WO2014136610A1 - 立体表示装置 - Google Patents

立体表示装置 Download PDF

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Publication number
WO2014136610A1
WO2014136610A1 PCT/JP2014/054447 JP2014054447W WO2014136610A1 WO 2014136610 A1 WO2014136610 A1 WO 2014136610A1 JP 2014054447 W JP2014054447 W JP 2014054447W WO 2014136610 A1 WO2014136610 A1 WO 2014136610A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
electrode group
electrode
crystal panel
display device
Prior art date
Application number
PCT/JP2014/054447
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
岳洋 村尾
拓人 吉野
福島　浩
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.)
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Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Priority to CN201480012791.8A priority Critical patent/CN105008985A/zh
Priority to JP2015504247A priority patent/JP6009648B2/ja
Publication of WO2014136610A1 publication Critical patent/WO2014136610A1/ja

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    • 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
    • G03B35/18—Stereoscopic photography by simultaneous 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
    • G02B30/26—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 autostereoscopic type
    • G02B30/27—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 autostereoscopic type involving lenticular arrays
    • 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
    • G02B30/26—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 autostereoscopic type
    • G02B30/30—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 autostereoscopic type involving parallax barriers
    • G02B30/31—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 autostereoscopic type involving parallax barriers involving active parallax barriers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1313—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells specially adapted for a particular application
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • 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
    • H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
    • H04N13/31—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using parallax barriers
    • 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
    • G03B35/18—Stereoscopic photography by simultaneous viewing
    • G03B35/24—Stereoscopic photography by simultaneous viewing using apertured or refractive resolving means on screens or between screen and eye

Definitions

  • the present invention relates to an autostereoscopic display device.
  • a parallax barrier method and a lenticular lens method are known. These stereoscopic display devices separate light with a barrier or a lens, project different images to the left and right eyes, and give the viewer a stereoscopic effect. 2. Description of the Related Art In recent years, autostereoscopic display devices that are on the market are mainly two-view parallax barrier systems and lenticular lens systems.
  • a good stereoscopic display can be obtained in the set region.
  • the image to be projected on the right eye and the image to be projected on the left eye are mixed and doubled.
  • Japanese Patent Application Laid-Open No. 2009-9081 discloses an electronic video apparatus including a display unit that displays a two-dimensional or three-dimensional video, and a barrier that is arranged to face the display unit and provides the video to the user.
  • the barrier of the electronic video apparatus includes a first substrate and a second substrate that are arranged to face each other, a plurality of first electrodes formed on the first substrate, an insulating layer formed so as to cover the first electrode, A plurality of second electrodes formed on the insulating layer; and a liquid crystal layer disposed between the first substrate and the second substrate.
  • the first electrode and the second electrode are located between the adjacent second electrodes and between the first electrodes through the insulating layer, respectively, and the width of the first electrode and the width of the second electrode are respectively the corresponding second electrodes. It is characterized in that it is wider than the mutual interval between the adjacent electrodes and the first electrode.
  • An object of the present invention is to provide a stereoscopic display device capable of observing a stereoscopic image with low crosstalk over a wide area.
  • the stereoscopic display device disclosed herein acquires a display panel that displays an image, a switch liquid crystal panel that is arranged on the display panel, a control unit that controls the switch liquid crystal panel, and position information of an observer. And a position sensor to be supplied to the control unit.
  • the switch liquid crystal panel is formed on the first substrate, a second substrate disposed opposite to the first substrate, a liquid crystal layer sandwiched between the first substrate and the second substrate, and the first substrate.
  • a first electrode group including a plurality of electrodes arranged at predetermined electrode intervals along an alignment direction that is an in-plane direction of the first substrate; and formed on the second substrate, along the alignment direction.
  • a second electrode group including a plurality of electrodes arranged at the electrode interval.
  • the first electrode group and the second electrode group are arranged to be shifted from each other in the alignment direction.
  • the control unit controls the potentials of the plurality of electrodes included in the first electrode group and the potentials of the plurality of electrodes included in the second electrode group according to the position information.
  • a stereoscopic display device capable of observing a stereoscopic image with low crosstalk over a wide area can be obtained.
  • FIG. 1 is a schematic cross-sectional view showing a configuration of a stereoscopic display device according to the first embodiment of the present invention.
  • FIG. 2 is a block diagram illustrating a functional configuration of the stereoscopic display device according to the first embodiment of the present invention.
  • FIG. 3 is a flowchart of a process performed by the stereoscopic display device according to the first embodiment of the present invention.
  • FIG. 4A is a diagram for explaining the principle of stereoscopic display by the stereoscopic display device according to the first embodiment of the present invention.
  • FIG. 4B is a diagram for explaining the principle of stereoscopic display by the stereoscopic display device according to the first embodiment of the present invention.
  • FIG. 4A is a diagram for explaining the principle of stereoscopic display by the stereoscopic display device according to the first embodiment of the present invention.
  • FIG. 4B is a diagram for explaining the principle of stereoscopic display by the stereoscopic display device according to the first embodiment of the present invention
  • FIG. 4C is a diagram for explaining the principle of stereoscopic display by the stereoscopic display device according to the first embodiment of the present invention.
  • FIG. 5A is a diagram for explaining the principle of stereoscopic display by the stereoscopic display device according to the first embodiment of the present invention.
  • FIG. 5B is a diagram for explaining the principle of stereoscopic display by the stereoscopic display device according to the first embodiment of the present invention.
  • FIG. 5C is a view for explaining the principle of stereoscopic display by the stereoscopic display device according to Embodiment 1 of the present invention.
  • FIG. 6A is a plan view showing the configuration of the first substrate of the switch liquid crystal panel.
  • FIG. 6B is a plan view showing the configuration of the second substrate of the switch liquid crystal panel.
