CN108957856A - With fingerprint recognition liquid crystal display body - Google Patents
With fingerprint recognition liquid crystal display body Download PDFInfo
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- CN108957856A CN108957856A CN201810859177.5A CN201810859177A CN108957856A CN 108957856 A CN108957856 A CN 108957856A CN 201810859177 A CN201810859177 A CN 201810859177A CN 108957856 A CN108957856 A CN 108957856A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 136
- 239000000463 material Substances 0.000 claims description 42
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- 230000003287 optical effect Effects 0.000 abstract description 22
- 238000000034 method Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 description 22
- 238000005538 encapsulation Methods 0.000 description 14
- 238000009413 insulation Methods 0.000 description 13
- 239000010408 film Substances 0.000 description 11
- 238000004806 packaging method and process Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 239000011368 organic material Substances 0.000 description 7
- 239000010409 thin film Substances 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000003292 glue Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 230000013011 mating Effects 0.000 description 4
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- 238000001914 filtration Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229920001621 AMOLED Polymers 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
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- 238000004528 spin coating Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The present invention has the liquid crystal display device of fingerprint identification function, including liquid crystal display body and backlight assembly, the backlight assembly include fingerprint recognition backlight module, and the side of the light direction of the fingerprint recognition backlight module is arranged in the liquid crystal display body.Because of its frivolous characteristic, liquid crystal display body can be relatively easy to optical finger print scheme under integrated shield.By means of the self luminous feature of OLED, in conjunction with liquid crystal display, LED before making OLED screen body replace or partially replace adds light guide plate backlight module, overcome the shortcomings that can not carrying out optical finger print identification because of guide-lighting plate problem, and pass through the refinement of OLED luminescent screen body, complete optical finger print identification process.
Description
Technical field
The present invention relates to fingerprint recognition liquid crystal display device technical fields, and in particular to a kind of to be made using OLED luminescent screen body
For the liquid crystal display body of backlight assembly.
Background technique
The existing product with liquid crystal display body and fingerprint recognition, liquid crystal display body need to be to be shown for showing
Content, Fingerprint Identification Unit carry out fingerprint recognition.This product space layout is unreasonable.As CN207397285U discloses a kind of finger
Line sensor IC card reader, including reader ontology, the reader ontology downside is equipped with reserve battery and conducting wire, described
The conducting wire other end is equipped with attaching plug, and power interface is provided on the reserve battery, and described this body front surface of reader is embedding
Equipped with camera, liquid crystal display, control panel, induction zone, placing groove, Fingerprint Identification Unit and shield, the fingerprint recognition
Device is located inside shield, and reader ontology two sides are provided with fixinig plate, and the fixinig plate and reader ontology are integrated
Structure.The liquid crystal display body and Fingerprint Identification Unit wherein used is two independent components, is placed on not by by finger
Fingerprint recognition is carried out on liquid crystal display.
Liquid crystal display body is used as presently the most common display technology, since liquid crystal display body thickness is thicker, and because
For the presence of light guide plate, because of scattering problems, fingerprint recognition light lossless can not be directed through, so conventional optical fingerprint identifies
Scheme is difficult to complete fingerprint recognition.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that overcome in the prior art liquid crystal display body due to its thickness limit
The problem that system causes integrated form fingerprint recognition fuzzy, thus provide it is a kind of using OLED fingerprint identification module as liquid crystal display
Shield the liquid crystal display device of the fingerprint identification function of body backlight.
For achieving the above object, the present invention adopts the following technical scheme:
A kind of liquid crystal display device with fingerprint identification function, including liquid crystal display body and backlight assembly, the back
Optical assembly includes fingerprint recognition backlight module, and the light side out of the fingerprint recognition backlight module is arranged in the liquid crystal display body
To side.
The fingerprint recognition backlight module includes OLED luminescent screen body and fingerprint Identification sensor, and the fingerprint recognition passes
Side of the OLED luminescent screen body far from the liquid crystal display body is arranged in sensor.
The liquid crystal display device is divided into fingerprint identification region and non-fingerprint identification region；
The corresponding backlight assembly of the fingerprint identification region includes fingerprint recognition backlight module；
The corresponding backlight assembly of non-fingerprint identification region includes LED backlight mould group and light guide plate, the leaded light
Plate is arranged between the LED backlight mould group and liquid crystal display body.
Fingerprint recognition backlight module includes OLED luminescent screen body and fingerprint Identification sensor, the fingerprint Identification sensor
Side of the OLED luminescent screen body far from the liquid crystal display body is set.
The liquid crystal display body includes the first polaroid being superposed, TFT driving unit, liquid crystal and colorized optical filtering
Piece, first polaroid are arranged on the backlight assembly；
The colored filter is provided with several pixel units, and each pixel unit includes red sub-pixel, green
Pixel and blue subpixels.
