CN103197456A - Liquid crystal display as well as method for improving horizontal black belt of liquid crystal display and drive circuit - Google Patents
Liquid crystal display as well as method for improving horizontal black belt of liquid crystal display and drive circuit Download PDFInfo
- Publication number
- CN103197456A CN103197456A CN2013101450966A CN201310145096A CN103197456A CN 103197456 A CN103197456 A CN 103197456A CN 2013101450966 A CN2013101450966 A CN 2013101450966A CN 201310145096 A CN201310145096 A CN 201310145096A CN 103197456 A CN103197456 A CN 103197456A
- Authority
- CN
- China
- Prior art keywords
- sweep signal
- integrated circuit
- row pixels
- pixel voltage
- frame buffer
- 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.)
- Granted
Links
Images
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a liquid crystal display as well as a method for improving a horizontal black belt of the liquid crystal display and a drive circuit. The liquid crystal display comprises a liquid crystal display panel, a plurality of gate drive integrated circuits, a frame buffer, a data drive integrated circuit, a counter and a lookup table, wherein the liquid crystal display panel includes a plurality of pixels which are arranged in the form of an array; each gate drive integrated circuit is used for outputting n scanning signals by n scanning lines, and each scanning signal is used for controlling one row of pixels; the frame buffer is used for outputting a plurality of pixel voltages to the data drive integrated circuit in sequence; the data drive integrated circuit is used for outputting the plurality of pixel voltages to each row of pixels; the counter is used for detecting whether the pixel voltages output by the frame buffer are the pixel voltages of one row of pixels controlled by the m-th scanning signal or not, wherein m is not smaller than 1 and not bigger than n; and the lookup table is used for judging whether the pixel voltages of one row of pixels controlled by the m-th scanning signal to one row of pixels controlled by the n-th scanning signal are reduced in sequence or not according to the detected result of the counter. Therefore, the horizontal black belt of the liquid crystal display can be improved, and the quality of the display frame can be improved.
Description
Technical field
The present invention relates to field of liquid crystal display.More particularly, relate to a kind of LCD and improve method, the driving circuit of the horizontal black-tape of LCD.
Background technology
At present, be that the size of LCD (LCD) of main type of drive is increasing with film-type transistor (TFT), resolution is also more and more higher.Equivalent resistance and equivalent capacity load on the corresponding transmission path are also increasing, cause the data-signal (being pixel voltage) of data-driven integrated circuit (Data IC) output and the grid control signal of grid-driving integrated circuit (Gate IC) output all can morph like this, this phenomenon is commonly referred to RC delay.
When the resolution of LCD and size increased, RC delay also became greatly, and above-mentioned variation aggravates.In the transmission course of the cut-in voltage (VGH) of the grid of TFT, because the existence of RC delay, the cut-in voltage difference of the actual output of adjacent two Gate IC, like this in the identical duration of charging, receive the sweep trace of lower cut-in voltage (being generally lower away from the cut-in voltage of the Gate IC output of Data IC) to the duration of charging deficiency of pixel.According to the pixel voltage of LCD and the relation of brightness, what the difference of charging will cause producing brightness (GTG) saltus step in the pixel of the adjacent of two Gate IC, show as horizontal black-tape (H-Block).Horizontal black-tape (H-block) can reduce the picture quality of LCD, influences its competitive power, need be improved.
