TWI684027B - Stereoscopic image display device and stereoscopic image display method - Google Patents

Abstract

A stereoscopic image display device includes a display panel, a lens array, a light controller, a polarizer film, and a magnifying lens. The lens array is disposed on the display panel. The light controller is disposed on the lens array. The polarizer film is disposed on the light controller. The magnifying lens is disposed on the polarizer film. A display method of the stereoscopic image is also provided.

Description

Stereoscopic image display device and stereoscopic image display method

The invention relates to an image display device and a display method, and in particular to a stereoscopic image display device and a stereoscopic image display method.

As the technologies of Virtual Reality, Augmented Reality, and Mixed Reality are maturing, many related electronic products have appeared on the market, such as: head mounted display (Head mounted display) display) etc. In general, head-mounted displays create unique scenes, including objects and environmental images in corresponding combinations, allowing users to immerse themselves in images with depth information through binocular parallax. However, the stereoscopic images generated by parallax will bring the user to adjustment-convergence conflict (A.C. conflict), which may cause visual fatigue symptoms such as blurred vision, dizziness, double vision, and even nausea and vomiting.

In order to solve the problem of conflicting adjustment of visual amplitude, light field display technology has been proposed to produce a reconstructed stereoscopic light field image. The reconstructed stereoscopic light field image can present a natural three-dimensional object and provide depth of field information Focusable image. However, in order to record viewing angle and depth of field information, display devices using light field display technology must sacrifice overall resolution. Therefore, a display device that solves the conflict of visual amplitude adjustment and improves resolution is the focus of research in this field.

A stereoscopic image display device according to an embodiment of the present invention includes a display panel, a lens array, a light controller, a polarizer, and a magnifying lens. The lens array is located on the display panel, the light controller is located on the lens array, the polarizer is located on the light controller, and the magnifying lens is located on the polarizer.

In an embodiment of the invention, the above display panel is suitable for providing a first original image and a second original image. The first original image is converted into a first virtual image on the first virtual plane. The second original image is converted into a second virtual image on the second virtual plane.

A three-dimensional image display method according to an embodiment of the present invention includes the following steps: providing the aforementioned three-dimensional image display device; executing the first mode during the first period; and performing the second mode during the second period. The first mode includes the following steps: providing the first original image through the display panel; and converting the first original image into the first enlarged image through the lens array, the light control device, the polarizer, and the magnifying lens. The second mode includes the following steps: providing a second original image through a display panel; and converting the second original image into a second enlarged image through a lens array, a light controller, a polarizer, and a magnifying lens. The light controller rotates the polarization direction of the second original image by 90 degrees. The first enlarged image and the second enlarged image constitute a mixed image. The resolution of the mixed image is higher than the resolution of the first enlarged image.

In the stereoscopic image display device and the stereoscopic image display method according to an embodiment of the present invention, since the display panel is adapted to execute the first mode during the first time period to transmit the first original image through the lens array, light controller, polarizer and magnifying lens Convert to the first magnified image, and execute the second mode in the second time period to convert the second original image through the lens array, light control device, polarizer and magnifying lens to the second magnified image, so it can be shared by time-multiplexing The first enlarged image and the second enlarged image are overlapped to form a mixed image. Since the first zoomed-in image is a stereoscopic image, which actually has real depth information, it is possible to reduce the user's conflict of visual amplitude adjustment. In addition, the second enlarged image is a high-resolution planar image. In this way, the mixed image composed of the overlapping planar image and the stereoscopic image has a good resolution. Therefore, the resolution of the stereoscopic image and the display quality of the stereoscopic image display device can be improved.

One of the purposes of the present invention is to reduce the user's conflict of visual amplitude adjustment.

One of the purposes of the present invention is to relieve the symptoms of visual fatigue such as blurred vision, dizziness, double vision, nausea and vomiting when the user views the stereoscopic image display device.

One of the objectives of the present invention is to improve the resolution of stereoscopic images.

One of the objectives of the present invention is to increase the field of view (FOV) range of a stereoscopic image display device.

One of the objectives of the present invention is to improve the display quality of a stereoscopic image display device.

One of the purposes of the present invention is to enhance the user's stereoscopic visual experience.

One of the objectives of the present invention is to promote the user experience of using a stereoscopic image display device.

In order to make the above-mentioned features and advantages of the present invention more obvious and understandable, the embodiments are specifically described below in conjunction with the accompanying drawings for detailed description as follows.

