CN110096128A - Display panel, method, the display device that fingerprint recognition is carried out using display panel - Google Patents
Display panel, method, the display device that fingerprint recognition is carried out using display panel Download PDFInfo
- Publication number
- CN110096128A CN110096128A CN201910376434.4A CN201910376434A CN110096128A CN 110096128 A CN110096128 A CN 110096128A CN 201910376434 A CN201910376434 A CN 201910376434A CN 110096128 A CN110096128 A CN 110096128A
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- China
- Prior art keywords
- base plate
- fingerprint
- fingerprint identification
- display
- controller
- Prior art date
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/325—Power saving in peripheral device
- G06F1/3265—Power saving in display device
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
Abstract
Method, the display device of fingerprint recognition are carried out the invention discloses display panel, using display panel.The invention proposes a kind of display panels, comprising: display base plate has fingerprint identification area on the display base plate；The side of the display base plate is arranged in fingerprint identification module, the fingerprint identification module, and the fingerprint identification module is located in the fingerprint identification area in the orthographic projection on the display base plate；Fingerprint cue module, side of the display base plate far from the fingerprint identification module is arranged in the fingerprint cue module, the fingerprint cue module includes controller and photochromic component, the orthographic projection of the photochromic component on the substrate at least covers the fingerprint identification area, and the photochromic component can be switched to reflective state by transparent state by reflection or scatter ambient light.The fingerprint cue module can prompt fingerprint identification area using environment light as a result, reduce energy consumption, the user experience is improved.
Description
Technical field
The present invention relates to display fields, and in particular, to display panel, the side that fingerprint recognition is carried out using display panel
Method, display device.
Background technique
As science and technology is more and more flourishing, information security is also increasingly taken seriously, and electronic equipment such as mobile phone etc. is general
All over realizing through fingerprint recognition the permission for verifying user, and then ensure information security.With the popularization shielded, under screen comprehensively
Fingerprint recognition system is not take up the advantage of display space because of it, is widely used in the fingerprint recognition of electronic equipment.Often at present
Fingerprint recognition system includes that optical fingerprint identifying system, ultrasonic fingerprint identifying system and capacitance type fingerprint are known under screen
Other system etc..When using shielding lower fingerprint recognition system progress fingerprint recognition, finger is without directly contacting fingerprint identification module, therefore
It will not leave behind fingerprint trace on fingerprint identification module, can largely reduce finger dirt, grease and sweat etc. to unlock
Influence, make unlocked by fingerprint relatively sanitary, and adapt to different use environments.
However, current display panel, using display panel carry out fingerprint recognition method and display device still need
It improves.
Summary of the invention
The present invention be based on inventor couple on the fact that and problem discovery and understanding make:
Inventors have found that currently with shielding, lower fingerprint recognition system carries out the display panel of fingerprint recognition and display fills
It sets, there are the higher problems of energy consumption.Shield to descend fingerprint recognition system due to there is no physical button, user is carrying out fingerprint knowledge
When other, need rule of thumb to select the region of fingerprint identification module, inconvenient, user experience is poor, and is easy to occur
Accidentally touching (touching other regions on display panel other than fingerprint identification area).Currently in order to user is facilitated to carry out fingerprint
Identification operation lights the specific region (fingerprint identification region) of screen usually when user touches display screen to prompt user,
The lower section of the specific region is exactly fingerprint identification module.Although this method can be convenient user's operation, but more power consumption, such as
User touches unintentionally screen, also results in the fingerprint identification region for lighting entire screen or screen, frequently light screen and
Fingerprint identification region is more power-consuming, and screen and fingerprint identification region light after can be in illuminating state for some time,
Need to give screen continued power in this time, energy consumption is higher, greatly reduce using the display panel electronic equipment for example
The cruise duration of mobile phone.Therefore, if a kind of new display panel can be proposed, without persistently giving the fingerprint recognition of screen or screen
Area's power supply can be such that the fingerprint identification area on screen highlights, not only user-friendly, but also can reduce energy consumption, will be very big
The service performance using the electronic equipment of the display panel etc. is improved in degree, will largely be solved the above problems.
