CN208737429U - A kind of touching display screen with fingerprint identification device - Google Patents
A kind of touching display screen with fingerprint identification device Download PDFInfo
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- CN208737429U CN208737429U CN201821409467.1U CN201821409467U CN208737429U CN 208737429 U CN208737429 U CN 208737429U CN 201821409467 U CN201821409467 U CN 201821409467U CN 208737429 U CN208737429 U CN 208737429U
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Abstract
The application provides a kind of touching display screen with fingerprint identification device, it is characterized in that, the touching display screen is liquid crystal display, the liquid crystal display includes the fingerprint sensing unit being integrated in the tft layer of liquid crystal display and control circuit, wherein, the fingerprint sensing unit is used to collect the light into touching display screen, and the light being collected into is converted to electric signal；Wherein, the light is the reflection light generated after screen light source is blocked by fingerprint；The control circuit is used to that the electric signal that fingerprint sensing unit generates to be converted to picture signal according to matching algorithm, generates fingerprint image.Fingerprint identification region can be integrated into below the display area of touching display screen by the application, and not need to add individual fingerprint identification module, improved the integrated level of equipment, reduced production and design cost.
Description
Technical field
This application involves technical field of touch-control display more particularly to a kind of touching display screens with fingerprint identification device.
Background technique
With the universal of mobile payment and development, fingerprint recognition has been increasingly becoming important close of one of mobile payment
Code verification mode.Therefore, for existing mobile device, especially mobile phone, fingerprint identification device is a kind of indispensable
With the component of substitution.How the position of fingerprint identification device at the terminal is set to further increase the convenience used, it is excellent
Changing user experience becomes several important one of the problems to be considered when designing mobile phone.
Currently, the fingerprint identification device of most of mobile devices is all mounted on the non-display area of mobile device, such as show
On the back side of screen or the non-display area of display side.It can be further it will be apparent that fingerprint recognition is integrated into display area
Optimize user experience, however this is difficult to realize at this stage.This is because, the prior art has the following deficiencies:
1, the cabling of the sensor panel of fingerprint recognition can not be from being connected to controller between touch sensing.
2, fingerprint Identification sensor increases the load of touch sensing, influences touch function.
3, fingerprint Identification sensor requires technique high, and the technique of touch sensing does not reach requirement also at present.
4, the addition of fingerprint sensor can reduce the light transmittance of display, influence display effect.
Apply for content
To solve the above problems, this application provides a kind of fingerprint identification device and with the touching display screen of the device,
Fingerprint identification region can be integrated into below the display area of touching display screen, and not need to add individual fingerprint recognition mould
Block improves the integrated level of equipment, fundamentally solves the above problem.
Specifically, technical solution provided by the present application is as follows:
A kind of touching display screen with fingerprint identification device, which is characterized in that the touching display screen is liquid crystal display
Screen, the liquid crystal display include the fingerprint sensing unit being integrated in the tft layer of liquid crystal display and control electricity
Road, wherein
The fingerprint sensing unit is used to collect the light into touching display screen, and the light being collected into is converted to electricity
Signal；Wherein, the light is the reflection light generated after screen light source is blocked by fingerprint；
The control circuit is used to that the electric signal that fingerprint sensing unit generates to be converted to picture signal according to matching algorithm,
Generate fingerprint image.
According to one of embodiment of the application, wherein the colorful optical filter array of the liquid crystal display includes red
Color pixel unit, green pixel cell, blue pixel cells and transparent pixels unit, the wherein shape of transparent pixels unit and face
Product is identical as the one of which in other pixel units.
According to one of embodiment of the application, wherein the transparent pixels unit in the colorful optical filter array exists
Projection perpendicular to the direction of the display screen is at least partly overlapped with the fingerprint sensing unit.
According to one of embodiment of the application, wherein the transparent pixels unit in the colorful optical filter array exists
The fingerprint sensing unit is completely covered in projection perpendicular to the direction of the display screen, and being at least for the projected area is described
Twice of fingerprint sensing unit area.
