TW201617688A - Three-dimensional image display apparatus - Google Patents

Abstract

A three-dimensional (3D) display apparatus includes a display panel and a 3D image optical structure. The display pane comprises a plurality of pixels arranged in an array and the pixels comprise adjacent a first region and a second region. The 3D image optical structure is disposed on one side of the display panel and includes a plurality of first optical units which are disposed along a first direction on one side of the display panel. Each of the first optical units comprise at least one first portion and at least one second portion. The first portions correspond to the first region, the second portions correspond to the second region, the first portion comprises a first curvature radius and a plurality of corresponding first circle centers, the second portion comprises a second curvature radius and a plurality of corresponding second circle centers, the first curvature radius is different from the second curvature radius, and the first circle centers are not overlapped with the second circle centers in the vertical projection direction.

Description

Three-dimensional image display device

The present invention relates to a display device, and more particularly to a three-dimensional image display device.

In general, a three-dimensional image display apparatus can be divided into a glasses-type three-dimensional image display device and a naked-eye three-dimensional image display device. Among them, the use of glasses-type three-dimensional image display technology, the user must wear specially designed glasses, such as shutter glasses, and let the user's left and right eyes receive different images, and then perceive the stereo image. The naked-eye three-dimensional image display device is provided with a special optical component, such as a parallax barrier, inside the display device, so that the display device can provide different images to the left and right eyes of the user respectively, thereby allowing use. The stereo image can be perceived without wearing auxiliary glasses.

FIG. 1 is a schematic diagram of a conventional naked-eye three-dimensional image display device 1. The naked eye type three-dimensional image display device 1 includes a display panel 11 and a parallax control element 12. The display panel 11 includes two substrates 111, 112, and a liquid crystal layer 113 disposed therebetween. In addition, the substrate 111 includes a pixel array composed of a plurality of pixels (not shown), and each pixel may correspond to at least one specific liquid crystal cell (eg, 113a, 113b) in the liquid crystal layer 113. The parallax control element 12 includes two substrates 121, 122, liquid crystal cells 123, 124, two sets of strip electrodes 125, 126, and surface electrodes 127 disposed opposite each other. The liquid crystal cells 123 and 124 are disposed between the substrates 121 and 122. The strip electrodes 125, 126 are alternately disposed on the surface of the substrate 121, and the surface electrode 127 is formed on one surface of the substrate 122.

When the surface electrode 127 and the strip electrode 125 are grounded, and the strip electrode 126 is connected to a high voltage, the liquid crystal cell 123 located at the strip electrode 125 is not driven; and the liquid crystal cell 124 at the strip electrode group 126 will Will be driven. As a result, when the light emitted by the display panel 11 passes through the parallax control element 12, the light cannot penetrate the driven liquid crystal cell 124, only It can pass through the undriven liquid crystal cell 123. Therefore, the image emitted by the display panel 11 forms an image including the parallax barrier pattern, and can provide a left eye image (for example, an image from a pixel corresponding to the liquid crystal cell 113b) and a right eye image (for example, from the corresponding image). The image of the pixel of the liquid crystal cell 113a is given to the left and right eyes of the user, and the user's brain can sense a stereoscopic image after receiving the signals of the left and right eye images.

Many display devices are currently rotatable relative to a pedestal or electronic device. For example, when the display device is placed horizontally (ie, the long side of the display device is in the horizontal direction), it is called a landscape mode; When the device is placed straight (ie, the long side of the display device is in the vertical direction), it is called a portrait mode.

However, the parallax control element 12 of the conventional three-dimensional image display device 1 uses a liquid crystal to form a light-shielding structure. Therefore, even if the aperture ratio of the parallax control element has been optimized, the phenomenon of moiré and color shift of optical interference is reduced, however, when operating in the portrait mode, it is located at the edge of the electrode. The liquid crystal may have problems such as incomplete steering or uneven distribution, so the color shift phenomenon and the moiré phenomenon of optical interference may be caused by the different viewing angles of the user, and the overall effect is affected. display effect.

Therefore, how to provide a three-dimensional image display device, which can reduce the phenomenon of optical interference, and at the same time can avoid the occurrence of color shift, thereby improving the display effect, has become one of the important topics.

In view of the above problems, an object of the present invention is to provide a three-dimensional image display device capable of reducing the phenomenon of creping of optical interference while avoiding the occurrence of color shift and thereby improving the display effect.

To achieve the above object, a three-dimensional image display device according to the present invention includes a display panel and a three-dimensional image optical structure. The display panel includes a plurality of pixels arranged in an array and the pixels include an adjacent first region and a second region. The three-dimensional optical structure is disposed on one side of the display panel, and the three-dimensional optical structure includes a plurality of first optical units, the first optical units are disposed along a first direction, and each of the first optical units includes at least one first portion and at least one the second part. The first portion of each of the first optical units corresponds to the first region The second portion of each of the first optical units corresponds to the second region. The first portion includes a first radius of curvature and a corresponding plurality of first centers, and the second portion includes a second radius of curvature and a corresponding plurality of second centers. The first radius of curvature is different from the second radius of curvature, and the first centers do not overlap the second centers in the vertical projection direction.