The pixel unit further includes clear subpixel.
Blue light sub-pixel, green light sub-pixel and the feux rouges sub-pixel and clear subpixel of each pixel unit are arranged side by side.
The liquid crystal display body includes the first polaroid being superposed, TFT driving unit, liquid crystal and colorized optical filtering
Piece, first polaroid are arranged on the backlight assembly；
The region that the colored filter corresponds to fingerprint identification region is provided with several pixel units, each pixel unit packet
Include red sub-pixel, green sub-pixels, blue subpixels and clear subpixel；
The region that the colored filter corresponds to non-fingerprint identification region is provided with several pixel units, each pixel unit
Including red sub-pixel, green sub-pixels, blue subpixels.
Red sub-pixel, green sub-pixels, blue subpixels and the clear subpixel of each pixel unit are set side by side
It sets；
Red sub-pixel, green sub-pixels and the blue subpixels of each pixel unit are set side by side.
OLED luminescent screen body includes the transparent substrate being superposed, transparent anode layer, organic light-emitting units and transparent cathode
Layer, the OLED screen body are provided with several light emitting regions and non-luminous region；
The screen body outside of the side of the OLED screen body far from its light direction is internally provided with opaque material layer, institute
Opaque material layer is stated equipped with several micropores, the micropore is correspondingly arranged with the non-luminous region.
Compared with prior art, technical solution of the present invention has the following beneficial effects:
1, the present invention has the liquid crystal display device of fingerprint identification function, using fingerprint recognition backlight module as LCD screen
Body backlight can not only realize backlight effect but also can realize that fingerprint recognition acts on.Since (full name in English is organic electroluminescence device
Organic Light Emitting Device, referred to as OLED) have and responds fast, pollution-free, high contrast, planarization, light
The advantages that thin, widely applies in illumination and display field at present.Because its frivolous characteristic AMOLED display screen body can be more
It is readily integrated to shield lower optical finger print scheme.OLED screen body is taken in conjunction with liquid crystal display by means of the self luminous feature of OLED
LED before generation or part replace adds light guide plate backlight module, and optical finger print can not be carried out because of guide-lighting plate problem by overcoming
The shortcomings that identification, and pass through the refinement of OLED luminescent screen body, complete optical finger print identification process.
2, the liquid crystal display device provided by the invention with fingerprint identification function uses fingerprint recognition backlight module, light
Source is OLED luminescent screen body, including transparent substrate, transparent anode layer, organic light-emitting units and the transparent cathode being superposed,
The OLED screen body is provided with several light emitting regions and non-luminous region, and the OLED screen body is set far from the side of its light direction
It is equipped with opaque material layer, the opaque material layer is equipped with several micropores, the micropore and the non-luminous region pair
It should be arranged.The present invention has the opaque material layer of microcellular structure due to being provided with, wherein opaque region and light emitting region pair
It should be arranged, the light that can effectively stop light emitting region to issue in this way is captured by optical sensor, and micro-porous area and non-hair
Light region is correspondingly arranged, and the light that luminous zone issues passes through liquid crystal display body after light direction encounters finger after being reflected
Clear subpixel area and OLED screen body after, captured after micropore by optical sensor, therefore can effectively shield luminous zone
Interference of the light to fingerprint reflection light, obtain fingerprint graph high-definition.
3, OLED luminescent screen body of the present invention, the cross-sectional area for being used to form the transparent insulation protrusion of non-luminous region are slightly larger than
Or the cross-sectional area equal to the micropore, the light that can effectively prevent luminous zone in this way pass through various reflection diffusing reflections etc.
Mode is captured by optical sensor, therefore can effectively shield interference of the light of luminous zone to fingerprint reflection light, is obtained high
The fingerprint graph of clarity.
4, to guarantee to be captured by optical sensor to greatest extent after the light of fingerprint reflection reflects, the present invention is arranged micro-
The diameter in hole is 10um-500um, and the spacing between the adjacent micropore is 10um-10mm.It is verified, using this design
Opaque material layer fingerprint reflection light can be captured by optical sensor to greatest extent, form the fingerprint image of high quality
Shape.
5, compared with conventional fingerprint identification, structure of the invention is simple, it is low in energy consumption, be easily assembled, be at low cost.
