JPH06343184A - Binocular spectacle type display - Google Patents

Abstract

PURPOSE:To eliminate the deviation of right and left display video images at the time of viewing two display devices such as liquid crystal display panels or the like with both eyes. CONSTITUTION:Two liquid crystal display panels 3L and 3R for which a displayable area larger than a display area is provided on either one or both of them are arranged corresponding to the right and left eyes. Also, a timing generator 4 for performing display control capable of varying a display timing is used and the deviation of the display position of the video images is corrected by varying the position of the display area within the displayable area of the liquid crystal display panel 3R for instance. Since the display position of the video images is electrically adjusted in terms of circuits, no mechanical limit is present, the deviation of the display video images can be eliminated and also the mechanical mounting accuracy of the display device is not required so much. Also, since the video images at the time of viewing them with both eyes are viewed as one, a burden is not imposed on the eyes even at the time of viewing them for a long time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a binocular spectacles type display which allows one person to enjoy stereoscopic images and the like.

[0002]

2. Description of the Related Art In recent years, a binocular spectacles display in the form of a helmet or goggles to be worn on the head has been developed in order to enjoy stereoscopic images and the like alone or as a display for a virtual reality device. ing.

In this type of binocular spectacle type display,
Two liquid crystal display panels that display images independently on the left and right eyes are arranged. However, when the same image is displayed on these two liquid crystal display panels and both eyes are viewed, the mechanical mounting accuracy of the liquid crystal display panel is If it does not appear, the images do not look like one. Therefore, in such a case, it is necessary to adjust the position of the screen.

5A and 5B are explanatory views showing a conventional method of adjusting the screen position, and 3L and 3R are liquid crystal display panels arranged corresponding to the left and right eyes. Figure 5 (a)
As described above, the right side liquid crystal display panel 3R is displaced to the right by the distance “a” with respect to the left side liquid crystal display panel 3L,
When the image is displaced by the distance "b" in the upward direction, the user sees two identical images twice as indicated by the arrow. Therefore, conventionally, the mounting position of the liquid crystal display panel 3R is moved to mechanically shift the position of the screen by "a" in the horizontal direction and by "b" in the vertical direction in the direction opposite to the direction of the displacement. However, the left and right images are viewed as one as shown by the arrow in FIG.

[0005]

However, in the above-mentioned conventional method of adjusting the screen position in the binocular spectacles type display, there is a limit to the mechanical mounting accuracy of the liquid crystal display panel, so the deviation is completely corrected. I can't
There was a problem that some deviation occurred.

The present invention has been made to solve the above-mentioned problems, and an object thereof is a binocular which can eliminate a deviation between left and right display images when two display devices are viewed with both eyes. It is to provide a spectacles type display.

[0007]

In order to achieve the above object, in the constitution of the binocular spectacles type display of the present invention, two display devices, one or both of which has a displayable area larger than the display area, are provided. And a means for changing the position of the display area within the displayable area of the display device.

Further, in the above structure, the means for varying the position of the display area is a timing generator capable of varying the display timing in the display timing signal of the display device produced by dividing the oscillation signal, or a microcomputer. A rewritable memory may be used, and the microcomputer may generate a display timing signal of a display device at a display timing based on a value written in the memory.

[0009]

In the binocular spectacles type display of the present invention, the display area of the display device arranged corresponding to the left and right eyes is electrically and circuitally shifted to adjust the display position of the image. There is no limit to the image quality, and the gap between the left and right display images when binocular vision is eliminated is eliminated.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention, and FIG. 2 is an explanatory diagram of a screen configuration of a liquid crystal display panel used in this embodiment. In this embodiment, a case where a liquid crystal display panel is used as a display device will be described. In FIG. 1, 1 is an RGB decoder that converts a video signal into an RGB signal, 2 is an RGB driver that distributes the RGB signal to two liquid crystal display panels, 3L and 3R (hereinafter, referred to as 3 when representative). Liquid crystal display panels arranged corresponding to the left and right eyes, 4 is a timing generator for individually controlling the display of the two liquid crystal display panels 3L, 3R, and 5L, 5R are display timing signals generated by the timing generator 4. The liquid crystal control signals for the liquid crystal panels 3L and 3R are shown.

As shown in FIG. 2, the liquid crystal display panel 3 in this embodiment has a displayable area 3b, one or both of which is wider than the display area 3a of the video signal. Further, the timing generator 4 outputs the oscillation signal to R
The liquid crystal control signal 5L and the liquid crystal display panel 3R for the liquid crystal display panel 3L are generated by synchronizing with the synchronizing signal SYNC separated from the video signal in the GB decoder and dividing the frequency.
A liquid crystal control signal 5R for Here, in the present embodiment, the display timing of the liquid crystal control signal 5R for controlling the display of the liquid crystal display panel 3R is changed so that the display area 3a can be moved vertically and horizontally.