Summary of the invention
In order to solve the problem that above-mentioned prior art exists, the object of the present invention is to provide a kind of method of improving the horizontal black-tape of LCD, this LCD comprises: several grid-driving integrated circuits, frame buffer, data-driven integrated circuit, counter and look-up table, wherein, each grid-driving integrated circuit comprises n bar sweep trace, and n is not less than 1 natural number; Described method comprises step: A) each grid-driving integrated circuit is by n sweep signal of n bar sweep trace output, and each sweep signal is controlled the one-row pixels of this sweep signal correspondence; B) frame buffer is exported a plurality of pixel voltages successively to data-driven integrated circuit; C) a plurality of pixel voltages of exporting successively of data-driven integrated circuit received frame impact damper and should output to each capable pixel successively by a plurality of pixel voltages; D) counter detects the pixel voltage of the one-row pixels whether pixel voltage that frame buffer outputs to data-driven integrated circuit control for m sweep signal of each grid-driving integrated circuit output, wherein, and 1≤m≤n, and m is natural number; E) if the pixel voltage of the one-row pixels of m the sweep signal control that the pixel voltage of frame buffer output is each grid-driving integrated circuit to be exported, then according to the coordinate position at the one-row pixels place of m sweep signal correspondence, the detecting look-up table, the pixel voltage of the one-row pixels that one-row pixels to the n sweep signal of m sweep signal control controlled reduces successively; F) pixel voltage of the one-row pixels controlled of one-row pixels to the n sweep signal of m sweep signal control after will reducing is sent frame buffer back to, and outputs to data-driven integrated circuit successively by frame buffer.
In addition, described method also comprises step: if G) pixel voltage of frame buffer output is not the pixel voltage of the one-row pixels controlled of m sweep signal of described each grid-driving integrated circuit output, then return step B).
It is a kind of be used to the driving circuit that improves the horizontal black-tape of LCD that another object of the present invention also is to provide, comprise: several grid-driving integrated circuits, each grid-driving integrated circuit comprises n bar sweep trace, n is not less than 1 natural number, wherein, each grid-driving integrated circuit is by n sweep signal of n bar sweep trace output, and each sweep signal is controlled the one-row pixels of this sweep signal correspondence; Frame buffer is stored in a plurality of pixel voltages during the frame time, and a plurality of pixel voltages are outputed to data-driven integrated circuit successively; A plurality of pixel voltages that data-driven integrated circuit, received frame impact damper are exported successively also should output to each row pixel by a plurality of pixel voltages successively; The pixel voltage of the one-row pixels whether counter, the pixel voltage that detects frame buffer output are controlled for m sweep signal of each grid-driving integrated circuit output, wherein, 1≤m≤n, and m is natural number; Look-up table according to the result that counter detects, judges whether that the pixel voltage of one-row pixels that one-row pixels to the n sweep signal of m sweep signal control controlled reduces successively.
In addition, the pixel voltage that detects frame buffer output when counter is the pixel voltage of the one-row pixels controlled of m sweep signal of each grid-driving integrated circuit output, then according to the coordinate position at the one-row pixels place of m sweep signal correspondence, the detecting look-up table, the pixel voltage of the one-row pixels that one-row pixels to the n sweep signal of m sweep signal control controlled reduces successively; The pixel voltage of the one-row pixels that one-row pixels to the n sweep signal of m sweep signal control after reducing controlled is sent frame buffer back to, and outputs to data-driven integrated circuit successively by frame buffer.
In addition, the pixel voltage that detects frame buffer output when counter is not the pixel voltage of one-row pixels of m sweep signal control of described each grid-driving integrated circuit output, and then frame buffer continues the pixel voltage of the one-row pixels that m sweep signal of output sweep signal before controls to data-driven integrated circuit.
Another object of the present invention also is a kind of LCD is provided, and comprising: display panels, comprise a plurality of pixels, and described a plurality of pixels are arranged with array format; Several grid-driving integrated circuits, each grid-driving integrated circuit comprises n bar sweep trace, n is not less than 1 natural number, wherein, each grid-driving integrated circuit is by it n sweep signal of n bar sweep trace output that comprises, each sweep signal is controlled the one-row pixels of this sweep signal correspondence; Frame buffer is stored in a plurality of pixel voltages during the frame time, and a plurality of pixel voltages are outputed to data-driven integrated circuit successively; A plurality of pixel voltages that data-driven integrated circuit, received frame impact damper are exported successively also should output to each row pixel by a plurality of pixel voltages successively; The pixel voltage of the one-row pixels whether counter, the pixel voltage that detects frame buffer output are controlled for m sweep signal of each grid-driving integrated circuit output, wherein, 1≤m≤n, and m is natural number; Look-up table according to the result that counter detects, judges whether that the pixel voltage of one-row pixels that one-row pixels to the n sweep signal of m sweep signal control controlled reduces successively.
In addition, the pixel voltage that detects frame buffer output when counter is the pixel voltage of the one-row pixels controlled of m sweep signal of each grid-driving integrated circuit output, then according to the coordinate position at the one-row pixels place of m sweep signal correspondence, the detecting look-up table, the pixel voltage of the one-row pixels that one-row pixels to the n sweep signal of m sweep signal control controlled reduces successively; The pixel voltage of the one-row pixels that one-row pixels to the n sweep signal of m sweep signal control after reducing controlled is sent frame buffer back to, and outputs to data-driven integrated circuit successively by frame buffer.
In addition, the pixel voltage that detects frame buffer output when counter is not the pixel voltage of one-row pixels of m sweep signal control of described each grid-driving integrated circuit output, and then frame buffer continues the pixel voltage of the one-row pixels that m sweep signal of output sweep signal before controls to data-driven integrated circuit.
According to LCD of the present invention and improve method, the driving circuit of the horizontal black-tape of LCD, can improve the horizontal black-tape (H-Block) of LCD, improve quality of display pictures.
Description of drawings
Fig. 1 shows the synoptic diagram of LCD according to an embodiment of the invention.
Fig. 2 shows the synoptic diagram of driving circuit according to an embodiment of the invention.
Fig. 3 shows the process flow diagram of the method for the horizontal black-tape of LCD that improves embodiments of the invention.
Embodiment
Now embodiments of the invention are described in detail, its example shown in the accompanying drawings, wherein, identical label is represented same parts all the time.Below with reference to the accompanying drawings embodiment is described to explain the present invention.In the following description, obscuring of the present invention's design that causes for fear of the unnecessary detailed description of known features and/or function can be omitted the unnecessary detailed description of known features and/or function.
Fig. 1 shows the synoptic diagram of LCD according to an embodiment of the invention.
As shown in Figure 1, LCD comprises display panels 100 and drives the driving circuit that this display panels 100 shows according to an embodiment of the invention.When display panels 100 showed, driving circuit can improve the horizontal black-tape phenomenon that display panels 100 occurs, and improved the display frame quality of display panels 100.
With hereinafter, will above-mentioned driving circuit be described in detail.
Fig. 2 shows the synoptic diagram of driving circuit according to an embodiment of the invention.
As shown in Figure 2, driving circuit provides power supply to display panels 100 according to an embodiment of the invention, and driving circuit comprises data-driven integrated circuit 10, grid-driving integrated circuit 21,22 and 23, counter 30, frame buffer 40 and look-up table 50.
Each grid-driving integrated circuit comprises n bar sweep trace G1, G2 ..., Gn, wherein, " n " is for being not less than 1 natural number.Each grid-driving integrated circuit is by n bar sweep trace G1, G2, Gn exports n sweep signal, each sweep signal is controlled the one-row pixels P of this sweep signal correspondence, for example, the one-row pixels P that connects of the sweep trace G1 of a sweep signal control grid-driving integrated circuit 21 of the output of the sweep trace G1 by grid-driving integrated circuit 21.
Frame buffer 40 is stored in a plurality of pixel voltages during the frame time, and a plurality of pixel voltages are outputed to data-driven integrated circuit 10 successively, when the frame time here refers to that whole sweep traces of three grid-driving integrated circuits scan in order from top to bottom, finish a picture and show the used time.
Data-driven integrated circuit 10 comprises q bar data line S1, S2 ..., Sq, wherein, " q " is for being not less than 1 natural number.A plurality of pixel voltages that data-driven integrated circuit 10 received frame impact dampers 40 are exported successively, and should output to each row pixel P successively by a plurality of pixel voltages, that is to say, during frame time, after arbitrary sweep trace that three grid-driving integrated circuits comprise is unlocked, data-driven integrated circuit 10 is by data line S1, S2, Sq outputs to the one-row pixels P that described arbitrary sweep trace connects with pixel voltage, for example, during frame time, after sweep trace G1 that grid-driving integrated circuit 21 comprises is unlocked, data-driven integrated circuit 10 is by data line S1, S2 ..., Sq outputs to the one-row pixels P that sweep trace G1 that grid-driving integrated circuit 21 comprises connects with pixel voltage.
Counter 30 detects the pixel voltage of the one-row pixels P whether pixel voltage that frame buffers 40 output to data-driven integrated circuit 10 control for m sweep signal of each grid-driving integrated circuit output, wherein, and 1≤m≤n, and " m " is natural number.
When counter 30 detects the pixel voltage that pixel voltage that frame buffer 40 outputs to data-driven integrated circuit 10 is the one-row pixels P that controls of m sweep signal of each grid-driving integrated circuit output, then according to the coordinate position at the one-row pixels P place of m sweep signal correspondence, detecting look-up table 50, the pixel voltage of the one-row pixels P that n sweep signal of one-row pixels P to the of m sweep signal control controlled reduces successively; The pixel voltage of the one-row pixels P that n sweep signal of one-row pixels P to the of m sweep signal control after reducing controlled is sent frame buffer 40 back to, and outputs to data-driven integrated circuit 10 successively by frame buffer 40.
When counter 30 detects the pixel voltage of one-row pixels P that pixel voltage that frame buffer 40 outputs to data-driven integrated circuit 10 is not m sweep signal control of each grid-driving integrated circuit output, then frame buffer 40 continues the pixel voltage of the one-row pixels P that m sweep signals of output sweep signal before controls to data-driven integrated circuit 10.
With hereinafter, will the process that driving circuit drives display panels 100 show images be described in detail.
Table 1 shows grid-driving integrated circuit 21 according to an embodiment of the invention, when each bar sweep trace of 22 and 23 is opened, the pixel voltage that data-driven integrated circuit 10 provides to every capable pixel P.Wherein, " n " can be made as 768, " m " is made as 765.Should be appreciated that in the present invention the value of " n ", " m " is not as limit.
In the table 1, the unit of pixel voltage is " volt ".
[table 1]
During frame time, grid-driving integrated circuit 21,22 and 23 is applied to 2304 sweep signals on 2304 sweep traces successively, and each sweep signal is controlled the one-row pixels P that sweep trace that this sweep signal is applied to connects.Frame buffer 40 is stored in a plurality of pixel voltages during the frame time, and a plurality of pixel voltages are outputed to data-driven integrated circuit 10 successively.Data-driven integrated circuit 10 passes through q bar data line S1, S2 ..., Sq output pixel voltage is to each the row pixel P that is opened by sweep signal.
Suppose that display panels shows 240 GTGs, data-driven integrated circuit 10 should all be 6.8V to the pixel voltage of each row pixel P output.In the present embodiment, grid-driving integrated circuit 22 and grid-driving integrated circuit 23 range data drive integrated circults 10 are far away, owing to there is RC delay, so grid-driving integrated circuit 22 or grid-driving integrated circuit 23 can make the duration of charging deficiency of several capable pixel P that these several sweep traces are connected when opening former sweep traces that comprise separately.Pixel voltage in data-driven integrated circuit more than 10 capable pixel P outputs to this all is under the prerequisite of 6.8V, owing to the duration of charging deficiency to these several capable pixel P, causes the display brightness of these several capable pixel P to descend.
Therefore, when counter 30 detects the pixel voltage of one-row pixels P that pixel voltage that frame buffer 40 outputs to data-driven integrated circuit 10 is the 765th sweep signal control of grid-driving integrated circuit 21,22 or 23 outputs, then according to the coordinate position at the one-row pixels P place of the 765th sweep signal correspondence, detecting look-up table 50 is reduced to 6.78V, 6.76V, 6.74V, 6.72V successively with the pixel voltage of the one-row pixels P of 768 sweep signals controls of one-row pixels P to the of the 765th sweep signal control; Send pixel voltage 6.78V, 6.76V, 6.74V, 6.72V after reducing back to frame buffer 40, and outputing to data-driven integrated circuit 10 successively by frame buffer 40, pixel voltage 6.78V, 6.76V, 6.74V, the 6.72V after data-driven integrated circuit 10 will reduce outputs to the one-row pixels P of the correspondence that grid-driving integrated circuit 21,22 or 23 sweep trace G765, G766, G767, G768 open.
So, the brightness of the brightness of the four lines pixel P of sweep trace G765, the G766 of grid-driving integrated circuit 21, G767, the G768 correspondence first few lines pixel P corresponding with former sweep traces of grid-driving integrated circuit 22 forms gradual change and has eliminated horizontal black-tape.For example, former sweep traces of grid-driving integrated circuit 22 can be preceding four sweep trace G1, G2, G3, the G4 of grid-driving integrated circuit 22, and then the brightness of the brightness of the four lines pixel P of sweep trace G765, the G766 of grid-driving integrated circuit 21, G767, the G768 correspondence preceding four lines pixel P corresponding with preceding four sweep trace G1, G2, G3, the G4 of grid-driving integrated circuit 22 forms gradual change and eliminated horizontal black-tape.In like manner, the brightness of the brightness of the four lines pixel P of sweep trace G765, the G766 of grid-driving integrated circuit 22, G767, the G768 correspondence first few lines pixel P corresponding with former sweep traces of grid-driving integrated circuit 23 forms gradual change and has eliminated horizontal black-tape.For example, former sweep traces of grid-driving integrated circuit 23 can be preceding four sweep trace G1, G2, G3, the G4 of grid-driving integrated circuit 23, and then the brightness of the brightness of the four lines pixel P of sweep trace G765, the G766 of grid-driving integrated circuit 22, G767, the G768 correspondence preceding four lines pixel P corresponding with preceding four sweep trace G1, G2, G3, the G4 of grid-driving integrated circuit 23 forms gradual change and eliminated horizontal black-tape.And then making display panels 100 when showing, integral body has been eliminated the horizontal black-tape on the picture.
In addition, when counter 30 detects pixel voltage that frame buffer 40 outputs to data-driven integrated circuit 10 and is not the pixel voltage of one-row pixels P of the 765th sweep signal control of grid-driving integrated circuit 21,22 or 23 outputs, then the pixel voltage 6.8V of the one-row pixels P of the sweep signal control before the 765th sweep signal of frame buffer 40 continuation outputs is to data-driven integrated circuit 10, and data-driven integrated circuit 10 output pixel voltage 6.8V are to the one-row pixels P that is opened by the sweep signal before the 765th sweep signal.
In addition, be to be understood that, in the present invention, the quantity of grid-driving integrated circuit is not limited with the quantity that limits in the present embodiment, can increase and decrease the quantity of grid-driving integrated circuit according to the size of display panels, for example, for larger sized display panels, the quantity of grid-driving integrated circuit can be four, five or more.
Hereinafter, will the method for the horizontal black-tape of LCD that improves embodiments of the invention be described in detail.
Fig. 3 shows the process flow diagram of the method for the horizontal black-tape of LCD that improves embodiments of the invention.
As shown in Figure 3, described method comprises step:
S1: each grid-driving integrated circuit is by n sweep signal of n bar sweep trace output, and each sweep signal is controlled the one-row pixels of this sweep signal correspondence;
S2: frame buffer outputs to data-driven integrated circuit successively with a plurality of pixel voltages;
S3: a plurality of pixel voltages that data-driven integrated circuit received frame impact damper is exported successively also should output to each row pixel by a plurality of pixel voltages successively;
S4: counter detects the pixel voltage of the one-row pixels whether pixel voltage that frame buffer outputs to data-driven integrated circuit control for m sweep signal of each grid-driving integrated circuit output;
In step S4, if the pixel voltage of the one-row pixels of m the sweep signal control that the pixel voltage of frame buffer output is each grid-driving integrated circuit to be exported, then execution in step S5 and S6.Wherein, step S5: according to the coordinate position at the one-row pixels place of m sweep signal correspondence, the detecting look-up table, the pixel voltage of the one-row pixels that one-row pixels to the n sweep signal of m sweep signal control controlled reduces successively; Step S6: the pixel voltage of the one-row pixels of one-row pixels to the n sweep signal control of m sweep signal control after will reducing is sent frame buffer back to, and outputs to data-driven integrated circuit successively by frame buffer.
In step S4, if the pixel voltage of the one-row pixels of m the sweep signal control that the pixel voltage of frame buffer output is not each grid-driving integrated circuit to be exported then returns step S2.
Although specifically shown with reference to its exemplary embodiment and described the present invention, but it should be appreciated by those skilled in the art, under the situation that does not break away from the spirit and scope of the present invention that claim limits, can carry out various changes on form and the details to it.
Claims (8)
1. method of improving the horizontal black-tape of LCD, this LCD comprises: several grid-driving integrated circuits, frame buffer, data-driven integrated circuit, counter and look-up table, wherein, each grid-driving integrated circuit comprises n bar sweep trace, and n is not less than 1 natural number;
It is characterized in that described method comprises step:
A) each grid-driving integrated circuit is by n sweep signal of n bar sweep trace output, and each sweep signal is controlled the one-row pixels of this sweep signal correspondence;
B) frame buffer is exported a plurality of pixel voltages successively to data-driven integrated circuit;
C) a plurality of pixel voltages of exporting successively of data-driven integrated circuit received frame impact damper and should output to each capable pixel successively by a plurality of pixel voltages;
D) counter detects the pixel voltage of the one-row pixels whether pixel voltage that frame buffer outputs to data-driven integrated circuit control for m sweep signal of each grid-driving integrated circuit output, wherein, and 1≤m≤n, and m is natural number;
E) if the pixel voltage of the one-row pixels of m the sweep signal control that the pixel voltage of frame buffer output is each grid-driving integrated circuit to be exported, then according to the coordinate position at the one-row pixels place of m sweep signal correspondence, the detecting look-up table, the pixel voltage of the one-row pixels that one-row pixels to the n sweep signal of m sweep signal control controlled reduces successively;
F) pixel voltage of the one-row pixels controlled of one-row pixels to the n sweep signal of m sweep signal control after will reducing is sent frame buffer back to, and outputs to data-driven integrated circuit successively by frame buffer.
2. method according to claim 1 is characterized in that, also comprises step:
G) if the pixel voltage of the one-row pixels of m the sweep signal control that the pixel voltage of frame buffer output is not described each grid-driving integrated circuit to be exported then returns step B).
3. a driving circuit that is used for improving the horizontal black-tape of LCD is characterized in that, comprising:
Several grid-driving integrated circuits, each grid-driving integrated circuit comprises n bar sweep trace, and n is not less than 1 natural number, wherein, each grid-driving integrated circuit is by n sweep signal of n bar sweep trace output, and each sweep signal is controlled the one-row pixels of this sweep signal correspondence;
Frame buffer is stored in a plurality of pixel voltages during the frame time, and a plurality of pixel voltages are outputed to data-driven integrated circuit successively;
A plurality of pixel voltages that data-driven integrated circuit, received frame impact damper are exported successively also should output to each row pixel by a plurality of pixel voltages successively;
The pixel voltage of the one-row pixels whether counter, the pixel voltage that detects frame buffer output are controlled for m sweep signal of each grid-driving integrated circuit output, wherein, 1≤m≤n, and m is natural number;
Look-up table according to the result that counter detects, judges whether that the pixel voltage of one-row pixels that one-row pixels to the n sweep signal of m sweep signal control controlled reduces successively.
4. driving circuit according to claim 3, it is characterized in that, the pixel voltage that detects frame buffer output when counter is the pixel voltage of the one-row pixels controlled of m sweep signal of each grid-driving integrated circuit output, then according to the coordinate position at the one-row pixels place of m sweep signal correspondence, the detecting look-up table, the pixel voltage of the one-row pixels that one-row pixels to the n sweep signal of m sweep signal control controlled reduces successively; The pixel voltage of the one-row pixels that one-row pixels to the n sweep signal of m sweep signal control after reducing controlled is sent frame buffer back to, and outputs to data-driven integrated circuit successively by frame buffer.
5. driving circuit according to claim 3, it is characterized in that, the pixel voltage that detects frame buffer output when counter is not the pixel voltage of one-row pixels of m sweep signal control of described each grid-driving integrated circuit output, and then frame buffer continues the pixel voltage of the one-row pixels that m sweep signal of output sweep signal before controls to data-driven integrated circuit.
6. a LCD is characterized in that, comprising:
Display panels comprises a plurality of pixels, and described a plurality of pixels are arranged with array format;
Several grid-driving integrated circuits, each grid-driving integrated circuit comprises n bar sweep trace, n is not less than 1 natural number, wherein, each grid-driving integrated circuit is by it n sweep signal of n bar sweep trace output that comprises, each sweep signal is controlled the one-row pixels of this sweep signal correspondence;
Frame buffer is stored in a plurality of pixel voltages during the frame time, and a plurality of pixel voltages are outputed to data-driven integrated circuit successively;
A plurality of pixel voltages that data-driven integrated circuit, received frame impact damper are exported successively also should output to each row pixel by a plurality of pixel voltages successively;
The pixel voltage of the one-row pixels whether counter, the pixel voltage that detects frame buffer output are controlled for m sweep signal of each grid-driving integrated circuit output, wherein, 1≤m≤n, and m is natural number;
Look-up table according to the result that counter detects, judges whether that the pixel voltage of one-row pixels that one-row pixels to the n sweep signal of m sweep signal control controlled reduces successively.
7. LCD according to claim 6, it is characterized in that, the pixel voltage that detects frame buffer output when counter is the pixel voltage of the one-row pixels controlled of m sweep signal of each grid-driving integrated circuit output, then according to the coordinate position at the one-row pixels place of m sweep signal correspondence, the detecting look-up table, the pixel voltage of the one-row pixels that one-row pixels to the n sweep signal of m sweep signal control controlled reduces successively; The pixel voltage of the one-row pixels that one-row pixels to the n sweep signal of m sweep signal control after reducing controlled is sent frame buffer back to, and outputs to data-driven integrated circuit successively by frame buffer.
8. LCD according to claim 6, it is characterized in that, the pixel voltage that detects frame buffer output when counter is not the pixel voltage of one-row pixels of m sweep signal control of described each grid-driving integrated circuit output, and then frame buffer continues the pixel voltage of the one-row pixels that m sweep signal of output sweep signal before controls to data-driven integrated circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310145096.6A CN103197456B (en) | 2013-04-24 | 2013-04-24 | Liquid crystal display and improve method, the driving circuit of liquid crystal display horizontal black bars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310145096.6A CN103197456B (en) | 2013-04-24 | 2013-04-24 | Liquid crystal display and improve method, the driving circuit of liquid crystal display horizontal black bars |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103197456A true CN103197456A (en) | 2013-07-10 |
| CN103197456B CN103197456B (en) | 2016-03-30 |
Family