  • FIG. 6A is a plan view showing the configuration of the first substrate of the switch liquid crystal panel.
  • FIG. 7 is a cross-sectional view illustrating a schematic configuration of the stereoscopic display device according to the first embodiment of the present invention.
  • FIG. 8 is an enlarged sectional view showing a part of the switch liquid crystal panel.
  • FIG. 9A is a diagram for explaining an example of a manufacturing method of the first substrate.
  • FIG. 9B is a diagram for explaining an example of the manufacturing method of the first substrate.
  • FIG. 9C is a diagram for explaining an example of the manufacturing method of the first substrate.
  • FIG. 10A is a cross-sectional view schematically showing one of the barrier lighting states of the switch liquid crystal panel.
  • FIG. 10B is a waveform diagram of signals V A to V L supplied to the respective electrodes to bring the switch liquid crystal panel into the barrier lighting state of FIG. 10A.
  • FIG. 11A is a cross-sectional view schematically showing another barrier lighting state of the switch liquid crystal panel.
  • FIG. 11B is a waveform diagram of signals V A to V L supplied to the respective electrodes to bring the switch liquid crystal panel into the barrier lighting state of FIG. 11A.
  • FIG. 12A is a cross-sectional view schematically showing another barrier lighting state of the switch liquid crystal panel.
  • FIG. 12B is a waveform diagram of signals V A to V L supplied to the respective electrodes to bring the switch liquid crystal panel into the barrier lighting state of FIG. 12A.
  • FIG. 13 is a diagram illustrating the angular characteristics of the luminance of the stereoscopic display device when the barrier lighting state is fixed.
  • FIG. 14 is a diagram illustrating angular characteristics of the left-eye crosstalk XT (L) and the right-eye crosstalk XT (R).
  • FIG. 15A is a diagram illustrating the crosstalk angular characteristics when the barrier lighting state is changed.
  • FIG. 15B is a diagram illustrating the crosstalk angular characteristics when the barrier lighting state is changed.
  • FIG. 16 is a diagram for explaining the relationship between the dimension of the electrode and the resistance.
  • Figure 17 is a waveform diagram illustrating the case of supplying a signal Vin from the point P1 in FIG. 16, the relationship between the potential V P2 of the signal Vin and the point P2.
  • FIG. 18 is a plan view for explaining a configuration of a pixel of the display panel.
  • FIG. 19 is a diagram schematically showing the relationship between pixels and barriers and slits formed by the switch liquid crystal panel.
  • FIG. 20A is another example of a waveform diagram of signals V A to V L supplied to each electrode in order to set the switch liquid crystal panel to the barrier lighting state of FIG. 10A.
  • FIG. 20B is another example of a waveform diagram of signals V A to V L supplied to each electrode in order to set the switch liquid crystal panel to the barrier lighting state of FIG. 11A.
  • FIG. 20C is another example of a waveform diagram of signals V A to V L supplied to the respective electrodes to bring the switch liquid crystal panel into the barrier lighting state of FIG. 12A.
  • FIG. 20A is another example of a waveform diagram of signals V A to V L supplied to each electrode in order to set the switch liquid crystal panel to the barrier lighting state of FIG. 10A.
  • FIG. 20B is another example of a waveform diagram of signals V A to V L supplied to each electrode in order to set the switch liquid crystal panel to the barrier lighting state of
  • FIG. 21A is still another example of a waveform diagram of signals V A to V L supplied to the respective electrodes to bring the switch liquid crystal panel into the barrier lighting state of FIG. 10A.
  • FIG. 21B is still another example of the waveform diagram of the signals V A to V L supplied to the respective electrodes to bring the switch liquid crystal panel into the barrier lighting state of FIG. 11A.
  • FIG. 21C is still another example of a waveform diagram of signals V A to V L supplied to the respective electrodes to bring the switch liquid crystal panel into the barrier lighting state of FIG. 12A.
  • FIG. 22A is a cross-sectional view schematically showing one of the barrier lighting states of the switch liquid crystal panel.
  • FIG. 22B is a waveform diagram of signals V A to V L supplied to the respective electrodes to bring the switch liquid crystal panel into the barrier lighting state of FIG. 22A.
  • FIG. 23A is a cross-sectional view schematically showing another barrier lighting state of the switch liquid crystal panel.
  • FIG. 23B is a waveform diagram of signals V A to V L supplied to the respective electrodes to bring the switch liquid crystal panel into the barrier lighting state of FIG. 23A.
  • FIG. 24A is a cross-sectional view schematically showing another barrier lighting state of the switch liquid crystal panel.
  • FIG. 24B is a waveform diagram of signals V A to V L supplied to the respective electrodes to bring the switch liquid crystal panel into the barrier lighting state of FIG. 24A.
  • FIG. 25A is a diagram schematically illustrating a relationship between pixels and barriers and slits formed by the switch liquid crystal panel.
  • FIG. 25B is a diagram when the barrier and the slit are moved from FIG. 25A.
  • FIG. 26 is a schematic cross-sectional view showing a configuration of a stereoscopic display device according to the third embodiment of the present invention.
  • FIG. 27A is a diagram for explaining the effect of the stereoscopic display device according to the third embodiment of the present invention.
  • FIG. 27B is a diagram for explaining the effect of the stereoscopic display device according to the first embodiment of the present invention.
  • FIG. 28 is a graph schematically showing an angular characteristic of luminance of the stereoscopic display device according to the first and third embodiments of the present invention.
  • a stereoscopic display device includes a display panel that displays an image, a switch liquid crystal panel that is disposed on the display panel, a control unit that controls the switch liquid crystal panel, and an observer position.
  • a position sensor that acquires information and supplies the information to the control unit.
