CN107170416A - The driving method and drive circuit of a kind of LCDs - Google Patents
The driving method and drive circuit of a kind of LCDs Download PDFInfo
- Publication number
- CN107170416A CN107170416A CN201710363121.6A CN201710363121A CN107170416A CN 107170416 A CN107170416 A CN 107170416A CN 201710363121 A CN201710363121 A CN 201710363121A CN 107170416 A CN107170416 A CN 107170416A
- Authority
- CN
- China
- Prior art keywords
- voltage
- reset signal
- power source
- external power
- tft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a kind of driving method of LCDs.Judge whether external power source powers off by detecting the voltage level of the reset signal inputted by external power source, and when power is off to multi-strip scanning line while input drive signal, corresponding thin film transistor (TFT) is opened, then the data wire that thin film transistor (TFT) is connected is grounded, and discharges residual charge.By the above-mentioned means, the present invention can discharge the electric charge remained in pixel when external power source is powered off suddenly, it is to avoid the phenomenon of liquid crystal polarization occur.The invention also discloses a kind of drive circuit of LCDs.
Description
Technical field
The present invention relates to LCDs field, more particularly to a kind of driving method of LCDs and driving electricity
Road.
Background technology
In process of production, display module needs progress to light electrical measurement program to the display module of LCDs, for life
Producing line operate employee efficiency, light electrical measurement procedure operation it is complete after display module is powered off, next program in the short time
When waking up display module again, the problems such as screen flash and ghost are easily caused due to liquid crystal polarization.Also had in mobile phone terminal different
The situation of normal off electricity, such as, pull out battery under mobile phone normal operating conditions, force to restart, be likely to due to liquid crystal pole
Change causes the problems such as screen flash and ghost occurs in display screen.
Solve at present this because powering-off state is caused the problem of liquid crystal polarization causes screen flash, the method for use is in module
One button is set on factory's test fixture, first allows display module to enter dormancy, then carry out power operation, when walking dormancy flow and wanting
Between, operator will also carry out an action more, and it is also possible to can forget that this is operated.Do not have in this problem of mobile phone terminal
Good solution, only places and does not show for a period of time, allow liquid crystal to recover normal condition.
The content of the invention
, can be in external power source the present invention solves the technical problem of a kind of driving method of LCDs is provided
During power-off, the charge discharge remained in LCDs, when opening next time, is avoided that due to screen flash caused by liquid crystal polarization
And the problems such as ghost.
In order to solve the above technical problems, one aspect of the present invention is：A kind of drive of LCDs is provided
Dynamic method, including：Input voltage and reset signal that external power source is provided are received, wherein the reset signal is used to control
The LCDs is resetted and the voltage level of the reset signal declines when the external power source is powered off；Will be described
Input voltage is converted into the operating voltage needed for the LCDs, and detects the voltage level of the reset signal in real time；
When the voltage level for detecting the reset signal is less than default magnitude of voltage, based on the operating voltage to the liquid crystal
The multi-strip scanning line of display screen provides scanning drive signal simultaneously, to cause the thin film transistor (TFT) that the multi-strip scanning line is connected same
When turn on；Under the thin film transistor (TFT) conducting state, the data wire that the thin film transistor (TFT) is connected is grounded, and then to institute
The pixel corresponding to thin film transistor (TFT) is stated to be discharged.
Wherein, the operating voltage input voltage being converted into needed for the LCDs, and detecting in real time
The step of voltage level of the reset signal, includes：The operating voltage is applied to storage capacitance, to cause described outer
During portion's power cut-off, the decrease speed of the operating voltage is less than the decrease speed of the voltage level of the reset signal.
Wherein, the operating voltage input voltage being converted into needed for the LCDs, and detecting in real time
The step of voltage level of the reset signal, includes：The operating voltage is applied to storage capacitance, to cause described outer
During portion's power cut-off, the decrease speed of the operating voltage is less than the decrease speed of the voltage level of the reset signal.
Wherein, the capacitance of the storage capacitance is arranged so that complete in the pixel discharge corresponding to the thin film transistor (TFT)
Cheng Qian, the scanning drive signal is able to ensure that the thin film transistor (TFT) constant conduction.
