CN108922464A - Liquid crystal display device and its scanning detection method - Google Patents
Liquid crystal display device and its scanning detection method Download PDFInfo
- Publication number
- CN108922464A CN108922464A CN201810907901.7A CN201810907901A CN108922464A CN 108922464 A CN108922464 A CN 108922464A CN 201810907901 A CN201810907901 A CN 201810907901A CN 108922464 A CN108922464 A CN 108922464A
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- Prior art keywords
- grid
- scanning
- amorphous silicon
- liquid crystal
- touch control
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
-
- 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
- G06F3/0412—Digitisers structurally integrated in a display
-
- 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
-
- 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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3674—Details of drivers for scan electrodes
Abstract
Present invention discloses a kind of liquid crystal display device and its scanning detection methods, solve the influence that scanning gate signal rising edge and failing edge scan touch control detection by a kind of Scanning Detction mode of timesharing sequence.A kind of mode includes：Touch control detection scanning at least once is inserted among the grid scanning of the liquid crystal display device.The function of integrating ASG, CTP in liquid crystal cell may be implemented in the above manner, avoid the mutual disturbance between signal, ensure that the sensitivity and resolution ratio of touch control detection, therefore thickness, the border width of entire liquid crystal display panel can obtain optimization and improve.Meanwhile the present invention does not increase additional hardware and technique yet, will not cause adverse effect to cost and yield.
Description
Technical field
The present invention relates to liquid crystal display device technical fields, more particularly to a kind of driving of integrated panel and capacitance touching control
Plane conversion (IPS) liquid crystal display device and its scanning detection method.
Background technique
In existing mobile display device, liquid crystal display panel is more and more integrated with touch function.Light, ultra-thin, visual angle
Good, the sensitive trend developed at present mobile communication equipment of touch-control.
CTP is the abbreviation of capacitance touch screen, be capacitor by being formed between finger and touch pad electrode with touch away from
From variation and change, eventually lead to monitor charge punching put determine touch location touch-control system.Present many CTP are produced
Product are plug-in touch-control systems, i.e., CTP touch screen are attached on LCD screen, sometimes mutual for shielded signal between the two
Interference will also add indium tin oxide (ITO) shielded layer.
With the organization plan of present plug-in capacitor screen, 4 sheet glass are at least needed：2 sheet glass completion liquid crystal display, 1
Sheet glass makes capacitance touch screen electrode, and 1 sheet glass makes breakage-proof pressing glass (Cover Lens).If between in addition usually
The ITO shield layer of addition, excessive interface layer will be greatly reduced the transmitance of light, lead to display device brightness, power save properties
Reduction.Meanwhile 4 layers of glass do not meet the thinned demand of present mobile communication device but also the thickness of mould group greatly increases.
In addition, CTP is bonded mode due to binding yield problem (e.g., bubble, Mura, frangible etc.), but also manufacturing cost greatly increases.
Therefore, exploitation is integrated with the liquid crystal display device of touch function, can greatly promote performance and yield.
However, as shown in Figure 1, if CTP is directly produced on color film side, driving liquid due to detection mode
The process of crystalline substance screen can form electromagnetic interference to capacitance plate, to generate noise (Noise), influence the detection for touch, formed
The case where wrong report point.Therefore scanning and detection mode must be optimized.Furthermore, it is contemplated that border width and liquid crystal surface
The problems such as thickness of plate, needs to redesign whole system and improved, and meets the use demand of its display and touch-control.
Summary of the invention
In view of this, the present invention provides a kind of liquid crystal display device and its scanning detection method, to solve touch control detection
The technical issues of wrong report point.
In order to solve the above technical problems, the present invention provides a kind of scanning detection method of liquid crystal display device, including：Institute
It states and is inserted into touch control detection scanning at least once among the grid scanning of liquid crystal display device.
Further, touch control detection scanning is inserted into after the grid end of scan of each frame at least once for the insertion.
Further, touch control detection scanning at least once is inserted among the grid scanning of each frame.
Further, being inserted into the mode that touch control detection scans at least once among the grid scanning of each frame is：If every
After dry row grid scanning, insertion touch control detection scanning, until completing frame grid scanning.
Further, when the sweep length of several row grid scanning reaches 3mm-6mm, insertion touch control detection scanning.
