CN106249457A - A kind of control method of array base palte, display device and fingerprint recognition - Google Patents
A kind of control method of array base palte, display device and fingerprint recognition Download PDFInfo
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- CN106249457A CN106249457A CN201610852651.2A CN201610852651A CN106249457A CN 106249457 A CN106249457 A CN 106249457A CN 201610852651 A CN201610852651 A CN 201610852651A CN 106249457 A CN106249457 A CN 106249457A
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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
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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
- G02F1/13338—Input devices, e.g. touch panels
-
- 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
- G02F1/1343—Electrodes
-
- 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
- G02F1/1343—Electrodes
- G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
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- Nonlinear Science (AREA)
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The embodiment of the present invention provides a kind of array base palte, display device and the control method of fingerprint recognition, relates to Display Technique field, it is possible in the case of display floater display picture, identify fingerprint by the viewing area of display floater.Underlay substrate is provided with grid line and data wire that transverse and longitudinal is intersected, grid line and data wire intersection and defines at least one sub-pix；Array base palte arranges multiple photo-sensitive cell, photo-sensitive cell is arranged between adjacent two sub-pixs, photo-sensitive cell connects drive signal line and reads holding wire, photo-sensitive cell is under the control of drive signal line, receive finger reflection light, and carrying out photoelectric conversion, the signal of telecommunication after converting is from the reading holding wire output being connected with this photo-sensitive cell.
Description
Technical field
The present invention relates to Display Technique field, particularly relate to the control of a kind of array base palte, display device and fingerprint recognition
Method processed.
Background technology
Along with the development of Display Technique, display device is except realizing display function, additionally it is possible to realize increasing
Personalized function, such as online social activity, ecommerce etc., in order to protect the personal information storing in display device and using, just
Require that first display device can carry out identification and the certification of identity to the user using display device, right to realize
The privacy protection of user profile.
Fingerprint is the lines collectively formed by the paddy of ridge protruding on finger tip skin and depression, and fingerprint is as one of human body
Unchangeable and there is specific biological characteristic, because it is easy to use, and there is uniqueness, more and more apply
In the identification of personal identification and field of authentication.
The existing optical finger print identification being applied in display device, such as unlocked by fingerprint, it is generally disposed at photographic head position
Putting place, finger is positioned over the fingerprint identification area at the camera position of display device by user, is caught by photographic head or shoots
Ridge on fingerprint or the light of the different directions of paddy reflection, it is achieved the identification to fingerprint.
Owing to the photographic head of display device is usually located at taking the photograph of the housing side outside display floater or the back side, such as mobile phone
As head, being i.e. positioned at the back side of mobile phone display screen, using camera position to carry out unlocked by fingerprint is to need to overturn to the back side mobile phone
After finger plaster is invested at photographic head, at upset mobile phone to front checking unlocked by fingerprint whether success, this fingerprint recognition mode
Operation inconvenience, affects the comfort of user.
Summary of the invention
The embodiment of the present invention provides a kind of array base palte, display device and the control method of fingerprint recognition, it is possible to aobvious
In the case of showing Display panel picture, identify fingerprint by the viewing area of display floater.
For reaching above-mentioned purpose, embodiments of the invention adopt the following technical scheme that
The one side of the embodiment of the present invention, it is provided that a kind of array base palte, is provided with the grid that transverse and longitudinal is intersected on underlay substrate
Line and data wire, grid line and data wire intersection define at least one sub-pix；Array base palte arranges multiple photo-sensitive cell, sense
Optical element is arranged between adjacent two sub-pixs, and photo-sensitive cell connects drive signal line and reads holding wire, and photo-sensitive cell is used
In under the control of drive signal line, receive finger reflection light, and carry out photoelectric conversion, the signal of telecommunication after converting from this
The reading holding wire output that photo-sensitive cell is connected.
Preferably, photo-sensitive cell is included in the second electrode, photoelectric conversion layer and first set gradually on underlay substrate
Electrode；Wherein, the first electrode is made up of transparent conductive material.
Further, when array base palte includes pixel electrode or public electrode, the first electrode and pixel electrode or public
Electrode is with the same material of layer.
Preferably, when array base palte includes public electrode, the first electrode shares with public electrode, and drive signal line is with public
Common-battery polar curve shares, and reads holding wire and the second electrode is connected；Or, the second electrode shares with public electrode, drives signal
Line shares with public electrode wire, reads holding wire and the first electrode is connected.
