WO2013080990A1 - Stereoscopic display system - Google Patents

Stereoscopic display system Download PDF

Info

Publication number
WO2013080990A1
WO2013080990A1 PCT/JP2012/080699 JP2012080699W WO2013080990A1 WO 2013080990 A1 WO2013080990 A1 WO 2013080990A1 JP 2012080699 W JP2012080699 W JP 2012080699W WO 2013080990 A1 WO2013080990 A1 WO 2013080990A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid crystal
control unit
image
stereoscopic
backlight
Prior art date
Application number
PCT/JP2012/080699
Other languages
French (fr)
Japanese (ja)
Inventor
信二 住ノ江
井上　尚人
暎 冨吉
啓一 小林
弘之 鍋澤
Original Assignee
シャープ株式会社
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
Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Publication of WO2013080990A1 publication Critical patent/WO2013080990A1/en

Links

Images

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B35/00—Stereoscopic photography
    • G03B35/16—Stereoscopic photography by sequential viewing
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
    • G02B30/24—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type involving temporal multiplexing, e.g. using sequentially activated left and right shutters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/341—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using temporal multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/398—Synchronisation thereof; Control thereof

Definitions

  • the present invention relates to a stereoscopic display system that displays a stereoscopic image to an observer using stereoscopic glasses.
  • a stereoscopic display system that shows stereoscopic images to an observer using stereoscopic glasses is known.
  • the liquid crystal panel switches and displays the right-eye and left-eye images.
  • the stereoscopic glasses have liquid crystal shutters for the right eye and the left eye.
  • the stereoscopic glasses control the opening and closing of the liquid crystal shutter in synchronization with the image switching period in the liquid crystal panel. As a result, only the right-eye image is visible to the observer's right eye, and only the left-eye image is visible to the left eye. As a result, the observer can feel a stereoscopic effect.
  • the stereoscopic display system it is necessary to turn on the backlight when the liquid crystal shutter is open.
  • the backlight is turned on and turned off during the period when the liquid crystal shutter is open, the period during which the liquid crystal shutter is open is longer than the period during which the backlight is turned on. For this reason, for example, when a stereoscopic image is shown to an observer in a bright room, the stereoscopic image may appear dark.
  • Japanese Patent Application Laid-Open No. 2010-210712 discloses an image display observation system.
  • the period during which the liquid crystal shutter is open is shorter than the lighting period of the backlight. Therefore, for example, even when a stereoscopic image is shown to an observer in a bright room or the like, the stereoscopic image is unlikely to appear dark.
  • An object of the present invention is to provide a stereoscopic display system capable of reducing crosstalk while brightening a stereoscopic image shown to an observer.
  • the stereoscopic display system of the present invention includes a liquid crystal panel having a display area, a panel control unit that switches and displays images for the right eye and the left eye in the liquid crystal panel, and liquid crystal shutters for the right eye and the left eye.
  • the entire display area is illuminated, and after the glasses controller finishes applying the driving voltage to the liquid crystal shutter, the backlight is A turn off.
  • the stereoscopic display system of the present invention can reduce crosstalk while brightening a stereoscopic image shown to an observer.
  • FIG. 1 is a functional block diagram showing an example of a schematic configuration of a stereoscopic display system as an embodiment of the present invention.
  • FIG. 2 is a time chart showing the intensity of light observed through the liquid crystal shutter when the stereoscopic display system is controlled by the control method of the present embodiment.
  • FIG. 3 is a time chart showing the intensity of light observed through the liquid crystal shutter when the stereoscopic display system is controlled by the conventional control method 1.
  • FIG. 4 is a time chart showing the intensity of light observed through the liquid crystal shutter when the stereoscopic display system is controlled by the conventional control method 2.
  • a stereoscopic display system includes a liquid crystal panel having a display area, a panel control unit that switches and displays images for the right eye and the left eye, and the right eye and the left eye in the liquid crystal panel.
  • Stereoscopic display glasses having a liquid crystal shutter for use, a glasses control unit for controlling opening and closing of the liquid crystal shutter in synchronization with an image switching period in the liquid crystal panel, and the display area disposed behind the liquid crystal panel
  • a light control unit that controls the lighting state of the backlight, the light control unit, after the glasses control unit starts to apply a driving voltage to the liquid crystal shutter, By turning on the backlight, the entire display area is illuminated, and after the glasses controller finishes applying the driving voltage to the liquid crystal shutter. It turns off the backlight (first configuration).
  • the period during which the driving voltage is applied to the liquid crystal shutter is shorter than the backlight lighting period. Therefore, for example, even when a stereoscopic image is shown to an observer in a bright room or the like, the stereoscopic image is unlikely to appear dark.
  • the timing when the backlight is turned on is later than the timing when the glasses controller starts to apply the drive voltage to the liquid crystal shutter. For this reason, it is possible to avoid an image that should not be visible. As a result, crosstalk is reduced.
  • the light control unit is configured such that the glasses control unit starts application of a driving voltage to the liquid crystal shutter, and the transmittance of the liquid crystal shutter is 80. After reaching%, the backlight is turned on. In such a configuration, an image that should not be visible is more difficult to see. Therefore, crosstalk is further reduced.
  • the panel control unit displays the same image twice in succession on the display area, and the glasses control unit is configured so that the panel control unit performs the second time.
  • the glasses control unit is configured so that the panel control unit performs the second time.
  • each figure referred below demonstrates the simplified main component required in order to demonstrate this invention among the structural members of embodiment of this invention for convenience of explanation. Therefore, the three-dimensional display system according to the present invention can include arbitrary constituent members that are not shown in the drawings referred to in this specification. Moreover, the dimension of the member in each figure does not represent the dimension of an actual structural member, the dimension ratio of each member, etc. faithfully.
  • FIG. 1 is a functional block diagram illustrating a schematic configuration of the stereoscopic display system 10.
  • the stereoscopic display system 10 includes a stereoscopic display device 12 and stereoscopic glasses 14. Specific examples of the stereoscopic display device 12 include a home television.
  • the stereoscopic display device 12 displays a stereoscopic image.
  • the stereoscopic image is an image for the right eye viewed with the right eye of the observer and an image for the left eye viewed with the left eye of the observer.
  • the stereoscopic display device 12 includes a liquid crystal panel 16, a backlight 18, and a control unit 20.
  • the liquid crystal panel 16 includes an active matrix substrate, a counter substrate, and a liquid crystal layer sealed between these substrates.
  • the operation mode of the liquid crystal is arbitrary.
  • the 3D driving method is arbitrary.
  • the liquid crystal panel 16 has a plurality of pixels (not shown). The plurality of pixels are formed in a matrix. A region where a plurality of pixels are formed is a display region 17 of the liquid crystal panel 16.
  • Each pixel may have a plurality of sub-pixels.
  • the plurality of sub-pixels are, for example, a red pixel, a green pixel, and a blue pixel.
  • the plurality of sub-pixels may include yellow pixels.