Wherein, it is described when the voltage level for detecting the reset signal is less than default magnitude of voltage, based on the work
Make voltage to the multi-strip scanning line of the LCDs while the step of providing scanning drive signal includes：It is described when detecting
When the voltage level of reset signal is less than default magnitude of voltage, swept based on the operating voltage to the whole of the LCDs
Line is retouched while providing scanning drive signal.
In order to solve the above technical problems, another technical solution used in the present invention is：A kind of LCDs is provided
Drive circuit, including：Voltage conversion circuit, for receiving the input voltage that external power source is provided, and by the input voltage
It is converted into the operating voltage needed for the LCDs；Voltage detecting circuit, for receiving the reset that external power source is provided
Signal, and the voltage level of the reset signal is detected in real time, wherein the reset signal is used to control the LCDs
Resetted and the voltage level of the reset signal declines when the external power source is powered off；Scanner driver, when the electricity
When the voltage level of pressure detection electric circuit inspection to the reset signal is less than default magnitude of voltage, the scanner driver is based on institute
Operating voltage is stated to the multi-strip scanning line of the LCDs while providing scanning drive signal, to cause the multi-strip scanning
The thin film transistor (TFT) that line is connected is simultaneously turned on；Data driver, for inciting somebody to action described under the thin film transistor (TFT) conducting state
The data wire ground connection that thin film transistor (TFT) is connected, and then the pixel corresponding to the thin film transistor (TFT) is discharged.
Wherein, the drive circuit further comprises being arranged between the voltage conversion circuit and the scanner driver
Storage capacitance, to cause when the external power source is powered off, the decrease speed of the operating voltage is less than the reset signal
Voltage level decrease speed..
Wherein, the drive circuit further comprises being arranged between the external power source and the voltage conversion circuit
Storage capacitance, to cause when the external power source is powered off, the decrease speed of the input voltage is less than the reset signal
The decrease speed of voltage level..
Wherein, the capacitance of the storage capacitance is arranged so that complete in the pixel discharge corresponding to the thin film transistor (TFT)
Cheng Qian, the scanning drive signal is able to ensure that the thin film transistor (TFT) constant conduction.
Wherein, when the voltage level that the voltage detecting circuit detects the reset signal is less than default magnitude of voltage
When, the scanner driver provides scanning drive signal simultaneously to whole scan lines of the LCDs.
The beneficial effects of the invention are as follows：The situation of prior art is different from, the present invention is detected first to be inputted by external power source
The voltage of reset signal judge whether to start electric discharge, in electric discharge, to should the scan line of Timing driver be changed to input simultaneously
Drive signal, opens thin film transistor (TFT), then the data wire that thin film transistor (TFT) is connected is grounded, and is discharged residual charge, can be avoided
After unexpected power-off, the electric charge remained in pixel causes the phenomenon of liquid crystal polarization, and in starting up next time, there will be no residual
The phenomenon of shadow or splashette.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of first embodiment of the invention；
Fig. 2 is the circuit diagram of first embodiment of the invention；
Fig. 3 is the circuit diagram of second embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Referring to Fig. 1, Fig. 1 is the schematic flow sheet of first embodiment of the invention.Comprise the following steps：
Step 101：Input voltage and reset signal that external power source is provided are received, wherein the reset signal is used for
Control the LCDs to be resetted and the voltage level of the reset signal declines when the external power source is powered off.
External power source is used to there is provided reset signal, series display believe to LCDs drive circuit offer input voltage
Number wait multi-signal, maintain LCDs drive circuit normal work so that LCDs can normally be shown.
Wherein, reset signal is in high potential, and LCDs drive circuit just can normal work, LCDs ability
Normal display；When reset signal is in low potential, LCDs drive circuit will be stopped.In outside power cut-off,
The voltage level of the reset signal provided by external power source can decline therewith, and LCDs drive circuit can also stop work therewith
Make.
Step 102：The input voltage is converted into the operating voltage needed for the LCDs, and detects institute in real time
State the voltage level of reset signal.
In one embodiment, the operating voltage is applied to storage capacitance；
Storage capacitors are accessed in the output circuit of operating voltage, and one is stored when operating voltage is output to LCDs
Part electricity.When external power source is powered off suddenly, the electricity stored in storage capacitors can be discharged so that operating voltage can be delayed
It is slow to decline.
