CN205656407U - Display device - Google Patents
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- CN205656407U CN205656407U CN201620518787.5U CN201620518787U CN205656407U CN 205656407 U CN205656407 U CN 205656407U CN 201620518787 U CN201620518787 U CN 201620518787U CN 205656407 U CN205656407 U CN 205656407U
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- pixel cell
- display device
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Abstract
The utility model provides a display device belongs to the fingerprint identification technology field, and it is complicated that it can solve present fingerprint identification in -process reflected light path, and the noise among the sensing signal is big, problem that the fingerprint identification precision is low. The utility model discloses display device includes: a pixel for going on show, a sensitization unit for being based on received light intensity production sensing signal, to the first base plate and the second base plate of box, wherein the second base plate is located display device's light -emitting side, during the second base plate is located to the sensitization unit, and one side of the first base plate of its orientation is equipped with the light shield layer.
Description
Technical field
This utility model belongs to fingerprint identification technology field, is specifically related to a kind of display device.
Background technology
Along with the development of technology, the display device such as a lot of mobile phones, panel computer starts to have
Fingerprint identification function.A kind of existing display device is as it is shown in figure 1, display panels
The incident side of 71 is externally provided with backlight 72, and display panels 71 includes to box
One substrate 51 (away from the substrate of light emission side) and second substrate 52 (near the substrate of light emission side),
Being provided with multiple photosensitive unit 1 in first substrate 51, photosensitive unit 1 is near backlight 72
Side be provided with light shield layer 11.When finger is by time on second substrate 52, liquid can be will transmit through
The luminous reflectance of LCD panel 71 returns each photosensitive unit 1, and the paddy 91 of fingerprint and ridge 92
Different to the reflection of light, therefore produce with the photosensitive unit 1 of paddy 91 and ridge 92 correspondence position
Induced signal (such as photoelectric current) also different, by the induced signal of relatively each photosensitive unit 1
I.e. can determine that its correspondence is paddy 91 or the ridge 92 of fingerprint, thus obtains the figure of fingerprint
Case, it is achieved fingerprint recognition.
But, a lot of structures in display device can cause reflection, thus causes display
Reflected light path actual in device is the most complicated；Such as, the light that backlight 72 sends may be
Not up to directly reflexed to, on photosensitive unit 1, be mapped to hands by second substrate 52 during finger
Refer to that the light of same position through the propagation of relatively long distance, can reflex to multiple different photosensitive
On unit 1.It is to say, the source of light that each photosensitive unit 1 receives is the most complicated,
It is difficult to determine which part is by corresponding fingerprint reflection the most on earth, therefore it produces
Induced signal in noise big, it is difficult to carry out accurate fingerprint recognition.
Utility model content
This utility model embodiment provides a kind of display device avoiding other to disturb.
Solve this utility model technical problem and be employed technical scheme comprise that a kind of display dress
Put, comprising:
For carrying out the pixel cell shown；
The photosensitive unit of induced signal is produced for the intensity according to the light received；
First substrate and second substrate to box, wherein second substrate is positioned at described display dress
The light emission side put；Described photosensitive unit is located in second substrate, and it is towards first substrate
Side be provided with light shield layer.
Preferably, each described photosensitive unit is corresponding with a pixel cell；Photosensitive list
Distance between unit and its corresponding pixel cell is than photosensitive unit and other any one pictures
Distance between element unit is the least.
It may further be preferable that each pixel cell is the most corresponding with a photosensitive unit.
Preferably, described display device is light emitting display device.
In display device of the present utility model, photosensitive unit is provided close to the second of light emission side
In substrate, thus reduce the distance between photosensitive unit and finger, reduce dissipating of light,
And make the light reflected by second substrate can not be mapped on photosensitive unit, thus make photosensitive list
The light source that unit receives is clearer and more definite, and in the induced signal of generation, noise is less, can be more
Realize fingerprint recognition accurately.