To achieve the above object, a three-dimensional image display device according to the present invention includes a display panel and a three-dimensional image optical structure. The display panel includes a plurality of pixels arranged in an array and the pixels include an adjacent first region and a second region. The three-dimensional image optical structure is disposed on one side of the display panel, and the three-dimensional image optical structure includes a plurality of first optical units. The first optical units are disposed along a first direction, and each optical component includes at least a first portion and at least a second portion. The first portion of each of the first optical units corresponds to the first region, and the second portion of each of the first optical units corresponds to the second region, the first portion being asymmetric with respect to one of the axes orthogonal to the display panel, and the second Part is asymmetrical with respect to the axis.

According to the present invention, in a three-dimensional image display device according to the present invention, the first portion includes a first radius of curvature, the second portion includes a second radius of curvature, and the first radius of curvature is different from the second radius of curvature, or The first portion is asymmetrical with respect to one of the axes orthogonal to the display panel, and the second portion is asymmetrical with respect to the axis. Thereby, the phenomenon of moiré which can reduce optical interference can be realized, and at the same time, the generation of color shift can be avoided to improve the display effect.

1, 2, 3, 5, 6, 7, 8‧‧‧3D image display device

11, 21‧‧‧ display panel

111, 112, 121, 122, 211, 212‧‧‧ substrates

113, 315, 615, 815‧‧ ‧ liquid crystal layer

113a, 113b, 123, 124‧‧‧ liquid crystal cell

12‧‧‧ Parallax control elements

125, 126, E1~E12‧‧‧ strip electrodes

127‧‧‧ surface electrode

22, 31, 51, 61, 71, 81, 91‧‧‧3D optical structure

221, 312, 4A, 4B, 4C, 511, 612, 711‧‧‧ first optical unit

2211, 3121, 41, 43, 45, 5111, 6121, 7111‧‧‧ first part

2212, 3122, 42, 44, 46, 5112, 6122, 7112‧‧‧ Part II

311, 611, 811‧‧‧ first substrate

313, 613, 712‧‧‧ second optical unit

314, 614, 814‧‧‧ second substrate

812, 912‧‧‧ first electrode set

8121a‧‧‧first axis

8121b‧‧‧second axis

813, 913‧‧‧ second electrode set

9121‧‧‧First strip electrode

9122‧‧‧First strip electrode

A1‧‧‧ first interval

A2‧‧‧second interval

A3‧‧‧ third interval

B, G, R‧‧‧ sub-pixels

C1‧‧‧First Center

C2‧‧‧ second center

D1‧‧‧ first direction

D2‧‧‧ second direction

E‧‧‧Optical components

P‧‧‧ pixels

R1‧‧‧ first area

R2‧‧‧ second area

Ra, fc‧‧‧ first radius of curvature

Rb, fd‧‧‧ second radius of curvature

Ra', Rb', Rc', Rd'‧‧ lens

X1, X2, X3‧‧‧ central axis

FIG. 1 is a schematic diagram of a conventional naked-eye three-dimensional image display device.

2A to 2C are schematic views of a three-dimensional image display device according to a preferred embodiment of the present invention.

3A-3C are schematic diagrams showing another 3D image display device in accordance with a preferred embodiment of the present invention.

4A-4C are schematic diagrams showing various variations of a first optical unit in accordance with a preferred embodiment of the present invention.

5A and 5B are schematic diagrams showing another 3D image display device in accordance with a preferred embodiment of the present invention.

6A and 6B are schematic diagrams showing another 3D image display device in accordance with a preferred embodiment of the present invention.

FIG. 7 is a schematic diagram of another three-dimensional image display device in accordance with a preferred embodiment of the present invention.

FIG. 8A is a schematic diagram of another three-dimensional image display device according to a preferred embodiment of the present invention.

FIG. 8B is a schematic cross-sectional view taken along line AA of FIG. 8A. FIG.

8C is a cross-sectional view of another aspect of FIG. 8A taken along line AA.

8D is an optical schematic view of a lens of the three-dimensional image device of FIG. 8C.

Figure 8E is a cross-sectional view of another aspect of Figure 8A taken along line BB.

9A is a schematic diagram of another three-dimensional image display device in accordance with a preferred embodiment of the present invention.

9B is a schematic cross-sectional view of the secant line of FIG. 9A along the CC.

9C is a schematic cross-sectional view of the DD cut line of FIG. 9A.

9D is an optical schematic view of a lens of the three-dimensional image device of FIG. 9A.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a three-dimensional image display device according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings, wherein the same elements will be described with the same reference numerals.