In view of this, in one aspect of the invention, the invention proposes a kind of display panels.Implementation according to the present invention
Example, which includes: display base plate, has fingerprint identification area on the display base plate；Fingerprint identification module, the fingerprint
The side of the display base plate is arranged in identification module, and orthographic projection of the fingerprint identification module on the display base plate is located at
In the fingerprint identification area；Fingerprint cue module, the fingerprint cue module are arranged in the display base plate far from the fingerprint
The side of identification module, the fingerprint cue module include controller and photochromic component, and the photochromic component is in the display
Orthographic projection on substrate at least covers the fingerprint identification area, and the photochromic component can by reflection or scatter ambient light, by
Transparent state is switched to reflective state.The fingerprint cue module can prompt fingerprint identification area using environment light as a result, reduce energy
Consumption, the user experience is improved.
According to an embodiment of the invention, the display panel further comprises: touch base plate, the touch base plate are arranged in institute
Side of the fingerprint cue module far from the display base plate is stated, the photochromic component includes electrochromic device, the controller
It is electrically connected with the touch base plate, and the controller is configured as to enable when the touch base plate receives touching signals
The electrochromic device is switched to coloured state by the transparent state.The electrochromic device is switched to after coloured state as a result,
Can be with reflection environment light, and then fingerprint identification area can be made to highlight, and the electrochromic device be switched to coloured state it
Afterwards, then without supplying power for, reflective state can be kept, energy consumption is reduced, improves the service performance of display panel.
According to an embodiment of the invention, the display panel further comprises: touch base plate, the touch base plate are arranged in institute
Side of the fingerprint cue module far from the display base plate is stated, the photochromic component includes scattering layer, the controller and described
Touch base plate electrical connection, and the controller is configured as that institute can be enabled when the touch base plate receives the touching signals
It states scattering layer and scattering states is switched to by the transparent state, wherein the scattering layer includes polymer network liquid crystal material.As a result,
The scattering layer is switched to after scattering states, can be with scatter ambient light, and then fingerprint identification area can be made to highlight, without continuing
It powers to scattering layer and highlights state with keep fingerprint identification area, reduce energy consumption, improve the usability of display panel
Energy.
According to an embodiment of the invention, the display panel further comprises: touch base plate, the touch base plate are arranged in institute
State side of the fingerprint cue module far from the display base plate, the photochromic component include two transparent substrates being oppositely arranged,
The liquid crystal molecule and non-circular polaroid being folded between the transparent substrate, the non-circular polaroid are disposed therein an institute
It states side of the transparent substrate far from the liquid crystal molecule, and is arranged close to the touch base plate, the non-circular polaroid and described
Layer of liquid crystal molecule poststack forms rotatory polarization piece, the controller and touch base plate electrical connection, and the controller is configured
For the non-circular polaroid and the liquid crystal molecule reflection environment can be enabled when the touch base plate receives the touching signals
Light is switched to the reflective state by the transparent state.The controller can make the liquid crystal point of fingerprint identification area corresponding region as a result,
Son deflects, and the liquid crystal molecule to deflect can be with reflection environment light with the non-circular inclined piece superposition above it, and then can make
Fingerprint identification area highlights, without persistently highlighting shape to what photochromic component continued power can keep fingerprint identification area
State reduces energy consumption, improves the service performance of display panel.
In another aspect of this invention, fingerprint recognition is carried out using mentioned-above display panel the invention proposes a kind of
Method.According to an embodiment of the invention, the display panel includes the display base plate with fingerprint identification area, it is arranged described
The fingerprint identification module and fingerprint cue module of display base plate side, the fingerprint identification module is on the display base plate
Orthographic projection is located in the fingerprint identification area, and the fingerprint cue module is arranged in the display base plate far from the fingerprint recognition
The side of module, the fingerprint cue module include controller and photochromic component, and the photochromic component is in the display base plate
On orthographic projection at least cover the fingerprint identification area, which comprises the controller receives when lighting signal, control
The photochromic component is converted to reflective state by transparent state by reflection or scatter ambient light.This method can make discoloration group as a result,
Part easily highlights fingerprint identification area using environment light, is quick on the draw after receiving and lighting signal, and energy consumption compared with
It is few, improve the service performance of display panel.
According to an embodiment of the invention, the photochromic component includes electrochromic device, the electrochromic device includes
The first substrate and the second substrate being oppositely arranged, and first between first substrate and second substrate are saturating
Bright conductive layer and the second transparency conducting layer have electricity between first transparency conducting layer and second transparency conducting layer
Mutagens chromatograph, the controller are connected with first transparency conducting layer and second transparency conducting layer, the display surface
Plate further comprises touch base plate, and the touch base plate and controller electrical connection, the touch base plate detect that touch-control is believed
Number when, Xiang Suoshu controller send described in light signal.Controller receives as a result, light signal after, can control and be applied to
Voltage on first transparency conducting layer and the second transparency conducting layer, and then electrochromic layer is made to be switched to coloring by transparent state
State, the electrochromic device in coloured state can be with reflection environment light, and then highlights fingerprint identification area, and reduce
Energy consumption.
