TWI394128B - Multi-domain dynamic-driving backlight module and the method thereof - Google Patents

Description

Multi-region dynamic backlight driving device and method thereof

The present invention relates to a backlight driving device and method thereof, and more particularly to a multi-region dynamic backlight driving device and method thereof.

Since the liquid crystal display panel used for imaging in a liquid crystal display device itself cannot generate light, the light source must be provided through the backlight module to present the image on the display panel, and in the conventional technology, the display can be performed. The panel is divided into a plurality of display areas, and each display area has a corresponding backlight, and the use thereof is achieved by, for example, using a partition to turn off the backlight to achieve the effect of inserting a black screen to reduce the residual of the liquid crystal display panel when displaying the dynamic image. Shadow problem, or adjust the backlight brightness of each partition with each display partition screen to save power. However, for adjacent backlights, there are different light fields depending on the distance between the backlights and their brightness, so that adjacent display partitions with different brightness requirements generate mutual images when actually displaying images. interference.

The structure of the conventional display device is, for example, shown in the first figure. In the architecture using backlight partitioning, there are three backlights and a display panel, and the three backlights are respectively the first. The backlight 121, the second backlight 122, and the third backlight 123, wherein any one of the backlights 121, 122, or 123 is not limited to a single point source or a single line source, or may be multiple of the same backlight module partition. A general name of a point light source or a line light source, and the display panel is divided into a first display area 101, a second display area 102, and a first backlight 121, a second backlight 122, and a third backlight 123. The third display area 103, in other words, the light source required by the first display area 101 is mainly provided by the first backlight 121, and the light source required by the second display area 102 is mainly provided by the second backlight 122, and the third display The light source required for the area 103 is provided by the main third backlight 123, and the corresponding display areas 101, 102 are utilized between the first backlight 121, the second backlight 122 and the third backlight 123, 103 needs The target brightness is adjusted to adjust the intensity of the generated light source. For example, if the target brightness of the second display area 122 is half of the target brightness of the first display area 101 and is the target brightness of the third display area 103. At one time, the brightness of the corresponding first backlight 121, the second backlight 122, and the third backlight 123 should be 2:1:4 after being quantized, so when the first backlight 121, the second When the backlight 122 and the third backlight 123 are simultaneously turned on, although the backlights 121, 122, and 123 corresponding to each of the display areas 101, 102, and 103 provide light sources of different brightness, the first backlight 121 and the first The effect of the light field effect between the backlight 122 and the third backlight 123 is that each display area 101, 102, 103 may be interfered by the backlight corresponding to its adjacent display area, so that the corresponding first The actual brightness that appears when the display area 101, the second display area 102, and the third display area 103 are displayed is not the original target brightness, thus making the overall picture coordination poor.

Therefore, in view of the problems existing in the mode dimming mode, another structural design has been developed in the prior art to improve the above-mentioned defects. Please refer to the second figure, which is a conventional light blocking structure. The structure of the multi-region backlight module is such that two light blocking units 141 and 142 are added between the three backlights 121, 122, and 123 in the backlight module to prevent the light generated by the backlight from being incident to the vicinity. The sub-display area is interfered with by each other, in other words, the purpose of reducing the mutual influence of the light fields between the different backlights 121, 122, 123 is achieved. However, in the multi-region backlight module structure in the second figure, the light blocking units 141, 142 interposed between the backlights 121, 122, 123 can reduce the influence of part of the light field, but actually because of the light system. It has the characteristics of scattering or diffraction and can not solve the problem of mutual influence of light field very effectively. In addition, in actual production, the light blocking unit needs to have an accurate alignment with the display panel to achieve a good light blocking effect, thus increasing The difficulty of production.

Based on the above-mentioned shortcomings, the present invention proposes a multi-region dynamic backlight driving device and a method thereof, and it is desirable to effectively reduce the problem of mutual influence of light fields between different backlights without using a light blocking unit.

