 U CN 208400148U CN 201820801542 U CN201820801542 U CN 201820801542U CN 208400148 U CN208400148 U CN 208400148U
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Abstract
The utility model discloses a kind of guide-lighting light modulation integral type fingerprint recognition mould groups being hidden in below screen, including screen component, the imaging system being installed in below screen component, the screen component includes glass cover-plate, the LCD liquid crystal display screen being set to below glass cover-plate, the light guide plate for being used to illuminate LCD liquid crystal display screen being set to below LCD liquid crystal display screen, the light guide plate includes light conducting member, the light conducting member includes positive Fresnel Lenses and negative Fresnel Lenses, the imaging system includes the imaging len for imaging, the infrared filter being installed in below imaging len, the imaging sensor for being used to receive image being installed in below infrared filter.The utility model structure is simple, and at low cost, service life is high and good reliability, can eliminate stain caused by local luminance is insufficient on the display screen formed as light guide plate aperture simultaneously, can be used for common LCD touch display screen.
Description
Technical field
The utility model relates to a kind of fingerprint recognition mould groups, more specifically, are related to a kind of be hidden in below screen
Leaded light light modulation integral type fingerprint recognition mould group.
Background technique
The fingerprint recognition mould group for mobile phone of existing prevalence on the market, is largely capacitive fingerprint sensing device component,
It forms electric field using silicon crystal unit microarray and conductive subcutaneous electrolyte, and the height fluctuating of fingerprint will lead to pressure between the two
The existing different variation in poor mountain can realize accurate fingerprint measurement whereby.But since sensor surface is easy using silicon materials
Damage, causes service life to reduce.And the bumps between the gully and ridge for passing through fingerprint form fingerprint image, thus
Difficulty, finger discrimination rate are lower to be identified to dirty finger or wet finger etc..
In addition application No. is a kind of touchings using miniature LED sensing technology of the U.S. Patent Application Publication of US9570002
LCD liquid crystal display screen fingerprint identification technology is touched, is illustrated in fig. 1 shown below, this technology is equipped with small on miniature light-emitting diode display
RF transmitter and sensor array, to replace the capacitive fingerprint sensing device component of present mainstream.The design can make to touch
It touches panel and fingerprint sensor is integrated in one.Its advantage are as follows: it is very beautiful and practical, is hidden under LCD liquid crystal display screen
Side, it is very concealed to be not easy to be discovered, with LCD liquid crystal display screen one integrated mass, it is mainly used for the boundless of next-generation smart phone
The design of frame screen, the HOME key of " disappearance " and Touch ID fingerprint sensor.But the technology is only used for the LCD liquid crystal of OLED
On display screen, main cause are as follows: OLED (organic light emission LED) is that full impregnated is self luminous, and LCD liquid crystal display screen does not need to carry on the back
Optical illumination, therefore the region of fingerprint recognition imaging is without backlight aperture.If using common LCDLCD liquid crystal display, that
Since the light guide plate (some micro-structures of its bottom surface) of the backlight module of illumination LCD liquid crystal display screen can be to the fingerprint of lower section
It is light-blocking to identify that mould group generates, therefore light guide plate needs out a hole in the position of the surface of fingerprint recognition optical imagery mould group,
It allows the light of fingerprint lower epidermis that can pass through backlight module and imaging identification is carried out by the imaging len of lower section.So due to
Light guide plate position of opening cannot illuminate the LCD screen of surface, will appear in LCD liquid crystal display screen one it is apparent black
Point.
Above-mentioned utility model uses the touch LCD liquid crystal display screen technology of miniature LED sensing technology, and the OLED screen is maximum
The technical issues of be organic material restricted lifetime.OLED material due to generating blue light obtains more than the material degradation of other colors
Fastly, therefore the defeated mountain of blue light can be fewer than the light of other colors.In addition therefore water, can be changed with the organic material of transient breakdown display
Into sealing technology be of great significance to actual production.OLED screen (such as document when display has the image of white background
Or website), it can very power consumption.A further disadvantage is that burn-in problem: the difference shown on the screen due to each pixel, each
The aging speed of position just has difference.The production difficulty of this panel is very high, and expensive.
Utility model content
To overcome drawbacks described above in the prior art, the utility model provides one kind and is hidden in screen so that mobile phone is applied as an example
The leaded light of curtain lower section withers light integral type fingerprint recognition mould group, and at low cost, service life is high and good reliability, can disappear simultaneously
Except the stain on the display screen as caused by light guide plate aperture, it can be used for common LCD touch display screen.