According to one of embodiment of the application, wherein the fingerprint sensing unit includes photosensitive material layer, the sense
Optical material layer can identify the light of fingerprint depressed area reflection and the light of fingerprint convex area reflection, and be converted into different
Current signal.
According to one of embodiment of the application, wherein the liquid crystal display further includes being integrated in liquid crystal display
Tft layer in light focusing unit, the light focusing unit is located above the fingerprint sensing unit, for touching to entering
The light of control display screen carries out convergence enhancing.
Correspondingly, present invention also provides another touching display screens with fingerprint identification device, which is characterized in that institute
Stating touching display screen is organic self light emitting display panel, and organic self light emitting display panel includes upper electrode, light emitting layer, lower layer
Electrode, the fingerprint sensing unit being fitted in below the lower electrode and control circuit, wherein
The fingerprint sensing unit is used to collect the light into touching display screen, and the light being collected into is converted to electricity
Signal；Wherein, the light is the reflection light generated after screen light source is blocked by fingerprint；
The control circuit is used to that the electric signal that fingerprint sensing unit generates to be converted to picture signal according to matching algorithm,
Generate fingerprint image.
According to one of embodiment of the application, wherein the light emitting layer of organic self light emitting display panel includes coloured silk
Color Filter Array, the colorful optical filter array include red pixel cell, green pixel cell and blue pixel cells,
In, the spacing between adjacent pixel unit is no more than 10 μm.
According to one of embodiment of the application, wherein two adjacent pixel units in the colorful optical filter array
Gap the direction perpendicular to the display screen projection be located at the fingerprint sensing unit geometric center.
According to one of embodiment of the application, wherein the touching display screen further includes positioned at lower electrode and referring to
Light focusing unit between line sensing unit, for carrying out convergence enhancing to the light for entering touching display screen.
The application's has the beneficial effect that
Using the method for independent fingerprint identification module in compared with the prior art, the application integrates fingerprint identification device
In the tft layer below the liquid crystal layer of touching display screen, do not need additional cabling and can be realized to fill fingerprint recognition
The connection with controller is set, integrated level is significantly improved, reduces production process, reduces production and design cost.Compared to
Existing pressure-sensitive fingerprint identification device, the fingerprint identification device in the application are realized fingerprint recognition by illuminant module, are not necessarily to
Additional inductive load is introduced, the influence to touch function is avoided.In addition, fingerprint identification device being integrated in the application
It is a kind of highly developed technology in the art, simple process and low cost in transistor layer below liquid crystal layer.Therefore, originally
The fingerprint identification device of application can on existing Process ba- sis scale of mass production, realize fingerprint recognition on the mobile apparatus
The module integrated target to display area, greatly the user experience is improved.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of embodiment or technical solution in the prior art
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only some of application
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the exemplary structure schematic diagram of the fingerprint identification device in one embodiment in the application；
Fig. 2 is the principle explanatory diagram of the fingerprint identification device in one embodiment in the application；
Fig. 3 is a kind of concrete structure schematic diagram of the fingerprint identification device in one embodiment in the application；
Fig. 4 is touching display screen one of of the fingerprint identification device in Fig. 3 in one embodiment in the application
Possible position view；
Fig. 5 is that the fingerprint identification device in one embodiment in the application is another in the touching display screen in Fig. 3
The possible position view of kind；
Fig. 6 is the exemplary structure schematic diagram of the fingerprint identification device in another embodiment in the application.
Specific embodiment
The explanation of following embodiment is referred to the additional illustration, the particular implementation that can be used to implement to illustrate the application
Example.The direction term that the application is previously mentioned, such as [on], [under], [preceding], [rear], [left side], [right side], [interior], [outer], [side]
Deng being only the direction with reference to annexed drawings.Therefore, the direction term used be to illustrate and understand the application, rather than to
Limit the application.The similar unit of structure is with being given the same reference numerals in the figure.