According to an embodiment of the invention, the photochromic component includes scattering layer, the display panel further comprises touch-control
Substrate, the touch base plate and controller electrical connection, when the touch base plate detects touching signals, Xiang Suoshu controller
Signal is lighted described in transmission.Controller receives as a result, light signal after, can control scattering layer by transparent state and be switched to scattering
State, the scattering layer in scattering states can be with scatter ambient light, and then highlights fingerprint identification area, and reduces energy consumption,
Improve the service performance of display panel.
According to an embodiment of the invention, the photochromic component include two transparent substrates being oppositely arranged, be folded in it is described
Liquid crystal molecule and non-circular polaroid between transparent substrate, the non-circular polaroid are disposed therein the transparent substrate
Side far from the liquid crystal molecule, and be arranged close to the touch base plate, the non-circular polaroid and the layer of liquid crystal molecule
Poststack forms rotatory polarization piece, the controller and transparent substrate electrical connection, and the display panel further comprises touch-control base
Plate, the touch base plate and controller electrical connection, when the touch base plate detects touching signals, Xiang Suoshu controller hair
Signal is lighted described in sending.Controller receives as a result, light signal after, the liquid crystal molecule of fingerprint identification area corresponding region can be made
It deflects, the liquid crystal molecule to deflect can be with reflection environment light with the non-circular inclined piece superposition above it, and then can make to refer to
Line cog region highlights, and reduces energy consumption, improves the service performance of display panel.
Know according to an embodiment of the invention, orthographic projection of the photochromic component on the display base plate covers the fingerprint
Other area and at least part region in addition to the fingerprint identification area, the touch base plate detect touching signals and to institutes
It states after lighting signal described in controller transmission, the method further includes: the liquid crystal molecule deflects, the fingerprint
The light and non-fingerprint identification area of the non-circular polaroid of cog region corresponding region and liquid crystal molecule reflection correspond to area
The non-circular polaroid in domain and the light of liquid crystal molecule reflection form difference.Thus, it is possible to make to refer to using environment light
Line cog region highlights, and reduces energy consumption, improves the service performance of display panel.
In still another aspect of the invention, the invention proposes a kind of display devices.According to an embodiment of the invention, the display
Device includes: shell, and the shell includes backboard and the side frame around the backboard, the backboard and the side frame
Limit accommodation space；And mentioned-above display panel, the display panel are located in the accommodation space, and described aobvious
Show that the light emission side of panel is arranged away from the backboard side.There is the display device mentioned-above display panel to be had as a result,
Whole features for having and a little, details are not described herein.Generally speaking, the display device user experience is good, and energy consumption is lower, makes
With functional.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 shows the schematic diagram of the section structure of display panel according to an embodiment of the invention；
Fig. 2 shows the structural schematic diagram of display panel according to an embodiment of the invention；
Fig. 3 shows the schematic diagram of the section structure of display panel in accordance with another embodiment of the present invention；
Fig. 4 shows the structural schematic diagram of electrochromic device according to an embodiment of the invention；
Fig. 5 shows the schematic diagram of the section structure of the display panel of another embodiment according to the present invention；
Fig. 6 shows the schematic diagram of the section structure of the display panel of another embodiment according to the present invention；
Fig. 7 shows a method flow diagram using display panel progress fingerprint recognition according to the present invention；And
Fig. 8 shows the method flow in accordance with another embodiment of the present invention that fingerprint recognition is carried out using display panel
Figure.
Description of symbols:
100: display base plate；110: fingerprint identification area；200: fingerprint identification module；300: fingerprint cue module；310: becoming
Colour cell part；311: the first substrates；312: the first transparency conducting layers；313: electrochromic layer；314: the second transparency conducting layers；315:
Second substrate；10: transparent substrate；20: liquid crystal molecule；30: non-circular polaroid；320: controller；1000: display panel.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In one aspect of the invention, the invention proposes a kind of display panels.According to an embodiment of the invention, with reference to figure
1 and Fig. 2 (wherein, Fig. 1 is sectional view of the region M in Fig. 2 along the direction AA '), display panel 1000 includes display base plate
100, fingerprint identification module 200 and fingerprint cue module 300, wherein there is fingerprint identification area 110 on display base plate 100, refer to
The side of display base plate 100, orthographic projection position of the fingerprint identification module 200 on display base plate 100 is arranged in line identification module 200
In fingerprint identification area 100, side of the display base plate 100 far from fingerprint identification module 200 is arranged in fingerprint cue module 300.
