CN101727802B - Display and driving device and method thereof - Google Patents

Abstract

The present invention discloses a display and a driving device and method thereof. The driving method of the display provided by the present invention comprises the following steps: first, during at least one sub-frame period in a frame period of the display, a black screen insertion technique is performed during the process of writing data of a scan line. Then, after completing the writing of data of a part of the scan lines during the sub-frame period and waiting for a reaction time, the sub-light source of the backlight module is turned on.

Description

Display and driving device and method thereof

technical field

The invention relates to a plane display technology, and in particular to a color sequential liquid crystal display with no color shift and high display brightness, its driving device and method.

Background technique

Generally speaking, the color filter type liquid crystal display (CF-type LCD) is often limited by the characteristics of its own structure, which makes its color gamut low. In addition, the liquid crystal display of the color filter type will also be affected by the time-varying effect (time dependent effect) of the liquid crystal capacitance (LC capacitance), which will cause the image picture presented by it to produce a dynamic afterimage (motion blur).

Therefore, in order to effectively solve the many defects derived from the traditional color filter type liquid crystal display, a color sequential type liquid crystal display (color sequential type LCD) has evolved. However, although the color sequential liquid crystal display can effectively solve the problem of dynamic afterimage and greatly improve the color gamut, the color sequential liquid crystal display will still be affected by the time-varying effect of the liquid crystal capacitance in essence, which makes the different gray The brightness converted to the same gray scale will be inconsistent. Therefore, the image frame presented by the color sequential liquid crystal display will produce color shift (color shift).

In addition, the driving method of the traditional color sequential liquid crystal display will finish writing the data of all scanning lines and wait for a period of response time (also known as the red, green or blue sub-picture period) during each sub-picture period. That is, after giving the liquid crystal molecules a reaction time to change state), the sub-light source (that is, the red, green or blue sub-light source) of the LED backlight module (LED backlight module) will be turned on, and this driving method will cause the LED backlight The light-on time of the module during each sub-picture period is insufficient, which will also cause the overall display brightness of the color sequential liquid crystal display to be dark.

Contents of the invention

In view of this, the object of the present invention is to provide a display driving device and method, which can not only effectively solve the problem of color shift in the color sequential liquid crystal display, but also improve the overall display brightness of the color sequential liquid crystal display.

Another object of the present invention is to provide a color sequential liquid crystal display with no color shift and high display brightness.

Based on the above and the purpose to be realized, the present invention provides a driving method of a display, which includes the following steps: first, during at least one sub-picture period in a picture period of the display, the data writing process of the scanning line is performed In the implementation of black screen technology. Next, after the data writing of part of the scanning lines is completed during the sub-picture period and after waiting for a period of response time, the sub-light source of the backlight module is turned on.

According to an embodiment of the present invention, during the sub-picture period, the process of writing data of the scanning lines also includes performing an overdrive technique to cooperate with the black picture insertion technique.

According to an embodiment of the present invention, the black picture insertion technique is to simultaneously write black data to the partial scan lines, or to sequentially write black data to the partial scan lines.

According to an embodiment of the present invention, the display driving method proposed by the present invention is suitable for driving a color sequential liquid crystal display.

According to an embodiment of the present invention, the sub-picture period includes a red sub-picture period, a green sub-picture period or a blue sub-picture period, or a combination of the three.

According to an embodiment of the present invention, the backlight module is an LED backlight module, and the sub-light sources include red sub-light sources, green sub-light sources or blue sub-light sources.

In another aspect, the present invention provides a display driving device, which includes a timing controller, a gate driver, a source driver, and a backlight module driving unit. Wherein, the gate driver is coupled to the display panel and controlled by the timing controller to turn on the scan lines in the display panel sequentially. The source driver is coupled to the display panel and is controlled by the timing controller for writing corresponding data to the scan lines turned on by the gate driver in cooperation with the gate driver. The backlight module driving unit is coupled to the backlight module and controlled by the timing controller for driving the backlight module.

The timing controller cooperates with the gate driver, the source driver and the backlight module driving unit to execute the black frame insertion technique during at least one sub-frame period in a frame period of the display during the data writing process of the scanning lines, and During the sub-picture period, the sub-light sources of the backlight module are turned on after the data writing of part of the scanning lines is completed and a response time is waited for.