  • the switch liquid crystal panel is formed on the first substrate, a second substrate disposed opposite to the first substrate, a liquid crystal layer sandwiched between the first substrate and the second substrate, and the first substrate.
  • a first electrode group including a plurality of electrodes arranged at predetermined electrode intervals along an alignment direction that is an in-plane direction of the first substrate; and formed on the second substrate, along the alignment direction.
  • a second electrode group including a plurality of electrodes arranged at the electrode interval.
  • the first electrode group and the second electrode group are arranged to be shifted from each other in the alignment direction.
  • the control unit controls the potentials of the plurality of electrodes included in the first electrode group and the potentials of the plurality of electrodes included in the second electrode group according to the position information (first configuration). .
  • the stereoscopic display device includes a display panel and a switch liquid crystal panel.
  • the switch liquid crystal panel includes a first substrate on which a first electrode group is formed and a second substrate on which a second electrode group is formed.
  • Each of the first electrode group and the second electrode group includes a plurality of electrodes arranged at the same electrode interval along the same alignment direction.
  • the control unit controls the potentials of these electrodes in accordance with the position information of the observer supplied from the position sensor, and forms a potential difference between the first electrode group and the second electrode group.
  • the switch liquid crystal panel controls the orientation of the liquid crystal layer and the behavior of light passing through the liquid crystal layer by an electric field formed by this potential difference. By arranging the first electrode group and the second electrode group to be shifted from each other in the alignment direction, the electric field can be controlled more finely than the electrode interval.
  • the first electrode group and the second electrode group are arranged so as to be shifted from each other by half of the electrode interval in the alignment direction (second configuration).
  • the electric field can be controlled at equal intervals by half of the electrode interval.
  • the control unit applies a part of electrodes included in one electrode group selected from the first electrode group and the second electrode group in accordance with the position information. It is good also as a structure which drives by one phase and drives another electrode by the 2nd phase of the opposite polarity to the said 1st phase (3rd structure).
  • the control unit determines a part of electrodes included in one electrode group selected from the first electrode group and the second electrode group according to the position information.
  • a configuration may be adopted in which driving is performed with a potential, and the other electrodes are driven so that the polarity is inverted at a predetermined period with respect to the constant potential (fourth configuration).
  • the control unit determines a part of electrodes included in one electrode group selected from the first electrode group and the second electrode group in accordance with the position information. It is also possible to drive so that the polarity is inverted at a predetermined cycle with respect to the constant potential, and drive the other electrodes at the predetermined constant potential (fifth configuration).
  • control unit has an area where the switch liquid crystal panel blocks light in a region where the first electrode group and the second electrode group are formed.
  • the switch liquid crystal panel may be controlled to be larger than the area through which the panel transmits light (sixth configuration).
  • the above configuration when displaying a parallax image on the display panel, it is possible to reduce the appearance of the parallax image being mixed with the eyes of the observer. That is, the above configuration has excellent separation characteristics.
  • control unit includes: an area where the switch liquid crystal panel blocks light in a region where the first electrode group and the second electrode group are formed;
  • the switch liquid crystal panel may be controlled such that the area through which the panel transmits light is approximately equal (seventh configuration).
  • the switch liquid crystal panel may be disposed closer to the viewer side than the display panel (eighth configuration).
  • the light from the display panel is separated by the switch liquid crystal panel.
  • This configuration is superior in separation characteristics compared to the following ninth configuration.
  • the display panel may be disposed closer to the viewer than the switch liquid crystal panel (9th configuration).
  • the light separated by the switch liquid crystal panel passes through the display panel.
  • the light separated by the switch liquid crystal panel is scattered or diffracted by the display panel.
  • the change in the angle of luminance becomes moderate.
  • the display panel may be a liquid crystal display panel (tenth configuration).
  • FIG. 1 is a schematic cross-sectional view showing a configuration of a stereoscopic display device 1 according to the first embodiment of the present invention.
  • the stereoscopic display device 1 includes a display panel 10, a switch liquid crystal panel 20, and an adhesive resin 30.
  • the display panel 10 and the switch liquid crystal panel 20 are arranged so that the switch liquid crystal panel 20 is on the viewer 90 side, and are bonded together by an adhesive resin 30.
  • the display panel 10 includes a TFT (Thin Film Transistor) substrate 11, a CF (Color Filter) substrate 12, a liquid crystal layer 13, and polarizing plates 14 and 15.
  • the display panel 10 controls the alignment of liquid crystal molecules in the liquid crystal layer 13 by controlling the TFT substrate 11 and the CF substrate 12.
  • the display panel 10 is irradiated with light from a backlight unit (not shown).
  • the display panel 10 displays an image by adjusting the light transmission amount for each pixel by the liquid crystal layer 13 and the polarizing plates 14 and 15.
  • the switch liquid crystal panel 20 includes a first substrate 21, a second substrate 22, a liquid crystal layer 23, and a polarizing plate 24.
  • the first substrate 21 and the second substrate 22 are arranged so as to face each other.
  • the liquid crystal layer 23 is sandwiched between the first substrate 21 and the second substrate 22.
  • the polarizing plate 24 is disposed on the viewer 90 side (the side opposite to the display panel 10).
  • a plurality of electrodes are formed on the first substrate 21 and the second substrate 22, respectively.
  • the switch liquid crystal panel 20 controls the potential of these electrodes, manipulates the orientation of the liquid crystal molecules in the liquid crystal layer 23, and changes the behavior of light passing through the liquid crystal layer 23. More specifically, the switch liquid crystal panel 23 is configured to block the light from the display panel 10 and the light from the display panel 10 by the alignment of the liquid crystal molecules of the liquid crystal layer 23 and the action of the polarizing plate 24. A region to be transmitted (slit) is formed. Detailed structures and operations of the first substrate 21 and the second substrate 22 will be described later.