  • the backlight 18 is disposed behind the liquid crystal panel 16 (on the side opposite to the observer).
  • the backlight 18 irradiates the entire display area 17 with light all at once.
  • the backlight 18 may be, for example, a direct type, an edge light type, or a planar light source type.
  • the light source of the backlight 18 may be a light emitting diode or an organic EL.
  • Control unit 20 controls stereoscopic display device 12.
  • the control unit 20 includes a panel control unit 22, a glasses control unit 24, and a light control unit 26.
  • Panel control unit 22 controls image display on liquid crystal panel 16.
  • the panel control unit 22 generates various signals necessary for image display based on the video signal sent from the outside and the timing signal.
  • the panel control unit 22 outputs the generated signal to the gate driver 28 and the source driver 30.
  • the panel control unit 22 writes the image data of the stereoscopic image to be displayed using the gate driver 28 and the source driver 30. Thereby, the stereoscopic image to be displayed is displayed in the display area 17.
  • a plurality of gate lines 32 are connected to the gate driver 28.
  • the gate line 32 is connected to a gate electrode of a thin film transistor (not shown).
  • the thin film transistor is formed on an active matrix substrate.
  • the thin film transistor functions as a switching element.
  • the gate line 32 transmits a scanning signal output from the gate driver 28.
  • the thin film transistor is driven by the scanning signal input to the gate electrode.
  • a plurality of source lines 34 are connected to the source driver 30.
  • the source line 34 is connected to the source electrode of the thin film transistor.
  • the source line 34 transmits a display signal output from the source driver 30.
  • a display signal is input to the thin film transistor.
  • the storage capacitor is composed of a pixel electrode, a common electrode disposed to face the pixel electrode, and a liquid crystal layer positioned between these electrodes.
  • the pixel electrode is formed on the active matrix substrate.
  • the pixel electrode is connected to the drain electrode of the thin film transistor.
  • the common electrode is formed on the counter substrate.
  • the gray scale of the pixel is controlled by accumulating charges corresponding to the display signal in the storage capacitor. As a result, the liquid crystal panel 16 can display an image.
  • the glasses controller 24 controls opening and closing of the liquid crystal shutters 14L and 14R in the stereoscopic glasses 14.
  • the glasses controller 24 includes a driver that applies a driving voltage to the liquid crystal shutters 14L and 14R. This driver is provided in the stereoscopic glasses 14, for example.
  • the stereoscopic glasses 14 include a liquid crystal shutter 14R for the right eye and a liquid crystal shutter 14L for the left eye.
  • the liquid crystal shutter 14 ⁇ / b> R is positioned in front of the viewer's right eye in a state where the viewer wears the stereoscopic glasses 14.
  • the liquid crystal shutter 14L is positioned in front of the left eye of the observer in a state where the observer wears the stereoscopic glasses 14.
  • the liquid crystal shutters 14R and 14L are, for example, liquid crystal panels.
  • the glasses controller 24 opens and closes the liquid crystal shutters 14R and 14L.
  • the liquid crystal shutter 14R is opened (light transmission state), and the liquid crystal shutter 14L is closed (light non-transmission state).
  • the liquid crystal shutter 14L is opened (light transmission state), and the liquid crystal shutter 14a is closed (light non-transmission state).
  • the light control unit 26 controls the lighting of the backlight 18.
  • FIG. 2 is a time chart showing the intensity of light observed through the liquid crystal shutter when the stereoscopic display system is controlled by the control method of the present embodiment.
  • FIG. 3 is a time chart showing the intensity of light observed through the liquid crystal shutter when the stereoscopic display system 10 is controlled by the conventional control method 1.
  • FIG. 4 is a time chart showing the intensity of light observed through the liquid crystal shutter when the stereoscopic display system 10 is controlled by the conventional control method 2.
  • the conventional control method 1 differs in the lighting start time of the backlight 18 compared with the control method of this embodiment.
  • the conventional control method 2 differs from the control method 2 of the present embodiment in the period during which the liquid crystal shutters 14L and 14R are open.
  • the panel control unit 22 writes the image data of the stereoscopic image to be displayed from the top to the bottom of the display area 17.
  • the frequency at which the panel control unit 22 writes image data is 120 Hz.
  • the panel control unit 22 writes the image data of the left eye image and the image data of the right eye image alternately once each. Accordingly, the left eye image and the right eye image are alternately displayed once in the display area 17.
  • the left eye image is a white image (white image) of the entire display area 17
  • the right eye image is a black image (black image) of the entire display area 17.
  • 2 to 4 show time charts showing the transmittance of the liquid crystal in the display region 17. The transmittance of the liquid crystal is shown for each of the uppermost part, the central part and the lowermost part of the display area 17. As shown in FIGS. 2 to 4, the transmissivity of the liquid crystal changes gradually in any part.
  • the glasses controller 24 applies a driving voltage to the liquid crystal shutters 14 ⁇ / b> L and 14 ⁇ / b> R at a timing when the liquid crystal at the central portion in the display region 17 reaches a predetermined transmittance.
  • the operation mode of the liquid crystal in the liquid crystal shutters 14L and 14R is the TN mode. Since the response speed of the liquid crystal molecules is slow, the transmittance of the liquid crystal shutters 14L and 14R does not increase immediately as shown in FIGS.
  • the light control unit 26 turns on the entire backlight 18 after the glasses control unit 24 starts applying the driving voltage to the liquid crystal shutters 14L and 14R.
  • FIGS. 2 and 3 are time charts showing the light intensity when viewing the display region 17 through the liquid crystal shutters 14L and 14R.
  • hatched portions indicate differences between the case where the control method of the present embodiment is employed and the case where the conventional control method 1 is employed.
  • the back of the liquid crystal shutters 14 ⁇ / b> L and 14 ⁇ / b> R starts to increase in transmittance (timing when the glasses controller 24 applies the drive voltage to the liquid crystal shutters 14 ⁇ / b> L and 14 ⁇ / b> R).
  • the light 18 is turned on.
  • an image having a light intensity lower than the original light intensity can be seen in the left eye of the observer at an early stage.
  • an image that should not be seen is seen in the right eye of the observer. That is, leakage light is observed with the right eye of the observer. This leakage light is due to the slow response speed of the liquid crystal molecules in the liquid crystal panel 16.
  • the light control unit 26 turns on the backlight 18 on the entire surface. Therefore, crosstalk is further suppressed.
  • the light control unit 26 turns on the backlight 18 after the glasses control unit 24 starts applying the driving voltage to the liquid crystal shutters 14 ⁇ / b> L and 14 ⁇ / b> R, and the glasses control unit 24. After the application of the driving voltage to the liquid crystal shutters 14L and 14R is finished, the backlight 18 is turned off.
  • the case where the control method of the present embodiment is adopted is compared with the case where the conventional control method 2 is adopted.
  • the period when the drive voltage is applied to the liquid crystal shutters 14 ⁇ / b> L and 14 ⁇ / b> R is more than The lighting period of the backlight 18 is short. Therefore, for example, when a stereoscopic image is shown to the observer in a bright room or the like, the bright stereoscopic image can be shown to the observer.
  • the panel control unit 22 may display the same image in the display area 17 twice in succession.
  • the glasses control unit 24 starts applying a driving voltage to the liquid crystal shutters 14L and 14R. In this way, an image that should not be originally visible becomes more difficult to see. Therefore, crosstalk is further reduced.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Stereoscopic And Panoramic Photography (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