According to an embodiment of the present invention, the timing controller also cooperates with the gate driver, the source driver and the backlight module driving unit to perform an overdrive technique during the process of writing data to the scan line during the sub-screen period to cooperate with the Insert black screen technology.

According to an embodiment of the present invention, the black picture insertion technique is to simultaneously write black data to the partial scan lines, or to sequentially write black data to the partial scan lines.

According to an embodiment of the present invention, the display driving device proposed by the present invention is suitable for driving a color sequential liquid crystal display.

According to an embodiment of the present invention, the sub-picture period includes a red sub-picture period, a green sub-picture period or a blue sub-picture period, or a combination of the three.

According to an embodiment of the present invention, the backlight module is an LED backlight module, and the sub-light sources include red sub-light sources, green sub-light sources or blue sub-light sources.

According to an embodiment of the present invention, the display panel is a liquid crystal display panel.

In another aspect, the present invention provides a display, which includes a display panel, a backlight module, and the above-mentioned display driving device provided by the present invention.

The display driving device and method proposed by the present invention are suitable for driving a color sequential liquid crystal display, which is mainly during at least one sub-picture period in a frame period of a color sequential liquid crystal display during the process of writing data of scanning lines Perform black screen insertion technology and/or overdrive technology, and then turn on the sub-light source of the backlight module after completing the data writing of part of the scanning lines during the sub-screen period and waiting for a period of response time. Therefore, not only the problem of color shift produced by the color sequential liquid crystal display can be effectively solved, but also the overall display brightness of the color sequential liquid crystal display can be improved.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, several embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Description of drawings

FIG. 1 shows a system block diagram of a display 100 according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a black picture insertion technology according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a black screen insertion technique according to another embodiment of the present invention;

FIG. 4 is a schematic diagram of a traditional color sequential liquid crystal display being affected by the time-varying effect of liquid crystal capacitance;

FIG. 5 is a schematic diagram showing that the color sequential liquid crystal display 100 of the present invention is affected by the time-varying effect of the liquid crystal capacitance in essence;

FIG. 6 is a flow chart of a display driving method according to an embodiment of the present invention.

[Description of main component symbols]

100: color sequential liquid crystal display

101: Liquid crystal display panel

103: LED backlight module

105: Drive device

107: Timing controller

109: Gate driver

111: Source driver

113: Backlight module drive unit

Tf: One frame period of a color sequential liquid crystal display

Tr, Tg, Tb: red, green, blue sub-picture period of the color sequential liquid crystal display

G1～G320: Scanning lines of LCD panel

R, G, B: the lighting time of the red (R), green (G) and blue (B) sub-light sources of the LED backlight module

BFI: write black data

A, B: Circle the area

S601～S603: each step of the flow chart of the display driving method of the present invention

Detailed ways

The purpose of the present invention is to solve the problem of color shift in the color sequential liquid crystal display and to improve the overall display brightness of the color sequential liquid crystal display. The following content will describe the technical features and effects of this application in detail for reference by those skilled in the field of the present invention.

FIG. 1 is a system block diagram of a display 100 according to an embodiment of the present invention. Referring to Fig. 1, the display 100 of the present embodiment is illustrated by taking a color sequential liquid crystal display as an example, and it includes a liquid crystal display panel (LCD panel) 101, a light emitting diode backlight module 103, and a timing controller (timing controller, T - con) 107, a gate driver (gate driver) 109, a source driver (source driver) 111 and a backlight module driving unit 113 constitute the driving device 105 of the present invention.

In this embodiment, the liquid crystal display panel 101 has a plurality of pixels (pixels, not shown) arranged in a matrix for displaying images for users to watch. The LED backlight module 103 is used to sequentially provide three sub-light sources of red (R), green (G), and blue (B) for the liquid crystal display panel 101 to use. However, since the structures and functions of the liquid crystal display panel 101 and the LED backlight module 103 are well known to those having ordinary knowledge in the field of the present invention, so in order not to confuse the spirit of the present invention, details are not repeated here.

Generally speaking, the color sequential liquid crystal display 100 has three sub-picture periods (that is, red, green, and blue sub-picture periods) in one frame period, and if 60 frames per second are used to display dynamic images as an example, The frame rate of the color sequential LCD 100 is as high as 180 Hz (that is, each sub-frame period is 5.56 ms). Because of this, the liquid crystal molecules of the pixels in the liquid crystal display panel 101 usually use fast liquid crystal molecules (such as OCB liquid crystal molecules, but not limited thereto) to match the driving method of the color sequential liquid crystal display 100 .