Specifically, fingerprint cue module 300 includes controller 320 and photochromic component 310, and photochromic component 310 is on display base plate 100
Orthographic projection at least cover fingerprint identification area 110, and photochromic component 310 can be cut by reflection or scatter ambient light by transparent state
It is changed to reflective state (with reference to shown by the dotted arrow in Fig. 1, fingerprint cue module 300 can reflect or dissipate scattered environment light).
The fingerprint cue module 300 can be such that fingerprint identification area highlights using environment light as a result, reduce energy consumption, improve use
Family experience.
In order to make it easy to understand, can be realized the original of above-mentioned beneficial effect to display panel according to an embodiment of the present invention below
Reason is illustrated:
As previously mentioned, currently in order to user is facilitated to carry out fingerprint recognition operation, usually when user touches display screen, point
The specific region (fingerprint identification region) of bright screen or screen prompts user.Although this method can be convenient user's operation,
But more power consumption, such as user touch unintentionally screen, also result in the fingerprint identification region for lighting entire screen or screen,
Frequently light screen and fingerprint identification region is more power-consuming, and screen and fingerprint identification region light after when having one section
Between be in illuminating state, need to give screen continued power in this time, energy consumption is higher, greatly reduces and uses the display panel
Electronic equipment such as mobile phone cruise duration.And display panel according to an embodiment of the present invention, by being set in display base plate
Fingerprint cue module is counted, which can be such that fingerprint identification area highlights using environment light.Specifically, when need into
When row fingerprint recognition, the controller in the fingerprint cue module can control photochromic component, become its structure or performance etc.
To change, photochromic component can be switched to reflective state by transparent state, and the photochromic component in reflective state can reflect or scatter ambient light,
And then can use environment light highlights fingerprint identification region, reduces energy consumption.In other words, according to embodiments of the present invention
Display panel in, when carrying out fingerprint recognition, it is only necessary to add a small amount of electricity that photochromic component is made to be switched to reflective state by transparent state
, photochromic component can keep highlighting for fingerprint identification area using environment light in subsequent process, entire without lighting
It screen and persistently powers after lighting screen to screen to keep highlighting for fingerprint identification area, and is also avoided that unintentionally
Touching screen lights screen persistently, the energy loss in turn resulted in.Also, fingerprint cue module is lighted also not against electronics
Equipment power supply, can be realized by reflection environment light and lights.Energy consumption as a result, when display panel progress fingerprint recognition is less,
And it is easy to operate, improve the service performance of display panel.
According to an embodiment of the invention, the display panel 1000 further comprises touch base plate 400, touch-control base with reference to Fig. 3
Side of the fingerprint cue module 300 far from display base plate 100 is arranged in plate 400, and touch base plate 400 can be with 320 electricity of controller
Connection.User is when touching touch base plate 400 as a result, and after touch base plate detects touching signals, touching substrate 400 can be with
Electric signal (such as lighting signal) is issued to controller 320, is switched so that controller 320 controls photochromic component 310 by transparent state
For reflective state, photochromic component reflection or scatter ambient light, so that fingerprint identification area be made persistently to light and (highlight).
It according to an embodiment of the invention, the concrete type of display base plate 100 is not particularly limited, such as can be liquid crystal
Show substrate, can be organic light emitting display substrate etc..According to an embodiment of the invention, the concrete type of fingerprint identification module 200
It is not particularly limited, such as mould can be prompted fast for optical fingerprint, can be ultrasonic fingerprint cue module, can be capacitor
Formula fingerprint cue module etc..
According to an embodiment of the invention, the concrete type of fingerprint cue module 300 is also not particularly limited, controller 310
It can be control chip, transparent electrode etc., as long as its state that can control photochromic component 320 changes, further,
As long as what it can receive the sendings such as touch base plate 400 lights signal, and controls photochromic component 320 and be switched to reflective state by transparent state
?.Specifically, the concrete type of photochromic component 320 is not particularly limited, as long as can switch between transparent state and reflective state
?.