Provided is a stereoscopic display system with which, while making brighter a stereoscopic image which is shown to an observer, it is possible to reduce crosstalk. A stereoscopic display system comprises: a panel control unit (22) which switch displays a right-eye and a left-eye image in a liquid-crystal panel (16); an eyeglass control unit (24) which synchronizes with the switch period of the image in the liquid-crystal panel (16) and controls the opening and closing of liquid-crystal shutters (14L, 14R) which stereoscopic viewing eyeglasses (14) comprise; and a light control unit (26) which controls the lighting state of a backlight (18) which is positioned behind the liquid-crystal panel (16) and which illuminates the totality of a display region (17). After the eyeglass control unit (24) commences applying a drive voltage to the liquid-crystal shutters (14L, 14R), the light control unit (26) illuminates the totality of the display region (17) by switching the backlight (18) on, and after the eyeglass control unit (24) finishes applying the drive voltage to the liquid crystal shutters (14L, 14R), the light control unit (26) switches the backlight (18) off.

Description

立体表示システム3D display system
　本発明は、立体視用メガネを用いて観察者に立体画像を見せる立体表示システムに関する。 The present invention relates to a stereoscopic display system that displays a stereoscopic image to an observer using stereoscopic glasses.
　立体視用メガネを用いて、観察者に立体画像を見せる立体表示システムが知られている。このような立体表示システムにおいて、液晶パネルは、右眼用及び左眼用の画像を切替表示する。立体視用メガネは、右眼用及び左眼用の液晶シャッタを有する。立体視用メガネは、液晶パネルにおける画像の切替周期と同期して、液晶シャッタの開閉を制御する。これにより、観察者の右眼には右眼用の画像だけが見え、左眼には左眼用の画像だけが見える。その結果、観察者は、立体感を感じることができる。 A stereoscopic display system that shows stereoscopic images to an observer using stereoscopic glasses is known. In such a stereoscopic display system, the liquid crystal panel switches and displays the right-eye and left-eye images. The stereoscopic glasses have liquid crystal shutters for the right eye and the left eye. The stereoscopic glasses control the opening and closing of the liquid crystal shutter in synchronization with the image switching period in the liquid crystal panel. As a result, only the right-eye image is visible to the observer's right eye, and only the left-eye image is visible to the left eye. As a result, the observer can feel a stereoscopic effect.
　立体表示システムにおいては、液晶シャッタが開いているときに、バックライトを点灯する必要がある。液晶シャッタが開いている期間内にバックライトを点灯し且つ消灯する場合、液晶シャッタの開いている期間が、バックライトの点灯期間よりも長くなる。そのため、例えば、明るい室内等で観察者に立体画像を見せると、立体画像が暗く見えることがある。 In the stereoscopic display system, it is necessary to turn on the backlight when the liquid crystal shutter is open. When the backlight is turned on and turned off during the period when the liquid crystal shutter is open, the period during which the liquid crystal shutter is open is longer than the period during which the backlight is turned on. For this reason, for example, when a stereoscopic image is shown to an observer in a bright room, the stereoscopic image may appear dark.
　特開２０１０－２１０７１２号公報には、画像表示観察システムが開示されている。この画像表示観察システムにおいては、液晶シャッタの開いている期間が、バックライトの点灯期間よりも短くなっている。そのため、例えば、明るい室内等で観察者に立体画像を見せても、立体画像が暗く見え難い。 Japanese Patent Application Laid-Open No. 2010-210712 discloses an image display observation system. In this image display observation system, the period during which the liquid crystal shutter is open is shorter than the lighting period of the backlight. Therefore, for example, even when a stereoscopic image is shown to an observer in a bright room or the like, the stereoscopic image is unlikely to appear dark.
　しかしながら、上記公報に記載の画像表示観察システムにおいては、本来見えるべきでない画像が見えてしまう。そのため、クロストークが発生する。 However, in the image display observation system described in the above publication, an image that should not be seen is visible. As a result, crosstalk occurs.
　本発明の目的は、観察者に見せる立体画像を明るくしつつ、クロストークを軽減することができる立体表示システムを提供することである。 An object of the present invention is to provide a stereoscopic display system capable of reducing crosstalk while brightening a stereoscopic image shown to an observer.
　本発明の立体表示システムは、表示領域を有する液晶パネルと、前記液晶パネルにおいて、右眼用及び左眼用の画像を切替表示するパネル制御部と、右眼用及び左眼用の液晶シャッタを有する立体視用メガネと、前記液晶パネルにおける画像の切替周期と同期して、前記液晶シャッタの開閉を制御するメガネ制御部と、前記液晶パネルの後方に配置され、前記表示領域の全体を照明するバックライトと、前記バックライトの点灯状態を制御するライト制御部とを備え、前記ライト制御部は、前記メガネ制御部が前記液晶シャッタに対する駆動電圧の印加を開始した後で、前記バックライトを点灯することにより、前記表示領域の全体を照明し、前記メガネ制御部が前記液晶シャッタに対する駆動電圧の印加を終了した後で、前記バックライトを消灯する。 The stereoscopic display system of the present invention includes a liquid crystal panel having a display area, a panel control unit that switches and displays images for the right eye and the left eye in the liquid crystal panel, and liquid crystal shutters for the right eye and the left eye. The glasses for stereoscopic viewing, the glasses control unit that controls the opening and closing of the liquid crystal shutter in synchronization with the image switching period in the liquid crystal panel, and the rear of the liquid crystal panel to illuminate the entire display area A backlight and a light control unit that controls a lighting state of the backlight, and the light control unit lights the backlight after the glasses control unit starts applying a driving voltage to the liquid crystal shutter. Thus, the entire display area is illuminated, and after the glasses controller finishes applying the driving voltage to the liquid crystal shutter, the backlight is A turn off.
　本発明の立体表示システムは、観察者に見せる立体画像を明るくしつつ、クロストークを軽減することができる。 The stereoscopic display system of the present invention can reduce crosstalk while brightening a stereoscopic image shown to an observer.
図１は、本発明の実施形態としての立体表示システムの概略構成の一例を示す機能ブロック図である。FIG. 1 is a functional block diagram showing an example of a schematic configuration of a stereoscopic display system as an embodiment of the present invention. 図２は、本実施形態の制御方法により、立体表示システムを制御する場合に、液晶シャッタを介して観察される光の強度を示すタイムチャートである。FIG. 2 is a time chart showing the intensity of light observed through the liquid crystal shutter when the stereoscopic display system is controlled by the control method of the present embodiment. 図３は、従来の制御方法１により、立体表示システムを制御する場合に、液晶シャッタを介して観察される光の強度を示すタイムチャートである。FIG. 3 is a time chart showing the intensity of light observed through the liquid crystal shutter when the stereoscopic display system is controlled by the conventional control method 1. 図４は、従来の制御方法２により、立体表示システムを制御する場合に、液晶シャッタを介して観察される光の強度を示すタイムチャートである。FIG. 4 is a time chart showing the intensity of light observed through the liquid crystal shutter when the stereoscopic display system is controlled by the conventional control method 2.