First, please refer to FIG. 2A to FIG. 2C, which is a three-dimensional image display device 2 according to a preferred embodiment of the present invention. The three-dimensional image display device 2 includes a display panel 21 and a three-dimensional image optical structure 22. In practice, the display panel 21 is any display panel that can display a two-dimensional image, such as a liquid crystal display panel, an electroluminescent display panel, or an electrophoretic display panel.

In the embodiment, the display panel 21 is a liquid crystal display panel. The display panel 21 includes two substrates 211 and 212 and a plurality of pixels P disposed opposite to each other. The pixels P are disposed between the substrates 211 and 212 and arranged in an array. Each pixel P includes three sub-pixels R, G, and B, and the pixels P are sequentially provided with a left eye image and a right eye image according to the arrangement position. Of course, the number of sub-pixels contained in each pixel P may also be two, four or four. The display panel 21 outputs image data and serves as a mechanism for providing image data.

The display panel 21 may further include a polarizer (not shown), and the polarizer may be disposed on one surface of the substrate 211 and/or on one surface of the substrate 212. Furthermore, the display panel 21 can also be provided with a color filter (not shown) such that the display panel 21 presents a color two-dimensional image. In addition, in operation, a light source such as a backlight module (not shown) on the light incident surface of the display panel 21 is required. The materials and arrangements of the polarizers, color filters, and/or backlight modules described herein are well known to those of ordinary skill in the art to which the present invention pertains. I will not repeat them here.

The three-dimensional image optical structure 22 is disposed on one side of the display panel 21, and the three-dimensional image optical structure 22 includes a plurality of first optical units 221 disposed adjacent to each other. The first optical units 221 are disposed on the display panel 21 along a first direction D1. Each of the first optical units 221 includes a first portion 2211 and a second portion 2212. The first portion 2211 is a first region R1 corresponding to one of the pixels P, and the second portion 2212 is a second region R2 corresponding to one of the pixels P. The second portion 2212 is adjacent to the first portion 2211 and disposed along the first direction D1. In detail, the regions of the pixels P that are covered by the first portion 2211 of the first optical unit 221 in the vertical projection direction are defined as the first region R1, and the first optical units are identical. The regions of the pixels 22 that are covered by the second portion 2212 in the vertical projection direction are defined as the second region R2. In this embodiment, the widths of the first region R1 and the second region R2 are respectively equal to the width of the two pixels P, and the area of the first region R1 is equal to the area of the second region R2. In addition, it is worth mentioning that the first optical unit 221 is disposed on the display panel in a slant manner, that is, one of the long sides of each of the first optical units 221 and one of the first regions R1. Between the inclusion of a non-zero angle, preferably the angle is arctan (1/3) or arctan (1/6).

In this embodiment, each of the first optical units 221 is an optical lens, such as a lenticular lens, and the first portion 2211 and the second portion 2212 are different from one side opposite to the display panel 21. The convex part of the radius of curvature. The first radius of curvature Ra of the first portion 2211 is greater than the second radius of curvature Rb of the second portion 2212. The first radius of curvature Ra corresponds to the plurality of first centers C1, and the second radius of curvature Rb corresponds to the plurality of second centers C2, and the first center C1 and the second center C2 do not overlap in the vertical projection direction. Therefore, when the first center C1 and the second center C2 are perpendicularly projected on the same plane, the straight line formed by the first center C1 and the straight line formed by the second center C2 are parallel. Since the second portion 2212 includes a smaller radius of curvature than the first portion 2211, the light will be directed to the pixel P in a defocused manner relative to the first portion 2211. In other words, the first region R1 and the second region R2 will contain different light transmittances, and the second region R2 relative to the second portion 2212 will contain a smaller effective aperture ratio, as opposed to The first region R1 of the first portion 2211 will contain a larger effective aperture ratio, and the aperture ratio of the adjacent two regions R1, R2 is transmitted. Complementary, will reduce the phenomenon of moiré while avoiding the occurrence of color shift.

Next, please refer to FIG. 3A to FIG. 3C, which are another three-dimensional image display device 3 according to a preferred embodiment of the present invention. The difference between the three-dimensional image display device 3 and the three-dimensional image display device 2 is that the three-dimensional image optical structure 31 of the three-dimensional image display device 3 has a structural composition different from that of the three-dimensional image display device 2.

The three-dimensional optical structure 31 includes a first substrate 311, a plurality of first optical units 312, a plurality of second optical units 313, a second substrate 314, and a liquid crystal layer 315. The first optical unit 312 is disposed on one side of the first substrate 311 along the first direction D1, and each of the first optical units 312 is electrically connected to each other. The second optical unit 313 is disposed on the same side of the first substrate 311 as the first optical unit 312 in the first direction D1, and each of the second optical units 313 is electrically connected to each other. The second substrate 314 is disposed opposite to the first substrate 311 , and the liquid crystal layer 315 is disposed between the first substrate 311 and the second substrate 314 .