FIG. 1 is a schematic diagram of a three-dimensional explosion of a three-dimensional image display device according to an embodiment of the invention. Please refer to FIG. 1. In this embodiment, the stereoscopic image display device 100 includes a display panel 110, a lens array 120, a light controller 130 and a polarizer 140. In this embodiment, the lens array 120 is located on the display panel 110, the light controller 130 is located on the lens array 120, and the polarizer 140 is located on the light controller 130. In addition, according to other embodiments, the stereoscopic image display device 100 further includes a magnifying lens 150, which is located on the polarizer 140 and has a focusing plane F, but the invention is not limited thereto.

In this embodiment, the display panel 110 may be a liquid crystal display panel, an organic light-emitting diode display panel, a miniature light-emitting diode display panel, a sub-millimeter light-emitting diode display panel, a quantum dot light-emitting diode display panel, an electric The plasma display panel, the electrophoretic display panel or other suitable display panels are not limited to this invention. Since the above various display panels are well known to those skilled in the art, they will not be described in detail. In the following embodiments, the display panel 110 takes an organic light-emitting diode display panel as an example.

2A is a schematic cross-sectional view of a lens array of a stereoscopic image display device according to an embodiment of the invention. 1 and 2A, in this embodiment, the lens array 120 includes a first substrate 121, a second substrate 122, a mesh electrode 123, a planar electrode 124, and a first liquid crystal layer 125. In this embodiment, the mesh electrode 123 is located on the first substrate 121, the planar electrode 124 is located on the second substrate 122, and the first liquid crystal layer 125 is located between the mesh electrode 123 and the planar electrode 124. For example, the materials of the first substrate 121 and the second substrate 122 may be glass, quartz, or organic polymer. The material of the first liquid crystal layer 125 is, for example, liquid crystal molecules, electrophoretic display media or other applicable media, but the invention is not limited thereto.

In this embodiment, please refer to FIGS. 1 and 2A at the same time. The mesh electrode 123 is, for example, an electrode layer having a plurality of hexagonal patterns, but the present invention is not limited thereto. Under the design of this embodiment, a plurality of hexagonal patterned electrode layers can produce the densest arrangement to achieve the most effective space utilization and achieve the effect of electric field optimization, thereby improving the light conversion effect of the lens array 120 . Based on the consideration of conductivity, the material of the mesh electrode 123 is generally a metal material, which may include aluminum, silver or copper, but the invention is not limited thereto. In the present embodiment, the sheet electrode 124 is completely disposed on the second substrate 122, but the invention is not limited thereto. The material of the sheet electrode 124 may include a transparent conductive film, such as indium tin oxide, indium zinc oxide (IZO), or indium gallium zinc oxide (IGZO), but the present invention is not limited thereto. In other embodiments, the material of the sheet electrode 124 may also include conductive polymer (PEDOT), nano carbon material, or other suitable materials.

In this embodiment, the lens array 120 further includes a high-resistance layer 127 between the mesh electrode 123 and the first liquid crystal layer 125. For example, the high resistance layer 127 is located on the first substrate 121 and covers the mesh electrode 123. Under the design of this embodiment, the high-resistance layer 127 can smooth the electric field generated by the mesh electrode, so that the electric field at the edge of the mesh electrode 123 is smooth, to further reduce the driving voltage and simplify the driving method. The material of the high resistance layer 127 includes niobium oxide (Nb ₂ O ₅ ) or zinc oxide (ZnO), but the invention is not limited thereto. In this embodiment, the thickness of the high-resistance layer 127 is, for example, 20 nm, but the invention is not limited thereto.

In this embodiment, the lens array 120 may optionally include an alignment film 126 and a sealant 128. The alignment film 126 is located between the high resistance layer 127 and the first liquid crystal layer 125 or between the sheet electrode 124 and the first liquid crystal layer 125. The material of the alignment film 126 includes polyimide or other suitable materials, but the invention is not limited thereto. The sealant 128 is located between the first substrate 121 and the second substrate 122. The material of the frame glue 128 includes epoxy resin or other suitable materials, but the invention is not limited thereto.

2B is a schematic partial cross-sectional view of a light controller of a stereoscopic image display device according to an embodiment of the invention. Please refer to FIGS. 1 and 2B. In this embodiment, the light controller 130 includes a twisted nematic liquid crystal layer 135. For example, the light controller 130 further includes a third substrate 131, a fourth substrate 132, a first electrode 133, and a second electrode 134. The first electrode 133 is located on the third substrate 131, and the second electrode 134 is located on the fourth substrate 132. The twisted nematic liquid crystal layer 135 is located between the first electrode 133 and the second electrode 134. The material of the third substrate 131 and the fourth substrate 132 may be glass, quartz or organic polymer. The material of the first electrode 133 and the second electrode 134 may be the same as the material of the sheet electrode 124. The material of the first electrode 133 and the second electrode 134 is, for example, indium tin oxide, indium zinc oxide, or indium gallium zinc oxide, but the present invention Not limited to this.