  • the thickness of the TFT substrate 11 and the CF substrate 12 is, for example, 200 ⁇ m.
  • the thickness of the polarizing plate 14 is, for example, 137 ⁇ m.
  • the thickness of the polarizing plate 15 is 170 ⁇ m, for example.
  • the thickness of the first substrate 21 and the second substrate 22 is, for example, 225 ⁇ m.
  • the thickness of the adhesive resin 30 is, for example, 50 ⁇ m.
  • the polarizing plate 15 may be disposed on the switch liquid crystal panel 20. That is, the polarizing plate 15 may be disposed on the surface of the switch liquid crystal panel 20 on the display panel 10 side of the first substrate 21, and the adhesive resin 30 may be disposed between the polarizing plate 15 and the CF substrate 12.
  • the direction parallel to the line segment connecting the left eye 90L and the right eye 90R of the observer 90 when the observer 90 and the stereoscopic display device 1 face each other (the x direction in FIG. 1) is referred to as a horizontal direction.
  • a direction (y direction in FIG. 1) perpendicular to the horizontal direction in the plane of the display panel 10 is referred to as a vertical direction.
  • FIG. 2 is a block diagram showing a functional configuration of the stereoscopic display device 1.
  • FIG. 3 is a flowchart of processing by the stereoscopic display device 1.
  • the stereoscopic display device 1 further includes a control unit 40 and a position sensor 41.
  • the control unit 40 includes a calculation unit 42, a switch liquid crystal panel drive unit 43, and a display panel drive unit 44.
  • the display panel drive unit 44 drives the display panel 10 based on a video signal input from the outside, and causes the display panel 10 to display an image.
  • the position sensor 41 acquires the position information of the observer 90 (step S1).
  • the position sensor 41 is, for example, a camera or an infrared sensor.
  • the position sensor 41 supplies the acquired position information to the calculation unit 42 of the control unit 40.
  • the calculation unit 42 analyzes the position information of the observer 90 supplied from the position sensor 41, and calculates the position coordinates (x, y, z) of the observer 90 (step S2).
  • the position coordinates can be calculated by, for example, an eye tracking system that detects the position of the eyes of the observer 90 by image processing.
  • the calculation of the position coordinates may be performed by a head tracking system that detects the position of the head of the observer 90 using infrared rays.
  • the calculation unit 42 further determines the barrier lighting state of the switch liquid crystal panel 20 according to the position coordinates of the observer 90 (step S3). That is, the position of the barrier of the switch liquid crystal panel 20 and the position of the slit are determined according to the position coordinates of the observer 90.
  • the calculation unit 42 supplies the information on the determined barrier lighting state to the switch liquid crystal panel drive unit 43.
  • the switch liquid crystal panel drive unit 43 drives the switch liquid crystal panel 20 based on the information supplied from the calculation unit 42 (step S4). Thereafter, steps S1 to S4 are repeated.
  • the display panel 10 includes a plurality of pixels 110. On the pixel 110, the right-eye image (R) and the left-eye image (L) are alternately displayed in the horizontal direction.
  • the switch liquid crystal panel 20 is formed with a barrier BR that blocks light from the display panel 10 and a slit SL that transmits light from the display panel 10 at predetermined intervals.
  • a barrier BR that blocks light from the display panel 10
  • a slit SL that transmits light from the display panel 10 at predetermined intervals.
  • S2 is the distance from the barrier BR to the observer 90.
  • S2 is the distance from the barrier BR to the observer 90.
  • S2 is the distance from the barrier BR to the observer 90.
  • S2 is the distance from the barrier BR to the observer 90.
  • FIG. 4B is a diagram illustrating a state in which the observer 90 has moved from FIG. 4A in the horizontal direction.
  • both the right-eye image (R) and the left-eye image (L) appear in the right eye 90R of the observer 90.
  • both the right-eye image (R) and the left-eye image (L) appear in the left eye 90L.
  • the observer 90 cannot feel a stereoscopic effect (crosstalk area).
  • FIG. 4C is a diagram showing a state where the observer 90 has moved further in the horizontal direction from FIG. 4B.
  • the left-eye image (L) appears in the right eye 90R of the observer 90
  • the right-eye image (R) appears in the left eye 90L.
  • the image that should be in the back is observed in the foreground
  • the image that should be in the foreground is observed in the back, so that the observer 90 cannot feel the correct three-dimensional effect and feels uncomfortable ( Reverse viewing area).
  • the observer 90 when the observer 90 moves, the normal area, the crosstalk area, and the reverse vision area repeatedly appear. Therefore, when the barrier lighting state is fixed, the observer 90 can feel a stereoscopic effect only in a limited area.
  • the control unit 40 changes the barrier lighting state of the switch liquid crystal panel 20 according to the position information (position coordinates) of the observer 90.
  • the normal region can always be obtained, and the crosstalk region and the reverse viewing region can be prevented from occurring.
  • FIG. 6A is a plan view showing the configuration of the first substrate 21 of the switch liquid crystal panel 20.
  • a first electrode group 211 is formed on the first substrate 21.
  • the first electrode group 211 includes a plurality of electrodes arranged at an electrode interval BP along the x direction. Each of the plurality of electrodes extends in the y direction and is arranged in parallel to each other.
  • a wiring group 212 electrically connected to the first electrode group 211 is formed on the first substrate 21.
  • the wiring group 212 is preferably formed outside a portion (active area AA) that overlaps the display area of the display panel 10 when the switch liquid crystal panel 20 is overlapped with the display panel 10.
  • FIG. 6B is a plan view showing the configuration of the second substrate 22 of the switch liquid crystal panel 20.
  • a second electrode group 221 is formed on the second substrate 22.
