WO2012120675A1 - Liquid crystal monitor - Google Patents

Liquid crystal monitor Download PDF

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Publication number
WO2012120675A1
WO2012120675A1 PCT/JP2011/055619 JP2011055619W WO2012120675A1 WO 2012120675 A1 WO2012120675 A1 WO 2012120675A1 JP 2011055619 W JP2011055619 W JP 2011055619W WO 2012120675 A1 WO2012120675 A1 WO 2012120675A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
control circuit
data
crystal panel
lines
Prior art date
Application number
PCT/JP2011/055619
Other languages
French (fr)
Japanese (ja)
Inventor
勇 釼持
Original Assignee
Ｎｅｃディスプレイソリューションズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by Ｎｅｃディスプレイソリューションズ株式会社 filed Critical Ｎｅｃディスプレイソリューションズ株式会社
Priority to PCT/JP2011/055619 priority Critical patent/WO2012120675A1/en
Publication of WO2012120675A1 publication Critical patent/WO2012120675A1/en

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G09G3/3666—Control of matrices with row and column drivers using an active matrix with the matrix divided into sections
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/04—Partial updating of the display screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/0646—Modulation of illumination source brightness and image signal correlated to each other
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving

Definitions

  • the present invention relates to a liquid crystal monitor (liquid crystal display).
  • the light source of the LCD backlight is divided into multiple blocks, and the lighting timing or brightness is changed for each of the divided blocks.
  • a control method is used (see, for example, Patent Document 1).
  • the power consumption part includes a liquid crystal control circuit that drives a liquid crystal element that controls transmission of light emitted from the light source of the backlight in the liquid crystal panel in addition to the light source of the liquid crystal backlight described above.
  • a liquid crystal control circuit that drives a liquid crystal element that controls transmission of light emitted from the light source of the backlight in the liquid crystal panel in addition to the light source of the liquid crystal backlight described above.
  • the problem to be solved is that the power consumption of the liquid crystal monitor cannot be sufficiently reduced only by the division control of the light source of the liquid crystal backlight.
  • the present invention provides a liquid crystal panel in which a liquid crystal element is arranged at each of intersections of a plurality of data lines and a plurality of scanning lines wired in a matrix, and a plurality of data line groups into which the plurality of data lines are divided.
  • a liquid crystal vertical direction control circuit for supplying image data to the data lines in the data line group, and each of the plurality of scanning line groups into which the plurality of scanning lines are divided.
  • a liquid crystal horizontal direction control circuit that drives scanning lines in a line group and writes pixel data of the data lines to the liquid crystal element; and the liquid crystal panel is provided in each of the liquid crystal panel blocks divided into a plurality of liquid crystal panels.
  • a light source block for irradiating the block with light.
  • the present invention operates the liquid crystal vertical direction control circuit that writes the pixel data to the data lines connected to the liquid crystal elements in the region where an image is displayed on the liquid crystal panel, and drives the scanning lines.
  • a liquid crystal control circuit that operates a direction control circuit, and a backlight control circuit that controls lighting of the light source block of the liquid crystal panel including a liquid crystal element in a region where an image is displayed on the liquid crystal panel. .
  • the present invention analyzes a video signal input inputted from the outside, and uses the number of pixels in the horizontal direction of the image displayed on the liquid crystal panel as the number of data lines to be driven and the number of pixels in the vertical direction as the number of scanning lines to be driven. And the number of the liquid crystal vertical direction control circuits corresponding to the number of data lines is operated, and a control signal for driving the number of liquid crystal horizontal direction control circuits corresponding to the number of operation lines is output to the liquid crystal control circuit. It further has a monitor control circuit that outputs the signal.
  • the number of the data lines in the liquid crystal panel block is the same as the number of the data lines controlled by the liquid crystal vertical direction control circuit, and the number of the scanning lines in the liquid crystal panel block and the liquid crystal horizontal direction are the same.
  • the number of scanning lines controlled by the control circuit is the same.
  • the present invention is a control method of a liquid crystal monitor having a liquid crystal panel in which liquid crystal elements are arranged at intersections of a plurality of data lines and a plurality of scanning lines wired in a matrix, wherein the liquid crystal vertical direction control circuit
  • a liquid crystal vertical control process for supplying image data to the data lines in each of the plurality of data line groups obtained by dividing the plurality of data lines, and a liquid crystal horizontal control circuit includes A liquid crystal horizontal direction control process that is provided in each of the plurality of scanning line groups into which the plurality of scanning lines are divided, drives the scanning lines in the scanning line group, and writes pixel data of the data lines to the liquid crystal element;
  • a backlight control circuit is provided in each of the liquid crystal panel blocks obtained by dividing the liquid crystal panel into a plurality of light source blocks that irradiate the liquid crystal panel block with light. And having a backlight control process of performing lighting control of.
  • the liquid crystal monitor of the present invention performs division control of the light source of the liquid crystal backlight and division control of the liquid crystal control circuit that controls the liquid crystal element in the liquid crystal panel, and therefore, compared with only the division control of the light source of the liquid crystal backlight. There is an advantage that the power consumption of the liquid crystal monitor can be further reduced.
  • the present invention divides the light source of the liquid crystal backlight into a plurality of light source blocks, performs division control of the light source of the liquid crystal backlight, and divides the liquid crystal panel into a plurality of liquid crystal panel blocks.
  • the power consumption of the entire liquid crystal monitor is reduced.
  • the liquid crystal block which irradiates light is matched with 1 to 1 for every light source block.
  • FIG. 1 is a block diagram showing a configuration example of a liquid crystal monitor according to an embodiment of the device of the present invention.
  • the liquid crystal monitor includes a video processing circuit 1, a liquid crystal control circuit 2, a monitor control unit 3, a backlight control circuit 4, a liquid crystal panel 5, liquid crystal vertical direction control circuits 21 to 24, liquid crystal horizontal direction control circuits 31 to 33, and a liquid crystal backlight.
  • liquid crystal panel 5 liquid crystal elements (N ⁇ M in the entire liquid crystal panel 5) are arranged at intersections of a plurality of data lines (N lines) and a plurality of scanning lines (M lines) wired in a matrix. In order to divide the liquid crystal element to be processed, it is divided into a plurality of liquid crystal panel blocks, for example, 12 liquid crystal panel blocks 41 to 52.
  • Each of the light source blocks 61 to 72 is provided in a one-to-one correspondence with the liquid crystal panel blocks 41 to 52, respectively. That is, the light source block 61 irradiates the liquid crystal panel block 41 with light.
  • the light source block 62 irradiates the liquid crystal panel block 42 with light.
  • the light source block 63 irradiates the liquid crystal panel block 43 with light.
  • the light source block 64 irradiates the liquid crystal panel block 44 with light.
  • the light source block 65 irradiates the liquid crystal panel block 45 with light.
  • the light source block 66 irradiates the liquid crystal panel block 46 with light.
  • the light source block 67 irradiates the liquid crystal panel block 47 with light.
  • the light source block 68 irradiates the liquid crystal panel block 48 with light.
  • the light source block 69 irradiates the liquid crystal panel block 49 with light.
  • the light source block 70 irradiates the liquid crystal panel block 50 with light.
  • the light source block 71 irradiates the liquid crystal panel block 51 with light.
  • the light source block 72 irradiates the liquid crystal panel block 52 with light.
  • the video processing circuit 1 converts a video signal input 100 supplied from the outside into gradation data and outputs the data to the liquid crystal control circuit 2 as a liquid crystal panel video signal 101. Further, the video processing circuit 1 displays an image input as the video signal input 100 by an image control signal (described later) supplied via the video processing circuit control signal line 104 connected to the monitor control unit 3. At this time, it has a function of enlarging and reducing an image to be displayed. For example, when enlarging an image, the video processing circuit 1 complements the pixels that need to be enlarged and displayed with surrounding pixels, and when reducing the image, the pixels of the image are set in advance. The thinning process is performed by.
  • the monitor control circuit 3 analyzes the video signal input 100 displayed on the liquid crystal panel 5 via the video processing circuit control signal line 104. That is, the monitor control circuit 3 extracts pixel information ([n, m] indicating n columns and m rows) of the video signal input 100. As an analysis result, the monitor control circuit 3 has a vertical control signal indicating which one of the liquid crystal vertical direction control circuits 21 to 24 is activated, and a horizontal control signal indicating which one of the liquid crystal horizontal direction control circuits 31 to 33 is activated. Is output to the liquid crystal control circuit 2 via the liquid crystal control circuit control signal line 106.
  • the monitor control unit 3 enlarges or reduces the image supplied as the video signal input 100 by several times by an enlargement / reduction control signal (including a magnification) supplied from a control line (not shown). Furthermore, either in the vertical direction (perpendicular to the scanning lines of the liquid crystal panel 5) or in the horizontal direction (parallel to the scanning lines of the liquid crystal panel 5), or both in the vertical and horizontal directions.
  • An image control signal indicating whether to enlarge or reduce is output to the video processing circuit 1.
  • the monitor control unit 3 calculates the number of pixels in the horizontal direction and the number of pixels in the vertical direction in the scaled image when the image is enlarged or reduced by multiplying the original image by a magnification or a scale factor.
  • the monitor control unit 3 indicates the number of pixels arranged in the horizontal direction of the scaled image (the area where the image of the liquid crystal panel 5 is displayed) after multiplying by the magnification or the scale factor, and indicates the number of columns of pixel information.
  • the number of columns is extracted as n (number of data lines), and the number of pixels arranged in the hydraulic direction is extracted as the number of rows m (number of scanning lines) indicating the number of rows of pixel information.
  • the monitor control unit 3 generates a column drive signal indicating that the liquid crystal vertical direction control circuit corresponding to the extracted column number n is driven, and drives the liquid crystal horizontal direction control circuit corresponding to the row number m.
  • a row driving signal indicating is generated.
  • each of the liquid crystal vertical direction control circuits 21, 22, 23, 24 corresponds to N / 4 columns of liquid crystal elements.
  • Gradation data is supplied to the data line. That is, the data lines in the liquid crystal panel 5 are divided into a plurality of data line blocks, and one data line block has N / 4 data lines.
  • Each of the liquid crystal vertical control circuits and the liquid crystal horizontal direction control circuits 31, 32, and 33 controls M / 3 scanning lines.
  • the liquid crystal vertical direction control circuit 21 controls the data lines from data line numbers 1 to N / 4, and the liquid crystal vertical direction control circuit 22 controls the data lines from data line numbers 1+ (N / 3) to N / 2.
  • the liquid crystal vertical direction control circuit 23 controls the data lines from the data line number 1+ (N / 2) to 3N / 4, and the liquid crystal vertical direction control circuit 24 controls the data line number 1+ (3N / 4) to N. Control the line.
  • the liquid crystal horizontal direction control circuit 31 drives and controls the scanning lines from scanning line numbers 1 to M / 3, and the liquid crystal horizontal direction control circuit 32 scans from scanning line numbers 1+ (M / 3) to 2M / 3.
  • the liquid crystal horizontal direction control circuit 33 drives and controls the scanning lines from the scanning line number 1+ (2M / 3) to M.
  • the scanning lines in the liquid crystal panel 5 are divided into a plurality of scanning line blocks, and one scanning line block has M / 3 scanning lines. Further, the number of data lines in the liquid crystal panel block is the same as the number of data lines controlled by the liquid crystal vertical control circuit, and the number of scanning lines in the liquid crystal panel block and the number of scanning lines controlled by the liquid crystal horizontal direction control circuit are the same. Are the same.
  • the monitor control unit 3 drives only the liquid crystal vertical direction control circuit 21 if the number of columns n is 1 ⁇ n ⁇ N / 4, and if (N / 4) + 1 ⁇ n ⁇ N / 2.