Further, the second electrode is made up of metal material.
Further, the second electrode and described grid line or described data wire are with the same material of layer.
Optionally, multiple photo-sensitive cells are matrix form arrangement, the reading holding wire being connected with photo-sensitive cell and driving
Holding wire is arranged in a crossed manner, and multiple photo-sensitive cells of every a line are connected with same drive signal line, and drive signal line is used for out
Open multiple photo-sensitive cells of this row.
Further, photo-sensitive cell is arranged on the position corresponding with grid line, and arranges with grid line insulation.
The another aspect of the embodiment of the present invention, it is provided that a kind of display device, including above-mentioned array base palte, and with above-mentioned
Array base palte be correspondingly arranged to box substrate, photo-sensitive cell position corresponding on box substrate is not provided with black matrix.
Preferably, when the array base palte of display device and to box substrate between be provided with liquid crystal layer time, to box substrate carry on the back
The side of array base palte is provided with λ/4 wave plate, and deviating from the side of array base palte at λ/4 wave plate, to be provided with first inclined
Mating plate；Deviate from the side to box substrate at array base palte and be provided with the 2nd λ/4 wave plate, deviate from box substrate at the 2nd λ/4 wave plate
Side be provided with the second polaroid；Wherein, the major axes orientation of λ/4 wave plate and the 2nd λ/4 wave plate is mutually perpendicular to；First is inclined
The light transmission shaft direction of mating plate and the second polaroid is mutually perpendicular to.
The another further aspect of the embodiment of the present invention, it is provided that the control method of a kind of fingerprint recognition, uses above-mentioned display device to enter
Row fingerprint recognition, including, in the touch-control stage, photo-sensitive cell, under the control of drive signal line, receives finger reflection light；Photosensitive
The finger received reflection light is carried out photoelectric conversion by element, and by reading the signal of telecommunication output after holding wire will convert.
Further, multiple photo-sensitive cells be matrix form arrangement, the reading holding wire being connected with photo-sensitive cell with
Drive signal line is arranged in a crossed manner, when multiple photo-sensitive cells of every a line are connected with same drive signal line, in the touch-control stage,
Photo-sensitive cell, under the control of drive signal line, receives finger reflection light and includes, drive signal line input drive signal line by line,
To drive photo-sensitive cell to open line by line；The photo-sensitive cell opened receives finger reflection light.
Preferably, the touch-control stage is between adjacent two picture frames.
The embodiment of the present invention provides a kind of array base palte, display device and the control method of fingerprint recognition, at substrate base
It is provided with grid line and data wire that transverse and longitudinal is intersected, grid line and data wire intersection on plate and defines at least one sub-pix；At array base
Arranging multiple photo-sensitive cell on plate, photo-sensitive cell is arranged between adjacent two sub-pixs, and photo-sensitive cell connects drive signal line
With read holding wire, photo-sensitive cell under the control of drive signal line, receives finger reflection light, and carries out photoelectricity and turn
Changing, the signal of telecommunication after converting is from the reading holding wire output being connected with this photo-sensitive cell.Array base palte is positioned at adjacent
Two sub-pixs between photo-sensitive cell is set, do not interfere with the size of sub-pix split shed rate, do not affect display floater and show
Region normal pictures shows.Finger is placed on the viewing area of display floater, and photo-sensitive cell is under the control of drive signal line
It is able to receive that finger reflects light, and the reflection light received is carried out after photoelectric conversion by reading holding wire output, it is achieved
The identification of finger print information.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
The structural representation of a kind of array base palte that Fig. 1 provides for the embodiment of the present invention；
Fig. 2 is that light exposes to finger and reflexes to the schematic diagram of photo-sensitive cell；
Fig. 3 is the hierarchical structure figure of photo-sensitive cell in Fig. 1；
Fig. 4 is one of the cut away view in Fig. 1 along A1-A2-A3 direction；
Fig. 5 be in Fig. 1 along A1-A2-A3 direction cut away view two；
Fig. 6 be in Fig. 1 along A1-A2-A3 direction cut away view three；
Fig. 7 be in Fig. 1 along A1-A2-A3 direction cut away view four；
The structural representation of the another kind of array base palte that Fig. 8 provides for the embodiment of the present invention；
Fig. 9 is the cut away view in Fig. 8 along A4-A5-A6 direction；
The cut away view of a kind of display device that Figure 10 provides for the embodiment of the present invention；
The structural representation of a kind of display device that Figure 11 provides for the embodiment of the present invention；
The flow process of a kind of control method using display device to carry out fingerprint recognition that Figure 12 provides for the embodiment of the present invention
Figure one；
The flow process of a kind of control method using display device to carry out fingerprint recognition that Figure 13 provides for the embodiment of the present invention
Figure two.