Detailed description of the invention
In order to illustrate more clearly of the present invention specifically there is the liquid crystal display device of fingerprint identification function to apply mode or existing in fact
There is the technical solution in technology, specific embodiment or attached drawing needed to be used in the description of the prior art will be made below simple
Ground introduction, it should be apparent that, the accompanying drawings in the following description is some embodiments of the present invention, for ordinary skill people
For member, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is first structure diagram of the invention；
Fig. 3 is second embodiment of the present invention；
Fig. 4 is third embodiment of the present invention；
Fig. 5 is the 4th embodiment of the invention；
Fig. 6 is OLED luminescent screen body first embodiment structural schematic diagram；
Fig. 7 is the structural schematic diagram of the opaque material layer in OLED luminescent screen body；
Fig. 8 is OLED luminescent screen body second embodiment structural schematic diagram；
Fig. 9 is OLED luminescent screen body third embodiment structure schematic diagram；
Figure 10 is the 4th embodiment structure schematic diagram of OLED luminescent screen body；
Figure 11 is the 5th embodiment structure schematic diagram of OLED luminescent screen body；
Figure 12 is pixel arrangement mode.
Description of symbols: 01-OLED luminescent screen body, 03-LED backlight module, 04- light guide plate；The first polaroid of 05-,
06-TFT driving unit, 07- liquid crystal, 08- colored filter, the second polaroid of 09-；
1- transparent substrate, 2- transparent anode layer, 3- organic material layer, 4- transparent cathode, 5- encapsulation cover plate, 6- are transparent absolutely
Edge protrusion, 71- the first opaque material layer, 72- the second opaque material layer, 73- third opaque material layer, the opaque region 9-
Domain, 10- micropore, 12- optical sensor, 15- sealing medium.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
The present invention can be embodied in many different forms, and should not be construed as limited to embodiment set forth herein.
On the contrary, providing these embodiments, so that the disclosure will be thorough and complete, and design of the invention will be fully conveyed to
Those skilled in the art, the present invention will only be defined by the appended claims.In the accompanying drawings, for clarity, the area Ceng He can be exaggerated
The size and relative size in domain.It should be understood that when element such as layer, region or substrate are referred to as " being formed in " or " setting
" another element "upper" when, which can be arranged directly on another element, or there may also be intermediary elements.
On the contrary, intermediary element is not present when element is referred to as on " being formed directly into " or " being set up directly on " another element.
As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments
It can be combined with each other at conflict.
A kind of liquid crystal display device with fingerprint identification function as described in Fig. 1-to Fig. 5, including liquid crystal display body and
Backlight assembly, the backlight assembly include fingerprint recognition backlight module, and the liquid crystal display body is arranged in the fingerprint recognition
The side of the light direction of backlight module.
The fingerprint recognition backlight module includes OLED luminescent screen body 01 and fingerprint Identification sensor 12, and the fingerprint is known
The side of the OLED luminescent screen body 01 far from the liquid crystal display body is arranged in individual sensor 12.
When finger presses on liquid crystal display body, the light that the OLED luminescent screen body 01 issues passes through liquid crystal display
Body reaches finger, and the reflected light for reaching finger is sensed by liquid crystal display body, the imaging of OLED luminescent screen body 01 to fingerprint recognition
Device 12, to form fingerprint recognition signal.Specifically, when adjusting liquid crystal display device is non-application voltage, make liquid crystal molecule
In rotation status, the light that OLED luminescent screen body 01 is emitted successively passes through the first polaroid, thin film transistor (TFT), liquid crystal, coloured silk
Colo(u)r filter, the second polarizing film reach finger, since liquid crystal molecule is in rotation status, thus the light by the first polaroid
Line is rotated, it is made to pass through the second polaroid, reaches finger.The reflected light for reaching finger successively passes through the second polarization
Piece, colored filter, liquid crystal, thin film transistor (TFT), the first polaroid, OLED fingerprint recognition backlight module are imaged to fingerprint recognition and pass
Sensor.
As another embodiment, the liquid crystal display device is divided into fingerprint identification region and non-fingerprint identification area
Domain；
The corresponding backlight assembly of the fingerprint identification region includes fingerprint recognition backlight module；Fingerprint recognition backlight module packet
OLED luminescent screen body 01 and fingerprint Identification sensor 12 are included, the fingerprint Identification sensor 12 is arranged in the OLED luminescent screen
Side of the body 01 far from the liquid crystal display body.
The corresponding backlight assembly of non-fingerprint identification region includes LED backlight mould group 03 and light guide plate 04, described
Light guide plate 04 is arranged between the LED backlight mould group 03 and liquid crystal display body.
The liquid crystal display body includes the first polaroid being superposed, TFT driving unit, liquid crystal and colorized optical filtering
Piece, first polaroid are arranged on the backlight assembly；
The colored filter is provided with several pixel units, and each pixel unit includes red sub-pixel, green
Pixel and blue subpixels.
Selectively, the red sub-pixel, green sub-pixels and blue subpixels and including clear subpixel.
Blue light sub-pixel, green light sub-pixel and the feux rouges sub-pixel and clear subpixel of each pixel unit are arranged side by side,
Or any existing way setting.