The first substrate 311 and the second substrate 314 are transparent substrates, for example, glass substrates. The first optical unit 312 and the second optical unit 313 are respectively a transparent electrode, and the material thereof comprises indium tin oxide (ITO), indium zinc oxide (IZO), and fluorine doped tin oxide (fluorine doped). Tin oxide, FTO), aluminum zinc oxide (AZO), gallium zinc oxide (GZO), zinc oxide (ZnO) or tin oxide (SnO2). In addition, in practical use, the second substrate 314 includes two sets of transparent electrodes (not shown) which are alternately arranged, and the material thereof is the same as the first optical unit 312 and the second optical unit 313, for example.

Each of the first optical units 312 includes a plurality of first portions 3121 and a plurality of second portions 3122, and the first portions 3121 correspond to a first region R1 of the pixels P, and the second portions 3122 are Corresponding to the second region R2 of one of the pixels P. The first region R1 is a region including two pixels P, and the second region R2 is adjacent to the first region R1 and includes two other pixels P. In this embodiment, the length of the first portion 3121 is the length of one pixel P, and the width thereof is the width of one pixel P (ie, the width of three sub-pixels). The length of the second portion 3122 is the length of one pixel P, and the width is the width of the two sub-pixels. In other words, the widths of the first portion 3121 and the second portion 3122 in the first direction D1 are not the same, and the area of the first portion 3121 is different from the area of the second portion 3122.

When the light passes through the first optical unit 312, since the areas of the first portion 3121 and the second portion 3122 are different, the range in which the light is irradiated to the first region R1 and the second region R2 is also different. Therefore, the first region R1 and the second region R2 will contain different light transmittances, and the first region R1 with respect to the first portion 3121 will contain a larger effective aperture ratio, and with respect to the second portion 3122 The second region R2 will contain a smaller effective aperture ratio, and by making the aperture ratios of the adjacent two regions complementary, the phenomenon of moiré can be reduced while avoiding the occurrence of color shift.

Here, a first portion 3121 and a second portion 3122 form an optical element E, and a plurality of interconnected optical elements E constitute a first optical unit 312. As shown in FIG. 3C, the central axis of the first portion 3121 of the same optical element E overlaps with the central axis of the second portion 3122, that is, the first portion 3121 and the second portion 3122 of the same optical element E contain the same central axis ( The symmetry axis), and the plurality of optical elements E are sequentially shifted by a first interval A1 along the first direction D1, and the width of the first interval A1 is, for example, the width of one sub-pixel, that is, two connected The central axis of the optical element E contains a sub-pixel spacing.

In addition, the second optical unit 313 includes a structure opposite to the first optical unit 312. Therefore, when the first optical unit 312 and the second optical unit 313 are combined with the liquid crystal layer 315 as a light shielding structure, if the first optical unit 312 applies a low potential, the second optical unit 313 applies a high potential.

It should be noted that, in this embodiment, the three-dimensional optical structure 31 is disposed on the display panel 21. However, when the application is performed, the arrangement relationship between the two is exchanged, that is, the three-dimensional optical structure 31 is disposed on Between the display panel 21 and the backlight module. In addition, the dimensions of the first portion 3121, the second portion 3122, the first region R1, and the second region R2 are clearly described for the purpose of the present invention, and are not intended to limit the present invention. Product requirements or design considerations, but with different specifications or sizes.

In practice, the first optical unit and the second optical unit of the three-dimensional image optical structure can include a variety of different embodiments. Since in the same embodiment, the second optical unit has a similar structure to the first optical unit, the only difference is that the first and second portions of the second optical unit are arranged in the opposite order to the first optical unit. Therefore, only the first optical unit will be described below. 4A to 4C, which are preferred embodiments of the present invention. A schematic representation of various variations of the first optical unit of the example.

As shown in FIG. 4A, the first optical unit 4A differs from the first optical unit 312 described above in that the width of the first portion 41 of the first optical unit 4A is the width of 2.5 sub-pixels, and the second portion 42. The width is the width of 1.5 sub-pixels. In the present embodiment, a first portion 41 and a second portion 42 will constitute an optical element E. Wherein, the first portion 41 and the second portion 42 of the same optical element E comprise the same central axis, and each optical element E is sequentially offset along the first direction D1, and the offset is, for example, a sub- The width of the pixel.

As shown in FIG. 4B, the first optical unit 4B includes a plurality of first portions 43 and a plurality of second portions 44, and the first portions 43 are corresponding to the first region R1 of the pixels P, and the The second portion 44 is a second region R2 corresponding to one of the pixels P. The first region R1 described herein is an upper half region including two pixels P, and the second region R2 is a lower half region of the aforementioned two pixels P. In the present embodiment, the length of the first portion 43 is the length of 0.5 pixels P, and the width thereof is the width of the three sub-pixels. The second portion 44 has a length of 0.5 pixels P and a width of two sub-pixels.