Electricity of the decrease speed less than reset signal for being sized so as to be sufficient so that operating voltage of the capacity of storage capacitors
Press the decrease speed of level.This is done to can corresponding to thin film transistor (TFT) pixel discharge complete before, turntable driving letter
Number it is able to ensure that the thin film transistor (TFT) constant conduction.
In another embodiment, storage capacitors can also be arranged on the input voltage output end of external power source, in outside
Power supply stores a part of electricity when providing voltage to LCDs drive circuit, when external power source is powered off suddenly, storage
The electricity stored in electric capacity can be discharged so that input voltage slowly declines, so that the operating voltage changed by input voltage
Also can slowly it decline.
Electricity of the decrease speed less than reset signal for being sized so as to be sufficient so that input voltage of the capacity of storage capacitors
The decrease speed of level is pressed, i.e., correspondingly causes the decrease speed of operating voltage to be less than the lower reduction of speed of the voltage level of reset signal
Degree.
Step 103：When the voltage level for detecting the reset signal is less than default magnitude of voltage, based on the work
Multi-strip scanning line from voltage to the LCDs simultaneously scanning drive signal is provided, with cause the multi-strip scanning line company
The thin film transistor (TFT) connect is simultaneously turned on.
In one embodiment, when the voltage level for detecting reset signal is less than default magnitude of voltage, based on work
Voltage provides scanning drive signal simultaneously to the multi-strip scanning line of LCDs.
In external power source normal power supply, LCDs drive circuit normal work, the turntable driving of scan line output
Signal should be that sequential export, i.e. scan line should be started successively.Preset when the voltage level for detecting reset signal is less than
Magnitude of voltage when, the multi-strip scanning line of LCDs is provided scanning drive signal simultaneously, and scan line will start simultaneously, then entirely
Portion's thin film transistor (TFT) is simultaneously turned on.
Step 104：Under the thin film transistor (TFT) conducting state, the data wire that the thin film transistor (TFT) is connected connects
Ground, and then the pixel corresponding to the thin film transistor (TFT) is discharged.
After whole thin film transistor (TFT)s are simultaneously turned on, it will be connected to the data wire ground connection of these thin film transistor (TFT)s, then it is thin
The electric charge remained in the corresponding pixel of film transistor will be discharged along ground path, be asked so as to effectively prevent liquid crystal polarization
The appearance of topic.
By foregoing description, the embodiment of the present invention is by detecting the height of the reset signal voltage provided by external power source
It is low, when reset signal magnitude of voltage is less than preset value, represent that external power source is powered off suddenly, will now be based on operating voltage to liquid crystal
Whole scan lines of display screen provide scanning drive signal simultaneously so that whole scan lines start simultaneously, allow whole film crystals
Pipe is simultaneously turned on, and the data wire that the thin film transistor (TFT) is connected is grounded, and then to the picture corresponding to the thin film transistor (TFT)
Element is discharged, then the electric charge remained in the corresponding pixel of thin film transistor (TFT) will be discharged along ground path, so that effectively
The appearance of liquid crystal polarization problem is avoided, when brightness liquid crystal display screen is put again, there will not be screen flash and ghost etc. to ask
Topic.
Referring to Fig. 2, Fig. 2 is the circuit diagram of first embodiment of the invention.
As shown in Fig. 2 LCDs drive circuit 20 includes voltage conversion circuit 21, voltage detecting circuit 22, data
Driver 23, scanner driver 24.External power source 10 is connected with voltage conversion circuit 21, and input is provided to voltage conversion circuit 21
The input voltage received is converted into the required operating voltage that worked for display screen 30 by voltage, voltage conversion circuit 21.
External power source 10 is connected that there is provided reset signal with voltage detecting circuit 22.The detection of voltage detecting circuit 22 is received
Reset signal magnitude of voltage, contrasted with the preset value that is stored in voltage detecting circuit 22.When detecting that what is received answer
When position signal voltage value is less than preset value, sends signal and notify scanner driver 24.Scanner driver 24 receives voltage detecting
After the signal that circuit 22 is sent, based on voltage conversion circuit 21 provide multi-strip scanning from operational voltage value to LCDs 30
Line 32 provides scanning drive signal simultaneously, and to cause, the corresponding thin film transistor (TFT) 331 of scan line 32 is turned on.When voltage detecting electricity
When road 22 detects that the reset signal magnitude of voltage received is less than preset value, while can send signal notifies data driver 23,
Data driver 23 upon receipt of a notification, the data that connect thin film transistor (TFT) 331 in the state of the conducting of thin film transistor (TFT) 331
Line 31 is grounded, and the place pixel 33 of thin film transistor (TFT) 331 is discharged.