  • the liquid crystal vertical direction control circuits 21 and 22 are driven, and if (N / 2) + 1 ⁇ n ⁇ 3N / 4, the liquid crystal vertical direction control circuits 21, 22 and 23 are driven, and (3N / 4) + 1 ⁇ n ⁇ If N, a column drive signal indicating that the liquid crystal vertical direction control circuits 21, 22, 23 and 24 are driven is output to the liquid crystal control circuit 2.
  • the monitor control unit 3 drives only the liquid crystal horizontal direction control circuit 31 if the number of rows m is 1 ⁇ m ⁇ M / 3, and (M / 3) + 1 ⁇ m ⁇ 2M / 3. If there is, the liquid crystal horizontal direction control circuits 31 and 32 are driven, and if (2M / 3) + 1 ⁇ m ⁇ M, the row drive signal indicating that the liquid crystal horizontal direction control circuits 31, 32 and 33 are driven Output to circuit 2. Therefore, the monitor control circuit 3 outputs the column drive signal and the row drive signal to the liquid crystal control circuit 2 as the liquid crystal drive circuit control signal 105.
  • liquid crystal control circuit 2 When the liquid crystal control circuit 2 is supplied with the panel video signal from the video processing circuit 1 and the liquid crystal control circuit control signal 105 is supplied from the monitor control circuit 3, information on each pixel (gradation degree data) in the panel video signal. Is output as a liquid crystal vertical control signal 102 and a liquid crystal horizontal control signal 103 indicating which liquid crystal element of the liquid crystal panel 5 is to be written.
  • the liquid crystal control circuit 2 includes a column driving signal for driving the liquid crystal vertical direction control circuit in the liquid crystal control circuit control signal 105 supplied from the monitor control unit 3 among the liquid crystal vertical direction control circuits 21 to 24, and A liquid crystal vertical control signal 102 including gradation data to be supplied to the driven liquid crystal vertical direction control circuit is output to each of the liquid crystal vertical direction control circuits 21 to 24.
  • the column drive signal in the liquid crystal vertical control signal 102 includes vertical direction control circuit identification information for identifying each of the liquid crystal vertical direction control circuits 21 to 24.
  • Each of the liquid crystal vertical direction control circuits 21 to 24 is driven when its own vertical direction control circuit identification information is supplied, and each of the liquid crystal vertical direction control circuits 21 to 24 is connected to the liquid crystal panel 5 and writes data to the column direction liquid crystal elements.
  • the gradation data is output for each line.
  • the liquid crystal control circuit 2 includes a row driving signal for driving the liquid crystal horizontal direction control circuit indicated by the liquid crystal control circuit control signal 105 supplied from the monitor control unit 3 among the liquid crystal horizontal direction control circuits 31 to 33, and a level.
  • a liquid crystal horizontal control signal 103 including a row control signal indicating which gray scale data corresponding to which scanning line has been supplied is supplied to the liquid crystal vertical control circuit corresponding to all of the data lines for writing tone data.
  • the liquid crystal horizontal control signal 103 includes horizontal direction control circuit identification information for identifying each of the liquid crystal horizontal direction control circuits 31 to 33.
  • Each of the liquid crystal horizontal direction control circuits 31 to 33 is driven when its own horizontal direction control circuit identification information is supplied, and each of the rows of the liquid crystal elements in the row direction connected to the liquid crystal panel 5, That is, the scanning line corresponding to the row control signal indicating whether the scanning line is driven is driven.
  • the control is performed. The scanning line corresponding to the line number is driven.
  • the liquid crystal control circuit 2 drives the liquid crystal horizontal direction control circuit designated by the monitor control unit 3, the liquid crystal control circuit 2 supplies gradation data corresponding to the number of columns n to the liquid crystal vertical direction control circuit and drives it.
  • a row control signal for driving each scanning line corresponding to the number of rows m is output to the liquid crystal horizontal drive direction circuit.
  • the liquid crystal control circuit 2 sets the scan line corresponding to the row number n. In order to sequentially set the active state, gradation data to be displayed for each row is written into the liquid crystal elements arranged in the scanning line direction.
  • the liquid crystal control circuit 2 controls the liquid crystal control circuit 2 based on the liquid crystal control circuit control signal 105, and the liquid crystal vertical direction control corresponding to the number m of columns necessary for display among the liquid crystal vertical direction control circuits 21 to 24.
  • the gradation data is written in the circuit, and the liquid crystal horizontal direction control circuits 31 to 33 each drive the scanning line corresponding to the row control signal, and the gradation data is written in each liquid crystal element in the liquid crystal panel 5.
  • the monitor control unit 3 outputs a backlight control signal 105 indicating which of the light source blocks 61 to 72 is lit to the backlight control circuit 4 based on the pixel information of the video signal input 100. That is, the monitor control unit 3 controls which of the light source blocks 61 to 72 is lit based on the pixel information [n, m] of the video signal input 100.
  • the data line width of the columns of the light source blocks 61, 65 and 69 is 1 ⁇ n ⁇ N / 4. It corresponds to the number.
  • the data line width of the column of the light source blocks 62, 66 and 70 corresponds to the number of data lines of the column of the liquid crystal elements of 1+ (N / 4) ⁇ n ⁇ N / 2.
  • the data line width of the columns of the light source blocks 63, 67 and 71 corresponds to the number of data lines of the column of the liquid crystal elements of 1+ (N / 2) ⁇ n ⁇ 3N / 4.
  • the data line width of the columns of the light source blocks 64, 68 and 72 corresponds to the number of data lines of the column of the liquid crystal elements of 1+ (3N / 4) ⁇ n ⁇ N.
  • the scanning line width of the rows of the light source blocks 61, 62, 63 and 64 corresponds to the number of scanning lines of the row of the liquid crystal elements of 1 ⁇ m ⁇ M / 3.
  • the scanning line widths of the rows of the light source blocks 65, 66, 67, and 68 correspond to the number of scanning lines of the liquid crystal element row of 1+ (M / 3) ⁇ m ⁇ 2M / 3.
  • the scanning line widths of the rows of the light source blocks 69, 70, 71, and 72 correspond to the number of scanning lines of the row of liquid crystal elements of 1+ (2M / 3) ⁇ m ⁇ M.
  • the monitor control unit 3 includes the light source block corresponding to the range of the liquid crystal element column including the data lines 1 to n and the liquid crystal element including the scan line widths 1 to m in the pixel information [n, m].
  • the light source block corresponding to the range of the first row is extracted, and the light source block selected in both the range of the data lines 1 to n and the range of the scanning lines 1 to m is selected as the light source block to be lit.
  • the monitor control unit 3 uses the light source blocks 61, 65, 69, 62, 66, 70 as the column direction. 63, 67, and 71 are extracted, and light source blocks 61, 62, 63, and 64 are extracted as row arrangement directions. Then, the monitor control unit 3 selects the light source blocks 61, 62, and 63 extracted from both as light source blocks to be lit based on the pixel information [n, m].
  • the monitor control unit 3 outputs a backlight control signal 105 including information for lighting the light source block selected by the pixel information [n, m] to the backlight control circuit 4.
  • the backlight control circuit 4 turns on the light source block set in the backlight control signal 105 supplied from the monitor control unit 3.
  • ⁇ Operation Example 1 Displaying Video Signal of Pixel Information [N, M] on the Entire Surface of Liquid Crystal Panel—>
  • the video processing circuit 1 performs image processing for enlarging or reducing the image by an image control signal from the monitor control circuit 3.
  • the monitor control circuit 3 is supplied with the video signal input 100 similarly to the video processing circuit 1, and is also supplied with the enlargement / reduction control signal supplied together with the video signal input 100.
  • the enlargement / reduction control signal indicates enlargement, and “1 ⁇ ” is indicated as the magnification.
  • the monitor control circuit 3 outputs to the video processing circuit 1 an image control signal including the video signal input 100 enlarged and the magnification “1 ⁇ ” to the video processing circuit 1. To do. Further, the monitor control circuit 3 multiplies pixel information [N, M] by multiplying N by 1 in the pixel information [N, M] in order to expand the video signal input 100 of the pixel information [N, M] to “1 time”, and the number of columns N as a result. , And similarly, M is multiplied by 1 to extract the number of rows M.
  • the monitor control circuit 3 outputs the above-described column drive signal and row drive signal to the liquid crystal control circuit 2 as the liquid crystal control circuit control signal 105.
  • the monitor control circuit 3 outputs a backlight control signal 105 indicating that all of the light source blocks 61 to 72 are lit to drive all the light source blocks from the pixel information [N, M]. Output for.
  • the video processing circuit 1 outputs the video signal input 100 as the panel video signal 101 to the liquid crystal control circuit 2 without performing any enlargement or reduction by the image control signal supplied from the monitor control circuit 3.
  • liquid crystal control circuit control signal 105 supplied from the monitor control circuit 3 is supplied to the video control circuit 2, all of the liquid crystal vertical control circuits 21 to 24 to be driven are driven with respect to the liquid crystal vertical control circuits 21 to 24.
  • the vertical control circuit identification information is added, and the liquid crystal vertical control signal 102 is output as gradation data to be supplied to all the data lines of the liquid crystal vertical control circuits 21 to 24.
  • the video control circuit 2 outputs to the liquid crystal horizontal direction control circuits 31 to 33 a liquid crystal horizontal control signal 103 to which all the horizontal direction control circuit identification information of the liquid crystal horizontal direction control circuits 31 to 33 to be driven is added. To do.
  • the video control circuit 2 transmits a row control signal to the liquid crystal horizontal direction control circuits 31 to 33 each time gradation data is supplied to all the data lines in the horizontal panel 5, and activates the corresponding scanning lines. Then, the gradation data supplied to the data line is written into the liquid crystal element corresponding to the activated scanning line.
  • the backlight control circuit 4 detects that all the light source panels are turned on by the backlight control signal 105 supplied from the monitor control unit 3, and turns on all the light source panels 61 to 72.
  • ⁇ Operation Example 2 Displaying Video Signal of Pixel Information [N / 2, M] on the Entire Surface of Liquid Crystal Panel—>
  • the video processing circuit 1 performs image processing for enlarging or reducing an image by an image control signal from the monitor control circuit 3.
  • the monitor control circuit 3 is supplied with the video signal input 100 similarly to the video processing circuit 1, and is also supplied with the enlargement / reduction control signal supplied together with the video signal input 100.
  • the enlargement / reduction control signal indicates enlargement, and “2 ⁇ ” is indicated as the magnification in the horizontal direction (lateral direction).
  • the monitor control circuit 3 outputs the above-described column drive signal and row drive signal to the liquid crystal control circuit 2 as the liquid crystal control circuit control signal 105.
  • the monitor control circuit 3 outputs a backlight control signal 105 indicating that all of the light source blocks 61 to 72 are lit to drive all the light source blocks from the pixel information [N, M]. Output for.
  • the video processing circuit 1 performs video processing that doubles the pixel information [N / 2, M] in the horizontal direction in accordance with the image control signal supplied from the monitor control circuit 3, and inputs the video signal subjected to the video processing. 100 is output to the liquid crystal control circuit 2 as a panel video signal 101.
  • liquid crystal control circuit control signal 105 supplied from the monitor control circuit 3 is supplied to the video control circuit 2, all of the liquid crystal vertical control circuits 21 to 24 to be driven are driven with respect to the liquid crystal vertical control circuits 21 to 24.
  • the vertical control circuit identification information is added, and the liquid crystal vertical control signal 102 is output as gradation data to be supplied to all the data lines of the liquid crystal vertical control circuits 21 to 24.
  • the video control circuit 2 outputs to the liquid crystal horizontal direction control circuits 31 to 33 a liquid crystal horizontal control signal 103 to which all the horizontal direction control circuit identification information of the liquid crystal horizontal direction control circuits 31 to 33 to be driven is added. To do.