In the timing generator 4,
As a means for changing the display timing, a delay circuit using a CR (capacitance value and resistance value) time constant is used, and a method of delaying or advancing the display timing by changing the resistance value with a volume or the like, or a method of dividing the oscillation signal is used. There is a method of delaying or advancing the display timing by changing the wiring of the peripheral circuit. A display timing signal (liquid crystal control signal 5
L, 5R) can be created. In this case, the adjustment value of the display timing is set in a rewritable memory, and the microcomputer creates the display timing signal at the display timing based on the value. By doing so, it is possible to change the display timing by changing the setting value of the memory. Note that these adjustments are preferably performed at the factory stage before shipment.

The operation and action of the embodiment configured as described above will be described. 3 (a) and 3 (b) are explanatory diagrams thereof.

In FIG. 1, a video signal passes through an RGB decoder 1 and an RGB driver 2 and is used for a liquid crystal display panel R.
It is converted into a GB signal and sent to the liquid crystal display panels 3L and 3R. Each liquid crystal display panel 3 distributes and displays the above RGB signals to each pixel by the liquid crystal control signal 5L or 5R generated by the timing generator 4.

Here, when the liquid crystal display panel 3L is used for the left eye and the liquid crystal display panel 3R is used for the right eye, and binocular vision is used when the positions of the left and right liquid crystal display panels 3 are aligned, FIG. As shown in FIG. 5 (b), the image looks like one image, but when the positions of the left and right liquid crystal display panels 3 are displaced, the image does not look like one as shown in FIG. 3 (a). . Now, it is assumed that the liquid crystal display panel 3R on the right side is displaced by "a" in the X (up and down) direction and "b" in the Y (horizontal) direction with reference to the left liquid crystal display panel 3L. Therefore, the display area of the liquid crystal display panel 3R on the right side is shifted by "a" in the X direction and "b" in the Y direction in the opposite direction by changing the display timing of the liquid crystal control signal 5R. By doing so, it is possible to prevent the images from appearing double when viewed with both eyes as shown by the arrow in FIG.

In the above embodiment, an example in which the display area of one liquid crystal display panel is changed is shown. However, both liquid crystal display panels having a displayable area wider than the display area are used, and both liquid crystal display panels are used. It goes without saying that the display position may be adjusted by moving the display area.

Further, when the binocular spectacles type display is mounted and used in a moving body (vehicle, aircraft, etc.) or when the vehicle is mounted and traveling, vibrations and the like caused by traveling of the moving body are transmitted to the spectacles type display. The screen will be blurry and swaying, making the image very difficult to see. Therefore, as an application example of the present invention, as shown in FIG. 4, a sensor such as an angular velocity sensor is attached to the spectacle-type display of the above-described embodiment, a screen sway is sensed, and the sensor circuit 6 operates in a direction opposite to the screen sway. Send the adjustment signal of the display timing of or the adjustment value 7,
In response to this, the timing generator 4 changes the display timing of the liquid crystal control signals 5L and 5R, thereby changing the display area of the liquid crystal display panel 3 in the direction opposite to the screen shift. By doing so, it becomes possible to absorb the flutter of the screen.

As described above, the present invention can be variously applied and various embodiments can be taken in line with the gist thereof.

[0020]

As is apparent from the above description, according to the binocular spectacles type display of the present invention, since the display position of the image is adjusted electrically and circuitally, there is no mechanical limit and there is no left and right. It is possible to eliminate the deviation of the image when the images displayed independently are viewed with both eyes, and it is possible to obtain the advantage that the mechanical mounting accuracy of the display device is not required so much.
In addition, since the images viewed by both eyes are seen as one, it does not burden the eyes even when viewed for a long time.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a screen configuration of a liquid crystal display panel used in the above embodiment.

3 (a) and 3 (b) are explanatory views of the operation of the above embodiment.

FIG. 4 is a block diagram showing an application example of the present invention.

5A and 5B are explanatory views of a conventional technique.

[Explanation of symbols]

 1 ... RGB decoder 2 ... RGB driver 3L, 3R ... Liquid crystal display panel 3a ... Display area 3b ... Displayable area 4 ... Timing generator 5L, 5R ... Liquid crystal control signal

Claims (3)

[Claims] 1. Two display devices, one or both of which have a displayable area larger than the display area, are provided corresponding to the left and right eyes, and the position of the display area is changed within the displayable area of the display device. A binocular spectacles type display comprising a means. 2. The binocular spectacles type display according to claim 1, wherein the means for changing the position of the display area can change the display timing in the display timing signal of the display device created by dividing the oscillation signal. A binocular spectacles type display characterized by being a generator. 3. The binocular spectacles type display according to claim 1, wherein the means for changing the position of the display area is composed of a microcomputer and a rewritable memory.
A binocular spectacles type display, wherein the microcomputer creates a display timing signal of a display device at a display timing based on a value written in the memory.