Furthermore, a first portion 43 and a second portion 44 form an optical element E. Wherein, the first portion 43 and the second portion 44 of the same optical element E comprise the same central axis, and each optical element E is sequentially disposed along the first direction D1 with a width offset of one sub-pixel, and the same Each of the optical elements E in the first optical unit 4B is sequentially connected in an upright and inverted order, and each optical element E in the adjacent two first optical units 4B is arranged in a reverse direction.

Next, referring to FIG. 4C, the first optical unit 4C is compared with the first optical unit 4B, and the difference between the two is that the width of the first portion 45 of the first optical unit 4C is the width of 2.5 sub-pixels, and The width of the second portion 46 is the width of 1.5 sub-pixels. Therefore, in implementation, the widths of the first portion and the second portion may be such that the width is an integer multiple of the sub-pixels or a non-integer multiple of the sub-pixels, depending on actual needs.

Please refer to FIG. 5A and FIG. 5B for explaining another three-dimensional image display device 5 according to a preferred embodiment of the present invention. The three-dimensional image display device 5 includes a display panel 21 and a three-dimensional image optical structure 51. The three-dimensional image optical structure 51 is disposed on one side of the display panel 21, and the three-dimensional image optical structure 51 includes a plurality of first optical units 511, and the first optical units 511 is disposed on the display panel 21 along a first direction D1. Each of the first optical units 511 includes a plurality of optical elements E, and each of the optical elements E includes an adjacent first portion 5111 and a second portion 5112.

The first portion 5111 corresponds to the first region R1 of one of the pixels P, and the second portion 5112 corresponds to the second region R2 of one of the pixels P. The regions of the first portion 5111 of the first optical unit 511 that are covered by the vertical projection direction are defined as a first region R1, and the first portions of the first optical units 511 The region of the pixels P that the two portions 5112 cover in the vertical projection direction is defined as the second region R2. In this embodiment, the lengths of the first region R1 and the second region R2 are respectively the length of one pixel P, and the width is the width of two pixels P (ie, the width of six sub-pixels).

In addition, one central axis of the optical element E of each of the first optical units 511 is disposed adjacent to each other, and is sequentially shifted to the first direction A1 by a first interval A1. One of the central axes of the first portion 5111 is offset from the central axis of the optical element E by a second interval A2 in the first direction D1. A central axis of the second portion 5112 is offset from the central axis of the optical element E by a third interval A3 in a second direction D2. The width of the first interval A1 is equal to the width of one sub-pixel, and the widths of the second interval A2 and the third interval A3 are respectively equal to the width of 0.25 pixels. The first direction D1 and the second direction D2 are opposite directions. In this embodiment, the first portion 5111 and the second portion 5112 of each optical element E of the first optical unit 511 are respectively an optical lens, and a plurality of offset directions are included on one side opposite to the display panel 21. Not the same convex.

As described above, the second portion 5112 of each of the optical elements E of the three-dimensional image optical structure 51 includes a second direction offset with respect to the first portion 5111, thereby causing the corresponding second region R2 and the first region. R1 forms an offset of the aperture position, so that the moiré of the optical interference is compensated for by mutual compensation to reduce the occurrence of the pattern and to avoid the occurrence of color shift. Therefore, the three-dimensional image optical structure 51 is a device for shifting the position of the opening.

Next, please refer to FIG. 6A and FIG. 6B, which are still another three-dimensional image display device 6 according to a preferred embodiment of the present invention. The difference between the three-dimensional image display device 6 and the three-dimensional image display device 5 is that the three-dimensional image optical structure 61 of the three-dimensional image display device 6 has a structural composition different from that of the three-dimensional image display device 5. The three-dimensional image optical structure 61 includes a first substrate 611, a plurality of first optical units 612, a plurality of second optical units 613, and a second base. Plate 614 and liquid crystal layer 615.

The first optical unit 612 is disposed on one side of the first substrate 611 along the first direction D1, and each of the first optical units 612 is electrically connected to each other. The second optical unit 613 is disposed on the same side of the first substrate 611 as the first optical unit 612 in the first direction D1, and each of the second optical units 613 is electrically connected to each other. The second substrate 614 is disposed opposite to the first substrate 611. The liquid crystal layer 615 is disposed between the first substrate 611 and the second substrate 614.

The first substrate 611 and the second substrate 614 are transparent substrates, for example, glass substrates. The first optical unit 612 and the second optical unit 613 are respectively a transparent electrode, and the material thereof comprises indium tin oxide, indium zinc oxide, fluorine-doped tin oxide, zinc aluminum oxide, zinc gallium oxide, zinc oxide or tin oxide. In addition, in practical use, the second substrate 614 includes two sets of transparent electrodes (not shown) which are alternately arranged, and the material thereof is the same as the first optical unit 612 and the second optical unit 613, for example.