  • the video control circuit 2 transmits a row control signal to the liquid crystal horizontal direction control circuits 31 to 33 each time gradation data is supplied to all the data lines in the horizontal panel 5, and activates the corresponding scanning lines. Then, the gradation data supplied to the data line is written into the liquid crystal element corresponding to the activated scanning line.
  • the backlight control circuit 4 detects that all the light source blocks are turned on by the backlight control signal 105 supplied from the monitor control unit 3, and turns on all the light source blocks 61 to 72.
  • ⁇ Operation Example 3 Displaying Video Signal of Pixel Information [N / 2, M] on Half of Liquid Crystal Panel—>
  • the video processing circuit 1 performs image processing for enlarging or reducing an image by an image control signal from the monitor control circuit 3.
  • the monitor control circuit 3 is supplied with the video signal input 100 similarly to the video processing circuit 1, and is also supplied with the enlargement / reduction control signal supplied together with the video signal input 100.
  • the enlargement / reduction control signal indicates enlargement, and “1 ⁇ ” is indicated as the magnification.
  • the video processing circuit 1 outputs the video signal input 100 of the pixel information [N / 2, M] as it is to the liquid crystal control circuit 2 as the panel video signal 101 by the image control signal supplied from the monitor control circuit 3. .
  • liquid crystal control circuit control signal 105 supplied from the monitor control circuit 3 is supplied to the video control circuit 2, the vertical direction of the liquid crystal vertical direction control circuits 21 and 22 to drive the liquid crystal vertical direction control circuits 21 to 24.
  • the control circuit identification information is added, and the liquid crystal vertical control signal 102 is output as gradation data to be supplied to the data lines corresponding to the liquid crystal vertical direction control circuits 21 and 24.
  • the video control circuit 2 outputs to the liquid crystal horizontal direction control circuits 31 to 33 a liquid crystal horizontal control signal 103 to which all the horizontal direction control circuit identification information of the liquid crystal horizontal direction control circuits 31 to 33 to be driven is added. To do.
  • the video control circuit 2 transmits a row control signal to the liquid crystal horizontal direction control circuits 31 to 33 each time gradation data is supplied to all the data lines in the horizontal panel 5, and activates the corresponding scanning lines. Then, the gradation data supplied to the data line is written into the liquid crystal element corresponding to the activated scanning line.
  • the backlight control circuit 4 detects that the light source blocks 61, 62, 65, 66, 69, and 70 are turned on by the backlight control signal 105 supplied from the monitor control unit 3, and the light source blocks 61, 62 are detected. , 65, 66, 69 and 70 are turned on.
  • the light source block corresponding to only the area where the image is displayed on the liquid crystal panel 5 is turned on, the liquid crystal vertical direction control circuit corresponding to the displayed area is activated, and gradation data is supplied to the data lines. Then, the liquid crystal horizontal direction control circuit corresponding to the display area is activated to activate the scanning line for writing the gradation data of the data line to the liquid crystal element.
  • the lighting control of the light source block not only the lighting control of the light source block but also the gradation data writing process and the scanning line activation process for the data lines correspond to the area where the image is displayed on the liquid crystal panel 5.
  • the power consumption for driving the liquid crystal panel 5 is only for lighting control of the light source block. Compared to the above, it is possible to further reduce.

Abstract

A liquid crystal monitor according to the present invention is provided with a liquid crystal panel (5) which has liquid crystal elements arranged on each intersection point between a plurality of data lines (N) and a plurality of scanning lines (M), which are wired in matrix form; liquid crystal vertical direction control circuits (21, 22, 23, 24) which are provided in each of a plurality of data line groups into which a plurality of data lines are divided and supply image data to the data line in the data line group; liquid crystal horizontal direction control circuits (31, 32, 33) which are provided in each of a plurality of scanning line groups into which a plurality of scanning lines are divided and write the pixel data in the data line into a liquid crystal element by driving the scanning line in the scanning line group; and light source blocks (61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72) which are provided in each of a plurality of liquid crystal panel blocks (41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52) into which the liquid crystal panel is segmented and radiate light onto the liquid crystal panel blocks.

Description

[規則37.2に基づきISAが決定した発明の名称]　液晶モニタ、及び液晶モニタの制御方法[Name of invention determined by ISA based on Rule 37.2] LCD monitor and control method for LCD monitor
　本発明は、液晶モニタ（液晶ディスプレイ）に関する。 The present invention relates to a liquid crystal monitor (liquid crystal display).
　ノート型パーソナルコンピュータ等の携帯機器の表示装置に用いられる液晶モニタの低消費電力化の手法として、液晶バックライトの光源を複数のブロックに分割し、この分割したブロックごとに点灯タイミングまたは輝度変更を制御する手法が用いられている（例えば、特許文献１参照）。 As a technique for reducing the power consumption of LCD monitors used in display devices for portable devices such as notebook personal computers, the light source of the LCD backlight is divided into multiple blocks, and the lighting timing or brightness is changed for each of the divided blocks. A control method is used (see, for example, Patent Document 1).
　しかし、液晶モニタにおいて消費電力の大きな部分としては、上述した液晶のバックライトの光源の他に、液晶パネルにおけるバックライトの光源の放射する光の透過を制御する液晶素子の駆動を行う液晶制御回路がある。
　このため、液晶バックライトの光源を複数のブロックに分割して、これらのブロックの部分点灯、または輝度変更を行うことのみでは、十分な低消費電力化を行うことができず、バッテリ駆動の場合、大幅にバッテリの駆動時間を増加させることができないという欠点があった。 However, in the liquid crystal monitor, the power consumption part includes a liquid crystal control circuit that drives a liquid crystal element that controls transmission of light emitted from the light source of the backlight in the liquid crystal panel in addition to the light source of the liquid crystal backlight described above. There is.
For this reason, dividing the light source of the LCD backlight into a plurality of blocks and performing only partial lighting of these blocks or changing the brightness cannot achieve a sufficiently low power consumption. There was a drawback that the battery driving time could not be increased significantly.
特開２００５－２１０７０７号公報JP 2005-210707 A
　解決しようとする問題点は、液晶バックライトの光源の分割制御のみでは、十分な液晶モニタの低消費電力化が行えないという点である。 The problem to be solved is that the power consumption of the liquid crystal monitor cannot be sufficiently reduced only by the division control of the light source of the liquid crystal backlight.
　本発明は、マトリクス状に配線された複数のデータ線及び複数の走査線の交点の各々に液晶素子が配置された液晶パネルと、前記複数のデータ線が分割された複数のデータ線グループの各々に設けられ、当該データ線グループ内のデータ線に対し、画像のデータを供給する液晶垂直方向制御回路と、前記複数の走査線が分割された複数の走査線グループの各々に設けられ、当該走査線グループ内の走査線を駆動し、前記データ線の画素データを前記液晶素子に書き込む液晶水平方向制御回路と、前記液晶パネルが複数に分割された液晶パネルブロックの各々に設けられ、当該液晶パネルブロックに対して光を照射する光源ブロックとを備えることを特徴とする。 The present invention provides a liquid crystal panel in which a liquid crystal element is arranged at each of intersections of a plurality of data lines and a plurality of scanning lines wired in a matrix, and a plurality of data line groups into which the plurality of data lines are divided. A liquid crystal vertical direction control circuit for supplying image data to the data lines in the data line group, and each of the plurality of scanning line groups into which the plurality of scanning lines are divided. A liquid crystal horizontal direction control circuit that drives scanning lines in a line group and writes pixel data of the data lines to the liquid crystal element; and the liquid crystal panel is provided in each of the liquid crystal panel blocks divided into a plurality of liquid crystal panels. And a light source block for irradiating the block with light.
　本発明は、前記液晶パネルに画像が表示される領域の液晶素子に接続される前記データ線に前記画素データを書き込む前記液晶垂直方向制御回路を動作させ、また前記走査線を駆動する前記液晶水平方向制御回路を動作させる液晶制御回路と、前記液晶パネルに画像が表示される領域の液晶素子を含む前記液晶パネルの前記光源ブロックを点灯制御するバックライト制御回路とをさらに有することを特徴とする。 The present invention operates the liquid crystal vertical direction control circuit that writes the pixel data to the data lines connected to the liquid crystal elements in the region where an image is displayed on the liquid crystal panel, and drives the scanning lines. A liquid crystal control circuit that operates a direction control circuit, and a backlight control circuit that controls lighting of the light source block of the liquid crystal panel including a liquid crystal element in a region where an image is displayed on the liquid crystal panel. .
　本発明は、外部から入力される映像信号入力を解析し、液晶パネルに表示する画像の水平方向の画素数を、駆動するデータ線数として、また垂直方向の画素数を、駆動する走査線数として抽出し、前記データ線数に対応した数の前記液晶垂直方向制御回路を動作させ、前記操作線数に対応する数の前記液晶水平方向制御回路を駆動するための制御信号を前記液晶制御回路に出力するモニタ制御回路をさらに有することを特徴とする。 The present invention analyzes a video signal input inputted from the outside, and uses the number of pixels in the horizontal direction of the image displayed on the liquid crystal panel as the number of data lines to be driven and the number of pixels in the vertical direction as the number of scanning lines to be driven. And the number of the liquid crystal vertical direction control circuits corresponding to the number of data lines is operated, and a control signal for driving the number of liquid crystal horizontal direction control circuits corresponding to the number of operation lines is output to the liquid crystal control circuit. It further has a monitor control circuit that outputs the signal.
　本発明は、前記液晶パネルブロックにおける前記データ線の数と、前記液晶垂直方向制御回路の制御する前記データ線の数が同一であり、前記液晶パネルブロックにおける前記走査線の数と前記液晶水平方向制御回路の制御する走査線の数が同一であることを特徴とする。 In the present invention, the number of the data lines in the liquid crystal panel block is the same as the number of the data lines controlled by the liquid crystal vertical direction control circuit, and the number of the scanning lines in the liquid crystal panel block and the liquid crystal horizontal direction are the same. The number of scanning lines controlled by the control circuit is the same.
　本発明は、マトリクス状に配線された複数のデータ線及び複数の走査線の交点の各々に液晶素子が配置された液晶パネルを有する液晶モニタの制御方法であって、液晶垂直方向制御回路が前記複数のデータ線が分割された複数のデータ線グループの各々に設けられ、当該データ線グループ内のデータ線に対し、画像のデータを供給する液晶垂直方向制御過程と、液晶水平方向制御回路が前記複数の走査線が分割された複数の走査線グループの各々に設けられ、当該走査線グループ内の走査線を駆動し、前記データ線の画素データを前記液晶素子に書き込む液晶水平方向制御過程と、バックライト制御回路が前記液晶パネルが複数に分割された液晶パネルブロックの各々に設けられ、当該液晶パネルブロックに対して光を照射する光源ブロックの点灯制御を行うバックライト制御過程とを有することを特徴とする。 The present invention is a control method of a liquid crystal monitor having a liquid crystal panel in which liquid crystal elements are arranged at intersections of a plurality of data lines and a plurality of scanning lines wired in a matrix, wherein the liquid crystal vertical direction control circuit A liquid crystal vertical control process for supplying image data to the data lines in each of the plurality of data line groups obtained by dividing the plurality of data lines, and a liquid crystal horizontal control circuit includes A liquid crystal horizontal direction control process that is provided in each of the plurality of scanning line groups into which the plurality of scanning lines are divided, drives the scanning lines in the scanning line group, and writes pixel data of the data lines to the liquid crystal element; A backlight control circuit is provided in each of the liquid crystal panel blocks obtained by dividing the liquid crystal panel into a plurality of light source blocks that irradiate the liquid crystal panel block with light. And having a backlight control process of performing lighting control of.
　本発明の液晶モニタは、液晶バックライトの光源の分割制御と、液晶パネルにおける液晶素子の制御を行う液晶制御回路の分割制御とを行うため、液晶バックライトの光源の分割制御のみに比較して、より液晶モニタの低消費電力化が行えるという利点がある。 The liquid crystal monitor of the present invention performs division control of the light source of the liquid crystal backlight and division control of the liquid crystal control circuit that controls the liquid crystal element in the liquid crystal panel, and therefore, compared with only the division control of the light source of the liquid crystal backlight. There is an advantage that the power consumption of the liquid crystal monitor can be further reduced.