When the liquid crystal display device is divided into fingerprint identification region and non-fingerprint identification region, the liquid crystal
Display screen body includes the first polaroid being superposed, TFT driving unit, liquid crystal and colored filter, first polaroid
It is arranged on the backlight assembly；
The region that the colored filter corresponds to fingerprint identification region is provided with several pixel units, each pixel unit packet
Include red sub-pixel, green sub-pixels, blue subpixels and clear subpixel；
The region that the colored filter corresponds to non-fingerprint identification region is provided with several pixel units, each pixel unit
Including red sub-pixel, green sub-pixels, blue subpixels.
Red sub-pixel, green sub-pixels, blue subpixels and the clear subpixel of each pixel unit are set side by side
It sets；Red sub-pixel, green sub-pixels and the blue subpixels of each pixel unit are set side by side.
When finger presses the fingerprint identification region of liquid crystal display body, the light that the OLED luminescent screen body 01 issues is passed through
It crosses liquid crystal display body and reaches finger, the reflected light for reaching finger is imaged extremely by liquid crystal display body, OLED luminescent screen body 01
Fingerprint Identification sensor 12, to form fingerprint recognition signal.Specifically, when adjustment liquid crystal display device is non-application voltage
When, so that liquid crystal molecule is in rotation status, it is brilliant that the light that OLED luminescent screen body 01 is emitted successively passes through the first polaroid, film
Body pipe, liquid crystal, colored filter, the second polarizing film reach finger, since liquid crystal molecule be in rotation status, thus passing through the
The light of one polaroid is rotated, it is made to pass through the second polaroid, reaches finger.The reflected light for reaching finger successively passes through
Cross the second polarizing film, colored filter, liquid crystal, thin film transistor (TFT), the first polaroid, OLED fingerprint recognition backlight module be imaged to
Fingerprint Identification sensor.
According to the difference of fingerprint identification region and colored filter, following examples are arranged in the present invention
Embodiment 1
As shown in Fig. 2, the liquid crystal display device with fingerprint identification function of the present embodiment, including liquid crystal display body and
Backlight assembly.The liquid crystal display body includes the first polaroid being superposed, TFT driving unit, liquid crystal and colored filter
Mating plate, first polaroid are arranged on the backlight assembly；The colored filter is provided with several pixel units,
Each pixel unit includes red sub-pixel, green sub-pixels and blue subpixels.It is the blue light sub-pixel of each pixel unit, green
Sub-pixels and feux rouges sub-pixel are arranged side by side, or any existing way setting.
The backlight assembly includes fingerprint recognition backlight module, and the liquid crystal display body setting is carried on the back in the fingerprint recognition
The side of the light direction of optical module.
The fingerprint recognition backlight module includes OLED luminescent screen body 01 and fingerprint Identification sensor 12, and the fingerprint is known
The side of the OLED luminescent screen body 01 far from the liquid crystal display body is arranged in individual sensor 12.
When finger presses on liquid crystal display body, the light that the OLED luminescent screen body 01 issues passes through liquid crystal display
Body reaches finger, and the reflected light for reaching finger is sensed by liquid crystal display body, the imaging of OLED luminescent screen body 01 to fingerprint recognition
Device 12, to form fingerprint recognition signal.Specifically, when adjusting liquid crystal display device is non-application voltage, make liquid crystal molecule
In rotation status, the light that OLED luminescent screen body 01 is emitted successively passes through the first polaroid, thin film transistor (TFT), liquid crystal, coloured silk
Colo(u)r filter, the second polarizing film reach finger, since liquid crystal molecule is in rotation status, thus the light by the first polaroid
Line is rotated, it is made to pass through the second polaroid, reaches finger.The reflected light for reaching finger successively passes through the second polarization
Piece, colored filter, liquid crystal, thin film transistor (TFT), the first polaroid, OLED fingerprint recognition backlight module are imaged to fingerprint recognition and pass
Sensor.
The fingerprint recognition OLED luminescent screen body 01 can be OLED luminescent screen body structural example 1 to OLED luminescent screen body knot
Any one of structure example 5 structure.
Embodiment 2
As shown in figure 3, the liquid crystal display device with fingerprint identification function of the present embodiment, including liquid crystal display body and
Backlight assembly.The liquid crystal display body includes the first polaroid being superposed, TFT driving unit, liquid crystal and colored filter
Mating plate, first polaroid are arranged on the backlight assembly；The colored filter is provided with several pixel units,
Each pixel unit includes red sub-pixel R, green sub-pixels G, blue subpixels B and clear subpixel T.Each pixel unit
Blue light sub-pixel, green light sub-pixel, feux rouges sub-pixel and clear subpixel T can be to be set side by side shown in Figure 12, can also
Think any existing way setting.
The backlight assembly includes fingerprint recognition backlight module, and the liquid crystal display body setting is carried on the back in the fingerprint recognition
The side of the light direction of optical module.
