TW200912862A - Method for controlling backlight module - Google Patents

Abstract

A method for controlling a backlight module is disclosed. The backlight module comprises a plurality of light sources for providing light to a display panel. The control method comprises the following steps of: providing a video clip having a moving image block to the display panel, wherein the video clip comprises a first frame and a second frame sequentially displayed on the display panel at a first frame display time point and a second frame display time point; deciding a first turn on time for the light sources in accordance with location of the moving image block of the first frame and turning on the light sources; turning off the light sources after a predetermined light emitting time; and deciding a second turn on time point for turning on the light sources in accordance with location of the moving image block of the second frame and turning on the light sources.

Description

200912862 IX. Description of the Invention: [Technical Field] The present invention relates to a control method for a backlight module, and more particularly to a method for controlling a flash-backlight module (flash-backligh). [Prior Art] It has been observed that televisions and displays made of liquid crystal display technology are mass-produced and gradually replace the conventional cathode ray tubes (Cath〇de Ray).

TV and display made by Tube ’ CRT). However, compared with the cathode cathode tube, the current liquid crystal display technology still has the defects and limitations to be overcome and improved. The conventional liquid crystal display uses a flash-backHgh to display the kneading surface. This method can effectively simulate the pulse mode (lmpulse type) of the cathode ray tube, and the backlight in the liquid crystal display. Intermittently turn on and off to reduce the liquid crystal display time, which is to reduce the residual image (After Image) that the human eye feels. However, it is limited by the nature of the backlight. When the liquid crystal display plays a moving image, =: . This image sticking phenomenon is caused by the display panel displaying the video movie. 4 = The position where the moving image appears in the display panel cannot be switched to the whole. In order to solve the problem of afterimage, many techniques have been developed to switch the position of the moving image to the all black state. Xiji in May refers to the first picture, the doubling of the thousands of feathers - 矣 0 does not know the scanning of the liquid crystal display 10 is not intended to 'the structure of the backlight module u and the light source 18, display - start" 12 The light source source * the source 18, the display panel 21 has the display area & the light source 12, the light source 14, the light source 16 and the light source 18 and the display area 22, 24, 26 and 28, the light in the basin, the original center for the light to the display ', first/original 12 series corresponds to display area 5 200912862 22 'Light source 14 corresponds to display area 24; light source 16 corresponds to display area 26; light source 18 corresponds to display area 28. Please refer to Fig. 2 A schematic diagram showing the switching timing of a light source using a backlight module of a flash backlight, wherein Sa, Sb, Sc, and Sd are display areas 22, 24, 26, and 28 in each frame. The data signal 'and the display areas 22, 24, 26, and 28 sequentially receive Sa, sb, Se, and s Ο 依 sequentially in each frame time over time to display the kneading surface. However, the light source 12 of the backlight module 11 , the light source 14, the light source 16 and the light source 18 are simultaneously a predetermined time in each frame time