本実施形態による液晶モニタの構成を示す図である。It is a figure which shows the structure of the liquid crystal monitor by this embodiment.
　本発明は、液晶バックライトの光源を複数の光源ブロックに分割して、液晶バックライトの光源の分割制御を行い、かつ液晶パネルを複数の液晶パネルブロックに分割して、各液晶パネルブロックごとに液晶制御回路を設け、液晶パネルの分割制御を行うことにより、液晶モニタ全体の消費電力を低減している。また、光源ブロック毎に、光を照射する液晶ブロックが１対１に対応付けられている。 The present invention divides the light source of the liquid crystal backlight into a plurality of light source blocks, performs division control of the light source of the liquid crystal backlight, and divides the liquid crystal panel into a plurality of liquid crystal panel blocks. By providing a liquid crystal control circuit and performing division control of the liquid crystal panel, the power consumption of the entire liquid crystal monitor is reduced. Moreover, the liquid crystal block which irradiates light is matched with 1 to 1 for every light source block.
　図１は、本発明装置の一実施例による液晶モニタの構成例を示すブロック図である。 FIG. 1 is a block diagram showing a configuration example of a liquid crystal monitor according to an embodiment of the device of the present invention.
　液晶モニタは、映像処理回路１、液晶制御回路２、モニタ制御部３、バックライト制御回路４、液晶パネル５、液晶垂直方向制御回路２１から２４、液晶水平方向制御回路３１から３３、液晶バックライトの光源ブロック５１から７２から構成されている。
　液晶パネル５は、マトリクス状に配線された複数のデータ線（Ｎ本）と複数の走査線（Ｍ本）との交点に液晶素子（液晶パネル５全体でＮ×Ｍ個）が配置されており、処理対象の液晶素子を分割するため、複数の液晶パネルブロック、例えば液晶パネルブロック４１から５２の１２個に分割されている。 The liquid crystal monitor includes a video processing circuit 1, a liquid crystal control circuit 2, a monitor control unit 3, a backlight control circuit 4, a liquid crystal panel 5, liquid crystal vertical direction control circuits 21 to 24, liquid crystal horizontal direction control circuits 31 to 33, and a liquid crystal backlight. Light source blocks 51 to 72.
In the liquid crystal panel 5, liquid crystal elements (N × M in the entire liquid crystal panel 5) are arranged at intersections of a plurality of data lines (N lines) and a plurality of scanning lines (M lines) wired in a matrix. In order to divide the liquid crystal element to be processed, it is divided into a plurality of liquid crystal panel blocks, for example, 12 liquid crystal panel blocks 41 to 52.
　光源ブロック６１から７２の各々は、それぞれ液晶パネルブロック４１から５２に１対１に対応して設けられている。
　すなわち、光源ブロック６１は、液晶パネルブロック４１に対して光を照射する。また、光源ブロック６２は、液晶パネルブロック４２に対して光を照射する。光源ブロック６３は液晶パネルブロック４３に対して光を照射する。光源ブロック６４は、液晶パネルブロック４４に対して光を照射する。また、光源ブロック６５は、液晶パネルブロック４５に対して光を照射する。光源ブロック６６は液晶パネルブロック４６に対して光を照射する。光源ブロック６７は、液晶パネルブロック４７に対して光を照射する。また、光源ブロック６８は、液晶パネルブロック４８に対して光を照射する。光源ブロック６９は液晶パネルブロック４９に対して光を照射する。光源ブロック７０は、液晶パネルブロック５０に対して光を照射する。また、光源ブロック７１は、液晶パネルブロック５１に対して光を照射する。光源ブロック７２は液晶パネルブロック５２に対して光を照射する。 Each of the light source blocks 61 to 72 is provided in a one-to-one correspondence with the liquid crystal panel blocks 41 to 52, respectively.
That is, the light source block 61 irradiates the liquid crystal panel block 41 with light. The light source block 62 irradiates the liquid crystal panel block 42 with light. The light source block 63 irradiates the liquid crystal panel block 43 with light. The light source block 64 irradiates the liquid crystal panel block 44 with light. The light source block 65 irradiates the liquid crystal panel block 45 with light. The light source block 66 irradiates the liquid crystal panel block 46 with light. The light source block 67 irradiates the liquid crystal panel block 47 with light. The light source block 68 irradiates the liquid crystal panel block 48 with light. The light source block 69 irradiates the liquid crystal panel block 49 with light. The light source block 70 irradiates the liquid crystal panel block 50 with light. The light source block 71 irradiates the liquid crystal panel block 51 with light. The light source block 72 irradiates the liquid crystal panel block 52 with light.
　映像処理回路１は、外部から供給される映像信号入力１００を、階調度のデータに変換し、液晶パネル用映像信号１０１として液晶制御回路２へ出力する。
　また、映像処理回路１は、モニタ制御部３と接続されている映像処理回路制御信号線１０４を介して供給される画像制御信号（後述）により、映像信号入力１００として入力される画像を表示する際に、表示する画像の拡大及び縮小を行う機能を有している。映像処理回路１は、例えば、画像を拡大する際、画像を拡大して表示が必要となった画素を周囲の画素により補完し、画像を縮小する際、画像の画素を予め設定されているルールにより間引く処理を行う。 The video processing circuit 1 converts a video signal input 100 supplied from the outside into gradation data and outputs the data to the liquid crystal control circuit 2 as a liquid crystal panel video signal 101.
Further, the video processing circuit 1 displays an image input as the video signal input 100 by an image control signal (described later) supplied via the video processing circuit control signal line 104 connected to the monitor control unit 3. At this time, it has a function of enlarging and reducing an image to be displayed. For example, when enlarging an image, the video processing circuit 1 complements the pixels that need to be enlarged and displayed with surrounding pixels, and when reducing the image, the pixels of the image are set in advance. The thinning process is performed by.
　モニタ制御回路３は、映像処理回路制御信号線１０４を介して、液晶パネル５に表示する映像信号入力１００の解析を行う。すなわち、モニタ制御回路３は、映像信号入力１００の画素情報（ｎ列ｍ行を示す、[ｎ，ｍ]）を抽出する。モニタ制御回路３は、解析結果として、液晶垂直方向制御回路２１から２４のいずれを起動させるかの垂直制御信号と、液晶水平方向制御回路３１から３３のいずれを起動させるかを示す水平制御信号とを、液晶制御回路制御信号線１０６を介して液晶制御回路２へ出力する。 The monitor control circuit 3 analyzes the video signal input 100 displayed on the liquid crystal panel 5 via the video processing circuit control signal line 104. That is, the monitor control circuit 3 extracts pixel information ([n, m] indicating n columns and m rows) of the video signal input 100. As an analysis result, the monitor control circuit 3 has a vertical control signal indicating which one of the liquid crystal vertical direction control circuits 21 to 24 is activated, and a horizontal control signal indicating which one of the liquid crystal horizontal direction control circuits 31 to 33 is activated. Is output to the liquid crystal control circuit 2 via the liquid crystal control circuit control signal line 106.
　また、モニタ制御部３は、図示しない制御線から供給される拡大／縮小制御信号（倍率を含む）により、映像信号入力１００として供給される画像を何倍に拡大あるいは何分の一に縮小するか、さらに垂直方向（液晶パネル５の走査線に対して垂直方向）または水平方向（液晶パネル５の走査線に対して平行方向）のいずれか、あるい垂直方向及び水平方向の双方に対して拡大または縮小するかを示す画像制御信号を、映像処理回路１に対して出力する。
　また、モニタ制御部３は、画像を拡大あるいは縮小した場合のスケーリング画像における水平方向の画素数と垂直方向の画素数とを、元の画像に対して倍率または縮尺率を乗算して算出する。 Further, the monitor control unit 3 enlarges or reduces the image supplied as the video signal input 100 by several times by an enlargement / reduction control signal (including a magnification) supplied from a control line (not shown). Furthermore, either in the vertical direction (perpendicular to the scanning lines of the liquid crystal panel 5) or in the horizontal direction (parallel to the scanning lines of the liquid crystal panel 5), or both in the vertical and horizontal directions. An image control signal indicating whether to enlarge or reduce is output to the video processing circuit 1.
The monitor control unit 3 calculates the number of pixels in the horizontal direction and the number of pixels in the vertical direction in the scaled image when the image is enlarged or reduced by multiplying the original image by a magnification or a scale factor.
　そして、モニタ制御部３は、倍率または縮尺率を乗算した後におけるスケーリング画像（液晶パネル５の画像が表示される領域）の水平方向に配列した画素の数を、画素情報の列の数を示す列数ｎ（データ線数）として抽出し、また、水力方向に配列した画素の数を、画素情報の行の数を示す行数ｍ（走査線数）として抽出する。
　また、モニタ制御部３は、抽出した列数ｎに対応する液晶垂直方向制御回路を駆動させることを示す列駆動信号を生成し、また行数ｍに対応する液晶水平方向制御回路を駆動させることを示す行駆動信号を生成する。 Then, the monitor control unit 3 indicates the number of pixels arranged in the horizontal direction of the scaled image (the area where the image of the liquid crystal panel 5 is displayed) after multiplying by the magnification or the scale factor, and indicates the number of columns of pixel information. The number of columns is extracted as n (number of data lines), and the number of pixels arranged in the hydraulic direction is extracted as the number of rows m (number of scanning lines) indicating the number of rows of pixel information.
The monitor control unit 3 generates a column drive signal indicating that the liquid crystal vertical direction control circuit corresponding to the extracted column number n is driven, and drives the liquid crystal horizontal direction control circuit corresponding to the row number m. A row driving signal indicating is generated.
　すなわち、液晶パネル５において液晶素子がＮ列×Ｍ行で配列しているとすると、液晶垂直方向制御回路２１、２２、２３、２４の各々は、Ｎ／４ずつの液晶素子の列に対応するデータ線に対して階調データを供給することになる。すなわち、液晶パネル５におけるデータ線は複数のデータ線ブロックに分割されており、１つのデータ線ブロックがＮ／４本ずつのデータ線を有する。液晶垂直制御回路また、液晶水平方向制御回路３１、３２、３３の各々は、Ｍ／３ずつの走査線を制御することになる。 That is, assuming that liquid crystal elements are arranged in N columns × M rows in the liquid crystal panel 5, each of the liquid crystal vertical direction control circuits 21, 22, 23, 24 corresponds to N / 4 columns of liquid crystal elements. Gradation data is supplied to the data line. That is, the data lines in the liquid crystal panel 5 are divided into a plurality of data line blocks, and one data line block has N / 4 data lines. Each of the liquid crystal vertical control circuits and the liquid crystal horizontal direction control circuits 31, 32, and 33 controls M / 3 scanning lines.
　液晶垂直方向制御回路２１はデータ線番号１からＮ／４までのデータ線を制御し、液晶垂直方向制御回路２２はデータ線番号１＋（Ｎ／３）からＮ／２までのデータ線を制御し、液晶垂直方向制御回路２３はデータ線番号１＋（Ｎ／２）から３Ｎ／４までのデータ線を制御し、液晶垂直方向制御回路２４はデータ線番号１＋（３Ｎ／４）からＮまでのデータ線を制御する。
　また、液晶水平方向制御回路３１は走査線番号１からＭ／３までの走査線を駆動制御し、液晶水平方向制御回路３２は走査線番号１＋（Ｍ／３）から２Ｍ／３までの走査線を駆動制御し、液晶水平方向制御回路３３は走査線番号１＋（２Ｍ／３）からＭまでの走査線を駆動制御する。 The liquid crystal vertical direction control circuit 21 controls the data lines from data line numbers 1 to N / 4, and the liquid crystal vertical direction control circuit 22 controls the data lines from data line numbers 1+ (N / 3) to N / 2. The liquid crystal vertical direction control circuit 23 controls the data lines from the data line number 1+ (N / 2) to 3N / 4, and the liquid crystal vertical direction control circuit 24 controls the data line number 1+ (3N / 4) to N. Control the line.
