CN106095159B - The driving method of touch screen, display device and display device - Google Patents
The driving method of touch screen, display device and display device Download PDFInfo
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- CN106095159B CN106095159B CN201610356493.1A CN201610356493A CN106095159B CN 106095159 B CN106095159 B CN 106095159B CN 201610356493 A CN201610356493 A CN 201610356493A CN 106095159 B CN106095159 B CN 106095159B
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- touch screen
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- capacitance touching
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Position Input By Displaying (AREA)
Abstract
The present invention provides the driving methods of a kind of touch screen, display device and display device, the touch screen includes capacitance touching control circuit, the capacitance touching control circuit includes several capacitance touching control electrodes and the touch detection chip that is connected with the capacitance touching control electrode, the touch screen further includes trigger circuit, the trigger circuit triggers the touch detection chip to capacitance touching control electrode output touch scanning signals for detecting whether the touch screen is touched, and when detecting that the touch screen is touched.The reduction of touch screen power consumption may be implemented in the present invention, achievees the purpose that power saving.
Description
Technical field
The present invention relates to display field more particularly to the driving methods of a kind of touch screen, display device and display device.
Background technique
With the rapid development of display technology, touch screen (Touch Screen Panel) has gradually spread the life of people
In work.Wherein, the advantages that capacitive touch screen is with its unique touch-control principle, relies on high sensitivity, long-life, high transparency,
It is pursued in the industry as new lover, but existing capacitive touch screen has that power consumption is larger.
Summary of the invention
(1) technical problems to be solved
The technical problem to be solved by the present invention is the driving method of a kind of touch screen, display device and display device is provided,
It can reduce power consumption.
(2) technical solution
In order to solve the above technical problems, technical solution of the present invention provides a kind of touch screen, including capacitance touching control circuit,
The capacitance touching control circuit includes several capacitance touching control electrodes and the touch detection chip that is connected with the capacitance touching control electrode,
The touch screen further includes trigger circuit, and the trigger circuit is used to detect whether the touch screen is touched, and when detection
The touch detection chip is triggered when being touched to the touch screen exports touch scanning signals to the capacitance touching control electrode.
Preferably, the trigger circuit includes detection chip and conductive layer, and the detection chip is used for the conduction
Layer applies detection signal, and judges whether the touch screen is touched according to the feedback signal of the conductive layer.
Preferably, the conductive layer is netted, and the opening position on the conductive layer is arranged in the capacitance touching control electrode
It sets.
In order to solve the above technical problems, the present invention also provides a kind of display device, including touch screen, the touch screen packet
Capacitance touching control circuit is included, the capacitance touching control circuit includes several capacitance touching control electrodes and is connected with the capacitance touching control electrode
Touch detection chip, the touch screen further includes trigger circuit, the trigger circuit for detect the touch screen whether by
It touches, and triggers the touch detection chip when detecting that the touch screen is touched and exported to the capacitance touching control electrode
Touch scanning signals.
Preferably, the trigger circuit includes detection chip and conductive layer, and the detection chip is used for the conduction
Layer applies detection signal, and judges whether the touch screen is touched according to the feedback signal of the conductive layer.
Preferably, the conductive layer is netted, and the opening position on the conductive layer is arranged in the capacitance touching control electrode
It sets.
It preferably, further include the common electrode layer for display, pixel electrode layer and liquid crystal layer.
Preferably, the common electrode layer is multiplexed with several capacitance touching control electrodes.
Preferably, the conductive layer is identical material with the pixel electrode layer and same layer is arranged.
Preferably, the touch screen further includes fingerprint recognition circuit, and the fingerprint recognition circuit includes several for knowing
The photosensitive touch-control module of other finger print information；
The display device further includes control circuit, and the control circuit is used for the control when receiving finger scan order
The frame picture refreshing frequency of the display device is reduced to second frequency by first frequency, and when the frame of the display device is drawn
Face refreshing frequency controls the fingerprint recognition circuit progress fingerprint recognition after being reduced to second frequency.
