CN103197456B - Liquid crystal display and improve method, the driving circuit of liquid crystal display horizontal black bars - Google Patents
Liquid crystal display and improve method, the driving circuit of liquid crystal display horizontal black bars Download PDFInfo
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Abstract
The present invention discloses a kind of liquid crystal display and improves method, the driving circuit of liquid crystal display horizontal black bars.This liquid crystal display comprises display panels, comprises multiple pixels of array arrangement; Several grid-driving integrated circuits, each grid-driving integrated circuit exports n sweep signal by n bar sweep trace, and each sweep signal controls one-row pixels; Frame buffer, outputs to data-driven integrated circuit successively by multiple pixel voltage; Data-driven integrated circuit, outputs to every one-row pixels successively by multiple pixel voltage; Counter, detects the pixel voltage whether pixel voltage that frame buffer exports is the one-row pixels of m sweep signal control, 1≤m≤n; Look-up table, according to the result that counter detects, judges whether that the pixel voltage of the one-row pixels that one-row pixels to the n-th sweep signal m sweep signal controlled controls reduces successively.So, the horizontal black bars of liquid crystal display can be improved, improve the quality of display frame.
Description
Technical field
The present invention relates to field of liquid crystal display.More particularly, relate to a kind of liquid crystal display and improve method, the driving circuit of liquid crystal display horizontal black bars.
Background technology
At present, the size of the liquid crystal display (LCD) being main type of drive with thin-film transistors (TFT) is increasing, and resolution is also more and more higher.Equivalent resistance on corresponding transmission path and equivalent capacity load also increasing, the grid control signal that the data-signal (i.e. pixel voltage) causing data-driven integrated circuit (DataIC) to export like this and grid-driving integrated circuit (GateIC) export all can morph, and this phenomenon is commonly referred to RCdelay.
When resolution and the size increase of liquid crystal display time, RCdelay also becomes large, above-mentioned variation aggravation.In the transmitting procedure of the cut-in voltage (VGH) of the grid of TFT, because the existence of RCdelay, the cut-in voltage of the actual output of adjacent two GateIC is different, like this within the identical duration of charging, the sweep trace receiving lower cut-in voltage (being generally the cut-in voltage that the GateIC away from DataIC exports lower) is not enough to the duration of charging of pixel.According to the pixel voltage of liquid crystal display and the relation of brightness, the pixel caused at the adjacent of two GateIC is produced brightness (GTG) saltus step by how many difference of charging, and shows as horizontal black bars (H-Block).Horizontal black bars (H-block) can reduce the picture quality of liquid crystal display, affects its competitive power, needs to be improved.
Summary of the invention
In order to solve above-mentioned prior art Problems existing, the object of the present invention is to provide a kind of method improving liquid crystal display horizontal black bars, this liquid crystal display 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, n be not less than 1 natural number; Described method comprises step: A) each grid-driving integrated circuit is by n bar sweep trace output n sweep signal, and each sweep signal controls one-row pixels corresponding to this sweep signal; B) frame buffer exports multiple pixel voltage successively to data-driven integrated circuit; C) multiple pixel voltage of exporting successively of data-driven integrated circuit receiving-frame buffer the plurality of pixel voltage is outputted to every one-row pixels successively; D) counter detects the pixel voltage whether pixel voltage that frame buffer outputs to data-driven integrated circuit is the one-row pixels of m the sweep signal control that each grid-driving integrated circuit exports, 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 that frame buffer exports is each grid-driving integrated circuit to be exported, then according to the coordinate position at one-row pixels place corresponding to m sweep signal, detecting look-up table, the pixel voltage of the one-row pixels that one-row pixels to the n-th sweep signal m sweep signal controlled controls reduces successively; The pixel voltage of the one-row pixels F) one-row pixels to the n-th sweep signal that m sweep signal after reduction controls controlled sends frame buffer back to, and outputs to data-driven integrated circuit successively by frame buffer.
In addition, described method also comprises step: G) if the pixel voltage of the one-row pixels of m the sweep signal control that the pixel voltage that frame buffer exports is not described each grid-driving integrated circuit to be exported, then return step B).