According to some embodiments of the present invention, with reference to Fig. 3 and Fig. 4, photochromic component 310 can be electrochromic device,
Controller 320 and touch base plate 400 are electrically connected, and controller 320 can enable electricity when touch base plate 400 receives touching signals
Mutagens color device is switched to coloured state by transparent state.The electrochromic device is switched to after coloured state as a result, can be with tore of reflection
Border light, and then fingerprint identification area 110 can be made to highlight, and the electrochromic device is switched to coloured state and then nothing
It need to supply power for, reflective state can be kept, reduce energy consumption, improve the service performance of display panel 1000.
It specifically, may include the first substrate being oppositely arranged when photochromic component 310 is electrochromic device with reference to Fig. 4
311 and second substrate 315, and the first transparency conducting layer 312 between the first substrate 311 and the second substrate 315 with
And second transparency conducting layer 314, there is electrochromic layer between the first transparency conducting layer 312 and the second transparency conducting layer 314
315, controller 320 can be connected with the first transparency conducting layer 312 and the second transparency conducting layer 314.Controller 320 as a result,
It receives after lighting signal, can control the electricity being applied on the first transparency conducting layer 312 and the second transparency conducting layer 314
Pressure, and then electrochromic layer 313 is made to be switched to coloured state by transparent state, the electrochromic device in coloured state can be with tore of reflection
Border light, and then highlight fingerprint identification area 110, and reduce energy consumption.
According to an embodiment of the invention, photochromic component 310 is on the substrate 100 when photochromic component 310 is electrochromic device
Orthographic projection can cover entire substrate 100, at this point, the first transparency conducting layer 312 and the second transparency conducting layer 314 can be equal
For divisional electrode, i.e. the first transparency conducting layer 312 and the second transparency conducting layer 314 can independently control fingerprint identification area
The electrochromic layer 300 of 110 corresponding regions changes colour, and is switched to coloured state by transparent state, and then keeps fingerprint identification area 110 prominent aobvious
Show.Thus, it is possible to when avoiding that only photochromic component 310 being arranged in the corresponding region of fingerprint identification area 110, at display panel
In transparent state, 110 corresponding region of fingerprint identification area is due to being provided with photochromic component 310 (including multilayered structure), light transmission rate
Relatively poor (the region light transmission rate than not set photochromic component 310 is poor), to influence when display panel is in transparent state
Consistency influences the appearance of display panel.
Other embodiments according to the present invention, with reference to Fig. 5, photochromic component 310 can also include scattering layer, controller
320 and touch base plate 400 be electrically connected, and controller 320 can when touch base plate 400 receives touching signals, to scattering layer plus
Electricity, enables the liquid crystal material in scattering layer deflect, and is switched to scattering states by transparent state, wherein scattering layer may include polymerization
Object network Liquid Crystal material (Polymer Network liquid crystal Material, also known as PNM liquid crystal material), this is dissipated
Layer is penetrated to be switched to after scattering states, can be with scatter ambient light, and then fingerprint identification area 110 can be made to highlight, without continuing
It powers to scattering layer and highlights state with keep fingerprint identification area 110, reduce energy consumption, improve display panel 1000
Service performance.
Other embodiment according to the present invention, with reference to Fig. 6, photochromic component 310 may include be oppositely arranged two thoroughly
Bright substrate 10A and 10B, and the liquid crystal molecule 20 and non-circular polaroid 30 that are folded between transparent substrate 10A and 10B, thoroughly
Bright substrate 10A and 10B can be transparent electrode, such as tin indium oxide (ITO), non-circular polaroid 30 be disposed therein one it is transparent
Side of the substrate 10 far from liquid crystal molecule 20, and (i.e. non-circular polaroid 30 is arranged in transparent substrate close to the setting of touch base plate 400
Side of the 10A far from liquid crystal molecule 20).Non-circular polaroid 30 and layer of liquid crystal molecule 20 form rotatory polarization piece after being laminated.Specifically,
The phase difference of liquid crystal molecule 20 can be 1/4 λ, i.e., the phase difference of liquid crystal molecule 20 can be 550nm, the slow axis of liquid crystal molecule 20
Angle with non-circular polaroid 30 can be 45 °, and the liquid crystal molecule 20 and non-circular polaroid 30 can form circle after being superimposed as a result,
Polaroid.
