CN100580763C - LCD and drive method thereof - Google Patents
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- CN100580763C CN100580763C CN200810080414A CN200810080414A CN100580763C CN 100580763 C CN100580763 C CN 100580763C CN 200810080414 A CN200810080414 A CN 200810080414A CN 200810080414 A CN200810080414 A CN 200810080414A CN 100580763 C CN100580763 C CN 100580763C
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Abstract
The invention relates a liquid crystal display device and a driving method thereof. The driving method of the liquid crystal display device provided by the invention comprises steps of transmitting image data to the liquid crystal display device via first frequency, processing the image data to generate bright area images according to the first frequency and a first gamma lookup table, transmitting the image data to the liquid crystal display device via the first frequency and processing the image data to generate dark area images according to the first frequency and the first gamma lookup table, sequentially superposing the bright area images and the dark area images, and displaying the images on a display panel of the liquid crystal display device.
Description
Technical field
The invention relates to a kind of Liquid Crystal Display And Method For Driving, and particularly can improve the LCD Liquid Crystal Display And Method For Driving of color offset phenomenon with great visual angle relevant for a kind of.
Background technology
LCD (Liquid Crystal Display, LCD) because have that high image quality, space utilization efficient are good, low consumpting power, advantageous characteristic such as radiationless, thereby become the main flow in market gradually.At present, market is towards height contrast (High Contrast Ratio) for the performance requirement of LCD, characteristic such as rapid reaction and wide viewing angle, and the technology that can reach the wide viewing angle requirement at present for example has: multi-zone vertical alignment nematic (Multi-domain Vertically Alignment, MVA), multiple domain horizontal direction matching (Multi-domain Horizontal Alignment, MHA), twisted nematic adds the visual angle and enlarges film (Twisted Nematic plus wide viewing film, TN+film) and transverse electric field form (In-PlaneSwitching, technology such as IPS).
, LCD reaches the purpose of wide viewing angle though can seeing through above-mentioned multinomial technology, but under realistic situation, because gamma curve (gamma curve) can be different with positive visual angle gamma curve with great visual angle, therefore when the user stands in the angle of deflection (for example 60 spend) comparatively and watches the shown image of LCD, its colors of image of seeing can't with watch the color of same image frame identical from the front, this kind phenomenon is exactly so-called " colour cast ".In order to improve LCD colour cast problem with great visual angle, the someone proposes to become the mode of a centre gray-scale colors with color of higher gray scale with the color mixture of low GTG at present, and develops in view of the above and two kinds of methods of improving colour cast.
The existing method of improving colour cast mainly is spatially each pixel in the display panel to be divided into two sub-pixels, and target gray scale according to each pixel, apply two sub-pixels of two different driving voltages in it respectively, make the equivalent GTG of two sub-pixels in each pixel equal its target gray scale.Though this practice can make LCD colour cast problem with great visual angle transfer to and ease up, and when the user when facing or watch the shown image frame of LCD with the angle that tilts, can see the image frame of close color, but follow this type of settling mode can reduce the screen resolution of LCD.
The another kind of existing method of improving colour cast mainly is with the frequency upgrading of the process image data twice for the frequency that transmits image data, that is change the picture update rate (frame rate) of LCD, and be superimposed as the final shown image frame of LCD with two sub-image pictures.So the practice can needn't be made zoning design at the pixel of display panel, so the screen resolution of LCD just can not descend, glimmers but follow this type of settling mode can cause the shown image frame of LCD to produce.
Summary of the invention
The invention provides a kind of driving method of LCD, it comprises the following steps: to transmit image data to LCD with first frequency, and handles described image data to produce the clear zone image frame according to the described first frequency and first gamma lookup table; Transmit described image data to LCD with described first frequency, and handle described image data to produce the dark space image frame according to the described first frequency and second gamma lookup table; Superpose in regular turn described clear zone image frame and described dark space image frame are with show image picture on the display panel of LCD.
According to one embodiment of the invention, the penetrance that same numbers GTG value is found out at described first gamma lookup table is greater than the penetrance that is found out at described second gamma lookup table, and the demonstration time of described dark space image frame is longer than the demonstration time of described clear zone image frame.