The fingerprint recognition backlight module includes OLED luminescent screen body 01 and fingerprint Identification sensor 12, and the fingerprint is known
The side of the OLED luminescent screen body 01 far from the liquid crystal display body is arranged in individual sensor 12.
The fingerprint identification process of the present embodiment is the same as embodiment 1；
The line identification OLED luminescent screen body 01 can be OLED luminescent screen body structural example 1 to OLED luminescent screen body structure
Any one of example 5 structure
Embodiment 3
As shown in figure 4, the liquid crystal display device with fingerprint identification function of the present embodiment, including liquid crystal display body and
Backlight assembly.The liquid crystal display body includes the first polaroid being superposed, TFT driving unit, liquid crystal and colored filter
Mating plate, first polaroid are arranged on the backlight assembly；The colored filter is provided with several pixel units,
Each pixel unit includes red sub-pixel R, green sub-pixels G and blue subpixels B.The blue photons picture of each pixel unit
Element, green light sub-pixel, feux rouges sub-pixel are to be set side by side, or any existing way setting.
The liquid crystal display device is divided into fingerprint identification region and non-fingerprint identification region；The fingerprint identification region
Corresponding backlight assembly includes fingerprint recognition backlight module；Fingerprint recognition backlight module includes that OLED luminescent screen body 01 and fingerprint are known
Individual sensor 12, the fingerprint Identification sensor 12 are arranged in the OLED luminescent screen body 01 far from the liquid crystal display body
Side.
The corresponding backlight assembly of non-fingerprint identification region includes LED backlight mould group 03 and light guide plate 04, described
Light guide plate 04 is arranged between the LED backlight mould group 03 and liquid crystal display body.
When finger presses on the liquid crystal display body of fingerprint identification region, the light of the sending of OLED luminescent screen body 01
Finger is reached by liquid crystal display body, the reflected light for reaching finger is imaged by liquid crystal display body, OLED luminescent screen body 01
To fingerprint Identification sensor 12, to form fingerprint recognition signal.Specifically, when adjustment liquid crystal display device is non-application voltage
When, so that liquid crystal molecule is in rotation status, it is brilliant that the light that OLED luminescent screen body 01 is emitted successively passes through the first polaroid, film
Body pipe, liquid crystal, colored filter, the second polarizing film reach finger, since liquid crystal molecule be in rotation status, thus passing through the
The light of one polaroid is rotated, it is made to pass through the second polaroid, reaches finger.The reflected light for reaching finger successively passes through
Cross the second polarizing film, colored filter, liquid crystal, thin film transistor (TFT), the first polaroid, OLED fingerprint recognition backlight module be imaged to
Fingerprint Identification sensor.
The OLED luminescent screen body 01 can be OLED luminescent screen body structural example 1 into OLED luminescent screen body structural example 5
Any structure.
Embodiment 4
As shown in figure 5, the liquid crystal display device with fingerprint identification function of the present embodiment, including liquid crystal display body and
Backlight assembly.The liquid crystal display body includes the first polaroid being superposed, TFT driving unit, liquid crystal and colored filter
Mating plate, first polaroid are arranged on the backlight assembly；The colored filter is provided with several pixel units,
Each pixel unit includes red sub-pixel R, green sub-pixels G, blue subpixels B and clear subpixel T, each pixel unit
Blue light sub-pixel, green light sub-pixel, feux rouges sub-pixel, clear subpixel be to be set side by side, or it is any existing
Mode is arranged.
The liquid crystal display device is divided into fingerprint identification region and non-fingerprint identification region；The fingerprint identification region
Corresponding backlight assembly includes fingerprint recognition backlight module；Fingerprint recognition backlight module includes that OLED luminescent screen body 01 and fingerprint are known
Individual sensor 12, the fingerprint Identification sensor 12 are arranged in the OLED luminescent screen body 01 far from the liquid crystal display body
Side.
The corresponding backlight assembly of non-fingerprint identification region includes LED backlight mould group 03 and light guide plate 04, described
Light guide plate 04 is arranged between the LED backlight mould group 03 and liquid crystal display body.
As the optional mode of another kind, the region that the colored filter corresponds to fingerprint identification region is provided with several pictures
Plain unit, each pixel unit include red sub-pixel, green sub-pixels, blue subpixels and clear subpixel；The colour
The region that optical filter corresponds to non-fingerprint identification region is provided with several pixel units, each pixel unit include red sub-pixel,
Green sub-pixels, blue subpixels.The red sub-pixel of each pixel unit, green sub-pixels, blue subpixels and thoroughly
Pine torch pixel is set side by side；Red sub-pixel, green sub-pixels and the blue subpixels of each pixel unit are set side by side.
