WO2013038883A1 - Dispositif d'affichage d'image stéréoscopique et procédé de commande de dispositif d'affichage d'image stéréoscopique - Google Patents

Dispositif d'affichage d'image stéréoscopique et procédé de commande de dispositif d'affichage d'image stéréoscopique Download PDF

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Publication number
WO2013038883A1
WO2013038883A1 PCT/JP2012/071234 JP2012071234W WO2013038883A1 WO 2013038883 A1 WO2013038883 A1 WO 2013038883A1 JP 2012071234 W JP2012071234 W JP 2012071234W WO 2013038883 A1 WO2013038883 A1 WO 2013038883A1
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Prior art keywords
eye
shutter
liquid crystal
display device
image
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PCT/JP2012/071234
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English (en)
Japanese (ja)
Inventor
暎 冨吉
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シャープ株式会社
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Publication of WO2013038883A1 publication Critical patent/WO2013038883A1/fr

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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
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
    • G09G3/003—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background to produce spatial visual effects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
    • H04N13/106—Processing image signals
    • H04N13/144—Processing image signals for flicker reduction
    • 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 image display device and a driving method of the stereoscopic image display device.
  • an active shutter method is generally used.
  • the transmission state of the right-eye liquid crystal shutter and the left-eye liquid crystal shutter of the stereoscopic (3D) glasses that is, ON (on) ) State and OFF (off) state are sequentially switched.
  • the user can appreciate a stereoscopic image by the parallax between the right eye and the left eye.
  • FIG. 7 is a diagram for explaining opening and closing timings of the liquid crystal shutter for the right eye and the liquid crystal shutter for the left eye of general 3D glasses.
  • the left-eye image is incident only on the user's left eye
  • the right-eye image is incident only on the user's right eye.
  • the user can visually recognize the stereoscopic image.
  • the cycle of opening / closing the 3D glasses is also increased.
  • the frequency is about 60 Hz, and the flicker is easy to see.
  • Patent Documents 1 and 2 disclose a stereoscopic video reproduction system that controls opening and closing of a liquid crystal shutter using a blanking period.
  • FIG. 8 is a diagram showing a state of driving the stereoscopic video reproduction system of Patent Document 1.
  • each liquid crystal shutter is temporarily closed even if the scanning period, which is the blanking period, is a transmission period of the right-eye and left-eye liquid crystal shutters.
  • Patent Document 3 discloses a display system provided with a blinking cycle detecting means for detecting a blinking cycle of illumination light that is external light blinking at a cycle of a commercial power supply frequency.
  • Japanese Patent Publication Japanese Patent Laid-Open No. 64-86694 (published on March 31, 1989)” Japanese Patent Publication “JP 9-138384 A (published May 27, 1997)” International Patent Publication “WO2008 / 056753 Publication (May 15, 2008 International Publication)”
  • the present invention has been made to solve the above-described problems, and an object thereof is to prevent an increase in manufacturing cost and reliably reduce flicker without depending on the blanking period. .
  • a stereoscopic image display device includes a display device that displays one stereoscopic image by sequentially displaying a first-eye image and a second-eye image; A first eye shutter that is in a transmissive state when the display device displays the first eye image, and a second eye shutter that is in a transmissive state when the display device displays the second eye image; A shutter control unit that generates a shutter drive signal for driving the first and second shutters, and controls the driving of the first and second shutters according to the generated shutter drive signal, Of the shutter driving signals, the frequency representing the period of information indicating that the first or second shutter is switched from the transmission state to the light shielding state is a light shielding frequency M, and the first eye image and the second eye image are displayed.
  • N (2x + 1) ⁇ N.
  • a driving method of a stereoscopic image display device is a display device that displays one stereoscopic image by sequentially displaying a first eye image and a second eye image.
  • a first eye shutter that is in a transmissive state when the display device displays the first eye image
  • a second eye that is in a transmissive state when the display device displays the second eye image.
  • a stereoscopic image display device comprising: a shutter frequency M, a frequency representing a cycle of switching the first or second shutter for shutter from a transmission state to a light shielding state as a light shielding frequency M, and the first eye
  • the first eye shutter is in the transmissive state when the first eye image is displayed by the shutter drive signal generated by the shutter control unit, and the second eye is displayed when the second eye image is displayed.
  • the shutter is in a transmissive state. Accordingly, the first eye image can be incident on the first eye of the user and the second eye image can be incident on the second eye of the user, so that the user can visually recognize the stereoscopic image.
  • the frequency representing the period of information for switching the first or second eye shutter from the transmission state to the light shielding state is defined as a light shielding frequency M, and the first eye image and the second eye.
  • M (2x + 1) ⁇ N where the frame frequency is N when the images for the image are combined and the natural number is x.
  • the shading frequency M is larger than the frame frequency N.
  • each of the first and second shutters is repeatedly opened and closed faster than the frame rate.
  • flicker caused by a frequency component lower than the frame rate can be suppressed.
  • flicker caused by high frequency components in outside light is generally difficult for human eyes to feel.
  • flicker can be reduced.
  • M is larger than N, and it is not necessary to synchronize with the frequency of the commercial power supply as in the technique described in Patent Document 3. For this reason, means for constantly monitoring the period of the external light is not necessary, and an increase in manufacturing cost can be prevented.
  • the first eye shutter is sequentially transmitted to cause the first eye image to enter the user's first eye, and the second eye shutter is transmitted.
  • the second eye image can be incident on the user's second eye.
  • the stereoscopic image display device sequentially displays a first eye image and a second eye image, thereby displaying one stereoscopic image, and the display device includes the first eye image.
  • a first eye shutter that is in a transmissive state when displaying the image
  • a second eye shutter that is in a transmissive state when the display device displays the second eye image
  • the first and second eye shutters A shutter control unit configured to generate a shutter drive signal for driving the shutter, and to control driving of the first and second shutters according to the generated shutter drive signal;
  • the frequency representing the period of information indicating that the second shutter is switched from the transmission state to the light shielding state is the light shielding frequency M and the first eye image and the second eye image are combined into one frame.
  • the first eye image and the second eye image are sequentially displayed to display one stereoscopic image, and the display device includes the first image.
  • a stereoscopic apparatus including a first eye shutter that is in a transmissive state when displaying an eye image, and a second shutter that is in a transmissive state when the display device displays the second eye image.