Reference:
00-array base palte；01-underlay substrate；02-grid line；03-data wire；04-sub-pix；05-photo-sensitive cell；051-
First electrode；052-the second electrode；053-photoelectric conversion layer；06-drive signal line；07-reads holding wire；08-public electrode；
081-public electrode wire；09-pixel electrode；10-is to box substrate；11-black matrix；20-liquid crystal layer；30-the oneth λ/4 wave plate；40-
2nd λ/4 wave plate；50-the first polaroid；60-the second polaroid；Cutting direction in A1, A2, A3-Fig. 1；A4, A5, A6-Fig. 8
In cutting direction；The light that A-Fig. 9 ambient light is injected by display device display surface；B-backlight sends and handles digital reflex
Light；The light for display of C-backlight outgoing；X-backlight illumination is to the light on finger print two-story valley；Y-backlight illumination is extremely
Light on finger print median ridge；The Z-region to being not provided with black matrix on box substrate.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
The embodiment of the present invention provides a kind of array base palte, as it is shown in figure 1, be provided with what transverse and longitudinal was intersected on underlay substrate 01
Grid line 02 and data wire 03, grid line 02 and data wire 03 intersection define at least one sub-pix 04；Array base palte is arranged many
Individual photo-sensitive cell 05, photo-sensitive cell 05 is arranged between adjacent two sub-pixs 04, and photo-sensitive cell 05 connects drive signal line 06
With reading holding wire 07, photo-sensitive cell 05, under the control of drive signal line 06, receives finger reflection light, and carries out light
Electricity converts, and the signal of telecommunication after converting exports from the reading holding wire 07 being connected with this photo-sensitive cell 05.
It should be noted that first, photo-sensitive cell 05 is can be converted into by the light of varying strength down in working order
Different size of photoelectric current the electrooptical device exported.Finger surface is densely covered with the pattern formed by valley and a ridge, its two-story valley
For the groove of depression, ridge is protruding rib.Boundary is contacted at finger and display device display surface owing to being incident to the light of finger ridge
Face can be absorbed or be occurred diffuse-reflectance, and is incident to the light contact interface at finger Yu display device display surface of finger paddy
Being totally reflected, so that relatively big by the light intensity of spinal reflex, the light intensity reflected by paddy is less, so, and energy
Enough different optical signals by the reflection of valley and a ridge position are converted into the different signals of telecommunication.
Due to finger be pressed against on display device display surface carry out fingerprint reading or identify time, finger pressing region long-range
In the size of a photo-sensitive cell 05, therefore, as in figure 2 it is shown, by multiple photo-sensitive cell 05 spread configurations, finger is i.e. placed in multiple
On photo-sensitive cell 05, each photo-sensitive cell 05 receives the reflection light from finger various location, as in Fig. 2, X-ray line shines
Being incident upon the paddy of finger and reflex to photo-sensitive cell 05, the light signal strength value obtained is less, and Y light exposes to the spinal reflex of finger
To photo-sensitive cell 05, the light signal strength value obtained is relatively big, and the light intensity of acquisition is converted by the photo-sensitive cell 05 receiving light respectively
For the correspondingly sized signal of telecommunication and be delivered to processor, it becomes possible to realize acquisition or the knowledge of the pattern different to finger superficial makings
Not.
Second, photo-sensitive cell 05 is arranged between adjacent two sub-pixs 04, is i.e. arranged in beyond sub-pix 04
Position, so will not produce impact to the transmitance of sub-pix 04.Wherein, photo-sensitive cell 05 can be arranged on as shown in Figure 1
Between upper and lower two adjacent sub-pixs 04, it is also possible to be arranged between left and right two adjacent sub-pixs 04.Additionally, it is photosensitive
Element 05 can be respectively provided with between the sub-pix 04 adjacent in each two as shown in Figure 1, it is also possible to is separated by setting, such as, is separated by
Three sub-pixs 04 arrange a photo-sensitive cell 05.Owing to the pattern between the valley and a ridge on finger lines is compared to photo-sensitive cell
For 05 relatively greatly, therefore, on the premise of photo-sensitive cell 05 can effectively identify the valley and a ridge on finger lines, it is contemplated that processing
The factors such as cost, it is preferred that the most adjacent 5～20 sub-pixs 04 arrange a photo-sensitive cell 05.