When finger presses on the liquid crystal display body of fingerprint identification region, the light of the sending of OLED luminescent screen body 01
Finger is reached by liquid crystal display body, the reflected light for reaching finger is imaged by liquid crystal display body, OLED luminescent screen body 01
To fingerprint Identification sensor 12, to form fingerprint recognition signal.Specifically, when adjustment liquid crystal display device is non-application voltage
When, so that liquid crystal molecule is in rotation status, it is brilliant that the light that OLED luminescent screen body 01 is emitted successively passes through the first polaroid, film
Body pipe, liquid crystal, colored filter, the second polarizing film reach finger, since liquid crystal molecule be in rotation status, thus passing through the
The light of one polaroid is rotated, it is made to pass through the second polaroid, reaches finger.The reflected light for reaching finger successively passes through
Cross the second polarizing film, colored filter, liquid crystal, thin film transistor (TFT), the first polaroid, OLED fingerprint recognition backlight module be imaged to
Fingerprint Identification sensor.
The OLED luminescent screen body 01 can be OLED luminescent screen body structural example 1 into OLED luminescent screen body structural example 5
Any structure.
OLED luminescent screen body of the invention has the following structure:
OLED luminescent screen body structural example 1
As shown in fig. 6, the OLED luminescent screen body in the present embodiment, comprising: transparent substrate 1 and encapsulation cover plate 5 are described transparent
By the formation confined space of sealing medium 15, the interior stacking of the confined space is provided with OLED device for substrate 1 and encapsulation cover plate 5；
It is packaging area around the confined space, the contact surface composition dispensing region of the sealing medium and the substrate 1 is described
OLED device includes light emitting region and non-luminous region；The packaging area is provided with light-shielding structure, and the light-shielding structure can
Stop OLED device light to pass through the dispensing region and enters substrate；Sealing medium is opaque UV glue in the present embodiment, described
Opaque sealing medium constitutes the light-shielding structure.
The OLED device includes: the first opaque material layer 71, the transparent anode layer being superposed on transparent substrate 1
2, several transparent insulation protrusions 6, organic material layer 3, transparent cathode 4 and encapsulation cover plate 5.As shown in figure 8, described first is impermeable
Bright material layer 71 is equipped with several micropores 10；The transparent insulation protrusion 6 is filled micropore and is arranged in the transparent anode layer 2
On, the organic material layer 3 covers transparent insulation protrusion 6 and transparent anode layer 2, due to the presence of transparent insulation protrusion 6,
The organic material no current of organic material layer above it passes through, and cannot shine, and forms non-luminous region.
The organic material layer 3 covers the transparent insulation protrusion 6 and is filled between adjacent transparent insulation protrusion 6
Gap, the transparent insulation protrusion 6 covers the micropore 10 in the projection on transparent substrate 1 and projects on transparent substrate 1, described
The cross-sectional area of transparent insulation protrusion 6 is equal to the cross-sectional area of the micropore 10.
The material of first opaque material layer 71 is without particular/special requirement, as long as opaque can be realized goal of the invention, Ke Yiwei
The metals such as metal layer such as Al Ag Cu or various alloys such as Mo/Al/Mo, Cr/Al/Cr etc..
10 shape of micropore of first opaque material layer 71 can be circle without particular/special requirement, and hexagon is square, three
It is angular, one or more of diamond shape, pentagon.
The a length of 500-570nm of luminescent light wave of the OLED screen body.
The diameter of the micropore is 10um-500um, and the spacing between the adjacent micropore is 10um-10mm.It needs
Illustrate, the diameter of micropore herein has the meaning that if micropore is circle, and diameter is that the circle of ordinary meaning is straight
Diameter；When the shape of micropore is other shapes, the diameter is its external diameter of a circle, described straight when for irregular shape
Diameter is the direct distance of the widest two o'clock of the graphic width.Spacing between adjacent cells refers to the nearest two o'clock of two neighboring micropore
The distance between.
The OLED screen body of the present embodiment the preparation method is as follows:
S1, form the first opaque material layer 71 on the transparent substrate and then carry out photoetching, make aperture by lithography, aperture it is straight
Diameter is 10um-500um, and the spacing between micropore is 10um-10mm；
S2, transparent anode layer 2 is prepared in the first opaque material layer 71, spin coating mode is formed on transparent anode layer 2
Then bright insulating layer is lithographically formed transparent insulation protrusion 6, transparent insulation protrusion 6 and projection of the micropore 10 on transparent substrate 1 again
It covers the micropore 10 to project on transparent substrate 1, the cross-sectional area of the transparent insulation protrusion 6 is slightly larger than the micropore 10
Cross-sectional area.If 10 diameter of micropore is 20um, then the diameter of transparent insulation protrusion 6 is 30um；
S3, successively vapor deposition forms organic material layer 3, transparent cathode 4 on transparent anode layer 2, is sealed with opaque UV glue
It fills to obtain the final product.