The main object of the present invention is to provide a multi-region dynamic backlight driving device and method thereof, which utilize at least two optical switch units and at least two light sources, each of which corresponds to an optical switch unit, and When a picture is cut into a plurality of sub-pictures, in different sub-pictures, the optical switch unit, the light source, or both can be turned on or off simultaneously, so that any one of the light sources that are turned on can only The corresponding optical switch unit passes through without passing through the optical switch unit that is not corresponding thereto, thereby achieving the problem of reducing mutual interference between different light sources.

Another object of the present invention is to provide a multi-region dynamic backlight driving device and method thereof, which utilize at least two optical switching units and at least two light sources, and each light source has a plurality of sub-light sources, and each sub-light source The state of being turned on and off can also be changed with different sub-pictures to achieve the problem of reducing the mutual interference of light field effects between different light sources.

For the above purpose, the present invention firstly provides a multi-region dynamic backlight driving device, comprising: at least two optical switch units and at least two light sources, and each light source corresponds to an optical switch unit, when any light source When it is turned on, it can pass through the corresponding optical switch unit corresponding to the optical switch unit. In addition, each light source can be turned on and off in different sub-pictures to match the open state or the closed state of the optical switch unit. Furthermore, each light source has a plurality of sub-light sources, and similarly, each sub-light source can be independently activated, and can also be turned on and off in different sub-pictures to be turned on or off with the optical switch unit. The states are matched to each other, so that the degree of influence of the light field effect between different light sources can be further reduced.

In addition, the present invention also provides a multi-region dynamic backlight driving method, the steps of which include: dividing a picture into a plurality of sub-pictures; connecting, opening at least one light source under each sub-frame, and simultaneously starting and simultaneously The light source unit corresponding to the light source is such that the light source that has been turned on can pass through the corresponding optical switch unit, and simultaneously activate at least one optical switch unit not corresponding to the light source to avoid The light source that is turned on passes through the optical switch unit that is not corresponding thereto. In addition, it is also possible to control whether the light source is turned on or off under different sub-pictures, and at the same time cooperate with the on or off state of the light switch unit, so that the light field effect between different light sources can be more significantly reduced.

Therefore, the multi-region dynamic backlight driving device and the method thereof disclosed by the present invention can utilize the different states of the opening and closing between the light source and the optical switch unit, so that the light field interference effect between different light sources can be utilized. It is reduced to a lower degree, thus making the picture appearing in the display device have better color contrast.

The purpose, technical contents, features and effects achieved by the present invention will be more readily understood by the detailed description of the embodiments and the accompanying drawings.

In order to improve the color contrast of the display device and reduce the light field interference effect between the plurality of backlights, the present invention provides a multi-region dynamic backlight driving device and a method thereof. Hereinafter, several different related to the present invention are provided. The implementation is described and accompanied by a schema.

First, please refer to the third figure and the fourth figure at the same time, wherein the third figure is a schematic diagram of one of the multi-region dynamic backlight driving devices of the present invention, and the fourth figure is the multi-region dynamic of the present invention. A flowchart of a method of backlight driving. In the third figure, a display device having a multi-region dynamic backlight drive is provided. The backlight module of the display device includes a first light source 221, a second light source 222, and a third light source 223. It is limited to a single point light source or a single line light source, but may also be a general name of a plurality of point light sources and line light sources in the same section of the backlight module, and each of the light sources 221, 222, and 223 is mainly used for providing display according to the position distribution. Each sub-unit of the unit displays a backlight required for the partitions 201, 202, 203, that is, the first light source 221 is mainly used to provide a backlight required for the first sub-display partition 201, and the second light source 222 is mainly used to provide the The second sub-light source 223 is mainly used to provide a backlight required for the third sub-display partition 203, and the first sub-display partition 201 includes at least a first optical switch unit 241 and The two sub-display partitions 202 include at least one second optical switch unit 242 and the third sub-display partition 203 includes at least one third optical switch unit 243.