  • a driving method of the image display device wherein a frequency representing a cycle of switching the first or second eye shutter from a transmission state to a light shielding state is defined as a light shielding frequency M, and the first eye image and the second eye image.
  • FIG. 2 is a schematic diagram showing the configuration of the stereoscopic image display device 1 of the present invention.
  • the stereoscopic image display device 1 includes a liquid crystal display device (display device) 2 and 3D glasses 20.
  • the liquid crystal display device 2 includes a liquid crystal panel LCP, a backlight BL, and a drive control unit 10.
  • the drive control unit 10 acquires a video signal from the outside, and performs drive control of each of the liquid crystal panel LCP, the backlight BL, and the 3D glasses 20 based on the acquired video signal.
  • the liquid crystal panel LCP is a liquid crystal panel capable of displaying a stereoscopic (3D) image or a planar (2D) image.
  • the liquid crystal panel LCP includes an image display area 3, a gate driver GD, and a source driver SD.
  • a plurality of gate wirings Gi arranged in parallel to each other and a plurality of source wirings Sj arranged in parallel to each other are arranged so as to intersect each other.
  • a region partitioned by the gate wiring Gi and the source wiring Sj is a pixel P.
  • the pixels P are arranged in a matrix in the image display area 3.
  • the gate driver GD is arranged along the left side of the image display area 3.
  • the gate driver GD drives each gate line Gi based on the gate driver drive signal GS output from the drive control unit 10.
  • the source driver SD is arranged along the upper side of the image display area 3.
  • the source driver SD drives each source line Sj based on the source driver drive signal SS from the drive control unit 10.
  • an active substrate on which a TFT element and a pixel electrode as a switching element are arranged for each pixel P, and a counter substrate on which a color filter and a common electrode are arranged are opposed to each other through a liquid crystal. Configured.
  • the gate driver GD and the source driver SD sequentially scan the pixels to apply a voltage corresponding to a necessary gradation to the pixel electrode of each pixel P.
  • the liquid crystal in each pixel P is driven, and the transmission state of each pixel P is controlled, so that a desired image is displayed (written).
  • the backlight BL illuminates the image display area 3 of the liquid crystal panel LCP from the back side. Since the liquid crystal is not a self-luminous element, it is necessary to use the backlight BL as a light source and illuminate the liquid crystal panel LCP from behind in order to make the user visually confirm the image.
  • the backlight BL is turned on or off based on the backlight drive signal BLS output from the drive control unit 10.
  • the light emitted from the backlight BL passes through each pixel P. Thereby, the user can visually recognize the image displayed in the image display area 3.
  • the backlight BL can be configured by arranging a plurality of LEDs, but is not particularly limited thereto.
  • the 3D glasses 20 are light shielding devices for shielding incident light to the user's right eye or left eye according to the 3D image displayed on the liquid crystal panel LCP. Thereby, the 3D glasses 20 can make the user stereoscopically view the 3D image displayed on the liquid crystal panel LCP.
  • the 3D glasses 20 include a right-eye liquid crystal shutter 21 (second eye shutter, first eye shutter) for blocking incident light on the user's right eye (second eye, first eye), and the user's left eye. And a left-eye liquid crystal shutter 22 (first-eye shutter, second-eye shutter) for blocking incident light on the first eye and the second eye.
  • a right-eye liquid crystal shutter 21 second eye shutter, first eye shutter
  • a left-eye liquid crystal shutter 22 first-eye shutter, second-eye shutter
  • the liquid crystal shutter 21 for the right eye and the liquid crystal shutter 22 for the left eye are switched between a transmission state (open state) and a light shielding state (closed state) in synchronization with the 3D image displayed on the liquid crystal panel LCP.
  • the 3D glasses 20 Based on the 3D glasses signal MS output from the drive control unit 10, the 3D glasses 20 sets each of the liquid crystal shutters 21 and 22 to a transmissive state (open state) or a light shielding state (closed state).
  • FIG. 3 is a block diagram showing the configuration of the stereoscopic image display apparatus 1.
  • the drive control unit 10 includes an image signal generation unit 11, a liquid crystal panel signal generation unit 12, a backlight signal generation unit 13, and a 3D glasses signal generation unit 14.
  • the 3D glasses signal generator 14 includes a shutter frequency setting unit 14a.
  • the 3D glasses 20 include a shutter control unit 23, shutter drive units 24 and 25, and liquid crystal shutters 21 and 22.
  • the image signal generator 11 receives a video signal for stereoscopic image display from the outside. Then, based on the received video signal such as a vertical synchronization signal, various synchronization signals for gray-scale image display, gradation signals, and an image to be displayed on the liquid crystal panel LCP are left-eye images (first-eye images). , Second-eye image) or right-eye image (second-eye image, first-eye image). Frame frequency information) and the like.
  • the image signal generator 11 outputs the generated signal to the liquid crystal panel signal generator 12, the backlight signal generator 13, and the 3D glasses signal generator 14.
  • one frame is an image for displaying one stereoscopic image. That is, the frame frequency is a period of a stereoscopic image.
  • One stereoscopic image includes a left-eye image and a right-eye image that are sequentially displayed.
  • the liquid crystal panel signal generation unit 12 is for controlling the driving of the liquid crystal panel LCP based on various signals acquired from the image signal generation unit 11.
  • the liquid crystal panel signal generation unit 12 When the liquid crystal panel signal generation unit 12 acquires various signals from the image signal generation unit 11, the liquid crystal panel signal generation unit 12 generates a source driver drive signal SS and a gate driver drive signal GS as image write signals. Then, the liquid crystal panel signal generator 12 outputs the generated source driver drive signal SS to the source driver SD, and outputs the gate driver drive signal GS to the gate driver GD. Thereby, the liquid crystal panel signal generation unit 12 controls the driving of the liquid crystal panel LCP.
  • the backlight signal generation unit 13 is based on various signals acquired from the image signal generation unit 11, information indicating a light shielding frequency (described later) acquired from the 3D glasses signal generation unit 14, and the like. This is for controlling the drive.
  • the backlight signal generation unit 13 acquires various signals from the image signal generation unit 11, and information indicating the light shielding frequency (described later) and information indicating the period of the transmission state from the 3D glasses signal generation unit 14. Upon acquisition, a backlight drive signal BLS, which is a drive signal for turning on and off the backlight BL, is generated and output to the backlight BL. Thereby, the backlight signal generator 13 controls the driving of the backlight BL.