Further, the liquid crystal horizontal direction control circuit 31 drives and controls the scanning lines from scanning line numbers 1 to M / 3, and the liquid crystal horizontal direction control circuit 32 scans from scanning line numbers 1+ (M / 3) to 2M / 3. The liquid crystal horizontal direction control circuit 33 drives and controls the scanning lines from the scanning line number 1+ (2M / 3) to M.
　すなわち、液晶パネル５における走査線は複数の走査線ブロックに分割されており、１つの走査線ブロックがＭ／３本ずつの走査線を有する。また、液晶パネルブロックにおけるデータ線の数と、液晶垂直方向制御回路の制御するデータ線の数が同一であり、液晶パネルブロックにおける走査線の数と液晶水平方向制御回路の制御する走査線の数が同一である。 That is, the scanning lines in the liquid crystal panel 5 are divided into a plurality of scanning line blocks, and one scanning line block has M / 3 scanning lines. Further, the number of data lines in the liquid crystal panel block is the same as the number of data lines controlled by the liquid crystal vertical control circuit, and the number of scanning lines in the liquid crystal panel block and the number of scanning lines controlled by the liquid crystal horizontal direction control circuit are the same. Are the same.
　この構成により、モニタ制御部３は、列数ｎが１≦ｎ≦Ｎ／４であれば液晶垂直方向制御回路２１のみを駆動させ、（Ｎ／４）＋１≦ｎ≦Ｎ／２であれば液晶垂直方向制御回路２１及び２２を駆動させ、（Ｎ／２）＋１≦ｎ≦３Ｎ／４であれば液晶垂直方向制御回路２１、２２及び２３を駆動させ、（３Ｎ／４）＋１≦ｎ≦Ｎであれば液晶垂直方向制御回路２１、２２、２３及び２４を駆動させることを示す列駆動信号を、液晶制御回路２へ出力する。 With this configuration, the monitor control unit 3 drives only the liquid crystal vertical direction control circuit 21 if the number of columns n is 1 ≦ n ≦ N / 4, and if (N / 4) + 1 ≦ n ≦ N / 2. The liquid crystal vertical direction control circuits 21 and 22 are driven, and if (N / 2) + 1 ≦ n ≦ 3N / 4, the liquid crystal vertical direction control circuits 21, 22 and 23 are driven, and (3N / 4) + 1 ≦ n ≦ If N, a column drive signal indicating that the liquid crystal vertical direction control circuits 21, 22, 23 and 24 are driven is output to the liquid crystal control circuit 2.
　また、同様に、モニタ制御部３は、行数ｍが、１≦ｍ≦Ｍ／３であれば液晶水平方向制御回路３１のみを駆動させ、（Ｍ／３）＋１≦ｍ≦２Ｍ／３であれば液晶水平方向制御回路３１及び３２を駆動させ、（２Ｍ／３）＋１≦ｍ≦Ｍであれば液晶水平方向制御回路３１、３２及び３３を駆動させることを示す行駆動信号を、液晶制御回路２へ出力する。したがって、モニタ制御回路３は、列駆動信号と行駆動信号とを、液晶駆動回路制御信号１０５として液晶制御回路２へ出力する。 Similarly, the monitor control unit 3 drives only the liquid crystal horizontal direction control circuit 31 if the number of rows m is 1 ≦ m ≦ M / 3, and (M / 3) + 1 ≦ m ≦ 2M / 3. If there is, the liquid crystal horizontal direction control circuits 31 and 32 are driven, and if (2M / 3) + 1 ≦ m ≦ M, the row drive signal indicating that the liquid crystal horizontal direction control circuits 31, 32 and 33 are driven Output to circuit 2. Therefore, the monitor control circuit 3 outputs the column drive signal and the row drive signal to the liquid crystal control circuit 2 as the liquid crystal drive circuit control signal 105.
　液晶制御回路２は、映像処理回路１からパネル用映像信号が供給され、モニタ制御回路３から液晶制御回路制御信号１０５が供給されると、パネル用映像信号における各画素の情報（階調度データ）を、液晶パネル５のいずれの液晶素子に書き込むかを示す液晶垂直制御信号１０２及び液晶水平制御信号１０３として出力する。 When the liquid crystal control circuit 2 is supplied with the panel video signal from the video processing circuit 1 and the liquid crystal control circuit control signal 105 is supplied from the monitor control circuit 3, information on each pixel (gradation degree data) in the panel video signal. Is output as a liquid crystal vertical control signal 102 and a liquid crystal horizontal control signal 103 indicating which liquid crystal element of the liquid crystal panel 5 is to be written.
　このとき、液晶制御回路２は、液晶垂直方向制御回路２１から２４の各々のうち、モニタ制御部３から供給される液晶制御回路制御信号１０５における液晶垂直方向制御回路を駆動させる列駆動信号と、駆動させた液晶垂直方向制御回路へ供給する階調データとを含む液晶垂直制御信号１０２を、液晶垂直方向制御回路２１から２４の各々へ出力する。 At this time, the liquid crystal control circuit 2 includes a column driving signal for driving the liquid crystal vertical direction control circuit in the liquid crystal control circuit control signal 105 supplied from the monitor control unit 3 among the liquid crystal vertical direction control circuits 21 to 24, and A liquid crystal vertical control signal 102 including gradation data to be supplied to the driven liquid crystal vertical direction control circuit is output to each of the liquid crystal vertical direction control circuits 21 to 24.
　また、液晶垂直制御信号１０２における列駆動信号は、液晶垂直方向制御回路２１から２４の各々を識別する垂直方向制御回路識別情報が含まれている。液晶垂直方向制御回路２１から２４の各々は、自身の垂直方向制御回路識別情報が供給された場合に駆動し、それぞれが液晶パネル５において接続されている、列方向の液晶素子にデータを書き込むデータ線毎に、階調度データを出力する。　　　 The column drive signal in the liquid crystal vertical control signal 102 includes vertical direction control circuit identification information for identifying each of the liquid crystal vertical direction control circuits 21 to 24. Each of the liquid crystal vertical direction control circuits 21 to 24 is driven when its own vertical direction control circuit identification information is supplied, and each of the liquid crystal vertical direction control circuits 21 to 24 is connected to the liquid crystal panel 5 and writes data to the column direction liquid crystal elements. The gradation data is output for each line. *
　同様に、液晶制御回路２は、液晶水平方向制御回路３１から３３のうち、モニタ制御部３から供給される液晶制御回路制御信号１０５の示す液晶水平方向制御回路を駆動させる行駆動信号と、階調データを書き込むデータ線の全てに対応した液晶垂直方向制御回路に対し、何番目の走査線に対応する階調データを供給したかを示す行制御信号とを含む液晶水平制御信号１０３が供給される。 Similarly, the liquid crystal control circuit 2 includes a row driving signal for driving the liquid crystal horizontal direction control circuit indicated by the liquid crystal control circuit control signal 105 supplied from the monitor control unit 3 among the liquid crystal horizontal direction control circuits 31 to 33, and a level. A liquid crystal horizontal control signal 103 including a row control signal indicating which gray scale data corresponding to which scanning line has been supplied is supplied to the liquid crystal vertical control circuit corresponding to all of the data lines for writing tone data. The
　また、液晶水平制御信号１０３は、液晶水平方向制御回路３１から３３の各々を識別する水平方向制御回路識別情報が含まれている。液晶水平方向制御回路３１から３３の各々は、自身の水平方向制御回路識別情報が供給された場合に駆動し、それぞれが液晶パネル５において接続されている、行方向の液晶素子のいずれの行、すなわち走査線を駆動するかを示す行制御信号に対応する走査線を駆動する。液晶水平制御回路３１から３３の各々は、液晶制御回路２から供給される行制御番号（すなわちこの番号が走査線番号を示す）に対応する走査線を自身が制御することを検出すると、その制御線番号に対応する走査線を駆動する。 Further, the liquid crystal horizontal control signal 103 includes horizontal direction control circuit identification information for identifying each of the liquid crystal horizontal direction control circuits 31 to 33. Each of the liquid crystal horizontal direction control circuits 31 to 33 is driven when its own horizontal direction control circuit identification information is supplied, and each of the rows of the liquid crystal elements in the row direction connected to the liquid crystal panel 5, That is, the scanning line corresponding to the row control signal indicating whether the scanning line is driven is driven. When each of the liquid crystal horizontal control circuits 31 to 33 detects that it controls the scanning line corresponding to the row control number (that is, this number indicates the scanning line number) supplied from the liquid crystal control circuit 2, the control is performed. The scanning line corresponding to the line number is driven.
　すなわち、液晶制御回路２は、モニタ制御部３が指定する液晶水平方向制御回路を駆動させた後、液晶垂直方向制御回路に対して列数ｎに対応する階調データを供給し、駆動させた液晶水平駆動方向回路に対して、行数ｍに対応した各々の走査線を駆動する行制御信号を出力する。液晶制御回路２は、列数ｎに対応するデータ線に出力する階調データを、列数ｍのデータ線それぞれに対応する液晶垂直方向制御回路へ供給する毎に、行数ｎの走査線を順次アクティブ状態とするため、走査線方向に配列された液晶素子に対して、行毎に表示する階調データを書き込む処理を行う。 That is, after the liquid crystal control circuit 2 drives the liquid crystal horizontal direction control circuit designated by the monitor control unit 3, the liquid crystal control circuit 2 supplies gradation data corresponding to the number of columns n to the liquid crystal vertical direction control circuit and drives it. A row control signal for driving each scanning line corresponding to the number of rows m is output to the liquid crystal horizontal drive direction circuit. Each time the liquid crystal control circuit 2 supplies the gradation data to be output to the data line corresponding to the column number n to the liquid crystal vertical direction control circuit corresponding to the data line corresponding to the column number m, the liquid crystal control circuit 2 sets the scan line corresponding to the row number n. In order to sequentially set the active state, gradation data to be displayed for each row is written into the liquid crystal elements arranged in the scanning line direction.
　これにより、液晶制御回路２は、液晶制御回路制御信号１０５に基づき、液晶制御回路２を制御し、液晶垂直方向制御回路２１から２４のうち表示に必要な列数ｍに対応する液晶垂直方向制御回路に階調データを書き込み、液晶水平方向制御回路３１から３３各々が行制御信号に対応した走査線を駆動し、液晶パネル５における液晶素子の各々に階調データを書き込む。 Accordingly, the liquid crystal control circuit 2 controls the liquid crystal control circuit 2 based on the liquid crystal control circuit control signal 105, and the liquid crystal vertical direction control corresponding to the number m of columns necessary for display among the liquid crystal vertical direction control circuits 21 to 24. The gradation data is written in the circuit, and the liquid crystal horizontal direction control circuits 31 to 33 each drive the scanning line corresponding to the row control signal, and the gradation data is written in each liquid crystal element in the liquid crystal panel 5.
　また、モニタ制御部３は、映像信号入力１００の画素情報により、光源ブロック６１から７２のいずれを点灯させるかを示すバックライト制御信号１０５を、バックライト制御回路４に対して出力する。
　すなわち、モニタ制御部３は、映像信号入力１００の画素情報［ｎ，ｍ］により、光源ブロック６１から７２のいずれを点灯させるかの制御を行う。 In addition, the monitor control unit 3 outputs a backlight control signal 105 indicating which of the light source blocks 61 to 72 is lit to the backlight control circuit 4 based on the pixel information of the video signal input 100.
That is, the monitor control unit 3 controls which of the light source blocks 61 to 72 is lit based on the pixel information [n, m] of the video signal input 100.