In this embodiment, the first light source 221 has a first sub-light source 2211, a second sub-light source 2212, and a third sub-light source 2213. The second source 222 has a fourth sub-light source 2221 and a fifth sub-light source 2222. The six sub-light source 2223 has a seventh sub-light source 2231, an eighth sub-light source 2232 and a ninth sub-light source 2233, wherein the sub-light sources 2211, 2221 and 2231 are red light sources, and the sub-light sources 2212, 2222 and 2232 are green. The light source, the sub-light sources 2213, 2223, and 2233 are blue light sources. The sub-light source may also be a combination of light sources of other colors, but in principle, the different color sub-light sources in the same backlight partition should provide the corresponding display partition-white light source effect.

In addition, the display panel in this embodiment is a liquid crystal display panel, and the first optical switch unit 241, the second optical switch unit 242, and the third optical switch unit 243 have a first sub-optical switch unit 2211' and a second sub- The optical switch unit 2212', the third sub-optical switch unit 2213', the fourth sub-optical switch unit 2221', the fifth sub-optical switch unit 2222', the sixth sub-optical switch unit 2223', and the seventh sub-optical switch unit 2231' The eighth sub optical switch unit 2232' and the ninth sub optical switch unit 2233', wherein the sub optical switch units 2211', 2221' and 2231' are red pixels, and the sub optical switch units 2212', 2222' and 2232' are The green pixel, the sub-switch unit is 2213', 2223' and 2233' are blue pixels. In a color liquid crystal display device, the transmittance of the color light to the pixel can be adjusted according to the specific color filter layer corresponding to the pixel and the control of the liquid crystal molecules in the pixel.

According to the method of the multi-region dynamic backlight driving shown in FIG. 4, the steps include: turning on the red sub-light source 2211 in the first light source 221, the green sub-light source 2222 in the second light source 222, and the first step in the step S1. a blue sub-light source 2233 in the three light sources 223; a non-red sub-light source 2212, 2213 in the first light source 221, a non-green sub-light source 2221, 2223 in the second light source 222, and a non-blue sub-light source 2231 in the third source 223 2232; turning off the non-red sub-optical switches 2212', 2213' in the first optical switch 241, the non-green sub-optical switches 2221', 2223' in the second optical switch 242, and the non-blue sub-optical switch 2231 in the third optical switch 243 ', 2232'; in step S2, the blue sub-light source 2213 in the first light source 221, the red sub-light source 2221 in the second light source 222, and the green sub-light source 2232 in the third light source 223 are turned on, and the first light source 221 is turned off. The middle non-blue sub-light source 2211, 2212, the second light source 222 non-red sub-light source 2222, 2223, the third source 223 non-green sub-light source 2231, 2233; close the first optical switch 241 non-blue sub-optical switch 2211 ', 2212', non-red sub-light in the second optical switch 242 2222', 2223', the non-green sub-light switches 2231', 2233' in the third optical switch 243; in step S3, the green sub-light 2122 in the first light source 221, the blue sub-in the second light source 222 The red sub-light source 2231 of the light source 2223 and the third light source 223; the non-green sub-light source 2211, 2213 of the first light source 221, the non-blue sub-light source 2221, 2222 of the second light source 222, and the non-red sub-photo of the third source 223 The light source 2322, 2233; the non-green sub-optical switches 2211', 2213' in the first optical switch 241, the non-blue sub-optical switches 2221', 2222' in the second optical switch 242, and the non-red sub-switches in the third optical switch 243 Optical switches 2232', 2233'.

Taking the first sub-display partition 201 as an example, in step S1, red light may be provided by the red sub-light source 2211 in the first light source 221 to display the red component in the picture, and the second sub-optical switch unit 2212' is turned off ( In this embodiment, the green sub-switch unit of the first sub-display partition can make the first sub-display partition 201 not interfere with the green sub-light source 2222 in the second light source 222, but at this time, the second light source is not green. The sub-light sources are also turned off, that is, the first sub-display partition 201 may not be interfered by the second light source 222. Similarly, in steps S2 and S3, the first sub-display partition 201 can respectively display the green and blue components in the picture, and is not interfered by the second light source 222 corresponding to the second sub-display partition 202. In addition, the opening time lengths of the red sub-light source 2211, the green sub-light source 2212, and the blue sub-light source 2213 in steps S1, S2, and S3 should be adjusted according to the brightness of each light source, so that the overall light source is in one frame time (Frame Time) is equivalent to a white light source. If the intensity of each sub-light source in step S1 is greater than the intensity of each sub-light source in step S2, and step S1 occurs at a first sub-picture time and step S2 occurs at a second sub-picture time, then the first picture sub-time should be Shorter than the second sub-picture time. That is, the intensity of the sub-light source in each step should be approximately inversely proportional to the length of time implemented in each step, so that each sub-light source is equivalent to a white light source.