In order to solve the above technical problems, the present invention also provides a kind of driving method of display device, the display device
Including touch screen, the touch screen includes capacitance touching control circuit, the capacitance touching control circuit include several capacitance touching control electrodes with
And the touch detection chip being connected with the capacitance touching control electrode, which is characterized in that the driving method includes:
Detection circuit detects whether the touch screen is touched, the detection electricity when detecting that the touch screen is touched
It triggers the touch detection chip and exports touch scanning signals to the capacitance touching control electrode in road.
Preferably, the touch screen further includes fingerprint recognition circuit, and the fingerprint recognition circuit includes several for knowing
The photosensitive touch-control module of other finger print information, the driving method further include:
Control circuit is receiving the frame picture refreshing frequency that the display device is controlled when finger scan order by first
Frequency is reduced to second frequency；
Control circuit controls the fingerprint and knows after the frame picture refreshing frequency of the display device is reduced to second frequency
Other circuit carries out fingerprint recognition.
(3) beneficial effect
Touch screen provided by the invention detects whether touch screen is touched by trigger circuit, is not touched in touch screen
In the case where, the touch detection chip in capacitance touching control circuit can not export touch scanning signals to capacitance touching control electrode, when
Trigger circuit detects that touch detection chip is then triggered when touch screen is touched exports touch scanning signals to capacitance touching control electrode,
To carry out touch control detection, the reduction of touch screen power consumption may be implemented through the above way, achieve the purpose that power saving.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram for touch screen that embodiment of the present invention provides；
Fig. 2 is a kind of schematic diagram for trigger circuit that embodiment of the present invention provides；
Fig. 3 is the driver' s timing figure for the display device that embodiment of the present invention provides；
Fig. 4 is the driving flow chart for the display device that embodiment of the present invention provides.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
It is a kind of schematic diagram for touch screen that embodiment of the present invention provides referring to Fig. 1, Fig. 1, which includes capacitor
Touch-control circuit 100, the capacitance touching control circuit include several capacitance touching control electrodes and are connected with the capacitance touching control electrode
Touch detection chip, the touch screen further include trigger circuit 200, and the trigger circuit 200 is for detecting the touch screen
It is no to be touched, and the touch detection chip is triggered to the capacitance touching control electrode when detecting that the touch screen is touched
Export touch scanning signals.
The touch screen that embodiment of the present invention provides detects whether touch screen is touched by trigger circuit, in touch screen
In the case where not touched, the touch detection chip in capacitance touching control circuit can not export touch-control scanning to capacitance touching control electrode
Signal (i.e. capacitance touching control circuit is without touch control detection), then triggers touch-control when trigger circuit detects that touch screen is touched and detects
Survey chip may be implemented to touch through the above way to capacitance touching control electrode output touch scanning signals to carry out touch control detection
The reduction for shielding power consumption, achievees the purpose that power saving.
For example, the trigger circuit may include detection chip and conductive layer, the detection chip to described for leading
Electric layer applies detection signal, and judges whether the touch screen is touched according to the feedback signal of the conductive layer, wherein triggering
Conductive layer in circuit can be the electrode or a netted electrode of a planar, and size dimension can be with touch screen phase
Match, when user touches any position on touch screen, user's finger can form capacitor with the conductive layer of trigger circuit, therefore
It can judge whether touch screen is touched by user by the feedback signal of conductive layer, for above-mentioned trigger circuit, in touch screen
In the case where not touched, trigger circuit only needs this electrode of conductive layer to apply detection signal, and the detection signal is only
For judging whether touch screen is touched, and do not have to detection touch location, therefore can be effectively reduced touch screen power consumption, reaches province
The purpose of electricity.
For example, can be with as shown in Fig. 2, conductive layer 210 in trigger circuit can be netted, and if capacitance touching control circuit
The aperture position on conductive layer 210 is arranged in dry capacitance touching control electrode 110, wherein the detection chip 220 of trigger circuit is to conduction
The detection signal that layer 210 applies can be voltage square wave signal.
In addition, embodiment of the present invention additionally provides a kind of display device, including touch screen, the touch screen includes capacitor
Touch-control circuit (touch sensor), the capacitance touching control circuit include several capacitance touching control electrodes and with the capacitance touching control
The connected touch detection chip of electrode, the touch screen further includes trigger circuit (Trigger sensor), the trigger circuit
For detecting whether the touch screen is touched, and the touch detection core is triggered when detecting that the touch screen is touched
Piece exports touch scanning signals to the capacitance touching control electrode.