According to one embodiment of the invention, the step that produces described clear zone image frame comprises: all digital gray level values of searching described image data are distinguished corresponding penetrance in described first gamma lookup table, and the pixel of corresponding first gray scale voltage to the display panel is provided according to this.
According to one embodiment of the invention, the step that produces described dark space image frame comprises: all digital gray level values of searching described image data are distinguished corresponding penetrance in described second gamma lookup table, and the pixel of corresponding second gray scale voltage to the display panel is provided according to this.
According to one embodiment of the invention, the demonstration time ratio of described dark space image frame and described clear zone image frame is 2: 1.
According to one embodiment of the invention, the picture update rate of LCD is described first frequency, and described first frequency is 120Hz.
The present invention provides a kind of driving method of LCD in addition, and it comprises the following steps: to transmit image data to LCD with first frequency, and handles described image data to produce the clear zone image frame according to the described first frequency and first gamma lookup table; Transmit described image data to LCD with described first frequency, and handle described image data to produce the first dark space image frame according to the described first frequency and second gamma lookup table; Transmit described image data to LCD with described first frequency, and handle described image data to produce the second dark space image frame according to described first frequency and the 3rd gamma lookup table; Superpose in regular turn described clear zone image frame, the described first dark space image frame and the described second dark space image frame are with show image picture on the display panel of LCD.
According to one embodiment of the invention, the penetrance that same numbers GTG value is found out at described first gamma lookup table is greater than the penetrance that is found out at described second gamma lookup table, and the penetrance that is found out at described second gamma lookup table is greater than the penetrance that is found out at described the 3rd gamma lookup table, and the demonstration time of the described first dark space image frame adds up the demonstration time that demonstration time of the described second dark space image frame is longer than described clear zone image frame.
According to one embodiment of the invention, the step that produces described clear zone image frame comprises: all digital gray level values of searching described image data are distinguished corresponding penetrance in described first gamma lookup table, and the pixel of corresponding first gray scale voltage to the display panel is provided according to this.
According to one embodiment of the invention, the step that produces the described first dark space image frame comprises: all digital gray level values of searching described image data are distinguished corresponding penetrance in described second gamma lookup table, and the pixel of corresponding second gray scale voltage to the display panel is provided according to this.
According to one embodiment of the invention, the step that produces the described second dark space image frame comprises: all digital gray level values of searching described image data are distinguished corresponding penetrance in described the 3rd gamma lookup table, and the pixel of corresponding the 3rd gray scale voltage to the display panel is provided according to this.
According to one embodiment of the invention, the demonstration time ratio of the described first dark space image frame, the described second dark space image frame and described clear zone image frame is 1: 1: 1.
According to one embodiment of the invention, the picture update rate of LCD is described first frequency, and described first frequency is 120Hz.
The present invention provides a kind of LCD in addition, it comprises time schedule controller and display panel, wherein this time schedule controller is in order to receive the image data that transmits with first frequency, and after handling described image data according to described first frequency and itself at least the first built-in gamma lookup table and second gamma lookup table, and produce the clear zone image frame and the first dark space image frame respectively.Display panel electrically connects time schedule controller, in order to superpose described clear zone image frame and the described first dark space image frame and show image picture in regular turn.
According to one embodiment of the invention, the penetrance that same numbers GTG value is found out at described first gamma lookup table is greater than the penetrance that is found out at described second gamma lookup table, and the demonstration time of the described first dark space image frame is longer than the demonstration time of described clear zone image frame.
According to one embodiment of the invention, time schedule controller is distinguished corresponding penetrance in order to all digital gray level values of searching described image data in described first gamma lookup table, and the Controlling Source driver provides the pixel of corresponding first gray scale voltage to the display panel according to this.
According to one embodiment of the invention, time schedule controller is distinguished corresponding penetrance in order to all digital gray level values of searching described image data in described second gamma lookup table, and the Controlling Source driver provides the pixel of corresponding second gray scale voltage to the display panel according to this.
According to one embodiment of the invention, the demonstration time ratio of described first dark space image frame and described clear zone image frame is 2: 1.
According to one embodiment of the invention, the picture update rate of LCD is described first frequency, and described first frequency is 120Hz.