It can be seen from the above that the driving device 105 is mainly composed of the timing controller 107 , the gate driver 109 , the source driver 111 and the backlight module driving unit 113 . Wherein, the gate driver 109 is coupled to the liquid crystal display panel 101 and controlled by the timing controller 107 , which is mainly used to sequentially turn on the scan lines (not shown) in the liquid crystal display panel 101 . The source driver 111 is coupled to the liquid crystal display panel 101 and is controlled by the timing controller 107. It is mainly used to cooperate with the gate driver 109 to write corresponding data (such as pixel data) into the scanning enabled by the gate driver 109. Wire.

The backlight module driving unit 113 is coupled to the LED backlight module 103 and controlled by the timing controller 107 for driving the LED backlight module 103 . The timing controller 107 cooperates with the gate driver 109, the source driver 111 and the backlight module driving unit 113, so that at least one sub-picture period in a picture period of the color sequential liquid crystal display 100 (in this embodiment, the green sub-picture will be used first) period as an example for illustration, but the spirit of the present invention is not limited thereto) during the process of writing scan line data, perform black screen insertion technology, and complete part of the scan line data writing during the green sub-picture period The green (G) sub-light source of the LED backlight module 103 is turned on after waiting for a period of response time.

For example, FIG. 2 is a schematic diagram of a black frame insertion technique according to an embodiment of the present invention. Referring to Fig. 1 and Fig. 2, it can be easily seen from Fig. 2 that the present embodiment is an example of a liquid crystal display panel 101 with a video graphics array (VGA) resolution of 320*240, but it is not limited thereto, and Fig. 2 The mark Tf in represents the period of a picture of the color sequence type liquid crystal display 100 (that is 16.67ms); mark Tr, Tg, Tb represent the red, green, blue sub-picture period of the color sequence type liquid crystal display 100 respectively (all are 5.56ms ); marks G1-G320 indicate the scanning lines of the liquid crystal display panel 101; marks R, G, and B respectively indicate the lighting time of the red (R), green (G) and blue (B) sub-light sources of the light-emitting diode backlight module 103; and The mark BFI means writing black data.

In this embodiment, the timing controller 107 cooperates with the gate driver 109, the source driver 111 and the backlight module driving unit 113, and only scans during the green sub-frame period Tg in the frame period Tf of the color sequential liquid crystal display 100 During the data writing process of lines G1 ~ G320, the black screen technology is implemented, and the data writing of part of the scanning lines (for example, 160 scanning lines) is completed during the green sub-screen period Tg and the light is turned on after waiting for a period of reaction time Green (G) sub-light source of the diode backlight module 103 .

To be more clear, the timing controller 107 cooperates with the gate driver 109, the source driver 111 and the backlight module driving unit 113 to perform the scan line G1 during the green sub-frame period Tg in the frame period Tf of the color sequential liquid crystal display 100. Before the data of G160 is written, black data is simultaneously written into the scan lines G1-G160 to compensate the degree to which the color sequential liquid crystal display 100 is affected by the intrinsic time-varying effect of liquid crystal capacitance. Immediately afterwards, after writing the data of the scan lines G1-G160 during the green sub-frame period Tg and waiting for a period of response time, the timing controller 107 controls the LED backlight module 103 to turn on the green (G) sub-frame of the LED backlight module 103. light source.

Afterwards, the timing controller 107 will cooperate with the gate driver 109, the source driver 111 and the backlight module driving unit 113, so that the scanning line G161～ Before the data of G320 is written, black data is simultaneously written to the scan lines G161 - G320 to compensate the extent to which the color sequential liquid crystal display 100 is affected by the intrinsic time-varying effect of liquid crystal capacitance. Finally, after writing data into the scan lines G161-G320 during the green sub-screen period Tg and waiting for a period of response time, the timing controller 107 controls the LED backlight module 103 again to turn on the green (G) sub-frame of the LED backlight module 103. light source.

In this way, since the driving device 105 of this embodiment writes black data at the same time before writing data into the scanning lines G1-G160 and G161-G320 respectively, the color sequential liquid crystal display 100 is compensated by the nature of the liquid crystal capacitance. Therefore, the color sequential liquid crystal display 100 of this embodiment is less likely to be affected by the time-varying effect of liquid crystal capacitors to cause color shift.