  • a backlight drive signal BLS which is a drive signal for turning on and off the backlight BL
  • the 3D glasses signal generation unit 14 is for controlling the driving of the 3D glasses 20 based on various signals acquired from the image signal generation unit 11.
  • the 3D glasses signal generation unit 14 includes a shutter frequency setting unit 14a.
  • the shutter frequency setting unit 14a sets a light shielding frequency that is a frequency for switching each of the liquid crystal shutters 21 and 22 from the transmission state (open state) to the light shielding state (closed state), a period of the transmission state, and the like.
  • the 3D glasses signal generation unit 14 acquires various signals such as a synchronization signal, left and right image identification signals, and information indicating a frame frequency from the image signal generation unit 11.
  • the shutter frequency setting unit 14a obtains the liquid crystal shutters 21 and 22 from the transmission state to the light shielding state (closed) from the frame frequency indicated by the information indicating the frame frequency. Set the shading frequency that is the frequency to switch to (status).
  • the shutter frequency setting unit 14a sets the light shielding frequency M as follows.
  • the shutter frequency setting unit 14a sets the shutter frequency so as to be an odd multiple of the frame frequency (which is an integer and excludes 1).
  • the natural number x may be recorded in advance in the shutter frequency setting unit 14a, or may be set by the user, for example.
  • the shutter frequency setting unit 14a sets a transmission state period (time length) that is a period for holding the transmission state of each of the liquid crystal shutters 21 and 22.
  • the period during which the liquid crystal shutters 21 and 22 are kept transmissive may be stored in advance in the shutter frequency setting unit 14a or may be set by user input.
  • the period showing the transmission state is t, it is about in the range of (1 / 2M) ⁇ t ⁇ (1 / M). Note that the range of t is not limited to this.
  • the 3D glasses signal generation unit 14 includes various synchronization signals acquired from the image signal generation unit 11, left and right image identification signals, information indicating the frame frequency, and information indicating the shutter frequency set by the shutter frequency setting unit 14a. From the information indicating the period of the transmission state, the 3D glasses signal MS indicating the timing for opening and closing the liquid crystal shutters 21 and 22 is generated.
  • the 3D glasses signal MS includes information indicating the frame frequency, information indicating the shutter frequency, and information indicating the period of the transmission state.
  • the 3D glasses signal generation unit 14 outputs the generated 3D glasses signal MS to the shutter control unit 23, and also backs information indicating the shutter frequency set by the shutter frequency setting unit 14a and information indicating the period of the transmission state. Output to the write signal generator 13.
  • the shutter frequency setting unit 14a is not necessarily provided in the drive control unit 10, and may be provided on the 3D glasses 20 side.
  • the shutter controller 23 is for controlling the drive of the liquid crystal shutter 21 for the right eye and the liquid crystal shutter 22 for the left eye based on the 3D glasses signal MS acquired from the 3D glasses signal generator 14.
  • the shutter control unit 23 uses the information indicating the shutter frequency of the 3D glasses signal MS, the information indicating the period of the transmission state, and the like for the right eye.
  • a liquid crystal shutter driving signal (shutter driving signal, second shutter driving signal, first eye) having information indicating that the liquid crystal shutter 21 is switched from the light shielding state to the transmission state and information indicating switching from the transmission state to the light shielding state.
  • a liquid crystal shutter drive signal (shutter drive signal, RS), information indicating that the liquid crystal shutter 22 for the left eye is switched from the light shielding state to the transmission state, and information indicating the switching from the transmission state to the light shielding state.
  • the first shutter driving signal for the first eye and the second shutter driving signal for the second eye) LS are generated.
  • the shutter control unit 23 outputs the generated liquid crystal shutter drive signal RS to the shutter drive unit 24, and controls the shutter drive unit 24 to drive the liquid crystal shutter 21.
  • the shutter control unit 23 outputs the generated liquid crystal shutter drive signal LS for the left eye to the shutter drive unit 25 and causes the shutter drive unit 25 to control driving of the liquid crystal shutter 22.
  • the shutter driving unit 24 generates a liquid crystal driving voltage indicated by the liquid crystal shutter driving signal RS acquired from the shutter control unit 23, and drives the liquid crystal of the liquid crystal shutter 21 by the generated liquid crystal driving voltage. Thereby, the transmission (open) state and the light shielding (closed) state of the liquid crystal shutter 21 are controlled.
  • the shutter driving unit 25 generates a liquid crystal driving voltage indicated by the liquid crystal shutter driving signal LS acquired from the shutter control unit 23, and drives the liquid crystal of the liquid crystal shutter 22 by the generated liquid crystal driving voltage. Thereby, the transmission (open) state and the light shielding (closed) state of the liquid crystal shutter 22 are controlled.
  • FIG. 1 is a diagram for explaining a display operation of the stereoscopic image display device 1.
  • FIG. 1A shows the operating state of the stereoscopic image display device
  • FIG. 1B shows the operating state of the backlight BL
  • FIG. 1C shows the liquid crystal shutter driving signal and the liquid crystal for the left eye.
  • the shutter driving state is shown
  • (d) shows the liquid crystal shutter driving signal for the right eye and the driving state of the liquid crystal shutter.
  • one stereoscopic image includes a left eye image (first eye image, second eye image) and a right eye image (second eye image, first eye image).
  • One stereoscopic image is defined as one frame.
  • the frame frequency in this case is N (Hz).
  • the frame frequency N (Hz) 60 (Hz). That is, the length of one frame is 1/60 (second).
  • the period of each of the left-eye image and the right-eye image per frame is twice the frame frequency.
  • the frequency of the left-eye image and the frequency of the right-eye image per frame are 120 (Hz), respectively.
  • the backlight BL is turned off and on in each of the period in which the left-eye image is displayed and the period in which the right-eye image is displayed.
  • the user can view the left-eye image displayed on the liquid crystal panel LCP only during the period in which the backlight BL is lit. .
  • the user can visually recognize the right-eye image displayed on the liquid crystal panel LCP only during the period when the backlight BL is lit. Can do.
  • the backlight signal generation unit 13 performs a plurality of times in the display period of the left-eye image, and within the period in which the left-eye liquid crystal shutter 22 is opened, which is the last open period. Therefore, the backlight drive signal BLS is generated so as to turn on the backlight BL, and is output to the backlight BL.
