CN106057150A - High precision grid driving circuit - Google Patents
High precision grid driving circuit Download PDFInfo
- Publication number
- CN106057150A CN106057150A CN201610550788.2A CN201610550788A CN106057150A CN 106057150 A CN106057150 A CN 106057150A CN 201610550788 A CN201610550788 A CN 201610550788A CN 106057150 A CN106057150 A CN 106057150A
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- CN
- China
- Prior art keywords
- signal
- driver element
- amplifier
- vgan
- output
- 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.)
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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
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
Abstract
The invention discloses a high precision grid driving circuit. The high precision grid driving circuit comprises n driving units, a clock signal providing wire and a start signal providing wire, wherein the start signal providing wire is electrically connected with the first driving unit and is used for starting the first driving unit, a signal amplifier is further provided, the first driving unit works under the start action of a start signal and outputs an output signal according to a received clock signal, a signal output end of the first driving unit is connected with a signal input end of the signal amplifier, and the output signal of the signal amplifier is used for driving a row of pixel units and is taken as an input signal of the second driving unit to start the second driving unit. The high precision grid driving circuit is advantaged in that the structure is simple, control precision is high, and a problem that driving precision of LCD frame quality can not be guaranteed through the driving circuit because of signal attenuation is prevented.
Description
Technical field
The present invention relates to Display Technique field, particularly relate to a kind of high-precision gate driver circuit.
Background technology
LCD is the abbreviation of Liquid Crystal Display, and its Chinese full name is " Thin Film Transistor-LCD
Part ", the structure of LCD is the crystal placing liquid in the middle of the glass that two panels is parallel, has many vertical and water in the middle of two sheet glass
Flat tiny electrode, controls shaft-like crystal molecular changes direction through whether being energized, light reflects generation picture.
Owing to LCD image quality is good, volume is little, lightweight, low driving voltage, low-power consumption, radiationless and manufacturing cost relatively
The advantage such as low, the use in flat display field at present gets more and more.
LCD is when showing, by drive circuit output signal, is scanned each pixel line by line.LCD drive circuit
Mainly including gate driver circuit and source electrode drive circuit, source electrode drive circuit is by the video data inputted and clock signal timing
Order latches, and is input to the data wire of liquid crystal indicator after being converted into analogue signal, and gate driver circuit is by the clock of input
Signal, through conversion, is converted into on/off voltage, is sequentially applied on the gate line of liquid crystal indicator, sequentially to grid
Line carries out the action of Push And Release.
Existing gate driver circuit includes multiple driver element, and the connection in sequential series of each driver element, previous stage is driven
Moving cell is that rear stage driver element transmits output signal, and this output signal drives single as enabling signal to start later
Unit, signal transmits successively, until last driver element, so that whole pixel region is entered by whole gate driver circuit line by line
Row cutting.Owing to, after the signal of multiple driver elements transmits, the output signal of previous stage driver element output can gradually become
Weak, so that the driving deterioration in accuracy of whole gate driver circuit, and then the display quality of LCD picture can be affected.
Summary of the invention
The technical problem to be solved in the present invention is that existing gate driver circuit is led owing to multiple driver element signals transmit
The number of writing gradually dies down, so that the driving precision of LCD image quality cannot be ensured by drive circuit, image quality is poor.
For solving above-mentioned technical problem, the technical solution used in the present invention is: high-precision gate driver circuit, including n
Individual driver element SR1-SRn, clock signal provide line Clk0-Clk0n, initial signal to provide line Stv0；Initial signal provides line
Stv0 and the first driver element SR1 is electrically connected with, and is used for providing initial signal to start the first driver element SR1；It is additionally provided with letter
Number amplifier VGA1-VGAn；First driver element SR1 works under the startup of initial signal, and according to the clock signal received
Output signal output, the signal output part of described first driver element SR1 connects the signal input part of signal amplifier VGA1, letter
The output signal of number amplifier VGA1 is in order to drive one-row pixels unit and as the input signal of the second driver element SR2 to open
Dynamic second driver element SR2, that is, the output signal of driver element SRm is after amplifier VGAm amplifies, simultaneously as a line
The driving signal of pixel cell and driver element SRm thereof+1Input signal, described 1 ＜ m ＜ n.
By increasing amplifier, driver element output signal is strengthened, it is to avoid the output of previous stage driver element output
The problem that signal gradually dies down, and to prior art change the least, simple in construction, it is simple to produce, it is ensured that the effect of driving and
The display precision of display screen.
For improving the precision controlled further, being additionally provided with comparator, the signal input part of described comparator connects respectively to be put
Signal output part and the initial signal of big device VGAn provide line Stv0, and its outfan connects the control end of amplifier VGA1-VGAn,
The amplification of regulation amplifier VGA1-VGAn.This part is equivalent to feedback unit, by the output signal of last amplifier
Compare with primary signal, regulate the amplification of amplifier timely so that it is amplify result and meet needs.
Concrete, the decay equal to driver element SR1-SRn times of the signal amplification factor of described amplifier VGA1-VGAn
Number.
The invention have the advantage that simple in construction, control accuracy are high, drive circuit will be caused LCD because of signal attenuation
The driving precision of image quality cannot ensure.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
As it is shown in figure 1, high-precision gate driver circuit, including n driver element SR1-SRn, signal amplifier VGA1-
VGAn, clock signal provide line Clk0-Clk0n, comparator and initial signal to provide line Stv0.