　本発明の一実施形態に係る立体表示システムは、表示領域を有する液晶パネルと、前記液晶パネルにおいて、右眼用及び左眼用の画像を切替表示するパネル制御部と、右眼用及び左眼用の液晶シャッタを有する立体視用メガネと、前記液晶パネルにおける画像の切替周期と同期して、前記液晶シャッタの開閉を制御するメガネ制御部と、前記液晶パネルの後方に配置され、前記表示領域の全体を照明するバックライトと、前記バックライトの点灯状態を制御するライト制御部とを備え、前記ライト制御部は、前記メガネ制御部が前記液晶シャッタに対する駆動電圧の印加を開始した後で、前記バックライトを点灯することにより、前記表示領域の全体を照明し、前記メガネ制御部が前記液晶シャッタに対する駆動電圧の印加を終了した後で、前記バックライトを消灯する（第１の構成）。 A stereoscopic display system according to an embodiment of the present invention includes a liquid crystal panel having a display area, a panel control unit that switches and displays images for the right eye and the left eye, and the right eye and the left eye in the liquid crystal panel. Stereoscopic display glasses having a liquid crystal shutter for use, a glasses control unit for controlling opening and closing of the liquid crystal shutter in synchronization with an image switching period in the liquid crystal panel, and the display area disposed behind the liquid crystal panel And a light control unit that controls the lighting state of the backlight, the light control unit, after the glasses control unit starts to apply a driving voltage to the liquid crystal shutter, By turning on the backlight, the entire display area is illuminated, and after the glasses controller finishes applying the driving voltage to the liquid crystal shutter. It turns off the backlight (first configuration).
　第１の構成においては、液晶シャッタに駆動電圧が印加されている期間が、バックライトの点灯期間よりも短い。そのため、例えば、明るい室内等で観察者に立体画像を見せても、立体画像が暗く見え難い。 In the first configuration, the period during which the driving voltage is applied to the liquid crystal shutter is shorter than the backlight lighting period. Therefore, for example, even when a stereoscopic image is shown to an observer in a bright room or the like, the stereoscopic image is unlikely to appear dark.
　また、メガネ制御部が液晶シャッタに対する駆動電圧の印加を開始するタイミングよりも、バックライトが点灯するタイミングのほうが遅い。そのため、本来見えるべきではない画像が見えてしまうのを回避できる。その結果、クロストークが軽減する。 Also, the timing when the backlight is turned on is later than the timing when the glasses controller starts to apply the drive voltage to the liquid crystal shutter. For this reason, it is possible to avoid an image that should not be visible. As a result, crosstalk is reduced.
　第２の構成は、前記第１の構成において、前記ライト制御部は、前記メガネ制御部が前記液晶シャッタに対する駆動電圧の印加を開始した後であって、且つ、前記液晶シャッタの透過率が８０％以上になった後で、前記バックライトを点灯する。このような構成においては、本来見えるべきでない画像が更に見え難くなる。そのため、クロストークが更に軽減する。 According to a second configuration, in the first configuration, the light control unit is configured such that the glasses control unit starts application of a driving voltage to the liquid crystal shutter, and the transmittance of the liquid crystal shutter is 80. After reaching%, the backlight is turned on. In such a configuration, an image that should not be visible is more difficult to see. Therefore, crosstalk is further reduced.
　第３の構成は、前記第１又は第２の構成において、前記パネル制御部は同じ画像を２回連続して前記表示領域に表示し、前記メガネ制御部は、前記パネル制御部が２回目に画像を表示するときに、前記液晶シャッタに対する駆動電圧の印加を開始する。このような構成においては、本来見えるべきでない画像が更に見え難くなる。そのため、クロストークが更に軽減する。 According to a third configuration, in the first or second configuration, the panel control unit displays the same image twice in succession on the display area, and the glasses control unit is configured so that the panel control unit performs the second time. When displaying an image, application of a driving voltage to the liquid crystal shutter is started. In such a configuration, an image that should not be visible is more difficult to see. Therefore, crosstalk is further reduced.
　以下、本発明のより具体的な実施形態について、図面を参照しながら説明する。なお、以下で参照する各図は、説明の便宜上、本発明の実施形態の構成部材のうち、本発明を説明するために必要な主要部材のみを簡略化して示したものである。従って、本発明に係る立体表示システムは、本明細書が参照する各図に示されていない任意の構成部材を備え得る。また、各図中の部材の寸法は、実際の構成部材の寸法および各部材の寸法比率等を忠実に表したものではない。 Hereinafter, more specific embodiments of the present invention will be described with reference to the drawings. In addition, each figure referred below demonstrates the simplified main component required in order to demonstrate this invention among the structural members of embodiment of this invention for convenience of explanation. Therefore, the three-dimensional display system according to the present invention can include arbitrary constituent members that are not shown in the drawings referred to in this specification. Moreover, the dimension of the member in each figure does not represent the dimension of an actual structural member, the dimension ratio of each member, etc. faithfully.
　図１を参照して、本発明の実施形態としての立体表示システム１０について説明する。図１は、立体表示システム１０の概略構成を示す機能ブロック図である。 A stereoscopic display system 10 as an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a functional block diagram illustrating a schematic configuration of the stereoscopic display system 10.
　立体表示システム１０は、立体表示装置１２と、立体視用メガネ１４とを備える。立体表示装置１２の具体例としては、例えば、家庭用テレビ等がある。 The stereoscopic display system 10 includes a stereoscopic display device 12 and stereoscopic glasses 14. Specific examples of the stereoscopic display device 12 include a home television.
　立体表示装置１２は、立体視用画像を表示する。立体視用画像は、観察者の右眼で見る右眼用画像と、観察者の左眼で見る左眼用画像である。立体表示装置１２は、液晶パネル１６と、バックライト１８と、制御部２０とを備える。 The stereoscopic display device 12 displays a stereoscopic image. The stereoscopic image is an image for the right eye viewed with the right eye of the observer and an image for the left eye viewed with the left eye of the observer. The stereoscopic display device 12 includes a liquid crystal panel 16, a backlight 18, and a control unit 20.
　液晶パネル１６は、アクティブマトリクス基板と、対向基板と、これらの基板間に封入された液晶層とを備える。液晶パネル１６において、液晶の動作モードは任意である。液晶パネル１６において、３Ｄの駆動方式は任意である。 The liquid crystal panel 16 includes an active matrix substrate, a counter substrate, and a liquid crystal layer sealed between these substrates. In the liquid crystal panel 16, the operation mode of the liquid crystal is arbitrary. In the liquid crystal panel 16, the 3D driving method is arbitrary.
　液晶パネル１６は、複数の画素（図示せず）を有する。複数の画素は、マトリクス状に形成されている。複数の画素が形成された領域が、液晶パネル１６の表示領域１７である。 The liquid crystal panel 16 has a plurality of pixels (not shown). The plurality of pixels are formed in a matrix. A region where a plurality of pixels are formed is a display region 17 of the liquid crystal panel 16.
　各画素は、複数のサブ画素を有してもよい。複数のサブ画素は、例えば、赤色画素、緑色画素及び青色画素である。複数のサブ画素は、黄色画素を含んでもよい。 Each pixel may have a plurality of sub-pixels. The plurality of sub-pixels are, for example, a red pixel, a green pixel, and a blue pixel. The plurality of sub-pixels may include yellow pixels.
　バックライト１８は、液晶パネル１６の後方（観察者とは反対側）に配置される。バックライト１８は、表示領域１７の全体に対して、光を一斉に照射する。 The backlight 18 is disposed behind the liquid crystal panel 16 (on the side opposite to the observer). The backlight 18 irradiates the entire display area 17 with light all at once.
　バックライト１８は、例えば、直下型であってもよいし、エッジライト型であってもよいし、平面光源型であってもよい。バックライト１８の光源は、例えば、発光ダイオードであってもよいし、有機ＥＬであってもよい。 The backlight 18 may be, for example, a direct type, an edge light type, or a planar light source type. For example, the light source of the backlight 18 may be a light emitting diode or an organic EL.
　制御部２０は、立体表示装置１２を制御する。制御部２０は、パネル制御部２２と、メガネ制御部２４と、ライト制御部２６とを備える。 Control unit 20 controls stereoscopic display device 12. The control unit 20 includes a panel control unit 22, a glasses control unit 24, and a light control unit 26.
　パネル制御部２２は、液晶パネル１６における画像表示を制御する。パネル制御部２２は、外部から送られてくる映像信号と、タイミング信号とに基づいて、画像表示に必要な各種の信号を生成する。パネル制御部２２は、ゲートドライバ２８とソースドライバ３０に対して、生成した信号を出力する。パネル制御部２２は、ゲートドライバ２８及びソースドライバ３０を用いて、表示すべき立体視用画像の画像データを書き込む。これにより、表示すべき立体視用画像が表示領域１７に表示される。 Panel control unit 22 controls image display on liquid crystal panel 16. The panel control unit 22 generates various signals necessary for image display based on the video signal sent from the outside and the timing signal. The panel control unit 22 outputs the generated signal to the gate driver 28 and the source driver 30. The panel control unit 22 writes the image data of the stereoscopic image to be displayed using the gate driver 28 and the source driver 30. Thereby, the stereoscopic image to be displayed is displayed in the display area 17.