  • the backlight BL obtained from the backlight drive signal BLS from the backlight signal generation unit 13 is generated by the left-eye liquid crystal shutter 22 that is opened multiple times during the left-eye image display period during the left-eye image display period. It is lit only during the last open period of the open period (period showing the transmission state). The backlight BL is turned off during other periods of the left-eye image display period.
  • the backlight signal generation unit 13 opens the right eye liquid crystal shutter 21 that is opened a plurality of times during the right eye image display period (a period indicating a transmission state).
  • the backlight drive signal BLS is generated so as to turn on the backlight BL only during the last open period, and is output to the backlight BL.
  • the backlight BL obtained from the backlight signal generation unit 13 of the backlight drive signal BLS is generated by the right-eye liquid crystal shutter 21 that is opened a plurality of times during the right-eye image display period during the right-eye image display period. Lights only during the last open period of the open period. The backlight BL is extinguished during other periods of the right-eye image display period.
  • the shutter control unit 23 generates a left-eye liquid crystal shutter driving signal LS and a right-eye liquid crystal shutter driving signal LS from the 3D glasses signal MS acquired from the 3D glasses signal generation unit 14.
  • a liquid crystal shutter driving signal RS is generated.
  • the shutter control unit 23 outputs the liquid crystal shutter drive signal LS and the right-eye liquid crystal shutter drive signal RS to the shutter drive units 25 and 24, respectively, thereby driving the liquid crystal shutters 22 and 21 to open and close.
  • the liquid crystal shutter drive signal LS and the right-eye liquid crystal shutter drive signal RS indicate that the liquid crystal shutters 22 and 21 are closed (light-shielded) at low (L) (information indicating the light-shielded state), respectively.
  • (H) indicates that the liquid crystal shutters 22 and 21 are opened (transmitted) (information indicating the transmitted state).
  • the rise from low to high is information indicating that the liquid crystal shutter 22 or the liquid crystal shutter 21 is switched from the light shielding state to the transmission state. .
  • the liquid crystal shutter driving signal LS and the right-eye liquid crystal shutter driving signal RS information indicating that the falling from high to low switches the liquid crystal shutter 22 or the liquid crystal shutter 21 from the transmission state to the light shielding state. is there.
  • the shutter driving unit 25 When the shutter driving unit 25 acquires the liquid crystal shutter driving signal LS for low, the shutter driving unit 25 applies a liquid crystal driving voltage to the liquid crystal shutter 22 in a closed (light-shielded) state. As a result, the liquid crystal shutter 22 is in a closed (light-shielded) state.
  • the shutter driving unit 25 acquires the high liquid crystal shutter driving signal LS, the shutter driving unit 25 applies a liquid crystal driving voltage for opening (transmitting) the liquid crystal shutter 22. As a result, the liquid crystal shutter 22 is in an open (transmission) state.
  • the shutter driving unit 24 When the shutter driving unit 24 acquires the liquid crystal shutter driving signal RS, the shutter driving unit 24 applies a liquid crystal driving voltage to the liquid crystal shutter 21 in a closed (light-shielded) state. As a result, the liquid crystal shutter 21 is in a closed (light-shielded) state.
  • the shutter drive unit 24 when acquiring the high liquid crystal shutter drive signal RS, the shutter drive unit 24 applies a liquid crystal drive voltage that is in an open (transmission) state to the liquid crystal shutter 21. As a result, the liquid crystal shutter 21 is in an open (transmitted) state.
  • the liquid crystal shutter driving signal LS is repeatedly opened and closed a plurality of times during the display period of the left-eye image, and the light-shielding frequency M, which is a frequency representing the period of falling from high to low in the display period of the left-eye image, It is larger than the frame frequency N and is an odd multiple of the frame frequency N (except 1).
  • the liquid crystal shutter drive signal RS is repeatedly opened and closed a plurality of times during the display period of the right-eye image, and is a light-shielding frequency that is a frequency that represents a cycle of falling from high to low in the display period of the right-eye image.
  • M is larger than the frame frequency N and is an odd multiple (except 1) of the frame frequency N.
  • the liquid crystal shutter 22 for the left eye and the liquid crystal shutter 21 for the right eye each repeat opening and closing faster than the frame rate of the stereoscopic image of the liquid crystal panel LCP. .
  • each of the liquid crystal shutter 22 for the left eye and the liquid crystal shutter 21 for the right eye repeats opening and closing faster than the frame rate of the stereoscopic image of the liquid crystal panel LCP.
  • image light Of the light of the image to be displayed (referred to as image light), external light or image light having a frequency higher than the frame frequency N is incident.
  • image light external light or image light having a frequency higher than the frame frequency N is incident.
  • the light shielding frequency M is higher than the frame frequency N, flicker can be suppressed.
  • M only needs to be larger than N, and it is not necessary to synchronize with the frequency of the commercial power supply as in the technique described in Patent Document 3. For this reason, means for constantly monitoring the period of the external light is not necessary, and an increase in manufacturing cost can be prevented.
  • the liquid crystal shutter 21 for the right eye on the opposite side is opened during the backlight BL lighting period during the display period of the left eye image. Problems may occur.
  • the light shielding frequency M is (2 ⁇ + 1) N times
  • the left eye liquid crystal shutter 22 is sequentially transmitted, the left eye image is incident on the user's left eye, and the right eye liquid crystal shutter 21 is transmitted.
  • the right-eye image can be incident on the right eye of the user.
  • the left-eye liquid crystal shutter 22 can be transmitted through the left-eye image so that the left-eye image is incident on the user's left eye, and the right-eye liquid crystal shutter 21 can be transmitted through the right-eye image.
  • the frequency of the light entering the eye is the image emitted from the liquid crystal panel LCP.
  • the frequency is 180 Hz, which is higher than the frequency of light (that is, the frame frequency).
  • the shading frequency M is not limited to 3 times the frame frequency N, but may be an odd multiple such as 5 times, 7 times,.
  • the frequency of the light shielding frequency M is a high frequency
  • the alignment of the liquid crystal of each of the liquid crystal shutters 21 and 22 cannot be sufficiently controlled, and for example, the next light shielding state is set without being fully transmitted.
  • the liquid crystal driving voltage is applied. In such a case, the brightness of the stereoscopic image displayed on the liquid crystal panel LCP is visually recognized by the user as dark, leading to a reduction in display quality.
  • the liquid crystal shutter driving signal LS is in the high period (the period in which the transmission state of the left-eye liquid crystal shutter 22 is maintained) and the liquid crystal shutter driving signal RS.