FIG. 3A is a schematic diagram of a first embodiment of a three-dimensional image display device according to an embodiment of the present invention. FIG. 3B is a schematic diagram of a stereoscopic image display device according to an embodiment of the present invention performing the second mode. It should be noted here that in FIGS. 3A and 3B, the axes x, y, and z in three directions are perpendicular to each other. In addition, FIGS. 3A and 3B only show the image observed by the user's single eye, for example, the image observed by the user’s right eye. However, the image and the display method of the user's left eye are the same as those of the right eye, so the present invention will not repeat them. On the other hand, an example of a stereoscopic display system includes two of the aforementioned stereoscopic display devices 100 to be suitable for the left and right eyes of the user, respectively.

In the following, a method for displaying a stereoscopic image of the stereoscopic display device 100 will be described with an embodiment. Please refer to FIG. 1, FIG. 3A and FIG. 3B at the same time. The display panel 110 of this embodiment is suitable for providing the first original image 210 and the second original image 220 in a multiplexing manner (shown in FIGS. 3A and 3B). (Figure 3B). The first original image 210 is converted into the first virtual image 212 on the first virtual plane 212P. The second original image 220 is converted into a second virtual image 222 on the second virtual plane 222P. Under the design of this embodiment, the distance t between the focus plane F and the first virtual plane 212P is about 1.64 mm, for example. Please refer to FIG. 1 and FIG. 3A. In this embodiment, the image observed by the user's eye E through the magnifying lens 150 is a stereo generated by executing the first mode M1 during the first period T1 (shown in FIG. 4). image. The step of generating the stereoscopic image in the first mode M1 includes providing the first original image 210 through the display panel 110 of the stereoscopic image display device 100, and converting the first image through the lens array 120, the light controller 130, the polarizer 140, and the magnifying lens 150. The original image 210 is converted into the first enlarged image 232, wherein the first original image 210 is converted into the first virtual image 212 by the lens array 120, the light controller 130, and the polarizer 140.

In detail, first, the display panel 110 displays the first original image 210. The first original image 210 is, for example, a high-resolution elemental image presented by an algorithm. The first original image 210 is an unpolarized image L. In other words, the first original image 210 has multiple polarization states, including images polarized in the x-axis direction and the y-axis direction.

Next, the lens array 120 acts on the first original image 210. The lens array 120 can focus images in a specific polarization direction, while images in other polarization directions are not focused. In this embodiment, the lens array 120 focuses the image polarized in the x-axis direction to form a focused image A, and the image polarized in the y-axis or any non-x-axis direction directly penetrates the lens array to form an unfocused image B, but The invention is not limited to this. In other embodiments, through the lens array 120, the focused image may also be an image polarized in the y-axis direction, and an image polarized in the x-axis or any non-y-axis direction is an unfocused image, according to the actual needs of the user And design.

Furthermore, since the light controller 130 includes the twisted nematic liquid crystal layer 135, when the driving voltage is supplied to the light controller 130, the liquid crystal molecules of the twisted nematic liquid crystal layer 135 will be aligned along the electric field, so that the focused image A and The unfocused image B directly penetrates the light controller 130. When the driving voltage is supplied to the light controller 130, the polarization directions of the focused image A and the unfocused image B will not be changed, but the original polarization directions will be maintained.

Next, the focused image A and the unfocused image B enter the polarizer 140. In this embodiment, the polarizer 140 has a specific polarization direction. For example, the polarizer 140 is a polarizer polarized in the x-axis direction. In other words, the polarizer 140 can transmit the image polarized in the x-axis direction, and block/or absorb the image polarized in the y-axis direction or any image polarized in the non-x-axis direction. In this embodiment, the focused image A is an image polarized in the x-axis direction, and therefore can pass through the polarizer 140, and the non-focused image B is filtered out. In this way, the first virtual image 212 can be formed on the first virtual plane 212P. In this embodiment, the first virtual image 212 is a stereoscopic image (3D image). And under the action of the magnifying lens 150, the first virtual image 212 is further converted into a first magnified image 232, that is, an enlarged stereoscopic image (3D image).