Similarly, the second sub-display partition 202 can sequentially display the green, blue, and red components of the screen in steps S1 to S3, and is not interfered by the light sources 221 and 223, and the third sub-display partition 203 can sequentially display the screen. The blue, red, and green components are not interfered by the light source 222. In summary, as described above, it is possible to achieve the problem of ensuring interference between the light sources of the respective backlight partitions under the control of the backlight intensity of the partition.

As described above, the three primary colors (red, green, and blue) sub-light sources are respectively turned on at different times, but two color sub-light sources may be simultaneously turned on at a first time period and turned on at a second time period. Achieve the effect of an equivalent white light source. The following steps S1' to S2' of the apparatus of FIG. 3 and the flowchart of FIG. 5 are taken as an example: in step S1', the red sub-light source 2211 and the blue sub-light source 2213 and the second light source 222 in the first light source 221 are turned on. a green sub-light source 2222, and a red sub-light source 2231 and a blue sub-light source 2233 in the third light source 223; a green sub-light source 2212 in the first light source, a non-green sub-light source 2221, 2223 in the second light source, and a third light source a medium green sub-light source 2232; a green sub-optical switch 2212' in the first optical switch, a non-green sub-optical switch 2221', 2223' in the second optical switch, and a green sub-optical switch 2232' in the third optical switch; In S2', the green sub-light source 2212 in the first light source 221, the red sub-light source 2221 and the blue sub-light source 2223 in the second light source 222, and the green sub-light source 2232 in the third light source 223 are turned on; a non-green sub-light source 2211, 2213, a green sub-light source 2222 in the second light source, and a non-green sub-light source 2231, 2233 in the third light source; the non-green sub-optical switches 2211', 2213' in the first optical switch are turned off, the second light Green light switch 2222 in the switch ', the non-green sub-optical switches 2231', 2233' in the third optical switch.

Taking the first sub-display area 201 as an example, in step S1, red light and blue light may be provided by the red sub-light source 2211 and the blue sub-light source 2213 in the first light source 221 to display red and blue components in the picture. The first sub-display partition 201 can be prevented from being subjected to the green sub-light source 2222 in the second light source 222 by turning off the second sub-optical switch unit 2212' (the green sub-switch unit of the first sub-display partition in this embodiment). The interference, but at this time, the non-green sub-light source in the second light source is also turned off, that is, the first sub-display partition 201 may not be interfered by the second light source 222. In step S2', the first sub-display partition 201 can display the green component in the picture, and since the non-green sub-optical switches 2211', 2213' in the first sub-display section 201 are all closed, they are not subject to the second The interference of the red sub-light source 2221 and the blue sub-light source 2223 in the light source is not interfered by the second light source 222 corresponding to the second sub-display section 202.

Similarly, the second sub-display partition 202 and the third sub-display partition 203 can also achieve the partition adjustment backlight intensity through the driving manner described in S1'~S2', but the problem that adjacent backlights do not interfere with each other is not caused.

In addition, the present invention can also be applied to a monochrome display device. For example, each of the sub-light sources in the device of FIG. 3 uses the same color light source, and each of the sub-switch units adopts a liquid crystal pixel that can control the transmittance of the color light source. Taking the following steps S1"~S2" of the apparatus and the flowchart of FIG. 6 as an example: in step S1", the first light source 221 and the third light source 223 are turned on; the second light source 222 is turned off; and the second optical switch unit 242 is turned off; In step S2", the second light source 222 is turned on; the first light source 221 and the third light source 223 are turned off; and the first optical switch unit 241 and the third optical switch unit 243 are turned off.