Initial signal provides line Stv0 and the first driver element SR1 electric connection, is used for providing initial signal to start the
One driver element SR1.
First driver element SR1 works under the startup of initial signal, and defeated according to the clock signal Clk0 output received
Going out signal, the signal output part of described first driver element SR1 connects the signal input part of signal amplifier VGA1, and signal amplifies
The output signal of device VGA1 is in order to drive one-row pixels unit and as the input signal of the second driver element SR2 to start second
Driver element SR2, that is, the output signal of driver element SRm is after amplifier VGAm amplifies, simultaneously as one-row pixels list
The driving signal of unit and driver element SRm thereof+1Input signal, described 1 ＜ m ＜ n.
By increasing amplifier, driver element output signal is strengthened, it is to avoid the output of previous stage driver element output
The problem that signal gradually dies down, and to prior art change the least, simple in construction, it is simple to produce, it is ensured that the effect of driving and
The display precision of display screen.
The signal input part of described comparator connects signal output part and the initial signal offer line of amplifier VGAn respectively
Stv0, its outfan connects the control end of amplifier VGA1-VGAn, the amplification of regulation amplifier VGA1-VGAn.This part
Be equivalent to feedback unit, the output signal of last amplifier is compared with primary signal, regulate amplifier timely
Amplification so that it is amplify result meet needs.
The signal amplification factor of the described amplifier VGA1-VGAn attenuation multiple equal to driver element SR1-SRn.
Claims (3)
- The most high-precision gate driver circuit, provides line Clk0-Clk0n including n driver element SR1-SRn, clock signal, rises Beginning signal provides line Stv0；Initial signal provides line Stv0 and the first driver element SR1 to be electrically connected with, and is used for providing initial signal To start the first driver element SR1；It is characterized in that: be additionally provided with signal amplifier VGA1-VGAn；First driver element SR1 works under the startup of initial signal, and according to the clock signal output signal output received, institute The signal output part stating the first driver element SR1 connects the signal input part of signal amplifier VGA1, signal amplifier VGA1's Output signal is in order to drive one-row pixels unit and as the input signal of the second driver element SR2 to start the second driver element SR2, that is, the output signal of driver element SRm is after amplifier VGAm amplifies, simultaneously as the driving of one-row pixels unit Signal and driver element SRm thereof+1Input signal, described 1 ＜ m ＜ n.
- High-precision gate driver circuit the most according to claim 1, is characterized in that: be additionally provided with comparator, described comparison The signal input part of device connects signal output part and the initial signal offer line Stv0 of amplifier VGAn respectively, and its outfan connects The control end of amplifier VGA1-VGAn, the amplification of regulation amplifier VGA1-VGAn.
- High-precision gate driver circuit the most according to claim 1, is characterized in that: described amplifier VGA1-VGAn's The signal amplification factor attenuation multiple equal to driver element SR1-SRn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610550788.2A CN106057150A (en) | 2016-07-14 | 2016-07-14 | High precision grid driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610550788.2A CN106057150A (en) | 2016-07-14 | 2016-07-14 | High precision grid driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106057150A true CN106057150A (en) | 2016-10-26 |
Family
ID=57185731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610550788.2A Pending CN106057150A (en) | 2016-07-14 | 2016-07-14 | High precision grid driving circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106057150A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019085489A1 (en) * | 2017-10-31 | 2019-05-09 | 云谷（固安）科技有限公司 | Display screen, pixel driving method, and display device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000276110A (en) * | 1999-03-19 | 2000-10-06 | Fujitsu Ltd | Liquid crystal display device |
| CN101290409A (en) * | 2007-04-17 | 2008-10-22 | 北京京东方光电科技有限公司 | Gate drive circuit and LCD device |
| CN101568954A (en) * | 2007-01-31 | 2009-10-28 | 夏普株式会社 | Display device |
| CN104269134A (en) * | 2014-09-28 | 2015-01-07 | 京东方科技集团股份有限公司 | Gate driver, display device and gate drive method |
| CN104932747A (en) * | 2015-06-24 | 2015-09-23 | 京东方科技集团股份有限公司 | Touch control driving unit, touch control panel and display device |
-
2016
- 2016-07-14 CN CN201610550788.2A patent/CN106057150A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000276110A (en) * | 1999-03-19 | 2000-10-06 | Fujitsu Ltd | Liquid crystal display device |
| CN101568954A (en) * | 2007-01-31 | 2009-10-28 | 夏普株式会社 | Display device |
| CN101290409A (en) * | 2007-04-17 | 2008-10-22 | 北京京东方光电科技有限公司 | Gate drive circuit and LCD device |
| CN104269134A (en) * | 2014-09-28 | 2015-01-07 | 京东方科技集团股份有限公司 | Gate driver, display device and gate drive method |
| CN104932747A (en) * | 2015-06-24 | 2015-09-23 | 京东方科技集团股份有限公司 | Touch control driving unit, touch control panel and display device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019085489A1 (en) * | 2017-10-31 | 2019-05-09 | 云谷（固安）科技有限公司 | Display screen, pixel driving method, and display device |
| US10755629B2 (en) | 2017-10-31 | 2020-08-25 | Yungu (Gu'an) Technology Co., Ltd. | Display screen, pixel driving method and display device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161026 |
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| WD01 | Invention patent application deemed withdrawn after publication |