Each of the first optical units 612 includes a plurality of optical elements E, and each of the optical elements E includes a first portion 6121 and a second portion 6122. The first portion 6121 corresponds to the first region R1 of one of the pixels P, and the second portion 6122 corresponds to the second region R2 of one of the pixels P. The first region R1 is a region including two pixels P, and the second region R2 is adjacent to the first region R1 and also includes two pixels P. In this embodiment, the first portion 6121 and the second portion 6122 are included in the same size, and the length thereof is the length of one pixel P, and the width thereof is the width of 2.5 sub-pixels. In other words, the area of the first portion 6121 is equal to the area of the second portion 6122, and the widths of the first portion 6121 and the second portion 6122 in the first direction D1 are the same.

The central axis X1 of each of the optical elements E of each of the first optical units 612 is sequentially shifted by a first interval A1 in the first direction D1, and the width of the first interval A1 is the width of one sub-pixel. One of the central axes X2 of the first portion 6121 is offset from the central axis X1 of the optical element E by a second interval A2 in the first direction D1. A central axis X3 of the second portion 6122 is offset from the central axis X1 of the optical element E by a third interval A3 in a second direction D2. The second interval A2 and the third interval A3 are respectively equal to the width of 0.25 sub-pixels. The first direction D1 and the second direction D2 are opposite directions. Since the second portion 6122 of each optical element E includes a second direction offset with respect to the first portion 6121, the moiré of the optical interference can be compensated for by mutual compensation to reduce the occurrence of the moiré and to avoid the occurrence of color shift.

In addition, the second optical unit 613 includes a structure opposite to the first optical unit 612. Therefore, it will not be described here. In addition, the foregoing first portion 6121, the second portion 6122, the first region R1, and the second region R2 are sized for illustrative purposes, and are not intended to limit the present invention, and may be used according to the needs of the product or Design considerations, but with different specifications or sizes.

Next, please refer to FIG. 7, which is a three-dimensional image display device 7 according to a preferred embodiment of the present invention. The three-dimensional image display device 7 is different from the three-dimensional image display device 6 in that the first optical unit 711 and the second optical unit 712 of the three-dimensional image optical structure 71 of the three-dimensional image display device 7 are disposed with the first optical device. Unit 612 is different from second optical unit 613. Since the composition of the second optical unit 712 is opposite to that of the first optical unit 711, only the first optical unit 711 will be described below.

In this embodiment, the first region R1 corresponding to the first portion 7111 of each optical element E of the first optical unit 711 is the upper half region of the two pixels, and the second region R2 corresponding to the second portion 7112. It is the lower half of the same two pixels. The length of the first portion 7111 is the length of 0.5 pixels P, and its width is the width of 2.5 sub-pixels. The second portion 7112 has a length of 0.5 pixels P and a width of 2.5 sub-pixels. Further, the arrangement order of the optical elements E of the two first optical units 711 disposed adjacently is reversed.

In addition to the optical lens (solid lens) as described above, a plurality of embodiments will be disclosed below by adjusting the voltage applied to each electrode such that the alignment of the liquid crystal molecules of the liquid crystal layer in the optical structure is rotated to achieve Similar optical effects of the previous embodiments.

The advantages of this configuration are at least: it provides an elasticity that can be used to modulate different optical effects depending on the product. Moreover, since the fabrication of the solid optical lens is difficult and costly, the embodiment does not need to be matched with the solid optical lens, so that the three-dimensional image device can be made thinner and the overall weight is reduced, and the solid optical lens can be used without The preparation process is less and the cost is reduced.

In addition, the additional advantages of such an embodiment include that after the 3D image display device is assembled, different visual effects can be adjusted according to different models, user habits, eye movement detecting device detection results, or different timings. More flexible in application.

In the past, please refer to FIG. 8A to 8E together, and FIG. 8A is a better embodiment according to the present invention. A schematic diagram of another three-dimensional image display device of the embodiment. 8B and 8C are schematic cross-sectional views of different aspects of Fig. 8A taken along line AA. 8D is an optical schematic view of a lens of the three-dimensional image device of FIG. 8C. Figure 8E is a cross-sectional view of another aspect of Figure 8A taken along line BB.

Referring to FIG. 8A , the three-dimensional image optical structure 81 of the present embodiment includes a first substrate 811 and a plurality of first electrode groups 812 . The three-dimensional image optical structure 81 of the present embodiment further includes a plurality of second electrode groups 813, a second substrate 814, and a liquid crystal layer 815. The second substrate 814 is disposed opposite to the first substrate 811 , and the liquid crystal layer 815 is disposed between the first substrate 811 and the second substrate 814 . The first electrode set 812 and the second electrode set 813 include a plurality of transparent strip electrodes or other types of electrodes.