Storage capacitors 40 are connected between voltage conversion circuit 21 and scanner driver 24.Storage capacitors 40 are in voltage conversion electricity
Road 21 stores electricity when providing operating voltage to scanner driver 24.When external power source 10 is powered off suddenly, electricity is discharged, is delayed
The speed that operating voltage declines.The size of storage capacitors 40 will cause the speed that operating voltage declines to be less than what reset signal declined
Speed.Before reset signal is minimized namely LCDs drive circuit 20 is stopped, data driver 23, scanning is driven
Dynamic device 24 can have the time to complete all required actions of electric discharge.
Referring to Fig. 3, Fig. 3 is the circuit diagram of second embodiment of the invention.As shown in figure 3, LCDs drives
Circuit 20 includes voltage conversion circuit 21, voltage detecting circuit 22, data driver 23, scanner driver 24.External power source 10
It is connected with voltage conversion circuit 21, input voltage is provided to voltage conversion circuit 21, voltage conversion circuit 21 is defeated by what is received
Enter voltage conversion into the required operating voltage that worked for display screen 30.The operation principle and purpose of above each several part all with Fig. 2
First embodiment it is substantially similar, this place is repeated no more.
Storage capacitors 50 are connected between external power source 10 and voltage conversion circuit 21.Storage capacitors 50 are in external power source 10
Electricity is stored when providing input voltage to voltage conversion circuit 21.When external power source 10 is powered off suddenly, electricity is discharged, is prolonged
The speed that slow input voltage declines, the speed so declined by the converted operating voltage of input voltage can also delay.Storage
The size of electric capacity 50 will cause the speed that input voltage declines to be less than the speed that reset signal declines, and be minimized in reset signal
Namely before LCDs drive circuit 20 is stopped, data driver 23, scanner driver 24 can have the time to complete all
Action needed for electric discharge.
By foregoing description, the present invention is converted to the input voltage that external power source is provided by voltage conversion circuit
Operating voltage, and operating voltage is supplied to scan drive circuit.Pass through answering that voltage detecting circuit inspection external power source is sent
Whether the voltage of position signal when the voltage of reset signal be less than preset value, starts discharge flow path in normal range (NR).Turntable driving
Circuit by should the scan line that starts of sequential input scanning drive signal simultaneously, while open whole thin film transistor (TFT)s, then will
The data wire ground connection of thin film transistor (TFT) connection, can discharge the electric charge remained in pixel, it is to avoid liquid crystal polarization problem, then
The problems such as secondary start there will not be screen flash and ghost.
The method that prior art needs to add the process of a step dormancy or screen is stood to a period of time is different from, this
Invention is by detecting the height of reset signal as the foundation for judging whether to start to discharge.In reset signal magnitude of voltage less than default
During value, whole scan lines of LCDs are allowed to start simultaneously at work, while opening whole thin film transistor (TFT)s.In film crystal
After pipe is fully open, the data wire for connecting thin film transistor (TFT) is all grounded, the electric charge of release residual within the pixel.In circuit
Storage capacitors are accessed, the speed that hold-off voltage declines provides the sufficient time to discharge flow path.The embodiment of the present invention can be effective
The appearance of liquid crystal polarization problem is avoided, when brightness liquid crystal display screen is put again, the problems such as there will not be screen flash and ghost.
Embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this
Equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, is included within the scope of the present invention.
Claims (10)
1. a kind of driving method of LCDs, it is characterised in that including：
Input voltage and reset signal that external power source is provided are received, wherein the reset signal is used to control the liquid crystal
Display screen is resetted and the voltage level of the reset signal declines when the external power source is powered off；
The input voltage is converted into the operating voltage needed for the LCDs, and detects the reset signal in real time
Voltage level；
When the voltage level for detecting the reset signal is less than default magnitude of voltage, based on the operating voltage to the liquid
The multi-strip scanning line of crystal display screen provides scanning drive signal simultaneously, to cause film crystal that the multi-strip scanning line is connected
Pipe is simultaneously turned on；
Under the thin film transistor (TFT) conducting state, the data wire that the thin film transistor (TFT) is connected is grounded, and then to described
Pixel corresponding to thin film transistor (TFT) is discharged.