It is worth mentioning here that, in another embodiment of the present invention, the driving device 105 can also sequentially write black data on the scanning lines G1-G160 and G161-G320 respectively before data writing, which is different from The method of inserting the black picture technology in the previous embodiment (that is, writing black data at the same time) can also compensate the degree to which the color sequential liquid crystal display 100 is affected by the time-varying effect of the liquid crystal capacitance in essence, and can also cause the color sequential The type liquid crystal display 100 is less susceptible to color shift due to the time-varying effect of liquid crystal capacitance.

However, the driving device 105 of this embodiment occupies too much addressing time allocated to the scan lines G1 - G320 for data writing in the green sub-frame period Tg in order not to be affected by the black frame insertion technique. Therefore, the timing controller 107 of this embodiment also cooperates with the gate driver 109, the source driver 111 and the backlight module driving unit 113, and the green sub-frame period Tg in the frame period Tf of the color sequential liquid crystal display 100 is in progress. In the process of writing the data of the scan lines G1-G320, an over driving technology (OD technology) is implemented to cooperate with the black picture insertion technology.

In this way, the user can adjust the amplitude of the black data written to the scanning lines G1-G320 according to the actual design requirements, so as to reduce the green sub-frame period Tg occupied by the driving device 105 when performing the black frame insertion technique. The time allocated to the scanning lines G1-G320 for data writing. In addition, since the red (R), green (G) and blue (B) sub-light sources of the LED backlight module 103 are respectively lit twice during the red, green, and blue sub-picture periods Tr, Tg, and Tb, their respective The lighting time R, G, and B will be longer, so that the brightness displayed by the color sequential liquid crystal display 100 as a whole will also be greatly improved.

In addition, the driving device 105 of this embodiment is performing at least one sub-picture period (that is, red, green or blue sub-picture period Tr, Tg or Tb) in a picture period Tf of the color sequential liquid crystal display 100. In the process of writing the data of scanning lines G1-G320, the mechanism of inserting black screen technology can also make the critical voltage (critical voltage, Vcr) of the fast liquid crystal molecules (that is, OCB liquid crystal molecules) of the pixels in the liquid crystal display panel 101 become smaller, so that the OCB liquid crystal molecules in the bend state (Bend state) are not easy to return to the splay state (Splay state), and continue to maintain a displayable state.

However, the spirit of the present invention is not limited to the embodiments described above. FIG. 3 is a schematic diagram of a black picture insertion technology according to another embodiment of the present invention. Referring to FIGS. 1 to 3 , it can be easily seen from FIG. 3 that the driving device 205 of this embodiment performs scan lines G1 to G320 in addition to the green sub-picture period Tg in the picture period Tf of the color sequential liquid crystal display 100 . In addition to performing the black picture insertion technique during the data writing process, it also performs the black picture insertion technique during the red sub-picture period Tr in the picture period Tf of the color sequential liquid crystal display 100 during the data writing process of the scanning lines G1-G320. black screen technology. In this way, the many advantages mentioned in the above-mentioned embodiments can be more remarkable.

It is worth mentioning here that the driving device 205 of the present invention is not limited to the process of writing data to the scanning lines G1-G320 during the green sub-picture period Tg in the picture period Tf of the color sequential liquid crystal display 100 The black picture insertion technique is performed, or the black picture insertion technique is performed during the data writing process of the scanning lines G1-G320 limited to the red and green sub-picture periods Tr and Tg in the picture period Tf of the color sequential liquid crystal display 100 .

In other words, in other embodiments of the present invention, the driving device 205 of the present invention can scan the line G1 according to any combination of the red, green, and blue sub-picture periods Tr, Tg, and Tb in the picture period Tf. During the data writing process of ~G320, the technique of inserting black screens is performed, and the implementation manners of these changes all belong to the protection scope of the present invention.

So far, in order to let those skilled in the field of the present invention understand the technical effect brought by the driving device 205 of the present invention. The measurement results of several experiments are listed below for the reference of those who have ordinary knowledge in the field of the present invention.

