WO2021060011A1

WO2021060011A1 - Parallax barrier, 3d display device, 3d display system, heads-up display, and moving body

Info

Publication number: WO2021060011A1
Application number: PCT/JP2020/034415
Authority: WO
Inventors: 薫草深
Original assignee: 京セラ株式会社
Priority date: 2019-09-26
Filing date: 2020-09-11
Publication date: 2021-04-01

Abstract

A parallax barrier according to the present invention includes a plurality of first barrier sections and a plurality of second barrier sections. A plurality of first light reduction sections are constituted of a plurality of regions which are repeatedly arranged, so as to be staggered by a prescribed length in one horizontal direction, in a direction which is in-plane orthogonal to a parallax direction. The plurality of first light reduction sections and a plurality of second light reduction sections allow image light to pass therethrough at a transmission factor which is less than a first value. A plurality of first light transmission sections and a plurality of second light transmission sections are divided by the plurality of first light reduction sections. The plurality of first light transmission sections allows the image light to pass therethrough at a transmission factor greater than or equal to a second value. The second light reduction sections are symmetrical to the first light reduction sections with respect to the boundary line between the first barrier sections and the second barrier sections. The plurality of second light transmission sections are delineated by the plurality of second light reduction sections.

Description

Paralux barrier, 3D display device, 3D display system, head-up display, and mobile

The present disclosure relates to a paralux barrier, a three-dimensional display device, a three-dimensional display system, a head-up display, and a moving body.

An example of the prior art is described in Patent Document 1.

International Publication No. 2011/058967

The parallax barrier of the present disclosure defines the direction of light rays of the image light of the parallax image emitted from a display panel having a plurality of sub-pixels for displaying the parallax image including the first image and the second image having the parallax with each other. Has a surface to do. The parallax barrier includes a first barrier portion and a second barrier portion. The second barrier portion is arranged adjacent to the first barrier portion in a second direction orthogonal to the first direction, which is the direction of the parallax, in the plane. The first barrier section includes a plurality of first dimming sections and a plurality of first light transmitting sections. The plurality of first dimming units are composed of a plurality of regions that are repeatedly arranged in the second direction with a predetermined length deviated from one direction of the first direction. The plurality of first dimming units transmit the image light with a transmittance of less than the first value. The plurality of first translucent portions are partitioned by the plurality of first dimming portions. The plurality of first transmissive portions transmit the image light with a transmittance of a second value or more higher than the first value. The second barrier portion includes a plurality of second dimming portions and a plurality of second light transmitting portions. The plurality of second dimming sections are symmetrical to the first dimming section with respect to the boundary line between the first barrier section and the second barrier section. The plurality of second dimming units transmit the image light with a transmittance of less than the first value. The plurality of second light transmitting sections are defined by the second dimming section. The plurality of second translucent units transmit the image light with a transmittance of the second value or higher.

The three-dimensional display device of the present disclosure includes a display panel and a parallax barrier. The display panel has a plurality of subpixels that display a parallax image including a first image and a second image that have parallax with each other. The parallax barrier has a surface that defines the light ray direction of the image light of the parallax image emitted from the display panel. The parallax barrier includes a first barrier portion and a second barrier portion. The second barrier portion is arranged adjacent to the first barrier portion in a second direction orthogonal to the first direction, which is the direction of the parallax, in the plane. The first barrier section includes a plurality of first dimming sections and a plurality of first light transmitting sections. The plurality of first dimming units are composed of a plurality of regions that are repeatedly arranged in the second direction with a predetermined length deviated from one direction of the first direction. The plurality of first dimming units transmit the image light with a transmittance of less than the first value. The plurality of first translucent portions are partitioned by the plurality of first dimming portions. The plurality of first transmissive portions transmit the image light with a transmittance of a second value or more higher than the first value. The second barrier portion includes a plurality of second dimming portions and a plurality of second light transmitting portions. The plurality of second dimming sections are symmetrical to the first dimming section with respect to the boundary line between the first barrier section and the second barrier section. The plurality of second dimming units transmit the image light with a transmittance of less than the first value. The plurality of second light transmitting sections are defined by the second dimming section. The plurality of second translucent units transmit the image light with a transmittance of the second value or higher.

The three-dimensional display system of the present disclosure includes a detection device and a three-dimensional display device. The detection device detects the position of the user's eyes. The three-dimensional display device includes a display panel, a parallax barrier, and a controller. The display panel has a plurality of subpixels that display a parallax image including a first image and a second image that have parallax with each other. The parallax barrier has a surface that defines the light ray direction of the image light of the parallax image emitted from the display panel. The parallax barrier includes a first barrier portion and a second barrier portion. The second barrier portion is arranged adjacent to the first barrier portion in a second direction orthogonal to the first direction, which is the direction of the parallax, in the plane. The first barrier section includes a plurality of first dimming sections and a plurality of first light transmitting sections. The plurality of first dimming units are composed of a plurality of regions that are repeatedly arranged in the second direction with a predetermined length deviated from one direction of the first direction. The plurality of first dimming units transmit the image light with a transmittance of less than the first value. The plurality of first translucent portions are partitioned by the plurality of first dimming portions. The plurality of first transmissive portions transmit the image light with a transmittance of a second value or more higher than the first value. The second barrier portion includes a plurality of second dimming portions and a plurality of second light transmitting portions. The plurality of second dimming sections are symmetrical to the first dimming section with respect to the boundary line between the first barrier section and the second barrier section. The plurality of second dimming units transmit the image light with a transmittance of less than the first value. The plurality of second light transmitting sections are defined by the second dimming section. The plurality of second translucent units transmit the image light with a transmittance of the second value or higher. The controller controls the display panel based on the position of the eye detected by the detection device.

The head-up display of the present disclosure includes a three-dimensional display device and a projected member. The three-dimensional display device includes a display panel and a parallax barrier. The display panel has a plurality of subpixels that display a parallax image including a first image and a second image that have parallax with each other. The parallax barrier has a surface that defines the light ray direction of the image light of the parallax image emitted from the display panel. The parallax barrier includes a first barrier portion and a second barrier portion. The second barrier portion is arranged adjacent to the first barrier portion in a second direction orthogonal to the first direction, which is the direction of the parallax, in the plane. The first barrier section includes a plurality of first dimming sections and a plurality of first light transmitting sections. The plurality of first dimming units are composed of a plurality of regions that are repeatedly arranged in the second direction with a predetermined length deviated from one direction of the first direction. The plurality of first dimming units transmit the image light with a transmittance of less than the first value. The plurality of first translucent portions are partitioned by the plurality of first dimming portions. The plurality of first transmissive portions transmit the image light with a transmittance of a second value or more higher than the first value. The second barrier portion includes a plurality of second dimming portions and a plurality of second light transmitting portions. The plurality of second dimming sections are symmetrical to the first dimming section with respect to the boundary line between the first barrier section and the second barrier section. The plurality of second dimming units transmit the image light with a transmittance of less than the first value. The plurality of second light transmitting sections are defined by the second dimming section. The plurality of second translucent units transmit the image light with a transmittance of the second value or higher. The projected member reflects the image light emitted from the three-dimensional display device in the direction of the user's eyes.