2. according to the method described in claim 1, it is characterised in that described that the input voltage is converted into the liquid crystal display
Operating voltage needed for screen, and include the step of detect the voltage level of the reset signal in real time：
The operating voltage is applied to storage capacitance, to cause when the external power source is powered off, under the operating voltage
Reduction of speed degree is less than the decrease speed of the voltage level of the reset signal.
3. according to the method described in claim 1, it is characterised in that it is described receive input voltage that external power source provided and
The step of reset signal, includes：
The input voltage is applied to storage capacitance, to cause when the external power source is powered off, under the input voltage
Reduction of speed degree is less than the decrease speed of the voltage level of the reset signal.
4. according to the method in claim 2 or 3, it is characterised in that the capacitance of the storage capacitance is arranged so that
Before pixel discharge corresponding to the thin film transistor (TFT) is completed, the scanning drive signal is able to ensure that the thin film transistor (TFT) is held
Continuous conducting.
5. according to the method described in claim 1, it is characterised in that described when the voltage level for detecting the reset signal is low
When default magnitude of voltage, turntable driving is provided simultaneously to the multi-strip scanning line of the LCDs based on the operating voltage
The step of signal, includes：
When the voltage level for detecting the reset signal is less than default magnitude of voltage, based on the operating voltage to the liquid
Whole scan lines of crystal display screen provide scanning drive signal simultaneously.
6. a kind of drive circuit of LCDs, it is characterised in that including：
Voltage conversion circuit, for receiving the input voltage that external power source is provided, and the input voltage is converted into described
Operating voltage needed for LCDs；
Voltage detecting circuit, for receiving the reset signal that external power source is provided, and detects the electricity of the reset signal in real time
Level is pressed, wherein the reset signal is used to control the LCDs to be resetted and in external power source power-off when institute
The voltage level for stating reset signal declines；
Scanner driver, when the voltage level that the voltage detecting circuit detects the reset signal is less than default magnitude of voltage
When, the scanner driver provides turntable driving simultaneously based on the operating voltage to the multi-strip scanning line of the LCDs
Signal, is simultaneously turned on the thin film transistor (TFT) for causing the multi-strip scanning line to be connected；
Data driver, the data wire for being connected the thin film transistor (TFT) under the thin film transistor (TFT) conducting state connects
Ground, and then the pixel corresponding to the thin film transistor (TFT) is discharged.
7. drive circuit according to claim 6, it is characterised in that the drive circuit further comprises being arranged at described
Storage capacitance between voltage conversion circuit and the scanner driver, to cause when the external power source is powered off, the work
Make decrease speed of the decrease speed less than the voltage level of the reset signal of voltage.
8. drive circuit according to claim 6, it is characterised in that the drive circuit further comprises being arranged at described
Storage capacitance between external power source and the voltage conversion circuit, to cause when the external power source is powered off, the input
The decrease speed of voltage is less than the decrease speed of the voltage level of the reset signal.
9. the drive circuit according to claim 7 or 8, it is characterised in that the capacitance of the storage capacitance is arranged to make
Obtain before the pixel discharge corresponding to the thin film transistor (TFT) is completed, the scanning drive signal is able to ensure that the film crystal
Pipe constant conduction.
