JPH04156419A - Two-image simultaneous display panel - Google Patents

Abstract

PURPOSE:To obtain an stereoscopic image easily by combining a display panel with a polarizing filter and a display panel without a polarizing filter. CONSTITUTION:A first display panel 9 is overlapped with a second display panel 10 of the structure formed by removing a polarizing filter from the first display panel 9. The light from the first display panel 9 is controlled in the direction of polarization by the second display panel 10. When the light subjected to this control is looked at through one-way polarizing spectacles, the light is visible at one part and unvisible at the other part. If spectacles with the left eye part and the right eye part having different polarizing directions is used, the light is divided into a part visible only by the right eye and a part visible only the left eye. Two images can be thereby displayed simultaneously by forming the image for the right eye and the image for the left eye appropriately so as to enable the formation of a stereoscopic image.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a two-image simultaneous display pile in which a pair of liquid crystal panels are stacked one on top of the other and output light can be polarized by one of the liquid crystal panels.

(Conventional Technique) As shown in FIG. 3, a liquid crystal panel has transparent electrodes 2 supported inside a pair of spaced apart glass substrates 1.

An alignment film 3 facing the inside of the transparent electrode 2 is arranged, and a liquid crystal 4 is sealed between the reorientation films 3. In the illustrated example, a color filter 5 is interposed between one glass substrate 1 and a transparent electrode 2 to enable color display. Reference numeral 6 indicates a subaree that maintains the dimension between the facing alignment films 3. A polarizing filter 7 is arranged outside the glass substrate 1. Two polarizing filters 7
For example, if the polarization direction is orthogonal so that the light does not pass through,
Uru.

Bank light (light) is projected from one polarizing filter 7, an image generation control signal is sent to the transparent electrode, the twisting of the liquid crystal is controlled for each pixel, and the light that passes through the lower polarizing filter is selected.

(Problems to be Solved by the Present Invention) Since the conventional liquid crystal panel as described above is for producing images, for example, it cannot produce images for the right and left eyes or stereoscopic images.

Therefore, the problem to be solved by the present invention is to develop a display panel that allows two images to be displayed and enables unprecedented applications.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention basically provides technical means for combining a display panel with a polarizing filter and a display panel without a polarizing filter. adopt.

More specifically, the present invention comprises a transparent electrode and an alignment film arranged inside a pair of spaced apart glass substrates, a liquid crystal between the facing alignment films, and a polarizing filter arranged outside the glass substrate. a first display panel having; a second display panel having a transparent electrode and an alignment film disposed inside a pair of spaced apart glass substrates, and a liquid crystal between the opposing alignment films; A display panel provides a temporal display pulse between two images that polarizes light from the first display panel. The term "simultaneously" as used herein refers to the time when images are generated on the entire surface of the panel, and includes cases where each pixel forming the entire surface is generated sequentially or simultaneously.

(Function) In the present invention, the polarization direction of light from the first display panel is controlled by the second display panel.

When this controlled light is viewed through unidirectional polarized glasses, some parts are visible and others are invisible. Furthermore, if you use glasses that change the polarization direction between your left and right eyes, the light will be divided into a part that can only be seen with the right eye and a part that can only be seen with the left eye. Therefore, by appropriately creating an image for the right eye and an image for the left eye, the two images can be displayed simultaneously and a three-dimensional image can be created.

(Example) Refer to FIG. 1. The two-image time display panel 8 is a first display panel 9 having the same structure as the conventional display panel shown in FIG.
and a second display panel 10 having a configuration in which the polarizing filter is removed from the first display panel 9 are stacked. Backlight(
light) passes through the polarizing filter of the first display panel 9,
It passes through an alignment film, a liquid crystal, an alignment film again, a color filter in the case of color, and finally a glass substrate and a polarizing filter to generate an image.

In the present invention, a second display panel 10 consisting of a light distribution film, a liquid crystal, and a light distribution film is further provided after this, and this liquid crystal is controlled.
The polarization direction of the final passing light will be controlled again.

The newly added second display panel 10 makes it possible to control the polarization of light for each pixel, making it possible to create the following images.

■An image in which the polarization direction is changed for each pixel ■An image in which the polarization direction is changed for each horizontal line or vertical line ■An image with partially different polarization ■An image with polarization in one direction across the entire surface■, ■, or ■ images , two images with horizontal and vertical polarization can be displayed simultaneously. ■
With this method, different images can be switched and displayed on each screen (panel).

Image generation in the case (2) shown in FIG. 1 will be described.

The control function diagram is shown in Fig. 2. The left side is the image control section, and the right side is the liquid crystal section for one line. Image data regarding two images (A, B) is present in the image generator. The image generation section alternately outputs the data of the A image and the data of the 8 images. The image generation control section alternately creates dot images on the liquid crystal panel 9 based on the contrast, color information, etc. contained therein. At this time A
When outputting the image data, the vertical/horizontal polarization control section controls the liquid crystal panel IO so that the image data is vertically polarized. When generating 8 images, the light should be horizontally polarized. This results in
In the case of 8 images, a longitudinal wave is output, and in the case of 8 images, a transverse wave is output from the display panel.

If you look at the above-mentioned image with "polarized glasses" on, you will see an image that matches the polarization direction, but you will not be able to see an image polarized by 90 degrees. If you use glasses that have different polarization directions for your left and right eyes, your eyes will be divided into a part where only your right eye can see and a part where you can only see with your left eye.

Image data A is for the right eye and B is for the left eye, and when the image is displayed on this new second display panel and viewed through glasses with left and right polarization directions different, it is possible to recognize it as a three-dimensional image.

External data/control signals (for example, wireless signals from a television broadcasting station or signals from other computers) shown in Figure 2
) as the image signal of A, , B2 image and i'iit
When the lateral control No. 1 is transferred to the image generating section Q, the control mentioned above becomes possible, and it becomes possible to display a stereoscopic image using an external signal.

In the case of 21 image data, if a control signal is added to output only one polarized light wave, it can be displayed as a normal single image.

(Effects) According to the present invention, a stereoscopic image can be easily obtained by simple modification and combination of existing display panels.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an example of the present invention, FIG. 2 is a diagram showing a control system, and FIG. 3 is a partial sectional view of an example of a liquid crystal panel. In the figure, 21-glass substrate, 2-transparent electrode, 3-orientation j pattern,
4 liquid crystal, 7-polarizing filter, 9-first display panel, 10-
Second display panel.

Claims (2)

[Claims] (1) A first display panel including a transparent electrode and an alignment film arranged inside a pair of spaced apart glass substrates, a liquid crystal between the facing alignment films, and a polarizing filter arranged outside the glass substrate. a second display panel having a transparent electrode and an alignment film disposed inside a pair of spaced apart glass substrates, and a liquid crystal between the facing alignment films;
A two-image simultaneous display panel that polarizes the light from the display panel. (2) An image generation control signal is supplied to the transparent electrode of the first display panel, and a signal for controlling the polarization of light is supplied to the transparent electrode of the second display panel for each pixel and each vertical or horizontal line ( 1) Two-image simultaneous display panel.