Specifically, orthographic projection of the photochromic component 310 on substrate 110 can cover fingerprint identification area 110 and at least one
(for example, with reference to shown in Fig. 6, photochromic component 310 is on substrate 110 in region of the part in addition to fingerprint identification area 110
The whole display base plate 100 of orthographic projection covering).Specifically, transparent substrate 10A and 10B can be divisional electrode, i.e. transparent substrate
10A and 10B can independently control fingerprint identification area corresponding region liquid crystal molecule and non-fingerprint identification area corresponding region
Liquid crystal molecule is deflected.Specifically, when needing to carry out fingerprint recognition, touch base plate 400 receives touching signals and to control
Signal is lighted in the sending of device 320 processed, and controller 320, which receives, lights signal, and controls transparent substrate 10A and 10B, only enables fingerprint
The liquid crystal molecule of 110 corresponding region of cog region deflects, thus, it is possible to make the liquid crystal point of 110 corresponding region of fingerprint identification area
Son 20 deflects, and the liquid crystal molecule 20 to deflect can be with reflection environment light, in turn with the non-circular inclined superposition of piece 30 above it
Fingerprint identification area 110 can be made to highlight.Specifically, controller 320 receives light signal after, also can control transparent base
Plate 10A and 10B, so that the liquid crystal molecule of 110 corresponding region of fingerprint identification area and the liquid crystal of non-fingerprint identification area corresponding region point
The deflection angle difference etc. of son, so as to so that the liquid crystal molecule 20 of 110 corresponding region of fingerprint identification area and non-circular above it
The liquid crystal molecule 20 of light and non-fingerprint identification area corresponding region that polaroid 30 reflects together and the non-circular polaroid above it
30 light reflected together form difference, so that fingerprint identification area 110 can also be made to highlight.Also, at display panel
When transparent state (not needing fingerprint identification area 110 to highlight), the light transmission rate of display panel everywhere is more consistent, appearance
Consistency is preferable.It should be noted that mentioned-above " liquid crystal molecule 20 of 110 corresponding region of fingerprint identification area " is i.e.: aobvious
Show that the orthographic projection on substrate 100 is located at the liquid crystal molecule 20 in fingerprint identification area 100.
In summary, which can make fingerprint identification area prominent by setting fingerprint cue module using environment light
It shows out, reduce energy consumption, the user experience is improved.
In another aspect of this invention, fingerprint recognition is carried out using mentioned-above display panel the invention proposes a kind of
Method.According to an embodiment of the invention, the display panel mentioned in this method can have previously described display panel institute
The whole features and advantage having, details are not described herein.According to an embodiment of the invention, with reference to Fig. 7, this method comprises:
S100: controller, which receives, lights signal
In this step, controller, which receives, lights signal.According to an embodiment of the invention, as previously mentioned, the display surface
Plate needs to highlight fingerprint identification area, with user-friendly before carrying out fingerprint recognition.Therefore, fingerprint knowledge is being carried out
Before not, controller, which needs first to receive, lights signal (even the highlighted signal of fingerprint identification area).Reality according to the present invention
Example is applied, with reference to Fig. 8, before this step, this method further comprises:
S300: touch base plate detects touching signals
In this step, touch base plate detects touching signals.According to an embodiment of the invention, as previously mentioned, the display
Panel is before carrying out fingerprint recognition, and by being touched with finger or stylus etc. to screen, touch base plate detects user
After the touching signals, subsequent step can be carried out, to start fingerprint cue module, highlights fingerprint identification area,
It is user-friendly.
S400: signal is lighted to controller sending
In this step, after touch base plate detects touching signals in preceding step, signal is lighted to controller sending.
According to an embodiment of the invention, the controller electrical connection that touch panel and fingerprint prompt mould fast, therefore, touch base plate detects touching
After controlling signal, it can be issued to controller and light signal.
S200: the reflection of control photochromic component or scatter ambient light, photochromic component become reflective state from transparent state
In this step, touch base plate issues to controller and lights signal in preceding step, and controller receives a little
After bright signal, controller, which can control photochromic component, becomes reflective state from transparent state, and the photochromic component in reflective state can be with
Reflection or scatter ambient light, and then can use environment light makes fingerprint identification area propose display, it is user-friendly, and save
Energy consumption.
According to some embodiments of the present invention, when photochromic component includes electrochromic device: touch base plate receives touch-control
Signal, and to controller sending light signal, controller receives light signal after, can control and be applied to electrochromic device
The first transparency conducting layer and the second transparency conducting layer on voltage, and then electrochromic layer is made to be switched to coloring by transparent state
State, the electrochromic device in coloured state can be with reflection environment light, and then highlights fingerprint identification area, and reduce
Energy consumption.