The embodiment of the present invention provides a kind of array base palte, display device and the control method of fingerprint recognition, at substrate base
It is provided with grid line and data wire that transverse and longitudinal is intersected, grid line and data wire intersection on plate and defines at least one sub-pix；At array base
Arranging multiple photo-sensitive cell on plate, photo-sensitive cell is arranged between adjacent two sub-pixs, and photo-sensitive cell connects drive signal line
With read holding wire, photo-sensitive cell under the control of drive signal line, receives finger reflection light, and carries out photoelectricity and turn
Changing, the signal of telecommunication after converting is from the reading holding wire output being connected with this photo-sensitive cell.Array base palte is positioned at adjacent
Two sub-pixs between photo-sensitive cell is set, do not interfere with the size of sub-pix split shed rate, do not affect display floater and show
Region normal pictures shows.Finger is placed on the viewing area of display floater, and photo-sensitive cell is under the control of drive signal line
It is able to receive that finger reflects light, and the reflection light received is carried out after photoelectric conversion by reading holding wire output, it is achieved
The identification of finger print information.
Further, as it is shown on figure 3, the structure of photo-sensitive cell 05 is specifically as follows, underlay substrate 01 sets gradually
The second electrode 052, photoelectric conversion layer 053 and the first electrode 051；Wherein, the first electrode 051 is made up of transparent conductive material.
Hereinafter the structure of photoelectric conversion layer 053 in photo-sensitive cell 05 is further explained explanation.
Such as, photoelectric conversion layer 053 can be PIN structural.Concrete, including a p type semiconductor layer and a N-type half
Conductor layer, arranges intrinsic semiconductor layer I between p type semiconductor layer and n type semiconductor layer, forms PIN structural, wherein it is possible to
Being positioned at upper strata for p type semiconductor layer, n type semiconductor layer is positioned at lower floor, it is also possible to be positioned at upper strata for n type semiconductor layer, and p-type is partly led
Body layer is positioned at lower floor.P type semiconductor layer can use the mixed gas of SiH4, CH4, B2H6, He by PECVD (Plasma
Enhanced Chemical Vapor Deposition, plasma enhanced chemical vapor deposition method) form boron ion doping
Amorphous silicon membrane；N type semiconductor layer can use and by PECVD, the mixed gas of SiH4, PH3, H2, He is formed phosphonium ion
The amorphous silicon membrane of doping；Intrinsic semiconductor layer can be used and be formed by PECVD undoped non-by SiH4, H2 mixed gas
Polycrystal silicon film.
When p type semiconductor layer be positioned at upper strata, n type semiconductor layer is positioned at lower floor, intrinsic semiconductor layer I is positioned at P-type semiconductor
Time between layer and n type semiconductor layer, the upper and lower of photoelectric conversion layer 053 in this PIN structural is respectively provided with the first electrode 051 He
Second electrode 052 forms photo-sensitive cell 05, and the light being radiated on photo-sensitive cell 05 is realized photoelectric conversion, if turned photoelectricity
The PIN structural changing layer 053 uses forward connection, i.e. puts on the voltage of p type semiconductor layer more than putting on n type semiconductor layer
Voltage, in the case, owing to the direction of an electric field of applied voltage is in opposite direction with built-in field, weakens built-in field, and then
The drift of the photo-generated carrier in suppression intrinsic semiconductor layer, causes the photogenerated current of this PIN structural to cannot be carried out effectively and examines
Survey.Therefore, PIN structural uses reverse connection, i.e. puts on the voltage of p type semiconductor layer less than putting on n type semiconductor layer
Voltage, in the case, this PIN structural is in reverse-bias state, the direction of an electric field of applied voltage and built-in field direction phase
With so that built-in field is strengthened, and then can promote the drift of photo-generated carrier in intrinsic semiconductor layer, it is possible to effectively
The photogenerated current of this PIN structural is detected.