  • a high period (a period in which the transmission state of the right-eye liquid crystal shutter 21 is maintained), a low period of the liquid crystal shutter drive signal LS (a period in which the light-shielding state of the left-eye liquid crystal shutter 22 is maintained), and a liquid crystal shutter drive signal RS
  • a low period (a period in which the light-shielding state of the right-eye liquid crystal shutter 21 is maintained) is sufficiently secured.
  • the alignment of the liquid crystal of each of the liquid crystal shutters 21 and 22 can be sufficiently controlled, so that the drive of the liquid crystal of each of the liquid crystal shutters 22 and 21 is delayed so that the liquid crystal shutters 21 and 22 are not fully opened or closed. Can be prevented.
  • the liquid crystal shutter drive signal LS and the liquid crystal shutter drive signal RS are signals that repeat high and low at regular intervals.
  • the liquid crystal shutter drive signal LS becomes high at the start of the display period of the left-eye image, and changes from high to low every 1/3 period (t1) of the display period of the left-eye image. ⁇ It is high.
  • t1 1/360 (seconds).
  • the liquid crystal shutter drive signal RS becomes low at the start of the display period of the left-eye image, and decreases by 1/3 period (t1) of the display period of the left-eye image. ⁇ High ⁇ Low.
  • the liquid crystal shutter drive signal LS is low at the start of the right eye image display period, and is low for every 3 period (t1) of the right eye image display period. ⁇ High ⁇ Low.
  • the liquid crystal shutter drive signal RS becomes high with the start of the right eye image display period, and increases by 1/3 period (t1) of the right eye image display period. ⁇ Low ⁇ High.
  • t is the display period of the left-eye image or the right-eye image as described above. It is not limited to 1/3 of the display period.
  • t is preferably in the range of (1 / 2M) ⁇ t ⁇ (1 / M).
  • the next high-to-low falling signal is input before the left-eye and right-eye liquid crystal shutters 22 and 21 are completely transmissive. Can be prevented. For this reason, it is possible to prevent the stereoscopic image displayed on the liquid crystal panel LCP from being visually recognized as dark by the user.
  • the timing of the rise of the liquid crystal shutter drive signal LS (information indicating that the left-eye liquid crystal shutter 22 is switched from the light shielding state to the transmission state) and the display start of the left-eye image on the liquid crystal panel LCP are displayed.
  • the timing is consistent.
  • the timing of the rise of the liquid crystal shutter drive signal RS (information indicating that the right-eye liquid crystal shutter 21 is switched from the light-shielding state to the transmission state) coincides with the display start timing of the right-eye image on the liquid crystal panel LCP. Yes.
  • the high / low period of the liquid crystal shutter drive signal LS and the high / low period of the liquid crystal shutter drive signal RS are reversed.
  • the rising timing and falling timing of the liquid crystal shutter driving signal LS coincide with the falling timing and rising timing of the liquid crystal shutter driving signal RS.
  • the shutter control unit 23 can use the inverted signal of the liquid crystal shutter drive signal RS (or the liquid crystal shutter drive signal LS) as the liquid crystal shutter drive signal LS (or the liquid crystal shutter drive signal RS). Therefore, the signal can be simplified.
  • the backlight BL is lit only during a period in which the liquid crystal shutter drive signal LS is high and the liquid crystal shutter drive signal RS is low at the end (second time) of the left-eye image display period.
  • the backlight BL is lit only during a period in which the liquid crystal shutter drive signal RS is high and the liquid crystal shutter drive signal LS is low at the end (second time) of the right-eye image display period.
  • the left-eye liquid crystal shutter 22 of the 3D glasses 20 is opened, the right-eye liquid crystal shutter 21 is closed, and the back
  • the display image is visible only to the left eye and the right eye remains dark.
  • the right-eye liquid crystal shutter 21 of the 3D glasses 20 is opened, the left-eye liquid crystal shutter 22 is closed, and the back
  • the display image is visible only to the right eye and the left eye remains dark.
  • the image displayed on the liquid crystal panel LCP can be recognized as a 3D image by the user.
  • FIG. 4 is a diagram for explaining the display operation of the stereoscopic image display apparatus according to the second embodiment.
  • FIG. 4A shows the operating state of the stereoscopic image display device
  • FIG. 4B shows the operating state of the backlight
  • FIG. 4C shows the liquid crystal shutter driving signal for the left eye and the liquid crystal shutter
  • (D) shows the liquid crystal shutter driving signal for the right eye and the driving state of the liquid crystal shutter.
  • FIG. 5 is a diagram showing the voltage applied to the liquid crystal of the liquid crystal shutter and the state of driving the liquid crystal.
  • the light shielding frequency M is the same as that of the first embodiment, but the rising timings of the liquid crystal shutter driving signal LS and the liquid crystal shutter driving signal RS are different.
  • the timing of the rise of the liquid crystal shutter drive signal LS (information indicating that the left-eye liquid crystal shutter 22 is switched from the light-shielding state to the transmission state) is for the left-eye of the liquid crystal panel LCP. It is earlier than the image display start timing.
  • the timing of the rise of the liquid crystal shutter drive signal RS (information indicating that the right-eye liquid crystal shutter 21 is switched from the light shielding state to the transmission state) is the timing of the liquid crystal panel LCP. It is earlier than the display start timing of the right-eye image.
  • the liquid crystal shutter drive signal LS is already high immediately before the start timing of the left eye image display period. After t2, elapses from high to low, elapses from time t3, rises from low to high, and elapses after time t2 and falls simultaneously with the end of the display period of the left-eye image.
  • the liquid crystal shutter drive signal LS becomes low simultaneously with the start timing of the right-eye image display period, rises from low to high after the elapse of the period t3, and elapses of the period t2. Thereafter, the signal falls from high to low, and after the elapse of the period t3, the signal rises immediately before the end timing of the right-eye image display period.
  • the liquid crystal shutter drive signal RS becomes low simultaneously with the start timing of the display period of the left eye image, and after the elapse of the period t3, It falls from low to high, falls from high to low after the elapse of period t2, and rises immediately before the end of the display period of the left-eye image after elapse of period t3.
  • the liquid crystal shutter drive signal RS is high immediately before the start timing of the right-eye image display period, and rises from high to low after the elapse of the period t2. After the elapse of the period t3, the signal rises from low to high, and after the elapse of the period t2, falls at the same time as the end of the display period of the right-eye image.