　ここで、光源ブロックと液晶パネルブロックとは１対１対応しているため、光源ブロック６１、６５及び６９の列のデータ線幅は、１≦ｎ≦Ｎ／４の液晶素子の列のデータ線数に対応している。光源ブロック６２、６６及び７０の列のデータ線幅は、１＋（Ｎ／４）≦ｎ≦Ｎ／２の液晶素子の列のデータ線数に対応している。光源ブロック６３、６７及び７１の列のデータ線幅は、１＋（Ｎ／２）≦ｎ≦３Ｎ／４の液晶素子の列のデータ線数に対応している。光源ブロック６４、６８及び７２の列のデータ線幅は、１＋（３Ｎ／４）≦ｎ≦Ｎの液晶素子の列のデータ線数に対応している。 Here, since the light source block and the liquid crystal panel block have a one-to-one correspondence, the data line width of the columns of the light source blocks 61, 65 and 69 is 1 ≦ n ≦ N / 4. It corresponds to the number. The data line width of the column of the light source blocks 62, 66 and 70 corresponds to the number of data lines of the column of the liquid crystal elements of 1+ (N / 4) ≦ n ≦ N / 2. The data line width of the columns of the light source blocks 63, 67 and 71 corresponds to the number of data lines of the column of the liquid crystal elements of 1+ (N / 2) ≦ n ≦ 3N / 4. The data line width of the columns of the light source blocks 64, 68 and 72 corresponds to the number of data lines of the column of the liquid crystal elements of 1+ (3N / 4) ≦ n ≦ N.
　また、光源ブロック６１、６２、６３及び６４の行の走査線幅は、１≦ｍ≦Ｍ／３の液晶素子の行の走査線数に対応している。光源ブロック６５、６６、６７及び６８の行の走査線幅は、１＋（Ｍ／３）≦ｍ≦２Ｍ／３の液晶素子の行の走査線数に対応している。光源ブロック６９、７０、７１及び７２の行の走査線幅は、１＋（２Ｍ／３）≦ｍ≦Ｍの液晶素子の行の走査線数に対応している。 Further, the scanning line width of the rows of the light source blocks 61, 62, 63 and 64 corresponds to the number of scanning lines of the row of the liquid crystal elements of 1 ≦ m ≦ M / 3. The scanning line widths of the rows of the light source blocks 65, 66, 67, and 68 correspond to the number of scanning lines of the liquid crystal element row of 1+ (M / 3) ≦ m ≦ 2M / 3. The scanning line widths of the rows of the light source blocks 69, 70, 71, and 72 correspond to the number of scanning lines of the row of liquid crystal elements of 1+ (2M / 3) ≦ m ≦ M.
　したがって、モニタ制御部３は、画素情報［ｎ，ｍ］において、データ線１からｎまでが含まれる液晶素子の列の範囲に対応する光源ブロックと、走査線幅１からｍが含まれる液晶素子の行の範囲に対応する光源ブロックとを抽出し、データ線１からｎの範囲と走査線１からｍの範囲との双方で選択された光源ブロックを点灯する光源ブロックとして選択する。 Therefore, the monitor control unit 3 includes the light source block corresponding to the range of the liquid crystal element column including the data lines 1 to n and the liquid crystal element including the scan line widths 1 to m in the pixel information [n, m]. The light source block corresponding to the range of the first row is extracted, and the light source block selected in both the range of the data lines 1 to n and the range of the scanning lines 1 to m is selected as the light source block to be lit.
　例えば、モニタ制御部３は、ｎ＝２＋（Ｎ／２）であり、かつｍ＝（Ｍ／３）－１の場合、列方向として、光源ブロック６１、６５、６９、６２、６６、７０、６３、６７及び７１を抽出し、行の配列方向として、光源ブロック６１、６２、６３及び６４を抽出する。そして、モニタ制御部３は、画素情報［ｎ，ｍ］により、双方ともに抽出された光源ブロック６１、６２及び６３を点灯する光源ブロックとして選択する。 For example, when n = 2 + (N / 2) and m = (M / 3) −1, the monitor control unit 3 uses the light source blocks 61, 65, 69, 62, 66, 70 as the column direction. 63, 67, and 71 are extracted, and light source blocks 61, 62, 63, and 64 are extracted as row arrangement directions. Then, the monitor control unit 3 selects the light source blocks 61, 62, and 63 extracted from both as light source blocks to be lit based on the pixel information [n, m].
　モニタ制御部３は、画素情報［ｎ，ｍ］により選択した光源ブロックを点灯させる情報を含むバックライト制御信号１０５をバックライト制御回路４に対して出力する。
　バックライト制御回路４は、モニタ制御部３から供給されるバックライト制御信号１０５に設定された光源ブロックを点灯させる。 The monitor control unit 3 outputs a backlight control signal 105 including information for lighting the light source block selected by the pixel information [n, m] to the backlight control circuit 4.
The backlight control circuit 4 turns on the light source block set in the backlight control signal 105 supplied from the monitor control unit 3.
＜動作例１―画素情報［Ｎ，Ｍ］の映像信号を液晶パネルの全面に表示する―＞
　映像処理回路１は、外部機器から映像信号入力１００（画素情報［N，M］）が供給されると、モニタ制御回路３からの画像制御信号により、画像の拡大または縮小の画像処理を行う。このとき、モニタ制御回路３は、映像処理回路１と同様に映像信号入力１００が供給され、この映像信号入力１００とともに供給される拡大／縮小制御信号も供給される。ここで、拡大／縮小制御信号は、拡大を示し、倍率として「１倍」が示されている。 <Operation Example 1—Displaying Video Signal of Pixel Information [N, M] on the Entire Surface of Liquid Crystal Panel—>
When the video signal input 100 (pixel information [N, M]) is supplied from an external device, the video processing circuit 1 performs image processing for enlarging or reducing the image by an image control signal from the monitor control circuit 3. At this time, the monitor control circuit 3 is supplied with the video signal input 100 similarly to the video processing circuit 1, and is also supplied with the enlargement / reduction control signal supplied together with the video signal input 100. Here, the enlargement / reduction control signal indicates enlargement, and “1 ×” is indicated as the magnification.
　したがって、モニタ制御回路３は、映像処理回路１に対して、映像信号入力１００を拡大することと、この拡大する倍率「１倍」とを含む画像制御信号を、映像処理回路１に対して出力する。
　また、モニタ制御回路３は、画素情報［Ｎ，Ｍの映像信号入力１００を「１倍」に拡大するため、画素情報［Ｎ，Ｍ］においてＮに１を乗算し、結果である列数Nを抽出し、同様にＭに１を乗算し、行数Mを抽出する。 Therefore, the monitor control circuit 3 outputs to the video processing circuit 1 an image control signal including the video signal input 100 enlarged and the magnification “1 ×” to the video processing circuit 1. To do.
Further, the monitor control circuit 3 multiplies pixel information [N, M] by multiplying N by 1 in the pixel information [N, M] in order to expand the video signal input 100 of the pixel information [N, M] to “1 time”, and the number of columns N as a result. , And similarly, M is multiplied by 1 to extract the number of rows M.
　そして、モニタ制御回路３は、列数ｎ＝Ｎであるため、液晶垂直方向制御回路２１、２２、２３、２４の全てを駆動させることを示す列駆動信号を生成する。同様に、モニタ制御回路３は、行数ｍ＝Ｍであるため、液晶垂直方向制御回路３１、３２、３３の全てを駆動させることを示す行駆動信号を生成する。モニタ制御回路３は、上述した列駆動信号及び行駆動信号を液晶制御回路制御信号１０５として、液晶制御回路２へ出力する。また、モニタ制御回路３は、画素情報［Ｎ，Ｍ］から全ての光源ブロックを駆動するため、光源ブロック６１から７２の全てを点灯することを示すバックライト制御信号１０５を、バックライト制御回路４に対して出力する。 The monitor control circuit 3 generates a column drive signal indicating that all of the liquid crystal vertical direction control circuits 21, 22, 23, 24 are driven because the number of columns n = N. Similarly, the monitor control circuit 3 generates a row drive signal indicating that all the liquid crystal vertical direction control circuits 31, 32, and 33 are driven because the number of rows m = M. The monitor control circuit 3 outputs the above-described column drive signal and row drive signal to the liquid crystal control circuit 2 as the liquid crystal control circuit control signal 105. The monitor control circuit 3 outputs a backlight control signal 105 indicating that all of the light source blocks 61 to 72 are lit to drive all the light source blocks from the pixel information [N, M]. Output for.
　映像処理回路１は、モニタ制御回路３から供給される画像制御信号により、拡大及び縮小のいずれも行わず、映像信号入力１００をパネル用映像信号１０１として、液晶制御回路２へ出力する。 The video processing circuit 1 outputs the video signal input 100 as the panel video signal 101 to the liquid crystal control circuit 2 without performing any enlargement or reduction by the image control signal supplied from the monitor control circuit 3.
　映像制御回路２は、モニタ制御回路３から供給される液晶制御回路制御信号１０５が供給されると、液晶垂直方向制御回路２１から２４に対し、駆動させる液晶垂直方向制御回路２１から２４の全ての垂直方向制御回路識別情報を付加し、液晶垂直方向制御回路２１から２４の全てのデータ線に供給する階調データとして、液晶垂直制御信号１０２を出力する。    When the liquid crystal control circuit control signal 105 supplied from the monitor control circuit 3 is supplied to the video control circuit 2, all of the liquid crystal vertical control circuits 21 to 24 to be driven are driven with respect to the liquid crystal vertical control circuits 21 to 24. The vertical control circuit identification information is added, and the liquid crystal vertical control signal 102 is output as gradation data to be supplied to all the data lines of the liquid crystal vertical control circuits 21 to 24.
　同様に、映像制御回路２は、液晶水平方向制御回路３１から３３に対し、駆動させる液晶水平方向制御回路３１から３３の全ての水平方向制御回路識別情報が付加された液晶水平制御信号１０３を出力する。
　そして、映像制御回路２は、水平パネル５における全てのデータ線に階調データを供給する毎に、液晶水平方向制御回路３１から３３に対して行制御信号を送信し、対応する走査線を活性化して、活性化された走査線に対応する液晶素子に対し、データ線に供給された階調データを書き込む。 Similarly, the video control circuit 2 outputs to the liquid crystal horizontal direction control circuits 31 to 33 a liquid crystal horizontal control signal 103 to which all the horizontal direction control circuit identification information of the liquid crystal horizontal direction control circuits 31 to 33 to be driven is added. To do.
The video control circuit 2 transmits a row control signal to the liquid crystal horizontal direction control circuits 31 to 33 each time gradation data is supplied to all the data lines in the horizontal panel 5, and activates the corresponding scanning lines. Then, the gradation data supplied to the data line is written into the liquid crystal element corresponding to the activated scanning line.
　また、バックライト制御回路４は、モニタ制御部３から供給されるバックライト制御信号１０５により、全ての光源パネルを点灯させることを検出し、光源パネル６１から７２の全てを点灯させる。 Further, the backlight control circuit 4 detects that all the light source panels are turned on by the backlight control signal 105 supplied from the monitor control unit 3, and turns on all the light source panels 61 to 72.
＜動作例２―画素情報［Ｎ／２，Ｍ］の映像信号を液晶パネルの全面に表示する―＞
　映像処理回路１は、外部機器から映像信号入力１００（画素情報［N／２，M］）が供給されると、モニタ制御回路３からの画像制御信号により、画像の拡大または縮小の画像処理を行う。このとき、モニタ制御回路３は、映像処理回路１と同様に映像信号入力１００が供給され、この映像信号入力１００とともに供給される拡大／縮小制御信号も供給される。ここで、拡大／縮小制御信号は、拡大を示し、倍率として水平方向（横方向）に「２倍」が示されている。 <Operation Example 2—Displaying Video Signal of Pixel Information [N / 2, M] on the Entire Surface of Liquid Crystal Panel—>
When a video signal input 100 (pixel information [N / 2, M]) is supplied from an external device, the video processing circuit 1 performs image processing for enlarging or reducing an image by an image control signal from the monitor control circuit 3. Do. At this time, the monitor control circuit 3 is supplied with the video signal input 100 similarly to the video processing circuit 1, and is also supplied with the enlargement / reduction control signal supplied together with the video signal input 100. Here, the enlargement / reduction control signal indicates enlargement, and “2 ×” is indicated as the magnification in the horizontal direction (lateral direction).