Accompanying drawing explanation
Fig. 1 is the cross-section structure signal of the existing display device with fingerprint identification function
Figure；
Fig. 2 is the cross-section structure signal of a kind of display device of embodiment of the present utility model
Figure；
Fig. 3 is the plan structure signal of a kind of display device of embodiment of the present utility model
Figure；
Fig. 4 is that a kind of display device of embodiment of the present utility model is in the of fingerprint recognition
The schematic top plan view in one stage；
Fig. 5 is that a kind of display device of embodiment of the present utility model is in the of fingerprint recognition
The schematic top plan view of two-stage；
Fig. 6 is that the another kind of display device of embodiment of the present utility model is in fingerprint recognition
The schematic top plan view of first stage；
Fig. 7 is that the another kind of display device of embodiment of the present utility model is in fingerprint recognition
The schematic top plan view of second stage；
Wherein, reference is: 1, photosensitive unit；11, light shield layer；51, the first base
Plate；52, second substrate；6, pixel cell；71, display panels；72, backlight
Unit；91, paddy；92, ridge.
Detailed description of the invention
For making those skilled in the art be more fully understood that the technical solution of the utility model, under
Face combines the drawings and specific embodiments and is described in further detail this utility model.
Embodiment 1:
As shown in Figures 2 to 7, the present embodiment provides a kind of display device, comprising:
For carrying out the pixel cell 6 shown；
The photosensitive unit 1 of induced signal is produced for the intensity according to the light received；
First substrate 51 and second substrate 52 to box, wherein second substrate 52 is positioned at aobvious
The light emission side of showing device；Photosensitive unit 1 is located in second substrate 52, and it is towards first
The side of substrate 51 is provided with light shield layer 11.
It is to say, the display device of the present embodiment includes multiple for carrying out showing
Pixel cell 6, this pixel cell 6 is the point that can individually show the most required content, is
" pixel "；Or, pixel cell 6 is also for can individually show a kind of face in each pixel
The point of color, i.e. " sub-pixel " or " sub-pix " are (with each pixel cell 6 for one in figure
Individual pixel, as a example by including three sub-pixels simultaneously).Meanwhile, display device also includes multiple
Photosensitive unit 1, photosensitive unit 1 can produce different senses according to the intensity being mapped to light thereon
Induction signal, it specifically can include light sensitive diode, phototriode, photoconductive resistance etc..
When finger is by time on the display apparatus, and the paddy 91 of fingerprint and ridge 92 can be to by pixel cells 6
The light generation sent reflection in various degree, thus corresponding fingerprint valley 91 and ridge 92 position
The light intensity that receives of photosensitive unit 1 different, the induced signal of generation is the most different.Again
With analytic unit (such as fingerprint recognition chip), induced signal is analyzed, can realize referring to
Stricture of vagina identification.
Generally the display floater of display device is all (if array base palte is with right by two substrates
Box substrate) box-like is become, wherein second substrate 52 (as to box substrate) is positioned at light emission side,
Photosensitive unit 1 is then located on first substrate 51 (such as array base palte).And in the present embodiment,
As in figure 2 it is shown, photosensitive unit 1 is located in second substrate 52 (is such as located close to the first base
Plate 51 side)；Owing to photosensitive unit 1 is arranged in the second substrate 52 of light emission side,
Therefore its light direct irradiation that can be sent by pixel cell 6 near first substrate 51 side, for
These shadows are avoided to ring fingerprint detection, therefore will be at photosensitive unit 1 towards first substrate 51
Side arranges light shield layer 11 (such as black matrix).
In the display device of the present embodiment, photosensitive unit 1 is provided close to the second of light emission side
In substrate 52, thus reduce the distance between photosensitive unit 1 and finger, reduce light
Dissipate, and make the light reflected by second substrate 52 can not be mapped on photosensitive unit 1, by
This light source making photosensitive unit 1 receive is clearer and more definite, noise in the induced signal of generation
Less, fingerprint recognition can be realized more accurately.
Preferably, each photosensitive unit 1 is corresponding with a pixel cell 6；Photosensitive unit
Distance between 1 and its corresponding pixel cell 6 than photosensitive unit 1 and other any one
Distance between pixel cell 6 is the least.