Other embodiments according to the present invention, when photochromic component includes scattering layer: touch base plate receives touching signals,
And to controller sending light signal, controller receives light signal after, can control scattering layer be switched to by transparent state it is scattered
State is penetrated, the scattering layer in scattering states can be with scatter ambient light, and then highlights fingerprint identification area, and reduces energy
Consumption, improves the service performance of display panel.Specifically, scattering layer may include PNM liquid crystal material etc., and controller can be given
PNM liquid crystal material is powered, and then liquid crystal molecule is made to deflect, and the liquid crystal material after deflection can be with scatter ambient light, and then makes
Fingerprint identification area highlights.
Other embodiment according to the present invention, photochromic component include two transparent substrates being oppositely arranged, are folded in
When liquid crystal molecule and non-circular polaroid between bright substrate, touch base plate receives touching signals, and issues point to controller
Bright signal, controller receives light signal after, the liquid crystal molecule of fingerprint identification area corresponding region can be made to deflect, occur
The liquid crystal molecule of deflection and the non-circular inclined piece above it are superimposed can be with reflection environment light, and then fingerprint identification area can be made prominent aobvious
Show, and reduce energy consumption, improves the service performance of display panel.Specifically, when non-circular polaroid and liquid crystal molecule exist
When the orthographic projection covering fingerprint identification area on display base plate and at least part region in addition to fingerprint identification area, transparent base
Plate 10A and 10B can be divisional electrode, after touch base plate detects touching signals and lights signal to controller transmission, control
Device processed can control transparent substrate 10A and 10B, the angle for making the liquid crystal molecule of fingerprint identification area corresponding region deflect and non-
The angle difference etc. that the liquid crystal molecule of fingerprint identification area corresponding region deflects, and then make the non-of fingerprint identification area corresponding region
The non-circular polaroid and liquid crystal molecule of the light and non-fingerprint identification area corresponding region of rotatory polarization piece and liquid crystal molecule reflection
The light of reflection forms difference.Thus, it is possible to highlight fingerprint identification area using environment light, reduce energy consumption, improves
The service performance of display panel.
In summary, this method can make photochromic component after receiving and lighting signal, easily make to refer to using environment light
Line cog region highlights, and is quick on the draw, and energy consumption is less, improves the service performance of display panel.
In still another aspect of the invention, the invention proposes a kind of display devices.According to an embodiment of the invention, the display
Device includes: shell；And mentioned-above display panel.The display device has mentioned-above display panel institute as a result,
Whole features for having and a little, details are not described herein.Generally speaking, the display device user experience is good, and energy consumption is lower,
Service performance is good.
In the description of this specification, the orientation or positional relationship of the instructions such as term " on ", "lower" is based on shown in attached drawing
Orientation or positional relationship, be merely for convenience of description the present invention rather than require the present invention must with specific orientation construct and
Operation, therefore be not considered as limiting the invention.
In the description of this specification, the description of reference term " one embodiment ", " another embodiment " etc. means to tie
The embodiment particular features, structures, materials, or characteristics described are closed to be included at least one embodiment of the present invention.At this
In specification, the schematic representation of the above terms does not necessarily have to refer to the same embodiment or example.Moreover, the tool of description
Body characteristics, structure, material or feature may be combined in any suitable manner in any one or more of the embodiments or examples.This
Outside, without conflicting with each other, those skilled in the art by different embodiments described in this specification or can show
The feature of example and different embodiments or examples is combined.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of display panel characterized by comprising
Display base plate has fingerprint identification area on the display base plate；
The side of the display base plate is arranged in fingerprint identification module, the fingerprint identification module, and the fingerprint identification module exists
Orthographic projection on the display base plate is located in the fingerprint identification area；
One of the display base plate far from the fingerprint identification module is arranged in fingerprint cue module, the fingerprint cue module
Side, the fingerprint cue module include controller and photochromic component, positive throwing of the photochromic component on the display base plate
Shadow at least covers the fingerprint identification area, and the photochromic component can be switched to by reflection or scatter ambient light by transparent state
Reflective state.
2. display panel according to claim 1, which is characterized in that further comprise: touch base plate, the touch base plate
The side of the fingerprint cue module far from the display base plate is set,
The photochromic component includes electrochromic device, the controller and touch base plate electrical connection, and the controller
It is configured as the electrochromic device being enabled to be switched to by the transparent state when the touch base plate receives touching signals
Coloured state.