　したがって、モニタ制御回路３は、映像処理回路１に対して、映像信号入力１００水平方向に拡大することと、この拡大する倍率「２倍」とを含む画像制御信号を、映像処理回路１に対して出力する。
　また、モニタ制御回路３は、画素情報［Ｎ／２，Ｍ］の映像信号入力１００を水平方向に「２倍」に拡大するため、画素情報［Ｎ／２，Ｍ］において「Ｎ／２」に２を乗算し、演算結果である列数N（＝ｎ）を抽出し、同様にＭに１を乗算し、行数M（＝ｍ）を抽出する。 Therefore, the monitor control circuit 3 sends to the video processing circuit 1 an image control signal including the horizontal expansion of the video signal input 100 and the magnification “2 times” to the video processing circuit 1. Output.
Further, since the monitor control circuit 3 enlarges the video signal input 100 of the pixel information [N / 2, M] to “2 times” in the horizontal direction, “N / 2” in the pixel information [N / 2, M]. Is multiplied by 2 to extract the number of columns N (= n) as a result of the operation, and similarly, M is multiplied by 1 to extract the number of rows M (= m).
　そして、モニタ制御回路３は、列数ｎ＝Ｎであるため、液晶垂直方向制御回路２１、２２、２３、２４の全てを駆動させることを示す列駆動信号を生成する。同様に、モニタ制御回路３は、行数ｍ＝Ｍであるため、液晶垂直方向制御回路３１、３２、３３の全てを駆動させることを示す行駆動信号を生成する。モニタ制御回路３は、上述した列駆動信号及び行駆動信号を液晶制御回路制御信号１０５として、液晶制御回路２へ出力する。また、モニタ制御回路３は、画素情報［Ｎ，Ｍ］から全ての光源ブロックを駆動するため、光源ブロック６１から７２の全てを点灯することを示すバックライト制御信号１０５を、バックライト制御回路４に対して出力する。 The monitor control circuit 3 generates a column drive signal indicating that all of the liquid crystal vertical direction control circuits 21, 22, 23, 24 are driven because the number of columns n = N. Similarly, the monitor control circuit 3 generates a row drive signal indicating that all the liquid crystal vertical direction control circuits 31, 32, and 33 are driven because the number of rows m = M. The monitor control circuit 3 outputs the above-described column drive signal and row drive signal to the liquid crystal control circuit 2 as the liquid crystal control circuit control signal 105. The monitor control circuit 3 outputs a backlight control signal 105 indicating that all of the light source blocks 61 to 72 are lit to drive all the light source blocks from the pixel information [N, M]. Output for.
　映像処理回路１は、モニタ制御回路３から供給される画像制御信号により、画素情報［Ｎ／２，Ｍ］を、水平方向に２倍に拡大する映像処理を行い、映像処理された映像信号入力１００をパネル用映像信号１０１として、液晶制御回路２へ出力する。 The video processing circuit 1 performs video processing that doubles the pixel information [N / 2, M] in the horizontal direction in accordance with the image control signal supplied from the monitor control circuit 3, and inputs the video signal subjected to the video processing. 100 is output to the liquid crystal control circuit 2 as a panel video signal 101.
　映像制御回路２は、モニタ制御回路３から供給される液晶制御回路制御信号１０５が供給されると、液晶垂直方向制御回路２１から２４に対し、駆動させる液晶垂直方向制御回路２１から２４の全ての垂直方向制御回路識別情報を付加し、液晶垂直方向制御回路２１から２４の全てのデータ線に供給する階調データとして、液晶垂直制御信号１０２を出力する。    When the liquid crystal control circuit control signal 105 supplied from the monitor control circuit 3 is supplied to the video control circuit 2, all of the liquid crystal vertical control circuits 21 to 24 to be driven are driven with respect to the liquid crystal vertical control circuits 21 to 24. The vertical control circuit identification information is added, and the liquid crystal vertical control signal 102 is output as gradation data to be supplied to all the data lines of the liquid crystal vertical control circuits 21 to 24.
　同様に、映像制御回路２は、液晶水平方向制御回路３１から３３に対し、駆動させる液晶水平方向制御回路３１から３３の全ての水平方向制御回路識別情報が付加された液晶水平制御信号１０３を出力する。
　そして、映像制御回路２は、水平パネル５における全てのデータ線に階調データを供給する毎に、液晶水平方向制御回路３１から３３に対して行制御信号を送信し、対応する走査線を活性化して、活性化された走査線に対応する液晶素子に対し、データ線に供給された階調データを書き込む。 Similarly, the video control circuit 2 outputs to the liquid crystal horizontal direction control circuits 31 to 33 a liquid crystal horizontal control signal 103 to which all the horizontal direction control circuit identification information of the liquid crystal horizontal direction control circuits 31 to 33 to be driven is added. To do.
The video control circuit 2 transmits a row control signal to the liquid crystal horizontal direction control circuits 31 to 33 each time gradation data is supplied to all the data lines in the horizontal panel 5, and activates the corresponding scanning lines. Then, the gradation data supplied to the data line is written into the liquid crystal element corresponding to the activated scanning line.
　また、バックライト制御回路４は、モニタ制御部３から供給されるバックライト制御信号１０５により、全ての光源ブロックを点灯させることを検出し、光源ブロック６１から７２の全てを点灯させる。 Further, the backlight control circuit 4 detects that all the light source blocks are turned on by the backlight control signal 105 supplied from the monitor control unit 3, and turns on all the light source blocks 61 to 72.
＜動作例３―画素情報［Ｎ／２，Ｍ］の映像信号を液晶パネルの半分に表示する―＞
　映像処理回路１は、外部機器から映像信号入力１００（画素情報［N／２，M］）が供給されると、モニタ制御回路３からの画像制御信号により、画像の拡大または縮小の画像処理を行う。このとき、モニタ制御回路３は、映像処理回路１と同様に映像信号入力１００が供給され、この映像信号入力１００とともに供給される拡大／縮小制御信号も供給される。ここで、拡大／縮小制御信号は、拡大を示し、倍率としてに「１倍」が示されている。 <Operation Example 3—Displaying Video Signal of Pixel Information [N / 2, M] on Half of Liquid Crystal Panel—>
When a video signal input 100 (pixel information [N / 2, M]) is supplied from an external device, the video processing circuit 1 performs image processing for enlarging or reducing an image by an image control signal from the monitor control circuit 3. Do. At this time, the monitor control circuit 3 is supplied with the video signal input 100 similarly to the video processing circuit 1, and is also supplied with the enlargement / reduction control signal supplied together with the video signal input 100. Here, the enlargement / reduction control signal indicates enlargement, and “1 ×” is indicated as the magnification.
　したがって、モニタ制御回路３は、映像処理回路１に対して、映像信号入力１００に拡大することと、この拡大する倍率「１倍」とを含む画像制御信号を、映像処理回路１に対して出力する。
　また、モニタ制御回路３は、画素情報［Ｎ／２，Ｍ］の映像信号入力１００を「１倍」に拡大するため、画素情報［Ｎ／２，Ｍ］において「Ｎ／２」に１を乗算し、演算結果である列数Ｎ／２（＝ｎ）を抽出し、同様にＭに１を乗算し、行数Ｍ（＝ｍ）を抽出する。 Therefore, the monitor control circuit 3 outputs to the video processing circuit 1 an image control signal that includes the video signal input 100 that is enlarged to the video signal input 100 and the magnification “1 ×”. To do.
Further, the monitor control circuit 3 enlarges the video signal input 100 of the pixel information [N / 2, M] to “1 time”, so that “N / 2” is set to 1 in the pixel information [N / 2, M]. Multiplication is performed to extract the column number N / 2 (= n) as the operation result, and M is multiplied by 1 to extract the row number M (= m).
　そして、モニタ制御回路３は、列数ｎ＝Ｎ／２であるため、液晶垂直方向制御回路２１、２２、２３、２４における液晶垂直方向制御回路２１及び２２を駆動させることを示す列駆動信号を生成する。同様に、モニタ制御回路３は、行数ｍ＝Ｍであるため、液晶垂直方向制御回路３１、３２、３３の全てを駆動させることを示す行駆動信号を生成する。モニタ制御回路３は、上述した列駆動信号及び行駆動信号を液晶制御回路制御信号１０５として、液晶制御回路２へ出力する。また、モニタ制御回路３は、画素情報［Ｎ／２，Ｍ］から、光源ブロック６１から７２のうち、光源ブロック６１、６２、６５、６６、６９、７０を駆動するため、光源ブロック６１、６２、６５、６６、６９、７０を点灯することを示すバックライト制御信号１０５を、バックライト制御回路４に対して出力する。 The monitor control circuit 3 has a column drive signal indicating that the liquid crystal vertical direction control circuits 21 and 22 in the liquid crystal vertical direction control circuits 21, 22, 23, and 24 are driven because the number of columns n = N / 2. Generate. Similarly, the monitor control circuit 3 generates a row drive signal indicating that all the liquid crystal vertical direction control circuits 31, 32, and 33 are driven because the number of rows m = M. The monitor control circuit 3 outputs the above-described column drive signal and row drive signal to the liquid crystal control circuit 2 as the liquid crystal control circuit control signal 105. Further, the monitor control circuit 3 drives the light source blocks 61, 62, 65, 66, 69, and 70 among the light source blocks 61 to 72 from the pixel information [N / 2, M]. , 65, 66, 69, and 70 are output to the backlight control circuit 4.
　映像処理回路１は、モニタ制御回路３から供給される画像制御信号により、画素情報［Ｎ／２，Ｍ］の映像信号入力１００を、そのままパネル用映像信号１０１として、液晶制御回路２へ出力する。 The video processing circuit 1 outputs the video signal input 100 of the pixel information [N / 2, M] as it is to the liquid crystal control circuit 2 as the panel video signal 101 by the image control signal supplied from the monitor control circuit 3. .
　映像制御回路２は、モニタ制御回路３から供給される液晶制御回路制御信号１０５が供給されると、液晶垂直方向制御回路２１から２４に対し、駆動させる液晶垂直方向制御回路２１及び２２の垂直方向制御回路識別情報を付加し、液晶垂直方向制御回路２１及び２４に対応するデータ線に供給する階調データとして、液晶垂直制御信号１０２を出力する。        When the liquid crystal control circuit control signal 105 supplied from the monitor control circuit 3 is supplied to the video control circuit 2, the vertical direction of the liquid crystal vertical direction control circuits 21 and 22 to drive the liquid crystal vertical direction control circuits 21 to 24. The control circuit identification information is added, and the liquid crystal vertical control signal 102 is output as gradation data to be supplied to the data lines corresponding to the liquid crystal vertical direction control circuits 21 and 24.
　同様に、映像制御回路２は、液晶水平方向制御回路３１から３３に対し、駆動させる液晶水平方向制御回路３１から３３の全ての水平方向制御回路識別情報が付加された液晶水平制御信号１０３を出力する。
　そして、映像制御回路２は、水平パネル５における全てのデータ線に階調データを供給する毎に、液晶水平方向制御回路３１から３３に対して行制御信号を送信し、対応する走査線を活性化して、活性化された走査線に対応する液晶素子に対し、データ線に供給された階調データを書き込む。 Similarly, the video control circuit 2 outputs to the liquid crystal horizontal direction control circuits 31 to 33 a liquid crystal horizontal control signal 103 to which all the horizontal direction control circuit identification information of the liquid crystal horizontal direction control circuits 31 to 33 to be driven is added. To do.