OLED luminescent screen body structural example 2
As shown in figure 8, the OLED luminescent screen body in the present embodiment, comprising: transparent substrate 1 and encapsulation cover plate 5 are described transparent
By the formation confined space of sealing medium 15, the interior stacking of the confined space is provided with OLED device for substrate 1 and encapsulation cover plate 5；
It is packaging area around the confined space, the contact surface composition dispensing region of the sealing medium and the substrate 1 is described
OLED device includes light emitting region and non-luminous region；The packaging area is provided with light-shielding structure, and the light-shielding structure can
Stop OLED device light to pass through the dispensing region and enters substrate；
The second opaque material layer 72 is provided between the sealing medium 15 and the transparent substrate 1, described first is not
Transparent material layer 71 and at least 1 second opaque material layer 72 are located remotely from the same side of light direction；Described second is not
Transparent material layer 72 constitutes the light-shielding structure；Second opaque material layer 72 can be identical material with the first opaque material layer 71
Material, and prepared by same layer.
As another embodiment, when encapsulation medium is opaque UV glue, the opaque sealing medium and
The second opaque material layer 72 collectively forms the light-shielding structure.
Other structures are with OLED luminescent screen body structural example 1, and this embodiment is not repeated.
OLED luminescent screen body structural example 3
As shown in figure 9, the OLED luminescent screen body in the present embodiment includes: transparent substrate 1 and encapsulation cover plate 5, it is described transparent
By the formation confined space of sealing medium 15, the interior stacking of the confined space is provided with OLED device for substrate 1 and encapsulation cover plate 2；
It is packaging area around the confined space, the contact surface composition dispensing region of the sealing medium and the substrate 1 is described
OLED device includes light emitting region and non-luminous region；The packaging area is provided with light-shielding structure, and the light-shielding structure can
Stop OLED device light to pass through the dispensing region and enters substrate；
The second opaque material layer 72 is provided between the sealing medium 15 and the transparent substrate 1, described first is not
Transparent material layer 71 and at least 1 second opaque material layer 72 are located remotely from the same side of light direction；Described second is not
Transparent material layer 72 constitutes the light-shielding structure；
When the encapsulation medium of the present embodiment is opaque UV glue, the opaque sealing medium and described second opaque
Material layer 72 collectively forms the light-shielding structure.
Other structures are with OLED luminescent screen body structural example 1, and this embodiment is not repeated.
OLED luminescent screen body structural example 4
As shown in Figure 10, the OLED luminescent screen body in the present embodiment includes: transparent substrate 1 and encapsulation cover plate 5, described transparent
By the formation confined space of sealing medium 15, the interior stacking of the confined space is provided with OLED device for substrate 1 and encapsulation cover plate 2；
It is packaging area around the confined space, the contact surface composition dispensing region of the sealing medium and the substrate 1 is described
OLED device includes light emitting region and non-luminous region；The packaging area is provided with light-shielding structure, and the light-shielding structure can
Stop OLED device light to pass through the dispensing region and enters substrate；
The outside of the sealing medium 15 is provided with third opaque material layer 73；73 structure of third opaque material layer
At the light-shielding structure；
As another embodiment, third opaque material layer 73 is arranged in the inside of the sealing medium 15；Described
Three opaque material layers 73 constitute the light-shielding structure；
As another embodiment, to be provided with second between the sealing medium 15 and the transparent substrate 1 opaque
Material layer 72, the third opaque material layer 73 and the second opaque material layer 72 collectively form the light-shielding structure.
The second opaque material layer 72,71 He of the first opaque material layer are provided between the transparent substrate 1
At least 1 second opaque material layer 72 is located remotely from the same side of light direction；Second opaque material layer, 72 structure
At the light-shielding structure；
Other structures are with OLED luminescent screen body structural example 1, and this embodiment is not repeated.
OLED luminescent screen body structural example 5
As shown in figure 11, the OLED luminescent screen body in the present embodiment includes: transparent substrate 1 and encapsulation cover plate 5, described transparent
By the formation confined space of sealing medium 15, the interior stacking of the confined space is provided with OLED device for substrate 1 and encapsulation cover plate 5；
It is packaging area, the contact surface composition dispensing region of the sealing medium and the substrate (1), institute around the confined space
Stating OLED device includes light emitting region and non-luminous region；The packaging area is provided with light-shielding structure, the light-shielding structure energy
Enough stop OLED device light to pass through the dispensing region and enters substrate；Sealing medium 15 is opaque UV glue in the present embodiment,
The opaque sealing medium constitutes the light-shielding structure.
Side of the transparent substrate 1 far from the transparent anode layer 2 is arranged in the first opaque material layer 71,
His structure is with OLED luminescent screen body structural example 1, and this embodiment is not repeated.