  • the change in the alignment direction of the liquid crystal of each of the liquid crystal shutters 21 and 22 is delayed with respect to the application of the drive voltage to the liquid crystal shutters 21 and 22.
  • the rising timing of the signal of the liquid crystal shutter driving signal LS is earlier than the display start timing of the image for the left eye of the liquid crystal panel LCP
  • the rising timing of the signal of the liquid crystal shutter driving signal RS is By making the display of the right-eye image on the liquid crystal panel LCP earlier than the display start timing, it is possible to secure a long period of time during which the left-eye liquid crystal shutter 22 and the right-eye liquid crystal shutter 21 change to the transmission state.
  • the left eye liquid crystal shutter 22 and the right eye liquid crystal shutter 21 have a short time for the user to visually recognize the left eye image or the right eye image displayed on the liquid crystal panel LCP due to a delay in liquid crystal orientation. Can be suppressed.
  • the backlight BL can be turned on where the transmittance of the liquid crystal shutters 21 and 22 is close to 100%, the luminance through the liquid crystal shutters 21 and 22 can be made brighter. For this reason, it is possible to prevent a reduction in display quality.
  • the liquid crystal shutter drive signal LS rises during the backlight BL lighting period of the right-eye image.
  • the liquid crystal shutter 22 rises slowly, so that there is no practical problem.
  • the fall timing of the liquid crystal shutter drive signal LS is set to the display end time of the left-eye image.
  • the timing of falling of the liquid crystal shutter drive signal RS may be set later than the display end time of the right-eye image.
  • FIG. 6 is a diagram for explaining the display operation of the stereoscopic image display apparatus according to the third embodiment.
  • FIG. 6A shows the operating state of the stereoscopic image display device
  • FIG. 6B shows the operating state of the backlight
  • FIG. 6C shows the liquid crystal shutter driving signal and the liquid crystal shutter for the left eye
  • (D) shows the liquid crystal shutter driving signal for the right eye and the driving state of the liquid crystal shutter.
  • FIGS. 1 and 4 (a) and 4 (b) are the same as FIGS. 1 and 4 (a) and 4 (b).
  • the light shielding frequency M is the same as in the first and second embodiments, but in the period during which the liquid crystal shutter driving signal LS and the liquid crystal shutter driving signal RS are in a transmission state.
  • the length varies depending on the timing.
  • the liquid crystal shutter drive signal LS becomes high at the same time as the start of the display period of the left-eye image. It falls from low to low, rises from low to high after the lapse of the period t3, and falls simultaneously with the end timing of the display period of the left-eye image after the lapse of the period t2.
  • the liquid crystal shutter drive signal LS becomes low simultaneously with the start timing of the right-eye image display period, rises from low to high after the elapse of the period t1, and elapses of the period t1. Thereafter, the signal falls from high to low, and after the elapse of the period t1, the timing is lowered at the same time as the end of the right eye image display period.
  • the liquid crystal shutter drive signal LS repeats the transmission state and the light-shielding state at regular intervals.
  • the liquid crystal shutter drive signal RS becomes low simultaneously with the start timing of the left eye image display period, and after the elapse of the period t1. It falls from low to high, falls from high to low after the elapse of period t1, and rises simultaneously with the end of the display period of the left-eye image after elapse of period t1.
  • the liquid crystal shutter drive signal RS repeats the light shielding state and the transmission state at regular intervals.
  • the liquid crystal shutter drive signal RS becomes high simultaneously with the start timing of the right-eye image display period, and falls from high to low after the period t1, and the period t3. After elapses, the signal rises from low to high, and rises simultaneously with the end timing of the right-eye image display period after the elapse of the period t2.
  • the low period may be lengthened as period t2.
  • the high / low of the liquid crystal shutter drive signal LS and the high / low of the liquid crystal shutter drive signal RS may be inverted.
  • the high / low switching timing of the liquid crystal shutter driving signal LS and the high / low switching timing of the liquid crystal shutter driving signal RS become the same, and the control signal can be reduced.
  • FIG. 9 is a block diagram showing a configuration of a stereoscopic image display device 19 according to the fourth embodiment.
  • the stereoscopic image display device 19 is different from the stereoscopic image display device 1 in that a drive control unit 15 is provided instead of the drive control unit 10.
  • Other configurations of the stereoscopic image display device 19 are the same as those of the stereoscopic image display device 1.
  • the drive control unit 15 includes an image signal generation unit 16 instead of the drive control unit 10 and the image signal generation unit 11, and a 3D glasses signal generation unit 17 instead of the 3D glasses signal generation unit 14. It differs in that it has. Other configurations of the drive control unit 15 are the same as those of the drive control unit 10.
  • the image signal generation unit 16 includes a storage unit 16a.
  • the storage unit 16a stores information indicating the light shielding frequency M, information indicating the period t during which the liquid crystal shutters 21 and 22 are kept transmissive, and information indicating the lighting timing and lighting period of the backlight BL in one frame. Has been.
  • the information indicating the light shielding frequency M may be stored in the storage unit 16a by calculating the light shielding frequency M based on the above (Formula 1) at the time of factory shipment, or may be appropriately set by the user. May be stored in the storage unit 16a.
  • the lighting timing and lighting period of the backlight BL in one frame indicated by the information indicating the lighting timing and lighting period of the backlight BL in one frame stored in the storage unit 16a takes the light shielding frequency M into consideration.
  • the user can visually recognize the left-eye image with the left eye, and during the right-eye image display period. Is set so that the user can visually recognize the right-eye image with the right eye.
  • the information indicating the lighting timing and lighting period of the backlight BL in one frame is calculated based on the light shielding frequency M calculated in advance at the time of factory shipment, for example. It may be stored in the storage unit 16a, or may be appropriately set by the user and stored in the storage 16a.
  • the image signal generator 16 receives a video signal for stereoscopic image display from the outside. Then, the image signal generation unit 16 outputs the same signal or the like as in the first embodiment to the liquid crystal panel signal generation unit 12.
  • the image signal generation unit 16 is based on the received video signal such as a vertical synchronization signal, and the various synchronization signals and gradation signals for stereoscopic image display, and the image to be displayed on the liquid crystal panel LCP is a left-eye image.
  • Left and right image identification signals which are identification signals for identifying whether the image is for (first eye image, second eye image) or right eye image (second eye image, first eye image);
  • Information indicating the frame frequency (frame frequency information) or the like is generated, and the generated signal is output to the liquid crystal panel signal generator 12.