The present invention provides a kind of LCD in addition, it comprises time schedule controller and display panel, wherein this time schedule controller is in order to receive the image data that transmits with first frequency, and after handling described image data according to described first frequency and itself at least the first built-in gamma lookup table and second gamma lookup table, and produce the clear zone image frame and the first dark space image frame respectively, after the described first frequency of foundation and itself the 3rd built-in gamma lookup table are handled described image data, and produce the second dark space image frame.Display panel electrically connects described time schedule controller, in order to the described clear zone image frame that superposes in regular turn, the described first dark space image frame and the described second dark space image frame, and shows described image frame.
According to one embodiment of the invention, the penetrance that same numbers GTG value is found out at described first gamma lookup table is greater than the penetrance that is found out at described second gamma lookup table, and the penetrance that is found out at described second gamma lookup table is greater than the penetrance that is found out at described the 3rd gamma lookup table, and the demonstration time of the described first dark space image frame adds up the demonstration time that demonstration time of the described second dark space image frame is longer than described clear zone image frame.
According to another embodiment of the present invention, time schedule controller is distinguished corresponding penetrance in order to all digital gray level values of searching described image data in described first gamma lookup table, and the Controlling Source driver provides the pixel of corresponding first gray scale voltage to the display panel according to this.
According to another embodiment of the present invention, time schedule controller is distinguished corresponding penetrance in order to all digital gray level values of searching described image data in described second gamma lookup table, and the Controlling Source driver provides the pixel of corresponding second gray scale voltage to the display panel according to this.
According to another embodiment of the present invention, time schedule controller is distinguished corresponding penetrance in order to all digital gray level values of searching described image data in described the 3rd gamma lookup table, and the Controlling Source driver provides the pixel of corresponding the 3rd gray scale voltage to the display panel according to this.
According to another embodiment of the present invention, the demonstration time ratio of the described first dark space image frame, the described second dark space image frame and described clear zone image frame is 1: 1: 1.
According to another embodiment of the present invention, the picture update rate of LCD is described first frequency, and described first frequency is 120Hz.
The driving method of LCD proposed by the invention is to utilize identical frequency to transmit and process image data, allows the shown image frame of its applied LCD can not produce flicker.In addition, because the driving method of arbitrary LCD that the invention described above proposed need not made zoning design at the pixel of display panel, so can under the prerequisite of the screen resolution that does not reduce LCD, still can improve the LCD problem of colour cast with great visual angle effectively.
Description of drawings
Fig. 1 is the system architecture diagram of the LCD of one embodiment of the invention.
Fig. 2 concerns synoptic diagram for coupling between the partial pixel in the display panel of LCD shown in Figure 1.
Fig. 3 is the process flow diagram of the liquid crystal display driving method of one embodiment of the invention.
Fig. 4 is the liquid crystal display driving method process flow diagram of another embodiment of the present invention.
Drawing reference numeral:
100: LCD
101: time schedule controller
103: gate drivers
105: source electrode driver
107: display panel
101a: first gamma lookup table
101b: second gamma lookup table
P: pixel
G1～Gm: gate wirings
S1～Sm: source electrode distribution
S301～S305: each step of driving method process flow diagram of the LCD of one embodiment of the invention
S401～S407: each step of driving method process flow diagram of the LCD of another embodiment of the present invention
Embodiment
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment of the present invention cited below particularly, and cooperate appended graphicly, be described in detail below.
The present invention can effectively solve aforementioned prior art in order to improving the LCD shortcoming that method derived of colour cast problem with great visual angle, that is the screen resolution problems such as producing flicker with image frame that descend.
Fig. 1 is the system architecture diagram of the LCD of one embodiment of the invention.Fig. 2 concerns synoptic diagram for coupling between partial pixel in the display panel of LCD shown in Figure 1.Please merge with reference to Fig. 1 and Fig. 2, LCD 100 comprises time schedule controller (timing controller) 101, gate drivers (gatedriver) 103, source electrode driver (source driver) 105, and display panel 107.Wherein, gate drivers 103 has most bar gate wirings G1～Gm, and the basic sequential that these gate drivers 103 meetings are provided according to time schedule controller 101, and see through gate wirings G1～Gm output scanning signal (scan signal) in regular turn, use each the row pixel in the corresponding unlatching display panel 107.