It is to say, as shown in Figure 2 and Figure 3, in the display device of the present embodiment, often
The all corresponding pixel cell 6 of individual photosensitive unit 1, photosensitive unit 1 and its corresponding picture
Element unit 6 between closest.Thus as in figure 2 it is shown, it is mapped to each photosensitive unit 1
On light, both mainly be from, in corresponding pixel cell 6, in other words, so can making
The light of pixel cell 6 injection has " directivity ", the specific photosensitive unit of main directive 1.
Therefore, the light source being mapped on photosensitive unit 1 is clearer and more definite, can realize fingerprint more accurately
Identify.
It is furthermore preferred that each pixel cell 6 is the most corresponding with a photosensitive unit 1.
It is to say, preferably occur without the corresponding same pixel cell of multiple photosensitive unit 1
The situation of 6, such that can ensure that the light that each pixel cell 6 sends the most only affects one
Individual photosensitive unit 1, and it is mapped to the light on each photosensitive 1 also respectively from different pixel lists
Unit 6, thus improve the accuracy of fingerprint recognition further.
Certainly, according to requirements above, can take between pixel cell 6 and photosensitive unit 1
The form of " one_to_one corresponding " shown in Fig. 2, Fig. 3.But, " each pixel cell 6
The most corresponding with a photosensitive unit 1 " do not represent pixel cell 6 and photosensitive unit 1
Inevitable one_to_one corresponding because the quantity of pixel cell 6 can ratio photosensitive unit more than 1, i.e.
Part can be had there is no the photosensitive unit 1 of correspondence.
Preferably, display device is light emitting display device.
Owing to, in light emitting display device, each sub-pixel being independent having
Optical diode is in luminescence, therefore the light-emitting zone of each of which pixel cell 6, direction etc. are more preferable
Control, be more conducive to realize this utility model.
Preferably, the display device of the present embodiment also includes:
Control unit, for when carrying out fingerprint recognition, makes partial pixel unit 6 luminous
And other pixel cells 6 are the most luminous；
Analytic unit, carries out fingerprint knowledge for the induced signal produced according to photosensitive unit 1
Not.
It is to say, when carrying out fingerprint recognition, the display device of the present embodiment is not
All pixel cells 6 carry out luminescence together, but only partial pixel unit 6 is luminous,
Other pixel cell 6 is the most luminous.Owing to only having partial pixel unit 6 when fingerprint recognition
Luminescence, therefore the light being mapped on each photosensitive unit 1 is obviously only possible to from current luminescence
Pixel cell 6, therefore its light path is fairly simple, it is easy to accurately judge the source of light, sensing
The signal to noise ratio of signal is high, can the accuracy height of fingerprint recognition further.
Wherein, above multiple photosensitive unit 6 can in the display floater of display device uniformly
Distribution, thus ensure that display device also has touch controllable function, since because photosensitive unit energy
Tell fingerprint, therefore it the most also can tell the position of finger.
Wherein, make pixel cell 6 luminous or non-luminous mode is various；Such as,
Make pixel cell 6 luminescence be equivalent to control its display and there is the content of certain brightness；And
Make that pixel cell 6 is the most luminous is also equivalent to make it to show the content of ater, or also
The signal supply to pixel cell 6 can be cut off so that it is be in idle state (corresponding normal
The display device of black pattern).
Certainly, above is luminous and the most luminous only for the fingerprint recognition stage, and in display
In the stage, each pixel cell 6 will be according to the content normal luminous that should show, although this
Time to be likely to partial pixel unit 6 the most luminous, but refer to not according to induced signal
Stricture of vagina identification.And the set-up mode in fingerprint recognition stage is various, such as, can be and show
The real stage occurs the most in turn, or also running certain procedures or can carry out one
After fixed operation, just enter back into the fingerprint recognition stage.
The light emitting diode mentioned in above-described embodiment can be OLED (organic light emission two
Pole is managed) or QLED (light emitting diode with quantum dots), this light emitting diode constitutes picture
Element unit, is used for showing image.When carrying out fingerprint recognition, this light emitting diode is permissible
There is provided and irradiate light.