Taking the first sub-display partition 201 as an example, in step S1", since the second light source 222 has been turned off, it is not interfered by the second light source 222, and in step S2", because the first sub-display partition 201 The optical switch unit 241 has been turned off and is not interfered by the second light source 222. Similarly, the second sub-display partition 202 is not interfered by the first light source 221 and the third light source 223, and the third sub-display partition 203 is not interfered by the second light source 222. Therefore, it is possible to achieve the purpose of adjusting the backlight intensity in the monochrome display device without causing adjacent backlights to interfere with each other.

Although the red photon source, the green photon source and the blue sub-source are taken as an example, the sub-light source may be selected from the red photon source and the green photon, in addition to the red photon source, the green photon source and the blue sub-source. A combination of a light source and a blue sub-light source, for example, a violet photon source composed of red and blue light, and the like. In principle, an equivalent white light source can be formed by adjusting the opening time and light intensity of each sub-light source.

In addition, the present invention can be applied to a color liquid crystal display device or a general liquid crystal display device. Generally, the liquid crystal display device uses a timing controller and a display driving circuit to apply a voltage to the liquid crystal display panel to control the transmittance of each liquid crystal pixel. The backlight module requires another backlight driving circuit for backlight switching and brightness control. When implementing the multi-region backlight control method of the present invention, when a sub-optical switch needs to be turned off, the corresponding voltage is input through the display driving circuit to reduce the liquid crystal pixel transmittance, and when the sub-optical switch is not When it needs to be turned off, the display driving circuit displays the image according to the corresponding voltage input to the liquid crystal pixel.

In summary, the multi-region dynamic backlight driving device and the method thereof can utilize the mutual opening and closing of the light source and the opening and closing of the optical switch unit to reduce the light field between the adjacent backlight sources. Interference effect, therefore, each group of backlight sources from the backlight module can provide a corresponding display area to display images with a display effect closer to the target brightness, color contrast, and color saturation after passing through the liquid crystal unit, The contrast between the bright area and the dark area in the displayed image is more prominent, and the stereoscopic and realism of the image can also be improved at the same time.

The above description of the embodiments of the present invention is intended to be understood by those skilled in the art, and the invention may be practiced without departing from the scope of the invention. Equivalent modifications or modifications made by the spirit of the invention should still be included in the scope of the claims described below.

101. . . First display area

102. . . Second display area

103. . . Third display area

121. . . First backlight

122. . . Second backlight

123. . . Third backlight

141. . . Light blocking unit

142. . . Light blocking unit

201. . . First sub display partition

202. . . Second sub-display partition

203. . . Third sub display partition

221. . . First light source

222. . . Second light source

223. . . Third light source

2211. . . First sub-light source

2212. . . Second sub-light source

2213. . . Third sub-light source

2221. . . Fourth sub-light source

2222. . . Fifth sub-light source

2223. . . Sixth sub-light source

2231. . . Seventh sub-light source

2232. . . Eighth sub-light source

2233. . . Ninth sub-light source

241. . . First optical switch unit

242. . . Second optical switch unit

243. . . Third optical switch unit

2211’. . . First sub-optical switch unit

2212’. . . Second sub-optical switch unit

2213’. . . Third sub-optical switch unit

2221’. . . Fourth sub-optical switch unit

2222’. . . Fifth sub-optical switch unit

2223’. . . Sixth sub-optical switch unit

2231’. . . Seventh sub-optical switch unit

2232’. . . Eighth sub-optical switch unit

2233’. . . Ninth optical switch unit

The first figure is a schematic diagram of a conventional architecture using backlight partition dimming.

The second figure is a schematic structural view of a multi-region backlight module having a light blocking structure.

The third figure is a schematic diagram of an architecture of a multi-region dynamic backlight driving device according to the present invention.

4 to 6 are flow charts of a method for multi-region dynamic backlight driving of the present invention.