In addition, time schedule controller 101 can be searched all digital gray level values of the image data that is received and distinguish corresponding penetrance in the second gamma lookup table 101b, and Controlling Source driver 105 provides corresponding second gray scale voltage to the display panel 107 interior pixel P that opened one by one by gate drivers 103 according to this.By this, drive all pixel P in the display panel 107 via source electrode driver 105 after, promptly produce the above-mentioned first dark space image frame.
Based on above-mentioned, because time schedule controller 101 is to utilize identical frequency (that is 120Hz) to transmit and process image data, so compared to the frequency upgrading of the process image data existing practice for the twice of the frequency that transmits image data, the LCD 100 shown image frames of present embodiment can't produce flicker.In addition, because present embodiment need not made zoning design at the pixel P of display panel 107, so compared to the existing practice that each pixel in the display panel is divided into two sub-pixels, the screen resolution of the LCD 100 of present embodiment just can be under the prerequisite that does not reduce, still can improve the problem of colour cast effectively, that is allow the gamma curve of LCD when watching with great visual angle be close to the gamma curve of positive visual angle when watching.
Moreover, according to the relation that couples between each pixel P of display panel 107 as can be known, display panel 107 is as long as adopt the type of drive (column inversion) of row counter-rotating can reach an effect that counter-rotating (dotinversion) type of drive can reach, that is promote the image quality that LCD 100 is presented, and compared to the available liquid crystal display that adopts the some inversion driving mode, the consumed power of LCD 100 integral body of present embodiment can be lower.
In another embodiment of the present invention, time schedule controller 101 is own except the built-in first gamma lookup table 101a and the second gamma lookup table 101b, can also built-in the 3rd gamma lookup table (not illustrating).For example, after time schedule controller 101 is the image data that is received according to described first frequency (that is 120Hz) and itself first built-in gamma lookup table 101a and second gamma lookup table 101b processing equally, and produce the above-mentioned clear zone image frame and the first dark space image frame respectively.In addition, after time schedule controller 101 more can be handled the image data that is received according to described first frequency and itself the 3rd built-in gamma lookup table, to produce the second dark space image frame.
In present embodiment, all digital gray level values of the image data that time schedule controller 101 receives in order to search are distinguished corresponding penetrance in the 3rd gamma lookup table, and Controlling Source driver 105 provides corresponding the 3rd gray scale voltage to the display panel 107 interior pixel P that opened one by one by gate drivers 103 according to this.By this, drive all pixel P in the display panel 107 via source electrode driver 105 after, promptly produce the above-mentioned second dark space image frame.
Based on above-mentioned, because time schedule controller 101 still utilizes identical frequency (that is 120Hz) to transmit and process image data, so compared to the frequency upgrading of the process image data existing practice for the twice of the frequency that transmits image data, the LCD 100 shown image frames of present embodiment equally still can not produce flicker.In addition, because present embodiment need not made zoning design at the pixel P of display panel 107 yet, so compared to the existing practice that each pixel in the display panel is divided into two sub-pixels, the screen resolution of the LCD 100 of present embodiment equally can be under the prerequisite that does not reduce, more effectively improve the problem of colour cast than a last embodiment, that is allow with great visual angle gamma curve more press close to positive visual angle gamma curve.Moreover the LCD 100 of present embodiment also has the effect that reduces power consumption.
Fig. 3 is the liquid crystal display driving method process flow diagram of one embodiment of the invention.Please refer to Fig. 3, the driving method of the LCD of present embodiment comprises the following steps: at first to transmit image data to LCD with first frequency (for example being 120Hz), and after handling described image data according to described first frequency and first gamma lookup table, and generation clear zone image frame (step S301).In step S301, the step that produces described clear zone image frame comprises: all digital gray level values of searching described image data are distinguished corresponding penetrance in described first gamma lookup table, and the pixel of corresponding first gray scale voltage to the display panel is provided according to this.Then, transmit described image data to LCD with described first frequency, and after handling described image data according to described first frequency and second gamma lookup table, and generation dark space image frame (step S303).In step S303, the step that produces described dark space image frame comprises: all digital gray level values of searching described image data are distinguished corresponding penetrance in described second gamma lookup table, and the pixel of corresponding second gray scale voltage to the display panel is provided according to this.At last, superpose in regular turn described clear zone image frame and described dark space image frame are with show image picture (step S305) on the display panel of LCD.In present embodiment, the penetrance that same numbers GTG value is found out at first gamma lookup table is greater than the penetrance that is found out at second gamma lookup table, and the demonstration time of dark space image frame is longer than the demonstration time of clear zone image frame.For instance, the demonstration time ratio of dark space image frame and clear zone image frame can be 2: 1, but the present invention is not as limit.