The present embodiment also provides for the fingerprint identification method of a kind of display device, and it is suitable for
Display device (display device described above) includes multiple for carrying out the pixel cell shown
6, and multiple photosensitive unit producing induced signal for the intensity according to the light received
1。
Concrete, the fingerprint identification method of the present embodiment includes: make partial pixel unit 6
Luminous and other pixel cells 6 are the most luminous, and the sensing letter produced according to photosensitive unit 1
Number carry out fingerprint recognition.
The fingerprint identification method of the present embodiment is in the situation of only partial pixel unit 6 luminescence
Lower collection induced signal, and the light being mapped on each photosensitive unit 1 is only from current luminescence
Pixel cell 6, therefore its light path is fairly simple, it is easy to be accurately judged to the source of light, sense
Noise in induction signal is little, and the accuracy of fingerprint recognition is high.
Preferably, the fingerprint identification method of the present embodiment includes n stage, and wherein n is
Integer more than or equal to 2；More than make partial pixel unit 6 luminous and other pixel cells 6
The most luminous specifically include: make a class pixel cell 6 luminous in each stage and other pixels
Unit 6 is the most luminous, and in any two benches, the pixel cell 6 of luminescence is incomplete same.
It is to say, in the fingerprint identification method of the present embodiment, it may include multiple " parts
Pixel cell 6 is luminous " step (the most multiple stage), there is partial pixel in each stage
Unit 6 is luminous, and pixel cell 6 difference luminous in each stage, and finally passes through again
Induced signal in each stage comprehensively draws fingerprint pattern.
According to which, in each stage, the illumination mode of display device is different, therefore can examine
The induced signal that at survey, the most each photosensitive unit 6 produces, judges more accurately
The reflection case of fingerprint, it is achieved the fingerprint recognition of higher precision.
It is furthermore preferred that pixel cell 6 is divided into n class；More than make partial pixel unit 6
Light and other pixel cell 6 is the most luminous specifically includes: each stage makes a class pixel list
Unit 6 is luminous and other class pixel cells 6 are the most luminous, and every class picture in n stage
Element unit 6 all luminescences are once.
It is to say, whole pixel cells 6 can be divided into many groups, the often pixel list in group
Unit 6 constitutes specific " pattern "；And in fingerprint identification process, each group pixel cell 6
Luminous in turn, often group pixel cell 6 all luminescences once and only luminescence is once.Thus, exist
Whole fingerprint identification process, the inevitable luminous mistake of each pixel cell 6, thus corresponding each
The fingerprint of pixel cell 6 position all can be detected, and its induction information collected is the most complete
Full, fingerprint recognition the most accurately can be realized.
Preferably, for each pixel cell 6, in the pixel cell 6 being adjacent extremely
A rare pixel cell 6 being to be different from class.
Obviously, when pixel cell 6 is classified, if certain class pixel cell 6 covers
A sheet of continuous print region, then it has little significance to improving identification accuracy, because
The light that each pixel cell 6 sends mainly can have influence on its neighbouring region, therefore according to
With upper type, the light of the reception of the photosensitive unit 1 in large stretch of continuous print region still can
From whole pixel cells 6 about, do not have the effect simplifying light path.To this end, not
Similar pixel cell 6 should be to try to that " interval " or " intersection " arranged, specifically
Say, it is simply that multiple pixel cells adjacent with any one pixel cell 66 are (such as edge respectively
Line direction and column direction are positioned at four pixel cells 6 of these pixel cell 6 both sides) can not be complete
Portion is similar with it, and should partly be different from class.
It is further preferred that n is 2, pixel cell 6 is divided into first kind pixel cell 6 He
Equations of The Second Kind pixel cell 6.
It is to say, from the point of view of simplicity, whole pixel cells 6 are divided into two classes i.e.
Can, and fingerprint identification process also can be divided into two stages accordingly, two class pixel cells 6
Luminescence respectively in two stages.
Further, each pixel cell 6 lines up array.Wherein, as the present embodiment
A kind of mode, in the pixel cell 6 of any biphase adjacent rows, a behavior first kind pixel
Unit 6, another behavior Equations of The Second Kind pixel cell 6.