Similar to the foregoing embodiment, the transparent substrate may be, for example, a glass substrate, and the material of the transparent electrode may include indium tin oxide (ITO), indium zinc oxide (IZO), fluorine-doped tin oxide. (fluorine doped tin oxide, FTO), aluminum zinc oxide (AZO), gallium zinc oxide (GZO), zinc oxide (ZnO) or tin oxide (SnO2), etc., but not Materials are limited.

Referring to FIG. 8A in particular, the first electrode group 812 is disposed on a side of the first substrate 811 facing the liquid crystal layer 815. In contrast, the second electrode group 813 is disposed on a side of the second substrate 814 facing the liquid crystal layer 815, and the second electrode group 813 is alternately disposed with the first electrode group 812.

In addition, it is worth mentioning that each of the electrodes in the second electrode group 813 is disposed on the display panel 21 in a slant manner, that is, each electrode in each of the first electrode groups 812 and the first Each of the electrodes in the two electrode group 813 includes a non-zero angle, preferably an angle of arctan (1/3) or arctan (1/6).

Next, referring to FIG. 8A and FIG. 8B together, in one aspect of the embodiment, the voltage difference between the first electrode group 812 and the second electrode group 813 can be adjusted to cause liquid crystal generation of the liquid crystal layer 815. Rotate to create an effect similar to a solid optical lens. In other words, by applying a specific voltage to the first electrode group 812 and the second electrode group 813, the liquid crystal layer 815 can be formed into a virtual lens structure, which is the optical unit as described in the above embodiment.

In this embodiment, when the display device is operated in a landscape mode, the voltages of the respective electrodes in the first electrode group 812 can be fixed to 0 volts, and the strips in the second electrode group 813 can be The voltage adjustment of the electrodes E1~E12 is as follows:

When the voltages of the strip electrodes E1 to E12 of the second electrode group 813 are adjusted as shown in Table 1, the liquid crystal layer 815 will form a lens structure (optical unit) as shown in FIG. 8B, and the optical unit has a lens-like type Ra' and a class. Lens Rb'. The lens-like lens Ra' is a first region R1 corresponding to the pixels P of the display panel 21, and the lens-like lens Rb' is a second region R2 corresponding to the pixels P.

In another embodiment, the voltage of each electrode in the first electrode group 812 is still fixed to 0 volts, and the second voltage applied to each of the strip electrodes E1 to E12 in the second electrode group 813 can be adjusted as follows:

When the voltages as shown in Table 2 are applied to the respective strip electrodes E1 to E12 in the second electrode 813, the lens-like lenses Ra' and the lens-like lenses Rb' of the lens structure formed in the liquid crystal layer 815 are as shown in Fig. 8C. It should be noted that, in this embodiment, the lens L' is asymmetric with respect to one of the second axes 8121b orthogonal to the display panel 21, and the lens Lb' is first with respect to the display panel 21 The axis 8121a is asymmetrical. In other words, the arrangement relationship between the lens-like lens Ra' and the lens-like lens Rb' is similar to connecting the two truncated lenses. In this way, the light passing through the lens structure (optical unit) can be slightly shifted to the center of the three-dimensional image optical structure 81 (so that the image will be concentrated) to reduce the phenomenon of moiré and to improve the color generated by the user's viewing angle. Partial situation.

In addition, when the display device is operated in a portrait mode, the voltage applied to each strip electrode in the second electrode group 813 can be fixed to 0, and the first electrode is used. When the strip electrodes of the group 812 are applied with the voltage as shown in Table 1, a lens structure as shown in Fig. 8E is formed in the liquid crystal layer 815.

In short, by adjusting the voltage difference between the first electrode group 812 and the second electrode group 813, the liquid crystal deflection directions of the liquid crystal layers 815 of different regions can be made different to achieve a lens-like optical effect.

In particular, the lens-like lens Ra' and the lens-like lens Rb' in the drawing are appearances of a virtual optical lens, and are merely for understanding the technical contents of the present invention, and are not actual members.

Next, please refer to FIG. 9A is a schematic diagram of another three-dimensional image display device according to a preferred embodiment of the present invention. 9B is a schematic cross-sectional view of the secant line of FIG. 9A along the CC. 9C is a schematic cross-sectional view of the DD cut line of FIG. 9A. 9D is an optical schematic view of a lens of the three-dimensional image device of FIG. 9A.

Similarly, the three-dimensional optical structure 91 of the present embodiment can also adjust the voltage difference between the first electrode group 912 and the second electrode group 913 to make the liquid crystal deflection directions of the liquid crystal layers in different regions different. Achieve the optical effect of the lens.