The present invention separately provides a kind of liquid crystal display device, including：Multistage grid drive amorphous silicon circuit, successively cascade, and respond
One clock signal or inverted clock signal, successively to activate the grid line corresponding to it, wherein first order grid driving amorphous silicon electricity
The road lower work of beginning trigger signal driving together, other grade of grid driving amorphous silicon circuit is successively in upper level grid driving amorphous silicon electricity
It works under the driving of the output signal on road；Touch control unit couples the start trigger signal and afterbody grid driving amorphous silicon
Circuit, and examined using the final grid output signal of the start trigger signal and afterbody grid driving amorphous silicon circuit as touch-control
Survey the trigger signal of the end of scan and beginning.
Further, the final grid output signal of the afterbody grid driving amorphous silicon circuit is that the grid of vitual stage scan
Signal.
The present invention also provides a kind of liquid crystal display devices, including：Multistage grid drive amorphous silicon circuit, successively cascade, and respond
One clock signal or inverted clock signal, successively to activate the grid line corresponding to it, wherein first order grid driving amorphous silicon electricity
The road lower work of beginning trigger signal driving together, other grade of grid driving amorphous silicon circuit is successively in upper level grid driving amorphous silicon electricity
It works under the driving of the output signal on road；Touch control unit is inserted into touch control detection at least once among the grid scanning of each frame and sweeps
It retouches, is couple to the corresponding grid driving amorphous silicon circuit in insertion position, and drive amorphous silicon circuit with the grid of corresponding at least two-stage
Grid output signal as touch control detection scanning start with terminate trigger signal.
Further, touch control detection scanning beginning with terminate trigger signal at least one for vitual stage grid scan believe
Number.
Further, the touch control unit is coupled to grid driving amorphous silicon electricity every several grades of grid driving amorphous silicon circuits
Road, and start and terminate as touch control detection scanning using the grid output signal of the grid driving amorphous silicon circuit of corresponding at least two-stage
Trigger signal.
Further, the touch control unit is coupled to grid driving amorphous silicon circuit every the grid sweep length of 3mm-6mm.
As it can be seen that the present invention realizes the function of integrating ASG, CTP in liquid crystal cell, avoids letter by timing separation scheme
Mutual disturbance between number, ensure that the sensitivity and resolution ratio of touch control detection, therefore entire liquid crystal display panel (function containing TP)
Thickness, border width, which can obtain optimization, to be improved.Meanwhile the present invention does not increase additional hardware and technique yet, will not at
This and yield cause adverse effect.
Detailed description of the invention
Fig. 1 is the waveform diagram of the scanning gate signal of a liquid crystal display panel, noise signal and touch control detection scanning signal；
Fig. 2 is a kind of scanning detection method of liquid crystal display device provided by the embodiment of the present invention one；
Fig. 3 is a kind of structural schematic diagram of liquid crystal display device；
Fig. 4 is a kind of operation principle schematic diagram of liquid crystal display device provided by the embodiment of the present invention one；
Fig. 5 is a kind of scanning detection method of liquid crystal display device provided by the embodiment of the present invention two；
Fig. 6 is a kind of operation principle schematic diagram of liquid crystal display device provided by the embodiment of the present invention two.
Specific embodiment
To make the foregoing features and advantages of the present invention clearer and more comprehensible, exemplary embodiment is cited below particularly, and cooperates attached
Figure, is described in detail below.
Often there is the case where wrong report point in touch control detection in the existing liquid crystal display device for being integrated with touch function.
Concrete reason is referring to FIG. 1, and be described as follows：
As shown in Figure 1, the rising edge and failing edge of the scanning gate signal (Gate signal as shown in the figure) of liquid crystal display panel are non-
Bigger change (changing 25V within usual 1 μ s) occurs for voltage difference in the often short time, due to capacitive coupling and panel charge and discharge
The influence of electric energy power, the variation of current potential will cause change (the especially electricity of public electrode (Common) of other current potentials of panel
Position), and thereby result in a series of noise (Noise) interference.Since touch control detection (is herein the touch of capacitance touch screen CTP
Detection) it is to determine that the modes such as charge charge and discharge are realized by potential difference, so the disturbance of public electrode level will cause touch-control spy
The wrong report point of survey.
The present invention considers the presence of problem above, in order to avoid scanning gate signal rising edge and failing edge examine touch-control
The influence for surveying scanning, solves the above technical problem using a kind of Scanning Detction mode of timesharing sequence.It specifically please refers to following
Embodiment.It should be noted that touch control detection scanning is in following embodiment with the detection scanning of capacitance touch screen (CTP)
Example, but the present invention is not limited thereto, scanning detection method of the invention can be used in the Scanning Detction of other touch screens.