Please continue to refer to FIG. 1 and FIG. 3A. In this embodiment, the first enlarged image 232 observed by the user's eye E is a converted three-dimensional virtual image of the first original image 210, and the resolution of the first enlarged image 232 Different from the resolution of the first original image 210, the first enlarged image 232 is a light-field stereoscopic image with excellent quality, so it can slow down or solve the user's visual fatigue, but the present invention is not limited to this. It should be noted here that FIG. 3A only schematically shows that the first original image 210 is converted into a polarized and focused position in the x-axis direction by the lens array 120, the light controller 130, the polarizer 140, and the magnifying lens 150. The first enlarged image 232 of the first final plane 232P. In fact, the first virtual image 212 is imaged on the first virtual plane 212P and has a distance t from the focal plane F of the magnifying lens 150, and the distance t is about 1.64 mm, but the invention is not limited thereto.

Next, please refer to FIGS. 1 and 3B. In this embodiment, the image observed by the user’s eye E through the magnifying lens 150 is generated by executing the second mode M2 during the second period T2 (shown in FIG. 4) Flat image. The step of generating the planar image in the second mode M2 includes providing the second original image 220 through the display panel 110 of the stereoscopic image display device 100, and converting the second image through the lens array 120, the light controller 130, the polarizer 140, and the magnifying lens 150. The original image 220 is converted into the second enlarged image 242.

First, the display panel 110 displays the second original image 220. The second original image 220 is, for example, a high-resolution image. The second original image 220 is an unpolarized image L. In other words, the second original image 220 has multiple polarization states, including images polarized in the x-axis direction and the y-axis direction.

Next, the lens array 120 acts on the second original image 220. The lens array 120 can focus images in a specific polarization direction, while images in other polarization directions are not focused. In this embodiment, the lens array 120 focuses the image polarized in the x-axis direction to form a focused image A, and the image polarized in the y-axis or any non-x-axis direction directly penetrates the lens array to form an unfocused image B, but The invention is not limited to this. In other embodiments, through the lens array 120, the focused image may also be an image polarized in the y-axis direction, and an image polarized in the x-axis or any non-y-axis direction is an unfocused image, according to the actual needs of the user And design.

Furthermore, since the light controller 130 includes the twisted nematic liquid crystal layer 135, when no driving voltage is provided to the light controller 130, the liquid crystal molecules of the twisted nematic liquid crystal layer 135 are arranged in a spiral shape, so that the focused image A The polarization direction of the and the non-focused image B are gradually twisted, so that the polarized directions of the focused image A and the unfocused image B are both distorted by 90 degrees. In this embodiment, the focused image A polarized in the x-axis direction will become a focused image A polarized in the y-axis direction after acting by the light controller 130, and the unfocused image B polarized in the y-axis direction will become x. Unfocused image B polarized in the axial direction.

Next, the focused image A and the unfocused image B enter the polarizer 140. In this embodiment, the polarizer 140 has a specific polarization direction. For example, the polarizer 140 is a polarizer in the x-axis direction. In other words, the polarizer 140 can transmit the image polarized in the x-axis direction, and block/or absorb the image polarized in the y-axis direction or any image polarized in the non-x-axis direction. In this embodiment, the non-focused image B is an image polarized in the x-axis direction, so it can penetrate the polarizer 140, and the focused image A is filtered out. In this way, a second virtual image 222 can be formed on the second virtual plane 222P. In this embodiment, the second virtual image 222 is a planar image (2D image). The second virtual image 222 for example includes a protagonist with high resolution Image and background image. And under the action of the magnifying lens 150, the second virtual image 222 is further converted into a second magnified image 242, that is, a magnified planar image (2D image).

Please continue to refer to FIG. 1 and FIG. 3B. In this embodiment, the second virtual image 222 observed by the user's eye E is substantially the same as the second original image 220. Therefore, the second virtual image 222 and the second enlarged image 242 are both high-resolution images, but the invention is not limited thereto. It should be noted here that FIG. 3B only schematically shows that the second original image 220 is converted into a polarization direction with an x-axis direction by the lens array 120, the light controller 130, the polarizer 140, and the magnifying lens 150 and is located in The second enlarged image 242 of the second final plane 242P. Please refer to FIG. 1, the corresponding diopter difference Δx between the first final plane 232P and the second final plane 242P is about 0.4 diopters to 0.8 diopters, so that the depth of the first enlarged image 232 observed by the user Approximately the depth of the second magnified image 242 observed, which can reduce the user's conflict of vision adjustment, relieve the symptoms of visual fatigue such as blurred vision, dizziness, double vision, nausea and vomiting, and promote the user Experience using a stereoscopic display device. In this embodiment, the distance d between the first virtual plane 212P and the second virtual plane 222P is about 0.95 mm.