201. . . First display partition

202. . . Second display partition

203. . . Third sub display partition

221. . . First light source

222. . . Second light source

223. . . Third light source

2211. . . First sub-light source

2212. . . Second sub-light source

2213. . . Third sub-light source

2221. . . Fourth sub-light source

2222. . . Fifth sub-light source

2223. . . Sixth sub-light source

2231. . . Seventh sub-light source

2232. . . Eighth sub-light source

2233. . . Ninth sub-light source

241. . . First optical switch unit

242. . . Second optical switch unit

243. . . Third optical switch unit

2211’. . . First sub-optical switch unit

2212’. . . Second sub-optical switch unit

2213’. . . Third sub-optical switch unit

2221’. . . Fourth sub-optical switch unit

2222’. . . Fifth sub-optical switch unit

2223’. . . Sixth sub-optical switch unit

2231’. . . Seventh sub-optical switch unit

2232’. . . Eighth sub-optical switch unit

2233’. . . Ninth optical switch unit

Claims (18)

A multi-region dynamic backlight driving method for adjusting a display device having a backlight module and a display panel, wherein the display panel has a first optical switch located at a first sub-display area and a second optical switch a second sub-display partition, the backlight module has a first light source located in a first backlight partition, and a second light source is located in a second backlight partition, the first light source and the second light source are configured to generate a first color light The first optical switch and the second optical switch are configured to control a transmittance of the first color light, and the multi-region backlight driving method includes: turning on the first light source and turning off the second light at a first sub-picture time a light source, the second light switch is controlled to prevent the first color light from passing through the second sub-display partition; and at a second sub-picture time, the second light source is turned on, the first light source is turned off, and the first light is controlled The switch prevents the first color ray from passing through the first sub-display partition. The multi-zone dynamic backlight driving method of claim 1, wherein the display panel is a liquid crystal display panel, the first optical switch is a first pixel of the liquid crystal display panel, and the second optical switch a second pixel of the liquid crystal display panel, controlling the first optical switch to prevent the first color light from controlling the liquid crystal molecules in the first pixel from the first sub-display partition of the panel The first color ray has a transmittance of about zero at the first pixel, and controlling the second optical switch prevents the first color ray from controlling the second picture from the second sub-display partition of the panel by means of the finger The liquid crystal molecules within the element cause the first color light to have a transmittance of about zero at the first pixel. The multi-region dynamic backlight driving method of claim 2, wherein the first pixel has a first filter layer, and the first filter layer can only pass the first color light, the second The pixel has a second filter layer, and the second light layer can only pass the first color light. The multi-zone dynamic backlight driving method of claim 1, wherein the first sub-picture time length is greater than the second sub-picture time, and the brightness of the first light source is less than when the second light source is started. Brightness. The multi-zone dynamic backlight driving method of claim 4, wherein the brightness of the first light source when turned on and the brightness of the second light source when turned on are the first sub-picture time and the second sub-picture time Inverse ratio. The multi-zone dynamic backlight driving method of claim 1, wherein the display panel further has a third optical switch located in the first sub-display partition, and a fourth optical switch is located in the second sub-display partition, The backlight module further has a third light source located in the first backlight partition, a fourth light source is located in the second backlight partition, the third light source and the fourth light source are used to generate a second color light, the third optical switch And the fourth optical switch is configured to control the transmittance of the second color light, the multi-region backlight driving method further includes: turning on the fourth light source, turning off the third light source, controlling the The third optical switch prevents the second color light from passing through the first sub-display partition; and at the second sub-picture time, turns on the third light source, controls the fourth light source, and turns off the fourth optical switch to make the first The two color rays cannot pass through the second sub display partition. The multi-zone dynamic backlight driving method of claim 6, wherein the display panel further has a fifth optical switch located in the first sub-display partition and the sixth optical switch is located in the second sub-display partition, the backlight The module further has a fifth light source located in the first backlight partition, a sixth light source is located in the second backlight partition, the fifth light source and the sixth light source are used to generate a third color light, the fifth optical switch and The sixth optical switch is configured to control the transmittance of the third color light. The multi-region backlight driving method further includes: turning on the fifth light source at the first sub-picture time, turning off the sixth light source, and controlling the first a