As implementable solution, the device of OLED of the Fig. 6 into Figure 11, wherein the first opaque material layer 71 can be set
It sets in side of the transparent substrate 1 far from the anode layer 2, other structures are the same as OLED luminescent screen body structural example 1, this implementation
Example repeats no more.
Light to issue convenient for expression OLED luminescent screen body encounters the optical path change after finger, in Fig. 6, Fig. 8 to Figure 11
In OLED luminescent screen body top to show finger, the liquid crystal display dress with fingerprint identification function actually of the invention
It sets, finger is placed on above liquid crystal display body in actual use, after the light that OLED luminescent screen body issues handles digital reflex,
Some light reaches optical sensor 12 after passing through the micropore 10 to form fingerprint recognition signal.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. a kind of liquid crystal display device with fingerprint identification function, including liquid crystal display body and backlight assembly, feature exist
In,
The backlight assembly includes fingerprint recognition backlight module, and the liquid crystal display body is arranged in the fingerprint recognition backlight mould
The side of the light direction of block.
2. according to claim 1 with the liquid crystal display device of fingerprint identification function, it is characterised in that:
The fingerprint recognition backlight module includes OLED luminescent screen body (01) and fingerprint Identification sensor (12), and the fingerprint is known
Individual sensor (12) setting is in side of the OLED luminescent screen body (01) far from the liquid crystal display body.
3. according to claim 1 with the liquid crystal display device of fingerprint identification function, it is characterised in that:
The liquid crystal display device is divided into fingerprint identification region and non-fingerprint identification region；
The corresponding backlight assembly of the fingerprint identification region includes fingerprint recognition backlight module；
The corresponding backlight assembly of non-fingerprint identification region includes LED backlight mould group (03) and light guide plate (04), described
Light guide plate (04) is arranged between the LED backlight mould group (03) and liquid crystal display body.
4. according to claim 3 with the liquid crystal display device of fingerprint identification function, it is characterised in that:
Fingerprint recognition backlight module includes OLED luminescent screen body (01) and fingerprint Identification sensor (12), and the fingerprint recognition passes
Sensor (12) setting is in side of the OLED luminescent screen body (01) far from the liquid crystal display body.
5. according to claim 1 with the liquid crystal display device of fingerprint identification function described in -4 any one, it is characterised in that:
The liquid crystal display body includes the first polaroid being superposed, TFT driving unit, liquid crystal and colored filter,
First polaroid is arranged on the backlight assembly；
The colored filter is provided with several pixel units, and each pixel unit includes red sub-pixel, green sub-pixels
And blue subpixels.
6. according to claim 5 with the liquid crystal display device of fingerprint identification function, it is characterised in that:
The pixel unit further includes clear subpixel.
7. according to claim 6 with the liquid crystal display device of fingerprint identification function, which is characterized in that each pixel unit
Blue light sub-pixel, green light sub-pixel and feux rouges sub-pixel and clear subpixel be arranged side by side.
8. with the liquid crystal display device of fingerprint identification function according to claim 3 or 4, it is characterised in that:
The liquid crystal display body includes the first polaroid being superposed, TFT driving unit, liquid crystal and colored filter,
First polaroid is arranged on the backlight assembly；
The region that the colored filter corresponds to fingerprint identification region is provided with several pixel units, and each pixel unit includes red
Sub-pixels, green sub-pixels, blue subpixels and clear subpixel；
The region that the colored filter corresponds to non-fingerprint identification region is provided with several pixel units, and each pixel unit includes
Red sub-pixel, green sub-pixels, blue subpixels.
9. according to claim 8 with the liquid crystal display device of fingerprint identification function, it is characterised in that:
Red sub-pixel, green sub-pixels, blue subpixels and the clear subpixel of each pixel unit are set side by side；
Red sub-pixel, green sub-pixels and the blue subpixels of each pixel unit are set side by side.
10. according to claim 1 with the liquid crystal display device of fingerprint identification function described in -9 any one, it is characterised in that:
OLED luminescent screen body includes the transparent substrate (1) being superposed, transparent anode layer (2), organic light-emitting units (3) and transparent cathode
Layer (4), the OLED screen body are provided with several light emitting regions and non-luminous region；
The screen body outside of the side of the OLED screen body far from its light direction is internally provided with opaque material layer (7), institute
Opaque material layer (7) are stated equipped with several micropores (10), the micropore (10) is correspondingly arranged with the non-luminous region.
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| CN201810859177.5A CN108957856A (en) | 2018-07-31 | 2018-07-31 | With fingerprint recognition liquid crystal display body |
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|---|---|---|---|
| CN201810859177.5A CN108957856A (en) | 2018-07-31 | 2018-07-31 | With fingerprint recognition liquid crystal display body |
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