CN104423051A - Stereoscopic display device - Google Patents

Abstract

A stereoscopic display device comprises a pixel array and a lens array. The pixel array includes a plurality of sub-pixels. The lens array comprises a plurality of cylindrical lenses which are arranged in parallel, each cylindrical lens comprises a central shaft, and each central shaft is inclined corresponding to a first direction and forms an inclined angle with the first direction. The lens array is used for receiving and emitting the light emitted by the sub-pixels, and P viewpoints are formed at one viewpoint end. The sub-pixels forming each viewpoint are arranged corresponding to the central axis. Wherein P is not less than 2 and is an integer. Therefore, the stereoscopic display device can reduce the moire Effect generated by the closer periodic structures of the lens array and the pixel array.

Description

Stereoscopic display device

technical field

The invention relates to a display device, in particular to a stereoscopic display device.

Background technique

At present, there are mainly two methods for stereoscopic display devices to display stereoscopic images. One is that the viewer must wear special glasses to watch the display device, so that the images received by the left eye and the right eye are different, or the images received by the left eye and the right eye are different. Three-dimensional images are produced by alternating eye images. This method requires the viewer to wear additional glasses to see the three-dimensional images, which is inconvenient to use.

The other is a naked-eye display device. This method is to use the grating principle for the display device, so that the viewer does not need to wear any additional devices to make the images seen by the left eye and the right eye different and generate a three-dimensional image. It is currently used in printed matter, baseball cards, or partially naked-eye electronic stereoscopic displays. A conventional stereoscopic display device includes a display panel and a lenticular lens array. The display panel includes a plurality of pixels, and the lenticular lens array is arranged opposite to the pixels. Each pixel includes one or three sub-pixels, and these pixels are arranged in a fixed period, wherein the light emitted by these pixels passes through the lenticular lens array to form an image range, so that the existing three-dimensional display device will produce two images at a specific distance. more than one viewing area.

When the viewer's left eye and right eye are respectively in two different viewing areas, the viewer can watch the stereoscopic image. However, since the size of the periodic structure of the display panel and the pixel array is relatively close, it is easy for the light emitted from the display panel to present uneven light patterns after passing through the lenticular lens array, so that the viewer is easy to see the fixed interval when viewing the stereoscopic image. The change of the light and dark lines of the light and dark lines produces the so-called moire effect (Moiré Effect), which seriously affects the image quality of the stereoscopic display device.

Contents of the invention

The purpose of the present invention is to provide a stereoscopic display device to solve the problems in the prior art.

The invention provides a stereoscopic display device, which includes a pixel array and a lens array. The pixel array includes a plurality of sub-pixels, and the lens array includes a plurality of cylindrical lenses arranged in parallel. Each lenticular lens includes a central axis, each central axis is inclined corresponding to a first direction, and each central axis forms an inclination angle with the first direction. Wherein, the lens array is used for receiving and emitting the light emitted by the sub-pixels to form P viewpoints at one viewpoint, where P≧2 and P is an integer. The sub-pixels forming each viewpoint are arranged corresponding to the central axis.

In an embodiment of the present invention, each sub-pixel has a length and a width, and 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 view point are arranged corresponding to the central axis, the arrangement of the sub-pixels disclosed in the present invention in the first direction is relatively irregular. Therefore, the stereoscopic display device can The moiré effect is reduced, and the jaggedness around the stereoscopic image is also reduced, thereby improving the image 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 resolution reduction in a single direction.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

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

FIG. 2 is a partially enlarged schematic diagram of the stereoscopic display device according to FIG. 1 .

Among them, the attached village

Detailed ways

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail together with the accompanying drawings.

Please refer to FIG. 1 and FIG. 2 , which are respectively a schematic top view of an embodiment of a stereoscopic display device according to the present invention and a partially enlarged schematic diagram of the stereoscopic display device according to FIG. 1 . 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 FIG. 1 and FIG. 2 ). In this embodiment, the pixel array 102 may include 315 sub-pixels, each column may have 35 sub-pixels (that is, thirty-five sub-pixels arranged along the second direction S), each row may have 9 sub-pixels For a pixel (that is, nine sub-pixels arranged along the first direction F), the first direction F and the second direction S are perpendicular to each other, but this embodiment is not intended to limit the present invention.