six-light switch prevents the third color light from passing through the second sub-display partition; and at the second sub-picture time, turning on the sixth light source, turning off the fifth light source, and controlling the fifth optical switch to make the third Color rays cannot pass through the first sub-display partition. The multi-zone dynamic backlight driving method of claim 7, comprising adjusting the first sub-picture time and the second sub-picture time according to brightness of different light sources, so that the backlight of the backlight module is An equivalent white light source. A multi-region dynamic backlight driving method as described in claim 7 of the patent application, The display panel further has a seventh optical switch and an eighth optical switch located in a third sub-display area, wherein the backlight module further has a seventh light source and an eighth light source located in a third backlight partition. a seventh light source for generating the first color light, an eighth light source for generating the second color light, the seventh optical switch for controlling a transmittance of the first color light, the eighth optical switch for controlling The multi-region backlight driving method further includes: turning on the seventh light source at the first sub-picture time, turning off the eighth light source, and turning off the eighth optical switch to make the second color The light cannot pass through the third sub-display partition; and at the second sub-picture time, the eighth light source is turned on, the seventh light source is turned off, and the seventh optical switch is turned off to prevent the first color light from being removed from the third sub-light The display partition passes. A multi-region dynamic backlight driving method for adjusting a display device having a backlight module and a display panel, wherein the display panel has a first optical switch, a second optical switch, and a third optical switch at a first a sub-display partition, a fourth optical switch, a fifth optical switch, and a sixth optical switch are located in a second sub-display partition, the backlight module has a first light source, a second light source, and a third light source. a first backlight source, a fifth light source, and a sixth light source are located in a second backlight partition, the first light source and the fourth light source are configured to generate a first color light, the second light source, the second light source The fifth light source is configured to generate a second color light, the third light source is used to generate a third color light, and the first optical switch and the fourth optical switch are used to control the wearing of the first color light. Transmittance, the second optical switch and the fifth optical switch are used for controlling the transmittance of the second color light, and the third optical switch and the sixth optical switch are used for controlling the transmittance of the third color light, The multi-region backlight driving method includes: at first Screen time, turning on the first light source, turning off the second light source and the third light source, controlling the second optical switch and the third optical switch to prevent the second color light and the third color light from being removed from the first sub Displaying the partition passage; opening the second light source at a second sub-picture time, turning off the first light source and the third light source, controlling the first optical switch and the third optical switch to make the first color light and the first three The color light cannot pass through the first sub-display partition; and at a third sub-picture time, the third light source is turned on, the first light source and the second light source are turned off, and the first optical switch and the second optical switch are controlled. The first color light and the second color light are prevented from passing through the first sub-display partition. The method of claim 10, further comprising adjusting the first light source, the second light source according to the first sub-picture time, the second sub-picture time, and the third sub-picture time, The brightness of the third light source is such that the backlight of the backlight module provides an equivalent white light source of the display panel. The multi-region dynamic backlight driving method of claim 10, further comprising: turning on the fifth light source at the first sub-picture time, turning off the fourth light source and the sixth light source, and controlling the fourth light The switch and the sixth optical switch prevent the first color light and the third color light from passing through the second sub-display partition; at the second sub-picture time, turning on the sixth light source, turning off the fourth light source and the a fifth light source, the fourth optical switch and the fifth optical switch are configured to prevent the first color light and the second color light from passing through the second sub-display partition; and at a third sub-picture time, the first light is turned on The fourth light source, the fifth light source and the sixth light source are turned off, and the fifth light switch and the sixth light switch are controlled to prevent the second color light and the third color light from passing through the second sub display partition. The method of claim 12, further comprising adjusting the fourth light source, the fifth light source according to the first sub-picture time, the second sub-picture time, and the third sub-picture time, The brightness of the sixth light source is such that the backlight of the backlight module provides an equivalent white