FIG. 4 is a schematic diagram of a traditional color sequential liquid crystal display being affected by the time-varying effect of liquid crystal capacitance, wherein the horizontal axis represents time (ms), and the vertical axis represents brightness (nits). FIG. 5 is a schematic diagram of the color sequential liquid crystal display 100 of the present invention being affected by the time-varying effect of liquid crystal capacitance in essence, wherein the horizontal axis represents time (ms), and the vertical axis represents brightness (nits). Referring to Fig. 4 and Fig. 5, it can be easily seen from the circled area A in Fig. 4 that the luminances of different grayscales (that is, L0 and L63) converted to the same grayscale (that is, L127) will be inconsistent, so that the The image screen presented by the traditional color sequential liquid crystal display will produce color shift.

However, it can also be easily seen from the circled area B in Figure 5 that the different gray levels (ie L0, L31, L63, L95, L127, L159, L191, L223) are transformed into the same gray level (ie L255) The brightness will be consistent, so the color sequential liquid crystal display 100 of the present invention will not be affected by the time-varying effect of the liquid crystal capacitance, which will cause color shift in the displayed image.

It is believed that after the explanation of the above embodiments, those with ordinary knowledge in the field of the present invention should already know the technical features, functions and spirits of the present invention. Therefore, at least one display driving method will be given below for reference by those skilled in the art based on the contents disclosed in the above-mentioned embodiments.

FIG. 6 is a flow chart of a display driving method according to an embodiment of the present invention. Referring to FIG. 6 , the driving method of the display in this embodiment includes the following steps: First, as described in step S601, during at least one sub-picture period in a picture period of the display, the data writing process of the scan line is executed. black screen technology. It is worth mentioning that the driving method of the display in this embodiment is suitable for driving a color sequential liquid crystal display, and the sub-picture period includes a red sub-picture period, a green sub-picture period or a blue sub-picture period, or is a combination of the three.

Next, as described in step S603 , the sub-light source of the backlight module is turned on after the data writing of part of the scanning lines is completed during the sub-frame period and after waiting for a period of response time. In this embodiment, during the sub-picture period, the process of writing data on the scanning line also includes performing overdrive technology to cooperate with the black picture insertion technology, and the black picture insertion technology can be written simultaneously or sequentially. Into the black data to the part of the scan line. In addition, the backlight module is an LED backlight module, and the sub-light sources include red sub-light sources, green sub-light sources or blue sub-light sources.

Therefore, according to the driving method of the display proposed by the present invention, it can be known that as long as it is during any sub-picture period (that is, during the red, green or blue sub-picture period) of the color sequential liquid crystal display, before the data writing of the scanning line is performed, And performing any type of black screen insertion technology in the state where the corresponding sub-light source is not turned on falls within the protection scope of the present invention.

In summary, the display driving device and method proposed by the present invention are suitable for driving a color sequential liquid crystal display, which mainly performs scanning lines during at least one sub-picture period in a picture period of a color sequential liquid crystal display. During the process of writing data, perform black screen insertion technology and/or overdrive technology, and then turn on the sub-light source of the backlight module after completing the data writing of part of the scanning lines during the sub-picture period and waiting for a period of response time. In this way, not only can effectively solve the color shift problem of the color sequential liquid crystal display, but also can improve the brightness of the overall display of the color sequential liquid crystal display, and make it difficult for the OCB liquid crystal molecules in the unfolded state to return to There are several advantages to the bent state.

Although the present invention has been disclosed above with multiple embodiments, it is not limited to the present invention. Any person skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection of the invention shall be determined by the scope of the appended claims.

Claims (30)

