JP3188701U - Autostereoscopic display device - Google Patents

Abstract

To provide a stereoscopic image visual display which can be viewed for a long time without eye strain on a large naked eye screen.
A liquid crystal shutter plate 22 and a transparent electrode 23 are provided in front of a color filter 24 of a liquid crystal display, and are switched according to color to prevent color blurring. When a flat image or a three-dimensional image is displayed on a liquid crystal display, multiple parallaxes are provided. The distribution direction of the light of the white backlight 4 is changed by the distribution lenticular lens sheet 2 and at the same time the left and right images are separated by synthesizing the blank portion of the mask ROM.
[Selection] Figure 3

Description

The present invention relates to an autostereoscopic display device that can be viewed for a long time without fatigue with a large screen and a wide field of view in the field of autostereoscopic display devices.

The applicant has devised a multi-parallax sorting lenticular lens sheet for displaying flat images and stereoscopic images. However, when placed between backlight light sources, there is a problem in practically performing left and right separation for stereoscopic display on a liquid crystal display. there were.

The already proposed multi-parallax sorting lenticular lens sheet opens and closes the liquid crystal display, the light-dispersing concave lens, and the liquid crystal shutter unit to reverse the order of the sorting direction during right image projection and left image projection. By controlling the refractive index of light, such as emitting light as it is when displaying a flat image, and arranging this unit on the entire screen and controlling it simultaneously, the traveling direction of light with a wide field of view can be changed.

Utility model registration No. 3176933

The lenticular lens sheet, which is indispensable for autostereoscopic display, is a separation device that delivers separate images to the left and right eyes by sticking them to the display screen, but the right image component and the left image component are input in order for each lens. Yes. Although it has been devised to include a barrier portion to separate it into left and right, if this barrier portion is included in the input content, it was thought that light from the backlight does not pass through and does not come out in that direction.

When displayed in an interlaced manner, if the right image component of the stereoscopic image is displayed in the odd-numbered column and the left image component in the even-numbered column by the odd-numbered and even-numbered scanning lines, the same effect as the method using polarized glasses is obtained. 3D viewing without fatigue of eyes for a long time. However, subtitles and the like do not require stereoscopic display, and are not displayed.

Furthermore, a television that is viewed from a reference plane with a viewpoint is displayed with fine points, such as pixels, so that a flat image, including subtitles, is focused on the screen and viewed with both eyes. In the case of a 3D display, the video portion comes out in the forward direction and is viewed with one eye of the left and right eyes. Naturally, since the focus is on the screen, the eyeball angles of both eyes change so as to face each other. Now the intersecting point becomes an aerial image.

By repeating this display method, if you think that a plane image is a distant view and a stereoscopic image is a close view, if you see a nearby object moving, you can see it, and if the object moves closer, you can move from the viewpoint. Three-dimensionality differs depending on how much the parallax is different in terms of distance. Since the comparison always compares with the reference plane, such repeated display is effective.

Problems to be solved by the device

The present invention can be used with a lens sheet that changes the direction of the light source of the backlight of the liquid crystal display by using the multi-parallax sorting lenticular lens sheet, so that a stereoscopic image can be viewed with the naked eye in a wide field of view without fatigue for a long time. An autostereoscopic display device is provided.

Means to solve the problem

The autostereoscopic display device according to claim 1, wherein a multi-parallax sorting lenticular lens sheet is sandwiched between the white backlight unit and the liquid crystal display unit, and the contents of the planar image, the right image of the stereoscopic image, and the left image are displayed on the liquid crystal display unit. Are input and displayed separately for odd-numbered and even-numbered scanning lines.

According to the autostereoscopic display device of claim 2 of the present invention, a liquid crystal shutter is provided for each color filter for the purpose of preventing color blur on the left and right image display in front of the liquid crystal display unit, and the color of the left and right images is opened by simultaneously opening the liquid crystal shutter for each color. It is characterized by displaying without blur.

According to the autostereoscopic display device according to claim 3 of the present invention, a blank part is created from a mask ROM storing a blank part at the time of a three-dimensional image and is input to the liquid crystal display for a three-dimensional image when a plane image and a three-dimensional image are separated. It is characterized by this.

Effect of device

There is an effect that it is possible to watch naked-eye stereoscopic video viewing for a long time without eye strain, and an effect that a pop-up video, a planar video, subtitles, etc. can be clearly seen. There is a feature that not only the screen can be enlarged but also the color is not blurred.

Hereinafter, an embodiment of the invention will be described with reference to FIGS. FIG. 1 is a view showing an example in which a multi-parallax sorting lenticular lens sheet of a naked-eye stereoscopic video display is combined. Reference numeral 1 denotes a display unit provided with a 2 multi-parallax sorting lenticular lens sheet at the rear, and a 4 white backlight unit illuminates the 1 display unit through the 2 multi-parallax sorting lenticular lens sheet. A three-color filter shutter is provided at the front. Since the 2 multi-parallax sorting lenticular lens sheet can change the direction of the light sorting when inputting the left and right images in the plane image and the stereoscopic image, the 5 image input terminals in the image input circuit shown in FIG. The circuit 1 is input to the 11 memory, while the 9 vertical scanning line scan PULSE circuit is connected to the 10T-FF and connected to the 11 memory. 10T-FF is a device that outputs "1" when a "2" pulse counter is used. This means that the output “1” is output only in the even-numbered column by the counter of the vertical scanning line.