The lens array 104 includes a plurality of lenticular lenses 60 arranged in parallel, each lenticular lens 60 includes a central axis 62, each central axis 62 is oblique to the first direction F, and each central axis 62 and the first direction F are sandwiched by a inclination angle α. Among them, P sub-pixels (ie, the rectangle in FIG. 1 and FIG. 2 ) are used as a display unit 70, and the display units 70 are arranged along the second direction S, and each lenticular lens 60 corresponds to a display unit 70 in the second direction S. (That is, the width of each lenticular lens 60 in the second direction S is equal to the width W of the P sub-pixels). The lens array 104 is used to receive and emit the light emitted by the sub-pixels to form P viewpoints at one viewpoint, where P≧2 and P is an integer. In this embodiment, with five sub-pixels as one display unit 70 , the stereoscopic display device can form five viewpoints (ie, P=5), but this embodiment is not intended to limit the present invention.

Wherein, the sub-pixels forming each viewpoint are arranged corresponding to the central axis 62 . In more detail, please refer to FIG. 2. In this embodiment, the encoding of the sub-pixels forming the first viewpoint can be 1, the encoding of the sub-pixels forming the second viewpoint can be 2, and the encoding of the sub-pixels forming the third viewpoint can be 2. The coding of the sub-pixel can be 3, the coding of the sub-pixel forming the fourth viewpoint can be 4, the coding of the sub-pixel forming the fifth viewpoint can be 5, and the sub-pixel forming the first viewpoint (that is, coded as 1 The sub-pixels) are arranged corresponding to the central axis 62, and the sub-pixels forming the second viewpoint (that is, the sub-pixels coded as 2) are arranged corresponding to the central axis 62, forming the sub-pixels of the third viewpoint (that is, the sub-pixels coded as 3 The sub-pixels) are arranged corresponding to the central axis 62, and the sub-pixels forming the fourth viewpoint (that is, the sub-pixels coded as 4) are arranged corresponding to the central axis 62, forming the sub-pixels of the fifth viewpoint (that is, the sub-pixels coded as 5 The sub-pixels) are arranged corresponding to the central axis 62 . In other words, the sub-pixels forming the first viewpoint are mainly arranged along the direction of the central axis 62, the sub-pixels forming the second viewpoint are mainly arranged along the direction of the central axis 62, and the sub-pixels forming the third viewpoint are mainly arranged along the central axis 62. 62, the sub-pixels forming the fourth viewpoint are mainly arranged along the direction of the central axis 62, and the sub-pixels forming the fifth viewpoint are mainly arranged along the direction of the central axis 62, but this embodiment is not intended to limit the present invention. It should be noted that the arrangement of sub-pixel codes in the second direction S is periodically arranged according to the codes (in this embodiment, five sub-pixels are used as a display unit 70 and arranged along the second direction S), The arrangement of codes and sub-pixels in the first direction F is different according to the tilt angle α.

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

Each sub-pixel (ie, the rectangle in FIG. 1 and FIG. 2 ) has a length L and a width W. When the ratio of the length to the width is 3:1, the tilt angle α can be between 12.53 degrees and 14.04 degrees. In this embodiment, since each central axis 62 is arranged parallel to the slope generated by the width W of twelve sub-pixels corresponding to the height L of seventeen sub-pixels, the inclination angle α may be 13.24 degrees, but in this embodiment It is not intended to limit the invention.

According to the stereoscopic display device disclosed in the present invention, since the sub-pixels forming each view point are arranged corresponding to the central axis, the arrangement of the sub-pixels disclosed in the present invention in the first direction is relatively irregular. Therefore, the stereoscopic display device can reduce The moiré effect and the jaggedness around the 3D image are also reduced, thereby improving the image quality of the 3D display device, so as to solve the existing problems in 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 resolution reduction in a single direction.

Of course, the present invention can also have other various embodiments, and those skilled in the art can make various corresponding changes and deformations according to the present invention without departing from the spirit and essence of the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (4)

1. A stereoscopic display device, characterized in that, comprising: a pixel array including a plurality of sub-pixels; and A lens array, including a plurality of cylindrical lenses arranged in parallel, each of the cylindrical lenses includes a central axis, the central axes are inclined corresponding to a first direction, and each of the central axes and the first direction has an inclination horn; Wherein, the lens array is used to receive and emit the light emitted by the sub-pixels, and form P viewpoints at one viewpoint, and the sub-pixels forming each viewpoint are arranged corresponding to the central axes, P≥ 2 and P is an integer. 2. The stereoscopic display device according to claim 1, wherein each of the sub-pixels has a length and a width, and when the ratio of each of the lengths to each of the widths is 3:1, each of the sub-pixels The inclination angle is between 12.53 degrees and 14.04 degrees. 3. The stereoscopic display device according to claim 1, wherein the lenticular lenses are made of polycarbonate, polymethyl methacrylate, silica gel, resin or optical glass. 4. The stereoscopic display device according to claim 1, wherein the P sub-pixels are used as a display unit, and the display units are arranged along a second direction, and each of the lenticular lenses is in the second direction. The direction corresponds to one display unit, and the first direction and the second direction are perpendicular to each other.