4 is a timing diagram of a stereoscopic image display device according to an embodiment of the invention. Please refer to FIG. 1, FIG. 3A, FIG. 3B and FIG. 4. In this embodiment, the stereoscopic image display device 100 overlaps the first virtual image 212 and the second virtual image 222 in a time-sharing multiplex manner to form a mixed image 250 (shown in Figures 9A and 9B). For example, the display method of the stereoscopic image is to generate the first enlarged image 232 by executing the first mode M1 during the first period T1, and then execute the second mode M2 to generate the second enlarged image 242 during the second period T2, and then The first mode M1 is executed in the third period T3 to generate another first enlarged image 232, and then the second mode M2 is executed in the fourth period T4 to generate another second enlarged image 242, and the second mode is continuously executed in the above manner. A mode M1 and a second mode M2. In this way, through the phenomenon of persistence of vision, the first enlarged image 232 displayed in the first period T1 and the second enlarged image 242 displayed in the second period T2 can be overlapped to form a mixed image 250. Please refer to FIG. 3A, FIG. 3B and the corresponding descriptions above for the operation modes of the first mode M1 and the second mode M2, which will not be repeated here.

In this embodiment, the frame rate of the first original image 210 or the second original image 220 is 60 Hz, 70 Hz, 90 Hz, 120 Hz, 144 Hz or 240 Hz. The time ΔT of the first period T1 or/and the second period T2 is about 4 milliseconds to 17 milliseconds. In an embodiment of the present invention, the first time period T1 or/and the second time period T2 is, for example, 13 milliseconds, but the present invention is not limited thereto.

In short, the stereoscopic image display method according to an embodiment of the present invention can provide the first enlarged image 232 through the display panel 110 during the first time period T1 and provide the second enlarged image 242 during the second time period T2. Since the depth of the first magnified image 232 observed by the user is similar to the depth of the second magnified image 242 observed, it is possible to reduce the conflict of the user's visual amplitude adjustment and relieve the blurred vision and dizzy double vision of the user , Nausea and vomiting and other symptoms of visual fatigue, and promote the user experience of using a stereoscopic display device. In addition, since the resolution of the second enlarged image 242 is higher than the resolution of the first enlarged image 232, when the first enlarged image 232 and the second enlarged image 242 overlap and form a mixed image through time-division multiplexing, the mixed image The resolution of the image is higher than the resolution of the first enlarged image 232. As such, the stereoscopic image display device 100 of this embodiment can improve the resolution of the stereoscopic image and improve the display quality of the stereoscopic image display device 100. In addition, the stereoscopic visual experience of the user can be improved, and the user's experience of using the stereoscopic image display device can be further promoted.

Please refer to FIG. 1 again. In this embodiment, the magnifying lens 150 can convert the first virtual image 212 into the first magnified image 232 on the first final plane 232P, and convert the second virtual image 222 into the second magnified image 242. On the second final plane 242P. The first enlarged image 232 has a high resolution, which can compensate for the loss in resolution of the first virtual image 212. For example, the magnifying lens 150 of the stereoscopic image display device 100 has an effect like a convex lens. The position where the first virtual image 212 and the second virtual image 222 are imaged is located between the magnifying lens 150 and its focus plane F. After the action of the magnifying lens 150, the first magnified image 232 and the second magnified image 242 are in contact with the user's eye E There is a larger distance FD. The magnifying lens 150 can provide the user with a clear and wide field of view, and can also make the imaging positions of the first magnified image 232 and the second magnified image 242 close, further enhancing the user's stereoscopic vision.

For example, in this embodiment, the appropriate eye distance ER between the user's eye E and the magnifying lens 150 is 18 mm. The size of the magnifying lens 150 is about 34 mm. The distance f _M from the magnifying lens 150 to the focus plane F is about 30 mm to 50 mm. The distance from the magnifying lens 150 to the display panel 110 is about 38.32 mm. The distance g between the lens array 120 and the display panel 110 is about 0.8 mm to 1.2 mm. Under the above design, the formed first virtual image 212 can be close to the focusing plane F, and has a depth of field effect close to the human eye. In addition, the first enlarged image 232 may be a light-field stereoscopic image with excellent quality, and the second enlarged image 242 is a high-resolution planar image. Therefore, the display quality of the stereoscopic image display device 100 can be improved. In addition, the user can observe the first enlarged image 232 and the second enlarged image 242 formed by the first virtual image 212 and the second virtual image through the magnifying lens 150 to further enhance the user's stereoscopic perception and promote the user Experience using the stereoscopic image display device 100.