The most such as, photoelectric conversion layer 053 can be can also for PN junction structure, the most only include a p type semiconductor layer and
One n type semiconductor layer, forms p type semiconductor layer and the interface of n type semiconductor layer, i.e. PN junction by special process.Work
Ibid, here is omitted for principle.
Further, as shown in Figure 4, when array base palte being included on underlay substrate 01 public electrode 08 layer made,
First electrode 051 and public electrode 08 are with the same material of layer, and are made by a patterning processes.
Or, during as it is shown in figure 5, be included on underlay substrate 01 pixel electrode 09 layer made on array base palte, first
Electrode 051 and pixel electrode 09 are with the same material of layer, and are made by a patterning processes.
So, it is possible to simplify the manufacturing process steps of the array base palte of the present invention, it is not necessary to individually increase making first
The processing step of electrode 051, but make the first electrode 051 while making public electrode 08 or pixel electrode 09, and
And public electrode 08 or the generally transparent conductive material of pixel electrode 09 are made, transparent conductive material disclosure satisfy that equally
The requirement making material of the first electrode 051, it is possible to conduction and light can expose to photoelectric conversion layer through the first electrode 051
On 053, make on photo-sensitive cell 05, to occur photoelectric conversion reaction to produce the signal of telecommunication.
Preferably, as shown in Figure 6, when array base palte includes public electrode 08, the first electrode 051 is with public electrode 08 altogether
With, drive signal line 06 shares with public electrode wire 081, reads holding wire 07 and is connected with the second electrode 052.
Or, the second electrode 052 shares with public electrode 08, and drive signal line 06 shares with public electrode wire 081, reads
Holding wire 07 is connected with the first electrode 051.
So, as shown in Figure 6, when the first electrode 051 shares with public electrode 08, drive signal line 06 and common electrical
When polar curve 081 shares, the first electrode 051 and provide power supply at public electrode wire 081 for public electrode 08 for the first electrode 051
Time, i.e. drive signal line 06 energising drives the first electrode 051 to work.Now, the second electrode 052 is connected with reading holding wire 07,
For reading and export the photoelectric conversion signal between the first electrode 051 and the second electrode 052.
Or, when the second electrode 052 shares with public electrode 08, when drive signal line 06 and public electrode wire 081 share,
Second electrode 052 and for second electrode 052 provide drive signal drive signal line 06 without being separately provided, the specifically side of setting
Ibid, here is omitted for formula and operation principle.
Second electrode 052 needs the material by conducting electricity to produce, it is preferred that the second electrode being made up of metal material
052, there is higher electrical efficiency, data measured accuracy is higher.
Preferably, as it is shown in fig. 7, the second electrode 052 and grid line 02 layer are with the same material of layer.So, the second electrode 052
Can be configured when arranging the metal level of grid line 02, it is to avoid additionally increase the technique being separately provided the second electrode 052 simultaneously
Step.
Additionally, the second electrode 052 can also with data wire 03 with layer with material arrange, method step ibid, the most no longer
Repeat.
Further, as it is shown in figure 1, multiple photo-sensitive cell 05 arranges in matrix form, it is connected with photo-sensitive cell 05
Read holding wire 07 arranged in a crossed manner with drive signal line 06, multiple photo-sensitive cells 05 and the same drive signal line 06 of every a line
Being connected, drive signal line 06 is for opening multiple photo-sensitive cells 05 of this row.
So, reading holding wire 07 arranged in a crossed manner and that be all connected with photo-sensitive cell 05 and drive signal line 06 energy
Enough grid lines 02 the most arranged in a crossed manner with on array base palte and data wire 03 position are correspondingly arranged, such as it is shown in figure 1, drive signal line
06 is corresponding with data wire 03 position, reads holding wire 07 corresponding with grid line 02 position, and a drive signal line 06 can drive out
Open the multiple photo-sensitive cells 05 in a line, it is to avoid be respectively provided with single drive signal line 06 for each photo-sensitive cell 05, save
On array base palte drive signal line 06 quantity is set, decrease the wiring space that holding wire takies on array base palte, and drive
The total quantity of dynamic holding wire 06 reduces, and when reducing that substrate is internal closely to be connected up in a large number, holding wire is easily broken off or increases signal
The rate of breakdown that linear contact lay is bad, when drive signal line 06 opens photo-sensitive cell 05, is connected with this photo-sensitive cell 05
Read holding wire 07 read signal and export.
