CN106409242B - A kind of liquid crystal display shows the ameliorative way of ghost - Google Patents
A kind of liquid crystal display shows the ameliorative way of ghost Download PDFInfo
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- CN106409242B CN106409242B CN201610428550.2A CN201610428550A CN106409242B CN 106409242 B CN106409242 B CN 106409242B CN 201610428550 A CN201610428550 A CN 201610428550A CN 106409242 B CN106409242 B CN 106409242B
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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
- G09G3/20—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
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
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- Theoretical Computer Science (AREA)
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The invention discloses the ameliorative ways that a kind of liquid crystal display shows ghost; the liquid crystal display includes several source lines and several gate lines; the source line and gate line are respectively by source driving and gate drive control; charge, which is sent, to the source line and gate line respectively at interval of the driving of source described in certain frame number and gate driving eliminates signal; after the source line and gate line have executed charge elimination signal, then execute next frame normal pictures signal.This method can solve liquid crystal display when showing same frame picture for a long time, and being transformed into next frame picture in the case where not influencing the normal display effect of liquid crystal display, since charge remaining in capacitor can not quick release and the ghost problem that generates.
Description
Technical field
The present invention relates to the ameliorative ways that field of liquid crystal display more particularly to a kind of liquid crystal display show ghost.
Background technique
Current TFT-LCD, because of technological problems, the VCOM compensation of IC can not accomplish the completely right of positive and negative source voltage
Claim.Usually in the case where the same painting face is shown too long, liquid crystal display can there are the residual of a upper width in next width picture
Shadow, this is because the charged ion in liquid crystal is adsorbed on glass both ends up and down, and is formed built-in in display same picture for a long time
Electric field, these ions do not release at once after screen switching, so that liquid crystal molecule does not go to the angle that should turn at once
Caused.
Summary of the invention
In order to solve above-mentioned the deficiencies in the prior art, the present invention provides a kind of improvement side of liquid crystal display display ghost
Method.This method can solve liquid crystal display in long-time and show the same painting in the case where not influencing normal display effect
Face, and when being transformed into next width picture, since the charge that stores in capacitor can not quick release and the ghost problem that generates.
The technical problems to be solved by the invention are achieved by the following technical programs:
A kind of liquid crystal display shows the ameliorative way of ghost, which includes several source lines and several
Gate line, the source line and gate line by source driving and gate drive control, include the following steps: respectively
S1: presetting the source driving and gate driving sends charge to the source line and gate line respectively and eliminates
The interval frame number of signal；
S2: judge whether the source line and the frame number of gate line execution normal pictures signal reach preset interval frame
Number: if so, source driving and gate driving send charge to the source line and gate line respectively and eliminate signal；
If it is not, then the source driving and gate driving do not send charge elimination signal to the source line and gate line；
S3: the source line and gate line execute charge and eliminate signal；
S4: the source driving and gate drive the signal that normal pictures are sent to the source line and gate line；
S5: the source line and gate line execute the signal of normal pictures, and repeat step S2 ~ S5.
Further, in the step S1, the preset interval frame number for sending charge elimination signal is 1 ~ 3530
Frame.
Further, in the step S1, the preset charge that sends eliminates the interval frame number of signal as 1 frame.
Further, the charge eliminates signal are as follows: and the gate drives to the sending of all gate lines and opens simultaneously signal,
The source drives to all source lines and inputs 0V voltage.
Further, the charge eliminates signal are as follows: and the gate drives to the sending of part gate line and opens simultaneously signal,
The source drives to all source lines and inputs 0V voltage.
Further, the charge eliminates the execution time of signal as 30us.
Further, the charge eliminates signal are as follows: the gate driving does not issue signal to the gate line, described
Source drives the voltage opposite with the source line execution voltage of previous frame normal pictures to the input of all source lines.
Further, the charge eliminates signal are as follows: the gate driving does not issue signal to the gate line, described
Source drives the voltage opposite with the source line execution voltage of previous frame normal pictures to the input of part source line.
Further, the charge eliminates the execution time of signal as 16.7ms.
The invention has the following beneficial effects: the liquid crystal displays to show that the ameliorative way of ghost can not influence normally
In the case where display effect, every certain frame number, source line and gate line execute a charge and eliminate signal, by all
Or part source line inputs 0V, to realize the repid discharge of capacitor；Alternatively, inputting reversion electricity to all or part of source lines
Pressure realizes government's charge cancellation to eliminate residual charge, solves liquid crystal display in long-time and shows the same painting face, and converts
When to next width picture, since charge remaining in capacitor can not quick disappearance and the ghost problem that generates.
Detailed description of the invention
Fig. 1 is the equivalent circuit diagram of TFT substrate；
Fig. 2 is the equivalent circuit diagram of single TFT；
Fig. 3 is the flow chart for the ameliorative way that liquid crystal display provided by the invention shows ghost.