FIG. 5A is a point spread measurement diagram of a lens array according to an embodiment of the invention. FIG. 5B is an interference fringe diagram of a lens array according to an embodiment of the invention. FIG. 5A shows the light spot focused by the lens array 120, so it can be said that the lens of the lens array 120 has a function of focusing at a specific focal length. Referring to FIG. 5B, the phase delay effect of the lens array 120 is measured to see the phase change of the lens surface. In FIG. 5B, the lens surface has concentric annular and evenly distributed light and dark lines, so it can be seen that the lens has a good and symmetric curved surface. As such, the lens array 120 of this embodiment has a good optical effect and can provide a focusing function with excellent quality.

Fig. 6A is a test pattern with a horizontal viewing angle. 6B is a measurement view of a stereoscopic image in a horizontal viewing angle according to an embodiment of the invention. Please refer to FIGS. 6A and 6B. In this embodiment, the stereoscopic image display device 100 displays the horizontal horizontal viewing angle test pattern of FIG. 6A in a stereoscopic image display mode and photographs, to obtain the stereoscopic image of FIG. 6B at a horizontal perspective Measurement chart. For example, in the test pattern of FIG. 6A, the spacing between adjacent lines on the left is, for example, 2°. Similarly, the spacing between adjacent lines on the right is, for example, 2°. The closest distance between the lines on the left and right indicates that the field of view (FOV) is 70°. The farthest distance between the left and right lines means the viewing angle is 86°. When the test pattern of FIG. 6A is displayed as a stereoscopic image, the line located on the leftmost side and the line located on the rightmost side observed through the calculation magnifying lens 150 can obtain the range of the horizontal viewing angle of the stereoscopic image. In this embodiment, the horizontal viewing angle of the stereoscopic image is 73.5° to 82.6°.

Fig. 6C is a test pattern with a vertical viewing angle. FIG. 6D is a measurement view of a stereoscopic image in a vertical viewing angle according to an embodiment of the invention. Please refer to FIG. 6C and FIG. 6D. In this embodiment, the stereoscopic image display device 100 displays the test pattern of the vertical viewing angle of FIG. 6C in a stereoscopic image display mode and photographs to obtain the stereoscopic image of FIG. 6D at the vertical viewing angle Measurement chart. For example, in the test pattern of FIG. 6C, the spacing between adjacent lines on the upper side is, for example, 2°. Similarly, the spacing between adjacent lines on the lower side is, for example, 2°. The closest distance between the upper and lower lines indicates that the field of view (FOV) is 70°. The most distant distance between the upper and lower lines means the viewing angle is 86°. When the test pattern of FIG. 6C is displayed as a stereoscopic image, the uppermost line and the lowermost line observed by the calculation magnifying lens 150 can obtain the range of the vertical viewing angle of the stereoscopic image. In this embodiment, the vertical viewing angle of the stereoscopic image is 73.5° to 82.6°.

In short, the stereoscopic image display device 100 according to an embodiment of the present invention has an excellent effect of a horizontal viewing angle of one eye and a vertical viewing angle of 73.5° to 82.6°. Compared with a human single-eye viewing angle of 100°, the stereoscopic image display device 100 of this embodiment can provide a human-like viewing angle, improve the viewing angle range of the stereoscopic image display device, relieve the symptoms of visual fatigue of the user, and improve the stereoscopic image display device’s The display quality improves the user's stereoscopic visual experience and promotes the user's experience of using the stereoscopic image display device.

7A is a photograph of a second enlarged image according to an embodiment of the invention. 7B is a partially enlarged photograph of the second enlarged image of FIG. 7A. 7A and 7B, in this embodiment, the second enlarged image 242 provided by the stereoscopic image display device 100 is a high-resolution planar image.

8A is a photograph of a first enlarged image according to an embodiment of the invention. 8B is a partially enlarged photograph of the first enlarged image of FIG. 8A. Please refer to FIGS. 8A and 8B. In this embodiment, compared to the second enlarged image 242, the first enlarged image 232 provided by the stereoscopic image display device 100 is a stereoscopic image with a lower resolution.

9A is a photograph of a mixed image according to an embodiment of the invention. 9B is a partially enlarged photograph of the mixed image of FIG. 9A. Please refer to FIGS. 9A and 9B. In this embodiment, the mixed image 250 is formed by overlapping the first enlarged image 232 and the second enlarged image 242 by time-division multiplexing. The resolution of the mixed image 250 is higher than the first Enlarge image 232.