Term used herein above is not intended to limit exemplary embodiment just for the sake of description specific embodiment.Unless
Context clearly refers else, otherwise singular used herein above "one", " one " also attempt to include plural number.Also answer
When understanding, term " includes " and/or "comprising" used herein above provide stated feature, integer, step, operation,
The presence of unit and/or component, and do not preclude the presence or addition of other one or more features, integer, step, operation, unit,
Component and/or combination thereof.
Embodiments herein is described in detail below in conjunction with attached drawing.
This application provides a kind of touching display screens with fingerprint identification device, wherein the touching display screen is liquid
Crystal display screen, the liquid crystal display include the fingerprint sensing unit being integrated in the tft layer of liquid crystal display and control
Circuit processed, wherein the fingerprint sensing unit is used to collect the light into touching display screen, and the light being collected into is converted
For electric signal；Wherein, the light is the reflection light generated after screen light source is blocked by fingerprint；The control circuit is used for root
The electric signal that fingerprint sensing unit generates is converted into picture signal according to matching algorithm, generates fingerprint image.
The touching display screen with fingerprint identification device in the embodiment one in the application is shown with reference to Fig. 1, Fig. 1 to show
Example property structural schematic diagram, wherein the fingerprint identification device is located at below the display area of touching display screen, specifically, described
Fingerprint sensing unit includes concentration module 110 and induction module 120, and the concentration module 110 is optical lens, for entrance
The light of fingerprint sensing unit carries out convergence enhancing.The induction module 120 is photosensitive material layer, for believing enhanced light
Number it is converted into electric signal.The application of optical lens and photosensitive material layer belongs to technology highly developed in this field, herein not
It repeats again.
Since the application has abandoned the fingerprint identification method of pressure-sensitive completely, identification fingerprint is only relied on to the anti-of screen inner light source
It penetrates and fingerprint recognition can be realized, without introducing additional inductive load, the touch function of screen will not be had an impact.Therefore,
Fingerprint identification device in the application overcomes the limitation of area, can be distributed in a part therein of display screen, can also
With the region below entire display screen.It can arbitrarily be arranged according to mobile device and the demand of software in the application.
For example, no matter which region user places a finger on, can when setting entire screen is all fingerprint identification area
It realizes fingerprint identification function, greatly optimizes user experience.In addition, in the latter case, double finger-print ciphers can also be arranged
Or more finger-print ciphers or even palmmprint password, i.e., simultaneously the two or more fingerprints of typing user or palmmprint as a whole into
Row identification, compared to single fingerprint, substantially increases the safety of password.
Preferably, the fingerprint identification device further includes control unit, for the starting when receiving fingerprint recognition instruction
Otherwise the fingerprint identification device closes the fingerprint identification device.Control unit can be such that fingerprint identification device is only needing
Start when fingerprint recognition, for example, starting in typing fingerprint or verifying password.And in general touch control operation Shi Buqi
It is dynamic, such as do not start in the touch control operation for the non-authentication class such as typewrited, selected using finger, to significantly reduce and be
System power consumption.
Fig. 2 shows the principle explanatory diagrams of the fingerprint identification device in the embodiment in the application.With reference to Fig. 2, currently, touching
The display surface for controlling display screen is usually the high specular material of light transmittance, has extremely strong reflecting effect to light.Due in screen
The intensity of light source is very high, and the distance apart from display screen is very close (being less than 0.2cm), therefore can penetrate display screen easily.And it is outer
Light source in boundary's environment, there are (several meters or more or farther) at a distance from far, reaches light when display screen usually between display screen
Line intensity is extremely faint, can not pass through display screen but can be reflected back by specular material.I.e. under normal circumstances, ambient light
Source can not reach below display screen.It is on the other side, in the case that screen inner light source is unobstructed outside display screen, can directly it wear
Saturating screen reaches the retina of user.