Embodiment one：
Referring to FIG. 2, it is a kind of scanning detection method of liquid crystal display device provided by the embodiment of the present invention one.Its
Touch control detection scanning (CTP detected) is carried out after the grid scanning (gate scan) of each frame, i.e. the grid in each hardwood
One section of timing is vacated after scanning to carry out touch control detection scanning.
The implementation method of this method in liquid crystal display device is specifically described below with reference to Fig. 3 and Fig. 4.
It should be noted that integrated grid driving amorphous silicon circuit (ASG) is important choosing for the design requirement of narrow frame
It selects.Usual ASG circuit is exported using clock signal CK, inverted clock signal CKB, start trigger signal STV, upper level grid
The rising edges of the level signals such as signal Gaten, failing edge come modulate high level voltage VGH, low level voltage VGL make output this
Grade grid sweep waveform.Wherein, STV is start trigger signal, and which determine the work of the ASG circuit of the first order, then pass through again
Circuit level-one level-one hands on.Since amorphous silicon electron mobility is relatively low, it is therefore desirable to which the film of very big breadth length ratio is brilliant
Body pipe (TFT) makes afterbody output circuit, and specific gravity is maximum in the panel area that ASG circuit occupies.
Firstly, as shown in figure 3, it is a kind of structural schematic diagram of liquid crystal display device.As shown, the liquid crystal display fills
It sets including multistage grid driving amorphous silicon circuit (ASG) 100, display unit 200 and touch control unit 300.Wherein, multistage grid driving is non-
Crystal silicon circuit successively cascades, and responds a clock signal CK or inverted clock signal CKB, successively to activate the grid corresponding to it
Line, wherein first order grid driving amorphous silicon circuit works under the driving of start trigger signal STV, other grade of grid drive amorphous silicon
Circuit successively works under the driving of the output signal of upper level grid driving amorphous silicon circuit；The coupling starting touching of touch control unit 300
Signalling STV and afterbody grid drive amorphous silicon circuit, and using start trigger signal STV as the touch control detection end of scan
Trigger signal, the triggering that the grid output signal final using afterbody grid driving amorphous silicon circuit starts as touch control detection scanning
Signal.
In addition, display unit 200 frequently includes a plurality of gate lines, data lines and multiple pixels, each pixel is by film
Transistor and liquid crystal capacitor are constituted, and data drive circuit outputs the data signal to data line, and ASG circuit believes gate driving
Number output is to grid line.Due to the technology that this is well known to those skilled in the art, therefore do not describe in detail herein.
Below with reference to Fig. 4, the working principle of the above liquid crystal display device is described in detail.It is originated when integrated circuit (IC) is exported
When trigger signal STV, touch control unit 300 receives STV signal, and stops the scanning for touch-control when the STV signal is effective,
And ASG circuit is started to work, and exports scanning gate signal step by step, to the last level-one output gate signal is effectively (for example, for high electricity
It is flat).Touch control procedure in afterbody grid output signal triggering touch control unit 300 starts to be scanned, until next hardwood is opened
IC output STV signal is effective when the beginning, and so on.It is achieved that the function of the scanning of timesharing sequence grid and touch control detection scanning as a result,.
Preferably, the final grid output signal of afterbody ASG circuit is the scanning gate signal of vitual stage (Dummy).This
It is the scanning gate signal because of Dummy grades and is not input in liquid crystal display panel, the feelings of overlap capacitance coupled level is not present
Condition, rising edge, failing edge will not scan touch control detection and impact.Meanwhile as Dummy grades of ASG circuit due to
Production input is not needed, it is only necessary to be to export Dummy scanning signal, therefore do not need very for afterbody ASG circuit design
The TFT circuit of big breadth length ratio, therefore many panel areas can be saved as Dummy grades of ASG, border width will not be caused
Adverse effect.
Embodiment two：
Referring to FIG. 5, it is a kind of scanning detection method of liquid crystal display device provided by the embodiment of the present invention two.Its
Touch control detection scanning (CTP detected) at least once is inserted among the grid scanning (gate scan) of each frame.Usually insert
Entering mode is：After every several row grid scannings, insertion touch control detection scanning, until completing frame grid scanning.Here, being touched to insertion
Control the number scanned with no restrictions, those skilled in the art can be set as needed.However pass through experiment and analysis, preferably,
When the sweep length of several row grid scanning reaches 5mm, insertion touch control detection scanning.For example, corresponding touch-control spacing, general 5mm
30 row grid scanning left and right is corresponded to, insertion touch-control scanning carries out grid scanning, and so on until the scanning of the whole screen of completion again after the completion
And detection.Meanwhile by inventor's repetition test, finds when the sweep length that several row grid scan is between 3mm-6mm, insert
Entering touch control detection scanning may be implemented good touch control detection effect.