　ゲートドライバ２８には、複数のゲート線３２が接続されている。ゲート線３２は、薄膜トランジスタ（図示せず）のゲート電極に接続されている。薄膜トランジスタは、アクティブマトリクス基板に形成されている。薄膜トランジスタは、スイッチング素子として機能する。ゲート線３２は、ゲートドライバ２８から出力される走査信号を伝送する。ゲート電極に入力される走査信号によって、薄膜トランジスタが駆動される。 A plurality of gate lines 32 are connected to the gate driver 28. The gate line 32 is connected to a gate electrode of a thin film transistor (not shown). The thin film transistor is formed on an active matrix substrate. The thin film transistor functions as a switching element. The gate line 32 transmits a scanning signal output from the gate driver 28. The thin film transistor is driven by the scanning signal input to the gate electrode.
　ソースドライバ３０には、複数のソース線３４が接続されている。ソース線３４は、薄膜トランジスタのソース電極に接続されている。ソース線３４は、ソースドライバ３０から出力される表示信号を伝送する。薄膜トランジスタが駆動されているときに、表示信号が薄膜トランジスタに入力される。これにより、表示信号に応じた電荷が、薄膜トランジスタに接続された蓄積容量に蓄積される。蓄積容量は、画素電極と、画素電極に対向して配置された共通電極と、これらの電極間に位置する液晶層とによって構成される。画素電極は、アクティブマトリクス基板に形成されている。画素電極は、薄膜トランジスタのドレイン電極に接続されている。共通電極は、対向基板に形成されている。表示信号に応じた電荷が蓄積容量に蓄積されることにより、画素の階調が制御される。その結果、液晶パネル１６は、画像を表示することができる。 A plurality of source lines 34 are connected to the source driver 30. The source line 34 is connected to the source electrode of the thin film transistor. The source line 34 transmits a display signal output from the source driver 30. When the thin film transistor is driven, a display signal is input to the thin film transistor. Thereby, the electric charge according to the display signal is stored in the storage capacitor connected to the thin film transistor. The storage capacitor is composed of a pixel electrode, a common electrode disposed to face the pixel electrode, and a liquid crystal layer positioned between these electrodes. The pixel electrode is formed on the active matrix substrate. The pixel electrode is connected to the drain electrode of the thin film transistor. The common electrode is formed on the counter substrate. The gray scale of the pixel is controlled by accumulating charges corresponding to the display signal in the storage capacitor. As a result, the liquid crystal panel 16 can display an image.
　メガネ制御部２４は、立体視用メガネ１４における液晶シャッタ１４Ｌ，１４Ｒの開閉を制御する。メガネ制御部２４は、液晶シャッタ１４Ｌ，１４Ｒに駆動電圧を印加するドライバを含む。このドライバは、例えば、立体視用メガネ１４に設けられる。 The glasses controller 24 controls opening and closing of the liquid crystal shutters 14L and 14R in the stereoscopic glasses 14. The glasses controller 24 includes a driver that applies a driving voltage to the liquid crystal shutters 14L and 14R. This driver is provided in the stereoscopic glasses 14, for example.
　立体視用メガネ１４は、右眼用の液晶シャッタ１４Ｒと、左眼用の液晶シャッタ１４Ｌを備える。液晶シャッタ１４Ｒは、観察者が立体視用メガネ１４を装着した状態で、観察者の右眼前方に位置する。液晶シャッタ１４Ｌは、観察者が立体視用メガネ１４を装着した状態で、観察者の左眼前方に位置する。液晶シャッタ１４Ｒ，１４Ｌは、例えば、液晶パネルである。 The stereoscopic glasses 14 include a liquid crystal shutter 14R for the right eye and a liquid crystal shutter 14L for the left eye. The liquid crystal shutter 14 </ b> R is positioned in front of the viewer's right eye in a state where the viewer wears the stereoscopic glasses 14. The liquid crystal shutter 14L is positioned in front of the left eye of the observer in a state where the observer wears the stereoscopic glasses 14. The liquid crystal shutters 14R and 14L are, for example, liquid crystal panels.
　メガネ制御部２４は、液晶シャッタ１４Ｒ，１４Ｌを開閉する。液晶パネル１６が右眼用画像を表示しているときに、液晶シャッタ１４Ｒを開状態（光の透過状態）とし、液晶シャッタ１４Ｌを閉状態（光の非透過状態）とする。液晶パネル１６が左眼用画像を表示しているときに、液晶シャッタ１４Ｌを開状態（光の透過状態）とし、液晶シャッタ１４ａを閉状態（光の非透過状態）とする。 The glasses controller 24 opens and closes the liquid crystal shutters 14R and 14L. When the liquid crystal panel 16 displays the right-eye image, the liquid crystal shutter 14R is opened (light transmission state), and the liquid crystal shutter 14L is closed (light non-transmission state). When the liquid crystal panel 16 is displaying an image for the left eye, the liquid crystal shutter 14L is opened (light transmission state), and the liquid crystal shutter 14a is closed (light non-transmission state).
　ライト制御部２６は、バックライト１８の点灯を制御する。 The light control unit 26 controls the lighting of the backlight 18.
　図２～４を参照しながら、立体表示システム１０の動作について説明する。図２は、本実施形態の制御方法により、立体表示システムを制御する場合に、液晶シャッタを介して観察される光の強度を示すタイムチャートである。図３は、従来の制御方法１により、立体表示システム１０を制御する場合に、液晶シャッタを介して観察される光の強度を示すタイムチャートである。図４は、従来の制御方法２により、立体表示システム１０を制御する場合に、液晶シャッタを介して観察される光の強度を示すタイムチャートである。従来の制御方法１は、本実施形態の制御方法に比して、バックライト１８の点灯開始時期が異なる。従来の制御方法２は、本実施形態の制御方法２に比して、液晶シャッタ１４Ｌ，１４Ｒの開状態の期間が異なる。 The operation of the stereoscopic display system 10 will be described with reference to FIGS. FIG. 2 is a time chart showing the intensity of light observed through the liquid crystal shutter when the stereoscopic display system is controlled by the control method of the present embodiment. FIG. 3 is a time chart showing the intensity of light observed through the liquid crystal shutter when the stereoscopic display system 10 is controlled by the conventional control method 1. FIG. 4 is a time chart showing the intensity of light observed through the liquid crystal shutter when the stereoscopic display system 10 is controlled by the conventional control method 2. The conventional control method 1 differs in the lighting start time of the backlight 18 compared with the control method of this embodiment. The conventional control method 2 differs from the control method 2 of the present embodiment in the period during which the liquid crystal shutters 14L and 14R are open.
　パネル制御部２２は、表示領域１７の上から下に向かって、表示すべき立体視用画像の画像データを書き込む。パネル制御部２２が画像データを書き込む周波数は、１２０Ｈｚである。パネル制御部２２は、左眼用画像の画像データと右眼用画像の画像データとを交互に１回ずつ書き込む。これにより、表示領域１７には、左眼用画像と右眼用画像とが交互に１回ずつ表示される。 The panel control unit 22 writes the image data of the stereoscopic image to be displayed from the top to the bottom of the display area 17. The frequency at which the panel control unit 22 writes image data is 120 Hz. The panel control unit 22 writes the image data of the left eye image and the image data of the right eye image alternately once each. Accordingly, the left eye image and the right eye image are alternately displayed once in the display area 17.
　図２～４において、左眼用画像は表示領域１７の全面が白色の画像（白画像）であり、右眼用画像は表示領域１７の全面が黒色の画像（黒画像）である。図２～４には、表示領域１７における液晶の透過率を示すタイムチャートが示されている。液晶の透過率は、表示領域１７の最上部、中央部及び最下部のそれぞれについて示されている。図２～４に示すように、何れの部分においても、液晶の透過率は緩やかに変化する。 2 to 4, the left eye image is a white image (white image) of the entire display area 17, and the right eye image is a black image (black image) of the entire display area 17. 2 to 4 show time charts showing the transmittance of the liquid crystal in the display region 17. The transmittance of the liquid crystal is shown for each of the uppermost part, the central part and the lowermost part of the display area 17. As shown in FIGS. 2 to 4, the transmissivity of the liquid crystal changes gradually in any part.
　図２に示すように、本実施形態では、メガネ制御部２４は、表示領域１７における中央部分の液晶が所定の透過率に到達するタイミングで、液晶シャッタ１４Ｌ，１４Ｒに駆動電圧を印加する。ここで、液晶シャッタ１４Ｌ，１４Ｒにおける液晶の動作モードは、ＴＮモードである。液晶分子の応答速度は遅いので、図２～４に示すように、液晶シャッタ１４Ｌ，１４Ｒの透過率は直ぐには高くならない。 As shown in FIG. 2, in the present embodiment, the glasses controller 24 applies a driving voltage to the liquid crystal shutters 14 </ b> L and 14 </ b> R at a timing when the liquid crystal at the central portion in the display region 17 reaches a predetermined transmittance. Here, the operation mode of the liquid crystal in the liquid crystal shutters 14L and 14R is the TN mode. Since the response speed of the liquid crystal molecules is slow, the transmittance of the liquid crystal shutters 14L and 14R does not increase immediately as shown in FIGS.