When user is by display screen on finger plaster, since light can not penetrate finger, light can be reflected in most of screen
Echo display screen.Reflection light intensity at this time is high, and the distance apart from screen is minimum, can be ignored, therefore the reflected light
Line can pass through screen and reach below screen, as shown in Figure 2.The light being reflected back toward is collected simultaneously via fingerprint sensing unit
It is converted into being transmitted to control unit after electric signal.Since fingerprint lug boss is different with the shape of recessed portion, to the anti-of light
Rule also difference is penetrated, thus the corresponding electric signal that fingerprint sensing unit generates is also different.Control circuit passes through to different electricity
Signal is handled, and fingerprint image can be restored, and realizes fingerprint recognition.The realization of control circuit has been developed in this field
Mature technology, those skilled in the art easily can build corresponding functional circuit according to the algorithm of control circuit,
Details are not described herein for details.
Preferably, in one embodiment of the application, the liquid crystal display includes colorful optical filter array 160, color
Color Filter Array 160 is made of redgreenblue pixel 150 according to certain aligned transfer.Liquid crystal display further includes film
Transistor array 130 and back light 140.Light focusing unit 110 is located at 130 top of thin film transistor (TFT) array, and liquid crystal layer is located at coloured silk
(not shown) between Color Filter Array 160 and light focusing unit 110.In the present embodiment, the fingerprint sensing unit and
Control circuit can be located in the thin film transistor (TFT) array 130 of the liquid crystal display, be incorporated to liquid crystal display in an integrated fashion
In the control circuit of screen.Therefore the application, which does not need additional cabling, can be realized company by fingerprint identification device and controller
It connects, significantly improves integrated level, reduce production process, reduce production and design cost.
The application is further described below in conjunction with Fig. 3.Specifically, Fig. 3 is the fingerprint being integrated in the application
The part-structure sectional view of the tft layer of the liquid crystal display of identification device.Wherein, 310 be the first insulating layer, at this
In embodiment, insulating layer 310 can for insulation collector lens, i.e., the light focusing unit of the described fingerprint identification device, can into
The light for entering touching display screen carries out convergence enhancing.320 be second insulating layer, between sensing unit 380 formed electricity every
From area.Wherein, the sensing unit 380 includes photosensitive material layer, and the photosensitive material layer can identify that fingerprint depressed area is reflected
Light and the reflection of fingerprint convex area light, and be converted into different current signals.381 layers are metal electrode, are used for
Stable operating voltage is provided for sensing unit 380, sensing unit 380 is photosensitive material layer.It is reflected when shielding interior light by fingerprint
It after echoing display screen inside, is irradiated to after collector lens converges on sensing unit 380, the sensing unit 380 is in illumination
Excitation is lower to generate electric current, forms electric signal, the control circuit of lower layer is passed to by the metal layer 382 of lower section, control circuit is logical
It crosses and the electric signal received is handled and restored, fingerprint recognition can be realized.
The control circuit being integrated in tft layer is further described below.As shown in figure 3, metal-oxide-semiconductor knot
Structure 384 is located at 382 lower section of metal layer, wherein the area N+ is source-drain area, and the area G is gate electrode, and the area Poly is channel region, and 330 be flat
Smooth layer, 340 be interlayer dielectric layer, and 350I is insulating layer, and 360 be buffer layer, and 370 be screen light source.Electricity in sensing unit 380
Signal is connected to the source-drain area of metal-oxide-semiconductor by metal layer 382, realizes the input of signal.
Fig. 3 only schematically illustrates the structure being integrated into fingerprint identification device in thin film transistor (TFT), in practice
The arrangement of transistor is complicated more than Fig. 3 fine.Specific integrated technique is the mature technology in this field, the skill in this field
Art personnel can be designed specific circuit according to the demand of the application, and details are not described herein.
Preferably, in the present embodiment, the colorful optical filter array of the liquid crystal display include red pixel cell, it is green
Color pixel unit, blue pixel cells and transparent pixels unit, the wherein shape of transparent pixels unit and area and other pixels
One of which in unit is identical, and the transparent pixels unit in the colorful optical filter array is perpendicular to the display screen
The projection in direction is at least partly overlapped with the fingerprint sensing unit.
Specifically, with reference to Fig. 1, wherein the size of the fingerprint sensing unit of the fingerprint identification device is not more than the coloured silk
Minimum pixel unit in colo(u)r filter matrix, in the colored filter matrix, rgb pixels are according to certain rule
It is arranged successively using three pixels as circulating unit, wherein have a transparent filter between each circulating unit.In order not to shadow
The whole arrangement of filter matrix is rung, the shape and area of the transparent filter are equal with the minimum pixel unit in matrix.