When it is turned on, it is turned off at the same time after a fixed time, that is, the backlight module U only provides a fixed time light source for the display panel at a preset time within a frame time. According to FIG. 2, the display area 26 receives the data signal Se and displays the surface after the light source 16 is turned on in each frame time. If the moving image appears on the display area 26, the display panel 21 is displayed. Double lmage. Similarly, after the light source 18 is turned on for a while, the display area 28 receives the data signal Sd and displays the side surface. If the moving image appears in the display area 28, the display panel 21 may also have a ghosting problem. Since the control method of the conventional backlight module 1G has the above-mentioned disadvantages, a scanning backlight (Seanning Backlight) technology has been developed to replace the above-described backlight module control method. Select the earth's heart 3 ^ 'The application of the conventional scanning mode backlight technology, the old mode, the switching timing diagram of the light source, in which the display area 22, 24, % and Μ receive their pictures in sequence _sa, sb, st^sd, ==, the light source 12, the light source 14, the light source 16 and the light source 18 will display the area according to the display time of the corresponding display areas 22, 24, 26 and 28 in sequence 200912862 'on' The display time of 22, 24, 26 and 28 is determined by the reception timing of the data signals Sa Sb, Se and Sd. Since the light source is turned on, the 'turn-to-turn system' is determined according to the display time of the display II fields 22, 24, 26, and 28 corresponding to the mother-light source, so that the ghosting problem of the above-mentioned prior art can be effectively solved, but the frame switching is performed. When the moving image appears, the position of the moving image will still be affected by the light of the adjacent light source. For example, when the moving image appears in the display area 24 k, the display area is displayed when the light source 12 emits light into the display area, causing the light source 14 not to be turned on. 24 The light that has been emitted by the light source 12 is so that the display area 24 cannot reach the all black state. Similarly, the light source 16 also emits light into the display area 28, causing the light source 18 not to be turned on. The display area 28 remains: there is light from the light source 16 that is emitted, so that the area covered by the light source 16 cannot reach the all black state. Therefore, a new backlight module control method is needed. The control method can turn off the light source of the backlight module when the display panel displays the frame of the video film, so that the display panel enters a state of full black and does not cause display. The phenomenon of ghosting on the panel. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a control method for a backlight module to provide better animation quality. According to the purpose of the present invention, a control method for a backlight module is provided. The backlight module includes a plurality of light sources for providing light to the display panel. The control method includes at least: providing a video film with a moving face block to the display panel, wherein the video film includes at least the first picture, and the second frame 'and sequentially displays the time point and the first frame in the first frame respectively. A frame starts to display the time point displayed on the display panel, and the first frame 200912862 and the first frame have a moving face block. Then, according to the position of the moving y image block of the first frame, the __light source opening time point of the light source is determined and N is turned on. Then, after the light source turns on the preset lighting time, turn off the light source. Then, according to the position of the moving image block of the second frame, the second light source on time point of the light source is determined, and the light source is turned on in time. According to the purpose of the present invention, another control method of a backlight module is proposed. The control method includes at least: providing a plurality of moving face blocks Ο