Another object of the present invention is also to provide a kind of driving circuit for improving liquid crystal display horizontal black bars, comprise: several grid-driving integrated circuits, each grid-driving integrated circuit comprises n bar sweep trace, n be not less than 1 natural number, wherein, each grid-driving integrated circuit exports n sweep signal by n bar sweep trace, and each sweep signal controls one-row pixels corresponding to this sweep signal; Frame buffer, the multiple pixel voltages during being stored in frame time, and multiple pixel voltage is outputted to data-driven integrated circuit successively; Data-driven integrated circuit, the plurality of pixel voltage is also outputted to every one-row pixels by multiple pixel voltage that receiving-frame buffer exports successively successively; Counter, detects the pixel voltage whether pixel voltage that frame buffer exports is the one-row pixels of m the sweep signal control that each grid-driving integrated circuit exports, wherein, and 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 the one-row pixels that one-row pixels to the n-th sweep signal m sweep signal controlled controls reduces successively.
In addition, when counter detects that pixel voltage that frame buffer exports is the pixel voltage of the one-row pixels of m the sweep signal control that each grid-driving integrated circuit exports, then according to the coordinate position at one-row pixels place corresponding to m sweep signal, detecting look-up table, the pixel voltage of the one-row pixels that one-row pixels to the n-th sweep signal m sweep signal controlled controls reduces successively; The pixel voltage of one-row pixels one-row pixels to the n-th sweep signal that m sweep signal after reducing controls controlled sends frame buffer back to, and outputs to data-driven integrated circuit successively by frame buffer.
In addition, when counter detects that pixel voltage that frame buffer exports is not the pixel voltage of the one-row pixels that m sweep signal that described each grid-driving integrated circuit exports controls, then frame buffer continues the pixel voltage of the one-row pixels of the sweep signal control before output m sweep signal to data-driven integrated circuit.
Another object of the present invention is also to provide a kind of liquid crystal display, comprising: display panels, comprises multiple pixel, and described multiple pixel is arranged in the form of an array; Several grid-driving integrated circuits, each grid-driving integrated circuit comprises n bar sweep trace, n be not less than 1 natural number, wherein, each grid-driving integrated circuit exports n sweep signal by it n bar sweep trace comprised, and each sweep signal controls one-row pixels corresponding to this sweep signal; Frame buffer, the multiple pixel voltages during being stored in frame time, and multiple pixel voltage is outputted to data-driven integrated circuit successively; Data-driven integrated circuit, the plurality of pixel voltage is also outputted to every one-row pixels by multiple pixel voltage that receiving-frame buffer exports successively successively; Counter, detects the pixel voltage whether pixel voltage that frame buffer exports is the one-row pixels of m the sweep signal control that each grid-driving integrated circuit exports, wherein, and 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 the one-row pixels that one-row pixels to the n-th sweep signal m sweep signal controlled controls reduces successively.
In addition, when counter detects that pixel voltage that frame buffer exports is the pixel voltage of the one-row pixels of m the sweep signal control that each grid-driving integrated circuit exports, then according to the coordinate position at one-row pixels place corresponding to m sweep signal, detecting look-up table, the pixel voltage of the one-row pixels that one-row pixels to the n-th sweep signal m sweep signal controlled controls reduces successively; The pixel voltage of one-row pixels one-row pixels to the n-th sweep signal that m sweep signal after reducing controls controlled sends frame buffer back to, and outputs to data-driven integrated circuit successively by frame buffer.
In addition, when counter detects that pixel voltage that frame buffer exports is not the pixel voltage of the one-row pixels that m sweep signal that described each grid-driving integrated circuit exports controls, then frame buffer continues the pixel voltage of the one-row pixels of the sweep signal control before output m sweep signal to data-driven integrated circuit.
According to liquid crystal display of the present invention and the method, the driving circuit that improve liquid crystal display horizontal black bars, the horizontal black bars (H-Block) of liquid crystal display can be improved, improve the quality of display frame.
Accompanying drawing explanation
Fig. 1 shows the schematic diagram of liquid crystal display according to an embodiment of the invention.
Fig. 2 shows the schematic diagram of driving circuit according to an embodiment of the invention.
Fig. 3 shows the process flow diagram of the method for the liquid crystal display horizontal black bars improving embodiments of the invention.