For example, the trigger circuit includes detection chip and conductive layer, the detection chip is used for the conductive layer
Apply detection signal, and judges whether the touch screen is touched according to the feedback signal of the conductive layer.Wherein, trigger circuit
In conductive layer can match with touch screen for the electrode or a netted electrode, size dimension of planar,
When user touches any position on touch screen, user's finger can form capacitor with the conductive layer of trigger circuit, therefore can
Judge whether touch screen is touched by user with the feedback signal by conductive layer, for above-mentioned trigger circuit, touch screen not
In the case where touching, trigger circuit only needs this electrode of conductive layer to apply detection signal, and detects signal and be served only for sentencing
Whether disconnected touch screen is touched, and does not have to detection touch location, therefore can be effectively reduced touch screen power consumption, reaches the mesh of power saving
's.
For example, the conductive layer in trigger circuit can be netted, and several capacitance touching control electrodes of capacitance touching control circuit are set
Set aperture position on the electrically conductive.
Wherein, the display device in embodiment of the present invention can be liquid crystal display device, further include for display
Common electrode layer, pixel electrode layer and liquid crystal layer.Wherein, above-mentioned touch screen can be in cell structure, for example, can be with
The common electrode layer of liquid crystal display device is multiplexed with several capacitance touching control electrodes in capacitance touching control circuit, and is driven using timesharing
Flowing mode, driver' s timing figure are only showing stage (Always display as shown in figure 3, when touch screen is not touched
Stage), touch detection chip does not export touch scanning signals (i.e. without touch control detection) to capacitance touching control electrode, at this time capacitor
Touch control electrode is used as public electrode to realize display function, meanwhile, the detection chip conductive layer in trigger circuit exports detection
Whether signal, real-time judge touch screen are touched, when trigger circuit detects that touch screen is touched, trigger circuit triggers touch-control
It detects chip and exports touch scanning signals to capacitance touching control electrode, since capacitance touching control electrode also serves as the common electrical for display
Pole is while realizing touch control detection and display function, timesharing driving method can be used, that is, enters the display touch-control timesharing stage
One frame time can be divided into two stages, respectively touch-control in this stage by (display touch separation stage)
Stage and display stage, wherein in the touch-control stage, touch detection chip is to capacitance touching control electrode output touch scanning signals with reality
The detection of existing touch location, enters the display stage after the completion of touch-control stage, at this point, touch detection chip is not to capacitance touching control electricity
Pole exports touch scanning signals, and capacitance touching control electrode is used as public electrode to realize display function, in display touch-control timesharing rank
Each frame time in section repeats above-mentioned two stage, to realize touch control detection and display function simultaneously；
In addition, in the display touch-control timesharing stage, the detection signal and touch detection of the detection chip output in trigger circuit
The touch scanning signals of chip output can synchronize (i.e. the synchronous driving of the two), to reduce the conductive layer in trigger circuit to capacitor
Touch control electrode generates additional load (loading)；
In addition, after trigger circuit triggers touch detection chip exports touch scanning signals to capacitance touching control electrode, if
Do not detect that touch screen is touched within a preset time period, then trigger circuit can trigger touch detection chip and stop to capacitor
Touch control electrode exports touch scanning signals, to achieve the effect that power saving；
Preferably, the conductive layer in the trigger circuit can be identical material with pixel electrode layer and same layer is arranged, i.e.,
Conductive layer in trigger circuit can be made simultaneously when making pixel electrode layer, to reduce the composition work of display device
Skill number.