10. drive circuit according to claim 6, it is characterised in that when the voltage detecting circuit detect it is described multiple
Position signal voltage level be less than default magnitude of voltage when, whole scan lines from the scanner driver to the LCDs
Scanning drive signal is provided simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710363121.6A CN107170416A (en) | 2017-05-22 | 2017-05-22 | The driving method and drive circuit of a kind of LCDs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710363121.6A CN107170416A (en) | 2017-05-22 | 2017-05-22 | The driving method and drive circuit of a kind of LCDs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107170416A true CN107170416A (en) | 2017-09-15 |
Family
ID=59815478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710363121.6A Withdrawn CN107170416A (en) | 2017-05-22 | 2017-05-22 | The driving method and drive circuit of a kind of LCDs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107170416A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1487494A (en) * | 2002-07-12 | 2004-04-07 | ���ṫ˾ | Liquid crystal display equipment, method for controlling the same equipment and portable terminal |
| CN1870114A (en) * | 2005-05-28 | 2006-11-29 | 群康科技(深圳)有限公司 | Discharging circuit and liquid crystal panel drive circuit using the discharging circuit |
| CN101383129A (en) * | 2007-09-07 | 2009-03-11 | 北京京东方光电科技有限公司 | Power supply switch controlling method for LCD and device thereof |
| CN101556776A (en) * | 2008-04-10 | 2009-10-14 | 北京京东方光电科技有限公司 | Driving circuit for realizing rapid discharge of pixel thin film transistor |
| CN105976776A (en) * | 2016-06-21 | 2016-09-28 | 深圳天珑无线科技有限公司 | Liquid crystal display screen discharging method, liquid crystal display screen and driving chip thereof |
-
2017
- 2017-05-22 CN CN201710363121.6A patent/CN107170416A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1487494A (en) * | 2002-07-12 | 2004-04-07 | ���ṫ˾ | Liquid crystal display equipment, method for controlling the same equipment and portable terminal |
| CN1870114A (en) * | 2005-05-28 | 2006-11-29 | 群康科技(深圳)有限公司 | Discharging circuit and liquid crystal panel drive circuit using the discharging circuit |
| CN101383129A (en) * | 2007-09-07 | 2009-03-11 | 北京京东方光电科技有限公司 | Power supply switch controlling method for LCD and device thereof |
| CN101556776A (en) * | 2008-04-10 | 2009-10-14 | 北京京东方光电科技有限公司 | Driving circuit for realizing rapid discharge of pixel thin film transistor |
| CN105976776A (en) * | 2016-06-21 | 2016-09-28 | 深圳天珑无线科技有限公司 | Liquid crystal display screen discharging method, liquid crystal display screen and driving chip thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102867491B (en) | LCD (Liquid Crystal Display) panel drive circuit and method as well as display unit | |
| CN104795040A (en) | Array substrate, display device and shutdown ghost improving circuit for display device | |
| CN100380183C (en) | Liquid crystal display equipment, method for controlling the same equipment and portable terminal | |
| CN101546529B (en) | Liquid crystal display device | |
| CN100444232C (en) | Discharging circuit and liquid crystal panel drive circuit using the discharging circuit | |
| CN107633832A (en) | Liquid crystal display device and its driving method | |
| CN105976776A (en) | Liquid crystal display screen discharging method, liquid crystal display screen and driving chip thereof | |
| CN1953030B (en) | Control circuit device and liquid crystal display with the same | |
| CN102014204B (en) | Method for displaying time in shutdown state of mobile terminal | |
| US11355073B2 (en) | Control circuit, display apparatus and method for supplying power to light source in display apparatus | |
| CN104616615A (en) | Screen clearing circuit and display device | |
| CN107516503A (en) | Liquid crystal panel drive circuit and liquid crystal panel drive method | |
| CN104916263A (en) | Display panel and driving method thereof | |
| CN108962165A (en) | A kind of circuit and method for eliminating IGZO display panel power down ghost | |
| CN107025888A (en) | Driving method and the drive device of correlation for display device | |
| WO2022179282A1 (en) | Afterimage elimination circuit and display apparatus | |
| CN109616069A (en) | Input voltage processing method, device, display base plate and display device | |
| CN108307563A (en) | Integral LED driving with emergent self-checking function and its self checking method | |
| CN105206230A (en) | Liquid crystal display backlight control circuit and terminal device | |
| CN101339305A (en) | LCD device public voltage source and its electric charge recovery system | |
| CN107170416A (en) | The driving method and drive circuit of a kind of LCDs | |
| CN207425330U (en) | The quick circuit for eliminating LCD TV power-off ghost shadow | |
| CN101673519A (en) | Electronic device for improving picture quality and relevant method and liquid crystal display thereof | |
| CN203788004U (en) | Power supply management circuit and liquid crystal display device | |
| CN210535320U (en) | Level conversion circuit, level conversion chip and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170915 |