In summary, the stereoscopic image display device and stereoscopic image display method according to an embodiment of the present invention can provide a first enlarged image as a stereoscopic image and a second enlarged image as a planar background image. The first enlarged image and the second enlarged image constitute a mixed image, and the resolution of the mixed image is higher than the resolution of the first enlarged image. In this way, the stereoscopic image display device can improve the resolution of the stereoscopic image and the display quality of the stereoscopic image display device, can also improve the stereoscopic visual experience of the user, and promote the user's experience of using the stereoscopic image display device.

Although the present invention has been disclosed as above with examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be subject to the scope defined in the appended patent application.

100: stereoscopic image display device 110: display panel 120: lens array 121: first substrate 122: second substrate 123: mesh electrode 124: planar electrode 125: first liquid crystal layer 126: alignment layer 127: high resistance layer 128: sealant 130: light controller 131: third substrate 132: fourth substrate 133: first electrode 134: second electrode 135: twisted nematic liquid crystal layer 140: polarizer 150: magnifying lens 210: first original Image 212: First virtual image 212P: First virtual plane 220: Second original image 222: Second virtual image 222P: Second virtual plane 232: First enlarged image 232P: First final plane 242: Second enlarged image 242P : Second final plane 250: Mixed image A: Focused image B: Unfocused image d, FD, f _M , g, t: Distance E: Eye ER: Suitable eye distance F: Focus plane L: Unpolarized image M1: First mode M2: Second mode T1: First period T2: Second period T3: Third period T4: Fourth period x, y, z: Axis Δx: Diopter difference

FIG. 1 is a schematic diagram of a three-dimensional explosion of a three-dimensional image display device according to an embodiment of the invention. 2A is a schematic cross-sectional view of a lens array of a stereoscopic image display device according to an embodiment of the invention. 2B is a schematic partial cross-sectional view of a light controller of a stereoscopic image display device according to an embodiment of the invention. FIG. 3A is a schematic diagram of a first embodiment of a three-dimensional image display device according to an embodiment of the present invention. FIG. 3B is a schematic diagram of a stereoscopic image display device according to an embodiment of the present invention performing the second mode. FIG. 4 is a timing diagram of a three-dimensional image display method according to an embodiment of the invention. FIG. 5A is a point spread measurement diagram of a lens array according to an embodiment of the invention. FIG. 5B is an interference fringe diagram of a lens array according to an embodiment of the invention. Fig. 6A is a test pattern with a horizontal viewing angle. 6B is a measurement view of the horizontal viewing angle of the stereoscopic image according to an embodiment of the invention. Fig. 6C is a test pattern with a vertical viewing angle. FIG. 6D is a measurement view of the vertical viewing angle of a stereoscopic image according to an embodiment of the invention. 7A is a photograph of a second enlarged image according to an embodiment of the invention. 7B is a partially enlarged photograph of the second enlarged image of FIG. 7A. 8A is a photograph of a first enlarged image according to an embodiment of the invention. 8B is a partially enlarged photograph of the first enlarged image of FIG. 8A. 9A is a photograph of a mixed image according to an embodiment of the invention. 9B is a partially enlarged photograph of the mixed image of FIG. 9A.

100: stereoscopic image display device 110: display panel 120: lens array 130: light controller 140: polarizer 150: magnifying lens 212: first virtual image 212P: first virtual plane 222: second virtual image 222P: second virtual Plane 232: first enlarged image 232P: first final plane 242: second enlarged image 242P: second final plane d, FD, f _M , g, t: distance E: eye ER: suitable eye distance F: focus plane x , Y, z: axis Δx: diopter difference

Claims (20)

