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WO2014087898A1 - Dispositif d'affichage à cristaux liquides - Google Patents

Dispositif d'affichage à cristaux liquides Download PDF

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Publication number
WO2014087898A1
WO2014087898A1 PCT/JP2013/081905 JP2013081905W WO2014087898A1 WO 2014087898 A1 WO2014087898 A1 WO 2014087898A1 JP 2013081905 W JP2013081905 W JP 2013081905W WO 2014087898 A1 WO2014087898 A1 WO 2014087898A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
crystal panel
wiring
ghost
source
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2013/081905
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English (en)
Japanese (ja)
Inventor
亮 山川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
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Sharp Corp
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Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Publication of WO2014087898A1 publication Critical patent/WO2014087898A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G09G3/3685—Details of drivers for data electrodes
    • 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
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0209—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
    • 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
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0219—Reducing feedthrough effects in active matrix panels, i.e. voltage changes on the scan electrode influencing the pixel voltage due to capacitive coupling

Definitions

  • the present invention relates to a liquid crystal display device having a ghost correction function for correcting a ghost generated in a liquid crystal panel.
  • a ghost generated when a video signal to be displayed is written by being shifted by one line from a position (line) to be displayed causes a reduction in display quality.
  • the amount of generation of the ghost varies depending on the amount of blunting of the gate signal and the source signal.
  • the amount of bluntness of each signal tends to increase as the distance from the signal supply source side increases. That is, since the amount of ghost generation varies depending on the distance from the gate driver and the source driver, there are locations where the amount of ghost generation is large and portions within the liquid crystal panel.
  • the region X is far from the source driver 1011 and close to the gate driver 1012. Therefore, the rear ghost is maximum, and in the region Y, the rear ghost is minimum because it is close to the source driver 1011 and far from the gate driver 1012.
  • each signal is supplied to the liquid crystal panel 1010 at the timing shown in FIG. 15A, and as shown in FIG. 15B, the source line to be driven and the source line
  • the ghost generated in the shifted source line is conspicuous.
  • each signal is supplied to the liquid crystal panel 1010 at the timing shown in FIG. 16A, and as shown in FIG. ghosts generated in the source line that are shifted from the source line are not noticeable.
  • the generation amount of the ghost is different, that is, the fact that the generation amount of the ghost has an in-plane distribution significantly deteriorates the display quality as a liquid crystal display.
  • the ghost correction coefficient is changed according to the luminance level difference between the front and rear lines, so that the ghost is appropriately corrected according to the characteristics of the liquid crystal panel and the luminance difference between the front and rear lines. is doing.
  • Japanese Patent Publication Japanese Patent Laid-Open No. 2003-150131 (published on May 23, 2003)
  • the present invention has been made in view of the above-described problems, and its purpose is to simplify the correction parameter (ghost correction coefficient), thereby suppressing an increase in development period and cost necessary for generating the correction parameter. It is an object of the present invention to provide a liquid crystal display device that can be used.
  • a liquid crystal display device includes a liquid crystal panel including a plurality of display pixels and a plurality of driving wirings for driving the display pixels.
  • a liquid crystal display device including a driving circuit that applies a driving voltage for driving to the display pixel via the driving wiring a dullness of a signal generated by the driving voltage applied to the driving wiring is reduced in the liquid crystal panel. It is uniform in the plane.
  • FIG. 1 It is a schematic block diagram of the liquid crystal display device which concerns on Embodiment 2 of this invention. The relationship between the temperature of the liquid crystal panel and the occurrence of ghost is shown, (a) is a timing chart showing an example of ghost occurrence at normal temperature, (b) is a timing chart showing ghost occurrence at low temperature, (C) is a timing chart showing generation of a ghost at a high temperature. It is a schematic block diagram of the liquid crystal display device which concerns on Embodiment 3 of this invention. It is a figure which shows the ghost correction amount of the both ends of the liquid crystal panel shown in FIG. It is a figure which shows the ghost correction amount of the center part of the liquid crystal panel shown in FIG. It is a schematic block diagram of the liquid crystal display device shown in FIG.
  • FIG. 1 is a schematic block diagram of the liquid crystal display device which concerns on Embodiment 4 of this invention. It is a figure which shows an example of the ghost generation
  • (A) is the timing chart of each signal which shows the state of the ghost generation by the relationship between the dullness of the source signal and the dullness of the gate signal, and (b) is an example of the ghost generation at the timing chart shown in (a).
  • FIG. (A) is the timing chart of each signal which shows the state of the ghost generation by the relationship between the dullness of the source signal and the dullness of the gate signal, and (b) is a ghost generation example in the timing chart shown in (a).