Fig. 4 is the liquid crystal display driving method process flow diagram of another embodiment of the present invention.Please refer to Fig. 4, the driving method of the LCD of present embodiment comprises the following steps: at first to transmit image data to LCD with first frequency (for example being 120Hz), and after handling described image data according to described first frequency and first gamma lookup table, and generation clear zone image frame (step S401).In step S401, the step that produces described clear zone image frame comprises: all digital gray level values of searching described image data are distinguished corresponding penetrance in described first gamma lookup table, and the pixel of corresponding first gray scale voltage to the display panel is provided according to this.Then, transmit described image data to LCD with described first frequency, and after handling described image data according to described first frequency and second gamma lookup table, and produce the first dark space image frame (step S403).In step S403, the step that produces the described first dark space image frame comprises: all digital gray level values of searching described image data are distinguished corresponding penetrance in described second gamma lookup table, and the pixel of corresponding second gray scale voltage to the display panel is provided according to this.Then, transmit described image data to LCD with described first frequency, and after handling described image data according to described first frequency and the 3rd gamma lookup table, and produce the second dark space image frame (step S405).In step S405, the step that produces the described second dark space image frame comprises: all digital gray level values of searching described image data are distinguished corresponding penetrance in described the 3rd gamma lookup table, and the pixel of corresponding the 3rd gray scale voltage to the display panel is provided according to this.At last, the described clear zone image frame that superposes in regular turn, the described first dark space image frame and the described second dark space image frame are with show image picture (step S407) on the display panel of LCD.In present embodiment, the penetrance that same numbers GTG value is found out at described first gamma lookup table is greater than the penetrance that is found out at described second gamma lookup table, and the penetrance that is found out at described second gamma lookup table is greater than the penetrance that is found out at described the 3rd gamma lookup table, and the demonstration time of the described first dark space image frame adds up the demonstration time that demonstration time of the described second dark space image frame is longer than described clear zone image frame, for instance: the first dark space image frame, the demonstration time ratio of the second dark space image frame and clear zone image frame can be 1: 1: 1, but the present invention is not as limit.
Above-mentioned disclosed first frequency is done for example with 120Hz mostly, but what have the technical field of the invention knows that usually the knowledgeable is when understanding, the present invention is not restricted to this, and the deviser can make change adaptively with described first frequency according to the actual design demand actually.Moreover, in above-mentioned numerous embodiment, be at most to do for example, but the present invention is not as limit with three gamma lookup tables.
In sum, the driving method of LCD proposed by the invention utilizes identical frequency to transmit and process image data, allows the shown image frame of its applied LCD can not produce flicker.In addition, because the driving method of arbitrary LCD that the invention described above proposed need not made zoning design at the pixel of display panel, so can under the prerequisite of the screen resolution that does not reduce LCD, still can improve the LCD problem of colour cast with great visual angle effectively.
Though the present invention discloses as above with embodiment; right its is not in order to limit the present invention; any have a technical field of the invention know the knowledgeable usually; without departing from the spirit and scope of the present invention; when can doing various changes and retouching, so protection scope of the present invention is as the criterion when looking the claim scope person of defining.