The video film is displayed on the display panel, wherein the video film includes at least the first frame and the second frame, and the time points and the pictures are displayed in the first frame in sequence, respectively. a display panel, and the first frame and the first moving surface block and the second frame have a second moving surface area. Then, according to the position of the first moving image block of the first frame, one of the first light source opening time points of the light source is determined and the light source is turned on in time. Then, after the light source is turned on for a predetermined lighting time, the light source is turned off. Determining the estimated turn-on time of the light source according to the position of the second moving image block in the second frame. Then, according to whether (Pb-Pa)/Dt is less than 〇〇2, one light source is turned on at a time point and the light source is turned on in time. , wherein the time difference between the estimated opening time point and the second frame starting to display the time point, pa is the time difference between the first light source opening time point and the first frame starting display time point 'Dt is the light source Luminous time. Further, although (Pb-Pa)/Dt is less than or equal to 〇 〇 2, the second light source on time point is the estimated turn-on time point. Etc.; when (10) the heart is greater than 〇·02, the second light source is turned on at a time point of 4 at 0.02*m+Pa. According to the object of the present invention, a control method 200912862 of a backlight module is proposed, and the control method includes at least: a video film having a plurality of moving picture blocks to a display panel, wherein the video film is at least The first frame and the second frame are included, and the first frame is displayed in sequence. The second frame starts to display the time point to display the display panel, and the first frame and the second frame are simultaneously displayed. There is a first moving picture block and a second moving picture block. Then, the main moving picture block is determined according to the displacement amount between the first frame and the second frame of the first moving picture block and the second moving picture block. Then, according to the position of the main moving image block of the second frame, the second light source on time point of the light source is determined and the light source is turned on in time. Then, after the light source turns on the preset lighting time, the light source is turned off. [Embodiment] Please refer to FIG. 4 and FIG. 5 at the same time. FIG. 4 is a schematic structural view of a liquid crystal display 1 according to a first embodiment of the present invention, and FIG. 5 is a diagram showing the structure of the liquid crystal display according to the first embodiment of the present invention. A schematic structural diagram of a video film 1〇2 of an embodiment. The liquid crystal display 100 includes a backlight module 112 and a display panel 114. The backlight module 112 includes a plurality of light sources 116 (eg, 164, 166, and 168) and the display panel 114 includes a plurality of display areas U8 (eg, 172, 174, 176 and 178) for displaying the video film 102' wherein the light source 162, the light source 164, the light source 166 and the light source 168 respectively provide light to the corresponding display areas 172, 174, 176 and 178, wherein each display area 172, 174, 176, and 178 each have a plurality of scanning lines 120, and the plurality of scanning lines 120 sequentially scan each of the display areas 172, 174, 176, and 178 from top to bottom to sequentially open the display areas in sequence. 172, 174, 176, and 178 are used to display the video film 102. Similarly, the 200912862 display area m is displayed sequentially from top to bottom. For example, after a plurality of scan lines 120 in the display area i72 are sequentially turned on, a plurality of scan lines in the display area m are sequentially turned on, and a plurality of scan lines in the display areas 17...78 are sequentially turned on. . Each of the light sources 162, 164, 166 or 168 is comprised of one or more light source generators. The video shadow #102 includes a plurality of frames 146 (e.g., 14 and 146b), and each frame 146 is divided into a plurality of frame regions 148 (e.g., 182, 184, 186, and 188 or 192, 194). , 196 and 198), wherein the frame area 182, the frame area 184, the frame area 186, and the frame area 188 are respectively displayed on the corresponding display areas 172, 174, 176, and 178; likewise, the frame area 192 The frame area 194, the frame area 196, and the frame area 198 are also displayed on the corresponding display areas 172, 174, 176, and 178, respectively. The video film 1 〇 2 has a moving image block 149, and the position of the moving image block 149 at each frame 146 can be displayed on the display panel 114 to make the human eye feel that the moving image block 149 is moving. The frame 146 includes a first frame 146a and a second frame 146b, wherein the second frame 14 is continuously displayed after the first frame 146a. The light source 116 includes light sources 162, 164, 166, and 168, the display area 118 includes display areas 172, 174, 176, and 178, and the first frame 146a includes frame areas 182, 184, 186, and 188, and the second frame U6b contains frame areas 192, 194, 196, and 198. The light source 162 is for providing light to the display area 172, and the display area 172 is for displaying the frame area 182 or 192; the light source 164 is for providing light to the display area 丨74, and the display area 174 is for displaying the frame Region 184 or 194; light source 166 is used to provide light to display area 176, while display area 176 is used to display 200912862 frame area 186 or 196; light source 168 is used to provide light to display area 178, and display area 178 Used to display the frame area 188 or (10). Please refer to FIG. 6, which shows the timing of the display time point at the beginning of each display area Π2, 174, 176 and 178 according to the first embodiment of the present invention, wherein the vertical axis represents each The display areas 172, 174, the doors 6 and 178 are located at the position where the display 114 is displayed, and the horizontal axis represents the value of the display time point at the beginning of each of the display areas 172, 174, 