CN106297700B - Eliminate the liquid crystal display and its display device of ghost - Google Patents
Eliminate the liquid crystal display and its display device of ghost Download PDFInfo
- Publication number
- CN106297700B CN106297700B CN201610779768.2A CN201610779768A CN106297700B CN 106297700 B CN106297700 B CN 106297700B CN 201610779768 A CN201610779768 A CN 201610779768A CN 106297700 B CN106297700 B CN 106297700B
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- Prior art keywords
- high level
- wave signal
- square
- voltage
- driving circuit
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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
- G09G3/20—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
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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
- G09G2310/00—Command of the display device
- G09G2310/06—Details of flat display driving waveforms
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0257—Reduction of after-image effects
Abstract
The present invention provides a kind of liquid crystal display and its display device for eliminating ghost, display device includes a timer controller, one power supervisor, one low and high level conversion chip and a gate driving circuit, timer controller is for sending the first starting square-wave signal and multiframe signal to gate driving circuit, power supervisor gives low and high level conversion chip as the conducting voltage of gate driving circuit and one negative driving voltage of transmission to gate driving circuit for sending a positive driving voltage, timer controller is also used to send one second starting square-wave signal and gives low and high level conversion chip, low and high level conversion chip is used to generate a driving square-wave signal according to negative driving voltage and the second starting square-wave signal and sends blanking voltage of the driving square-wave signal to gate driving circuit as gate driving circuit, drive continuing for the high level of square-wave signal Period is located at the blank section of each frame signal, so that gate driving circuit discharges in blank section.
Description
Technical field
The present invention relates to display field more particularly to a kind of liquid crystal display and its display devices.
Background technique
With the development of technology, the application of liquid crystal display is more and more wider, and requirement of the consumer to liquid crystal display is also got over
Come it is higher, and in the processing procedure of liquid crystal, since liquid crystal Economical Purification inevitably can not be remained some removable wherein
Ion, when applying voltage, these removable ions can by electrode with its opposite polarity charge attraction and to electrode movement,
If the voltage difference polarity of application on the contrary, ion the direction of motion also and then on the contrary, apply voltage difference average voltage level be 0,
Removable ion can cancel out each other to two the mobile of electrode, between distance also can be 0, if the voltage difference of two applications is averaged
Value is not 0, and ion can be intended to one of electrode movement, is moved to the interface of liquid crystal and alignment films always, and is acquired
On this interface, these charged ions can on another electrode opposite polarity charge formed electric field, this internal electric field can with it is outer
Portion's electric field influences the arrangement and transmissivity of liquid crystal together, so that transmission versus voltage relation curve changes, is in the voltage difference of application
The arrangement of liquid crystal can also change because of internal electric field when 0, in this way, ghost is caused under long duration of action, to influence consumer's
Viewing effect.
Summary of the invention
In order to overcome the deficiencies of the prior art, the present invention provides a kind of liquid crystal display and its display device for eliminating ghost.
The present invention provide it is a kind of eliminate ghost display device, the display device include a timer controller,
One power supervisor, a low and high level conversion chip and a gate driving circuit, the timer controller is for sending first
Start square-wave signal and multiframe signal to the gate driving circuit, the power supervisor for send a positive driving voltage to
The gate driving circuit is electric to the height as the conducting voltage and one negative driving voltage of transmission of the gate driving circuit
Flat conversion chip, the timer controller are also used to send one second starting square-wave signal and convert core to the low and high level
Piece, the low and high level conversion chip are used to generate a driving according to the negative driving voltage and the second starting square-wave signal
Square-wave signal simultaneously sends electric conduction of the driving square-wave signal to the gate driving circuit as the gate driving circuit
The duration of pressure, the high level of the driving square-wave signal is located at the blank section of each frame signal, so that the grid
Driving circuit is connected in the blank section and is discharged.
Further, the low level voltage of the driving square-wave signal is the negative driving voltage.
Further, the duration and described second of the high level of the driving square-wave signal starts square-wave signal
The duration of high level is identical.
Further, the duration of the high level of the driving square-wave signal is located at the first starting square-wave signal
Before the time for starting high level.
Further, the high level of the voltage of the high level of the driving square-wave signal and the second starting square-wave signal
The proportional relationship of voltage.