The moving body of the present disclosure includes a three-dimensional display device and a head-up display including a projected member. The three-dimensional display device includes a display panel and a parallax barrier. The display panel has a plurality of subpixels that display a parallax image including a first image and a second image that have parallax with each other. The parallax barrier is a surface that defines the light ray direction of the image light of the parallax image emitted from a display panel having a plurality of subpixels for displaying a parallax image including a first image and a second image having parallax with each other. Has. The parallax barrier includes a first barrier portion and a second barrier portion. The second barrier portion is arranged adjacent to the first barrier portion in a second direction orthogonal to the first direction, which is the direction of the parallax, in the plane. The first barrier section includes a plurality of first dimming sections and a plurality of first light transmitting sections. The plurality of first dimming units are composed of a plurality of regions that are repeatedly arranged in the second direction with a predetermined length deviated from one direction of the first direction. The plurality of first dimming units transmit the image light with a transmittance of less than the first value. The plurality of first translucent portions are partitioned by the plurality of first dimming portions. The plurality of first transmissive portions transmit the image light with a transmittance of a second value or more higher than the first value. The second barrier portion includes a plurality of second dimming portions and a plurality of second light transmitting portions. The plurality of second dimming sections are symmetrical to the first dimming section with respect to the boundary line between the first barrier section and the second barrier section. The plurality of second dimming units transmit the image light with a transmittance of less than the first value. The plurality of second light transmitting sections are defined by the second dimming section. The plurality of second translucent units transmit the image light with a transmittance of the second value or higher. The projected member reflects the image light emitted from the three-dimensional display device in the direction of the user's eyes.

The purposes, features, and advantages of this disclosure will become clearer from the detailed description and drawings below.

It is a figure which shows the schematic structure of the 3D display system which concerns on one Embodiment of this disclosure. It is a figure which shows the example which looked at the display panel shown in FIG. 1 from the depth direction. It is a figure which shows the example which looked at the parallax barrier shown in FIG. 1 from the depth direction. It is a figure which shows the example which looked at the display panel and the parallax barrier shown in FIG. 1 from the parallax barrier side with the left eye. It is a figure which shows the example which looked at the display panel and the parallax barrier shown in FIG. 1 from the parallax barrier side with the right eye. It is a figure for demonstrating the relationship between the position of a pupil, a control area, and a left visible area. In the three-dimensional display system shown in FIG. 1, it is a figure for demonstrating the area of the display panel which the user's eyes can see when the user's face is tilted in the roll direction. It is a figure which shows the control area shown in FIG. 6 seen from the depth direction when the area of a display panel is visually recognized through the 1st barrier. It is a figure which shows the control area shown in FIG. 6 seen from the depth direction when the area of a display panel is visually recognized through the 2nd barrier. It is a figure which shows the example of the HUD equipped with the 3D display system shown in FIG. It is a figure which shows the example of the moving body which carries the HUD shown in FIG. It is a figure which shows the parallax barrier which the parallax barrier of this disclosure is based on.

First, the configuration on which the parallax barrier of the present disclosure is based will be described.

As a configuration based on the parallax barrier of the present disclosure, in a three-dimensional display device, a part of the image displayed by the display panel is made visible to one eye of the user, and the other part is made to be visually recognized by the other eye. Therefore, a parallax barrier is used. For example, the paralux barrier is composed of a mask portion arranged so as to be displaced in one horizontal direction in the vertical direction, and an opening portion defined by the mask portion.

In order to make each user's eye visually recognize an appropriate parallax image, the type of image to be displayed in each subpixel of the display panel according to the position and orientation of the user's eye is between the left eye image and the right eye image. Need to switch with. The left eye image and the right eye image are images for being visually recognized by the left eye and the right eye, respectively. In the three-dimensional display device using the ballarax barrier based on the paralux barrier of the present disclosure described above, when the user's eye is rotated in the roll direction, even if the rotation angle is the same, the rotation direction is changed. Correspondingly, the type of image displayed in each subpixel of the display panel must be controlled. That is, the three-dimensional display device has to control the type of image according to the rotation of the user's head, which may increase the processing load.

The present disclosure provides a paralux barrier, a three-dimensional display device, a three-dimensional display system, a head-up display, and a moving body capable of reducing crosstalk generated by rotation of the user's head in the roll direction. To do.

An embodiment of the present disclosure will be described in detail with reference to the drawings. The figures used in the following description are schematic. Therefore, the dimensional ratios on the drawings do not always match the actual ones.

As shown in FIG. 1, the three-dimensional display system 10 according to the embodiment of the present disclosure includes a detection device 1 and a three-dimensional display device 2.

The detection device 1 is configured to detect the positions of the user's left eye (first eye) and right eye (second eye). The detection device 1 is configured to output the detected position to the three-dimensional display device 2. The detection device 1 may include, for example, a camera. The detection device 1 may be configured to capture the user's face with a camera. The detection device 1 may be configured to detect the positions of the left eye and the right eye from the captured image including the image of the face of the user of the camera. The detection device 1 may be configured to detect the positions of the left eye and the right eye as coordinates in three-dimensional space from an image captured by one camera. The detection device 1 may be configured to detect the position of the left eye and the position of the right eye as coordinates in three-dimensional space from images taken by two or more cameras.

The detection device 1 does not have a camera and may be connected to a camera outside the device. The detection device 1 may include an input terminal configured to input a signal from a camera outside the device. The camera outside the device may be directly connected to the input terminal. Cameras outside the device may be indirectly connected to the input terminals via a shared network. The detection device 1 without a camera may include an input terminal configured for the camera to input a video signal. The detection device 1 without a camera may be configured to detect the positions of the left eye and the right eye from the video signal input to the input terminal.

The detection device 1 may include, for example, one or more sensors. The sensor may be an ultrasonic sensor, an optical sensor, or the like. The detection device 1 may be configured to detect the position of the user's head by a sensor. The sensor may be configured to detect the position of the left and right eyes based on the position of the head. The detection device 1 may be configured to detect the positions of the left eye and the right eye as coordinates in three-dimensional space by one or more sensors.

The three-dimensional display system 10 does not have to include the detection device 1. When the three-dimensional display system 10 does not include the detection device 1, the three-dimensional display device 2 may include an input terminal configured to input a signal from a detection device outside the device. A detection device outside the device may be connected to an input terminal. The detection device outside the device may use an electric signal and an optical signal as the transmission signal to the input terminal. The detection device outside the device may be indirectly connected to the input terminal via a shared network. Position coordinates indicating the positions of the left eye and the right eye acquired from a detection device outside the device may be input to the three-dimensional display device 2.

The three-dimensional display device 2 may include an acquisition unit 3, an irradiator 4, a display panel 5, a parallax barrier 6 as an optical element, and a controller 7.

The acquisition unit 3 is configured to acquire the position of the left eye and the position of the right eye detected by the detection device 1.

The irradiator 4 is configured to surfacely irradiate the irradiation light toward the display panel 5. The irradiator 4 may include a light source, a light guide plate, a diffusion plate, a diffusion sheet, and the like. The irradiator 4 may be configured so as to emit the irradiation light by a light source and make the irradiation light uniform in the surface direction of the display panel 5 by a light guide plate, a diffusion plate, a diffusion sheet or the like. The irradiator 4 may be configured to emit uniformed light towards the display panel 5.

As the display panel 5, for example, a display panel such as a transmissive liquid crystal display panel can be adopted. As shown in FIG. 2, the display panel 5 has a plurality of compartmentalized areas on the active area A formed in a planar shape. The active area A is configured to be able to display a parallax image under the control of the controller 7. The parallax image includes a left eye image (first image) and a right eye image (second image) having parallax with respect to the left eye image. The left eye image may be used as the second image, and in this case, the right eye image is used as the first image. The plurality of compartmentalized areas are regions partitioned in a first direction and a second direction orthogonal to the first direction in the plane of the active area A. The first direction may be, for example, the horizontal direction. The second direction may be, for example, the vertical direction. The third direction orthogonal to the first direction and the second direction may be referred to as a depth direction. In the drawings, the horizontal direction is represented as the x-axis direction, the vertical direction is represented as the y-axis direction, and the depth direction is represented as the z-axis direction.

One subpixel corresponds to each of the plurality of partition areas. Therefore, the active area A includes a plurality of subpixels arranged in a grid along the horizontal and vertical directions.

Each subpixel corresponds to any color of R (Red), G (Green), and B (Blue), and one pixel can be configured by combining three subpixels of R, G, and B as a set. .. One pixel can be referred to as one pixel. A plurality of sub-pixels constituting one pixel may be arranged in the horizontal direction. Multiple subpixels of the same color may be aligned vertically. The horizontal length Hpx of each of the plurality of subpixels P may be the same as each other. The vertical length Hpy of each of the plurality of subpixels P may be the same as each other.

The display panel 5 is not limited to the transmissive liquid crystal panel, and other display panels such as organic EL can be used. The transmissive display panel includes a MEMS (Micro Electro Mechanical Systems) shutter type display panel in addition to the liquid crystal panel. Self-luminous display panels include organic EL (electro-luminescence) and inorganic EL display panels. When the display panel 5 is a self-luminous display panel, the three-dimensional display device 2 does not have to include the irradiator 4.

As described above, a plurality of subpixels P continuously arranged in the active area A constitute a subpixel group Pg. For example, one subpixel group Pg includes a predetermined number of subpixels in the horizontal direction and the vertical direction, respectively. The subpixel group Pg of 1 has b sub-pixels P1 to P (2 × n × b) arranged consecutively (2 × n × b), b in the vertical direction and 2 × n in the horizontal direction. Including. The plurality of subpixels P constitute a plurality of subpixel group Pg. The plurality of sub-pixel groups Pg are arranged repeatedly in the horizontal direction. The plurality of subpixel groups Pg from the first row to the mth row are adjacent to positions shifted by one subpixel in one of the horizontal directions in the vertical direction, and are arranged repeatedly. Further, the subpixel group Pg in the (m + 1) th row is arranged at the same position in the horizontal direction as the plurality of subpixel group Pg in the mth row. Further, the subpixel group Pg from the (m + 1) th row to the (2 × m) th row is adjacent to a position shifted by one subpixel in the other horizontal direction in the vertical direction, and this is repeated and arranged. Has been done. In this way, when a plurality of subpixel groups Pg from the first line to the mth line and a plurality of subpixel groups from the (m + 1) line to the (2 × m) line are set as one set, A plurality of sets may be repeatedly arranged in the vertical direction.

In this embodiment, the case of n = 4, b = 1, and m = 3 will be described as an example. As shown in FIG. 2, in the active area A, a subpixel group Pg including eight subpixels P1 to P8 arranged continuously in one row in the vertical direction and eight columns in the horizontal direction is arranged. .. In the example of FIG. 2, the sub-pixel group Pg in the second row is arranged so as to be offset by one sub-pixel in the horizontal direction to the right from the sub-pixel group Pg in the first row. The sub-pixel group Pg in the third row is arranged so as to be offset by one sub-pixel in the horizontal direction to the right from the sub-pixel group Pg in the second row. The sub-pixel group Pg in the fourth row is arranged without being displaced in the horizontal direction from the sub-pixel group Pg in the third row. The subpixel group Pg in the fifth row is arranged so as to be offset by one subpixel group in the horizontal left direction from the subpixel group Pg in the fourth row. The subpixel group Pg in the sixth row is arranged so as to be offset by one subpixel group in the horizontal left direction from the subpixel group Pg in the fifth row. Hereinafter, P1 to P8 will be referred to as subpixel identification information. In FIG. 2, some sub-pixel groups Pg are coded.

A plurality of subpixels P at corresponding positions in all the subpixel group Pg display the same type of image, and the type of the image to be displayed is switched at the same timing. The type of image is a type indicating whether it is a left-eye image or a right-eye image. The plurality of subpixels P constituting the subpixel group Pg of 1 can be displayed by switching between the left eye image and the right eye image. For example, the images displayed on the plurality of subpixels P1 in all the subpixel group Pg are switched at the same timing. The images displayed on the plurality of subpixels P having other identification information in all the subpixel group Pg are switched at the same timing.

The types of images displayed in the plurality of subpixels P constituting the subpixel group Pg of 1 are independent of each other. The plurality of subpixels P constituting the subpixel group Pg can be displayed by switching between the left eye image and the right eye image. For example, the timing at which the plurality of subpixels P1 switch between the left eye image and the right eye image may be the same as or different from the timing at which the plurality of subpixels P2 switch between the left eye image and the right eye image. May be good. The timing at which the other two plurality of subpixels P having different identification information from each other switch between the left eye image and the right eye image may be the same or may be different.

The parallax barrier 6 is configured to define the light ray direction of the image light of the parallax image emitted from the display panel 5. As shown in FIG. 1, the parallax barrier 6 has a surface along the active area A. The parallax barrier 6 is separated from the active area A by a predetermined distance (gap) g. The parallax barrier 6 may be located on the opposite side of the irradiator 4 with respect to the display panel 5. The parallax barrier 6 may be located on the irradiator 4 side of the display panel 5.

As shown in FIG. 3, the parallax barrier 6 includes a plurality of first barrier portions 61 and a plurality of second barrier portions 62.

Each of the plurality of first barrier portions 61 has a plurality of first dimming portions 611 and a plurality of first light transmitting portions 612.

The plurality of first dimming units 611 are configured to transmit image light with a transmittance of less than the first value. The plurality of first dimming units 611 may be composed of a film or plate-like member having a transmittance of less than the first value. The film may be made of resin or may be made of other materials. The plate-shaped member may be made of resin, metal, or the like, or may be made of another material. The plurality of first dimming portions 611 are not limited to the film or plate-shaped member, and may be composed of other types of members. The base material of the plurality of first dimming portions 611 may have a dimming property, and the base material of the plurality of first dimming portions 611 may contain an additive having a dimming property.

The plurality of

regions

611a, 611b, and 611c constituting the plurality of first dimming units 611 are repeatedly arranged in the vertical direction with a predetermined length Ls offset in one horizontal direction. In the example of FIG. 3, the plurality of

regions

611a, 611b, and 611c are arranged in the vertical direction and are displaced by a predetermined length Ls in the horizontal direction. The predetermined length Ls may be a length corresponding to the horizontal length of one subpixel P included in the display panel 5. Specifically, the predetermined length Ls transmits the image light from the image displayed by one subpixel P propagating toward the user's eye, which is a suitable viewing distance D away from the paralux barrier 6. The horizontal length of the area.

The plurality of first dimming units 611 are arranged in the horizontal direction at predetermined intervals (barrier pitch Bp).

The plurality of first translucent units 612 are configured to transmit image light with a transmittance of a second value or more higher than the first value. The plurality of first light transmitting portions 612 may be composed of a film or a plate-like member having a transmittance of the first value or more. The film may be made of a resin, another material, or another material. Further, the plurality of first light transmitting portions 612 may be configured without using any member. In this case, the transmittance of the plurality of first light transmitting portions 612 is approximately 100%.

The plurality of first translucent units 612 are partitioned by a plurality of first dimming units 611. Specifically, the plurality of first light transmitting portions 612 are portions between two plurality of first dimming portions 611 adjacent to each other. Therefore, the

virtual regions

612a, 612b, and 612c constituting the plurality of first translucent portions 612 are arranged in the vertical direction and are displaced by a predetermined length Ls in the horizontal direction.

The plurality of second barrier portions 62 are adjacent to at least one end of the plurality of first barrier portions 61 in the vertical direction. The plurality of second barrier portions 62 may be adjacent to both vertical ends of the plurality of first barrier portions 61. The plurality of second barrier portions 62 have a plurality of second dimming portions 621 and a plurality of second translucent portions 622.

The plurality of second dimming units 621 transmit image light with a transmittance of less than the first value, like the plurality of first dimming units 611. The plurality of second dimming units 621 may be composed of the same members as the plurality of first dimming units 611. Each of the plurality of second dimming sections 621 is symmetrical with the first dimming section 611 with respect to the boundary line between the first barrier section 61 and the second barrier section 62 that are vertically adjacent to each other.

The plurality of second translucent units 622 are configured to transmit image light with a transmittance of a second value or higher, like the plurality of first transmissive units 612. The plurality of second light-transmitting portions 622 may be composed of the same members as the plurality of first light-transmitting portions 612. The plurality of second translucent portions 622 may be configured without using any member. The plurality of second light transmitting sections 622 are partitioned by the plurality of second dimming sections 621. Specifically, the plurality of second translucent portions 622 are portions between two second dimming portions 621 adjacent to each other.

As described above, the parallax barrier 6 includes a plurality of first dimming sections 611 and a plurality of first translucent sections 612, and a plurality of second dimming sections 621 and a plurality of second transmissive sections 622. As a result, a part of the image light emitted from the active area A of the display panel 5 passes through the parallax barrier 6 and reaches the user's eye, and the remaining part of the image light is reduced by the parallax barrier 6. It is lit and difficult to reach the user's eyes. It becomes difficult for the user's eyes to visually recognize a part of the active area and the remaining part of the area.

The area on the active area that each eye of the user sees depends on the position of each eye, the positions of the plurality of first translucent portions 612 and the plurality of second translucent portions 622, and the appropriate viewing distance D. Hereinafter, the region in the active area A that emits the image light propagating to the position of the user's eye is referred to as the visible region 5a. The area in the active area A that emits the image light propagating to the position of the left eye of the user is referred to as the left visible area 5aL (first visible area). The area in the active area A that emits the image light propagating to the position of the user's right eye is referred to as the right visible area 5aR (second visible area).

As shown in FIG. 1, the horizontal lengths Lb, the gap g, the appropriate viewing distance D, and the horizontal lengths of the light-transmitting portions 6b of the plurality of first light-transmitting parts 612 and the plurality of second light-transmitting parts 622. The relationship between the Lb and the horizontal length Lp of the visible region 5a is defined so that the following equations (1) and (2) using the interocular distance E hold.
E: D = (2 × n × Hpx): g formula (1)
D: Lb = (D + g): Lp equation (2)

The suitable viewing distance D is the distance between each of the user's right and left eyes and the parallax barrier 6. The direction of the straight line passing through the right eye and the left eye (inter-eye direction) is the horizontal direction. The inter-eye distance E is the distance between the user's left eye and right eye. The intereye distance E may be, for example, 61.1 mm to 64.4 mm, which is a value calculated by research by the National Institute of Advanced Industrial Science and Technology.

In the left visible region 5aL shown in FIG. 4, as described above, the image light transmitted through the plurality of first translucent portions 612 or the plurality of second translucent portions 622 of the parallax barrier 6 reaches the left eye of the user. This is an area on the active area A that is visible to the user's left eye. The left dimming region 5bL is an region in which the left eye of the user is difficult to see because the image light is dimmed by the plurality of first dimming portions 611 or the second dimming portion 612 of the parallax barrier 6. .. In the example of FIG. 4, the left visible region 5aL includes all of the plurality of subpixels P1 to P4. The left dimming region 5bL includes all of the plurality of subpixels P5 to P8. In FIG. 4, a plurality of sub-pixels displaying a left-eye image are designated by a reference numeral “L”, and a plurality of sub-pixels displaying a right-eye image are designated by a reference numeral “R”.

The right visible region 5aR shown in FIG. 5 is used when the image light transmitted through the plurality of first translucent portions 612 or the plurality of second translucent portions 622 of the parallax barrier 6 reaches the user's right eye. This is an area on the active area A that is visible to the right eye of the person. The plurality of subpixels that emit image light that reaches the right eye are different from the plurality of subpixels that emit image light that reaches the left eye. The right dimming area 5bR is an area in which the image light is dimmed by a plurality of first dimming sections 611 or a plurality of second dimming sections 621 of the parallax barrier 6, making it difficult for the user's right eye to see. Is. In the example of FIG. 5, the right visible region 5aR includes all of the plurality of subpixels P5 to P8. The right dimming region 5bR includes all of the plurality of subpixels P1 to P4. In FIG. 5, a plurality of sub-pixels displaying a left-eye image are designated by a reference numeral “L”, and a plurality of sub-pixels displaying a right-eye image are designated by a reference numeral “R”.

The controller 7 is configured to be connected to each component of the three-dimensional display system 10. The controller 7 is configured to control each of the connected components. The components controlled by the controller 7 include the detection device 1 and the display panel 5. The controller 7 is configured as, for example, a processor. The controller 7 may include one or more processors. A processor may include a general-purpose processor that loads a specific program and performs a specific function, and a dedicated processor that is specialized for a specific process. The dedicated processor may include an application specific integrated circuit (ASIC). The processor may include a programmable logic device (PLD). The PLD may include an FPGA (Field-Programmable Gate Array). The controller 7 may be either a SoC (System-on-a-Chip) in which one or a plurality of processors cooperate, or a SiP (System In a Package). The controller 7 includes a storage unit, and the storage unit may store various types of information, a program for operating each component of the three-dimensional display system 10, and the like. The storage unit may be composed of, for example, a semiconductor memory or the like. The storage unit may function as a work memory of the controller 7.

The controller 7 causes the plurality of sub-pixels P1 to P4 to display the left-eye image and the plurality of sub-pixels P5 to P6 to display the right-eye image, whereby the left-eye and the right-eye are displayed as the left-eye image and the right-eye, respectively. Visualize the image. Specifically, the left eye visually recognizes all of the left eye images displayed on the plurality of subpixels P1 to P4. The right eye visually recognizes all of the right eye images displayed on the plurality of subpixels P5 to P8. Therefore, the user visually recognizes the three-dimensional image with the crosstalk reduced.

Here, the visible region 5a when the user's face is displaced in the horizontal direction will be described.

The left visible region 5aL is determined according to the position of the left eye. For example, as shown in FIG. 6, the left visible region 5aL0 when the left eye is at position 0 includes a plurality of subpixels P1 to P4. When the left eye is at the position "1" displaced by E / (2 × n) (E / 8 in this example) in the horizontal direction from the position "0", the left visible region 5aL1 has a plurality of subpixels P2 to P5. Is included. When the left eye is at the position "2" displaced by 2E / (2 × n) (2E / 8 in this example) in the horizontal direction from the position "0", the left visible region 5aL2 has a plurality of subpixels P3 to P6. Is included. In this way, when the left eye is displaced from the position "0" in the horizontal direction by k × E / (2 × n) (k × E / 8 in this example), the left visible region 5a is left visible. A plurality of subpixels P arranged so as to be offset by k from the plurality of subpixels P included in the region 5aL0 are included.

The right visible region 5aR is similarly determined according to the position of the right eye. The right visible region 5a when the right eye is displaced horizontally by k × E / (2 × n) (k × E / 8 in this example) from the position “4” is included in the right visible region 5aR0. A plurality of subpixels P arranged so as to be offset by k from the plurality of subpixels P are included.

Next, the visible region 5a when the user's face is tilted in the roll direction will be described. When the user's face is tilted in the roll direction, the user's left eye is displaced in the horizontal direction and the vertical direction as shown in FIG. Similarly, the user's right eye is displaced horizontally and vertically. The inclination in the roll direction is an inclination in a plane (xy plane) whose normal direction is the depth direction without changing the position in the depth direction (z-axis direction).

In the following explanation, the position of the user's eyes, which is at an appropriate viewing distance D from the parallax barrier 6 and whose inter-eye direction is horizontal, is set as the standard position. The standard position of the left eye is called the left standard position EL0, and the standard position of the right eye is called the right standard position ER0. The positions of the left eye and the right eye, which are displaced by the rotation of the face in a predetermined direction (for example, counterclockwise direction) in the roll direction with the center of both eyes (inter-eye center) as the axis, are displaced to the left, respectively. It is called position EL1 and right displacement position ER1. The positions of the left eye and the right eye displaced by rotating the face in a direction opposite to a predetermined direction (for example, a clockwise direction) with respect to the center of the eye are referred to as a left displacement position EL2 and a right displacement position ER2.

The controller 7 is configured to control the type of image to be displayed on each subpixel P of the display panel 5 based on the position of the pupil acquired by the acquisition unit 3.

The controller 7 is configured to change the image displayed on at least some of the subpixels when the position of the left eye moves beyond the control boundary. A control boundary is a boundary of control regions adjacent to each other. The control area is displayed in each subpixel P when each subpixel P is controlled to display an image so that the ratio of the area of the image corresponding to the eye to the total area of the visible area 5a is the highest. This is the area where the eye is located, which has the same type of image.

In the example of FIG. 6, the rectangles surrounding "0", "1", "2", ..., "7" are control areas, respectively. In the following, the rectangles containing the identification numbers of "0", "1", "2", ..., "7" are defined as the control area "1", the control area "2", ..., The control area "7". ". As long as the left eye is in the control area "1", the left eye image is displayed in the plurality of subpixels P2 to P5, and the right eye image is displayed in the plurality of subpixels P6 to P8 and P1. The ratio of the area of the left eye image to the total area of the visible region 5aL is the highest. At this time, the right eye is in the control area “4” which is separated from the control area “1” by the inter-eye distance E, and the ratio of the area of the right eye image to the total area of the right visible area 5aR is the highest.

<Control in visual recognition of the display panel through the first barrier>
FIG. 8 shows the depth of each control area when the area of the display panel 5 (in the examples of FIGS. 2 to 5, y1 to y3 and y7 to y9) is visually recognized through the first barrier 61. It is a figure seen from a direction.

When the user's head rotates counterclockwise (the direction indicated by the arrow B in FIG. 8) and the left eye is displaced from the standard position EL0 to the rotation position EL1, the controller 7 controls the control area in which the left eye is located. Is configured to change from the control area "3" to the control area "4". At this time, since the right eye is displaced from the right standard position ER0 to the rotation position ER1, the controller 7 is configured to maintain the control area in which the right eye is located in the control area “7”. Based on the control area "4" where the left eye is located and the control area "7" where the right eye is located, the controller 7 is used for each subpixel of the area of the display panel 5 which is visually recognized through the first barrier 61. It is configured to display a left-eye image or a right-eye image.

For example, as will be understood with reference to FIG. 6, when the left eye is located in the control area “4”, the left visible area 5aL includes a plurality of subpixels P5 to P8. On the other hand, when the right eye is located in the control area "7", the right visible area 5aR includes a plurality of subpixels P1 to P3 and P8. The controller 7 may display the left eye image on a plurality of subpixels P5 to P7 included in the left visible region 5aL and not included in the right visible region 5aR. The controller 7 may display the right eye image on a plurality of subpixels P1 to P3 included in the right visible region 5aR and not included in the left visible region 5aR. The controller 7 may display a black image on a plurality of subpixels P8 included in the left visible region 5aL and included in the right visible region 5aR, or may display a priority eye image. The priority eye image may be either a left eye image or a right eye image, and may be, for example, an image corresponding to the dominant eye.

When the user's head rotates clockwise (the direction indicated by the arrow C in FIG. 8) and the left eye is displaced from the standard position EL0 to the rotation position EL2, the control area in which the left eye is located is the control area " The control area "1" is changed from "3". At this time, since the right eye is displaced from the right standard position ER0 to the rotation position ER2, the control area in which the right eye is located is changed from the control area “7” to the control area “2”. The controller 7 causes each subpixel to display a left eye image or a right eye image based on the control area “1” in which the left eye is located and the control area “2” in which the right eye is located.

For example, as will be understood with reference to FIG. 6, when the left eye is located in the control area “1”, the left visible area 5aL includes a plurality of subpixels P2 to P5. On the other hand, when the right eye is located in the control area "2", the right visible area 5aR includes a plurality of subpixels P3 to P6. The controller 7 may display the left eye image on a plurality of subpixels P2 included in the left visible region 5aL and not included in the right visible region 5aR. The controller 7 may display the right eye image on a plurality of subpixels P6 included in the right visible region 5aR and not included in the left visible region 5aR. The controller 7 may display a black image on a plurality of subpixels P3 to P5 included in the left visible region 5aL and included in the right visible region 5aR, or may display a priority eye image.

As described above, in the visual recognition of the display panel through the first barrier 61, when the user's head is rotated counterclockwise, the inter-eye distance E is larger than when the user's head is rotated at the same angle clockwise. The horizontal component, i.e., the distance between the control regions is reduced. As a result, the area that is the left visible region 5aL and the right visible region 5aR becomes large, and the area of at least one of the left eye image that the left eye sees and the right eye image that the right eye sees becomes small. Therefore, it becomes difficult for the user to make the three-dimensional image appropriate. In other words, when the user's head is rotated clockwise, the difficulty in visually recognizing the three-dimensional image can be reduced as compared with the case where the user's head is rotated at an angle equal to counterclockwise.

<Control in visual recognition of the display panel via the second barrier>
FIG. 9 is a view of each control region viewed from the depth direction when the region of the display panel 5 (rows y4 to y6 in the examples of FIGS. 2 to 5) is visually recognized through the second barrier 62. ..

When the user's head rotates counterclockwise (the direction indicated by the arrow B in FIG. 9) and the left eye is displaced from the standard position EL0 to the rotation position EL1, the control area in which the left eye is located is the control area. The control area is changed from "3" to "0". At this time, since the right eye is displaced from the right standard position ER0 to the rotation position ER1, the control area in which the right eye is located is changed from the control area “7” to the control area “1”. Based on the control area "0" where the left eye is located and the control area "1" where the right eye is located, the controller 7 is used for each subpixel of the area of the display panel 5 which is visually recognized through the second barrier 61. Display the left eye image or the right eye image.

For example, as understood with reference to FIG. 6, when the left eye is located in the control area “0”, the left visible area 5aL includes a plurality of subpixels P1 to P4. On the other hand, when the right eye is located in the control area "1", the right visible area 5aR includes a plurality of subpixels P2 to P5. The controller 7 may display the left eye image on a plurality of subpixels P1 included in the left visible region 5aL and not included in the right visible region 5aR. The controller 7 may display the right eye image on a plurality of subpixels P5 included in the right visible region 5aR and not included in the left visible region 5aR. The controller 7 may display a black image on a plurality of subpixels P2 to P4 included in the left visible region 5aL and included in the right visible region 5aR, or may display a priority eye image.

When the user's head rotates clockwise (the direction indicated by the arrow C in FIG. 9) and the left eye is displaced from the standard position EL0 to the rotation position EL2, the control area in which the left eye is located is the control area " It is maintained at "3". At this time, since the right eye is displaced from the right standard position ER0 to the rotation position ER2, the control area in which the right eye is located is changed from the control area “7” to the control area “6”. The controller 7 causes each subpixel to display a left eye image or a right eye image based on the control area “3” where the left eye is located and the control area “6” where the right eye is located.

For example, as will be understood with reference to FIG. 6, when the left eye is located in the control area “3”, the left visible area 5aL includes a plurality of subpixels P4 to P8. On the other hand, when the right eye is located in the control area "6", the right visible area 5aR includes a plurality of subpixels P1, P2, P7, and P8. Therefore, the controller 7 may display the left eye image on a plurality of subpixels P4 to P6 included in the left visible region 5aL and not included in the right visible region 5aR. The controller 7 may display the right eye image on a plurality of subpixels P1, P2, and P7 included in the right visible region 5aR and not included in the left visible region 5aR. The controller 7 may display a black image on a plurality of subpixels P8 included in the left visible region 5aL and included in the right visible region 5aR, or may display a priority eye image.

In the visual recognition of the display panel through the second barrier 62, when the user's head is rotated clockwise, the horizontal component of the inter-eye distance E is compared with the case where the user's head is rotated at the same angle counterclockwise. That is, the distance between the control areas becomes shorter. As a result, the area that is the left visible region 5aL and the right visible region 5aR becomes large, and the area of at least one of the left eye image that the left eye sees and the right eye image that the right eye sees becomes small. Therefore, it becomes difficult for the user to make the three-dimensional image appropriate. In other words, when the user's head is rotated counterclockwise, the difficulty in visually recognizing the three-dimensional image can be reduced as compared with the case where the user's head is rotated at an angle equal to clockwise.

Summarizing the above, in the visual recognition of the display panel 5 through the first barrier 61, when the user's head is rotated clockwise, a three-dimensional image is compared with the case where the user's head is rotated at an angle equal to counterclockwise. The difficulty of seeing can be reduced. On the other hand, in the visual recognition of the display panel 5 through the second barrier 62, when the user's head is rotated counterclockwise, the three-dimensional image is visually recognized as compared with the case where the user's head is rotated at an angle equal to clockwise. Difficulty can be reduced.

That is, when the head is rotated counterclockwise, it may be difficult to see the display panel 5 through the first barrier 61, but the display panel 5 is visually recognized through the second barrier 62. Difficulty can be reduced. When the head is rotated clockwise, it may be difficult to see the display panel 5 through the second barrier 62, but it is difficult to see the display panel 5 through the first barrier 61. Can be reduced. Therefore, when the user's head is rotated in any direction, the difficulty in visually recognizing the three-dimensional image is reduced in the visual recognition of the display panel 5 through either the first barrier 61 or the second barrier 62. sell. In addition, the human eye may have a characteristic that it is easier to recognize a properly viewed three-dimensional image than an image that cannot be properly viewed. Therefore, according to the paralux barrier 6 of the present embodiment, the three-dimensional display device 2 is relatively appropriate as it is visually recognized through the first barrier 61 or the second barrier 62 regardless of the direction in which the head is rotated. 3D image can be recognized.

The parallax barrier 60 based on the parallax barrier of the present disclosure shown in FIG. 12 has a plurality of first barrier portions 61 and a plurality of second barrier portions that are vertically adjacent to each other and are symmetrical with respect to the boundary line. Does not have 62. The plurality of rectangular regions constituting the dimming portion 601 of the conventional paralux barrier 60 are displaced by a predetermined length in one horizontal direction in the vertical direction from one end to the other end of the paralux barrier 60. It is arranged repeatedly up to the part. The plurality of rectangular regions constituting the translucent portion 602 defined by the dimming portion 601 are deviated by a predetermined length in one horizontal direction, and repeat from one end to the other end of the parallax barrier 60. Are arranged. Therefore, when the user's head is rotated clockwise or counterclockwise (clockwise in the example of FIG. 12), the visibility of the display panel 5 is increased, and conversely (in FIG. 12). When rotated counterclockwise in the example, the difficulty in visually recognizing the display panel 5 is reduced. Therefore, when the user's head is rotated in one direction (clockwise in the example of FIG. 12), the difficulty in visually recognizing the display panel 5 is not reduced. Compared to the parallax barrier 60 on which the parallax barrier of the present disclosure is based, by using the parallax barrier 6 of the present embodiment described above, the three-dimensional display device 2 has a head in which direction. Even if it is rotated, it has the effect of being able to recognize a relatively appropriate three-dimensional image.

Although the above-described embodiment has been described as a representative example, it will be apparent to those skilled in the art that many modifications and substitutions can be made within the spirit and scope of the present disclosure. Therefore, the present disclosure should not be construed as limiting by the embodiments described above, and various modifications and modifications can be made without departing from the claims. For example, it is possible to combine the plurality of constituent blocks described in the embodiments and examples into one, or to divide one constituent block into one.

As shown in FIG. 10, the three-dimensional display device 2 can be mounted on the head-up display 100. The head-up display 100 is also referred to as a HUD (Head Up Display) 100. The HUD 100 includes a three-dimensional display device 2, an optical member 110, and a projected member 120 having a projected surface 130. The HUD 100 causes the image light emitted from the three-dimensional display device 2 to reach the projected member 120 via the optical member 110. The HUD 100 causes the image light reflected by the projected member 120 to reach the left eye and the right eye of the user. That is, the HUD 100 advances the image light from the three-dimensional display device 2 to the left eye and the right eye of the user along the optical path 140 indicated by the broken line. The user can visually recognize the image light that has arrived along the optical path 140 as a virtual image 150. The three-dimensional display device 2 can provide stereoscopic vision according to the movement of the user by controlling the display according to the positions of the left eye and the right eye of the user.

As shown in FIG. 11, the three-dimensional display device 2, the three-dimensional display system 10, and the HUD 100 may be mounted on the moving body 20. A part of the configuration of the HUD 100 may be used in combination with other devices or parts included in the moving body 20. For example, the moving body 20 may also use the windshield as the projected member 120. Another device or component included in the moving body 20, which is also used as a part of the configuration of the HUD 100, may be referred to as a HUD module.

The "moving body" in the present disclosure includes vehicles, ships, and aircraft. "Vehicles" in the present disclosure include, but are not limited to, automobiles and industrial vehicles, and may include railroad vehicles, living vehicles, and fixed-wing aircraft traveling on runways. Automobiles include, but are not limited to, passenger cars, trucks, buses, motorcycles, trolley buses and the like, and may include other vehicles traveling on the road. Industrial vehicles include industrial vehicles for agriculture and construction. Industrial vehicles include, but are not limited to, forklifts and golf carts. Industrial vehicles for agriculture include, but are not limited to, tractors, cultivators, transplanters, binders, combines, and mowers. Industrial vehicles for construction include, but are not limited to, bulldozers, scrapers, excavators, cranes, dump trucks, and road rollers. Vehicles include those that run manually. The classification of vehicles is not limited to the above. For example, an automobile may include an industrial vehicle that can travel on the road and may include the same vehicle in multiple categories. Ships in the present disclosure include marine jets, boats and tankers. Aircraft in the present disclosure include fixed-wing aircraft and rotary-wing aircraft.

The following embodiments are possible in this disclosure.

According to the embodiment of the present disclosure, it is possible to reduce the processing load related to the control of the image type due to the rotation of the user's eye in the roll direction.

This disclosure can be implemented in various other forms without departing from its spirit or key characteristics. Therefore, the above-described embodiment is merely an example in all respects, and the scope of the present disclosure is shown in the claims and is not bound by the text of the specification. Furthermore, all modifications and changes that fall within the scope of claims are within the scope of the present disclosure.

1 Detection device 2 3D display device 3 Acquisition unit 4 Irradiator 5 Display panel 6 Paralux barrier 7 Controller 10 3D display system 20 Moving object 51 Active area 51a Visible area 51aL Left visible area 51aR Right visible area 51bL Left dimming area 51bL Right dimming area 61 1st barrier part 62 2nd barrier part 100 Head-up display 110 Optical member 120 Projected member 130 Projected surface 140 Optical path 150 Virtual image 611 1st dimming part 612 1st translucent part 621 1st dimming Optical section 622 Second

translucent section

611a, 611b, 611c Region of the

first dimming section

612a, 612b, 612c Region of the first dimming section

Claims

A parallax barrier having a surface that defines the direction of light rays of the image light of the parallax image emitted from a display panel having a plurality of subpixels for displaying a parallax image including a first image and a second image having parallax with each other. There,
It includes a first barrier portion and a second barrier portion arranged adjacent to the first barrier portion in a second direction orthogonal to the first direction, which is the direction of the parallax, in the plane.
The first barrier portion is
In the second direction, a plurality of first reductions that are composed of a plurality of regions that are repeatedly arranged in one direction of the first direction with a predetermined length deviated and transmit the image light with a transmittance of less than the first value. Hikaribe and
A first translucent portion that transmits the image light with a transmittance of a second value or more higher than the first value, which is partitioned by the plurality of first dimming portions, is included.
The second barrier portion is
A plurality of second reductions that are symmetrical to the first dimming portion and transmit the image light with a transmittance of less than the first value with respect to the boundary line between the first barrier portion and the second barrier portion. Hikaribe and
A parallax barrier including a plurality of second translucent portions that transmit the image light with a transmittance of the second value or higher, which is defined by the plurality of second dimming portions.
The parallax barrier according to claim 1, wherein the second barrier portion is adjacent to the first barrier portion at both ends of the second direction.
The parallax barrier according to claim 1 or 2, wherein the predetermined length is a length corresponding to the length of one subpixel of the display panel in the first direction.
A three-dimensional display device including a display panel and a parallax barrier.
The display panel has a plurality of subpixels for displaying a parallax image including a first image and a second image having parallax with each other.
The parallax barrier is a parallax barrier having a surface that defines the light ray direction of the image light of the parallax image emitted from the display panel.
It includes a first barrier portion and a second barrier portion arranged adjacent to the first barrier portion in a second direction orthogonal to the first direction, which is the direction of the parallax, in the plane.
The first barrier portion is
In the second direction, a plurality of first reductions that are composed of a plurality of regions that are repeatedly arranged in one direction of the first direction with a predetermined length deviated and transmit the image light with a transmittance of less than the first value. Hikaribe and
It has a first translucent portion that transmits the image light with a transmittance of a second value or more higher than the first value, which is partitioned by the plurality of first dimming portions.
The second barrier portion is
A plurality of second reductions that are symmetrical to the first dimming portion and transmit the image light with a transmittance of less than the first value with respect to the boundary line between the first barrier portion and the second barrier portion. Hikaribe and
A three-dimensional display device including a second translucent unit that transmits the image light with a transmittance of the second value or higher, which is defined by the plurality of second dimming units.
A three-dimensional display system including a detection device and a three-dimensional display device.
The detection device detects the position of the user's eyes and
The three-dimensional display device includes a display panel, a parallax barrier, and a controller.
The display panel has a plurality of subpixels for displaying a parallax image including a first image and a second image having parallax with each other.
The parallax barrier is a parallax barrier having a surface that defines the light ray direction of the image light of the parallax image emitted from the display panel.
It includes a first barrier portion and a second barrier portion arranged adjacent to the first barrier portion in a second direction orthogonal to the first direction, which is the direction of the parallax, in the plane.
The first barrier portion is
In the second direction, a plurality of first reductions that are composed of a plurality of regions that are repeatedly arranged in one direction of the first direction with a predetermined length deviated and transmit the image light with a transmittance of less than the first value. Hikaribe and
It has a first translucent portion that transmits the image light with a transmittance of a second value or more higher than the first value, which is partitioned by the plurality of first dimming portions.
The second barrier portion is
A plurality of second reductions that are symmetrical to the first dimming portion and transmit the image light with a transmittance of less than the first value with respect to the boundary line between the first barrier portion and the second barrier portion. Hikaribe and
It has a second translucent portion defined by the plurality of second dimming portions, which transmits the image light with a transmittance of the second value or higher.
The controller is a three-dimensional display system that controls the display panel based on the position of the eye detected by the detection device.
A head-up display equipped with a three-dimensional display device and a projected member.
The three-dimensional display device includes a display panel and a parallax barrier.
The display panel has a plurality of subpixels for displaying a parallax image including a first image and a second image having parallax with each other.
The parallax barrier is a parallax barrier having a surface that defines the light ray direction of the image light of the parallax image emitted from the display panel.
It includes a first barrier portion and a second barrier portion arranged adjacent to the first barrier portion in a second direction orthogonal to the first direction, which is the direction of the parallax, in the plane.
The first barrier portion is
In the second direction, a plurality of first reductions that are composed of a plurality of regions that are repeatedly arranged in one direction of the first direction with a predetermined length deviated and transmit the image light with a transmittance of less than the first value. Hikaribe and
It has a first translucent portion that transmits the image light with a transmittance of a second value or more higher than the first value, which is partitioned by the plurality of first dimming portions.
The second barrier portion is
A plurality of second reductions that are symmetrical to the first dimming portion and transmit the image light with a transmittance of less than the first value with respect to the boundary line between the first barrier portion and the second barrier portion. Hikaribe and
It has a second translucent portion that transmits the image light with a transmittance of the second value or higher, which is defined by the plurality of second dimming portions.
The projected member is a head-up display that reflects the image light emitted from the three-dimensional display device in the direction of the user's eyes.
A moving body including a three-dimensional display device and a head-up display including a projected member.
The three-dimensional display device includes a display panel and a parallax barrier.
The display panel has a plurality of subpixels for displaying a parallax image including a first image and a second image having parallax with each other.
The parallax barrier is a parallax barrier having a surface that defines the light ray direction of the image light of the parallax image emitted from the display panel.
It includes a first barrier portion and a second barrier portion arranged adjacent to the first barrier portion in a second direction orthogonal to the first direction, which is the direction of the parallax, in the plane.
The first barrier portion is
In the second direction, a plurality of first reductions that are composed of a plurality of regions that are repeatedly arranged in one direction of the first direction with a predetermined length deviated and transmit the image light with a transmittance of less than the first value. Hikaribe and
It has a first translucent portion that transmits the image light with a transmittance of a second value or more higher than the first value, which is partitioned by the plurality of first dimming portions.
The second barrier portion is
A plurality of second reductions that are symmetrical to the first dimming portion and transmit the image light with a transmittance of less than the first value with respect to the boundary line between the first barrier portion and the second barrier portion. Hikaribe and
It has a second translucent portion that transmits the image light with a transmittance of the second value or higher, which is defined by the plurality of second dimming portions.
The projected member is a moving body that reflects the image light emitted from the three-dimensional display device in the direction of the user's eyes.