In addition, touch screen therein further includes fingerprint recognition circuit in the display device that embodiment of the present invention provides,
Fingerprint recognition circuit realizes the detection of finger print information using light sensitivity principles comprising several finger print informations for identification it is photosensitive
Touch-control module；
The display device further includes control circuit, and the control circuit is used for the control when receiving finger scan order
The frame picture refreshing frequency (showing scan frequency) of the display device is reduced to second frequency by first frequency, and works as institute
The frame picture refreshing frequency for stating display device, which is reduced to control the fingerprint recognition circuit after second frequency, carries out fingerprint recognition；
When receiving finger scan order, by control circuit by the frame picture refreshing frequency of display device by the first frequency
Rate is reduced to second frequency, lengthens a frame time of display device, so as to realize finger scan frequency compared with prior art
The reduction (i.e. the extension of fingerprint scan phase time in a frame time) of rate；
Referring to fig. 4, after detecting finger scan order in the touch-control stage, control circuit controls the frame picture of display device
Refreshing frequency reduces, and to extend the time of one frame of display device, then the portion of time of the frame time after extension is carried out
Display scanning (showing the stage), the remainder time progress finger scan of the frame time after extension (refers to again later
Line scan phase), for example, the time of multiframe picture can be merged by reducing the frame picture refreshing frequency of display device
It, can be by a portion time (such as the times of several frames before merging) as aobvious in a frame time after merging for a frame
Show that the stage carries out display scanning, carries out finger scan for the remainder time as the finger scan stage, such light source is more steady
Determine in situation, relatively stable finger print information can be read in time more plentiful situation, after the completion of finger print information identification,
The frame picture refreshing frequency of display device can be become first frequency from second frequency again by control circuit, with realize normal display and
Touch-control.
For example, in the touch-control stage, when entering software interface, user clicks payment button during mobile payment
Afterwards, the frame picture refreshing frequency of display device can be reduced to 30HZ by 60HZ by control circuit, and display sweep time lengthens, then
The finger scan stage is carried out, carries out normal display and touch-control stage after the completion of finger print information identification, in above process, due to
One frame time of display device extends, and can realize the reduction of finger scan frequency compared with prior art in this way, is conducive to accumulation
The increase of data, is conducive to signal-obtaining.
The display device that embodiment of the present invention provides detects whether touch screen is touched by trigger circuit, is touching
In the case that screen is not touched, the touch detection chip in capacitance touching control circuit can not export touch-control to capacitance touching control electrode and sweep
Signal is retouched, touch detection chip is then triggered when trigger circuit detects that touch screen is touched to capacitance touching control electrode and exports touch-control
Scanning signal, to achieve the purpose that power saving, in addition, controlling display dress when receiving finger scan order by control circuit
The frame picture refreshing frequency set is reduced to second frequency by first frequency, can be conducive to the reading of finger print information, realizes display
The optimization of device.
In addition, embodiment of the present invention additionally provides a kind of driving method of display device, the display device includes touching
Touch screen, the touch screen includes capacitance touching control circuit, the capacitance touching control circuit include several capacitance touching control electrodes and with institute
State the connected touch detection chip of capacitance touching control electrode, wherein the driving method includes:
Detection circuit detects whether the touch screen is touched, the detection electricity when detecting that the touch screen is touched
It triggers the touch detection chip and exports touch scanning signals to the capacitance touching control electrode in road.
Wherein, the touch screen further includes fingerprint recognition circuit, the fingerprint recognition circuit include several for identification
The photosensitive touch-control module of finger print information, the driving method further include:
Control circuit is receiving the frame picture refreshing frequency that the display device is controlled when finger scan order by first
Frequency is reduced to second frequency；
Control circuit controls the fingerprint and knows after the frame picture refreshing frequency of the display device is reduced to second frequency
Other circuit carries out fingerprint recognition.
The above embodiments are only used to illustrate the present invention, and not limitation of the present invention, in relation to the common of technical field
Technical staff can also make a variety of changes and modification without departing from the spirit and scope of the present invention, therefore all
Equivalent technical solution also belongs to scope of the invention, and scope of patent protection of the invention should be defined by the claims.
Claims (7)
1. a kind of touch screen, including capacitance touching control circuit, the capacitance touching control circuit include several capacitance touching control electrodes and with
The connected touch detection chip of the capacitance touching control electrode, which is characterized in that the touch screen further includes trigger circuit, the touching
Power Generation Road is used to detect whether the touch screen is touched, and the touch-control is triggered when detecting that the touch screen is touched
It detects chip and exports touch scanning signals to the capacitance touching control electrode；
The trigger circuit includes detection chip and conductive layer, and the detection chip is used to apply detection letter to the conductive layer
Number, and judge whether the touch screen is touched according to the feedback signal of the conductive layer；
The conductive layer is netted, and the aperture position on the conductive layer is arranged in the capacitance touching control electrode.