Further, the power supervisor includes an operational amplifier, the electricity of the high level of the driving square-wave signal
Pressure is obtained by the high level of the second starting square-wave signal through the operation amplifier of the operational amplifier.
Further, the power supervisor further includes different groups of resistance, and the operational amplifier can connect different groups
Resistance to changing operation amplifier multiple.
The present invention also provides a kind of liquid crystal display, the liquid crystal display includes above-mentioned display device.
Further, the liquid crystal display further includes the liquid crystal display panel for connecting the gate driving circuit.
In the present invention, the low and high level conversion chip is used for according to the negative driving voltage and the second starting side
Wave signal generates a driving square-wave signal and sends the driving square-wave signal to the gate driving circuit as the grid
The duration of the blanking voltage of driving circuit, the high level of the driving square-wave signal is located at the blank area of each frame signal
Between, so that the gate driving circuit is connected in the blank section and is discharged, to eliminate ghost phenomena.
Detailed description of the invention
Fig. 1 is the system block diagram for the liquid crystal display better embodiment that the present invention eliminates ghost.
Fig. 2 is the signal timing diagram for the liquid crystal display better embodiment that the present invention eliminates ghost.
Specific embodiment
Now, it is described more fully present inventive concept hereinafter with reference to attached drawing, the invention is shown in the accompanying drawings
The exemplary embodiment of design.According to the exemplary embodiment below described in more detail with reference to the accompanying drawings, present inventive concept
The advantages of and feature and make they realize method will be apparent.It is to be noted, however, that present inventive concept is not limited to
Following illustrative embodiment, and can be implemented in a variety of manners.Therefore it provides exemplary embodiment is only for open
Present inventive concept and allow skilled in the art realises that present inventive concept scope.In the accompanying drawings, the embodiment of present inventive concept
It is not limited to specific example provided herein.
Unless otherwise defined, otherwise all terms used in the embodiment disclosed by the invention (including technical term and
Scientific term) there is meaning identical with the those of ordinary skill of technical field belonging to the present invention normally understood meaning of institute,
And it is not necessarily limited to known specific definitions when describing the present invention.Therefore, these terms may include the moment it
The equivalent terms created afterwards.It will be further understood that such as these terms defined in usually used dictionary should be explained
For with meaning identical with their meaning in this specification and under the background of the prior art, and unless here it is clear this
Otherwise sample definition will not be explained with Utopian or too formal meaning.
Fig. 1 and Fig. 2 is please referred to, the liquid crystal display better embodiment that the present invention eliminates ghost includes a Timer Controlling
10, one power supervisor 30 of device (TCON), a low and high level conversion chip 50, a gate driving circuit 70 and a liquid crystal display panel
(Cell)90.The timer controller 10 is for sending the first starting square-wave signal STV0 and multiframe signal (not shown) to institute
Gate driving circuit 70 is stated, the power supervisor 30 is for sending a positive driving voltage VGH to the gate driving circuit 70
Conducting voltage and one negative driving voltage VGL of transmission as the gate driving circuit 70 is to the low and high level conversion chip
50.The timer controller 10 is also used to send one second starting square-wave signal STV2 to the low and high level conversion chip
50.The gate driving circuit 70 is for driving the liquid crystal display panel 90 to be shown.
The low and high level conversion chip 50 includes a resistance combination 51 and an operational amplifier 53.The resistance combination packet
The different resistance of multiple groups is included, the operational amplifier 53 can connect from the resistance of different groups of the resistance combination 51 and change institute
State the amplification factor that operation abandons 53.The low and high level conversion chip 50 is used for according to the negative driving voltage VGL and described
Second starting square-wave signal STV2 generates a driving square-wave signal VGL0 and sends the driving square-wave signal VGL0 to the grid
Blanking voltage of the pole driving circuit as the gate driving circuit 70, the high level of the driving square-wave signal VGL0 continue
Period is located at the blank section of each frame signal, so that the gate driving circuit 70 discharges in the blank section,
To eliminate ghost phenomena.