The implementation method of this method in liquid crystal display device is specifically described below with reference to Fig. 3, Fig. 6.
The liquid crystal display device includes multistage ASG circuit 100, display unit (not shown) and touch control unit 400.Its
In, multistage ASG circuit successively cascades, and a clock signal CK or inverted clock signal CKB is responded, successively to activate corresponding to it
Grid line, wherein first order grid driving amorphous silicon circuit works under the driving of start trigger signal STV, other grade of grid driving is non-
Crystal silicon circuit successively works under the driving of the output signal of upper level grid driving amorphous silicon circuit.Its it is different from embodiment one it
It is in the setting and working principle in touch control unit 400.Such as Fig. 6, which is inserted among the grid scanning of each frame
Touch control detection scans at least once, is couple to the corresponding level-one grid driving amorphous silicon circuit in insertion position, and drive with this grade of grid
The trigger signal that the starting grid output signal of dynamic amorphous silicon circuit starts as touch control detection scanning, and needing to terminate touch-control inspection
When surveying scanning, believed using the triggering of grid output signal as the touch control detection end of scan of the grid driving amorphous silicon circuit of respective stages
Number.In general, the corresponding 3-5 grades of grid of touch control detection scanning drive amorphous silicon circuit.As it can be seen that the present embodiment is exported using the grid of respective stages
Signal realizes grid driving scanning and touch-control scanning sequence point as starting touch-control scanning and terminating the trigger signal of touch-control scanning
From purpose.
Preferably, realizing above functions also with the Dummy grade scanning gate signal of ASG circuit, that is, needing to be inserted into
It is that output Dummy scans trigger signal by this grade of ASG circuit design, using the triggering scanned as touch control detection when touch control detection
Signal, during touch control detection, corresponding several Dummy signals of several grades of ASG circuit outputs, when needing to terminate touching
When control detection, this grade of ASG circuit design is output Dummy end of scan signal, to terminate touch control detection scanning, and in next stage
ASG circuit starts grid scanning, the Dummy signal of design output herein, Dummy scanning trigger signal and Dummy end of scan signal
The advantages of as in the first embodiment, details are not described herein.
It can be seen from the figure that touch control unit couples grid driving amorphous silicon electricity every several grades of grid driving amorphous silicon circuits
Road, and the touching for starting and terminating as touch control detection scanning using the grid output signal of the respective stages of its grid driving amorphous silicon circuit
It signals.Preferably, touch control unit, which couples a grid every the grid sweep length of 5mm, drives amorphous silicon circuit, it is preferable that touch-control list
Member is coupled to grid driving amorphous silicon circuit every the grid sweep length of 3mm-6mm.
Embodiment one vacates one section of timing after the grid scanning of each hardwood to carry out touch control detection scanning.This mode letter
Single requirement easy to accomplish, especially not additional to ASG circuit design may be implemented to reduce cost, and improve product yield
Purpose.Embodiment carries out grid scanning, and so on directly second is that the insertion touch control detection scanning after the scanning of several row grid again after the completion
To the scanning and detection for completing whole screen.This method can greatly improve panel touch-control response speed and resolution ratio.
It should be noted that can also be combined for two schemes the present invention provides two kinds of timing separation schemes
It is designed.Meanwhile the design can also be used in the separation of plug-in capacitor screen timing, be seriously affected used in outer hanging panel by grid driving
The case where.
In conclusion the embodiment of the invention provides the liquid crystal that CTP, ASG technology of combination production high-quality has touch function
Panel and driving integration technology.Avoid liquid crystal display panel and touch panel as caused by being produced in liquid crystal cell big parasitic capacitance
The noise that especially grid scanning rising edge, failing edge are coupled out is interfered with each other not increase using the existing signal of ASG circuit
Under the premise of stiffened part block, the differentiation in timing is carried out to scanning, has avoided mutual interference.Mainly for sequence circuit
Logic and system combination are designed, and Effect on Detecting is optimized.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of this field
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement is both fallen in the range of claimed invention.The present invention claims protection scope by appended claims and its
Equivalent defines.