  • FIG. 1 is a plan view showing a schematic structure of a liquid crystal display device 101 according to the present embodiment.
  • the liquid crystal display device 101 includes a liquid crystal panel 10, a source driver (drive circuit) 11, and a gate driver 12.
  • liquid crystal panel 10 a plurality of source wirings (driving wirings) and a plurality of gate wirings are arranged orthogonally, and pixel electrodes (display pixels: not shown) are formed at intersections of the respective wirings.
  • This is an active matrix type liquid crystal panel, and an image is displayed in the active area 10a.
  • the source driver 11 applies a driving voltage to the pixel electrode, supplies a source signal to the source wiring of the liquid crystal panel 10, and the gate driver 12 applies a gate signal to the gate wiring of the liquid crystal panel 10. Supply.
  • the source driver 11 of the liquid crystal panel 10 is connected to the source wiring 13 formed in the active area 10 a of the liquid crystal panel 10.
  • the lead-out wiring 13a led out from each source wiring 13 and the connection terminal 11a of the source driver 11 are connected so as to correspond to each other.
  • the wiring resistance of the lead-out wiring 13a in the central portion A of the liquid crystal panel 10 is formed to be higher than the wiring resistance of the lead-out wiring 13a in the end portion (other than the central portion A) of the liquid crystal panel 10. Yes.
  • the wiring resistance is increased by making the length of the lead-out wiring 13a in the central portion A longer than the length of the lead-out wiring 13a in the end portion B.
  • the dullness of the gate signal is small in the end region C close to the gate driver 12 and large in the central region D.
  • the dullness of the source signal is smaller near the source driver 11 and larger near the source driver 11. Therefore, in the end region C, the source signal is greatly dull, but the gate signal is also dull, so that the amount of post-ghost is maximized (FIG. 3). Further, in the central region D, the gate signal is greatly dull, but the source signal is dull, so that the amount of post-ghost is minimized (FIG. 5).
  • the amount of ghost generation varies from region to region.
  • the wiring resistance of the lead-out wiring 13a is made different between the central portion A and the end portion B as described above.
  • FIG. 2 is a timing chart showing a ghost occurrence state in the central region D.
  • FIG. 3 is a timing chart showing a ghost occurrence state in the end region C.
  • the central region D has a high wiring resistance of the lead-out wiring 13a as in the central part A shown in FIG. 1, as shown in FIG. 2, the central region D is in a state equivalent to the maximum rear ghost shown in FIG. The amount of after-ghost is generated.
  • the in-plane variation of the ghost generation amount can be minimized at the design stage of the liquid crystal display device 101.
  • FIG. 4 shows ghost correction parameters when the post-ghost shown in FIGS. 2 and 3 occurs.
  • the horizontal axis indicates the signal line
  • the vertical axis indicates the scanning line
  • the ghost correction parameter may be set for each scanning line.
  • the ghost correction parameter is simplified by minimizing the in-plane variation of the ghost generation amount at the design stage of the liquid crystal display device 101. As a result, the calculation amount of the ghost correction process is suppressed, and the capacity of the IC required for the correction circuit can be reduced.
  • the wiring resistance of the lead-out wiring 13a of the source wiring 13 is increased in the central portion A of the liquid crystal panel 10.
  • the ghost generation amount is approximately the same as that of the end B where the normal ghost generation amount is maximum.
  • the in-plane distribution of the ghost generation amount is uniform even if the ghost parameters are the same.
  • FIG. 7 is a schematic configuration diagram of the liquid crystal display device 201 according to the present embodiment.
  • liquid crystal display device 201 what is different from the first embodiment is how to set the wiring resistance of the lead-out wiring 13a of the source wiring 13.
  • the wiring resistance in the central portion A is increased in order to make the in-plane ghost generation amount uniform.
  • the wiring resistance of the lead-out wiring 13a of the source wiring 13 at the end B is set to be lower than the wiring resistance of the lead-out wiring 13a of the source wiring 13 at the center A (other than the panel end and other than the end B). ing.
  • the wiring resistance is lowered by making the wiring of the lead-out wiring 13a at the end B thicker than the wiring of the lead-out wiring 13a at the center A.
  • the wiring resistance of the lead-out wiring 13a in the central portion A of the liquid crystal panel 10 is the end portion of the liquid crystal panel 10 (other than the central portion A).
  • the wiring resistance of the lead-out wiring 13a is higher.
  • the in-plane distribution of the ghost generation amount is made uniform by making the generation amount of the post-ghost in the central portion A and the end portion B substantially the same.
  • FIG. 8 is a diagram for explaining that the amount of ghost generation varies depending on the temperature.
  • FIG. 8A shows a state in which the source signal and the gate signal are dull at room temperature.
  • the ghost after the source signal Sout n increases and the ghost before the source signal Sout n + 1 decreases as shown in FIG.
  • the ghost after the source signal Sout n decreases, and the ghost before the source signal Sout n + 1 increases.
  • FIG. 9 is a schematic configuration diagram of the liquid crystal display device 301 according to the present embodiment.
  • the liquid crystal display device 301 has a configuration in which the LED light sources 1 are disposed on both ends of the liquid crystal panel 10 and the light guide plate 2 is disposed on the back surface of the liquid crystal panel 10.