3. display panel according to claim 1, which is characterized in that further comprise: touch base plate, the touch base plate
The side of the fingerprint cue module far from the display base plate is set,
The photochromic component includes scattering layer, the controller and touch base plate electrical connection, and the controller is configured
For that the scattering layer can be enabled to be switched to scattering states by the transparent state when the touch base plate receives touching signals, wherein
The scattering layer includes polymer network liquid crystal material.
4. display panel according to claim 1, which is characterized in that further comprise: touch base plate, the touch base plate
The side of the fingerprint cue module far from the display base plate is set,
The photochromic component include two transparent substrates being oppositely arranged, the liquid crystal molecule being folded between the transparent substrate with
And non-circular polaroid, the non-circular polaroid are disposed therein a side of the transparent substrate far from the liquid crystal molecule,
And be arranged close to the touch base plate, the non-circular polaroid and the layer of liquid crystal molecule poststack form rotatory polarization piece,
The controller and touch base plate electrical connection, and the controller is configured as to receive in the touch base plate
When the touching signals, the non-circular polaroid and the liquid crystal molecule reflection environment light are enabled, institute is switched to by the transparent state
State reflective state.
5. a kind of method for carrying out fingerprint recognition using the described in any item display panels of claim 1-4, which is characterized in that institute
Stating display panel includes the display base plate with fingerprint identification area, be arranged in the fingerprint identification module of the display base plate side with
And fingerprint cue module, the fingerprint identification module are located in the fingerprint identification area in the orthographic projection on the display base plate,
Side of the display base plate far from the fingerprint identification module, the fingerprint cue module is arranged in the fingerprint cue module
Including controller and photochromic component, orthographic projection of the photochromic component on the display base plate at least covers the fingerprint and knows
Other area, which comprises
The controller receives when lighting signal, controls the photochromic component by reflection or scatter ambient light, by transparent state
Be converted to reflective state.
6. according to the method described in claim 5, it is characterized in that, the photochromic component includes electrochromic device, the electricity
Mutagens color device includes the first substrate and the second substrate being oppositely arranged, and is located at first substrate and second lining
The first transparency conducting layer and the second transparency conducting layer between bottom, first transparency conducting layer and described second transparent lead
There is electrochromic layer, the controller and first transparency conducting layer and the second transparency conducting layer phase between electric layer
Even,
The display panel further comprises touch base plate, the touch base plate and controller electrical connection, the touch-control base
When plate detects touching signals, signal is lighted described in the transmission of Xiang Suoshu controller.
7. according to the method described in claim 5, it is characterized in that, the photochromic component includes scattering layer, the display panel
It further comprise touch base plate, the touch base plate and controller electrical connection, the touch base plate detect touching signals
When, Xiang Suoshu controller send described in light signal.
8. according to the method described in claim 5, it is characterized in that, the photochromic component includes two transparent bases being oppositely arranged
Plate, the liquid crystal molecule being folded between the transparent substrate and non-circular polaroid, the non-circular polaroid are disposed therein one
A side of the transparent substrate far from the liquid crystal molecule, and close to the touch base plate be arranged, the non-circular polaroid and
The layer of liquid crystal molecule poststack forms rotatory polarization piece, the controller and transparent substrate electrical connection,
The display panel further comprises touch base plate, the touch base plate and controller electrical connection, the touch-control base
When plate detects touching signals, signal is lighted described in the transmission of Xiang Suoshu controller.
9. display panel according to claim 8, which is characterized in that the photochromic component on the display base plate just
Projection covers the fingerprint identification area and at least part region in addition to the fingerprint identification area,
The touch base plate detect touching signals and to the controller send described in light signal after, the method is into one
Step includes:
The liquid crystal molecule deflects, the non-circular polaroid of the fingerprint identification area corresponding region and the liquid crystal point
The light of the non-circular polaroid and liquid crystal molecule reflection of subreflexive light and non-fingerprint identification area corresponding region
Form difference.
10. a kind of display device characterized by comprising
Shell, the shell include backboard and the side frame around the backboard, and the backboard and the side frame limit
Accommodation space out；And
The described in any item display panels of claim 1-4, the display panel is located in the accommodation space, and the display
The light emission side of panel is arranged away from the backboard side.
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| CN201910376434.4A CN110096128B (en) | 2019-05-07 | 2019-05-07 | Display panel, method for fingerprint identification by using display panel and display device |
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| CN201910376434.4A CN110096128B (en) | 2019-05-07 | 2019-05-07 | Display panel, method for fingerprint identification by using display panel and display device |
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| CN110096128B CN110096128B (en) | 2021-10-26 |
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| CN110096128B (en) | 2021-10-26 |
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