2. a kind of display device, including touch screen, the touch screen includes capacitance touching control circuit, and the capacitance touching control circuit includes
Several capacitance touching control electrodes and the touch detection chip being connected with the capacitance touching control electrode, which is characterized in that the touch
Screen further includes trigger circuit, and the trigger circuit is used to detect whether the touch screen is touched, and works as and detect the touching
It touches and triggers the touch detection chip when screen is touched to capacitance touching control electrode output touch scanning signals；
The trigger circuit includes detection chip and conductive layer, and the detection chip is used to apply detection letter to the conductive layer
Number, and judge whether the touch screen is touched according to the feedback signal of the conductive layer；
The conductive layer is netted, and the aperture position on the conductive layer is arranged in the capacitance touching control electrode.
3. display device according to claim 2, which is characterized in that further include common electrode layer, the pixel for display
Electrode layer and liquid crystal layer.
4. display device according to claim 3, which is characterized in that the common electrode layer is multiplexed with several capacitors
Touch control electrode.
5. display device according to claim 3, which is characterized in that the conductive layer is identical with the pixel electrode layer
Material and same layer setting.
6. according to any display device of claim 2-5, which is characterized in that the touch screen further includes fingerprint recognition electricity
Road, the fingerprint recognition circuit include the photosensitive touch-control module of several finger print informations for identification；
The display device further includes control circuit, and the control circuit is used for when receiving finger scan order described in control
The frame picture refreshing frequency of display device is reduced to second frequency, and the frame picture brush when the display device by first frequency
New frequency controls the fingerprint recognition circuit progress fingerprint recognition after being reduced to second frequency.
7. a kind of driving method of display device, the display device include touch screen, the touch screen includes capacitance touching control electricity
Road, the capacitance touching control circuit include several capacitance touching control electrodes and the touch detection core that is connected with the capacitance touching control electrode
Piece, which is characterized in that the driving method includes:
Detection circuit detects whether the touch screen is touched, the detection circuit touching when detecting that the touch screen is touched
It sends out touch detection chip described and exports touch scanning signals to the capacitance touching control electrode；
The touch screen further includes fingerprint recognition circuit, and the fingerprint recognition circuit includes several finger print informations for identification
Photosensitive touch-control module, the driving method further include:
Control circuit is receiving the frame picture refreshing frequency that the display device is controlled when finger scan order by first frequency
It is reduced to second frequency；
Control circuit controls the fingerprint recognition electricity after frame picture refreshing frequency of the display device is reduced to second frequency
Road carries out fingerprint recognition.
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| EP3605293A1 (en) * | 2018-08-02 | 2020-02-05 | Samsung Display Co., Ltd. | Display device |
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| CN107943350A (en) * | 2018-01-16 | 2018-04-20 | 京东方科技集团股份有限公司 | A kind of touch-control display panel and its touch-control driving method |
| CN108960118B (en) * | 2018-06-28 | 2021-08-20 | 厦门天马微电子有限公司 | Capacitive fingerprint identification method, display panel and display device |
| KR102656237B1 (en) * | 2018-09-21 | 2024-04-09 | 엘지디스플레이 주식회사 | Moving fingerprint recognition method and apparatus using display |
| WO2020186481A1 (en) * | 2019-03-20 | 2020-09-24 | 深圳市汇顶科技股份有限公司 | Fingerprint collection method and system, and electronic device |
| CN110796983B (en) * | 2019-11-13 | 2021-06-11 | 厦门天马微电子有限公司 | Display device and driving method thereof |
| CN113689831A (en) * | 2020-05-15 | 2021-11-23 | 鸿富锦精密工业（深圳）有限公司 | Driving method and display device |
| CN112580466B (en) * | 2020-12-09 | 2024-09-13 | 京东方科技集团股份有限公司 | Display device and driving method thereof |
| CN112882615B (en) * | 2021-01-14 | 2022-09-09 | 深圳市华星光电半导体显示技术有限公司 | Display panel, driving method thereof and display device |
| CN114201078B (en) * | 2022-02-18 | 2022-04-22 | 深圳贝特莱电子科技股份有限公司 | Touch device, equipment and method for improving LED display performance |
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