  • the liquid crystal panel signal generator 12 performs the same processing as in the first embodiment and controls the driving of the liquid crystal panel LCP.
  • the image signal generation unit 16 displays a synchronization signal for displaying a stereoscopic image (for example, a vertical synchronization signal) and information indicating the lighting timing and lighting period of the backlight BL in one frame acquired from the storage unit 16a.
  • a synchronization signal for displaying a stereoscopic image for example, a vertical synchronization signal
  • the image signal generation unit 16 3D displays a synchronization signal for displaying a stereoscopic image (a vertical synchronization signal as an example), information indicating the light shielding frequency M acquired from the storage unit 16a, and information indicating the period t during which the transmission state is maintained.
  • the backlight signal generation unit 13 When the backlight signal generation unit 13 acquires from the image signal generation unit 16 a synchronization signal for stereoscopic image display and information indicating the lighting timing and lighting period of the backlight BL in one frame, the acquired respective signals
  • the backlight drive signal BLS is generated from the above signals and information and output to the backlight BL.
  • the backlight signal generator 13 controls the driving of the backlight BL.
  • the 3D glasses signal generation unit 17 acquires from the image signal generation unit 16 a synchronization signal for stereoscopic image display, information indicating the light shielding frequency M, and information indicating the period t during which the transmission state is held, the acquired A 3D glasses signal MS is generated from each signal and information. Then, the 3D glasses signal generator 17 outputs the generated 3D glasses signal MS to the shutter controller 23. As a result, the shutter control unit 23 performs the same processing as in the first embodiment.
  • the shutter control unit 23 generates the liquid crystal shutter driving signal LS / RS and outputs the liquid crystal shutter driving signal LS to the shutter driving unit 25 to control the driving of the liquid crystal shutter 22, and the liquid crystal shutter driving signal.
  • the drive of the liquid crystal shutter 21 is controlled by outputting RS to the shutter drive unit 24.
  • the stereoscopic image display device 19 includes the storage unit 16a, and the storage unit 16a previously includes information indicating the light shielding frequency M and information indicating the period t during which the liquid crystal shutters 21 and 22 are transmitted. Information indicating the lighting timing and lighting period of the backlight BL in the frame is stored. This eliminates the need for exchanging information between the 3D glasses signal generation unit 17 and the backlight signal generation unit 13 as in the stereoscopic image display device 1, thus simplifying the circuit configuration of the drive control unit 15. Can be
  • the storage unit 16 a may be arranged inside the image signal generation unit 16 or may be arranged outside the image signal generation unit 16.
  • a storage unit in which information indicating the light shielding frequency M and information indicating the period t during which the liquid crystal shutters 21 and 22 are held is stored in the storage unit 16 a is provided inside or outside the 3D glasses signal generation unit 17.
  • the storage unit storing information indicating the lighting timing and lighting period of the backlight BL in one frame may be arranged inside or outside the backlight signal generation unit 13.
  • the stereoscopic image display device displays the first eye image and the second eye image in order, thereby displaying one stereoscopic image
  • the display device includes the above-described display device.
  • a first eye shutter that is in a transmissive state when displaying the first eye image, a second shutter that is in a transmissive state when the display device displays the second eye image, and the first shutter And a shutter control signal for generating a shutter drive signal for driving the second shutter, and controlling the driving of the first and second shutters based on the generated shutter drive signal.
  • the frequency representing the period of information indicating that the first or second shutter is switched from the transmission state to the light shielding state is defined as a light shielding frequency M, and the first eye image and the second eye image are combined.
  • a driving method of a stereoscopic image display device is a display device that displays one stereoscopic image by sequentially displaying a first eye image and a second eye image.
  • a first eye shutter that is in a transmissive state when the display device displays the first eye image
  • a second eye that is in a transmissive state when the display device displays the second eye image.
  • a stereoscopic image display device comprising: a shutter frequency M, a frequency representing a cycle of switching the first or second shutter for shutter from a transmission state to a light shielding state as a light shielding frequency M, and the first eye
  • the first eye shutter is in the transmissive state when the first eye image is displayed by the shutter drive signal generated by the shutter control unit, and the second eye is displayed when the second eye image is displayed.
  • the shutter is in a transmissive state. Accordingly, the first eye image can be incident on the first eye of the user and the second eye image can be incident on the second eye of the user, so that the user can visually recognize the stereoscopic image.
  • the frequency representing the period of information for switching the first or second eye shutter from the transmission state to the light shielding state is defined as a light shielding frequency M, and the first eye image and the second eye.
  • M (2x + 1) ⁇ N where the frame frequency is N when the images for the image are combined and the natural number is x.
  • the shading frequency M is larger than the frame frequency N.
  • each of the first and second shutters is repeatedly opened and closed faster than the frame rate.
  • flicker caused by a frequency component lower than the frame rate can be suppressed.
  • flicker caused by high frequency components in outside light is generally difficult for human eyes to feel.
  • flicker can be reduced.
  • M is larger than N, and it is not necessary to synchronize with the frequency of the commercial power supply as in the technique described in Patent Document 3. For this reason, means for constantly monitoring the period of the external light is not necessary, and an increase in manufacturing cost can be prevented.
  • the first eye shutter is sequentially transmitted to cause the first eye image to enter the user's first eye, and the second eye shutter is transmitted.
  • the second eye image can be incident on the user's second eye.
  • the timing of the information indicating that the first eye shutter is switched from the light shielding state to the transmission state in the shutter driving signal coincides with the timing of the first eye image start of the display device.
  • the timing of information indicating that the second shutter is switched from the light shielding state to the transmission state coincides with the timing of the second eye image start of the display device.
  • the timing of the information indicating that the first eye shutter is switched from the light shielding state to the transmission state in the shutter driving signal is earlier than the display start timing of the first eye image of the display device.
  • the timing of information indicating that the second eye shutter is switched from the light shielding state to the transmission state may be earlier than the display start timing of the second eye image of the display device.
  • the first-eye shutter and the second-eye shutter change to the transmission state. For example, even when the first-eye shutter and the second-eye shutter are switched between the transmission state and the light-shielding state by driving the liquid crystal, the first shutter displayed on the display device due to the delay in the alignment of the liquid crystal. It can suppress that the time for which the image for 1 eye or the image for 2nd eye is visually recognized becomes short. For this reason, it is possible to prevent a reduction in display quality.
  • the light shielding frequency M is preferably three times the frame frequency N.