To achieve the above object, the utility model provides a kind of leaded light being hidden in below screen and withers the knowledge of light integral type fingerprint
Other mould group, including screen component, the imaging system being installed in below screen component, the screen component includes glass cover-plate, if
The LCD liquid crystal display screen being placed in below glass cover-plate is set to below LCD liquid crystal display screen and is used to illuminate LCD liquid crystal display
The light guide plate of screen, the light guide plate include light conducting member, and the light conducting member includes positive Fresnel Lenses and negative Fresnel Lenses,
The positive Fresnel Lenses is consistent with the equivalent radius of curvature of negative Fresnel Lenses, and the positive Fresnel Lenses and negative Fresnel are saturating
The equivalent optical strength of mirror is zero, and the imaging system includes the imaging len for imaging, is installed in red below imaging len
Outer filter plate, be installed in below infrared filter for receiving the imaging sensor of image, be installed in imaging len and infrared
For protecting imaging len and the shell with infrared filter on the outside of filter plate, the cover top portion offers horn mouth.
Preferably, the imaging len is optical imaging lens, the optical imaging lens are that Fresnel curved surface is saturating
Mirror may be aspherics lens or diffraction optics toroidal lens.
For two or more also can be set preferably, the quantity of the imaging len is one.
Compared with prior art, the utility model has the beneficial effects that:
The utility model includes screen component, the imaging system being installed in below screen component, and the screen component includes
Glass cover-plate, the LCD liquid crystal display screen being set to below glass cover-plate are set to below LCD liquid crystal display screen and are used to illuminate
The light guide plate of LCD liquid crystal display screen, the light guide plate include light conducting member, and the light conducting member includes positive Fresnel Lenses and bears
Fresnel Lenses, the imaging system include the imaging len for imaging, the infrared filter being installed in below imaging len,
The imaging sensor for being used to receive image being installed in below infrared filter, is installed on the outside of imaging len and infrared filter
For protect imaging len and with the shell of infrared filter, the cover top portion offers horn mouth.The utility model structure
Simply, at low cost, service life is high and good reliability, can eliminate the LCD liquid crystal display as caused by light guide plate aperture simultaneously
Stain on screen can be used for common LCD touch display screen.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is this
Some embodiments of utility model, for those of ordinary skill in the art, under the premise of not paying mountain creative work, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is a kind of touching using miniature LED sensing technology of the U.S. Patent Application Publication application No. is US9570002
Touch the structural schematic diagram of LCD liquid crystal display screen fingerprint identification technology；
Fig. 2 is that a kind of leaded light being hidden in below screen provided by the embodiment of the utility model withers light integral type fingerprint recognition
The structural schematic diagram of mould group and the cooperation of screen component.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, those of ordinary skill in the art every other embodiment obtained, Bu Shuyu under the premise of not making mountain creative work
The range of the utility model protection.
The embodiments of the present invention provide a kind of leaded light being hidden in below screen and wither light integral type fingerprint recognition mould group.
It withers light integral type fingerprint recognition mould referring to FIG. 2, the utility model provides a kind of leaded light being hidden in below screen
Group, including screen component, the imaging system being installed in below screen component, the screen component include glass cover-plate 2010, if
It is placed in the LCD liquid crystal display screen 2020 of 2010 lower section of glass cover-plate, is set to below LCD liquid crystal display screen 2020 and is used to illuminate
The light guide plate 2030 of LCD liquid crystal display screen 2020, the light guide plate 2030 include light conducting member, and the light conducting member includes positive luxuriant and rich with fragrance
Nie Er lens 2031 and negative Fresnel Lenses 2032, the equivalent song of the positive Fresnel Lenses 2031 and negative Fresnel Lenses 2032
Rate radius is consistent, and the equivalent optical strength of the positive Fresnel Lenses 2031 and negative Fresnel Lenses 2032 is zero, to lower section at
As the imaging of system does not influence, the light of incident imaging system passes through the positive Fresnel Lenses 2031 of about 2030 light guide plate and negative
Do not change direction after Fresnel Lenses 2032.The diameter of the positive Fresnel Lenses 2031 and negative Fresnel Lenses 2032 is super
The optical aperture of the imaging ray of imaging system in the position is crossed, the imaging system includes the imaging len for imaging
2060, it is installed in the infrared filter 2070 of 2060 lower section of imaging len, is installed in below infrared filter 2070 and is used to connect
The imaging sensor 2080 for receiving image is installed on the outside of imaging len 2060 and infrared filter 2070 for protecting imaging len
2060 and the shell 2050 with infrared filter 2070, horn mouth is offered at the top of the shell 2050.
The horn mouth is the aperture diaphragm of imaging len 2060, and aperture diaphragm allows the imaging ray of fingerprint lower epidermis to wear
It crosses in the imaging sensor 2080 that imaging len 2060 is imaged onto below, and blocks the light except field angle and enter imaging
In lens 2060.
The zigzag micro-structure of the positive Fresnel Lenses 2031 and negative Fresnel Lenses 2032 is used as light guide plate simultaneously
2030 additional illumination in the position, the light AB of lateral transport in the light guide plate 2030 of cell phone back optical mode group, by light guide plate
After inner full-reflection, light BC encounters in the zigzag micro-structure of Fresnel Lenses 2031, due to the inclined-plane of zigzag micro-structure
Steeper, reflection light CD, which is no longer along, to be continued to transmit inside light guide plate, but is reflected into 2030 outside of light guide plate, directive
On the upper surface 2011 of glass cover-plate 2010, the position of fingerprint lower epidermis is illuminated, subsequent light enters in imaging len 2060, institute
It states imaging len 2060 and the gully texture structure of fingerprint epidermis is imaged onto the imaging sensor positioned at 2060 lower section of imaging len
On 2080, one is formed clearly as to carry out image procossing.