  • the second electrode group 221 includes a plurality of electrodes arranged at the electrode interval BP along the x direction. Each of the plurality of electrodes extends in the y direction and is arranged in parallel to each other.
  • a wiring group 222 electrically connected to the second electrode group 221 is formed on the second substrate 22. Similar to the wiring group 212, the wiring group 222 is preferably formed outside the active area AA.
  • Twelve systems of signals V A to V L are supplied from the control unit 40 to the first electrode group 211 and the second electrode group 221. More specifically, six signals V B , V D , V F , V H , V J , and V L are supplied to the first electrode group 211 through the wiring group 212. Six systems of signals V A , V C , V E , V G , V I , and V K are supplied to the second electrode group 221 through the wiring group 222.
  • the electrodes each electrode 211B that V L is supplied 211D, 211F, 211H, 211J, 211L
  • wirings electrically connected to the electrodes 211B, 211D, 211F, 211H, 211J, and 211L are referred to as wirings 212B, 212D, 212F, 212H, 212J, and 212L for reference.
  • electrodes to which signals V A , V C , V E , V G , V I , and V K are supplied are electrodes 221A, 221C, 221E, 221G, 221I, and 221K, respectively. Call and refer.
  • the wirings electrically connected to the electrodes 221A, 221C, 221E, 221G, 221I, and 221K are referred to as wirings 222A, 222C, 222E, 222G, 222I, and 222K.
  • the electrodes 211B, 211D, 211F, 211H, 211J, and 211L are periodically arranged in this order in the x direction. In other words, six electrodes adjacent to a certain electrode are arranged so as to be supplied with the same signal as that electrode. Similarly, the electrodes 221A, 221C, 221E, 221G, 221I, and 221K are periodically arranged in the x direction in this order.
  • FIG. 7 is a cross-sectional view showing a schematic configuration of the stereoscopic display device 1.
  • FIG. 8 is an enlarged cross-sectional view showing a part of the switch liquid crystal panel 20.
  • the first electrode group 211 and the second electrode group 221 are arranged so as to be shifted from each other in the x direction.
  • the first electrode group 211 and the second electrode group 221 are preferably arranged so as to be shifted from each other by half the electrode interval BP in the x direction, as in the example of FIG.
  • the electrode interval BP is the sum of the electrode width W and the gap S between the electrodes.
  • BP ⁇ / 6 ⁇ PP / 3.
  • PP 80.7 ⁇ m
  • BP 26.87 ⁇ m
  • W 22.87 ⁇ m
  • S 4 ⁇ m.
  • alignment films are formed on the first substrate 21 and the second substrate 22, respectively.
  • the alignment film formed on the first substrate 21 and the alignment film formed on the second substrate 22 are rubbed in directions intersecting each other.
  • the liquid crystal molecules of the liquid crystal layer 23 are in a so-called twisted nematic alignment in which the alignment direction rotates from the first substrate 21 toward the second substrate 22 in the absence of voltage.
  • the switch liquid crystal panel 20 is a so-called normally white liquid crystal in which the transmittance is maximized when no voltage is applied to the liquid crystal layer 23.
  • the switch liquid crystal panel 20 may be a so-called normally black liquid crystal.
  • the second substrate 22 can have the same configuration as the first substrate 21 and can be manufactured in the same manner as the first substrate 21.
  • a first electrode group 211 and a relay electrode 213 are formed on a substrate 210.
  • the relay electrode 213 is an electrode for relaying the wiring group 212 formed in a later process.
  • the substrate 210 is a substrate having translucency and insulating properties, for example, a glass substrate.
  • the first electrode group 211 preferably has translucency.
  • the relay electrode 213 is formed in the active area, it is preferable that the relay electrode 213 also has translucency.
  • the relay electrode 213 is not required to have translucency.
  • the first electrode group 211 and the relay electrode 213 are, for example, ITO (Indium Tin Oxide).
  • the relay electrode 213 When the relay electrode 213 is formed outside the active area, the relay electrode 213 may be aluminum, for example.
  • the first electrode group 211 and the relay electrode 213 are formed by sputtering or CVD (Chemical Vapor Deposition), for example, and patterned by photolithography.
  • an insulating film 214 is formed to cover the substrate 210, the first electrode group 211, and the relay electrode 213.
  • a contact hole 214a and a contact hole 214b are formed in the insulating film 214.
  • the contact hole 214a is formed at a position where the first electrode group 211 and the wiring group 212 formed in the next step are connected.
  • the contact hole 214b is formed at a position where the relay electrode 213 and the wiring group 212 are connected.
  • the insulating film 214 preferably has translucency, for example, SiN.
  • the insulating film 214 is formed by, for example, CVD, and the contact hole 214a and the contact hole 214b are formed by photolithography. In the case where the wiring group 212 is formed outside the active area, patterning may be performed so that the insulating film 214 is formed only outside the active area.
  • a wiring group 212 is formed.
  • the wiring group 212 is connected to the first electrode group 211 through the contact hole 214a, and is connected to the relay electrode 213 through the contact hole 214b.
  • the wiring group 212 preferably has high conductivity, for example, aluminum.
  • the wiring group 212 may be ITO.
  • the wiring group 212 is formed by sputtering and patterned by photolithography.
  • the wirings 212B, 212D, 212F, 212H, 212J, and 212L are connected to the electrodes 211B, 211D, 211F, 211H, 211J, and 211L, respectively.
  • the first electrode group 211 and the wiring group 212 can be crossed in a plan view.
  • one end of the wiring group 212 is gathered in the vicinity of the peripheral edge of the substrate 21 to form a terminal portion 212a.
  • An FPC (Flexible Printed Circuit) or the like is connected to the terminal portion 212a.
  • wiring is connected to both sides of each electrode of the electrode group 211 in the y direction.
  • a set of wirings connected to both sides of each electrode in the electrode group 211 in the y direction are connected to each other by a relay electrode 213.
  • FIG. 10A is a cross-sectional view schematically showing one of the barrier lighting states of the switch liquid crystal panel 20.
  • FIG. 10B is a waveform diagram of signals V A to V L supplied to the respective electrodes for setting the switch liquid crystal panel 20 to the barrier lighting state of FIG. 10A.
  • the control unit 40 drives some of the electrodes included in one of the electrode groups selected from the first electrode group 211 and the second electrode group 221 in the first phase, and the other electrodes have the opposite polarity to the first phase. Drive in the second phase.
  • the electrode driven in the first phase is schematically shown with a sand pattern. The same applies to FIGS. 11A and 12A.
  • the control unit 40 sets the electrodes 211B, 211H, 211J, and 211L included in the first electrode group 211 to the first phase, and the other electrodes (electrodes 211D and 211F and electrodes 221A to 221K). Is applied with a rectangular alternating voltage having a second phase.
  • the amplitudes of the signals V A to V L are all equal.
  • the signals V A to V L are either a predetermined high level potential (V high , for example, 5 V) or a predetermined low level potential (V low , for example, 0 V).
  • the switch liquid crystal panel 20 is a normally white liquid crystal. Therefore, the barrier BR is formed in a portion where the electrode 221A and the electrode 211B overlap in plan view (xy plan view).
  • electrode 211B and electrode 221C, electrode 221G and electrode 211H, electrode 211H and electrode 221I, electrode 221I and electrode 211J, electrode 211J and electrode 221K, electrode 221K and electrode 211L, and electrode 211L and electrode A barrier BR is formed in a portion where 221A overlaps in plan view.
  • the switch liquid crystal panel 20 is a normally white liquid crystal. Therefore, the slit SL is formed in a portion where the electrode 221C and the electrode 211D overlap in plan view.
  • a slit SL is formed in a portion where the electrode 211D and the electrode 221E, the electrode 221E and the electrode 211F, and the electrode 211F and the electrode 221G overlap in a plan view.
  • the barrier BR is formed in a portion overlapping the electrodes 211B, 211H, 211J, and 211L driven in the first phase in a plan view, and a slit SL is formed in a portion overlapping the electrodes 211D and 211F in a plan view.
  • FIG. 11A is a cross-sectional view schematically showing another barrier lighting state of the switch liquid crystal panel 20.
  • FIG. 11B is a waveform diagram of signals V A to V L supplied to the respective electrodes in order to place the switch liquid crystal panel 20 in the barrier lighting state of FIG. 11A.
  • the control unit 40 sets the electrodes 221A, 221C, 221I, and 221K included in the second electrode group 221 to the first phase, and the other electrodes (electrodes 221E and 221G and electrodes 211B to 211L). Is applied with a rectangular alternating voltage having a second phase.
  • a barrier BR is formed in a portion overlapping with the electrodes 221A, 221C, 221I, and 221K in plan view
  • a slit SL is formed in a portion overlapping with the electrodes 221E and 221G in plan view.
  • FIG. 12A is a cross-sectional view schematically showing another barrier lighting state of the switch liquid crystal panel 20.
  • FIG. 12B is a waveform diagram of signals V A to V L supplied to the respective electrodes to bring the switch liquid crystal panel 20 into the barrier lighting state of FIG. 12A.
  • the control unit 40 sets the electrodes 211B, 211D, 211J, and 211L included in the first electrode group 211 to the first phase, and the other electrodes (the electrodes 211F and 211H and the electrodes 221A to 221K). Is applied with a rectangular alternating voltage having a second phase.
  • the barrier BR is formed in a portion overlapping the electrodes 211B, 211D, 211J, and 211L in plan view
  • the slit SL is formed in a portion overlapping the electrodes 211F and 211H in plan view.
  • the positions of the barrier BR and the slit SL can be moved more finely than the electrode interval BP.
  • the positions of the barrier BR and the slit SL are set to the electrode interval. It can be moved at equal intervals by half of BP.
  • FIG. 13 is a diagram illustrating angular characteristics of luminance of the stereoscopic display device 1 when the barrier lighting state is fixed.
  • the luminance AL is a luminance observed at an angle ⁇ ⁇ 0 when the right-eye image is displayed in black and the left-eye image is displayed in white.
  • Brightness A R in the same screen, a luminance observed at an angle theta> 0.
  • the luminance BL is a luminance observed at an angle ⁇ ⁇ 0 when the right-eye image is displayed in white and the left-eye image is displayed in black.
  • Luminance B R in the same screen, a luminance observed at an angle theta> 0.
  • the luminance CL is a luminance observed at an angle ⁇ ⁇ 0 when both the right-eye image and the left-eye image are displayed in black.
  • Luminance C R is the same screen, a luminance observed at an angle theta> 0.
  • the left-eye crosstalk XT (L) is defined by the following equation.
  • right-eye crosstalk XT (R) is defined by the following equation.
  • FIG. 14 is a diagram illustrating angular characteristics of the left-eye crosstalk XT (L) and the right-eye crosstalk XT (R).
  • Left-eye crosstalk XT (L) takes a minimum value at the angle - [theta] 0, increases as deviated from the angle - [theta] 0.
  • the right-eye crosstalk XT (R) is at an angle + theta 0 takes a minimum value, increases as deviated from the angle + theta 0.
  • 15A and 15B are diagrams showing the crosstalk angle characteristics when the barrier lighting state is changed.
  • the control unit 40 switches the barrier lighting state.
  • the left-eye crosstalk XT (L) changes to XT1 (L)
  • the right-eye crosstalk XT (R) changes to XT1 (R).
  • the control unit 40 switches the barrier lighting state.
  • the left-eye crosstalk XT (L) changes to XT2 (L)
  • the right-eye crosstalk XT (R) changes to XT2 (R).
  • the control unit 40 switches the barrier lighting state, so that the crosstalk value can be kept low even when the observer moves.
  • the barrier lighting state can be switched more finely as the electrode interval BP is smaller.
  • the crosstalk value can be kept lower by finely switching the barrier lighting state. More specifically, the value of crosstalk at an intermediate location between a certain barrier lighting state and the adjacent barrier lighting state can be further reduced.
  • FIG. 16 is a diagram for explaining the relationship between the dimensions of the electrodes and the resistance.
  • the sheet resistance of the electrode 2110 is Rs
  • the width is W
  • the distance from the point P1 to the point P2 is L
  • Figure 17 is a waveform diagram illustrating the case of supplying a signal Vin from the point P1 in FIG. 16, the relationship between the potential V P2 of the signal Vin and the point P2.
  • the resistance R of the electrode 2110 When the resistance R of the electrode 2110 is low, the potential at the point P2 has substantially the same waveform as that of the signal Vin.
  • the resistance R of the electrode 2110 when the resistance R of the electrode 2110 is high, the potential at the point P2 cannot follow the signal Vin. As a result, the light blocking property of the barrier BR decreases, and the value of crosstalk increases.
  • the influence is greater as the distance from the point where the signal is supplied (the distance from the terminal), the display quality varies within the screen.
  • the barrier lighting state can be switched more finely as the electrode interval BP is smaller.
  • the width W of the electrode is reduced, the resistance R increases and the display quality deteriorates.
  • the position of the barrier BR and the position of the slit SL can be moved more finely than the electrode interval BP. Accordingly, the barrier lighting state can be finely switched without reducing the electrode width W.
  • the control unit 40 controls the switch liquid crystal panel 20 so that the area of the barrier BR is larger than the area of the slit SL. More specifically, as shown in FIGS. 10A, 11A, and 12A, the control unit 40 forms a slit SL having a width of 2 ⁇ BP with respect to the barrier BR having a width of 4 ⁇ BP. According to this configuration, the separation characteristics of the switch liquid crystal panel 20 can be enhanced, and the occurrence of crosstalk due to the delay in the response of the liquid crystal layer 23 can be suppressed.
  • FIG. 18 is a plan view for explaining the configuration of the pixel 110 of the display panel 10. More specifically, the pixel 110 includes three sub-pixels 110a, 110b, and 110c arranged along the y direction, and a black matrix BM formed therebetween.
  • the sub-pixels 110a, 110b, and 110c display, for example, red, green, and blue, respectively.
  • the black matrix BM improves the contrast of the display panel 10 by blocking light from the backlight.
  • FIG. 19 is a diagram schematically showing the relationship between the pixel 110 and the barrier BR and the slit SL formed by the switch liquid crystal panel 20.
  • the barrier BR is hatched.
  • the width of the slit SL is approximately equal to the width w1 of the opening of the pixel 110 (portion other than the black matrix BM).
  • the stereoscopic display device 1 has been described above.
  • the example in which the barrier BR and the slit SL are formed by 12 electrodes has been described.
  • This configuration is an example, and the number of electrodes may be four or more. That is, the first electrode group including two or more electrodes capable of independently controlling the potential and the second electrode group including two or more electrodes capable of independently controlling the potential are arranged so as to be shifted from each other in the x direction. If it is, the effect similar to this embodiment can be acquired.
  • [Modification 1 of the first embodiment] 20A, 20B, and 20C are waveform diagrams of signals V A to V L supplied to the respective electrodes for setting the switch liquid crystal panel 20 to the barrier lighting state of FIGS. 10A, 11A, and 12A, respectively. Another example.
  • the control unit 40 sets the electrodes 211B, 211H, 211J, and 211L included in the first electrode group 211 to a constant potential V 0 (for example, GND), and other electrodes (the electrodes 211D and 211F and the electrode 221A).
  • V 0 for example, GND
  • other electrodes the electrodes 211D and 211F and the electrode 221A.
  • V a half width
  • is generated in a portion overlapping the electrodes 211B, 211H, 211J, and 211L in plan view, and a barrier BR is formed.
  • a slit SL is formed because a potential difference does not occur in a portion overlapping the electrodes 211D and 211F in plan view.
  • the control unit 40 sets the electrodes 211B, 211D, 211J, and 211L included in the first electrode group 211 to the constant potential V 0 and applies them to the other electrodes (the electrodes 211F and 211H and the electrodes 221A to 221K).
  • a rectangular alternating voltage that oscillates with a half width Va around the potential V 0 is applied.
  • the positions of the barrier BR and the slit SL can be moved more finely than the electrode interval BP.
  • FIGS. 21A, 21B, and 21C are waveform diagrams of signals V A to V L supplied to the respective electrodes for setting the switch liquid crystal panel 20 to the barrier lighting state of FIGS. 10A, 11A, and 12A, respectively. Yet another example.
  • This modification is obtained by replacing the electrode for applying a constant potential with the electrode for applying a rectangular alternating voltage in the above-described modification 1. That is, in the example illustrated in FIG. 21A, the control unit 40 applies a rectangular alternating voltage that vibrates with a half width Va around the potential V 0 to the electrodes 211B, 211H, 211J, and 211L included in the first electrode group 211, other electrodes are (electrode 211D, 211F and electrodes 221A ⁇ 221K) to a constant potential V 0.
  • is generated in a portion overlapping the electrodes 211B, 211H, 211J, and 211L in plan view, and a barrier BR is formed.
  • a slit SL is formed because a potential difference does not occur in a portion overlapping the electrodes 211D and 211F in plan view.
  • the control unit 40 applies a rectangular alternating voltage that vibrates with a half width Va around the potential V 0 to the electrodes 221A, 221C, 221I, and 221K included in the second electrode group 221.
  • electrodes (electrode 221E, 221G and electrodes 211B ⁇ 211L) is the constant potential V 0.
  • the control unit 40 applies a rectangular alternating voltage that vibrates with a half width Va around the potential V 0 to the electrodes 211B, 211D, 211J, and 211L included in the first electrode group 211, and the other electrodes (electrode 211F, 211H and electrodes 221A ⁇ 221K) has a constant potential V 0.
  • the positions of the barrier BR and the slit SL can be moved more finely than the electrode interval BP.
  • the stereoscopic display device differs from the stereoscopic display device 1 in the driving method of the switch liquid crystal panel 20.
  • the control unit 40 controls the switch liquid crystal panel 20 so that the area of the barrier BR and the area of the slit SL are approximately equal. More specifically, as shown in FIGS. 22A, 23A, and 24A, the control unit 40 forms a slit SL having a width of 3 ⁇ BP with respect to the barrier BR having a width of 3 ⁇ BP.
  • FIG. 22A, FIG. 23A, and FIG. 24A are diagrams schematically showing the barrier lighting state of the switch liquid crystal panel 20 in the present embodiment.
  • 22B, FIG. 23B, and FIG. 24B are waveform diagrams of signals V A to V L that are supplied to the respective electrodes in order to place the switch liquid crystal panel 20 in the barrier lighting state of FIGS. 22A, 23A, and 24A.
  • Detailed description of these drawings is omitted because they are the same as FIGS. 10A and 10B.
  • FIG. 25A is a diagram schematically showing a relationship between the pixel 110 and the barrier BR and the slit SL formed by the switch liquid crystal panel 20.
  • FIG. 25B is a diagram when the barrier BR and the slit SL are moved from FIG. 25A. In FIGS. 25A and 25B, the barrier BR is hatched.
  • the opening of the pixel 110 (the portion other than the black matrix BM of the pixel 110) and the slit SL
  • the area of the overlapping portion can be made constant. Therefore, even if the barrier BR and the slit SL move, the luminance can be kept constant.
  • FIG. 26 is a schematic cross-sectional view showing the configuration of the stereoscopic display device 3 according to the third embodiment of the present invention.
  • the stereoscopic display device 3 is different from the stereoscopic display device 1 in the positional relationship between the display panel 10 and the switch liquid crystal panel 20.
  • the display panel 10 is disposed closer to the observer 90 than the switch liquid crystal panel 20.
  • the switch liquid crystal panel 20 is disposed so that the polarizing plate 24 is on the side opposite to the display panel 10.
  • FIG. 27A is a diagram for explaining the effect of the stereoscopic display device 3.
  • the light from the light source is first separated by the switch liquid crystal panel 20 and then passes through the display panel 10.
  • the light separated by the switch liquid crystal panel 20 is scattered or diffracted when passing through the display panel 10.
  • the separation characteristic is lowered, but the luminance angle characteristic can be smoothed. Thereby, when an observer moves, the brightness
  • FIG. 27B is a diagram for explaining the effect of the stereoscopic display device 1 according to the first embodiment of the present invention.
  • the light from the light source first passes through the display panel 10 and is then separated by the switch liquid crystal panel 20.
  • the switch liquid crystal panel 20 According to the configuration of the stereoscopic display device 1, higher separation characteristics can be obtained and crosstalk can be reduced as compared with the stereoscopic display device 3.
  • FIG. 28 is a graph schematically showing the angular characteristics of the luminance of the stereoscopic display device 1 and the stereoscopic display device 3.
  • a curve C1 shows the angular characteristic of the luminance of the stereoscopic display device 1
  • a curve C3 shows the angular characteristic of the luminance of the stereoscopic display device 3.
  • the stereoscopic display device 1 has a sharper angle change in luminance than the stereoscopic display device 3, but has excellent separation characteristics.
  • the stereoscopic display device 3 is inferior in resolution characteristics, but changes in luminance angle are gradual.
  • a liquid crystal display panel is used as the display panel 10
  • an organic EL (ElectroLuminescence) panel may be used in place of the liquid crystal display panel.
  • a MEMS (Micro Electric Mechanical System) panel may be used in place of the liquid crystal display panel.
  • the MEMS panel can be arranged closer to the viewer 90 than the switch liquid crystal panel 20 as in the third embodiment.
  • the present invention can be used industrially as a stereoscopic display device.

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US10587867B2 (en) 2015-07-14 2020-03-10 Sharp Kabushiki Kaisha Parallax barrier with independently controllable regions
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US10587867B2 (en) 2015-07-14 2020-03-10 Sharp Kabushiki Kaisha Parallax barrier with independently controllable regions
US10587866B2 (en) 2015-07-14 2020-03-10 Sharp Kabushiki Kaisha Parallax barrier with independently controllable regions
DE112016003187B4 (de) 2015-07-14 2021-12-30 Sharp Kabushiki Kaisha Parallaxenbarriere mit unabhängig steuerbaren Regionen
DE112016003143B4 (de) 2015-07-14 2022-01-27 Sharp Kabushiki Kaisha Parallaxenbarriere mit unabhängig steuerbaren Regionen
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US11061247B2 (en) 2018-09-25 2021-07-13 Sharp Kabushiki Kaisha Liquid crystal parallax barrier and method of addressing
WO2020166458A1 (ja) * 2019-02-12 2020-08-20 株式会社ジャパンディスプレイ 表示装置
JP2020134535A (ja) * 2019-02-12 2020-08-31 株式会社ジャパンディスプレイ 表示装置
JP7317517B2 (ja) 2019-02-12 2023-07-31 株式会社ジャパンディスプレイ 表示装置

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