176 and 178. The position of the last opened scan line in the display areas 172, 174, (7), and 178 is defined, wherein the last open scan line is the last scan line in each display area when the panel 114 displays each frame 146. The first embodiment of the present invention is to display the mother-frame on the display panel u4, and display the time point at the beginning of one of the display areas 118 to simultaneously turn on the light source 116, so that the light source 116 continues to emit light for a preset illumination time. At the same time, the light source i! 6 is turned off, for example, the light source on time point is the display time point of the display area 174. In addition, when the display panel ΐ4 displays each frame 146, the backlight module 112 performs only the opening and closing operations of the secondary light source ι 6 , so the preset lighting time is smaller than that required by the display panel j4 to display each frame 146. time. • The display panel m displays each frame area 148 according to the paste display area 118, and the display time point of each display area is displayed with its position in the display field ιΐ4. Therefore, the display time of each display area 118 is displayed. The value of the point is that the display area 118 sequentially distributes the right P at the position where the listen 114 is displayed, and the adjacent area starts to display the time difference of the time point, for example, the number of parent-display areas 172' 174, 176 and 178 scan lines 120 11 200912862 " With reference to Fig. 6, the beginning of the display of the open (four)_main field 118 is displayed at time points = Γ 332 ' 334, 336 and 338. The display area m time point 332 starts to be displayed to display the position of the frame one, the value of the display time point 332, Atl, and the display area π, ,, y. The display area 174 is started at the start display time point 334. The shoulder is not 'displayed to the frame area 184. 334" * 194, where the start time point is displayed at the position of the door M i field 174 is ... display area 176 336 begins to display to display _ = where I start to display time point 336, display area 176 1 is set to A display area 178 is tied to start display time, point 338 begins = where frame area 188 or 198 is displayed, where The value of the start display time point 338 is t4, and the position of the display area 178 is Z. Figure 7 is a flow diagram of the control method 400 according to the first embodiment of the present invention m and m. The video film 1〇2 is provided to the display panel 114, and the display panel ιΐ4 opens the display area 4118 to display the video film 1G2. Then, in the step 2', according to the moving image block 149, each frame 146 The position of the frame area is determined as one of the frame areas 148 and has a frame area of the moving image block 149, such as the frame area 182 or the figure of FIG. Box area 196. In step 43, according to the animation The position of the frame area determines the dynamic display area, wherein the dynamic display area is one of the display areas 118 and is displayed on the display panel ii4 each: the frame 146 is used to display the dynamic image pivot area. Step 4: In the middle, the light source on time point is determined according to the start time point of the dynamic display area. In step 450, the display panel 114 displays every 200912862 • block 146 'turn on the backlight at the same time when the light source is turned on. The light source 116 of the module 112, and the light source 116 is maintained for a preset illumination time, and then the light is turned off at the same time. The source 116 uses the control method 400' of the backlight module 114 to enable the display panel 114 to start displaying. At the instant of each frame 146, the light of the light source 116 cannot be received. Moreover, since the light source on time of the light source 116 is determined according to the opening time of the animation display area, the double image problem caused by the phase error can be avoided. Referring to Fig. 8, there is shown a flow chart of a method for controlling the moonlight mode and group 112 according to the second embodiment of the present invention. The control unit of the backlight module m The 500 series is similar to the control method 4, but the control method includes a control method for the brightness of the backlight module 112. In step 51, the frame area luminance value of each frame area 148 is extracted and selected. The maximum value of the frame area is obtained to obtain the brightness reference value. In step 520, the brightness value provided by the light source 116 is lowered by the reference value of the avoidance reference value, and each display area 148 is adjusted correspondingly. The arrangement of the 曰曰曰 molecules is such that the brightness value of each frame area remains unchanged. FIG. 9 and FIG. 9 show the light source on time point of the light source 116 according to the third embodiment of the present invention. Schematic diagram of the timing. The display panel 114 starts displaying the first frame 146a at the beginning of the first frame display time point 55, and turns on the light source ι 6 at the light source on time. Similarly, the display panel 114 is shown at the beginning of the second frame display time point 552 to begin displaying the first frame 146b' and is expected to turn on the source μ at the estimated on time point 556. • Pa is the light source turn-on time point 554 minus the first frame start display time point 550 day ^ ϋ value ' Pb is the estimated turn-on time point minus the second frame 13 200912862 start display time point 552 time difference; Ft is the time required for display panel 114 to display each frame ;6; Dt is the illuminating time of light source 116. The value obtained by the time-integration of the light source 116 is the brightness provided by the light source. Therefore, if (Pb-pa)/Dt is greater than or equal to 〇〇2, it means that the value of pb pa is too large, which may cause the display panel 114 to be in the video. When #1〇2 switches from the first frame_ to the second frame_, there is a temporary decrease in brightness, which causes the human eye to see the phenomenon of flieker, f is the light source, i 16 is not suitable for estimation. The turn-on time point 556 is turned on. Referring to FIG. 1G, there is shown a flow chart of a control