Embodiment
Be described in detail embodiments of the invention now, its sample table shows in the accompanying drawings, and wherein, identical label represents same parts all the time.Be described to explain the present invention to embodiment below with reference to the accompanying drawings.In the following description, obscuring of the present invention's design that the unnecessary detailed description in order to avoid known features and/or function causes, can omit the unnecessary detailed description of known features and/or function.
Fig. 1 shows the schematic diagram of liquid crystal display according to an embodiment of the invention.
As shown in Figure 1, liquid crystal display comprises display panels 100 and drives the driving circuit of this display panels 100 display according to an embodiment of the invention.When display panels 100 shows, driving circuit can improve the horizontal black bars phenomenon that display panels 100 occurs, improves the display frame quality of display panels 100.
With hereinafter, be described in detail to above-mentioned driving circuit.
Fig. 2 shows the schematic 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.
Display panels 100 comprises multiple pixel P, and the plurality of pixel P arranges with the form of array.
Each grid-driving integrated circuit comprises n bar sweep trace G1, G2 ..., Gn, wherein, " n " natural number for being not less than 1.Each grid-driving integrated circuit is by n bar sweep trace G1, G2, Gn exports n sweep signal, each sweep signal controls one-row pixels P corresponding to this sweep signal, such as, the one-row pixels P that the sweep trace G1 of the sweep signal control gate drive integrated circult 21 exported by the sweep trace G1 of grid-driving integrated circuit 21 is connected.
Multiple pixel voltages during frame buffer 40 is stored in frame time, and multiple pixel voltage is outputted to data-driven integrated circuit 10 successively, here, when frame time refers to that whole sweep traces of three grid-driving integrated circuits scan in order from top to bottom, complete a picture and show the time used.
Data-driven integrated circuit 10 comprises q bar data line S1, S2 ..., Sq, wherein, " q " natural number for being not less than 1.Multiple pixel voltages that data-driven integrated circuit 10 receiving-frame buffer 40 exports successively, and the plurality of pixel voltage is outputted to every one-row pixels P successively, that is, during frame time, after arbitrary the sweep trace comprised when three grid-driving integrated circuits is unlocked, data-driven integrated circuit 10 is by data line S1, S2, pixel voltage is outputted to the one-row pixels P that described arbitrary sweep trace connects by Sq, such as, during frame time, after the sweep trace G1 comprised when grid-driving integrated circuit 21 is unlocked, data-driven integrated circuit 10 is by data line S1, S2, pixel voltage is outputted to the one-row pixels P of the sweep trace G1 connection that grid-driving integrated circuit 21 comprises by Sq.
Counter 30 detects the pixel voltage whether pixel voltage that frame buffer 40 outputs to data-driven integrated circuit 10 is the one-row pixels P of m the sweep signal control that each grid-driving integrated circuit exports, wherein, and 1≤m≤n, and " m " is natural number.
When counter 30 detects that pixel voltage that frame buffer 40 outputs to data-driven integrated circuit 10 is the pixel voltage of the one-row pixels P of m the sweep signal control that each grid-driving integrated circuit exports, then according to the coordinate position at one-row pixels P place corresponding to m sweep signal, detecting look-up table 50, the pixel voltage of the one-row pixels P that one-row pixels P to the n-th sweep signal m sweep signal controlled controls reduces successively; The pixel voltage of one-row pixels P one-row pixels P to the n-th sweep signal that m sweep signal after reducing controls controlled sends frame buffer 40 back to, and outputs to data-driven integrated circuit 10 successively by frame buffer 40.
When counter 30 detects that pixel voltage that frame buffer 40 outputs to data-driven integrated circuit 10 is not the pixel voltage of the one-row pixels P that m sweep signal that each grid-driving integrated circuit exports controls, then frame buffer 40 continues the pixel voltage of the one-row pixels P of the sweep signal control before output m sweep signal to data-driven integrated circuit 10.
With hereinafter, be described in detail driving the process of display panels 100 show image to driving circuit.
When each sweep trace that table 1 shows grid-driving integrated circuit 21,22 and 23 is according to an embodiment of the invention opened, the pixel voltage that data-driven integrated circuit 10 provides to every row pixel P.Wherein, " n " can be set to 768, " m " is set to 765.Should be appreciated that in the present invention, the value of " n ", " m " is not as limit.