  • the first-eye shutter is sequentially transmitted through the first-eye shutter, the first-eye image is incident on the first eye of the user, and the second-eye shutter is transmitted through the second-eye shutter. It can enter the eye. Furthermore, since the period for maintaining the transmission state and the period for maintaining the light shielding state of the first eye shutter and the second eye shutter are sufficiently ensured, the first eye shutter and the second eye shutter are secured. Even when the transmission state and the light shielding state are switched by driving the liquid crystal, the transmission state and the light shielding state can be switched reliably. For this reason, it is possible to prevent a reduction in display quality.
  • the shutter drive signal includes a first eye shutter drive signal for driving the first eye shutter and a second eye shutter drive signal for driving the second eye shutter.
  • first shutter drive signal for the first eye information timing indicating switching from the light shielding state to the light transmitting state, information timing indicating switching from the light transmitting state to the light shielding state, and the second shutter driving signal for the second eye It is preferable that the timing of information indicating switching from the transmission state to the light shielding state and the timing of information indicating switching from the light shielding state to the transmission state coincide with each other.
  • the other driving signal is generated only by inverting the generated driving signal. can do.
  • a circuit required for signal generation can be simplified, and an increase in cost can be prevented.
  • a shutter frequency setting unit that sets the light shielding frequency M from the frame frequency N is provided, and the shutter control unit generates the shutter drive signal based on the light shielding frequency M set by the shutter frequency setting unit. Is preferred.
  • the shutter control unit can generate the shutter drive signal.
  • the shutter control unit preferably generates the shutter drive signal based on the light shielding frequency M stored in the storage unit.
  • a backlight is provided, and the shutter drive signal includes a first eye shutter drive signal for driving the first eye shutter and a second eye shutter drive for driving the second eye shutter.
  • the first eye shutter drive signal has information indicating a plurality of transmission states within the display period of the first eye image of the display device, and the second eye shutter.
  • the drive signal has information indicating a plurality of transmission states within the display period of the second eye image of the display device, and the backlight is the first and second eye images of the display device. It is preferable to light only during the last period of the information periods indicating the plurality of transmission states in each of the display periods.
  • the first eye image or the second eye image being displayed on the display device is prevented from being visually recognized by the user, and the first eye displayed on the display device is surely displayed.
  • the user image or the second eye image can be visually recognized by the user. Thereby, the fall of the display quality of a stereo image can be prevented.
  • the present invention can be used in a display device that displays a stereoscopic image.
  • stereoscopic image display device 2 liquid crystal display device (display device) DESCRIPTION OF SYMBOLS 10 Drive control part 11 * 16 Image signal generation part 12 Liquid crystal panel signal generation part 13 Backlight signal generation part 14 * 17 3D glasses signal generation part 14a Shutter frequency setting part 16a Storage part 20 3D glasses 21 * 22 Liquid crystal shutter 23 Shutter control unit 24/25 Shutter drive unit BL Backlight LCP Liquid crystal panel LS Liquid crystal shutter drive signal (shutter drive signal, first shutter drive signal, second shutter drive signal) RS Liquid crystal shutter drive signal (shutter drive signal, second shutter drive signal, first shutter drive signal) M Shading frequency MS 3D glasses signal N Frame frequency

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  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

La présente invention se rapporte à un dispositif d'affichage d'image stéréoscopique (1) comprenant : un dispositif d'affichage à cristaux liquides (2) ; des obturateurs à cristaux liquides (22, 21) pour l'œil gauche et pour l'œil droit ; et un module de commande d'obturateur (23), qui génère des signaux (LS, RS) pour activer les obturateurs à cristaux liquides, et qui commande l'activation des obturateurs à cristaux liquides (22, 21) au moyen des signaux générés (LS, RS) pour activer les obturateurs à cristaux liquides. Dans la solution technique décrite dans la présente invention, si une fréquence de blocage de lumière M correspond à la fréquence qui représente la période de front montant et de front descendant des signaux (LS, RS) qui sont générés pour activer les obturateurs à cristaux liquides, que N correspond à la fréquence de trame quand l'une des trames est une combinaison d'une image pour un œil gauche et d'une image pour un œil droit et que x est un nombre naturel, M est alors égal à (2x+1)×N. De cette manière, il est possible d'empêcher une augmentation des coûts de fabrication, et un vacillement peut également être réduit de manière fiable sans dépendre de la période de suppression de signal.
PCT/JP2012/071234 2011-09-16 2012-08-22 Dispositif d'affichage d'image stéréoscopique et procédé de commande de dispositif d'affichage d'image stéréoscopique WO2013038883A1 (fr)

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN106210706A (zh) * 2015-05-08 2016-12-07 深圳市立鼎光电技术有限公司 在led显示屏上实现3d显示的***
FR3105458A1 (fr) * 2019-12-18 2021-06-25 Valeo Vision Procede de commande et systeme anti-eblouissement pour vehicules automobiles

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JP2004233932A (ja) * 2003-02-03 2004-08-19 Sharp Corp 液晶表示装置
WO2008056753A1 (fr) * 2006-11-08 2008-05-15 Nec Corporation Système d'affichage
JP2010243705A (ja) * 2009-04-03 2010-10-28 Hitachi Ltd 立体表示装置
JP2011082615A (ja) * 2009-10-02 2011-04-21 Toshiba Corp 映像信号処理装置及び映像信号処理方法
JP2011124939A (ja) * 2009-12-14 2011-06-23 Sony Corp 表示装置、表示方法及びコンピュータプログラム

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004233932A (ja) * 2003-02-03 2004-08-19 Sharp Corp 液晶表示装置
WO2008056753A1 (fr) * 2006-11-08 2008-05-15 Nec Corporation Système d'affichage
JP2010243705A (ja) * 2009-04-03 2010-10-28 Hitachi Ltd 立体表示装置
JP2011082615A (ja) * 2009-10-02 2011-04-21 Toshiba Corp 映像信号処理装置及び映像信号処理方法
JP2011124939A (ja) * 2009-12-14 2011-06-23 Sony Corp 表示装置、表示方法及びコンピュータプログラム

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106210706A (zh) * 2015-05-08 2016-12-07 深圳市立鼎光电技术有限公司 在led显示屏上实现3d显示的***
FR3105458A1 (fr) * 2019-12-18 2021-06-25 Valeo Vision Procede de commande et systeme anti-eblouissement pour vehicules automobiles

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