The video control circuit 2 transmits a row control signal to the liquid crystal horizontal direction control circuits 31 to 33 each time gradation data is supplied to all the data lines in the horizontal panel 5, and activates the corresponding scanning lines. Then, the gradation data supplied to the data line is written into the liquid crystal element corresponding to the activated scanning line.
　また、バックライト制御回路４は、モニタ制御部３から供給されるバックライト制御信号１０５により、光源ブロック６１、６２、６５、６６、６９、７０を点灯させることを検出し、光源ブロック６１、６２、６５、６６、６９、７０を点灯させる。
　本実施形態は、液晶パネル５における画像が表示される領域のみに対応する光源ブロックを点灯させ、表示される領域に対応する液晶垂直方向制御回路を起動させてデータ線に階調データを供給し、表示される領域に対応した液晶水平方向制御回路を起動させて、データ線の階調データを液晶素子に書き込む走査線を活性化する。 Further, the backlight control circuit 4 detects that the light source blocks 61, 62, 65, 66, 69, and 70 are turned on by the backlight control signal 105 supplied from the monitor control unit 3, and the light source blocks 61, 62 are detected. , 65, 66, 69 and 70 are turned on.
In the present embodiment, the light source block corresponding to only the area where the image is displayed on the liquid crystal panel 5 is turned on, the liquid crystal vertical direction control circuit corresponding to the displayed area is activated, and gradation data is supplied to the data lines. Then, the liquid crystal horizontal direction control circuit corresponding to the display area is activated to activate the scanning line for writing the gradation data of the data line to the liquid crystal element.
　このため、本実施形態によれば、光源ブロックの点灯制御のみでなく、データ線に対する階調データの書き込み処理及び走査線の活性化処理を、液晶パネル５において画像が表示される領域に対応し、起動させる液晶垂直方向制御回路及び液晶水平方向制御回路を制御し、不必要な回路を動作させない制御を行うため、液晶パネル５を駆動するための消費電力を、光源ブロックの点灯制御のみの場合に比較し、より低減させることが可能となる。 For this reason, according to the present embodiment, not only the lighting control of the light source block but also the gradation data writing process and the scanning line activation process for the data lines correspond to the area where the image is displayed on the liquid crystal panel 5. In order to control the liquid crystal vertical direction control circuit and the liquid crystal horizontal direction control circuit to be activated and to control the operation of unnecessary circuits, the power consumption for driving the liquid crystal panel 5 is only for lighting control of the light source block. Compared to the above, it is possible to further reduce.
　また、この動作例３の場合、液晶パネル５の半分のデータ線に階調データを供給するため、階調データを供給するデータ線の数が、全画面表示（全データ線）の場合の１／２となるため、データ線当たりに階調データを供給する時間を倍としても、全画面表示の場合と同様の時間で、全データ線に対して階調データを供給することができる。したがって、液晶パネル５のデータ線への階調データの供給を低周波数化して、消費電流を低減することができる。 In the case of this operation example 3, since gradation data is supplied to half of the data lines of the liquid crystal panel 5, the number of data lines supplying gradation data is 1 in the case of full screen display (all data lines). Therefore, even if the time for supplying gradation data per data line is doubled, gradation data can be supplied to all data lines in the same time as in the case of full screen display. Therefore, the supply of gradation data to the data lines of the liquid crystal panel 5 can be reduced in frequency, and current consumption can be reduced.
　１　　映像処理回路
　２　　液晶制御回路
　３　　モニタ制御回路
　４　　バックライト制御回路
　５　　液晶パネル
　２２，２３，２４，２５　　液晶垂直方向制御回路
　３１，３２，３３　　液晶水平方向制御回路
　４１，４２，４３，４４，４５，４６，４７，４８，４９，５０，５１，５２　　液晶パネルブロック
　６１，６２，６３，６４，６５，６６，６７，６８，６９，７０，７１，７２　　光源ブロック DESCRIPTION OF SYMBOLS 1 Image processing circuit 2 Liquid crystal control circuit 3 Monitor control circuit 4 Backlight control circuit 5 Liquid crystal panel 22,23,24,25 Liquid crystal vertical direction control circuit 31,32,33 Liquid crystal horizontal direction control circuit 41,42,43,44, 45, 46, 47, 48, 49, 50, 51, 52 Liquid crystal panel block 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72 Light source block

Claims (5)

  1. 　マトリクス状に配線された複数のデータ線及び複数の走査線の交点の各々に液晶素子が配置された液晶パネルと、
    　前記複数のデータ線が分割された複数のデータ線グループの各々に設けられ、当該データ線グループ内のデータ線に対し、画像のデータを供給する液晶垂直方向制御回路と、
    　前記複数の走査線が分割された複数の走査線グループの各々に設けられ、当該走査線グループ内の走査線を駆動し、前記データ線の画素データを前記液晶素子に書き込む液晶水平方向制御回路と、
    　前記液晶パネルが複数に分割された液晶パネルブロックの各々に設けられ、当該液晶パネルブロックに対して光を照射する光源ブロックと
    　を備えることを特徴とする液晶モニタ。     A liquid crystal panel in which a liquid crystal element is disposed at each of intersections of a plurality of data lines and a plurality of scanning lines wired in a matrix;
    A liquid crystal vertical direction control circuit that is provided in each of a plurality of data line groups obtained by dividing the plurality of data lines and supplies image data to the data lines in the data line group;
    A liquid crystal horizontal direction control circuit provided in each of the plurality of scanning line groups into which the plurality of scanning lines are divided, driving the scanning lines in the scanning line group, and writing pixel data of the data lines into the liquid crystal element; ,
    A liquid crystal monitor, comprising: a light source block provided on each of the liquid crystal panel blocks divided into a plurality of the liquid crystal panels, and irradiating the liquid crystal panel blocks with light.
  2. 　前記液晶パネルに画像が表示される領域の液晶素子に接続される前記データ線に前記画素データを書き込む前記液晶垂直方向制御回路を動作させ、また前記走査線を駆動する前記液晶水平方向制御回路を動作させる液晶制御回路と、
    　前記液晶パネルに画像が表示される領域の液晶素子を含む前記液晶パネルの前記光源ブロックを点灯制御するバックライト制御回路と
    　をさらに有することを特徴とする請求項１に記載の液晶モニタ。     The liquid crystal vertical direction control circuit for operating the liquid crystal vertical direction control circuit for writing the pixel data to the data lines connected to the liquid crystal elements in a region where an image is displayed on the liquid crystal panel and driving the scanning lines. A liquid crystal control circuit to be operated;
    The liquid crystal monitor according to claim 1, further comprising: a backlight control circuit that controls lighting of the light source block of the liquid crystal panel including a liquid crystal element in a region where an image is displayed on the liquid crystal panel.
  3. 　外部から入力される映像信号入力を解析し、液晶パネルに表示する画像の水平方向の画素数を、駆動するデータ線数として、また垂直方向の画素数を、駆動する走査線数として抽出し、前記データ線数に対応した数の前記液晶垂直方向制御回路を動作させ、前記操作線数に対応する数の前記液晶水平方向制御回路を駆動するための制御信号を前記液晶制御回路に出力するモニタ制御回路をさらに有することを特徴とする請求項１または請求項２に記載の液晶モニタ。 Analyzing the video signal input from the outside, extracting the number of pixels in the horizontal direction of the image displayed on the liquid crystal panel as the number of data lines to drive, and the number of pixels in the vertical direction as the number of scanning lines to drive, A monitor for operating the number of liquid crystal vertical direction control circuits corresponding to the number of data lines and outputting a control signal for driving the number of liquid crystal horizontal direction control circuits corresponding to the number of operation lines to the liquid crystal control circuit The liquid crystal monitor according to claim 1, further comprising a control circuit.
  4. 　前記液晶パネルブロックにおける前記データ線の数と、前記液晶垂直方向制御回路の制御する前記データ線の数が同一であり、前記液晶パネルブロックにおける前記走査線の数と前記液晶水平方向制御回路の制御する走査線の数が同一であることを特徴とする請求項３に記載の液晶モニタ。 The number of the data lines in the liquid crystal panel block and the number of the data lines controlled by the liquid crystal vertical direction control circuit are the same, and the number of the scanning lines in the liquid crystal panel block and the control of the liquid crystal horizontal direction control circuit The liquid crystal monitor according to claim 3, wherein the number of scanning lines is the same.
  5. 　マトリクス状に配線された複数のデータ線及び複数の走査線の交点の各々に液晶素子が配置された液晶パネルを有する液晶モニタの制御方法であって、
    　液晶垂直方向制御回路が前記複数のデータ線が分割された複数のデータ線グループの各々に設けられ、当該データ線グループ内のデータ線に対し、画像のデータを供給する液晶垂直方向制御過程と、
    　液晶水平方向制御回路が前記複数の走査線が分割された複数の走査線グループの各々に設けられ、当該走査線グループ内の走査線を駆動し、前記データ線の画素データを前記液晶素子に書き込む液晶水平方向制御過程と、
    　バックライト制御回路が前記液晶パネルが複数に分割された液晶パネルブロックの各々に設けられ、当該液晶パネルブロックに対して光を照射する光源ブロックの点灯制御を行うバックライト制御過程と
    　を有することを特徴とする液晶モニタの制御方法。
          A control method of a liquid crystal monitor having a liquid crystal panel in which a liquid crystal element is arranged at each of intersections of a plurality of data lines and a plurality of scanning lines wired in a matrix,
    A liquid crystal vertical direction control circuit is provided in each of a plurality of data line groups into which the plurality of data lines are divided, and a liquid crystal vertical direction control process for supplying image data to the data lines in the data line group;
    A liquid crystal horizontal control circuit is provided in each of the plurality of scanning line groups obtained by dividing the plurality of scanning lines, drives the scanning lines in the scanning line group, and writes pixel data of the data lines to the liquid crystal element. LCD horizontal direction control process,
    A backlight control circuit provided in each of the liquid crystal panel blocks in which the liquid crystal panel is divided into a plurality of parts, and a backlight control process for performing lighting control of a light source block that irradiates light to the liquid crystal panel block. A method for controlling a liquid crystal monitor.
PCT/JP2011/055619 2011-03-10 2011-03-10 Liquid crystal monitor WO2012120675A1 (en)

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Citations (6)

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JPH03198026A (en) * 1989-12-27 1991-08-29 Hitachi Ltd Liquid crystal display device, back light control system, and information processor
JPH10105107A (en) * 1996-09-30 1998-04-24 Toshiba Corp Flat panel display device
JPH11184434A (en) * 1997-12-19 1999-07-09 Seiko Epson Corp Liquid crystal device and electronic equipment
JP2000010520A (en) * 1998-06-25 2000-01-14 Canon Inc Image display device and its display control method
JP2001142409A (en) * 1999-11-12 2001-05-25 Sony Corp Video display device and illumination control method in the video display device
JP2007163562A (en) * 2005-12-09 2007-06-28 Sharp Corp Video display device and video display method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03198026A (en) * 1989-12-27 1991-08-29 Hitachi Ltd Liquid crystal display device, back light control system, and information processor
JPH10105107A (en) * 1996-09-30 1998-04-24 Toshiba Corp Flat panel display device
JPH11184434A (en) * 1997-12-19 1999-07-09 Seiko Epson Corp Liquid crystal device and electronic equipment
JP2000010520A (en) * 1998-06-25 2000-01-14 Canon Inc Image display device and its display control method
JP2001142409A (en) * 1999-11-12 2001-05-25 Sony Corp Video display device and illumination control method in the video display device
JP2007163562A (en) * 2005-12-09 2007-06-28 Sharp Corp Video display device and video display method

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