In table 1, the unit of pixel voltage is " volt ".
[table 1]
During frame time, 2304 sweep signals are applied on 2304 sweep traces by grid-driving integrated circuit 21,22 and 23 successively, and each sweep signal controls the one-row pixels P of the sweep trace connection that this sweep signal is applied to.Multiple pixel voltages during frame buffer 40 is stored in frame time, and multiple pixel voltage is outputted 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 the every one-row pixels P opened by sweep signal.
Suppose that display panels shows 240 GTGs, the pixel voltage that data-driven integrated circuit 10 should export to every one-row pixels P is all 6.8V.In the present embodiment, grid-driving integrated circuit 22 and grid-driving integrated circuit 23 range data drive integrated circult 10 far away, owing to there is RCdelay, therefore grid-driving integrated circuit 22 or grid-driving integrated circuit 23 can make the duration of charging of a few row pixel P that these several sweep traces connect not enough when opening former the sweep traces comprised separately.Under the prerequisite that data-driven integrated circuit 10 is all 6.8V to the pixel voltage that this few row pixel P exports, due to not enough to the duration of charging of this few row pixel P, the display brightness of this few row pixel P is caused to decline.
Therefore, when counter 30 detects that pixel voltage that frame buffer 40 outputs to data-driven integrated circuit 10 is the pixel voltage of the one-row pixels P that the 765th sweep signal that grid-driving integrated circuit 21,22 or 23 exports controls, then according to the coordinate position at one-row pixels P place corresponding to the 765th sweep signal, detecting look-up table 50, the pixel voltage of the one-row pixels P controlled to the 768th sweep signal by the one-row pixels P that the 765th sweep signal controls is reduced to 6.78V, 6.76V, 6.74V, 6.72V successively; Send pixel voltage 6.78V, 6.76V, 6.74V, 6.72V after reducing back to frame buffer 40, and output to data-driven integrated circuit 10 successively by frame buffer 40, the one-row pixels P of the correspondence that sweep trace G765, G766, G767, G768 that pixel voltage 6.78V, 6.76V, 6.74V, the 6.72V after reduction outputs to grid-driving integrated circuit 21,22 or 23 open by data-driven integrated circuit 10.
So, the brightness of the brightness of the four lines pixel P that sweep trace G765, G766, G767, G768 of grid-driving integrated circuit 21 are corresponding and first few lines pixel P corresponding to former sweep traces of grid-driving integrated circuit 22 forms gradual change and eliminates horizontal black bars.Such as, former sweep traces of grid-driving integrated circuit 22 can be front four sweep traces G1, G2, G3, G4 of grid-driving integrated circuit 22, then the brightness of the front four lines pixel P that the brightness of the four lines pixel P that sweep trace G765, G766, G767, G768 of grid-driving integrated circuit 21 are corresponding is corresponding with front four sweep traces G1, G2, G3, G4 of grid-driving integrated circuit 22 forms gradual change and eliminates horizontal black bars.In like manner, the brightness of the brightness of the four lines pixel P that sweep trace G765, G766, G767, G768 of grid-driving integrated circuit 22 are corresponding and first few lines pixel P corresponding to former sweep traces of grid-driving integrated circuit 23 forms gradual change and eliminates horizontal black bars.Such as, former sweep traces of grid-driving integrated circuit 23 can be front four sweep traces G1, G2, G3, G4 of grid-driving integrated circuit 23, then the brightness of the front four lines pixel P that the brightness of the four lines pixel P that sweep trace G765, G766, G767, G768 of grid-driving integrated circuit 22 are corresponding is corresponding with front four sweep traces G1, G2, G3, G4 of grid-driving integrated circuit 23 forms gradual change and eliminates horizontal black bars.And then making display panels 100 when showing, entirety eliminates the horizontal black bars on picture.