method of the backlight module 112 according to the third embodiment of the present invention. In step 61, the video film 102 is provided to the display panel 114, so that the display area ι 8 displays the video movie 1〇2. In step 620, the first moving frame area is determined according to the position of the moving image block 149 at the first frame i, wherein the first moving frame area is the first frame 146 & Among the box areas ιΐ8 -. In step 63, according to the position of the first animation frame area, the first-acting book display +1., ... domain 'where the first-moving display area is the day α ^ ^ of the display area 118, When one of the frames (10) is displayed on the display panel 114, the first frame area is displayed. In the step milk, the first light source opening time point is determined according to the beginning time of the reading month s _ + A of the first animation display area. In step 640, when the first frame 146a is displayed on the display panel m, the light source 11 背光 of the backlight module ι 2 is simultaneously turned on at the first light source on time point, and the light source 116 is difficult to maintain % && f + After the preset illumination time, the r source m is simultaneously turned off. In step 650, according to the position of the moving image block 149 located at the second frame 146b, the second moving frame area is determined, wherein the second moving picture frame area is the second picture. (4) One of the 14 200912862 of her frame area 148. In step 660, the second animation display area is determined according to the second animation frame area, wherein the second animation display area is one of the display areas 118, and the second frame is displayed on the display panel 114. When fighting, the second animation frame area is displayed. In step 67, the estimated on time point 556 is determined based on the on time point of the second motion display area. In step 680, it is judged whether (Pb_Pa) / Ft is smaller than 〇 〇 2 and the judgment result is output. In step 690, the second light source is turned on according to the determination result, and when the second frame 丨46b is displayed on the display panel 114, the light source 116 is simultaneously turned on at the second light source on time, and the light source 116 is maintained. After the preset lighting time, the light source 丨16 is turned off at the same time. In the above step 690, if the result of the determination is YES, the estimated on time point 556 is used as the second light source on time point. If the result of the judgment is no, 〇_〇2*; 〇1; +1^ is used as the value of the second light source on time point. The control method 600 of the present embodiment eliminates the flicker phenomenon by limiting the range of the light source on time point and provides good animation quality. Referring to FIG. 11 and FIG. 12 simultaneously, FIG. 9 is a schematic structural view of a video film 7〇2 according to a fourth embodiment of the present invention, and FIG. 12 is a video film 7 not according to the fourth embodiment of the present invention. A schematic diagram of the position of the moving image blocks 149 and 749 of FIG. The video film 7〇2 is similar to the video film 1〇2' but the first frame 146a and the second frame 14 of the video film 702 further comprise another moving image block 749' in which the moving image block 149 is located at the first The position of the frame 146a is (xi, y2): the position of the moving image block 749 at the first frame 146a is (x2, yi); the position of the moving image block 149 at the second frame 146b is (X3, y4). The moving image block 749 is located at the second frame 15 200912862, where the position is (heart 3), and 3^2, 73, and _ indicate the position of the display area U8 corresponding to each frame area 148, ^, χ 2. Χ3 and μ are the horizontal positions of the moving image blocks 149 and 749 along the corresponding display area. In order to improve the quality of the display panel 114 when displaying the video film, the present embodiment uses the control method 800 for the backlight module ι. Referring to Fig. 13, there is shown a flow chart of a control method 8 of the backlight module 112 of the fourth embodiment of the present invention. At step 81, the video film 702 is provided to the display panel 114. In the step, the moving image block 149 and 749 are located at the position of the first frame 14^ to determine the first moving position. The U-pictured position includes the moving image block (4) located at the first frame 146a. Χ1 and moving image block 749 are located at position x2 of the first frame M6a. In the step of the towel, the second moving position is determined according to the position of the moving image block 149 # 749 at the second frame. That is, the second moving position includes the moving image block 149 located at the second frame 146b. The position x3 and the moving image block 749 are located at position χ4 of the second frame 146b. In step 84 (), the second moving position 舆 the first animation position is correspondingly subtracted in a manner of -to- to obtain the displacement amount, that is, the displacement amount includes the first displacement amount and the second displacement amount. For the difference between the position X1 and the position X3, the second displacement amount is the position two: the difference of x4' wherein the displacement amount is the displacement of the moving image blocks 149 and 749 along the frame area 118 yfb county JU ^ In the incineration. In step 850, the largest of the displacements is selected to obtain the main moving image block, and the main moving image block is the moving image block 149 or 749. In step _, the main moving frame 16 200912862 frame area is obtained according to the position of the main moving image block located in the second frame 1 , and the main moving picture frame area is the second frame touching the picture frame area 148 . One of them, and has the main moving image block. In step 87, 'the main animation display area is determined according to the position of the main moving picture frame area'. The main animation display area is the center of the display area 118. When the second frame 1461 is displayed on the display panel 114, Used to display the main motion frame area. In step 880, the light source on time point is determined based on the start time point of the main animation display area. In step 89, display Ο