　図２に示すように、本実施形態では、ライト制御部２６は、メガネ制御部２４が液晶シャッタ１４Ｌ，１４Ｒに対する駆動電圧の印加を開始した後に、バックライト１８を全面点灯する。 As shown in FIG. 2, in this embodiment, the light control unit 26 turns on the entire backlight 18 after the glasses control unit 24 starts applying the driving voltage to the liquid crystal shutters 14L and 14R.
　ここで、図２，３を参照して、本実施形態の制御方法を採用した場合と、従来の制御方法１を採用した場合とを比較する。図２，３には、液晶シャッタ１４Ｌ，１４Ｒを介して表示領域１７を見る場合の光強度を示すタイムチャートが示されている。図３において、ハッチングを付した箇所は、本実施形態の制御方法を採用した場合と、従来の制御方法１を採用した場合との相違点を示す。 Here, with reference to FIGS. 2 and 3, the case where the control method of the present embodiment is adopted is compared with the case where the conventional control method 1 is adopted. 2 and 3 are time charts showing the light intensity when viewing the display region 17 through the liquid crystal shutters 14L and 14R. In FIG. 3, hatched portions indicate differences between the case where the control method of the present embodiment is employed and the case where the conventional control method 1 is employed.
　図３に示すように、従来の制御方法１においては、液晶シャッタ１４Ｌ，１４Ｒの透過率が上昇し始めるタイミング（メガネ制御部２４が液晶シャッタ１４Ｌ，１４Ｒに駆動電圧を印加するタイミング）で、バックライト１８が点灯する。この場合、図３に示すように、観察者の左眼には、初期の段階で、本来の光強度よりも低い光強度を有する画像が見える。また、観察者の右眼には、本来見えるべきではない画像が見える。つまり、観察者の右眼では、漏れ光が観察される。この漏れ光は、液晶パネル１６において、液晶分子の応答速度が遅いことによる。本来なら、液晶シャッタ１４Ｒに駆動電圧が印加されるときには、液晶パネル１６において白画像の表示は終了している。しかしながら、液晶パネル１６において、液晶分子の応答性が悪いために、白画像から黒画像に変化しているのが見えてしまう。特に、表示領域１７の下側領域において、白画像から黒画像に変化するのが見えてしまう。その結果、クロストークが発生する。 As shown in FIG. 3, in the conventional control method 1, the back of the liquid crystal shutters 14 </ b> L and 14 </ b> R starts to increase in transmittance (timing when the glasses controller 24 applies the drive voltage to the liquid crystal shutters 14 </ b> L and 14 </ b> R). The light 18 is turned on. In this case, as shown in FIG. 3, an image having a light intensity lower than the original light intensity can be seen in the left eye of the observer at an early stage. In addition, an image that should not be seen is seen in the right eye of the observer. That is, leakage light is observed with the right eye of the observer. This leakage light is due to the slow response speed of the liquid crystal molecules in the liquid crystal panel 16. Originally, when the drive voltage is applied to the liquid crystal shutter 14R, the display of the white image is finished on the liquid crystal panel 16. However, in the liquid crystal panel 16, since the response of the liquid crystal molecules is poor, it can be seen that the white image is changed to the black image. In particular, in the lower area of the display area 17, it can be seen that the white image changes to the black image. As a result, crosstalk occurs.
　図２に示すように、本実施形態の制御方法を採用すれば、図３に示すハッチング箇所がなくなる。そのため、観察者の左眼には、初期の段階で、本来の光強度に近い光強度を有する画像が見える。また、観察者の右眼には、本来見えるべきではない画像が見え難くなっている。つまり、観察者の右眼では、漏れ光が観察され難くなる。その結果、クロストークが抑えられる。 As shown in FIG. 2, if the control method of this embodiment is adopted, the hatched portion shown in FIG. 3 is eliminated. Therefore, an image having a light intensity close to the original light intensity can be seen in the left eye of the observer at an early stage. Also, it is difficult for the viewer's right eye to see an image that should not be seen. That is, it is difficult for the observer's right eye to observe leaked light. As a result, crosstalk is suppressed.
　特に本実施形態では、液晶シャッタ１４Ｌ，１４Ｒの透過率が８０％以上に到達したときに、ライト制御部２６がバックライト１８を全面点灯する。そのため、クロストークが更に抑えられる。 Particularly in this embodiment, when the transmittance of the liquid crystal shutters 14L and 14R reaches 80% or more, the light control unit 26 turns on the backlight 18 on the entire surface. Therefore, crosstalk is further suppressed.
　図２に示すように、本実施形態では、ライト制御部２６は、メガネ制御部２４が液晶シャッタ１４Ｌ，１４Ｒに対する駆動電圧の印加を開始した後に、バックライト１８を全面点灯し、メガネ制御部２４が液晶シャッタ１４Ｌ，１４Ｒに対する駆動電圧の印加を終了した後に、バックライト１８を消灯する。 As shown in FIG. 2, in the present embodiment, the light control unit 26 turns on the backlight 18 after the glasses control unit 24 starts applying the driving voltage to the liquid crystal shutters 14 </ b> L and 14 </ b> R, and the glasses control unit 24. After the application of the driving voltage to the liquid crystal shutters 14L and 14R is finished, the backlight 18 is turned off.
　ここで、図２，４を参照しながら、本実施形態の制御方法を採用した場合と、従来の制御方法２を採用した場合とを比較する。図２，４に示すように、本実施形態の制御方法を採用すると、従来の制御方法２を採用する場合に比して、液晶シャッタ１４Ｌ，１４Ｒに駆動電圧が印加されている期間よりも、バックライト１８の点灯期間が短い。そのため、例えば、明るい室内等で立体画像を観察者に見せた場合に、明るい立体画像を観察者に見せることができる。 Here, referring to FIGS. 2 and 4, the case where the control method of the present embodiment is adopted is compared with the case where the conventional control method 2 is adopted. As shown in FIGS. 2 and 4, when the control method of the present embodiment is adopted, compared with the case where the conventional control method 2 is adopted, the period when the drive voltage is applied to the liquid crystal shutters 14 </ b> L and 14 </ b> R is more than The lighting period of the backlight 18 is short. Therefore, for example, when a stereoscopic image is shown to the observer in a bright room or the like, the bright stereoscopic image can be shown to the observer.
　これについて、もう少し具体的に説明する。例えば、表示領域１７の周囲に白壁がある場合を考える。液晶シャッタ１４Ｌ，１４Ｒを介して、表示領域１７と、その周囲の白壁とが見えるとする。従来の制御方法２を採用すると、表示領域１７よりも白壁のほうが明るく見える。本実施形態の制御方法を採用すれば、白壁よりも表示領域１７のほうが明るく見える。したがって、本実施形態の制御方法を採用すれば、従来の制御方法２を採用する場合に比して、観察者は立体画像を明るく感じる。 This will be explained more concretely. For example, consider a case where there is a white wall around the display area 17. It is assumed that the display area 17 and the surrounding white wall can be seen through the liquid crystal shutters 14L and 14R. When the conventional control method 2 is adopted, the white wall looks brighter than the display area 17. If the control method of this embodiment is employ | adopted, the display area 17 will appear brighter than a white wall. Therefore, if the control method of the present embodiment is employed, the observer feels a stereoscopic image brighter than when the conventional control method 2 is employed.
　［応用例］
　例えば、上記の実施形態において、パネル制御部２２は、同じ画像を２回連続して表示領域１７に表示してもよい。この場合、メガネ制御部２４は、パネル制御部２２が２回目に画像を表示するときに、液晶シャッタ１４Ｌ，１４Ｒに対する駆動電圧の印加を開始する。このようにすれば、本来見えるべきでない画像が更に見え難くなる。そのため、クロストークが更に軽減する。 [Application example]
For example, in the above embodiment, the panel control unit 22 may display the same image in the display area 17 twice in succession. In this case, when the panel control unit 22 displays an image for the second time, the glasses control unit 24 starts applying a driving voltage to the liquid crystal shutters 14L and 14R. In this way, an image that should not be originally visible becomes more difficult to see. Therefore, crosstalk is further reduced.
　以上、本発明の実施形態について、詳述してきたが、これらはあくまでも例示であって、本発明は、上述の実施形態によって、何等、限定されない。 As mentioned above, although embodiment of this invention has been explained in full detail, these are illustrations to the last and this invention is not limited at all by the above-mentioned embodiment.