Claims (6)
1. a kind of liquid crystal display device, characterized in that including：
Multistage grid drive amorphous silicon circuit, successively cascade, and a clock signal or inverted clock signal are responded, successively to activate its institute
Corresponding grid line, wherein the lower work of beginning trigger signal driving, other grade of grid drive first order grid driving amorphous silicon circuit together
Dynamic amorphous silicon circuit successively works under the driving of the output signal of upper level grid driving amorphous silicon circuit；
Touch control unit couples the start trigger signal and afterbody grid driving amorphous silicon circuit, and with the start trigger
Touching of the grid output signal that signal and afterbody grid drive amorphous silicon circuit final as the touch control detection end of scan and beginning
It signals.
2. liquid crystal display device according to claim 1, characterized in that the afterbody grid driving amorphous silicon circuit is most
Whole grid output signal is the scanning gate signal of vitual stage.
3. a kind of liquid crystal display device, characterized in that including：
Multistage grid drive amorphous silicon circuit, successively cascade, and a clock signal or inverted clock signal are responded, successively to activate its institute
Corresponding grid line, wherein the lower work of beginning trigger signal driving, other grade of grid drive first order grid driving amorphous silicon circuit together
Dynamic amorphous silicon circuit successively works under the driving of the output signal of upper level grid driving amorphous silicon circuit；
Touch control unit is inserted into touch control detection scanning at least once among the grid scanning of each frame, is couple to insertion position pair
The grid driving amorphous silicon circuit answered, and examined using the grid output signal of the grid driving amorphous silicon circuit of corresponding at least two-stage as touch-control
Survey the trigger signal that scanning starts with terminates.
4. liquid crystal display device according to claim 3, characterized in that the beginning of touch control detection scanning and the triggering terminated
Signal at least one be vitual stage scanning gate signal.
5. liquid crystal display device according to claim 3, characterized in that the touch control unit is non-every several grades of grid drivings
Crystal silicon circuit is coupled to grid driving amorphous silicon circuit, and with the grid output signal of the grid driving amorphous silicon circuit of corresponding at least two-stage
Start the trigger signal with end as touch control detection scanning.
6. the scanning detection method of liquid crystal display device according to claim 5, characterized in that the touch control unit every
The grid sweep length of 3mm-6mm is coupled to grid driving amorphous silicon circuit.
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| CN201810907901.7A CN108922464A (en) | 2018-08-10 | 2018-08-10 | Liquid crystal display device and its scanning detection method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0713526A (en) * | 1993-06-29 | 1995-01-17 | Asahi Glass Co Ltd | Liquid crystal display device and driving method therefor |
| CN101755298A (en) * | 2007-06-12 | 2010-06-23 | 夏普株式会社 | Liquid crystal display device, scan signal drive device, liquid crystal display device drive method, scan signal drive method, and television receiver |
| CN101971242A (en) * | 2008-03-19 | 2011-02-09 | 夏普株式会社 | Display panel driving circuit, liquid crystal display device, shift register, liquid crystal panel, and display device driving method |
| CN102200857A (en) * | 2010-12-17 | 2011-09-28 | 友达光电股份有限公司 | Touch signal scanning frequency determining method of touch panel |
| CN103163666B (en) * | 2011-12-08 | 2015-08-26 | 上海天马微电子有限公司 | Liquid crystal indicator and scanning detection method thereof |
-
2018
- 2018-08-10 CN CN201810907901.7A patent/CN108922464A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0713526A (en) * | 1993-06-29 | 1995-01-17 | Asahi Glass Co Ltd | Liquid crystal display device and driving method therefor |
| CN101755298A (en) * | 2007-06-12 | 2010-06-23 | 夏普株式会社 | Liquid crystal display device, scan signal drive device, liquid crystal display device drive method, scan signal drive method, and television receiver |
| CN101971242A (en) * | 2008-03-19 | 2011-02-09 | 夏普株式会社 | Display panel driving circuit, liquid crystal display device, shift register, liquid crystal panel, and display device driving method |
| CN102200857A (en) * | 2010-12-17 | 2011-09-28 | 友达光电股份有限公司 | Touch signal scanning frequency determining method of touch panel |
| CN103163666B (en) * | 2011-12-08 | 2015-08-26 | 上海天马微电子有限公司 | Liquid crystal indicator and scanning detection method thereof |
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