1. A method for driving a display, comprising the following steps: During at least one sub-picture period in a picture period of the display, the black picture insertion technique is performed during the data writing process of the scanning line; and After the data writing of part of the scanning lines is completed during the sub-picture period and after waiting for a period of response time, the sub-light source of the backlight module is turned on. 2 . The driving method of a display according to claim 1 , wherein, during the sub-picture period, the data writing process of the scanning line further includes performing an overdrive technique to cooperate with the black picture insertion technique. 3 . 3 . The driving method of a display according to claim 2 , wherein the technique of inserting black frames is writing black data to the part of the scanning lines at the same time. 4 . 4 . The driving method of a display according to claim 2 , wherein the technique of inserting black frames is sequentially writing black data into the partial scan lines. 5. The driving method of a display according to claim 1, wherein the driving method is suitable for driving a color sequential liquid crystal display. 6. The driving method of a display according to claim 5, wherein the sub-picture period comprises a red sub-picture period, a green sub-picture period or a blue sub-picture period. 7. The driving method of a display according to claim 5, wherein the sub-picture period comprises a combination of a red sub-picture period, a green sub-picture period and a blue sub-picture period. 8. The driving method of a display according to claim 5, wherein the backlight module is a light emitting diode backlight module. 9. The driving method of a display according to claim 8, wherein the sub-light source comprises a red sub-light source, a green sub-light source or a blue sub-light source. 10. A drive device for a display, comprising: timing controller; a gate driver, coupled to the display panel and controlled by the timing controller, for sequentially turning on the scan lines in the display panel; a source driver, coupled to the display panel and controlled by the timing controller, for cooperating with the gate driver to write corresponding data to the scanning lines turned on by the gate driver; and a backlight module driving unit, coupled to the backlight module and controlled by the timing controller, for driving the backlight module; Wherein, the timing controller cooperates with the gate driver, the source driver and the backlight module driving unit to write the data of the scanning line during at least one sub-frame period in one frame period of the display. In the process of inserting a black screen, and after writing the data of part of the scanning lines during the sub-screen and waiting for a period of response time, turn on the sub-light source of the backlight module. 11. The driving device of a display according to claim 10, wherein the timing controller further cooperates with the gate driver, the source driver and the backlight module driving unit, so that during the sub-picture In the process of writing the data of the scan line, the overdrive technology is implemented to cooperate with the black picture insertion technology. 12 . The display driving device according to claim 11 , wherein the black frame insertion technique is to write black data to the part of the scanning lines at the same time. 13 . 13. The driving device of a display according to claim 11, wherein the black frame insertion technique is to sequentially write black data into the partial scan lines. 14. The driving device of a display according to claim 10, wherein the driving device is suitable for driving a color sequential liquid crystal display. 15. The driving device of a display according to claim 14, wherein the sub-picture period includes a red sub-picture period, a green sub-picture period or a blue sub-picture period. 16. The driving device for a display according to claim 14, wherein. The sub-picture period includes a combination of the red sub-picture period, the green sub-picture period and the blue sub-picture period. 17. The driving device of a display according to claim 14, wherein the backlight module is a light emitting diode backlight module. 18. The driving device of a display according to claim 17, wherein the sub-light source comprises a red sub-light source, a green sub-light source or a blue sub-light source. 19. The driving device of a display according to claim 14, wherein the display panel is a liquid crystal display panel. 20. A display comprising: display panel; backlight module; and a driving device, coupled to the display panel and the backlight module, and used to perform black frame insertion technology during at least one sub-frame period in a frame period of the display during the process of writing data of scanning lines, And during the sub-picture period, the sub-light sources of the backlight module are turned on after the data writing of part of the scanning lines is completed and after waiting for a period of response time. 21. The display according to claim 20, wherein said driving means comprises: timing controller; a gate driver, coupled to the display panel and controlled by the timing controller, for sequentially turning on the scanning lines in the liquid crystal display panel; a source driver, coupled to the display panel and controlled by the timing controller, for cooperating with the gate driver to write corresponding data to the scanning lines turned on by the gate driver; and a backlight module driving unit, coupled to the backlight module and controlled by the timing controller, for driving the backlight module; Wherein, the timing controller cooperates with the gate driver, the source driver and the backlight module driving unit to implement the black frame insertion technique. 22. The display according to claim 21, wherein the timing controller further cooperates with the gate driver, the source driver, and the backlight module driving unit to perform scanning lines during the sub-picture period. In the process of data writing, the overdrive technology is implemented to cooperate with the black picture insertion technology. 23. The display according to claim 22, wherein the black frame insertion technique is to simultaneously write black data to the part of the scanning lines. 24. The display according to claim 22, wherein the technique of inserting black frames is sequentially writing black data into the partial scan lines. 25. The display of claim 20, wherein the display comprises at least one color sequential liquid crystal display. 26. The display of claim 25, wherein the sub-picture period comprises a red sub-picture period, a green sub-picture period or a blue sub-picture period. 27. The display according to claim 25, wherein the sub-picture period comprises a combination of a red sub-picture period, a green sub-picture period and a blue sub-picture period. 28. The display of claim 25, wherein the backlight module is a light emitting diode backlight module. 29. The display according to claim 28, wherein the sub light source comprises a red sub light source, a green sub light source or a blue sub light source. 30. The display of claim 25, wherein the display panel is a liquid crystal display panel.

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