11 memory is connected to 12 horizontal scanning line address counters. When 11 memories are stored, WE (write enable) can be read by writing "1" with the WE pin being "0" at the address specified by the 12 horizontal scanning line address counter. When 10T-FF is “0”, that is, when the scanning line is an odd-numbered column, it is in a writing state.

Left video and right video are input from the 5 video input terminals, and 6 arithmetic circuit 1 outputs data obtained by calculating the difference between the left video data and the right video data.

6 The left and right video difference data is input to the 11 memory from the arithmetic circuit 1, but 10T-FF is written in the odd-numbered state scanning line column of “0”. When the scanning line is even-numbered column, that is, in the state of “1”. 11 memories are connected to 17 arithmetic circuits 2. Further, the right video data is input to the 17 arithmetic circuit 2. The 17 arithmetic circuit 2 incorporates a program for performing the following calculation in order to output left video data.

The program to be calculated is left video data = right video data− (right video data−left video data), but (right video data−left video data) has already been output by the calculation circuit 1.

As a result, the output of the (4) field operation circuit 2 is read and the left video data is displayed.

Next, the 7-center camera video input is connected to a 13 plane stereoscopic switching module. Since the screen is switched interlaced for each field, it is counted by an 8-field counter, and A is output from the A / B / C switching circuit by 15 A / B / C switching circuits in the field (1) and the field (2) by the P input 16 processor. Via the 7 central camera video input.

In the case of field (3) from 16 processors, B is selected for the 15 A / B / C switching circuit, and in the case of field (4), C is selected, and the 14 mask ROM inputs an appropriate blank generation signal to 17 arithmetic circuit 2. At the same time, a signal for switching to each A terminal, B terminal, and C terminal is input to the 20 multi-parallax sorting lenticular lens sheet control circuit at the Q terminal.

FIG. 3 is a diagram of a liquid crystal filter shutter unit for suppressing color blur when sorting left and right images. 21 liquid crystal display through 24 color filter, 22 liquid crystal shutter plate, 23 transparent electrode, 25 color switching means for R color signal input, G color signal input, and B color signal input enter separately with time difference, so the same color is connected to each other Pass through the colors at the same time

The direction in which the light travels from the light source of the 4 white backlight unit is changed via the 2 multi-parallax sorting lenticular lens sheet on the 21 liquid crystal display, but as shown in FIG. 4, 26 blank parts are created in a three-dimensional display and displayed on the 21 liquid crystal display Is done. The blank portion for the right eye is (a) and the blank portion for the left eye is (b). Since the blank part (a) does not reach the right eye, it cannot be seen. The left eye cannot see the blank part (b) because it does not reach. This makes it possible to separate the left and right so that there is no crosstalk. Of course, since there is no blank part when displaying a plane image, it can be projected as it is.

In this way, the autostereoscopic display device can be configured.

  Diagram showing the overall layout of the present invention   Circuit diagram of video input processing of the present invention   Figure of color filter LCD shutter of this invention   The figure which shows the contents of the input picture on the liquid crystal display of this invention   Diagram of the front configuration of the autostereoscopic display screen of the present invention

DESCRIPTION OF SYMBOLS 1 Display part 2 Multi-parallax distribution lenticular lens sheet 3 Color filter shutter part 4 White backlight part 5 Video input terminal 6 Arithmetic circuit 1
7 Central camera video input 8 Field counter 9 Vertical scanning line scan PULSE circuit 10 T-FF
11 Memory 12 Horizontal Scan Line Address Counter 13 Plane Solid Switching Module 14 Mask ROM
15 A / B / C switching circuit 16 Processor 17 Arithmetic circuit 2
18 Interlace input means 19 Autostereoscopic display 20 Multi-parallax sorting lenticular lens sheet control circuit 21 Liquid crystal display 22 Liquid crystal shutter plate 23 Transparent electrode 24 Color filter 25 Switching means 26 Blank portion 27 Transmission screen 28 Lenticular lens sheet

Claims (3)

A multi-parallax sorting lenticular lens sheet is sandwiched between the white backlight unit and the liquid crystal display, and the vertical scan line scan PULSE is stored in the memory so that the content of the plane image and the stereoscopic image is divided into the scan line odd columns or even columns on the liquid crystal display. The pulse from the circuit is input to the T-FF, and 1 output is output by 2 pulses, so that the memory is written and read by the output signals of 0 and 1 from the T-FF, and is divided into odd columns and even columns, and the horizontal scanning line address counter performs horizontal direction An autostereoscopic display device characterized by specifying a location on the screen and calling a video signal immediately below the odd-numbered scanning line to display the left and right images and the central camera image separately. A transparent electrode is provided on the liquid crystal shutter plate to prevent color blur when multiple images are displayed on the front of the liquid crystal display, and at the same time a signal is input for each color, the opening and closing of the liquid crystal shutter plate is controlled so that they are grouped by color 2. The autostereoscopic display device according to claim 1, wherein the liquid crystal shutter plates of the entire screen are operated simultaneously. A mask ROM, which stores blank parts for separating left and right images necessary for 3D images on a liquid crystal display, is called from a counter, overlapped with left and right images to create a blank part, synthesized, and output to a liquid crystal display to separate left and right images. The autostereoscopic display device according to claim 1, wherein the autostereoscopic display device is made easier.

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