When the panel 114 displays the second frame 146b, the light source 116 is turned off at the same time as the light source is turned on and the light source 116 is maintained for a preset lighting time. The fourth embodiment of the present invention calculates the movement displacement weights of the plurality of moving image blocks of the video film 702, and then selects the light source on time point to enable the display panel 114 to provide better dynamic quality. Please refer to FIG. 14, which is a schematic structural view of a liquid crystal display 900 according to a fifth embodiment of the present invention. The fifth embodiment of the present invention is mostly the same as the liquid crystal display structure of the first embodiment. The liquid crystal display 9 includes a backlight module 912 and a display panel 914, but the different portions thereof are in the fifth embodiment. The backlighting module (Scanning Backlight) 912 replaces the flashing backlight module (fjash_backligh) in the first embodiment. In other words, the light source of the backlight module of the fifth embodiment is not simultaneously turned on and off. It is turned on and off at different points in time, and each light source 962, 964, 966 or 968 is composed of one or more light source generators. In addition, each of the display areas 972, 974, 976, and 978 of the fifth embodiment also includes a plurality of sub-display areas, such as 972a and 972b. As with the first embodiment, the light source 962, the light source 964, the 17200912862 light source 966 and the money 968 of the fifth embodiment respectively provide light to the corresponding display areas 972, 974, 976 and 978. Please refer to the 15th ® to correct the video film 902 of the fifth embodiment of the present invention. The video film 9〇2 contains a plurality of frames 9 private, and each frame 946 is divided into a plurality of frame areas 948 (for example, 982, 984, 986, and 988), wherein the frame area 982, the frame Region 984, frame region 986, and frame region 988 are displayed in corresponding display regions 972, 974, 976, and 978, respectively. The fifth embodiment of the present invention is mostly identical to the video film structure of the first embodiment, wherein the different portions are that each of the frame regions 982, 984, 986, and 988 of the fifth embodiment includes a plurality of sub-pictures. Box areas, such as 982a and 982b. Wherein, each frame area is not displayed in each of the opposite sub-display areas, for example, the sub-frame area 982 & is correspondingly displayed in the sub-display area 972a. The frame 946 of the video film 902 has a plurality of moving image blocks (e.g., 949a and 949b) located in different frame areas. Similarly to the first embodiment, the fifth embodiment determines each frame area according to the position of each of the moving image blocks (for example, 949a and 949b) in each of the frame areas 1; The animation sub-frame area 'and then the time point of the start of each frame area of each frame area to determine the corresponding light source on time point. Since the light source of the fifth embodiment is sequentially turned on at different time points in time, when the frame 946 of the video film 902 has a plurality of moving image blocks, the light source of the backlight module can move according to different moving image blocks. And adjust the opening time point to improve the display quality of the picture. Furthermore, if the same frame area has a plurality of moving image blocks, the method of the fourth embodiment may be used to determine the main moving image block and the main moving image frame area. Then adjust the light source on time. Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and it is understood that the scope of the present invention can be varied and modified without departing from the spirit and scope of the invention. This is subject to the definition of the scope of the patent application. BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments. Schematic diagram of the LCD display of 7R. ::The picture shows the application of the known flash-type backlight technology (-h __ the light source switch mode diagram of the light module. Light Η :: draw the source of the backlight module without the application of the scanning backlight technology Schematic diagram of a switch sequence diagram, a schematic diagram of a liquid crystal display according to a first embodiment of the present invention, and a first embodiment of the present invention according to the present invention, which is not according to the first embodiment of the present invention. The opening of the display area is not intended. Figure 7 is a flow chart showing the method of the 摅 益 。 。 。 。 。 。 。 。 。 。 。 。 。 背光 背光 背光 背光 背光 背光 背光 背光 背光 背光Fig. 8 is a flow chart showing the method according to the present invention. 19 200912862 FIG. 9 is a timing chart showing the light source on time of the light source according to the third embodiment of the present invention. FIG. 10 is a diagram showing the light source according to the present invention. Flowchart of the control unit of the backlight module of the third embodiment. Structure of the video film of the fourth embodiment. FIG. 11 is a schematic view of the video film according to the fourth embodiment. FIG. 12 is a schematic diagram of the present invention. invention