Claims (24)
1. the driving method of a LCD, described method comprises the following steps:
Transmit an image data to described LCD with a first frequency, and handle described image data to produce a clear zone image frame according to described first frequency and one first gamma lookup table;
Transmit described image data to described LCD with described first frequency, and handle described image data to produce a dark space image frame according to described first frequency and one second gamma lookup table; And
Superpose in regular turn described clear zone image frame and described dark space image frame, on a display panel of described LCD, showing an image frame,
Wherein, the penetrance that same numbers GTG value is found out at described first gamma lookup table is greater than the penetrance that is found out at described second gamma lookup table, and the demonstration time of described dark space image frame is longer than the demonstration time of described clear zone image frame.
2. the driving method of LCD as claimed in claim 1, the step that wherein produces described clear zone image frame comprises:
Search all digital gray level values of described image data and in described first gamma lookup table, distinguish corresponding penetrance, and provide corresponding one first gray scale voltage according to this to the interior pixel of described display panel.
3. the driving method of LCD as claimed in claim 1, the step that wherein produces described dark space image frame comprises:
Search all digital gray level values of described image data and in described second gamma lookup table, distinguish corresponding penetrance, and provide corresponding one second gray scale voltage according to this to the interior pixel of described display panel.
4. the driving method of LCD as claimed in claim 1, the demonstration time ratio of wherein said dark space image frame and described clear zone image frame is 2: 1.
5. the driving method of LCD as claimed in claim 1, the picture update rate of wherein said LCD is described first frequency.
6. the driving method of LCD as claimed in claim 5, wherein said first frequency is 120Hz.
7. the driving method of a LCD, described method comprises the following steps:
Transmit an image data to described LCD with a first frequency, and handle described image data according to described first frequency and one first gamma lookup table and produce a clear zone image frame;
Transmit described image data to described LCD with described first frequency, and handle described image data to produce one first dark space image frame according to described first frequency and one second gamma lookup table;
Transmit described image data to described LCD with described first frequency, and handle described image data to produce one second dark space image frame according to described first frequency and one the 3rd gamma lookup table; And
Superpose in regular turn described clear zone image frame, the described first dark space image frame and the described second dark space image frame, on a display panel of described LCD, showing an image frame,
Wherein, the penetrance that same numbers GTG value is found out at described first gamma lookup table is greater than the penetrance that is found out at described second gamma lookup table, and the penetrance that is found out at described second gamma lookup table is greater than the penetrance that is found out at described the 3rd gamma lookup table, and the demonstration time of the described first dark space image frame adds up the demonstration time that demonstration time of the described second dark space image frame is longer than described clear zone image frame.
8. the driving method of LCD as claimed in claim 7, the step that wherein produces described clear zone image frame comprises:
Search all digital gray level values of described image data and in described first gamma lookup table, distinguish corresponding penetrance, and provide corresponding one first gray scale voltage according to this to the interior pixel of described display panel.
9. the driving method of LCD as claimed in claim 7, the step that wherein produces the described first dark space image frame comprises:
Search all digital gray level values of described image data and in described second gamma lookup table, distinguish corresponding penetrance, and provide corresponding one second gray scale voltage according to this to the interior pixel of described display panel.
10. the driving method of LCD as claimed in claim 7, the step that wherein produces the described second dark space image frame comprises:
Search all digital gray level values of described image data and in described the 3rd gamma lookup table, distinguish corresponding penetrance, and provide corresponding one the 3rd gray scale voltage according to this to the interior pixel of described display panel.
11. the driving method of LCD as claimed in claim 7, the demonstration time ratio of the wherein said first dark space image frame, the described second dark space image frame and described clear zone image frame is 1: 1: 1.
12. the driving method of LCD as claimed in claim 7, the picture update rate of wherein said LCD are described first frequency.
13. the driving method of LCD as claimed in claim 12, wherein said first frequency are 120Hz.
14. a LCD is characterized in that, described LCD comprises:
Time schedule controller, in order to receive an image data that transmits with a first frequency, and after handling described image data according to described first frequency and itself built-in at least one first gamma lookup table and one second gamma lookup table, and produce a clear zone image frame and one first dark space image frame respectively; And
One display panel electrically connects described time schedule controller, in order to described clear zone image frame and the described first dark space image frame of superposeing in regular turn, and shows an image frame,
Wherein, the penetrance that same numbers GTG value is found out at described first gamma lookup table is greater than the penetrance that is found out at described second gamma lookup table, and the demonstration time of the described first dark space image frame is longer than the demonstration time of described clear zone image frame.