Preferably, as shown in Figure 8, photo-sensitive cell 05 is arranged on the position corresponding with grid line 02, as it is shown in figure 9, photosensitive
Element 05 is arranged with grid line 02 insulation.
So, photo-sensitive cell 05 utilizes the region of grid line 02 cabling on array base palte to be arranged on the corresponding position of grid line 02
Put and insulate with grid line 02, it is not necessary to additionally taking other regional spaces on array base palte, and photo-sensitive cell 05 and grid line 02
Insulation, does not interferes with the normal operating conditions of grid line 02.
Another aspect of the present invention, it is provided that a kind of display device, including any one array base palte above-mentioned, and and array
Substrate be correspondingly arranged to box substrate 10, as shown in Figure 10, the position of photo-sensitive cell 05 corresponding on box substrate 10 is not provided with
Black matrix 11.
So, finger covers when the display surface of display device, as shown in Figure 10, due to right on box substrate 10
Answering and be not provided with black matrix 11 at the position Z of photo-sensitive cell 05, backlight exposes to the light of finger and is reflexed to photosensitive unit by finger
On part 05, to produce photoelectric conversion signal on photo-sensitive cell 05.
In order to ensure that backlight exposes to the light of finger and avoids being absorbed by black matrix 11 and cannot reflex to photo-sensitive cell
It is used on 05 identifying fingerprint, at the position Z to photo-sensitive cell 05 corresponding on box substrate 10, is not provided with black matrix 11,
Due to photo-sensitive cell 05 be by the second electrode 052 set gradually on underlay substrate 01, photoelectric conversion layer 053 and
First electrode 051 composition, the second electrode 052 is in order to ensure electric conductivity, it will usually choose transparent conductive material or metal material
Material, when the second electrode 052 is metal material, owing to metal material can make light line reflection, by being not provided with on box substrate 10
The ambient light that the position of black matrix 11 is injected, through the display surface outgoing reflecting backward display device of the second electrode 052, meeting
Disturb with the light of the normal display picture of display device, affect the picture display effect of display device.
Therefore, it is further preferred that as shown in figure 11, when the array base palte 00 of display device and to box substrate 10 between set
When being equipped with liquid crystal layer 20, the side that box substrate 10 is deviated from array base palte 00 is provided with λ/4 wave plate 30, in λ/4
Wave plate 30 deviates from the side of array base palte 00 and is provided with the first polaroid 50.The side to box substrate 10 is deviated from array base palte 00
It is provided with the 2nd λ/4 wave plate 40, deviates from the side to box substrate 10 at the 2nd λ/4 wave plate 40 and be provided with the second polaroid 60.Its
In, λ/4 wave plate 30 is mutually perpendicular to the major axes orientation of the 2nd λ/4 wave plate 40；First polaroid 50 and the second polaroid 60
Light transmission shaft direction be mutually perpendicular to.
In display device as shown in figure 11, it is used for light C in the backlight light such as figure maintaining display device normally to show
Shown in, C light becomes line polarized light by after the second polaroid 60, then becomes circularly polarized light after the 2nd λ/4 wave plate 40, should
Circularly polarized light polarization direction of circularly polarized light after liquid crystal layer 20 is reverse, the most again through λ/4 wave plate 30, due to first
λ/4 wave plate 30 is mutually perpendicular to the major axes orientation of the 2nd λ/4 wave plate 40, and therefore C light can be all by λ/4 wave plate 30
And become line polarized light, owing to the light transmission shaft direction of the first polaroid 50 with the second polaroid 60 is mutually perpendicular to, become linear polarization
The C light of light is completely by the first polaroid 50 outgoing, it is achieved the normal display of display device.And, by controlling liquid crystal layer
The deflection state of 20, can change the polarization direction of backlight light C, it is achieved whole by the optical delay amount adjusting liquid crystal layer 20
The GTG of individual display device shows.