A stereoscopic image display device includes: a display panel; a lens array on the display panel, wherein the lens array includes: a first substrate; a second substrate; and a mesh electrode on the first substrate; A planar electrode on the second substrate; and a first liquid crystal layer between the mesh electrode and the planar electrode; a light control device on the lens array; a polarizer on the light control And a magnifying lens on the polarizer. The stereoscopic image display device as described in item 1 of the patent application range, wherein the lens array further includes a high resistance layer between the mesh electrode and the first liquid crystal layer, and the material of the high resistance layer includes niobium oxide Or zinc oxide. The stereoscopic image display device as described in item 1 of the patent application range, wherein the mesh electrode has a plurality of hexagonal patterns, and the material of the mesh electrode includes aluminum, silver, or copper. The stereoscopic image display device as described in item 1 of the patent application range, wherein the light control device includes a twisted nematic liquid crystal layer. The stereoscopic image display device according to item 1 of the patent application scope, wherein the display panel is adapted to provide a first original image and a second original image, the first The original image is converted into a first virtual image on a first virtual plane, the second original image is converted into a second virtual image on a second virtual plane, the first virtual plane and the second virtual plane There is a distance between them. A stereoscopic image display method, including: providing a stereoscopic image display device as described in item 1 of the patent application scope; executing a first mode in a first period, including: providing a first original image through the display panel; And converting the first original image into a first enlarged image by the lens array, the light control device, the polarizer, and the magnifying lens; and executing a second mode in a second time period, including: The display panel provides a second original image; and the second original image is converted into a second enlarged image by the lens array, the light controller, the polarizer and the magnifying lens, wherein the light controller The polarization directions of the two original images are rotated by 90 degrees, wherein the first enlarged image and the second enlarged image constitute a mixed image, and the resolution of the mixed image is higher than the resolution of the first enlarged image. The method for displaying a stereoscopic image as described in item 6 of the patent application, wherein the frame rate of the first original image or the second original image is 60 Hz, 70 Hz, 90 Hz, 120 Hz, 144 Hz or 240 Hz. The method for displaying a stereoscopic image as described in item 6 of the patent application, wherein the first time period and/or the second time period is 13 milliseconds. The method for displaying a stereoscopic image as described in item 6 of the patent application range, wherein in the first period, the lens array, the light control device and the polarizer convert the first original image into a first virtual image in A first virtual plane, the magnifying lens converts the first virtual image into the first magnified image on a first final plane; wherein in the second time period, the lens array, the light controller and the polarizer will The second original image is converted into a second virtual image on a second virtual plane, and the magnifying lens converts the second virtual image into the second magnified image on a second final plane; wherein the first final plane and the The corresponding diopter difference between the second final planes is about 0.4 diopters to 0.8 diopters. A stereoscopic image display device includes: a display panel; a lens array on the display panel; a light control device on the lens array; a polarizer on the light control device; and a magnifying lens on the On the polarizer, wherein the display panel is adapted to provide a first original image and a second original image, the first original image is converted into a first virtual image on a first virtual plane, and the second original image is It is converted into a second virtual image on a second virtual plane, and there is a distance between the first virtual plane and the second virtual plane. The stereoscopic image display device as described in item 10 of the patent application range, wherein the light control device includes a twisted nematic liquid crystal layer. A stereoscopic image display device, including: A display panel; a lens array on the display panel to focus an image in the first polarization direction; a light control device on the lens array; a polarizer on the light control device toward the first A polarized light in a polarized direction; and a magnifying lens located on the polarizer. The stereoscopic image display device as described in item 12 of the patent application range, wherein the lens array includes: a first substrate; a second substrate; a mesh electrode on the first substrate; a planar electrode on the first Two substrates; and a first liquid crystal layer, located between the mesh electrode and the planar electrode. The stereoscopic image display device as recited in item 13 of the patent application range, wherein the lens array further includes a high-resistance layer between the mesh electrode and the first liquid crystal layer, and the material of the high-resistance layer includes niobium oxide Or zinc oxide. The stereoscopic image display device as described in item 13 of the patent application range, wherein the mesh electrode has a plurality of hexagonal patterns, and the material of the mesh electrode includes aluminum, silver, or copper. The stereoscopic image display device as described in item 12 of the patent application scope, wherein the display panel is adapted to provide a first original image and a second original image, the first original image is converted into a first virtual image on a The first virtual plane, the first The two original images are converted into a second virtual image on a second virtual plane, and there is a distance between the first virtual plane and the second virtual plane. A stereoscopic image display device includes: a display panel; a lens array on the display panel; a light control device on the lens array; a polarizer on the light control device with a single polarization direction; And a magnifying lens is located on the polarizer. The stereoscopic image display device as described in item 17 of the patent application range, wherein the lens array includes: a first substrate; a second substrate; a mesh electrode on the first substrate; and a planar electrode on the first Two substrates; and a first liquid crystal layer, located between the mesh electrode and the planar electrode. The stereoscopic image display device as described in item 18 of the patent application range, wherein the lens array further includes a high resistance layer between the mesh electrode and the first liquid crystal layer, and the material of the high resistance layer includes niobium oxide Or zinc oxide. The stereoscopic image display device as described in item 18 of the patent application range, wherein the mesh electrode has a plurality of hexagonal patterns, and the material of the mesh electrode includes aluminum, silver, or copper.

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