Specific embodiment
The present invention will be described in detail with reference to the accompanying drawings and examples.
TFT substrate generally makes semiconductor layer on the glass substrate, there is connected source electrode and drain electrode at its both ends；
It is opposite with semiconductor by gate insulating film, it is equipped with grid；Using the voltage for being applied to grid come voltage input, electric leakage interpolar
Electric current.
It is as shown in Figure 1 the equivalent circuit diagram of TFT substrate, by mutually insulated vertical several source lines and several gate
Line composition, all source lines by source drive control, all gate lines by gate drive control, each source line and
A pixel TFT is all connected between each gate line.
Common TFT is three terminal device, and function is just comparable to a switching tube.For liquid crystal display, often
A pixel TFT can simplify from structure sees one layer of liquid crystal of folder between pixel electrode PIXEL and public electrode VCOM as, heavier
What is wanted is that it can be regarded as a pixel capacitance Clc as shown in Figure 2 from the angle of electricity, and pixel capacitance Clc is parallel with storage
Capacitor Cs.Gate line G control switch T and capacitor switch on and off, when switch T connects capacitor, source line D to capacitor into
Row charging, when switch T breaking capacitance, capacitor self-discharge.
Embodiment one
As shown in figure 3, a kind of liquid crystal display shows the ameliorative way of ghost, which includes several source
Line and several gate lines, the source line and gate line are respectively by source driving and gate drive control, including walk as follows
It is rapid:
S1: presetting the source driving and gate driving sends charge to the source line and gate line respectively and eliminates
The interval frame number of signal；
The preset charge that sends eliminates the interval frame number of signal as 1 ~ 3530 frame, it is preferable that the preset transmission
The interval frame number that charge eliminates signal is 1 frame.
S2: judge whether the source line and the frame number of gate line execution normal pictures signal reach preset interval frame
Number: if so, source driving and gate driving send charge to the source line and gate line respectively and eliminate signal；
If it is not, then the source driving and gate driving do not send charge elimination signal to the source line and gate line；
Specifically, the charge eliminates signal are as follows: the gate drives to the sending of all gate lines and opens simultaneously signal, institute
Source is stated to drive to all source lines input 0V voltage；
Alternatively, the gate, which drives to the sending of part gate line, opens simultaneously signal, the source is driven to all
Source line inputs 0V voltage, such as: all gate lines are divided into three parts or four parts from top to bottom, each charge is eliminated
Signal opens simultaneously for the gate line of one third therein or a quarter.
Preferably, the charge eliminates the execution time of signal as 30us.
S3: the source line and gate line execute charge and eliminate signal；
When all or part of gate lines execute opening signal, switch T and capacitor in corresponding pixel TFT are connected,
Source line charges to all capacitors for having connected switch T, charging voltage 0V, i.e., by having connected switch T to all
Capacitor be filled with 0V voltage, with realize capacitor memory storage charge quick release purpose.
S4: the source driving and gate drive to the source line and gate line and send next frame normal pictures
Signal；
S5: the source line and gate line execute the signal of normal pictures, and repeat step S2 ~ S5.
Embodiment two
As shown in figure 3, a kind of liquid crystal display shows the ameliorative way of ghost, which includes several source
Line and several gate lines, the source line and gate line are respectively by source driving and gate drive control, including walk as follows
It is rapid:
S1: presetting the source driving and gate driving sends charge to the source line and gate line respectively and eliminates
The interval frame number of signal；
The preset charge that sends eliminates the interval frame number of signal as 1 ~ 3530 frame, it is preferable that the preset transmission
The interval frame number that charge eliminates signal is 1 frame.
S2: judge whether the source line and the frame number of gate line execution normal pictures signal reach preset interval frame
Number: if so, source driving and gate driving send charge to the source line and gate line respectively and eliminate signal；
If it is not, then the source driving and gate driving do not send charge elimination signal to the source line and gate line；
Specifically, the charge eliminates signal are as follows: the gate driving does not issue signal, all gate to the gate line
Line still executes the signal of previous frame normal pictures, and the source drives to input to all source lines and hold with the source line
The opposite voltage of the voltage of row previous frame normal pictures；
Alternatively, the gate driving does not issue signal to the gate line, all gate lines still execute previous frame and normally draw
The signal in face, the source drive the input of the source line into the part region gate to execute previous frame with the source line
The opposite voltage of the voltage of normal pictures, for example, all gate lines are divided into three parts or four parts from top to bottom, it is electric every time
Lotus eliminate signal be in the gate line region of one third therein or a quarter source line input with it is described
The opposite voltage of the voltage of source line execution previous frame normal pictures.
Preferably, the charge eliminates the execution time of signal as 16.7ms.