In this embodiment, the voltage U1 of the first strip electrode 9121 of the first electrode group 912 can be fixed to 0 volts, and the voltage U2 of the second strip electrode 9122 of the first electrode group 912 can be fixed to 2 volts. The voltages of the strip electrodes E1 to E6 in the second electrode group 913 are adjusted as shown in Table 3. When a voltage such as the above condition is applied to the electrode, the liquid crystal layer corresponding to the first strip electrode 9121 will form a lens structure (optical structure) as shown in FIG. 9B, and the liquid crystal layer corresponding to the second strip electrode 9122 will A lens structure (optical structure) as shown in Fig. 9C is formed. The first radius of curvature fc of the lens Rc' corresponding to the first strip electrode 9121 is different from the second radius of curvature fd of the lens-like Rd' corresponding to the second strip electrode 9122, and the first radius of curvature Fc is shorter than the second radius of curvature fd, and the centroids of the lens-like lens Rc' and the lens-like lens Rd do not overlap in the vertical projection direction (not shown).

Here, the first strip electrode 9121 and the second strip electrode 9122 are alternately arranged, that is, the strip electrodes are alternately applied with the first voltage in the first electrode group 912. And the second voltage. In other implementations, the manner in which the first voltage and the second voltage are applied may be adjusted, for example, the number of alternately disposed first strip electrodes 9121 and second strip electrodes 9122 may be two or three. the above.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

2‧‧‧3D image display device

21‧‧‧ display panel

211, 212‧‧‧ substrate

22‧‧‧3D optical structure

221‧‧‧First optical unit

2211‧‧‧Part 1

2212‧‧‧Part II

D1‧‧‧ first direction

P‧‧‧ pixels

Claims (12)

A three-dimensional image display device includes: a display panel, comprising a plurality of pixels, the pixels are arranged in an array, and the pixels include an adjacent first region and a second region; and a three-dimensional image An optical structure is disposed on one side of the display panel, the three-dimensional image optical structure includes: a plurality of first optical units disposed along a first direction, each of the first optical units including at least a first portion and at least a second portion The first portion of each of the first optical units corresponds to the first region, and the second portion of each of the first optical units corresponds to the second region, the first portion includes a first radius of curvature and a corresponding portion thereof a first first center, the second portion includes a second radius of curvature and a corresponding plurality of second centers, the first radius of curvature and the second radius of curvature are different, and the first center and the second The centers do not overlap in the vertical projection direction. The three-dimensional image display device of claim 1, wherein the first optical units are respectively an optical lens. The three-dimensional image display device of claim 1, wherein the width of the first region and the second region is substantially the width of two pixels. The three-dimensional image display device of claim 1, wherein the first optical units are adjacently disposed. The three-dimensional image display device of claim 1, wherein the second portion is adjacent to the first portion and disposed along the first direction. The three-dimensional image display device of claim 1, wherein the three-dimensional image optical structure further comprises: a first substrate; a second substrate disposed opposite to the first substrate; and a liquid crystal layer disposed on the Between the first substrate and the second substrate; wherein a first electrode group is disposed on a side of the first substrate facing the liquid crystal layer, and a second electrode group is disposed on a side of the second substrate facing the liquid crystal layer When there is a potential difference between the first electrode group and the second electrode group, a complex lens structure is formed on the liquid crystal layer, and the like The effect is the first optical unit. A three-dimensional image display device includes: a display panel, comprising a plurality of pixels, the pixels are arranged in an array, and the pixels include an adjacent first region and a second region; and a three-dimensional image An optical structure is disposed on one side of the display panel, the three-dimensional image optical structure includes: a plurality of first optical units disposed along a first direction, each of the first optical units including at least a first portion and at least a second portion The first portion of each of the first optical units corresponds to the first region, and the second portion of each of the first optical units corresponds to the second region, the first portion being orthogonal to an axis orthogonal to the display panel It is asymmetrical and the second portion is asymmetrical with respect to the axis. The three-dimensional image display device of claim 7, wherein the first optical units are respectively an optical lens. The three-dimensional image display device of claim 7, wherein the width of the first region and the second region is substantially the width of two pixels. The three-dimensional image display device of claim 7, wherein the first optical units are adjacently disposed. The three-dimensional image display device of claim 7, wherein the second portion is adjacent to the first portion and disposed along the first direction. The three-dimensional image display device of claim 7, wherein the three-dimensional image optical structure further comprises: a first substrate; a second substrate disposed opposite to the first substrate; and a liquid crystal layer disposed on the Between the first substrate and the second substrate; wherein a first electrode group is disposed on a side of the first substrate facing the liquid crystal layer, and a second electrode group is disposed on a side of the second substrate facing the liquid crystal layer When there is a potential difference between the first electrode group and the second electrode group, a complex lens structure is formed on the liquid crystal layer, and is equivalent to the first optical units.