Claims (3)

  1. 　表示領域を有する液晶パネルと、
    　前記液晶パネルにおいて、右眼用及び左眼用の画像を切替表示するパネル制御部と、
    　右眼用及び左眼用の液晶シャッタを有する立体視用メガネと、
    　前記液晶パネルにおける画像の切替周期と同期して、前記液晶シャッタの開閉を制御するメガネ制御部と、
    　前記液晶パネルの後方に配置され、前記表示領域の全体を照明するバックライトと、
    　前記バックライトの点灯状態を制御するライト制御部とを備え、
    　前記ライト制御部は、
    　前記メガネ制御部が前記液晶シャッタに対する駆動電圧の印加を開始した後で、前記バックライトを点灯することにより、前記表示領域の全体を照明し、
    　前記メガネ制御部が前記液晶シャッタに対する駆動電圧の印加を終了した後で、前記バックライトを消灯する、立体表示システム。     A liquid crystal panel having a display area;
    In the liquid crystal panel, a panel controller for switching and displaying images for the right eye and the left eye;
    Stereoscopic glasses having right-eye and left-eye liquid crystal shutters;
    A glasses controller that controls opening and closing of the liquid crystal shutter in synchronization with an image switching period in the liquid crystal panel;
    A backlight disposed behind the liquid crystal panel and illuminating the entire display area;
    A light control unit for controlling the lighting state of the backlight,
    The light control unit
    After the glasses controller starts applying the driving voltage to the liquid crystal shutter, the entire display area is illuminated by turning on the backlight.
    A stereoscopic display system in which the backlight is turned off after the glasses controller finishes applying the driving voltage to the liquid crystal shutter.
  2. 　請求項１に記載の立体表示システムであって、
    　前記ライト制御部は、
    　前記メガネ制御部が前記液晶シャッタに対する駆動電圧の印加を開始した後であって、且つ、前記液晶シャッタの透過率が８０％以上になった後で、前記バックライトを点灯する、立体表示システム。     The stereoscopic display system according to claim 1,
    The light control unit
    A stereoscopic display system in which the backlight is turned on after the glasses controller starts applying a driving voltage to the liquid crystal shutter and the transmittance of the liquid crystal shutter becomes 80% or more.
  3. 　請求項１又は２に記載の立体表示システムであって、
    　前記パネル制御部は同じ画像を２回連続して前記表示領域に表示し、
    　前記メガネ制御部は、前記パネル制御部が２回目に画像を表示するときに、前記液晶シャッタに対する駆動電圧の印加を開始する、立体表示システム。     The stereoscopic display system according to claim 1 or 2,
    The panel control unit displays the same image twice in succession in the display area,
    The glasses control unit is a stereoscopic display system that starts applying a driving voltage to the liquid crystal shutter when the panel control unit displays an image for the second time.
PCT/JP2012/080699 2011-11-30 2012-11-28 Stereoscopic display system WO2013080990A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-261318 2011-11-30
JP2011261318A JP2015034831A (en) 2011-11-30 2011-11-30 Stereoscopic display system