In addition, when counter 30 detects that pixel voltage that frame buffer 40 outputs to data-driven integrated circuit 10 is not the pixel voltage of the one-row pixels P that the 765th sweep signal that grid-driving integrated circuit 21,22 or 23 exports controls, then frame buffer 40 continues the pixel voltage 6.8V of the one-row pixels P that the sweep signal before output the 765th sweep signal controls to data-driven integrated circuit 10, and data-driven integrated circuit 10 output pixel voltage 6.8V is to the one-row pixels P 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 limited in the present embodiment, the quantity of grid-driving integrated circuit can be increased and decreased according to the size of display panels, such as, for larger sized display panels, the quantity of grid-driving integrated circuit can be four, five or more.
Hereinafter, describe in detail to the method for the liquid crystal display horizontal black bars improving embodiments of the invention.
Fig. 3 shows the process flow diagram of the method for the liquid crystal display horizontal black bars improving embodiments of the invention.
As shown in Figure 3, described method comprises step:
S1: each grid-driving integrated circuit exports n sweep signal by n bar sweep trace, and each sweep signal controls one-row pixels corresponding to this sweep signal;
S2: multiple pixel voltage is outputted to data-driven integrated circuit by frame buffer successively;
S3: the plurality of pixel voltage is also outputted to every one-row pixels by multiple pixel voltage that data-driven integrated circuit receiving-frame buffer exports successively successively;
S4: counter detects the pixel voltage whether pixel voltage that frame buffer outputs to data-driven integrated circuit is the one-row pixels of m the sweep signal control that each grid-driving integrated circuit exports;
In step s 4 which, if the pixel voltage of the one-row pixels of m the sweep signal control that the pixel voltage that frame buffer exports is each grid-driving integrated circuit to be exported, then step S5 and S6 is performed.Wherein, step S5: according to the coordinate position at one-row pixels place corresponding to m sweep signal, detecting look-up table, the pixel voltage of the one-row pixels of one-row pixels to the n-th sweep signal control m sweep signal controlled reduces successively; Step S6: the pixel voltage of one-row pixels one-row pixels to the n-th sweep signal that m sweep signal after reducing controls controlled sends frame buffer back to, and outputs to data-driven integrated circuit successively by frame buffer.
In step s 4 which, if the pixel voltage of the one-row pixels of m the sweep signal control that the pixel voltage that frame buffer exports is not each grid-driving integrated circuit to be exported, then step S2 is returned.
Although specifically show with reference to its exemplary embodiment and describe the present invention, but it should be appreciated by those skilled in the art, when not departing from the spirit and scope of the present invention that claim limits, the various changes in form and details can be carried out to it.
Claims (8)
1. one kind is improved the method for liquid crystal display horizontal black bars, this liquid crystal display 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, n be not less than 1 natural number;
It is characterized in that, the described method improving liquid crystal display horizontal black bars comprises step:
A) each grid-driving integrated circuit exports n sweep signal by n bar sweep trace, and each sweep signal controls one-row pixels corresponding to this sweep signal;
B) frame buffer exports multiple pixel voltage successively to data-driven integrated circuit;
C) multiple pixel voltage of exporting successively of data-driven integrated circuit receiving-frame buffer the plurality of pixel voltage is outputted to every one-row pixels successively;
D) counter detects the pixel voltage whether pixel voltage that frame buffer outputs to data-driven integrated circuit is the one-row pixels of m the sweep signal control that each grid-driving integrated circuit exports, 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 that frame buffer exports is each grid-driving integrated circuit to be exported, then according to the coordinate position at one-row pixels place corresponding to m sweep signal, detecting look-up table, the pixel voltage of the one-row pixels that one-row pixels to the n-th sweep signal m sweep signal controlled controls reduces successively;
The pixel voltage of the one-row pixels F) one-row pixels to the n-th sweep signal that m sweep signal after reduction controls controlled sends frame buffer back to, and outputs to data-driven integrated circuit successively by frame buffer.
2. the method improving liquid crystal display horizontal black bars according to claim 1, is characterized in that, also comprise step:
G) if the pixel voltage of the one-row pixels of m the sweep signal control that the pixel voltage that frame buffer exports is not described each grid-driving integrated circuit to be exported, then step B is returned).