In the present embodiment, the low level voltage of the driving square-wave signal VGL0 is the negative driving voltage VGL, institute
State the duration of the high level of driving square-wave signal VGL0 and holding for the high level of the second starting square-wave signal STV2
The continuous period is identical, the height of the voltage of the high level of the driving square-wave signal VGL0 and the second starting square-wave signal STV2
The proportional relationship of the voltage of level.
Although the present invention has shown and described referring to specific embodiment, it should be appreciated by those skilled in the art that:
In the case where not departing from the spirit and scope of the present invention being defined by the claims and their equivalents, can carry out herein form and
Various change in details.
Claims (9)
1. a kind of display device for eliminating ghost, it is characterised in that: the display device includes a timer controller, a power supply
Manager, a low and high level conversion chip and a gate driving circuit, the timer controller is for sending the first starting side
Wave signal and multiframe signal give the gate driving circuit, and the power supervisor is for sending a positive driving voltage to the grid
Pole driving circuit is converted as the conducting voltage and one negative driving voltage of transmission of the gate driving circuit to the low and high level
Chip, the timer controller be also used to send one second starting square-wave signal to the low and high level conversion chip, it is described
Low and high level conversion chip is used to generate a driving square wave letter according to the negative driving voltage and the second starting square-wave signal
Number and send the blanking voltage of the driving square-wave signal to the gate driving circuit as the gate driving circuit, it is described
The duration of the high level of square-wave signal is driven to be located at the blank section of each frame signal, so that the gate driving circuit
It discharges in the blank section.
2. display device according to claim 1, which is characterized in that it is described driving square-wave signal low level voltage be
The negative driving voltage.
3. display device according to claim 2, which is characterized in that it is described driving square-wave signal high level it is lasting when
Between section with it is described second starting the duration of high level of square-wave signal it is identical.
4. display device according to claim 3, which is characterized in that it is described driving square-wave signal high level it is lasting when
Between section be located at it is described first starting square-wave signal start high level time before.
5. display device according to claim 1, which is characterized in that it is described driving square-wave signal high level voltage with
The proportional relationship of voltage of the high level of the second starting square-wave signal.
6. display device according to claim 5, which is characterized in that the low and high level conversion chip includes that an operation is put
The voltage of big device, the high level of the driving square-wave signal is put by the high level of the second starting square-wave signal through the operation
The operation amplifier of big device and obtain.
7. display device according to claim 6, which is characterized in that the low and high level conversion chip further includes different groups
Resistance, the operational amplifier can connect different groups of resistance to change operation amplifier multiple.
8. a kind of liquid crystal display, which is characterized in that the liquid crystal display includes the display of claim 1 to 7 any one
Device.
9. liquid crystal display according to claim 8, which is characterized in that the liquid crystal display further includes connecting the grid
The liquid crystal display panel of pole driving circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610779768.2A CN106297700B (en) | 2016-08-30 | 2016-08-30 | Eliminate the liquid crystal display and its display device of ghost |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610779768.2A CN106297700B (en) | 2016-08-30 | 2016-08-30 | Eliminate the liquid crystal display and its display device of ghost |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106297700A CN106297700A (en) | 2017-01-04 |
| CN106297700B true CN106297700B (en) | 2019-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610779768.2A Active CN106297700B (en) | 2016-08-30 | 2016-08-30 | Eliminate the liquid crystal display and its display device of ghost |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108172157B (en) * | 2017-11-24 | 2021-06-18 | 南京中电熊猫平板显示科技有限公司 | Display device and driving method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100561560C (en) * | 2006-09-01 | 2009-11-18 | 群康科技(深圳)有限公司 | Liquid crystal display driving method |
| KR101330216B1 (en) * | 2006-11-02 | 2013-11-18 | 삼성디스플레이 주식회사 | Liquid crystal display |
| CN101572069A (en) * | 2009-05-21 | 2009-11-04 | 友达光电股份有限公司 | Monitor and method for eliminating ghost thereof |
| JP2011085680A (en) * | 2009-10-14 | 2011-04-28 | Epson Imaging Devices Corp | Liquid crystal display device, scanning line drive circuit, and electronic apparatus |
| US9165516B2 (en) * | 2012-02-10 | 2015-10-20 | Sharp Kabushiki Kaisha | Display device and drive method therefor |
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| CN106297700A (en) | 2017-01-04 |
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