15. LCD as claimed in claim 14, it is characterized in that, described time schedule controller is distinguished corresponding penetrance in order to all digital gray level values of searching described image data in described first gamma lookup table, and controls the one source pole driver according to this pixel of corresponding one first gray scale voltage to the described display panel is provided.
16. LCD as claimed in claim 14, it is characterized in that, described time schedule controller is distinguished corresponding penetrance in order to all digital gray level values of searching described image data in described second gamma lookup table, and controls the one source pole driver according to this pixel of corresponding one second gray scale voltage to the described display panel is provided.
17. LCD as claimed in claim 14 is characterized in that, the demonstration time ratio of described first dark space image frame and described clear zone image frame is 2: 1.
18. LCD as claimed in claim 14 is characterized in that, the picture update rate of described LCD is described first frequency.
19. LCD as claimed in claim 18 is characterized in that, described first frequency is 120Hz.
20. a LCD is characterized in that, described LCD comprises:
Time schedule controller, in order to receive an image data that transmits with a first frequency, and after handling described image data according to described first frequency and itself built-in at least one first gamma lookup table and one second gamma lookup table, and produce a clear zone image frame and one first dark space image frame respectively, after the described first frequency of foundation and itself one the 3rd built-in gamma lookup table are handled described image data, and produce one second dark space image frame; And
One display panel electrically connects described time schedule controller, in order to the described clear zone image frame that superposes in regular turn, the described first dark space image frame and the described second dark space image frame, and shows described image frame,
Wherein, the penetrance that same numbers GTG value is found out at described first gamma lookup table is greater than the penetrance that is found out at described second gamma lookup table, and the penetrance that is found out at described second gamma lookup table is greater than the penetrance that is found out at described the 3rd gamma lookup table, and the demonstration time of the described first dark space image frame adds up the demonstration time that demonstration time of the described second dark space image frame is longer than described clear zone image frame.
21. LCD as claimed in claim 20, it is characterized in that, described time schedule controller is distinguished corresponding penetrance in order to all digital gray level values of searching described image data in described first gamma lookup table, and controls the one source pole driver according to this pixel of corresponding one first gray scale voltage to the described display panel is provided.
22. LCD as claimed in claim 20, it is characterized in that, described time schedule controller is distinguished corresponding penetrance in order to all digital gray level values of searching described image data in described second gamma lookup table, and controls the one source pole driver according to this pixel of corresponding one second gray scale voltage to the described display panel is provided.
23. LCD as claimed in claim 20, it is characterized in that, described time schedule controller is distinguished corresponding penetrance in order to all digital gray level values of searching described image data in described the 3rd gamma lookup table, and controls the one source pole driver according to this pixel of corresponding one the 3rd gray scale voltage to the described display panel is provided.
24. LCD as claimed in claim 20 is characterized in that, the demonstration time ratio of the described first dark space image frame, the described second dark space image frame and described clear zone image frame is 1: 1: 1.
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| CN102314834B (en) * | 2010-06-30 | 2014-07-02 | 达意科技股份有限公司 | Electrophoresis display device and drive method thereof |
| CN102347005A (en) * | 2010-07-30 | 2012-02-08 | 奇美电子股份有限公司 | Image adjusting method and device |
| CN102568429B (en) * | 2012-03-01 | 2013-09-04 | 深圳市华星光电技术有限公司 | Method and device for simulating squint angle image |
| CN104317084B (en) * | 2014-11-07 | 2017-05-17 | 深圳市华星光电技术有限公司 | Liquid crystal panel and driving method thereof |
| CN105070252B (en) * | 2015-08-13 | 2018-05-08 | 小米科技有限责任公司 | Reduce the method and device of display brightness |
| CN107564486A (en) * | 2017-09-19 | 2018-01-09 | 惠科股份有限公司 | The driving method and display device of display device |
| CN109285513B (en) * | 2018-10-30 | 2020-05-22 | 惠科股份有限公司 | Driving method and driving device of display panel |
| TWI694437B (en) * | 2019-03-26 | 2020-05-21 | 友達光電股份有限公司 | Adjustment method of display apparatus with dual cells |
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