TWI497115B - Stereoscopic display device - Google Patents

Description

Stereoscopic display device

The present invention relates to a display device, and more particularly to a stereoscopic display device.

At present, there are mainly two methods for displaying a stereoscopic image by a stereoscopic display device. One is that the viewer must wear the specially treated glasses to view the display device so that the left eye and the right eye receive different images, or the left eye and the right eye. The images alternate to produce a stereoscopic image. This method can be used to see stereoscopic images by the viewer wearing additional glasses, which is inconvenient to use.

The other is a naked-eye display device, which is a principle in which the display device uses a grating, so that the viewer can make the stereoscopic image different from the image seen by the left eye and the right eye without wearing any additional device. Used in print, baseball cards or partially naked-eye electronic stereo displays. A conventional stereoscopic display device includes a display panel and a cylindrical lens array. The display panel includes a plurality of pixels, and the lenticular lens array is disposed opposite to the pixels. Each pixel includes one or three sub-pixels, and the pixels are arranged in a fixed period, wherein the light emitted by the pixels passes through the lenticular lens array to form an image range, so that the conventional stereo display device will More than two visible areas are created at a particular distance.

When the viewer's left and right eyes are in two different visible areas, the viewer can view the stereoscopic image. However, since the display panel and the pixel array have relatively close periodic structures, it is easy for the light emitted by the display panel to exhibit uneven light after passing through the lenticular lens array, so that the viewer can easily see when viewing the stereo image. Fixed interval light and dark The road changes, and the so-called Moiré Effect is generated, which seriously affects the development quality of the stereoscopic display device.

The present invention provides a stereoscopic display device to solve the problems of the prior art.

The invention provides a stereoscopic display device comprising a pixel array and a lens array. The pixel array includes a plurality of sub-pixels, and the lens array includes a plurality of lenticular lenses arranged in parallel. Each of the lenticular lenses includes a central axis, each central axis being inclined corresponding to a first direction and each central axis having an oblique angle with the first direction. The lens array is configured to receive and emit light emitted by the sub-pixels, and form P viewpoints at a view end, P ≧ 2 and P is an integer. The sub-pixels forming each viewpoint correspond to the central axis arrangement.

In an embodiment of the invention, each sub-pixel has a length and a width. When the ratio of each length to each width is 3:1, each tilt angle is between 12.53 degrees and 14.04 degrees. .

According to the stereoscopic display device disclosed in the present invention, since the sub-pixels forming each viewpoint are arranged corresponding to the central axis, the arrangement of the sub-pixels disclosed in the present invention in the first direction is irregular, and therefore, the stereoscopic display device The moiré effect can be reduced, and the zigzag shape is reduced around the stereoscopic image, thereby improving the development quality of the stereoscopic display device. In addition, the corresponding arrangement of the pixel array and the lens array can disperse the resolution reduced in the second direction to the first direction, thereby avoiding the problem of lower resolution in a single direction.

60‧‧‧ lenticular lens

62‧‧‧ center axis

70‧‧‧ display unit

102‧‧‧ pixel array

104‧‧‧ lens array

W‧‧‧Width

L‧‧‧ length

F‧‧‧First direction

S‧‧‧second direction

‧‧‧‧Tilt angle

1 is a top plan view of an embodiment of a stereoscopic display device according to the present invention.

Fig. 2 is a partially enlarged schematic view showing the stereoscopic display device according to Fig. 1.

The above described features and advantages of the present invention will be more apparent from the following description.

Please refer to FIG. 1 and FIG. 2, which are schematic top views of an embodiment of a stereoscopic display device according to the present invention and a partial enlarged view of a stereoscopic display device according to FIG. The stereoscopic display device includes a pixel array 102 and a lens array 104. The pixel array 102 includes a plurality of sub-pixels (ie, rectangles in "1st picture" and "2nd picture"). In this embodiment, the pixel array 102 may include three hundred and fifteen sub-pixels, and each column may have thirty-five sub-pixels (ie, thirty-five sub-pixels arranged along the second direction S), each row. There may be nine sub-pixels (i.e., nine sub-pixels arranged in the first direction F), and the first direction F and the second direction S are perpendicular to each other, but the embodiment is not intended to limit the present invention.

The lens array 104 includes a plurality of lenticular lenses 60 arranged in parallel, each of the lenticular lenses 60 including a central axis 62, each central axis 62 being inclined corresponding to the first direction F and each central axis 62 and the first direction F The clip has an inclination angle α. Wherein, the P sub-pixels (ie, the rectangles in "1st image" and "2nd picture") are a display unit 70, and the display unit 70 is arranged in the second direction S, and each of the lenticular lenses 60 is attached to the The two directions S correspond to one display unit 70 (i.e., the width of each of the lenticular lenses 60 in the second direction S is equal to the width W of the P sub-pixels). The lens array 104 is configured to receive and emit light emitted by the sub-pixels, and form P viewpoints at one viewpoint end, P ≧ 2 and P is an integer. In this embodiment, the five sub-pixels are a display unit 70, and the stereoscopic display device can form five viewpoints (ie, P=5), but the embodiment is not intended to limit the present invention.