It is to say, above two class pixel cells 6 can be interlacing distribution, Qi Zhongyi
Class is the pixel cell 6 of odd-numbered line, the another kind of pixel cell 6 for even number line.At fingerprint
During identification, as shown in Figure 4, Figure 5, first stage odd-line pixels unit 6 before this
Luminescence, second stage is then that the pixel cell 6 of even number line is luminous.Certainly, above
Two stages are relative, if therefore before this pixel cell 6 of even number line luminous, the most again
It is the luminescence of the pixel cell 6 of odd-numbered line, is also feasible.
Or, as the another way of the present embodiment, in the pixel of any biphase adjacent column
In unit 6, one is classified as first kind pixel cell 6, and another is classified as Equations of The Second Kind pixel cell 6.
It is to say, above two class pixel cells 6 can also be every column distribution, wherein
One class is the pixel cell 6 of odd column, the another kind of pixel cell 6 for even column.Due to
Illumination mode in its fingerprint identification process is similar when arranging with interlacing, therefore the most detailed at this
Thin description.
Or, as the another way of the present embodiment, in often row pixel cell 6,
First kind pixel cell 6 and Equations of The Second Kind pixel cell 6 are arranged in turn；At each column pixel list
In unit 6, first kind pixel cell 6 and Equations of The Second Kind pixel cell 6 are arranged in turn.
It is to say, above two class pixel cells 6 can also be according to " gridiron pattern "
Form is spaced apart, and it is black that one type pixel cell 6 is positioned at corresponding chessboard
The position of lattice, another kind of pixel cell 6 is positioned at the position of corresponding chessboard BAIGE.
In fingerprint identification process, as shown in Figure 6, Figure 7, a first stage class pixel list before this
The luminescence of unit 6, second stage is then that another kind of pixel cell 6 is luminous.
Certainly, the mode classification (pattern in other words) that above pixel cell 6 is concrete is various
, describe in detail the most one by one at this.
It is understood that embodiment of above is merely to illustrate that of the present utility model
Principle and the illustrative embodiments that uses, but this utility model is not limited thereto.
For those skilled in the art, without departing from spirit of the present utility model
In the case of essence, can make various modification and improvement, these modification and improvement are also
It is considered as protection domain of the present utility model.
Claims (4)
1. a display device, it is characterised in that including:
For carrying out the pixel cell shown；
The photosensitive unit of induced signal is produced for the intensity according to the light received；
First substrate and second substrate to box, wherein second substrate is positioned at described display dress
The light emission side put；Described photosensitive unit is located in second substrate, and it is towards first substrate
Side be provided with light shield layer.
Display device the most according to claim 1, it is characterised in that
Each described photosensitive unit is corresponding with a pixel cell；Photosensitive unit is right with its institute
Distance between the pixel cell answered is than between photosensitive unit and other any one pixel cells
Distance is the least.
Display device the most according to claim 2, it is characterised in that
Each pixel cell is the most corresponding with a photosensitive unit.
Display device the most according to claim 1, it is characterised in that
Described display device is light emitting display device.