S3: the source line and gate line execute charge and eliminate signal；
Switch T and capacitor when all gate lines still execute the signal of previous frame normal pictures, in one part of pixel TFT
Connect, the switch in one part of pixel TFT and capacitor disconnection, source line to all or part of capacitors for having connected switch T into
Row charging, charging voltage are the opposite voltage of voltage that the source line executes previous frame normal pictures, i.e., by all
Or the capacitor reverse charging of switch T has been connected in part, to realize remaining charge is quickly offset in all or part of capacitors mesh
's.
S4: the source driving and gate drive to the source line and gate line and send next frame normal pictures
Signal；
S5: the source line and gate line execute the signal of normal pictures, and repeat step S2 ~ S5.
Embodiments of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but can not
Therefore limitations on the scope of the patent of the present invention are interpreted as, as long as skill obtained in the form of equivalent substitutions or equivalent transformations
Art scheme should all be fallen within the scope and spirit of the invention.
Claims (4)
1. a kind of liquid crystal display shows the ameliorative way of ghost, which includes several source lines and several gate
Line, the source line and gate line are respectively by source driving and gate drive control, which is characterized in that including walking as follows
It is rapid:
S1: presetting the source driving and gate driving sends charge to the source line and gate line respectively and eliminates signal
Interval frame number；
S2: judge whether the source line and the frame number of gate line execution normal pictures signal reach preset interval frame number:
If so, the source driving and gate driving send charge to the source line and gate line respectively and eliminate signal；If
No, then the source driving and gate driving do not send charge to the source line and gate line and eliminate signal；
S3: the source line and gate line execute charge and eliminate signal；
S4: the source driving and gate drive the signal that normal pictures are sent to the source line and gate line；
S5: the source line and gate line execute the signal of normal pictures, and repeat step S2 ~ S5；
The charge eliminates signal are as follows: the gate drives to the sending of all or part of gate lines and opens simultaneously signal, described
Source drives to all source lines and inputs 0V voltage；It is corresponding when all or part of gate lines execute opening signal
Switch and capacitor in pixel TFT are connected, and source line charges to all capacitors for having connected switch, and charging voltage is
0V。
2. the ameliorative way that liquid crystal display according to claim 1 shows ghost, which is characterized in that in the step S1
In, the preset charge that sends eliminates the interval frame number of signal as 1 ~ 3530 frame.
3. the ameliorative way that liquid crystal display according to claim 1 shows ghost, which is characterized in that in the step S1
In, the preset charge that sends eliminates the interval frame number of signal as 1 frame.
4. the ameliorative way that liquid crystal display according to claim 1 shows ghost, which is characterized in that the charge is eliminated
The execution time of signal is 30us.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610428550.2A CN106409242B (en) | 2016-06-17 | 2016-06-17 | A kind of liquid crystal display shows the ameliorative way of ghost |
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| CN201610428550.2A CN106409242B (en) | 2016-06-17 | 2016-06-17 | A kind of liquid crystal display shows the ameliorative way of ghost |
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| CN106409242B true CN106409242B (en) | 2019-01-22 |
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| CN107809634B (en) * | 2017-11-07 | 2019-04-23 | 歌尔股份有限公司 | Smear management-control method and device |
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| CN101174038A (en) * | 2006-11-01 | 2008-05-07 | 群康科技(深圳)有限公司 | LCD device |
| US20080303775A1 (en) * | 2007-06-08 | 2008-12-11 | Innocom Technology(Shenzhen) Co., Ltd.; Innolux Display Corp. | Liquid crystal display having logic converter for controlling pixel units to discharge |
| CN102033372A (en) * | 2009-09-24 | 2011-04-27 | 北京京东方光电科技有限公司 | TFT-LCD array substrate and manufacturing, detecting and driving methods thereof |
| CN203299486U (en) * | 2013-06-17 | 2013-11-20 | 深圳市华星光电技术有限公司 | Liquid crystal cell and liquid crystal display with same |
| CN105096888A (en) * | 2015-08-28 | 2015-11-25 | 京东方科技集团股份有限公司 | Array substrate, and display panel and driving method thereof |
-
2016
- 2016-06-17 CN CN201610428550.2A patent/CN106409242B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101174038A (en) * | 2006-11-01 | 2008-05-07 | 群康科技(深圳)有限公司 | LCD device |
| US20080303775A1 (en) * | 2007-06-08 | 2008-12-11 | Innocom Technology(Shenzhen) Co., Ltd.; Innolux Display Corp. | Liquid crystal display having logic converter for controlling pixel units to discharge |
| CN102033372A (en) * | 2009-09-24 | 2011-04-27 | 北京京东方光电科技有限公司 | TFT-LCD array substrate and manufacturing, detecting and driving methods thereof |
| CN203299486U (en) * | 2013-06-17 | 2013-11-20 | 深圳市华星光电技术有限公司 | Liquid crystal cell and liquid crystal display with same |
| CN105096888A (en) * | 2015-08-28 | 2015-11-25 | 京东方科技集团股份有限公司 | Array substrate, and display panel and driving method thereof |
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