  • the temperature closer to the LED light source 1 is higher, the temperature at the end E near the LED light source 1 is higher than that at the center F far from the LED light source 1 in the liquid crystal panel 10.
  • the ghost correction parameter is changed for each location according to the backlight layout.
  • the ghost correction parameter is set weak in the vicinity of the backlight light source (edge E) where the panel is likely to become hot.
  • the ghost correction parameter is set to be stronger in the vicinity of the center of the panel (central portion F) where the panel tends to be relatively low in temperature.
  • ghost correction parameters look-up tables
  • ghost correction parameters that define voltages for ghost correction based on the luminance of the previous frame and the luminance of the next frame, respectively.
  • a ghost correction circuit (not shown) that performs ghost correction so as to eliminate ghost generated in the source signal flowing through the source wiring 13 is provided, and the LED light sources 1 are disposed on both ends of the liquid crystal panel 10;
  • the ghost correction circuit has a source that flows in the source wiring 13 disposed near the center of the liquid crystal panel 10.
  • the ghost correction strength for the signal is set to be higher than the ghost correction strength for the source signal flowing in the source wiring arranged on the end side of the liquid crystal panel.
  • the liquid crystal display device 301 realizes the ghost correction processing with, for example, a block configuration as shown in FIG.
  • the liquid crystal display device 301 includes a liquid crystal panel unit 311, a backlight unit 312, an image data acquisition unit 313, an image processing unit 314, a liquid crystal controller 315, and a synchronization circuit 316 as shown in FIG.
  • the liquid crystal panel unit 311 includes a liquid crystal panel 10 and a liquid crystal driver 312 for driving the liquid crystal panel 10.
  • the liquid crystal driver 312 includes the source driver 11 shown in FIG.
  • the liquid crystal driver 312 drives the liquid crystal panel 10 based on a control signal from the liquid crystal controller 315.
  • the backlight unit 312 includes an LED light source 1, an LED driver 322 for driving the LED light source 1, and an LED controller 321 for outputting a control signal for controlling the LED driver 322.
  • the LED controller 321 outputs a control signal generated based on the LED data signal from the image processing unit 314 to the LED driver 322 and also outputs it to the synchronization circuit 316.
  • the image data acquisition unit 313 acquires image data of an image to be displayed on the liquid crystal panel 10 from an external device or the like, and outputs the image data to the subsequent image processing unit 314.
  • the image data acquired here is a color video signal.
  • the image processing unit 314 includes a Y / C separation circuit 341, a signal adjustment circuit 342, a color demodulation circuit 343, a contrast adjustment circuit 344, a gamma correction circuit 345, and a signal generation circuit 346.
  • the Y / C separation circuit 341 separates the color video signal from the image data acquisition unit 313 into a luminance signal (Y) and a color signal (C).
  • the separated luminance signal (Y) and color signal (C) are output to the color demodulation circuit 343 after predetermined adjustment by the signal adjustment circuit 342.
  • the color demodulation circuit 343 converts the adjusted luminance signal (Y) and color signal (C) into R, G, and B signals that are the three primary colors of light.
  • the R, G, and B signals are subjected to contrast adjustment by the contrast adjustment circuit 344, are subjected to gamma correction by the gamma correction circuit 345, and are output to the signal generation circuit 346.
  • the signal generation circuit 346 generates an LED data signal to be displayed on the liquid crystal panel 10 from the R, G, and B signals subjected to gamma correction, and outputs the LED data signal to the liquid crystal controller 315. Output.
  • the liquid crystal controller 315 constitutes a ghost correction circuit including a drive voltage value determination circuit 351, a ghost voltage value determination circuit 352, and a memory 353.
  • the driving voltage value determining circuit 351 determines a driving voltage value for driving the liquid crystal panel 10 from the LCD data signal from the image processing unit 314 and outputs the driving voltage value to the ghost voltage value determining circuit 352.
  • the ghost voltage value determination circuit 352 refers to the ghost voltage determination LUT 353a (ghost correction parameter table) stored in the memory 353 based on the drive voltage value from the drive voltage value determination circuit 351, and determines the ghost voltage value.
  • the ghost voltage value is output to the liquid crystal driver 312 of the liquid crystal panel unit 311 in synchronization with the synchronization signal output from the synchronization circuit 316.
  • FIG. 13 is a schematic configuration diagram of the liquid crystal display device 401 according to the present embodiment.
  • the liquid crystal display device 401 includes an area-driven LED light source 3 as shown in FIG.
  • a plurality of LEDs are arranged on the back surface of the liquid crystal panel 10, and lighting of each LED is controlled according to driving of a predetermined area of the liquid crystal panel 10.
  • G indicates a state where the LED is turned off
  • H indicates a state where the LED is turned on.
  • the ghost correction parameter is changed for each location according to the backlight layout.
  • the ghost correction parameter is set to be weak in an area corresponding to backlight lighting where the panel is likely to become hot.
  • the ghost correction parameter is set to be stronger in the region corresponding to the backlight extinguishing where the panel tends to be relatively low in temperature.