In other embodiments, the area of the transparent filter, which can according to need, is configured, the size of the transparent filter
It should not be construed as the limitation to the application with shape.
Referring to fig. 4, Fig. 4 shows the position of sensor and rgb pixels point in the touching display screen in Fig. 1 and big
Small relationship.Wherein, F represents the fingerprint sensing unit of the fingerprint identification device, and G, R, B respectively represent green, red, blue three pixels.
In figure, green, red, blue three pixels and transparent filter are arranged successively, the size of the transparent filter and minimum pixel unit
Size is identical.The size of the fingerprint sensing unit of the fingerprint identification device is identical with the size of minimum pixel unit, position
It is overlapped on the direction perpendicular to the display surface with the transparent filter, thus in shielding after being reflected by fingerprint of light
Reflection light can be received by transparent filter by fingerprint sensing unit.
Fig. 4, which is only exemplary, shows possible location and shape between a kind of transparent filter and fingerprint sensing unit
The reception of reflection light can be realized as long as the two partially overlaps on the direction perpendicular to the display surface in relationship.
Therefore, the location and shape of transparent filter and fingerprint sensing unit cannot be construed to the limitation to the application.
Preferably, throwing of the transparent pixels unit in the colorful optical filter array in the direction perpendicular to the display screen
The fingerprint sensing unit, twice for being at least the fingerprint sensing unit area of the projected area is completely covered in shadow.?
In another embodiment of the application, the area of the transparent filter is greater than the area of the fingerprint sensing unit.Referring to figure
5, wherein the area of fingerprint sensing unit is the half of the area of the transparent filter.In practice, since fingerprint incudes list
Member is lighttight, is declined to a great extent if being applied to according to the scheme in Fig. 4 and will lead to the light transmittance of display in practice.And
Design scheme in Fig. 5 is then directed to this case and the structure of the fingerprint identification device is optimized, specifically, reducing
The area of the fingerprint sensing unit, as shown in figure 5, occurring on the direction perpendicular to the display surface not by fingerprint
The transmission region W that sensing unit blocks, compared to Fig. 4, the light transmittance of the display screen in the present embodiment is greatly improved.
Compared to existing pressure-sensitive fingerprint identification device, the fingerprint identification device in the application is realized by illuminant module
Fingerprint recognition will not influence the touch function of display screen without introducing additional inductive load.In addition, will refer in the application
It is a kind of highly developed technology in the art, technique letter that line identification device, which is integrated in the transistor layer below liquid crystal layer,
It is single, it is at low cost.Therefore, the fingerprint identification device of the application can on existing Process ba- sis scale of mass production, realize and moving
Fingerprint identification module is integrated into the target of display area, greatly the user experience is improved in dynamic equipment.
The application in one embodiment, the touching display screen be organic self light emitting display panel (OLED),
In, organic self light emitting display panel includes upper electrode, light emitting layer, lower electrode, is fitted in below the lower electrode
Fingerprint sensing unit and control circuit, wherein the fingerprint sensing unit be used for collects enter touching display screen light, and
The light being collected into is converted into electric signal；Wherein, the light is the reflection light generated after screen light source is blocked by fingerprint；
The control circuit is used to that the electric signal that fingerprint sensing unit generates to be converted to picture signal according to matching algorithm, generates fingerprint
Image.The touching display screen further includes the light focusing unit between lower electrode and fingerprint sensing unit, for entrance
The light of touching display screen carries out convergence enhancing.
Specifically, Fig. 6 shows application of the fingerprint identification device in the application in OLED screen referring to Fig. 6.It is described
OLED screen includes: upper electrode 610, light emitting layer 620 and lower electrode 630.Wherein, upper electrode 610 and lower electrode
630 are made of transparent conductive material.Fingerprint identification device in the application is configured in the back of lower electrode 630, that is, shows
Shield the back side of display surface.Specifically, the light focusing unit 640 of the fingerprint identification device is close to lower electrode 630, sensing unit 650
Positioned at 640 lower section of light focusing unit.