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| CN201620518787.5U CN205656407U (en) | 2016-05-31 | 2016-05-31 | Display device |
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|---|---|---|---|
| CN201620518787.5U CN205656407U (en) | 2016-05-31 | 2016-05-31 | Display device |
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| CN106022292A (en) * | 2016-05-31 | 2016-10-12 | 京东方科技集团股份有限公司 | Display device and fingerprint identification method thereof |
| CN107452283A (en) * | 2017-08-07 | 2017-12-08 | 京东方科技集团股份有限公司 | Display module and its manufacture method, display device |
| CN107958178A (en) * | 2017-04-22 | 2018-04-24 | 深圳信炜科技有限公司 | Photoelectric sensing module and preparation method thereof, electronic device |
| WO2018145378A1 (en) * | 2017-02-09 | 2018-08-16 | 上海箩箕技术有限公司 | Optical fingerprint sensor module |
| WO2018145379A1 (en) * | 2017-02-09 | 2018-08-16 | 上海箩箕技术有限公司 | Display module |
| WO2018209672A1 (en) * | 2017-05-19 | 2018-11-22 | 上海箩箕技术有限公司 | Display module |
| CN108897178A (en) * | 2018-08-31 | 2018-11-27 | 武汉华星光电技术有限公司 | Colored filter substrate and display panel |
| WO2019033346A1 (en) * | 2017-08-17 | 2019-02-21 | 深圳信炜科技有限公司 | Display module and biological feature information sensing method therefor, and electronic device |
| CN109375412A (en) * | 2018-11-30 | 2019-02-22 | 武汉华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display device |
| US10325967B2 (en) | 2017-04-27 | 2019-06-18 | Shaighai Tianma Micro-Electronics Co., Ltd. | Organic light emitting display panel, driving method thereof and organic light emitting display apparatus |
| CN111312793A (en) * | 2020-03-31 | 2020-06-19 | 联想(北京)有限公司 | Electronic equipment |
| TWI784212B (en) * | 2018-11-13 | 2022-11-21 | 大陸商上海耕岩智能科技有限公司 | A topological structure light source driving method, storage medium and electronic equipment applied to under-screen image imaging |
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| CN106022292A (en) * | 2016-05-31 | 2016-10-12 | 京东方科技集团股份有限公司 | Display device and fingerprint identification method thereof |
| WO2017206558A1 (en) * | 2016-05-31 | 2017-12-07 | 京东方科技集团股份有限公司 | Display device and fingerprint identification method thereof |
| US10496867B2 (en) | 2016-05-31 | 2019-12-03 | Boe Technology Group Co., Ltd. | Display device and fingerprint identification method |
| WO2018145378A1 (en) * | 2017-02-09 | 2018-08-16 | 上海箩箕技术有限公司 | Optical fingerprint sensor module |
| WO2018145379A1 (en) * | 2017-02-09 | 2018-08-16 | 上海箩箕技术有限公司 | Display module |
| US10482310B2 (en) | 2017-02-09 | 2019-11-19 | Shanghai Oxi Technology Co., Ltd | Display module |
| US10331935B2 (en) | 2017-02-09 | 2019-06-25 | Shanghai Oxi Technology Co., Ltd | Optical fingerprint module |
| CN107958178A (en) * | 2017-04-22 | 2018-04-24 | 深圳信炜科技有限公司 | Photoelectric sensing module and preparation method thereof, electronic device |
| US10325967B2 (en) | 2017-04-27 | 2019-06-18 | Shaighai Tianma Micro-Electronics Co., Ltd. | Organic light emitting display panel, driving method thereof and organic light emitting display apparatus |
| WO2018209672A1 (en) * | 2017-05-19 | 2018-11-22 | 上海箩箕技术有限公司 | Display module |
| CN107452283A (en) * | 2017-08-07 | 2017-12-08 | 京东方科技集团股份有限公司 | Display module and its manufacture method, display device |
| US10817089B2 (en) | 2017-08-07 | 2020-10-27 | Boe Technology Group Co., Ltd. | Display component and method for manufacturing the same, display device |
| WO2019033346A1 (en) * | 2017-08-17 | 2019-02-21 | 深圳信炜科技有限公司 | Display module and biological feature information sensing method therefor, and electronic device |
| CN108897178A (en) * | 2018-08-31 | 2018-11-27 | 武汉华星光电技术有限公司 | Colored filter substrate and display panel |
| WO2020042231A1 (en) * | 2018-08-31 | 2020-03-05 | 武汉华星光电技术有限公司 | Color filter substrate and display panel |
| TWI784212B (en) * | 2018-11-13 | 2022-11-21 | 大陸商上海耕岩智能科技有限公司 | A topological structure light source driving method, storage medium and electronic equipment applied to under-screen image imaging |
| CN109375412A (en) * | 2018-11-30 | 2019-02-22 | 武汉华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display device |
| WO2020107677A1 (en) * | 2018-11-30 | 2020-06-04 | 武汉华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display device |
| US11366350B2 (en) | 2018-11-30 | 2022-06-21 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Liquid crystal display panel and liquid crystal display device |
| CN111312793A (en) * | 2020-03-31 | 2020-06-19 | 联想(北京)有限公司 | Electronic equipment |
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