  • the timing controller has at least two kinds of ghost correction parameters (lookup table) of strong / weak, and in the timing controller, the backlight control unit and the source driver drive unit work together to select the optimum ghost parameter, This embodiment can be realized.
  • a ghost correction circuit (not shown) that performs ghost correction so as to eliminate ghost generated in the source signal flowing through the source wiring 13 is provided, and the LED light source 3 is provided for each predetermined area of the liquid crystal panel 10.
  • the ghost correction circuit flows in the source wiring 13 corresponding to the light irradiated area of the liquid crystal panel 10 and the ghost correction intensity for the source signal is It is set higher than the ghost correction intensity for the source signal flowing through the source wiring 13 corresponding to the area not irradiated with light.
  • the above-described ghost correction processing can be realized with the same block configuration (FIG. 12) as the liquid crystal display device 301 of the third embodiment.
  • a liquid crystal display device includes a liquid crystal panel 10 including a plurality of display pixels and a plurality of driving wirings (source wirings 13) for driving the display pixels, and driving the display pixels.
  • the dullness of the signal (source signal) generated by the driving voltage applied to the liquid crystal panel 10 is made uniform in the plane of the liquid crystal panel 10.
  • the amount of ghost generation can be made uniform in the plane by making the signal (source signal) blunt in the plane of the liquid crystal panel 10.
  • the liquid crystal display device includes a lead-out wiring in the central portion A of the liquid crystal panel 10 among the lead-out wirings 13a led out from the drive circuit (source driver 11) to the drive wiring (source wiring 13).
  • the wiring resistance of 13a is made higher than the wiring resistance of the lead-out wiring 13a other than the central portion A of the liquid crystal panel 10.
  • the dullness of the signal (source signal) can be made uniform in the plane of the liquid crystal panel 10, so that the amount of ghost generation can be made uniform in the plane.
  • the liquid crystal display device includes a lead-out line at the end B of the liquid crystal panel 10 among the lead-out lines 13a drawn from the drive circuit (source driver 11) to the drive line (source line 13).
  • the wiring resistance of 13a is made lower than the wiring resistance of the lead-out wiring 13a other than the end B of the liquid crystal panel 10.
  • the dullness of the signal (source signal) can be made uniform in the plane of the liquid crystal panel 10, so that the amount of ghost generation can be made uniform in the plane.
  • the driving circuit is the source driver 11 and the driving wiring is the source wiring 13
  • the source wiring 13 in the central portion A of the liquid crystal panel 10 is used.
  • the wiring resistance of the extraction wiring 13a is set higher than the wiring resistance of the extraction wiring 13a of the source wiring 13 other than the central portion A of the liquid crystal panel 10.
  • the driving circuit is the source driver 11 and the driving wiring is the source wiring 13
  • the source wiring 13 at the end B of the liquid crystal panel 10 is The wiring resistance of the extraction wiring 13 a is set lower than the wiring resistance of the extraction wiring 13 a of the source wiring 13 other than the end B of the liquid crystal panel 10.
  • the liquid crystal display device includes an LED light source 1 as a backlight and a ghost correction circuit (liquid crystal controller 315) that performs ghost correction so as to eliminate ghost generated in a source signal flowing through the source wiring 13.
  • the backlight LED light source 1 is an edge-type backlight that is disposed at both ends of the liquid crystal panel 10 and irradiates light through the light guide plate 2 disposed on the back surface of the liquid crystal panel 10.
  • the ghost correction circuit distributes the ghost correction intensity with respect to the source signal flowing through the source wiring 13 arranged near the central portion (central region F) of the liquid crystal panel 10 to the end portion (end region E) side of the liquid crystal panel 10. The ghost correction strength for the source signal flowing in the source wiring 13 is increased.
  • the ghost characteristics can be controlled to be substantially constant over the entire panel.
  • the liquid crystal display device includes the LED light source 3 as a backlight and a ghost correction circuit that performs ghost correction so as to eliminate ghost generated in the source signal flowing through the source wiring 13.
  • the (LED light source 3) is an area active type backlight that performs light irradiation for each predetermined area of the liquid crystal panel 10
  • the ghost correction circuit corresponds to an area of the liquid crystal panel 10 that is irradiated with light.
  • the ghost correction intensity for the source signal flowing in the source wiring 13 is set higher than the ghost correction intensity for the source signal flowing in the source wiring 13 corresponding to the area where no light is irradiated in the liquid crystal panel 10.
  • the ghost characteristics can be controlled to be substantially constant over the entire panel.
  • the present invention can be used for all liquid crystal display devices having a ghost correction function.
  • LED light source (backlight) 2 Light guide plate 3 LED light source (backlight) 10 Liquid crystal panel 10a Active area 11 Source driver (drive circuit) 11a Connection terminal 12 Gate driver (drive circuit) 13 Source wiring (drive wiring) 13a Lead wiring 101 Liquid crystal display device 201 Liquid crystal display device 301 Liquid crystal display device 315 Liquid crystal controller (ghost correction circuit) 401 Liquid crystal display device A Central part B End part C End part area D Central area E End part F Central part