light source of the display panel. A multi-region dynamic backlight driving method for adjusting a display device having a backlight module and a color liquid crystal display panel, wherein the backlight module has a first sub-backlight partition, a second sub-backlight partition, and a first a three-substance backlight partition, the display panel has a first sub-display partition, a second sub-display partition, and a third sub-display partition, The area backlight driving method includes: providing a first color light from the first sub-backlight partition at a first sub-picture time, and providing a second color light from the second sub-backlight partition, providing from the third sub-backlight partition a third color light is applied to the liquid crystal display panel, the pixel of the non-first color in the first sub-display partition is turned off, and the pixel of the second color in the second sub-display area is turned off, and the second pixel is closed. Sub-displaying a pixel of a non-third color in the partition; and providing the third color light from the first sub-backlight partition at a second sub-picture time, and providing a first color light from the second sub-backlight partition The third sub-backlight partition provides a second color light to the liquid crystal display panel, and closes the pixel of the non-third color in the first sub-display area, and closes the pixel of the second sub-display area that is not the first color. , closing the pixel that is not in the second color of the second sub-display partition. The multi-region dynamic backlight driving method of claim 14, further comprising: providing the second color light from the first sub-backlight partition at a third sub-picture time, providing from the second sub-backlight partition a third color light, providing a first color light from the third sub-backlight partition to the liquid crystal display panel, closing the pixel of the second sub-color in the first sub-display partition, and closing the second sub-display area A pixel of the third color of Central Africa, closing the pixel of the non-first color in the second sub-display partition. The multi-region dynamic backlight driving method of claim 15, further comprising: adjusting the first sub-picture time, the second sub-picture time, and the third sub-picture according to different brightness of different light sources in the backlight module. The length of the screen is such that the backlight of the backlight module provides an equivalent white light source to the liquid crystal panel. A liquid crystal display device comprising: a liquid crystal display panel having a first pixel on a first sub-display partition of the liquid crystal display panel, a second pixel on a second display partition of the liquid crystal display panel; a backlight module a first backlight source having a first light source located in the backlight module a second light source is located in the second backlight partition of the backlight module; a liquid crystal display driving circuit controls the plurality of liquid crystal pixel transmittance; and a backlight driving circuit controls the switching and brightness of the plurality of backlights Wherein, in a first sub-picture time, the backlight driving circuit turns on the first light source to turn off the second light source, and the liquid crystal driving circuit turns off the second pixel so that the light emitted by the first light source cannot be removed from the second The sub-display partition passes, and in a second sub-picture time, the backlight driving circuit turns on the second light source to turn off the first light source, and the liquid crystal driving circuit turns off the first pixel to make the light emitted by the second light source Unable to pass the partition from the first child. A color liquid crystal display device includes: a backlight module having a first light source and a second light source located in a first backlight partition of the backlight module, wherein a third light source and a fourth light source are located in the backlight module a second backlight partition, wherein the light generated by the first light source and the third source is a first color, and the light generated by the second light source and the fourth light source is a second color; and a liquid crystal display panel has a The first sub-pixel and the second sub-pixel are located in a first sub-display partition of the liquid crystal display panel, and a third sub-pixel and a fourth sub-pixel are displayed on the second sub-display partition of the liquid crystal display panel, wherein The first sub-pixel and the third sub-pixel control the transmittance of the first color light, the second sub-pixel and the fourth sub-pixel control the transmittance of the second color light; a display driving circuit, controlling the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel transmittance; and a backlight driving circuit for controlling the first light source, the first a light source, a third light source, a switch and brightness of the fourth light source; In a first sub-picture time, the backlight driving circuit turns on the first light source to turn off the second light source, and the liquid crystal driving circuit turns off the second sub-pixel so that the light emitted by the first light source cannot be removed from the first sub-light The display partition passes, and in a second sub-picture time, the backlight driving circuit turns on the second light source to turn off the first light source, and the liquid crystal driving circuit is turned off. Closing the first sub-pixel prevents the light emitted by the second light source from passing through the second sub-display partition.