Preferably, the light emitting layer of organic self light emitting display panel includes colorful optical filter array, the colorized optical filtering
Chip arrays include red pixel cell, green pixel cell and blue pixel cells, wherein the spacing between adjacent pixel unit
No more than 10 μm.The gap of two adjacent pixel units is in the direction perpendicular to the display screen in the colorful optical filter array
Projection be located at the fingerprint sensing unit geometric center.
In the present embodiment, the light emitting layer 630 is arranged successively by multiple minimum pixel units and is formed, the pixel list
Member may include green, red, blue three kinds of pixel units.In the application, there are certain gaps between each pixel unit, shield interior light
After line is reflected by fingerprint, it can be irradiated on the fingerprint identification device by the gap between pixel unit.Therefore, referring to Fig. 6,
The gap between luminescence unit in the position of the fingerprint identification device sensing unit 650 and organic self light emitting display panel
Direction along normal to screen is corresponding.Since the diameter in the gap is very small, according to existing technique, which is no more than
10 μm, usually 2~3 μm or so.Therefore, reflection light is when passing through the gap, it may occur that diffraction phenomena, in fingerprint recognition
A biggish hot spot is formed on the sensing unit 650 of device, completes the reception to reflection light, and then complete fingerprint recognition.
The application has abandoned pressure-sensitive fingerprint identification method in the prior art completely, using complete optical sensor method
Realize fingerprint recognition.Compared with the prior art, the application has the beneficial effect that
1, fingerprint identification device is integrated in the tft layer below the liquid crystal layer of touching display screen by the application, no
It needs additional cabling that the connection by fingerprint identification device and controller can be realized, significantly improves integrated level, reduce life
Production and design cost.
2, the fingerprint identification device in the application realizes fingerprint recognition by illuminant module, negative without introducing additional induction
It carries, avoids the influence to touch function, optimize the performance of touching display screen.
3, the method in the transistor layer below liquid crystal layer that is integrated in fingerprint identification device in the application is a kind of at this
Highly developed technology in field, simple process and low cost, can on existing Process ba- sis scale of mass production.
4, it is designed and optimizes by the shape of the sensing unit to the fingerprint identification device, can not influence to show
The case where display screen light transmittance, realizes fingerprint recognition, realizes and fingerprint identification module is integrated into display area on the mobile apparatus
Target, greatly the user experience is improved.
Although above preferred embodiment is not to limit in conclusion the application is disclosed above with preferred embodiment
The application processed, those skilled in the art are not departing from spirit and scope, can make various changes and profit
Decorations, therefore the protection scope of the application subjects to the scope of the claims.
It is obvious to a person skilled in the art that the application is not limited to the details of above-mentioned exemplary embodiment, Er Qie
In the case where without departing substantially from spirit herein or essential characteristic, the application can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and scope of the present application is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included in the application.Any reference signs in the claims should not be construed as limiting the involved claims.This
Outside, it is clear that one word of " comprising " does not exclude other units or steps, and odd number is not excluded for plural number.That states in system claims is multiple
Unit or device can also be implemented through software or hardware by a unit or device.The first, the second equal words are used to table
Show title, and does not indicate any particular order.
Claims (10)
1. a kind of touching display screen with fingerprint identification device, which is characterized in that the touching display screen is liquid crystal display,
The liquid crystal display includes the fingerprint sensing unit being integrated in the tft layer of liquid crystal display and control circuit,
In,
The fingerprint sensing unit is used to collect the light into touching display screen, and the light being collected into is converted to telecommunications
Number；Wherein, the light is the reflection light generated after screen light source is blocked by fingerprint；
The control circuit is used to that the electric signal that fingerprint sensing unit generates to be converted to picture signal according to matching algorithm, generates
Fingerprint image.