Schematic diagram of the location of the moving image block. Fig. 13 is a flow chart showing the control method of the backlight module of the fourth embodiment of the present invention. Fig. 14 is a view showing the structure of a liquid crystal display according to the fifth embodiment of the invention and the fifth embodiment of the invention. Fig. 15 is a view showing the structure of a video film according to a fifth embodiment of the present invention. [Main component symbol description] 10 : Liquid crystal display 11 : Backlight module 12 : Light source 14 : Light source 16 : Light source 18 : 21 : Display panel light source 22 : 24 : Display area display area 26 : 28 : Display area display area 30 : 100 Liquid crystal display scan line 102. Video film 112: backlight module 114: display panel 116: light source 118: display area 20 200912862 120: scan line 14 6 : frame 146a • first frame 146b: second frame 148: Frame area 149: Moving image block 162: Light source 164: Light source 166: Light source 168: Light source 172: Display area 174: Display area 176: Display area 178: Display area 182: Frame area 184: Frame area 186: Frame area 18 8 : Frame area 192 : Frame area 19 4 : Frame area 196 : Frame area 198 : Frame area 332 : Opening time point 334 : Opening time point 336 : Opening time point 338 : Opening time point 400 Control Method 410: Step 420: Step 430: Step 440: Step 450: Step 500: Control Method 510: Step 520: Step 530 Step 556: Estimate On Time Point 600: Control Method 610: Step 620: Step 630: Step 635: Step 640: Step 650: Step 660: Step 670: Step 680: Step 690: Step 702: Video Film 749: Moving Image Block 21 200912862 800 : Control Method 820 : Step 840 : Step 860 : Step 880 : Step 900 : Liquid Crystal Display 912 : Backlight Module 946 : Frame 946b : Second Frame 949a : Moving Image Block 962 : Light Source 966 · Light source 972 : Display area 972b : Secondary display area 976 : Display area 982 : Frame area 982b : Secondary frame area 986 : Frame area 992 : Frame area 996 : Frame area Pa : Time difference Ft : Frame Time Sa: data signal Sc: data signal 810: step 830 · step 850: step 870: step 890: step 902: video film 914: display panel 946a: first frame 948: frame area 949b: moving image block 964: light source 968: light source 972a: secondary display area 974: display area 978: display area 982a: secondary frame area 984. Domain 988: region frame 994: frame region 998. FIG frame area