ID=48720129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310145096.6A Active CN103197456B (en) | 2013-04-24 | 2013-04-24 | Liquid crystal display and improve method, the driving circuit of liquid crystal display horizontal black bars |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103197456B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9742686B2 (en) | 2013-09-26 | 2017-08-22 | International Business Machines Corporation | Enhanced mechanisms for granting access to shared resources |
| CN110853594A (en) * | 2019-11-29 | 2020-02-28 | 京东方科技集团股份有限公司 | Display driving method, circuit and display device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1391204A (en) * | 2001-06-09 | 2003-01-15 | Lg.飞利浦Lcd有限公司 | Method and device for color calibration of LCD |
| CN1690816A (en) * | 2004-04-21 | 2005-11-02 | 钰瀚科技股份有限公司 | Quick gray scale transform method for liquid crystal display |
| JP2009008869A (en) * | 2007-06-28 | 2009-01-15 | Sharp Corp | Liquid crystal display and driving circuit and driving method thereof |
| US20090146938A1 (en) * | 2007-12-10 | 2009-06-11 | Hitachi Displays, Ltd. | Display device |
| CN202003648U (en) * | 2011-01-28 | 2011-10-05 | 深圳华映显示科技有限公司 | Pixel structure with precharge function |
-
2013
- 2013-04-24 CN CN201310145096.6A patent/CN103197456B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1391204A (en) * | 2001-06-09 | 2003-01-15 | Lg.飞利浦Lcd有限公司 | Method and device for color calibration of LCD |
| CN1690816A (en) * | 2004-04-21 | 2005-11-02 | 钰瀚科技股份有限公司 | Quick gray scale transform method for liquid crystal display |
| JP2009008869A (en) * | 2007-06-28 | 2009-01-15 | Sharp Corp | Liquid crystal display and driving circuit and driving method thereof |
| US20090146938A1 (en) * | 2007-12-10 | 2009-06-11 | Hitachi Displays, Ltd. | Display device |
| CN202003648U (en) * | 2011-01-28 | 2011-10-05 | 深圳华映显示科技有限公司 | Pixel structure with precharge function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9742686B2 (en) | 2013-09-26 | 2017-08-22 | International Business Machines Corporation | Enhanced mechanisms for granting access to shared resources |
| CN110853594A (en) * | 2019-11-29 | 2020-02-28 | 京东方科技集团股份有限公司 | Display driving method, circuit and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103197456B (en) | 2016-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102556084B1 (en) | Display device capable of changing frame rate and operating method thereof | |
| WO2021000632A1 (en) | Liquid crystal display panel and method for improving dynamic picture tailing of liquid crystal display panel | |
| US10403218B2 (en) | Mura compensation circuit and method, driving circuit and display device | |
| US10332466B2 (en) | Method of driving display panel and display apparatus for performing the same | |
| CN1909054B (en) | Liquid crystal display and method for driving the same | |
| US9875680B2 (en) | Method and apparatus for generation of gray scale adjustment voltage and panel driver circuit | |
| US7804474B2 (en) | Overdriving circuit and method for source drivers | |
| US20120188224A1 (en) | Data processing method, data driving circuit performing the same and display apparatus having the data driving circuit | |
| CN101320539A (en) | Display and method of driving the same | |
| KR102075545B1 (en) | Display device | |
| US20150235590A1 (en) | Display panel and gate driver | |
| US20160343341A1 (en) | Gate driving device, display device including the same, and method for driving the display device for reducing kickback voltage | |
| CN102347013A (en) | Liquid crystal display device and signal driving method thereof | |
| CN105825803A (en) | Display apparatus | |
| KR102362880B1 (en) | Display apparatus and method of driving display panel using the same | |
| US20100220045A1 (en) | Display device | |
| US9659516B2 (en) | Drive device of display panel, display device including the same, and drive method of display panel | |
| US8009155B2 (en) | Output buffer of a source driver applied in a display | |
| US20040201563A1 (en) | Display apparatus | |
| KR102320146B1 (en) | Data integrated circuit and display device comprising the data integrated circuit thereof | |
| KR101399237B1 (en) | Liquid crystal display device and method driving of the same | |
| CN103197456A (en) | Liquid crystal display as well as method for improving horizontal black belt of liquid crystal display and drive circuit | |
| US8102342B2 (en) | Display apparatus including a driver using a lookup table | |
| US10332472B2 (en) | Display device and method of driving the same | |
| US20090135121A1 (en) | Driving circuit and related method of a display apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |