JP2020072405A - Image display unit, image display system, and movable body - Google Patents

Abstract

To provide an image display unit, an image display system, and a movable body that can improve image quality.SOLUTION: An image display unit 10 comprises a display panel 20, a barrier panel 30, and a controller 50. The display panel 20 displays a frame including a right-eye image 23R visually recognized by a user's right eye 5R and a left-eye image 23L visually recognized by the user's left eye 5L. The barrier panel 30 is located superimposed on the display panel 20, and forms a light transmitting part 31T and a light shielding part 31S so as to cause rays of image light related respectively to the right-eye image 23R and left-eye image 23L to reach the user's right eye 5R and left eye 5L. The controller 50 acquires temperature information and controls the display panel 20 and barrier panel 30 based on the temperature information.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to an image display device, an image display system, and a moving body.

  2. Description of the Related Art Conventionally, there is known an image display device that projects a parallax image to both eyes of a user by an active barrier to provide stereoscopic vision. The number of effective pixels of the parallax image projected on the left and right eyes of the user is half or less than the number of effective pixels of the display panel. Therefore, the number of effective pixels in the parallax image is increased by driving the active barrier so that the images projected on the left and right eyes of the user are exchanged between the even frames and the odd frames displayed in one set. The configuration is known (for example, Non-Patent Document 1).

Ayuki Hayashishita, Hideki Kakeya, “Time-Division Multiplexing Parallax Barrier with Sub-Subpixel Phase Shift”, SID 2018 DIGEST, P-88, 1515-1518

  The image display device can switch between the display of the parallax image that provides stereoscopic vision and the display of the planar image that does not provide stereoscopic vision by the active barrier. It is required to improve the image quality of each of the parallax image and the plane image.

  The present disclosure has been made in view of the above points, and an object thereof is to provide an image display device, an image display system, and a moving body that can improve image quality.

  An image display device according to an embodiment of the present disclosure includes a display panel, a barrier panel, and a controller. The display panel displays a frame including a right-eye image viewed by the right eye of the user and a left-eye image viewed by the left eye of the user. The barrier panel is positioned so as to overlap with the display panel, and has a light-transmitting portion and a light-shielding portion so that the image light of each of the right-eye image and the left-eye image reaches the right and left eyes of the user. To form. The controller acquires temperature information and controls the display panel and the barrier panel based on the temperature information.

  An image display system according to an embodiment of the present disclosure includes an image display device and a reflecting member. The image display device includes a display panel, a barrier panel, and a controller. The display panel displays a frame including a right-eye image viewed by the right eye of the user and a left-eye image viewed by the left eye of the user. The barrier panel is positioned so as to overlap with the display panel, and has a light-transmitting portion and a light-shielding portion so that the image light of each of the right-eye image and the left-eye image reaches the right and left eyes of the user. To form. The controller acquires temperature information and controls the display panel and the barrier panel based on the temperature information. The reflection member reflects the image light to reach the left and right eyes of the user.

  A mobile body according to an embodiment of the present disclosure includes an image display system. The image display system includes an image display device and a reflecting member. The image display device includes a display panel, a barrier panel, and a controller. The display panel displays a frame including a right-eye image viewed by the right eye of the user and a left-eye image viewed by the left eye of the user. The barrier panel is positioned so as to overlap with the display panel, and has a light-transmitting portion and a light-shielding portion so that the image light of each of the right-eye image and the left-eye image reaches the right and left eyes of the user. To form. The controller acquires temperature information and controls the display panel and the barrier panel based on the temperature information. The reflection member reflects the image light to reach the left and right eyes of the user.

  According to the image display device, the image display system, and the moving body according to the embodiment of the present disclosure, the image quality can be improved.

It is a side view showing an example of composition of an image display device concerning one embodiment. It is a block diagram showing an example of composition of an image display device concerning one embodiment. It is a top view which shows the structural example of a display panel. It is a top view which shows the structural example of a barrier panel. It is a figure which shows an example of how an image display apparatus sees from a user. It is a figure which shows an example of control of the display panel corresponding to a movement of a user's eyes. It is a figure showing an example of control of a barrier panel corresponding to movement of a user's eyes. It is a figure which shows an example of the sub left eye image contained in a left eye image. It is a figure which shows an example of the sub right eye image contained in a right eye image. It is a figure which shows the example of a display of the display panel in a 1st sub-frame. It is a figure which shows the example of a display of the display panel in a 2nd sub-frame. It is a table which shows the example of the control mode of a controller. It is a figure which shows the structural example of the image display system which concerns on one Embodiment.

  As shown in FIGS. 1 and 2, the image display device 10 according to the embodiment includes a display panel 20, a barrier panel 30, and a controller 50. The image display device 10 may further include a temperature element 40. The temperature element 40 may include a temperature sensor or the like. The image display device 10 may further include a detection device 42. The detection device 42 may include a camera or the like. The image display device 10 may further include a light source 44. The light source 44 may include a light emitting element such as an LED (Light Emission Diode).

  The display panel 20 displays an image visually recognized by the user. The barrier panel 30 causes a part of the image light emitted from the display panel 20 to reach one of the left eye 5L and the right eye 5R of the user, and the other part of the image light of the other of the user. Get to the eyes. That is, the barrier panel 30 divides at least part of the traveling direction of the image light into the left eye 5L and the right eye 5R of the user. The barrier panel 30 may be located closer or farther than the display panel 20 as seen from the user. The image light traveling in the direction limited by the barrier panel 30 can reach the user's left eye 5L and right eye 5R as different image light. As a result, the user can visually recognize different images for each of the left eye 5L and the right eye 5R. That is, the image display device 10 can project the parallax image to both eyes of the user. The parallax image is an image projected on each of the left eye 5L and the right eye 5R of the user, and is an image that gives parallax to both eyes of the user. The user can stereoscopically view the image by viewing the parallax image with the left eye 5L and the right eye 5R. The direction in which parallax is given to both eyes of the user is also called the parallax direction. The parallax direction corresponds to the direction in which the left eye 5L and the right eye 5R of the user are lined up.

  The controller 50 is connected to each component of the image display device 10 and controls each component. The controller 50 may include a first controller 51 and a second controller 52. The first controller 51 may control the display panel 20. The second controller 52 may control the barrier panel 30. The first controller 51 and the second controller 52 may be synchronized. The first controller 51 and the second controller 52 may have a master-slave relationship. One of the first controller 51 and the second controller 52 may be the master and the other may be the slave. The controller 50 may further include a host controller located above the first controller 51 and the second controller 52 and controlling the first controller 51 and the second controller 52.

  The controller 50 is configured as a processor, for example. Controller 50 may include one or more processors. The processor may include a general-purpose processor that loads a specific program and executes 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 50 may be one of a SoC (System-on-a-Chip) in which one or more processors cooperate, and a SiP (System In a Package). The controller 50 may include a storage unit, and the storage unit may store various kinds of information, a program for operating each component of the image display device 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 50.

  The display panel 20 includes a left eye image 23L (see FIG. 8) visually recognized by the user's left eye 5L, a right eye image 23R (see FIG. 9) visually recognized by the user's right eye 5R, and both eyes of the user. The plane image 24 (see FIG. 10) to be visually recognized is displayed. The display panel 20 is assumed to be a liquid crystal device such as an LCD (Liquid Crystal Display).

  As shown in FIG. 3, the display panel 20 may include a first display area 21 and a second display area 22. The first display area 21 has a left-eye visual recognition area 21L visually recognized by the user's left eye 5L and a right-eye visual recognition area 21R visually recognized by the user's right eye 5R. The display panel 20 displays the left-eye image 23L in the left-eye visual recognition area 21L, and displays the right-eye image 23R in the right-eye visual recognition area 21R. That is, the display panel 20 displays the parallax image in the left-eye visual recognition area 21L and the right-eye visual recognition area 21R. The left-eye visual recognition area 21L and the right-eye visual recognition area 21R are aligned in the X-axis direction. In this embodiment, the parallax direction is associated with the X-axis direction. The X-axis direction is also referred to as the horizontal direction or the first direction. The Y-axis direction is also called the vertical direction or the second direction. The left-eye visual recognition area 21L and the right-eye visual recognition area 21R may be positioned with a space therebetween as illustrated in FIG. 3, or may be adjacent to each other. The display panel 20 displays the plane image 24 in the second display area 22.

  The left-eye visual recognition area 21L and the right-eye visual recognition area 21R may extend along the Y-axis direction as shown in FIG. 3, or may extend in a direction inclined at a predetermined angle with respect to the Y-axis direction. May be. In other words, the left-eye visual recognition area 21L and the right-eye visual recognition area 21R may extend along a direction intersecting the parallax direction. The left-eye visual recognition area 21L and the right-eye visual recognition area 21R may be arranged alternately along a predetermined direction including a parallax direction component. The pitch in which the left-eye visual recognition area 21L and the right-eye visual recognition area 21R are alternately arranged is also referred to as a parallax image pitch.

  The barrier panel 30 causes the image light of the left-eye image 23L to reach the left eye 5L of the user and the image light of the right-eye image 23R to reach the right eye 5R of the user. The barrier panel 30 functions as an active barrier.

  As shown in FIG. 4, the barrier panel 30 has a first barrier region 31 and a second barrier region 32. When the barrier panel 30 is located closer to the display panel 20 as viewed from the user, the barrier panel 30 controls the transmittance of image light emitted from the display panel 20. The first barrier region 31 corresponds to the first display region 21 and controls the transmittance of image light emitted from the first display region 21. The first barrier region 31 has a light transmitting portion 31T and a light shielding portion 31S. The light transmitting portion 31T transmits the light that enters the barrier panel 30 from the display panel 20. The translucent portion 31T may transmit light with a transmissivity equal to or higher than the first predetermined value. The light blocking portion 31S blocks light that enters the barrier panel 30 from the display panel 20. The light shielding unit 31S may transmit light with a transmittance equal to or lower than the second predetermined value. The second predetermined value may be, for example, 0% or a value close to 0%. The first predetermined value is larger than the second predetermined value.

  When the barrier panel 30 is located farther than the display panel 20 from the user's perspective, the barrier panel 30 controls the transmittance of light incident on the display panel 20. The translucent portion 31T transmits light that enters the display panel 20. The light blocking portion 31S blocks light that enters the display panel 20. By doing so, the first barrier region 31 controls the transmittance of light incident on the first display region 21. The intensity of the image light emitted from the display panel 20 is controlled based on the intensity of the incident light. The traveling direction of the image light emitted from the display panel 20 is controlled based on the traveling direction of the incident light.

  The translucent unit 31T causes the image light of the left eye image 23L to reach the left eye 5L of the user and the image light of the right eye image 23R to reach the right eye 5R of the user. The light shielding unit 31S does not allow the image light of the left-eye image 23L to reach the right eye 5R of the user and the image light of the right-eye image 23R not reach the left eye 5L of the user. The barrier panel 30 can prevent the user from visually recognizing the right eye image 23R with the right eye 5R and visually recognizing the right eye image 23R with the left eye 5L. The barrier panel 30 may prevent the user from visually recognizing the left eye image 23L with the left eye 5L and visually recognizing the left eye image 23L with the right eye 5R. The light transmitting portion 31T and the light shielding portion 31S define the direction of image light relating to the parallax image including the left eye image 23L and the right eye image 23R.

  The light transmitting portions 31T and the light shielding portions 31S are alternately arranged in the X axis direction. The boundary between the light transmitting portion 31T and the light shielding portion 31S may be along the Y-axis direction as illustrated in FIG. 4, or may be along the direction that is inclined at a predetermined angle with respect to the Y-axis direction. The boundary between the light transmitting portion 31T and the light shielding portion 31S may be along a direction intersecting the parallax direction. In other words, the light-transmitting portions 31T and the light-shielding portions 31S may be arranged alternately along a predetermined direction including the parallax direction component.

  The shapes of the light transmitting portion 31T and the light shielding portion 31S may be determined based on the shapes of the left-eye visual recognition area 21L and the right-eye visual recognition area 21R. Conversely speaking, the shapes of the left-eye visual recognition area 21L and the right-eye visual recognition area 21R may be determined based on the shapes of the light transmitting portion 31T and the light shielding portion 31S.

  The second barrier region 32 corresponds to the second display region 22 and controls the transmittance of image light emitted from the second display region 22.

  The barrier panel 30 is assumed to be composed of a liquid crystal shutter. The liquid crystal shutter can control the light transmittance based on the applied voltage. The liquid crystal shutter may include a plurality of pixels and may control the light transmittance of each pixel. The liquid crystal shutter can form a region having a high light transmittance or a region having a low light transmittance in an arbitrary shape. When the barrier panel 30 is composed of a liquid crystal shutter, the translucent portion 31T may have a transmittance equal to or higher than the first predetermined value. When the barrier panel 30 is composed of a liquid crystal shutter, the light shield 31S may have a transmittance equal to or lower than the second predetermined value.

  The display panel 20 and the barrier panel 30 each have pixels. The pixel arrangement pitch of the display panel 20 and the pixel arrangement pitch of the barrier panel 30 may be the same or different. In the present embodiment, the pixel arrangement pitch of the display panel 20 and the pixel arrangement pitch of the barrier panel 30 are assumed to be the same. In this case, each pixel of the display panel 20 is associated with each pixel of the barrier panel 30. Each pixel of the barrier panel 30 may be controlled by either the light transmitting portion 31T or the light shielding portion 31S. The controller 50 may synchronize the control of each pixel of the display panel 20 and the control of each pixel of the barrier panel 30 associated therewith. By synchronizing the control of each pixel of the display panel 20 and the barrier panel 30 associated with each other, the image quality can be improved.

  At least some of the pixels included in the second display area 22 may display black. The area formed by the pixels displaying black is also referred to as a black display area. The controller 50 may form the light shielding portion 31S in the area corresponding to the black display area included in the second display area 22 in the barrier panel 30. By doing so, the transmittance of image light in the black display region is further reduced. As a result, the black display area looks even blacker for the user.

  In the configuration illustrated in FIG. 5, the barrier panel 30 is located between the display panel 20 and the left eye 5L and the right eye 5R of the user. The barrier panel 30 may be located on the side farther from the display panel 20 as seen from the user. The barrier panel 30 is located along the display panel 20. It can be said that the barrier panel 30 is positioned so as to overlap the display panel 20.

  The distance between the left eye 5L and the right eye 5R of the user and the barrier panel 30 is also referred to as an observation distance and is represented as P. The pitch at which the light transmitting portions 31T and the light shielding portions 31S are alternately arranged in the X-axis direction is also referred to as a barrier pitch. The distance between the left eye 5L and the right eye 5R is also called the interocular distance, and is represented by E. The distance between the barrier panel 30 and the display panel 20 is also called a gap and is represented as g.

  The display panel 20 includes a left-eye visible region 21L that is visible from the user's left eye 5L via the translucent part 31T, and a left-eye non-visible region that is invisible from the user's left eye 5L due to the light shielding part 31S. 22L. The left-eye visible region 21L and the left-eye non-visible region 22L are alternately arranged in the X-axis direction. The position of the boundary between the left-eye visible region 21L and the left-eye non-visible region 22L is the position of the boundary between the transparent portion 31T and the light-shielding portion 31S, and the distance from the barrier panel 30 to both eyes of the user (P ) And the gap (g).

  The display panel 20 includes a right-eye viewing region 21R that can be viewed from the user's right eye 5R through the translucent part 31T, and a right-eye non-viewing region that cannot be viewed from the user's right eye 5R by the light blocking part 31S. 22R and. The right-eye visible region 21R and the right-eye non-visible region 22R are alternately arranged in the X-axis direction. The position of the boundary between the right-eye visible region 21R and the right-eye non-visible region 22R is the position of the boundary between the light-transmitting portion 31T and the light-shielding portion 31S, and the distance from the barrier panel 30 to both eyes of the user (P ) And the gap (g).

  The display panel 20 may display the parallax image such that the left-eye visual recognition area 21L matches the left-eye visual recognition area 21L. The display panel 20 may display the parallax image such that the right-eye visual recognition area 21R matches the right-eye visual recognition area 21R. That is, the display panel 20 is based on the position of the boundary between the light transmitting portion 31T and the light shielding portion 31S, the distance (P) from the barrier panel 30 to both eyes of the user, and the gap (g). Parallax images may be displayed.

  When the left-eye visual recognition area 21L and the right-eye visual recognition area 21R overlap at least in part along the X-axis direction, part of the left-eye image 23L is projected onto the right eye 5R, or part of the right-eye image 23R. May be projected on the left eye 5L, or crosstalk may occur. Crosstalk deteriorates the image quality of the parallax image projected to the user.

  When the left-eye visual recognition area 21L and the right-eye visual recognition area 21R are alternately arranged in the X-axis direction without overlapping each other, the left eye 5L can visually recognize only the left-eye image 23L, and the right eye 5R is the right-eye image 23R. Only visible. In this case, crosstalk can be reduced. The state where the left eye 5L and the right eye 5R can visually recognize only the left eye image 23L and the right eye image 23R, respectively, can be realized when the observation distance (P) is an optimum viewing distance (OVD: Optimal Viewing Distance). The suitable viewing distance is determined based on the inter-eye distance (E), the gap (g), the barrier pitch, and the parallax image pitch. In other words, the controller 50 may control the display panel 20 and the barrier panel 30 so that the observation distance (P) becomes OVD. The controller 50 controls the shapes and positions of the light-transmitting portion 31T and the light-shielding portion 31S in the barrier panel 30 and the right-eye image 23R and the left-eye image 23L displayed on the display panel 20 so that the observation distance (P) becomes OVD. The shape and position may be controlled.

  The detection device 42 acquires the position of the user's eyes. The detection device 42 may detect the position of at least one of the left eye 5L and the right eye 5R of the user. The detection device 42 may include, for example, a camera. The detection device 42 may capture the face of the user with a camera. The detection device 42 may detect the position of at least one of the left eye 5L and the right eye 5R from the image captured by the camera. The detection device 42 may detect the position of at least one of the left eye 5L and the right eye 5R as the coordinates of the three-dimensional space from the captured image of one camera. The detection device 42 may detect the position of at least one of the left eye 5L and the right eye 5R from the images captured by two or more cameras as the coordinates of the three-dimensional space.

  The detection device 42 does not include a camera and may be connected to a camera outside the device. The detection device 42 may include an input terminal for inputting a signal from a camera outside the device. The camera outside the device may be directly connected to the input terminal. The camera outside the device may be indirectly connected to the input terminal via a shared network. The detection device 42 that does not include a camera may include an input terminal through which the camera inputs a video signal. The detection device 42 that does not include a camera may detect the position of at least one of the left eye 5L and the right eye 5R from the video signal input to the input terminal.

  The detection device 42 may include, for example, a sensor. The sensor may be an ultrasonic sensor, an optical sensor, or the like. The detection device 42 may detect the position of the user's head with a sensor, and may detect the position of at least one of the left eye 5L and the right eye 5R based on the position of the head. The detection device 42 may detect the position of at least one of the left eye 5L and the right eye 5R as a coordinate in a three-dimensional space by one or two or more sensors.

  The image display device 10 may not include the detection device 42. When the image display device 10 does not include the detection device 42, the controller 50 may include an input terminal for inputting a signal from an external device of the image display device 10. The external device may be connected to the input terminal. The external device may use an electric signal and an optical signal as a transmission signal to the input terminal. The external device may be indirectly connected to the input terminal via the shared network.

  The controller 50 acquires information regarding the position of the user's eyes from the detection device 42 or an external device. The controller 50 may control the display panel 20 and the barrier panel 30 based on the position of the user's eyes. The control of the display panel 20 and the barrier panel 30 based on the position of the user's eyes is also referred to as an eye track.

  As shown in FIG. 6, it is assumed that the left eye 5L of the user moves in the X-axis direction from the position represented by A to the position represented by A '. The display panel 20 is assumed to have a first pixel 20a, a second pixel 20b, a third pixel 20c, and a fourth pixel 20d arranged in the X-axis direction.

  When the display panel 20 is viewed from the position where the left eye 5L of the user is represented by A through the translucent portion 31T of the barrier panel 30, the left-eye viewing area 21L includes the first pixel 20a, the second pixel 20b, and the second pixel 20b. It is assumed to be included in the third pixel 20c. In this case, the controller 50 can make the left eye 5L visually recognize the left eye image 23L by displaying the left eye image 23L on the first pixel 20a, the second pixel 20b, and the third pixel 20c.

  When the display panel 20 is visually recognized from the position where the left eye 5L of the user is represented by A ′ through the translucent portion 31T of the barrier panel 30, the left eye visually recognizing region 21L ′ includes the second pixel 20b and the third pixel. 20c and the fourth pixel 20d. In this case, the controller 50 can make the left eye 5L visually recognize the left eye image 23L by displaying the left eye image 23L on the second pixel 20b, the third pixel 20c, and the fourth pixel 20d.

  If the left eye 5L moves to the position represented by A ′ and the left eye image 23L is continuously displayed on the first pixel 20a, the second pixel 20b, and the third pixel 20c, the left eye 5L is The right eye image 23R may be visually recognized. As a result, crosstalk may occur. The controller 50 can change the position of the left-eye image 23L displayed on the display panel 20 based on the position of the left eye 5L of the user to reduce crosstalk. The controller 50 changes the position of the right eye image 23R to be displayed on the display panel 20 based on the position of the right eye 5R of the user by the same or similar control as the control based on the position of the left eye 5L to reduce crosstalk. Can be reduced.

  As shown in FIG. 7, it is assumed that the left eye 5L of the user moves in the X-axis direction from the position represented by B to the position represented by B '. The display panel 20 is assumed to have a fifth pixel 20e, a sixth pixel 20f, and a seventh pixel 20g arranged in the X-axis direction. It is assumed that the controller 50 sets the left-eye visual recognition region 21L on the display panel 20 and displays the left-eye image 23L on the fifth pixel 20e, the sixth pixel 20f, and the seventh pixel 20g located in the left-eye visual recognition region 21L.

  The controller 50 forms the light transmitting portion 31T and the light shielding portion 31S in the barrier panel 30 so that the left eye visible region 21L can be visually recognized from the position where the left eye 5L of the user is represented by B. The controller 50 forms the translucent part 31T 'and the light shielding part 31S' in the barrier panel 30 so that the left eye 5L of the user can visually recognize the left eye visible region 21L from the position represented by B '. By doing so, the controller 50 can cause the left eye 5L to visually recognize the left eye visual recognition region 21L regardless of whether the user's left eye 5L is located at B or B '.

  If the left eye 5L is moved to the position represented by B ′ and the light transmitting portion 31T and the light shielding portion 31S are formed, the left eye 5L may visually recognize the right eye image 23R. As a result, crosstalk may occur. The controller 50 can reduce the crosstalk by forming the light transmitting portion 31T and the light shielding portion 31S in the barrier panel 30 based on the position of the left eye 5L of the user.

  The control based on the position of the left eye 5L has been described with reference to FIGS. 6 and 7. The left eye 5L in FIGS. 6 and 7 may be replaced with the right eye 5R. That is, the controller 50 forms the translucent part 31T and the light-shielding part 31S in the barrier panel 30 based on the position of the user's right eye 5R by the control which is the same as or similar to the control based on the left eye 5L and causes crosstalk. Can be reduced.

  By the controller 50 controlling at least one of the display panel 20 and the barrier panel 30 based on the position of the user's eyes, crosstalk can be further reduced.

  The display panel 20 sequentially updates the image to be displayed. When the display panel 20 updates the display image, it can be considered that the display panel 20 is displaying a moving image. The display panel 20 can display a moving image by sequentially displaying a plurality of frames. In the present embodiment, the entire display area of the display panel 20 is regarded as one frame. When the entire display area is one frame, the display panel 20 sequentially displays the frames by sequentially updating the image displayed on the entire display surface. The number of frames displayed on the display panel 20 in a unit time is also referred to as a frame rate. The frame rate may be represented as the number of frames that the display panel 20 displays per second.

  The display panel 20 combines the parallax image including the right-eye image 23R and the left-eye image 23L displayed in the first display area 21 and the planar image 24 displayed in the second display area 22 into one frame. indicate.

  The parallax image includes at least a part of the left-eye image 23L illustrated in FIG. 8 and at least a part of the right-eye image 23R illustrated in FIG. 9.

  The left-eye image 23L illustrated in FIG. 8 includes a first sub-left image 231L and a second sub-left image 232L. The first sub left-eye image 231L and the second sub left-eye image 232L do not overlap each other. In the present embodiment, the first sub-left image 231L and the second sub-left image 232L extend in the Y-axis direction and are arranged alternately in the X-axis direction in the left-eye image 23L. The number of pixels in the X-axis direction of each of the first sub-left image 231L and the second sub-left image 232L is 1/2 or less than the number of pixels in the X-axis direction of the left-eye image 23L. To do. In other words, the full-pixel left-eye image 23L is divided into the first sub-left-eye image 231L and the second sub-left-eye image 232L in which the number of pixels is half or less of the full-pixel. The number of pixels of the first sub left image 231L may be different from the number of pixels of the second sub left image 232L.

  The right eye image 23R illustrated in FIG. 9 includes a first sub right eye image 231R and a second sub right eye image 232R. The first sub-right image 231R and the second sub-right image 232R do not overlap each other. In the present embodiment, the first sub right-eye image 231R and the second sub right-eye image 232R extend in the Y-axis direction and are arranged alternately in the X-axis direction in the right-eye image 23R. The number of pixels in the X-axis direction of each of the first sub-right image 231R and the second sub-right image 232R is 1/2 or less than the number of pixels in the X-axis direction of the right-eye image 23R. To do. In other words, the full-pixel right-eye image 23R is divided into the first sub-right-eye image 231R and the second sub-right-eye image 232R in which the number of pixels is half or less of the full-pixel. The number of pixels of the first sub-right image 231R may be different from the number of pixels of the second sub-right image 232R.

  The first sub-left image 231L and the first sub-right image 231R do not overlap each other. By doing so, the display panel 20 can simultaneously display the first sub-left image 231L and the first sub-right image 231R. The second sub-left image 232L and the second sub-right image 232R do not overlap each other. By doing so, the display panel 20 can simultaneously display the second sub left-eye image 232L and the second sub right-eye image 232R.

  As illustrated in FIG. 10, the controller 50 displays a frame including the first sub left-eye image 231L and the first sub right-eye image 231R in the first display area 21 as one parallax image on the display panel 20. Let The controller 50 causes the display area of the first sub-left image 231L to include the left-eye visual recognition area 21L and the display area of the first sub-right-eye image 231R to include the right-eye visual recognition area 21R in the display panel 20. , Controlling the first barrier region 31 of the barrier panel 30. The controller 50 may control the barrier panel 30 so that the display areas of the first sub-left image 231L and the first sub-right image 231R match the left-eye visual recognition area 21L and the right-eye visual recognition area 21R. The controller 50 may control the barrier panel 30 so that the left-eye visual recognition area 21L and the right-eye visual recognition area 21R include the respective display areas of the first sub-left image 231L and the first sub-right-eye image 231R.

  As shown in FIG. 11, the controller 50 displays on the display panel 20 a frame including the second sub left-eye image 232L and the second sub right-eye image 232R as one parallax image in the first display area 21. Let In the controller 50, the display area of the second sub left-eye image 232L includes the left-eye visual recognition area 21L and the display area of the second sub-right-eye image 232R includes the right-eye visual recognition area 21R in the display panel 20. , Controlling the first barrier region 31 of the barrier panel 30. The controller 50 may control the barrier panel 30 so that the display areas of the second sub left-eye image 232L and the second sub right-eye image 232R match the left-eye visual recognition area 21L and the right-eye visual recognition area 21R. The controller 50 may control the barrier panel 30 such that the left-eye visual recognition area 21L and the right-eye visual recognition area 21R include the respective display areas of the second sub-left image 232L and the second sub-right image 232R.

  When the user views the frame of FIG. 10 and the frame of FIG. 11 independently, the user visually recognizes one of the first sub-left image 231L and the second sub-left image 232L as the left-eye image 23L. To do. The user visually recognizes one of the first sub-right image 231R and the second sub-right image 232R as the right-eye image 23R. In this case, the number of pixels in the X-axis direction of each of the left-eye image 23L and the right-eye image 23R visually recognized by the user is 1/2 times or less of the full pixel.

  When the user can see the frame of FIG. 10 and the frame of FIG. 11 together, the user can generate the left-eye image 23L that is the combination of the first sub-left image 231L and the second sub-left image 232L. Can be seen. The left-eye image 23L visually recognized by the user may have larger pixels than each of the first sub-left image 231L and the second sub-left image 232L. The left-eye image 23L visually recognized by the user may be full pixels. The user can visually recognize the right eye image 23R obtained by combining the first sub right eye image 231R and the second sub right eye image 232R. The right-eye image 23R visually recognized by the user may have larger pixels than each of the first sub-right image 231R and the second sub-right image 232R. The right-eye image 23R visually recognized by the user may be full pixels.

  The controller 50 displays the frame of FIG. 10 and the frame of FIG. 11 as two continuous frames, and controls the display panel 20 and the barrier panel 30 so that the user can visually recognize them. By doing so, the user can visually recognize the afterimage of the first frame and the image of the second frame as a single image. As a result, in one embodiment, the user can recognize that the full-pixel left-eye image 23L and the full-pixel right-eye image 23R are both displayed. The image synthesis using the afterimage in the user's eyes is also called human synthesis. The control of synthesizing the parallax images by the afterimage and allowing the user to visually recognize the parallax images is also referred to as parallax image synthesis display.

  When displaying the frame of FIG. 10 and the frame of FIG. 11 as two continuous frames, the controller 50 displays the portion located in the first display area 21 as two subframes. The sub-frame includes a parallax image. Of the frame shown in FIG. 10, the portion located in the first display area 21 is also referred to as a first subframe. The portion of the frame shown in FIG. 11 located in the first display area 21 is also referred to as a second subframe. The controller 50 displays the frames so that one frame includes two subframes. That is, the controller 50 displays the two frames continuously displayed in the first display area 21 as one parallax image frame including the first subframe and the second subframe. The controller 50 may control the first barrier region 31 in accordance with the parallax image displayed in the first display region 21. The controller 50 may control the parallax image displayed in the first display region 21 in accordance with the right-eye visual recognition region 21R and the left-eye visual recognition region 21L formed by the first barrier region 31.

  The controller 50 may display the second sub left-eye image 232L in the area where the first sub right-eye image 231R was displayed at the timing of changing the display from the first sub-frame to the second sub-frame. The controller 50 may display the second sub right-eye image 232R in the region where the first sub left-eye image 231L was displayed at the same timing. By doing so, the display positions of the left-eye image 23L and the right-eye image 23R can be exchanged. The display position of the left-eye image 23L is included in the display attribute of the left-eye image 23L. The display position of the right eye image 23R is included in the display attributes of the right eye image 23R.

  The controller 50 displays the plane image frame including the plane image 24 in the portion located in the second display area 22 among the displayed frames. The controller 50 controls the second barrier area 32 of the barrier panel 30 in accordance with the plane image 24 displayed in the second display area 22.

  When displaying the frame of FIG. 10 and the frame of FIG. 11 as two continuous frames, the controller 50 controls the portion located in the second display area 22 as two continuous planar image frames.

  One frame is simultaneously displayed in the first display area 21 and the second display area 22. That is, the frame rate in the portion displayed in the first display area 21 and the frame rate in the portion displayed in the second display area 22 are the same. The frame rate of the sub-frame of the parallax image frame displayed in the first display area 21 is the same as the frame rate of the planar image frame displayed in the second display area 22. In other words, the frame rate of the parallax image frame displayed in the first display area 21 is 1/2 times the frame rate of the plane image frame displayed in the second display area 22.

  The image display device 10 according to the present embodiment allows each eye of the user to visually recognize a parallax image with less pixel deterioration from a full pixel in the first display area 21, and the user in the second display area 22. It is possible to visually recognize the planar image 24 having a large frame rate. As a result, the image quality of the image display device 10 is improved.

  The controller 50 controls the light-transmitting portion 31T and the light-shielding portion 31S of the barrier panel 30 so that the right-eye visual recognition area 21R is formed in the first display area 21 in each of the first subframe and the second subframe. The controller 50 may control the barrier panel 30 so that the right-eye visual recognition region 21R formed by the first sub-frame and the right-eye visual recognition region 21R formed by the second sub-frame do not overlap each other. The controller 50 controls the translucent portion 31T and the light shielding portion 31S of the barrier panel 30 so that the left-eye visual recognition area 21L is formed in the first display area 21 in each of the first subframe and the second subframe. The controller 50 may control the barrier panel 30 so that the left-eye visual recognition area 21L formed by the first sub-frame and the left-eye visual recognition area 21L formed by the second sub-frame do not overlap each other. The controller 50 may display the right eye image 23R and the left eye image 23L on the display panel 20 in accordance with the formed right eye visual recognition area 21R and left eye visual recognition area 21L.

  In the present embodiment, while displaying one parallax image frame, the controller 50 assumes that the position of the user's eyes is the same until displaying a new parallax image frame, and the display panel 20 and the barrier. The panel 30 may be controlled. That is, when the positions of the eyes of the user are different between the first subframe and the second subframe, the right-eye visual recognition region 21R may be formed assuming that the positions of the eyes of the respective subframes are the same.

  When displaying the second subframe included in the same parallax image frame subsequent to the first subframe, the controller 50 determines the right eye in the second subframe based on the position of the right eye visual recognition region 21R in the first subframe. The position of the visible region 21R may be determined. In this case, the controller 50 determines the position of the right-eye visual recognition region 21R, not based on the position of the user's eyes.

  When displaying the first sub-frame of a new parallax image frame subsequent to the second sub-frame, the controller 50 does not base the position of the right-eye visual recognition area 21R in the second sub-frame, but recognizes the right-eye visual recognition in the first sub-frame. The position of the region 21R may be determined. In this case, the controller 50 determines the position of the right-eye visual recognition area 21R based on the position of the user's eye, not based on the position of the right-eye visual recognition area 21R in the second subframe displayed immediately before.

  If the user's eye position is different between the first sub-frame and the second sub-frame, the right-eye visual recognition region 21R is formed based on the eye position in each sub-frame. In this case, at least one of the first sub-right image 231R displayed in the first sub-frame and the second sub-right image 232R displayed in the second sub-frame is displaced from the right-eye visual recognition region 21R. It is possible that a phenomenon displayed as a result occurs. This phenomenon is caused by the fact that the first sub-right image 231R and the second sub-right image 232R do not overlap each other. When this phenomenon occurs, crosstalk occurs.

  When the second sub right eye image 232R is changed according to the change in the position of the user's eye, the first sub right eye image 231R and the second sub right eye image 232R overlap at least in part. As a result, the image quality of the right-eye image 23R seen by the user deteriorates.

  The display mode of the right eye image 23R in the right eye visual recognition region 21R has been described above as the description of the right eye 5R, but the display mode of the left eye image 23L in the left eye visual recognition region 21L has been described as the right eye 5R. Can be described as the same as or similar to.

  According to the image display device 10 according to the present embodiment, while one parallax image frame is displayed, the positions of the eyes of the user are controlled to be the same. By doing so, crosstalk is less likely to occur, and the quality of the image seen by the user is less likely to deteriorate.

  The image display device 10 according to an embodiment operates in a room temperature environment of about 20 ° C. to 25 ° C., or operates in a temperature lower or higher than room temperature. The temperature of the image display device 10 itself may change. When the display panel 20 or the barrier panel 30 is a liquid crystal device, the response speed of the liquid crystal changes based on the operating temperature of the liquid crystal device. For example, the lower the operating temperature of the liquid crystal device, the slower the response of the liquid crystal. The higher the operating temperature of the liquid crystal device, the faster the response of the liquid crystal. The image display device 10 may change the operation mode of the liquid crystal device based on the operation temperature of the liquid crystal device.

  When the image display device 10 includes the temperature element 40, the controller 50 may acquire the temperature information from the temperature element 40. The temperature element 40 may include, for example, an element that measures temperature, such as a temperature sensor. The temperature element 40 may include an element such as a thermocouple, a thermistor, or a crystal oscillator, whose characteristics change according to temperature changes. When the temperature element 40 includes a thermocouple, the controller 50 may acquire the thermoelectromotive force generated based on the temperature difference between the reference contact and the temperature measurement contact of the thermocouple as the temperature information. The thermistor transitions between an electrically conductive state and an electrically insulating state with a predetermined temperature as a threshold value. When the temperature element 40 includes a thermistor, the controller 50 may acquire the state of the thermistor as the temperature information. When the temperature element 40 includes a crystal oscillator, the controller 50 may acquire the natural frequency of the crystal oscillator as the temperature information.

  The controller 50 may obtain the temperature information from an external device such as a sensor without including the temperature element 40. The image display device 10 may further include a temperature information acquisition unit that acquires temperature information. The controller 50 may acquire the temperature information from the temperature element 40 or an external device via the temperature information acquisition unit. The external device may be directly connected to the temperature information acquisition unit, or may be indirectly connected via a shared network or the like. The external device may use an electric signal and an optical signal as a transmission signal to the temperature information acquisition unit.

  The temperature information may include information about the temperature of the atmosphere around the image display device 10. The temperature information may include information about the temperature of at least one of the display panel 20 and the barrier panel 30. The temperature information may include information about the temperature of at least a part of the image display device 10.

  The temperature element 40 may be positioned so as to contact at least a part of the image display device 10. The temperature element 40 may be positioned so as to contact at least one of the display panel 20 and the barrier panel 30. The temperature element 40 may be located around the image display device 10. The temperature indicator 40 may be located inside the image display device 10. The external device that detects the temperature may be located so as to be in contact with at least a part of the image display device 10, or may be located around the image display device 10.

  The controller 50 may change the operation mode of the liquid crystal device based on the temperature information. The controller 50 may estimate the operating temperature of the liquid crystal device based on the temperature information and change the operating mode of the liquid crystal device based on the estimation result.

  When the controller 50 executes the composite display of the parallax images, in order to change the light transmitting portion 31T and the light shielding portion 31S in the barrier panel 30, it is required to speed up the response of the liquid crystal device. In order to change the display positions of the right-eye image 23R and the left-eye image 23L on the display panel 20, it is necessary to speed up the response of the liquid crystal device. When the operating temperature of the liquid crystal device is lower than the predetermined temperature, the response of each pixel of the display panel 20 or the barrier panel 30 may not be able to follow the combined display of parallax images. Based on the temperature information, the controller 50 may transit to either a mode in which parallax image composite display is executed or a mode in which parallax image composite display is not executed. The predetermined temperature referred to by the controller 50 to determine whether to execute the composite display is also referred to as a composite display determination temperature. The combined display determination temperature is also referred to as the first temperature. When the temperature corresponding to the temperature information is equal to or higher than the first temperature, the controller 50 may transit to a mode in which parallax image composite display is executed. When the temperature corresponding to the temperature information is lower than the first temperature, the controller 50 may transition to a mode in which parallax image composite display is not executed.

  If the response of each pixel of the display panel 20 or the barrier panel 30 cannot follow the combined display of parallax images, crosstalk may occur. The controller 50 determines whether to perform the parallax image composite display based on the temperature information, so that crosstalk is less likely to occur.

  When the controller 50 executes the eye track, the faster the moving speed of the position of the eyes of the user, the faster the response of the liquid crystal device is required. When the operating temperature of the liquid crystal device is lower than the predetermined temperature, the response of each pixel of the display panel 20 or the barrier panel 30 may not be able to follow the movement of the position of the user's eyes. The controller 50 may transit to either a mode in which eye tracking is performed or a mode in which eye tracking is not performed based on the temperature information. The predetermined temperature referred to by the controller 50 to determine whether to execute eyetrack is also referred to as eyetrack determination temperature. The eye track determination temperature is also referred to as the second temperature. The controller 50 may make a transition to a mode for executing eye tracking when the temperature corresponding to the temperature information is equal to or higher than the second temperature. The controller 50 may transit to a mode in which eye tracking is not executed when the temperature corresponding to the temperature information is lower than the second temperature.

  If the response of each pixel of the display panel 20 or the barrier panel 30 cannot follow the movement of the position of the user's eye, crosstalk may occur. The controller 50 determines whether or not to execute the eye track based on the temperature information, so that crosstalk is less likely to occur.

  Based on the table illustrated in FIG. 12, the controller 50 may transit to any control mode from the first mode to the fourth mode. The first mode corresponds to a control mode in which neither parallax image composite display nor eye track is executed. The second mode corresponds to the control mode in which the eye track is executed but the parallax image composite display is not executed. The third mode corresponds to a control mode in which parallax image synthesis display is executed but eye track is not executed. The fourth mode corresponds to a control mode in which both parallax image composite display and eye track are executed.

  The controller 50 may transition between the first mode and the third mode, or transition between the second mode and the fourth mode based on the comparison between the temperature corresponding to the temperature information and the first temperature. You can do it. The controller 50 may transition between the first mode and the second mode, or transition between the third mode and the fourth mode based on the comparison between the temperature corresponding to the temperature information and the second temperature. You can do it. That is, the controller 50 may make a transition via any one of the second mode and the third mode when making a transition between the first mode and the fourth mode.

  The controller 50 may control either one or both of the display panel 20 and the barrier panel 30 in order to execute the eye track in the second mode and the fourth mode. In the second mode and the fourth mode, the controller 50 controls both the display panel 20 and the barrier panel 30 in order to execute the eye track, the controller 50 controls only the display panel 20, and the barrier panel 30 only. The case of controlling may be included.

  When the image display device 10 includes the light source 44, the light source 44 may be located close to the display panel 20 and the barrier panel 30. The heat generated by the light source 44 may change the operating temperature of the display panel 20 and the barrier panel 30. The light source 44 is located farther from the display panel 20 and the barrier panel 30 when viewed from the user.

  When the display panel 20 is located closer to the user than the barrier panel 30, the barrier panel 30 is located closer to the light source 44 than the display panel 20. In this case, the temperature of the barrier panel 30 tends to be higher than the temperature of the display panel 20. When the temperature of the barrier panel 30 is higher than the temperature of the display panel 20, the response speed of each pixel of the barrier panel 30 may be faster than the response speed of each pixel of the display panel 20. When the barrier panel 30 is located closer to the light source 44 than the display panel 20, the controller 50 may control the barrier panel 30 to perform eye tracking in the second mode and the fourth mode. By doing so, the controller 50 can easily follow the movement of the position of the eye of the user when executing the eye track.

  When the barrier panel 30 is located closer to the user than the display panel 20, the display panel 20 is located closer to the light source 44 than the barrier panel 30. In this case, the temperature of the display panel 20 tends to be higher than the temperature of the barrier panel 30. When the temperature of the display panel 20 is higher than the temperature of the barrier panel 30, the response speed of each pixel of the display panel 20 may be faster than the response speed of each pixel of the barrier panel 30. When the display panel 20 is located closer to the light source 44 than the barrier panel 30, the controller 50 may control the display panel 20 to perform eye tracking in the second mode and the fourth mode. By doing so, the controller 50 can easily follow the movement of the position of the eye of the user when executing the eye track.

  When displaying an image on the display panel 20, the controller 50 controls each pixel of the display panel 20 with an intermediate gradation. The controller 50 may transition each pixel of the barrier panel 30 to one of two states, a white display state having the highest transmittance and a black display state having the lowest transmittance. The controller 50 may control each pixel of the barrier panel 30 with two gradations, a maximum gradation corresponding to a white display state and a minimum gradation corresponding to a black display state. When the pixel is controlled with two gradations, the response of the pixel becomes faster than when the pixel is controlled with half gradation. The response speed of each pixel of the barrier panel 30 may be faster than the response speed of each pixel of the display panel 20. Even when the temperature of the barrier panel 30 is lower than the temperature of the display panel 20, the response speed of each pixel of the barrier panel 30 can approach the response speed of each pixel of the display panel 20. By controlling the barrier panel 30 to perform the eye track, the controller 50 can easily follow the movement of the position of the user's eyes.

  The controller 50 can control the gradation of each pixel of the barrier panel 30 by the magnitude of the voltage applied to each pixel. In the present embodiment, it is assumed that the pixel shifts to a black display state when no voltage is applied to the pixel and the pixel shifts to a white display state when a predetermined voltage is applied to the pixel. The predetermined voltage may be determined by the specifications of the barrier panel 30. The controller 50 can quickly transition to the white display state by applying a voltage higher than a predetermined voltage to each pixel of the barrier panel 30. That is, the controller 50 can control the response speed of each pixel by the voltage applied to each pixel of the barrier panel 30. The controller 50 may make the voltage applied to each pixel of the barrier panel 30 larger than the predetermined voltage when the temperature corresponding to the temperature information is lower than the predetermined temperature. When the controller 50 makes the voltage applied to each pixel of the barrier panel 30 larger than a predetermined voltage, the response speed of each pixel of the barrier panel 30 is less likely to decrease even when the temperature of the barrier panel 30 decreases.

  The frame rate of the parallax image frame displayed as two subframes by the combined display of the parallax images is 1/2 of the frame rate of the subframe. When the controller 50 does not execute the composite display of the parallax images, the controller 50 can display the parallax images at the same frame rate as the frame rate of the subframe. That is, the frame rate of the parallax image when the parallax image composite display is performed is ½ of the frame rate of the parallax image when the parallax image composite display is not performed. When the frame rate of the parallax image is reduced, the image quality of the moving image provided as the parallax image is degraded.

  The controller 50 increases the frame rate of each of the sub-frame, the parallax image frame, and the plane image frame when the temperature corresponding to the temperature information is equal to or higher than the predetermined temperature when the parallax image composite display is performed. You can do it. The controller 50 may double the frame rate, for example. By doing so, the frame rate when the parallax image composite display is executed can be made closer to the frame rate when the parallax image composite display is not executed. As a result, when a moving image is provided as a parallax image, its image quality is less likely to deteriorate. The predetermined temperature referred to by the controller 50 to determine whether to double the frame rate is also referred to as a double speed display determination temperature. The double speed display determination temperature is higher than the first temperature. The controller 50 may increase the frame rate by a predetermined scaling factor based on the temperature information. The controller 50 may double the frame rate or more.

  The controller 50 may display all the pixels of the barrier panel 30 in white when the temperature corresponding to the temperature information is lower than the predetermined temperature. In this case, the controller 50 displays only the plane image 24 on the display panel 20 and allows the user to visually recognize it. By doing so, the deterioration of the image quality of the parallax image due to the slow response speed of each pixel of the barrier panel 30 can be avoided.

  As shown in FIG. 13, the image display system 1 according to the embodiment includes the image display device 10 and the reflection member 60. The image display system 1 displays an image on the image display device 10 and emits the image light. The image light is reflected by the reflecting member 60 along the path indicated by the broken line and reaches the left eye 5L and the right eye 5R of the user. When the image light enters the user's eyes, the user can visually recognize the image displayed on the image display device 10. The user visually recognizes the image light reflected by the reflecting member 60 to visually recognize the image displayed on the image display device 10 as a virtual image 10Q. The virtual image 10Q is positioned ahead of the path indicated by the alternate long and short dash line which extends the path indicated by the broken line connecting the left eye 5L and the right eye 5R of the user and the reflection member 60 to the opposite side of the reflection member 60. To do. The image display system 1 may be a head-up display (HUD). The image display system 1 and the image display device 10 may provide a stereoscopic view to the user by directly looking at the user.

  The image display system 1 according to the present embodiment may be mounted on a mobile body. When the image display system 1 is mounted on a mobile body, the user of the image display system 1 may be a driver or an operator of the mobile body or a passenger. When the image display system 1 is mounted on a mobile body, a part of the configuration of the image display system 1 may be combined with other devices and parts included in the mobile body. For example, the windshield of the moving body may also be used as a part of the configuration of the image display system 1. For example, the reflective member 60 shown in FIG. 1 may be replaced by a mobile windshield.

  When the image display device 10 is mounted on a moving body, the temperature element 40 or an external device for detecting the temperature may be located inside the moving body. When the moving body is a vehicle, the temperature element 40 or the external device for detecting the temperature may be located inside the vehicle. The temperature element 40 or the external device may output temperature information about the temperature inside the moving body or the temperature inside the vehicle.

  The “moving body” in the present disclosure includes a vehicle, a ship, and an aircraft. “Vehicle” in the present disclosure includes, but is not limited to, automobiles and industrial vehicles, and may include railroad vehicles and daily vehicles, and fixed-wing aircraft that travel on a runway. Vehicles include, but are not limited to, passenger cars, trucks, buses, motorcycles, trolleybuses, and the like, and may include other vehicles traveling on roads. 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, tillers, transplanters, binders, combines, and lawnmowers. Industrial vehicles for construction include, but are not limited to, bulldozers, scrapers, excavators, mobile cranes, dump trucks, and road rollers. Vehicles include those that are driven manually. The vehicle classification is not limited to the above. For example, an automobile may include an industrial vehicle that can travel on a road, and the same vehicle may be included in multiple classifications. The vessels in the present disclosure include marine jets, boats, and tankers. The aircraft in the present disclosure includes a fixed-wing aircraft and a rotary-wing aircraft.

  The description has been given under the assumption that the display panel 20 and the barrier panel 30 are liquid crystal devices. In one embodiment, at least one of the display panel 20 and the barrier panel 30 may be a device whose operating speed changes according to operating temperature.

  The configuration according to the present disclosure is not limited to the embodiments described above, and various modifications or changes can be made. For example, the functions and the like included in each component can be rearranged so as not to logically contradict each other, and a plurality of components can be combined into one or divided.

  The diagram illustrating the configuration according to the present disclosure is schematic. The dimensional ratios and the like on the drawings do not always match the actual ones.

  In the present disclosure, the description such as “first” and “second” is an identifier for distinguishing the configuration. The configurations distinguished by the description such as “first” and “second” in the present disclosure can exchange the numbers in the configurations. For example, the first mode can exchange the identifiers "first" and "second" with the second mode. The exchange of identifiers is done simultaneously. Even after exchanging the identifiers, the configurations are distinguished. The identifier may be deleted. The configuration in which the identifier is deleted is distinguished by the code. Based on only the description of the identifiers such as “first” and “second” in the present disclosure, it should not be used as the basis for the interpretation of the order of the configuration and the existence of the identifier with a small number.

  In the present disclosure, the X axis, the Y axis, and the Z axis are provided for convenience of description, and may be interchanged with each other. The configuration according to the present disclosure has been described using the orthogonal coordinate system configured by the X axis, the Y axis, and the Z axis. The positional relationship between the components according to the present disclosure is not limited to the orthogonal relationship.

1 image display system 5L left eye 5R right eye 10 image display device 10Q virtual image 20 display panel 20a-20g 1st-7th pixels 21, 22 1st display area, 2nd display area 21L, 21R left-eye visual recognition area, right-eye Visual recognition area 22L, 22R Left eye non-visibility area, Right eye non-visibility area 23L, 23R Left eye image, Right eye image 231L, 232L 1st sub left eye image, 2nd sub left eye image 231R, 232R 1st sub right eye Image, second sub-right eye image 24 Planar image 30 Barrier panel 31 First barrier region 31T Light transmitting part 31S Light shielding part 32 Second barrier region 40 Temperature element 42 Detection device 44 Light source 50 (51, 52) Controller (first controller) , Second controller)
60 Reflective member

Claims (8)

A display panel that displays a frame including a right-eye image viewed by the right eye of the user and a left-eye image viewed by the left eye of the user,
A barrier panel that is positioned to overlap with the display panel, and that forms a light-transmitting portion and a light-shielding portion so that the image light of each of the right-eye image and the left-eye image reaches the right and left eyes of the user. When,
A controller for controlling the display panel and the barrier panel,
The image display device, wherein the controller acquires temperature information and controls the display panel and the barrier panel based on the temperature information. Further comprising a temperature element whose characteristics change according to temperature,
The image display device according to claim 1, wherein the controller acquires the temperature information based on a characteristic of the temperature element. The controller is
When the temperature corresponding to the temperature information is equal to or higher than the first temperature, two consecutive frames are displayed on the display panel as one parallax image frame,
The image display device according to claim 1, wherein each frame is displayed on the display panel as one parallax image frame when the temperature corresponding to the temperature information is lower than a first temperature. The controller is
When the temperature corresponding to the temperature information is the second temperature or higher, at least one of the display panel and the barrier panel is controlled based on the position of the user's eyes,
4. When the temperature corresponding to the temperature information is lower than the second temperature, the display panel and the barrier panel are controlled without being based on the position of the eyes of the user. The image display device according to. Further comprising a light source located closer to the barrier panel than the display panel,
The controller is
The image display device according to claim 4, wherein when the temperature corresponding to the temperature information is equal to or higher than a second temperature, the barrier panel is controlled based on the position of the eyes of the user. Further comprising a light source located closer to the display panel than the barrier panel,
The controller is
The image display device according to claim 4, wherein when the temperature corresponding to the temperature information is equal to or higher than a second temperature, the display panel is controlled based on the position of the eye of the user. A display panel that displays a frame including a right-eye image viewed by the right eye of the user and a left-eye image viewed by the left eye of the user,
A barrier panel that is positioned to overlap the display panel, and that forms a light-transmitting portion and a light-shielding portion so that the image light of each of the right-eye image and the left-eye image reaches the right and left eyes of the user. When,
An image display device including a controller that controls the display panel and the barrier panel,
Including a reflective member,
The controller acquires temperature information, controls the display panel and the barrier panel based on the temperature information,
The reflection member is an image display system that reflects the image light and makes it reach the left and right eyes of the user. A display panel that displays a frame including a right-eye image viewed by the right eye of the user and a left-eye image viewed by the left eye of the user,
A barrier panel that is positioned to overlap with the display panel, and that forms a light-transmitting portion and a light-shielding portion so that the image light of each of the right-eye image and the left-eye image reaches the right and left eyes of the user. When,
An image display device including a controller that controls the display panel and the barrier panel,
Including a reflective member,
The controller acquires temperature information, controls the display panel and the barrier panel based on the temperature information,
The said reflection member is a moving body carrying the image display system which reflects the said image light and makes it reach | attain the said user's left eye and right eye.

Images