In the present embodiment, the imaging len 2060 is optical imaging lens, and the optical imaging lens are preferably luxuriant and rich with fragrance alunite
Your toroidal lens, may be aspherics lens, diffraction optics toroidal lens, preferred a piece of Fresnel in the present embodiment
Toroidal lens, certainly, quantity may be two panels or more.
In conclusion the utility model structure is simple, at low cost, service life is high and good reliability, can disappear simultaneously
Except the stain that local luminance deficiency is formed on the display screen as caused by light guide plate aperture, it is aobvious to can be used for common LCD touch
Display screen.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiments of the present invention is not by above-mentioned
The limitation of embodiment, it is made under other any spiritual essence and principles without departing from the utility model to change, modify, replacing
In generation, simplifies combination, should be equivalent substitute mode, is included within the protection scope of the utility model.
Claims (4)
1. a kind of guide-lighting light modulation integral type fingerprint recognition mould group being hidden in below screen, including screen component, are installed in screen
Imaging system below component, the screen component includes glass cover-plate, the LCD liquid crystal display being set to below glass cover-plate
Screen, the light guide plate for being used to illuminate LCD liquid crystal display screen being set to below LCD liquid crystal display screen, it is characterised in that: the leaded light
Plate includes light conducting member, and the light conducting member includes positive Fresnel Lenses and negative Fresnel Lenses, the positive Fresnel Lenses and
The equivalent radius of curvature of negative Fresnel Lenses is consistent, and the equivalent optical strength of the positive Fresnel Lenses and negative Fresnel Lenses is
Zero.
2. a kind of guide-lighting light modulation integral type fingerprint recognition mould group being hidden in below screen according to claim 1, special
Sign is: the imaging system includes the imaging len for imaging, the infrared filter being installed in below imaging len, installing
The imaging sensor for being used to receive image below infrared filter is installed on the outside of imaging len and infrared filter and is used for
The shell of imaging len and infrared filter is protected, the cover top portion offers horn mouth.
3. a kind of guide-lighting light modulation integral type fingerprint recognition mould group being hidden in below screen according to claim 2, special
Sign is: the imaging len is optical imaging lens, and the optical imaging lens are Fresnel toroidal lens, aspherics
Lens or diffraction optics toroidal lens.
4. a kind of guide-lighting light modulation integral type fingerprint recognition mould group being hidden in below screen according to claim 3, special
Sign is: the quantity of the imaging len is one, two or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820801542.2U CN208400148U (en) | 2018-05-25 | 2018-05-25 | A kind of guide-lighting light modulation integral type fingerprint recognition mould group being hidden in below screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820801542.2U CN208400148U (en) | 2018-05-25 | 2018-05-25 | A kind of guide-lighting light modulation integral type fingerprint recognition mould group being hidden in below screen |
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| CN208400148U true CN208400148U (en) | 2019-01-18 |
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| CN201820801542.2U Active CN208400148U (en) | 2018-05-25 | 2018-05-25 | A kind of guide-lighting light modulation integral type fingerprint recognition mould group being hidden in below screen |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110084090A (en) * | 2019-01-22 | 2019-08-02 | 东莞市美光达光学科技有限公司 | Fingerprint recognition mould group under a kind of optical profile type screen |
| CN111208651A (en) * | 2019-07-22 | 2020-05-29 | 神亚科技股份有限公司 | Imaging system |
| CN113569642A (en) * | 2021-06-28 | 2021-10-29 | 深圳阜时科技有限公司 | Optical sensing device and electronic equipment |
-
2018
- 2018-05-25 CN CN201820801542.2U patent/CN208400148U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110084090A (en) * | 2019-01-22 | 2019-08-02 | 东莞市美光达光学科技有限公司 | Fingerprint recognition mould group under a kind of optical profile type screen |
| CN110084090B (en) * | 2019-01-22 | 2024-04-30 | 东莞市美光达光学科技有限公司 | Optical under-screen fingerprint identification module |
| CN111208651A (en) * | 2019-07-22 | 2020-05-29 | 神亚科技股份有限公司 | Imaging system |
| WO2021012683A1 (en) * | 2019-07-22 | 2021-01-28 | 神亚科技股份有限公司 | Imaging system |
| TWI742555B (en) * | 2019-07-22 | 2021-10-11 | 神亞科技股份有限公司 | Imaging system |
| CN113569642A (en) * | 2021-06-28 | 2021-10-29 | 深圳阜时科技有限公司 | Optical sensing device and electronic equipment |
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