3. for improving a driving circuit for liquid crystal display horizontal black bars, it is characterized in that, comprising:
Several grid-driving integrated circuits, each grid-driving integrated circuit comprises n bar sweep trace, n be not less than 1 natural number, wherein, each grid-driving integrated circuit exports n sweep signal by n bar sweep trace, and each sweep signal controls one-row pixels corresponding to this sweep signal;
Frame buffer, the multiple pixel voltages during being stored in frame time, and multiple pixel voltage is outputted to data-driven integrated circuit successively;
Data-driven integrated circuit, the plurality of pixel voltage is also outputted to every one-row pixels by multiple pixel voltage that receiving-frame buffer exports successively successively;
Counter, detects the pixel voltage whether pixel voltage that frame buffer exports is the one-row pixels of m the sweep signal control that each grid-driving integrated circuit exports, wherein, and 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 the one-row pixels that one-row pixels to the n-th sweep signal m sweep signal controlled controls reduces successively.
4. the driving circuit for improving liquid crystal display horizontal black bars according to claim 3, it is characterized in that, when counter detects that pixel voltage that frame buffer exports is the pixel voltage of the one-row pixels of m the sweep signal control that each grid-driving integrated circuit exports, then according to the coordinate position at one-row pixels place corresponding to m sweep signal, detecting look-up table, the pixel voltage of the one-row pixels that one-row pixels to the n-th sweep signal m sweep signal controlled controls reduces successively; The pixel voltage of one-row pixels one-row pixels to the n-th sweep signal that m sweep signal after reducing controls controlled sends frame buffer back to, and outputs to data-driven integrated circuit successively by frame buffer.
5. the driving circuit for improving liquid crystal display horizontal black bars according to claim 3, it is characterized in that, when counter detects that pixel voltage that frame buffer exports is not the pixel voltage of the one-row pixels that m sweep signal that described each grid-driving integrated circuit exports controls, then frame buffer continues the pixel voltage of the one-row pixels of the sweep signal control before output m sweep signal to data-driven integrated circuit.
6. a liquid crystal display, comprising:
Display panels, comprises multiple pixel, and described multiple pixel is arranged in the form of an array;
Several grid-driving integrated circuits, each grid-driving integrated circuit comprises n bar sweep trace, n be not less than 1 natural number, wherein, each grid-driving integrated circuit exports n sweep signal by it n bar sweep trace comprised, and each sweep signal controls one-row pixels corresponding to this sweep signal;
It is characterized in that, described liquid crystal display also comprises:
Frame buffer, the multiple pixel voltages during being stored in frame time, and multiple pixel voltage is outputted to data-driven integrated circuit successively;
Data-driven integrated circuit, the plurality of pixel voltage is also outputted to every one-row pixels by multiple pixel voltage that receiving-frame buffer exports successively successively;
Counter, detects the pixel voltage whether pixel voltage that frame buffer exports is the one-row pixels of m the sweep signal control that each grid-driving integrated circuit exports, wherein, and 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 the one-row pixels that one-row pixels to the n-th sweep signal m sweep signal controlled controls reduces successively.
7. liquid crystal display according to claim 6, it is characterized in that, when counter detects that pixel voltage that frame buffer exports is the pixel voltage of the one-row pixels of m the sweep signal control that each grid-driving integrated circuit exports, then according to the coordinate position at one-row pixels place corresponding to m sweep signal, detecting look-up table, the pixel voltage of the one-row pixels that one-row pixels to the n-th sweep signal m sweep signal controlled controls reduces successively; The pixel voltage of one-row pixels one-row pixels to the n-th sweep signal that m sweep signal after reducing controls controlled sends frame buffer back to, and outputs to data-driven integrated circuit successively by frame buffer.
8. liquid crystal display according to claim 6, it is characterized in that, when counter detects that pixel voltage that frame buffer exports is not the pixel voltage of the one-row pixels that m sweep signal that described each grid-driving integrated circuit exports controls, then frame buffer continues the pixel voltage of the one-row pixels of the sweep signal control before output m sweep signal to data-driven integrated circuit.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 | Method of fast gray-scale conversion of liquid crystal display |
| 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 |
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| JP2009008869A (en) * | 2007-06-28 | 2009-01-15 | Sharp Corp | Liquid crystal display and driving circuit and driving method thereof |
| JP2009139774A (en) * | 2007-12-10 | 2009-06-25 | Hitachi Displays Ltd | Display device |
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| 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 | Method of fast gray-scale conversion of liquid crystal display |
| 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 |
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