For the ambient light by the incidence of display device display surface, such as the ambient light A in Figure 11 exposes to the first polarisation
Sheet 50, is converted to line polarized light incident, the part light that in A light, polarization direction is identical with the light transmission shaft direction of the first polaroid 50
Line passes through, and becomes circularly polarized light through λ/4 wave plate 30.A light is reflected back λ/4 wave plate 30 by photo-sensitive cell 05,
The yawing moment of the circularly polarized light of reflection is contrary, therefore through λ/4 wave plate with the yawing moment of incident circularly polarized light
The polarization direction of the 30 A light being converted to line polarized light differs 90 °, the most completely by the first polarisation with polarization direction time incident
Sheet 50 stops and cannot outgoing, it is achieved prevent reflection of ambient light from affecting the purpose of display effect.Owing to photo-sensitive cell 05 is arranged
Between adjacent two sub-pixs 04, the yawing moment of the liquid crystal layer 20 in this region does not changes, therefore, and anti-reflection effect
Reliable and stable.
The photo-sensitive cell 05 light for fingerprint recognition is reflexed to, in Figure 11 for backlight illumination to finger and by finger
B light, reflects at finger covering, and reflection light is injected on photo-sensitive cell 05, when the driving letter being connected with photo-sensitive cell 05
When number line 06 is opened, optical signal is exported to processor by the reading holding wire 07 that photo-sensitive cell 05 connects.Carry out fingerprint recognition
Time, comprise into multiple photo-sensitive cells 05 of matrix form arrangement at finger covering position, owing on finger, diverse location is distributed this
Shape, the valley and a ridge that distance is the most different, the reflected light signal that the most different photo-sensitive cells 05 receives also differs, processor
The signal record that exported by multiple photo-sensitive cells 05 also processes, and i.e. can get specific finger print information.
Also, it should be noted when processor is previously stored with finger print information, it is also possible to the fingerprint letter that will read
Breath compares with the finger print information prestored, it is achieved the identification to known pre-stored fingerprint.
Another aspect of the invention, it is provided that a kind of control method using above-mentioned display device to carry out fingerprint recognition, such as figure
Shown in 12, including:
S101, in the touch-control stage, photo-sensitive cell 05 under the control of drive signal line 06, receive finger reflection light；
The finger received reflection light is carried out photoelectric conversion by S102, photo-sensitive cell 05, and will by reading holding wire 07
Signal of telecommunication output after conversion.
In the above-mentioned touch-control stage, when i.e. referring to carry out fingerprint recognition on the display apparatus, finger is placed on the display of display device
On face, drive signal line 06 provides and drives signal, opens photo-sensitive cell 05 and works, and photo-sensitive cell 05 receives finger reflection light,
And carrying out photoelectric conversion, the signal of telecommunication after converting is exported by reading holding wire 07.In the non-touch-control stage, photo-sensitive cell 05 not work
Make, the light of reflection is not carried out photoelectric conversion and exports.The touch-control stage can control drive signal line 06 and be configured, example
As could be arranged to timing, drive signal line 06 scanning being opened, could be arranged to normally opened, it is also possible to by specific operation control
Open, this is not especially limited herein.
Further, arrange in matrix form at multiple photo-sensitive cells 05, the reading signal being connected with photo-sensitive cell 05
Line 07 is arranged in a crossed manner with drive signal line 06, and multiple photo-sensitive cells 05 of every a line are connected with same drive signal line 06
Time, as shown in figure 13, S101, in the touch-control stage, photo-sensitive cell 05, under the control of drive signal line 06, receives finger reflection light
Line includes,
S1011, drive signal line 06 input drive signal line by line, to drive photo-sensitive cell 05 to open line by line；
S1012, the photo-sensitive cell 05 of unlatching receive finger reflection light.
So, photo-sensitive cell 05 is opened line by line, obtains finger print information in the way of progressive scan, it is possible to reduces and works as institute
There are a large amount of power consumptions that photo-sensitive cell 05 consumes when being held open state the most simultaneously.
Preferably, the touch-control stage is between adjacent two picture frames.Display image in display device shows frame by frame
During, utilize the blanking time between adjacent two picture frames, open drive signal line 06, it is achieved the fingerprint in touch-control stage is known
Not.Make the display function of display device not by driving signal and reading signal and affected needed for fingerprint recognition, can be real
While existing viewing area optical finger print identification, it is ensured that the normal display of display device.
Additionally, the photo-sensitive cell 05 of the present invention can be produced on array base palte 00 by the way of spatter film forming, go forward side by side
One step etching is formed.So, when array base palte 00 with to box substrate 10 to box and when irrigating liquid crystal, the entirety of liquid crystal layer 20
Thickness is the most identical, controls the difficulty that liquid crystal deflection shows when reducing perfusion liquid crystal and liquid crystal layer 20 thickness difference, with
Time be also convenient for the design of chock insulator matter in liquid crystal.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, and any
Those familiar with the art, in the technical scope that the invention discloses, can readily occur in change or replace, should contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with described scope of the claims.
Claims (13)
1. an array base palte, it is characterised in that be provided with grid line and data wire, described grid that transverse and longitudinal is intersected on underlay substrate
Line and described data wire intersection define at least one sub-pix；
Described array base palte arranges multiple photo-sensitive cell, described photo-sensitive cell be arranged on adjacent two described sub-pixs it
Between, described photo-sensitive cell connects drive signal line and reads holding wire, and described photo-sensitive cell is for the control at drive signal line
Under, receiving finger reflection light, and carry out photoelectric conversion, the signal of telecommunication after converting is from the reading being connected with this photo-sensitive cell
Holding wire exports.
Array base palte the most according to claim 1, it is characterised in that described photo-sensitive cell is included on described underlay substrate
The second electrode, photoelectric conversion layer and the first electrode set gradually；Wherein, described first electrode is by transparent conductive material system
Become.
Array base palte the most according to claim 2, it is characterised in that when described array base palte includes pixel electrode or public
During electrode, described first electrode and described pixel electrode or described public electrode are with the same material of layer.
Array base palte the most according to claim 2, it is characterised in that when described array base palte includes public electrode, institute
Stating the first electrode and described public electrode to share, described drive signal line shares with public electrode wire, described reading holding wire with
Described second electrode is connected；
Or, described second electrode shares with described public electrode, and described drive signal line shares with described public electrode wire, institute
State reading holding wire to be connected with described first electrode.
Array base palte the most according to claim 2, it is characterised in that described second electrode is made up of metal material.
Array base palte the most according to claim 5, it is characterised in that described second electrode and described grid line or described data
Line is with the same material of layer.
Array base palte the most according to claim 2, it is characterised in that the plurality of photo-sensitive cell is matrix form arrangement,
The described reading holding wire being connected with described photo-sensitive cell is arranged in a crossed manner with described drive signal line, every a line multiple described
Photo-sensitive cell is connected with drive signal line described in same, and described drive signal line is for opening the multiple described photosensitive of this row
Element.
Array base palte the most according to claim 1, it is characterised in that described photo-sensitive cell is arranged on relative with described grid line
The position answered, and arrange with the insulation of described grid line.
9. a display device, including the array base palte as described in any one of claim 1-8, and with described array base palte pair
Should arrange to box substrate, it is characterised in that described described photo-sensitive cell position corresponding on box substrate is not provided with black matrix.
Display device the most according to claim 9, it is characterised in that when described display device described array base palte with
Described to when being provided with liquid crystal layer between box substrate, the described side that box substrate is deviated from described array base palte is provided with first
λ/4 wave plate, the side deviating from described array base palte at described λ/4 wave plate is provided with the first polaroid；
Deviate from the described side to box substrate at described array base palte and be provided with the 2nd λ/4 wave plate, at the described 2nd λ/4 wave plate back of the body
The described side to box substrate is provided with the second polaroid；
Wherein, described λ/4 wave plate is mutually perpendicular to the major axes orientation of described 2nd λ/4 wave plate；Described first polaroid with
The light transmission shaft direction of described second polaroid is mutually perpendicular to.
11. 1 kinds use the control method that the display device as described in any one of claim 9-10 carries out fingerprint recognition, and it is special
Levy and be, including,
In the touch-control stage, photo-sensitive cell, under the control of drive signal line, receives finger reflection light；
The described finger received reflection light is carried out photoelectric conversion by described photo-sensitive cell, and by reading holding wire by after conversion
The signal of telecommunication output.
12. control methods according to claim 11, it is characterised in that the plurality of photo-sensitive cell be matrix form row
Row, the described reading holding wire being connected with described photo-sensitive cell is arranged in a crossed manner with described drive signal line, every a line multiple
When described photo-sensitive cell is connected with drive signal line described in same, described in the touch-control stage, photo-sensitive cell is driving signal
Under the control of line, receive finger reflection light and include,
Described drive signal line input drive signal line by line, to drive described photo-sensitive cell to open line by line；
The described photo-sensitive cell opened receives finger reflection light.
13. control methods according to claim 12, it is characterised in that the described touch-control stage be positioned at adjacent two picture frames it
Between.
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