2. touching display screen according to claim 1, which is characterized in that the colorful optical filter array of the liquid crystal display
Including red pixel cell, green pixel cell, blue pixel cells and transparent pixels unit, the wherein shape of transparent pixels unit
Shape and area are identical as the one of which in other pixel units.
3. touching display screen according to claim 2, which is characterized in that the transparent pixels in the colorful optical filter array
Projection of the unit in the direction perpendicular to the display screen is at least partly overlapped with the fingerprint sensing unit.
4. touching display screen according to claim 3, which is characterized in that the transparent pixels in the colorful optical filter array
The fingerprint sensing unit is completely covered in projection of the unit in the direction perpendicular to the display screen, and the projected area is at least
It is twice of the fingerprint sensing unit area.
5. touching display screen according to claim 1, which is characterized in that the fingerprint sensing unit includes photosensitive material
Layer, the photosensitive material layer can identify the light of fingerprint depressed area reflection and the light of fingerprint convex area reflection, and by its turn
It is changed to different current signals.
6. touching display screen according to claim 1, which is characterized in that the liquid crystal display further includes being integrated in liquid crystal
Light focusing unit in the tft layer of display screen, the light focusing unit are located above the fingerprint sensing unit, for pair
Light into touching display screen carries out convergence enhancing.
7. a kind of touching display screen with fingerprint identification device, which is characterized in that the touching display screen is organic self-luminous
Display screen, organic self light emitting display panel include upper electrode, light emitting layer, lower electrode, are fitted in the lower electrode
The fingerprint sensing unit and control circuit of lower section, wherein
The fingerprint sensing unit is used to collect the light into touching display screen, and the light being collected into is converted to telecommunications
Number；Wherein, the light is the reflection light generated after screen light source is blocked by fingerprint；
The control circuit is used to that the electric signal that fingerprint sensing unit generates to be converted to picture signal according to matching algorithm, generates
Fingerprint image.
8. touching display screen according to claim 7, which is characterized in that the light emitting layer of organic self light emitting display panel
Including colorful optical filter array, the colorful optical filter array includes red pixel cell, green pixel cell and blue pixel
Unit, wherein the spacing between adjacent pixel unit is no more than 10 μm.
9. touching display screen according to claim 8, which is characterized in that two adjacent pictures in the colorful optical filter array
Projection of the gap of plain unit in the direction perpendicular to the display screen is located at the geometric center of the fingerprint sensing unit.
10. touching display screen according to claim 9, which is characterized in that the touching display screen further includes being located at lower layer
Light focusing unit between electrode and fingerprint sensing unit, for carrying out convergence enhancing to the light for entering touching display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821409467.1U CN208737429U (en) | 2018-08-29 | 2018-08-29 | A kind of touching display screen with fingerprint identification device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821409467.1U CN208737429U (en) | 2018-08-29 | 2018-08-29 | A kind of touching display screen with fingerprint identification device |
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| CN208737429U true CN208737429U (en) | 2019-04-12 |
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| CN201821409467.1U Active CN208737429U (en) | 2018-08-29 | 2018-08-29 | A kind of touching display screen with fingerprint identification device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109002222A (en) * | 2018-08-29 | 2018-12-14 | 武汉华星光电技术有限公司 | A kind of touching display screen with fingerprint identification device |
| CN111178335A (en) * | 2020-02-27 | 2020-05-19 | 武汉华星光电技术有限公司 | Display panel |
| CN112649984A (en) * | 2019-10-12 | 2021-04-13 | 北京小米移动软件有限公司 | Liquid crystal display panel and intelligent terminal provided with same |
-
2018
- 2018-08-29 CN CN201821409467.1U patent/CN208737429U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109002222A (en) * | 2018-08-29 | 2018-12-14 | 武汉华星光电技术有限公司 | A kind of touching display screen with fingerprint identification device |
| CN112649984A (en) * | 2019-10-12 | 2021-04-13 | 北京小米移动软件有限公司 | Liquid crystal display panel and intelligent terminal provided with same |
| CN111178335A (en) * | 2020-02-27 | 2020-05-19 | 武汉华星光电技术有限公司 | Display panel |
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