Pb: time difference

Dt: lighting time

Sb: data signal

Sd: data signal

Claims (1)

200912862 X. Patent application scope: 1. A control method for a backlight module, wherein the backlight module comprises a plurality of light sources, wherein the light sources are used to provide light to a display panel, and the control method comprises at least: providing Moving the video of the video block to the display panel, wherein the video film includes at least a first frame and a second frame, and respectively displays a time point and a first frame in a first frame The second frame starts to display the time point displayed on the display panel, and the first frame and the second frame both have the moving picture block; determining according to the position of the moving image block in the first frame of the S-H One of the light sources is turned on by the first light source and the light sources are turned on in time; after the light sources are turned on - the preset light emitting time is turned off, the light sources are turned off; and, according to the moving image block of the first frame The position determines the time point at which the second light source is turned on, and turns on the light sources in time. The control method described in the first aspect of the patent application, wherein the light sources are simultaneously turned on and off. - The method of controlling the light, wherein the first value and the 3' point and the first frame start to display the time difference between the time points and the opening time point ι, the first light source opening time point and the second The time differences are equal. 23 200912862 4. The control method as described in claim 2, wherein the first light source refresh time point and the first __ frame start to display a time difference between the time point and the second light source turn-on time point The second frame starts to show that the time differences of the time points are not equal. 5. A method for controlling a backlight module, the backlight module comprising a plurality of light sources, wherein the light sources are used to provide a touch-to-display panel, the control method comprising at least: providing a plurality of moving face areas Video video of the block to the display panel, wherein the video film includes at least a first frame and a second frame, and respectively displays a time point and a second frame in a first frame to start displaying a time point is displayed on the display panel, and the first frame has a first moving face block and the second frame has a second moving face block; the first move according to the first frame Positioning the image block to determine a first light source on time point of the two light sources and turning on the light sources in time; after the light sources turn on a predetermined light emitting time, turning off the light sources; according to the second frame Positioning the second moving image block to determine an estimated turn-on time point of the light sources; and determining whether the (Pb-Pa)/Dt is less than 〇·〇2 to determine a time point of the light source Turning on the light sources, where pb is the time difference between the estimated opening time point of the 50th and the starting time point of the second frame, and Pa is the time point of the first light source opening time and the first frame starting time. The time difference, Dt, is the lighting time of the light sources. In the control method of claim 5, wherein the winter (Pb-Pa)/Dt is less than or equal to 〇〇2, the second light source on time point is the estimated turn-on time point. 7. The control method according to claim 5, wherein when (Pb-Pa)/Dt is greater than 〇_〇2, the second light source on time point is equal to 0.02*Dt+Pa. Ο 8. The control method of claim 5, wherein the light sources are simultaneously turned on and off. A control method for a backlight module, the backlight module includes a plurality of light sources, wherein the light sources are used to provide light to a display panel, and the control method includes at least: providing a plurality of moving picture blocks Video video to the display panel, wherein the video film includes at least a first frame and a second frame, and respectively displays a time point and a second frame in a first frame to start displaying time a dot is displayed on the display panel, and the first frame and the second frame simultaneously have a first moving face block and a second moving face block; according to the first moving picture block and the The displacement of the second moving facet block between the first frame and the second frame determines a main moving face block; according to the position of the main moving image block of the second frame Determining one of the light sources, the second light source is turned on, and the light sources are turned on in time; 25 200912862 and after the light sources are turned on for a predetermined light-emitting time, the light sources are turned off. Ίο. The control method of claim 9, wherein the light sources are turned on and off simultaneously. The method of controlling a backlight module, wherein the backlight module comprises at least a first light source and an ith light source respectively providing a display screen to the display panel, wherein the control method comprises at least: providing - having a plurality of moving surfaces Video video of the block to the display panel, wherein the video film includes at least a first frame displayed on the display panel and the first frame has a first moving picture block and a second moving picture Blocking; determining, according to the position of the first moving image block of the first frame, the first light source opening time point and turning on the first light source; and according to the first frame The position of the second moving image block determines the mth first light source opening time point and turns on the second light source in time. 12. The control method according to claim m, wherein the first light source is turned off after the first light source is turned on for a predetermined illumination time. [13] The control method of claim 5, wherein the light source is turned off after the second light source is turned on. 26