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

Le présent dispositif d'affichage à cristaux liquides (101) rend la matité du signal source , laquelle provient d'une tension de pilotage qui est impartie au circuit de source (13) d'un panneau à cristaux liquides (10), uniforme dans l'écran du panneau à cristaux liquides (10). Il est ainsi possible, en simplifiant un paramètre de correction fantôme de supprimer les accroissements dans le temps de développement et les dépenses requises pour la création du paramètre de correction fantôme.
PCT/JP2013/081905 2012-12-04 2013-11-27 Dispositif d'affichage à cristaux liquides Ceased WO2014087898A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012265781 2012-12-04
JP2012-265781 2012-12-04

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WO2014087898A1 true WO2014087898A1 (fr) 2014-06-12

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006145798A (ja) * 2004-11-19 2006-06-08 Hitachi Displays Ltd 画像信号表示装置
JP2007041229A (ja) * 2005-08-02 2007-02-15 Toshiba Matsushita Display Technology Co Ltd アクティブマトリクス型液晶表示装置
WO2010131359A1 (fr) * 2009-05-15 2010-11-18 株式会社 東芝 Dispositif d'affichage d'image
JP2011248215A (ja) * 2010-05-28 2011-12-08 Hitachi Consumer Electronics Co Ltd 液晶表示装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006145798A (ja) * 2004-11-19 2006-06-08 Hitachi Displays Ltd 画像信号表示装置
JP2007041229A (ja) * 2005-08-02 2007-02-15 Toshiba Matsushita Display Technology Co Ltd アクティブマトリクス型液晶表示装置
WO2010131359A1 (fr) * 2009-05-15 2010-11-18 株式会社 東芝 Dispositif d'affichage d'image
JP2011248215A (ja) * 2010-05-28 2011-12-08 Hitachi Consumer Electronics Co Ltd 液晶表示装置

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