Among them, the sub-pixels forming each viewpoint are arranged corresponding to the central axis 62. More specifically, please refer to "2nd picture". In this embodiment, the coding of the sub-pixel forming the first viewpoint may be 1, and the coding of the sub-pixel forming the second viewpoint may be 2, forming The coding of the sub-pixel of the third viewpoint may be 3, the coding of the sub-pixel forming the fourth viewpoint may be 4, and the encoding of the sub-pixel forming the fifth viewpoint may be 5, wherein the first viewpoint is formed The sub-pixels (i.e., sub-pixels encoded as 1) are arranged corresponding to the central axis 62, and the sub-pixels (i.e., sub-pixels encoded as 2) forming the second viewpoint are arranged corresponding to the central axis 62 to form The sub-pixels of the third viewpoint (ie, the sub-pixels encoded as 3) are arranged corresponding to the central axis 62, and the sub-pixels forming the fourth viewpoint (ie, the sub-pixels encoded as 4) correspond to the central axis. The sub-pixels (i.e., sub-pixels encoded as 5) forming the fifth viewpoint are arranged corresponding to the central axis 62. In other words, the sub-pixels forming the first viewpoint are mainly arranged in the direction of the central axis 62, and the sub-pixels forming the second viewpoint are mainly arranged in the direction of the central axis 62, and the sub-pixels forming the third viewpoint are mainly Arranged along the direction of the central axis 62, the sub-pixels forming the fourth viewpoint are mainly arranged in the direction of the central axis 62, and the sub-pixels forming the fifth viewpoint are mainly arranged in the direction of the central axis 62, but this embodiment is not used. To limit the invention. It should be noted that the arrangement of the sub-pixels in the second direction S is periodically arranged according to the coding (in the embodiment, the five sub-pixels are displayed in a display unit 70 and arranged in the second direction S). The arrangement of the sub-pixels encoded in the first direction F differs depending on the tilt angle α.

In addition, the lens array 104 may be integrally formed, and the material of each of the lenticular lenses 60 may be polycarbonate, polymethyl methacrylate, silicone, resin or optical glass. In the present embodiment, the lens array 104 is integrally formed, and the material of each of the lenticular lenses 60 is polymethyl methacrylate with a refractive index of 1.57, but this embodiment is not intended to limit the present invention.

Each sub-pixel (that is, the rectangle in "1st picture" and "2nd picture") has The length L and the width W, when the ratio of the length to the width is 3:1, the inclination angle α may be between 12.53 degrees and 14.04 degrees. In the present embodiment, since each central axis 62 is parallel to the slope generated by the width W of twelve sub-pixels corresponding to the height L of seventeen sub-pixels, the tilt angle α may be 13.24 degrees, but The examples are not intended to limit the invention.

According to the stereoscopic display device of the present invention, since the sub-pixels forming each viewpoint are arranged corresponding to the central axis, the sub-pixels disclosed in the present invention are arranged irregularly in the first direction, and thus the stereoscopic display device can be The moiré effect is reduced, and the zigzag pattern is also reduced around the stereoscopic image, thereby improving the development quality of the stereoscopic display device to solve the problems of the prior art. In addition, the corresponding arrangement of the pixel array and the lens array of the present invention can disperse the resolution reduced in the second direction to the first direction, thereby avoiding the problem of reduced resolution in a single direction.

While the present invention has been described above in terms of the preferred embodiments thereof, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The patent protection scope of the invention is subject to the definition of the scope of the patent application attached to the specification.

60‧‧‧ lenticular lens

62‧‧‧ center axis

102‧‧‧ pixel array

104‧‧‧ lens array

F‧‧‧First direction

S‧‧‧second direction

‧‧‧‧Tilt angle

Claims (3)

A stereoscopic display device comprising: a pixel array comprising a plurality of sub-pixels, each of the sub-pixels having a length and a width; and a lens array comprising a plurality of lenticular lenses arranged in parallel, each of the columns The lens includes a central axis, the central axes are inclined corresponding to a first direction, and each of the central axes has an oblique angle with the first direction, and the ratio of each of the lengths to each of the widths is 3 When the value is 1, the angle of the tilt is greater than 12.53 degrees and less than 14.04 degrees; wherein the lens array is configured to receive and emit light emitted by the sub-pixels, and form P viewpoints at one viewpoint end, forming each The sub-pixels of the viewpoint correspond to the central axes, P ≧ 2 and P is an integer. The stereoscopic display device of claim 1, wherein the materials of the lenticular lenses are polycarbonate, polymethyl methacrylate, silicone, resin or optical glass. The stereoscopic display device of claim 1, wherein the P sub-pixels are a display unit, the display units are arranged along a second direction, and each of the lenticular lenses is associated with the second direction. In the display unit, the first direction and the second direction are perpendicular to each other.