Publications (1)

Publication Number Publication Date
WO2013080990A1 true WO2013080990A1 (en) 2013-06-06

Family

ID=48535441

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/080699 WO2013080990A1 (en) 2011-11-30 2012-11-28 Stereoscopic display system

Country Status (2)

Country Link
JP (1) JP2015034831A (en)
WO (1) WO2013080990A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015100806A1 (en) * 2013-12-30 2015-07-09 深圳市华星光电技术有限公司 Three-dimensional liquid crystal display device, shutter glasses, and shutter glasses control method
US9513507B2 (en) 2013-12-30 2016-12-06 Shenzhen China Star Optoelectronics Technology Co., Ltd. Three-dimensional liquid crystal display device, and shutter glass and control method for the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011211753A (en) * 2011-06-30 2011-10-20 Sony Corp Image display apparatus, image display observation system and image display method
JP2011216998A (en) * 2010-03-31 2011-10-27 Sony Corp Image display device, image display system, image presenting method, and computer program

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011216998A (en) * 2010-03-31 2011-10-27 Sony Corp Image display device, image display system, image presenting method, and computer program
JP2011211753A (en) * 2011-06-30 2011-10-20 Sony Corp Image display apparatus, image display observation system and image display method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015100806A1 (en) * 2013-12-30 2015-07-09 深圳市华星光电技术有限公司 Three-dimensional liquid crystal display device, shutter glasses, and shutter glasses control method
US9513507B2 (en) 2013-12-30 2016-12-06 Shenzhen China Star Optoelectronics Technology Co., Ltd. Three-dimensional liquid crystal display device, and shutter glass and control method for the same

Also Published As

Publication number Publication date
JP2015034831A (en) 2015-02-19

Similar Documents

Publication Publication Date Title
US8970682B2 (en) 3 dimensional image display device and method of driving the same
US20190238828A1 (en) Method, apparatus and system for mitigating image crosstalk
US8564646B2 (en) Image display apparatus, image display observation system, and image display method
US8988510B2 (en) 3D image display device
US20110292040A1 (en) Stereoscopic display system
US10102811B2 (en) Method of displaying three-dimensional image and display apparatus using the same
KR20120002922A (en) Stereoscopic display device and display drive circuit
JP2012103400A (en) Stereoscopic display device, and display method of stereoscopic display device
JP2013529309A (en) Suppression of crosstalk in time sequential liquid crystal stereoscopic display system
US8854440B2 (en) Three dimensional image display device and a method of driving the same
US20110032343A1 (en) Liquid crystal shutter device and picture display system
WO2013080990A1 (en) Stereoscopic display system
US9202402B2 (en) Three-dimensional image display device and driving method thereof
US8780286B2 (en) Three dimensional image display device
US8928739B2 (en) Three dimensional image display device
WO2013038883A1 (en) Stereoscopic image display device, and drive method of stereoscopic image display device
JP2013251792A (en) Liquid crystal display device
US20220208041A1 (en) Three-dimensional-image display device
WO2012053425A1 (en) Stereoscopic display system
US20120299984A1 (en) Display device and displaying method
JP2013064919A (en) Electrooptic device and electronic apparatus
KR101882937B1 (en) Stereoscopic image display device and driving method thereof
WO2012056945A1 (en) Three-dimensional display system
JP2015038559A (en) Drive circuit, display device, electronic equipment, and drive method

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12852921

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12852921

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP