JPH052216A - Projection liquid crystal display device - Google Patents

Abstract

(57) [Summary] The projection type liquid crystal display device of the present invention is provided with one liquid crystal panel 4 including a plurality of display areas having different display colors, a mirror 5 and a polarization beam splitter 6, and the liquid crystal panel is provided. 4 to display a color image, then use the mirror 5
The polarization beam splitter 6 is configured to combine images. [Effect] It is possible to improve the visibility without lowering the resolution.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projection type liquid crystal display device for enlarging and displaying an image on a liquid crystal panel.

[0002]

2. Description of the Related Art A conventional projection type liquid crystal display device of this type is
It is configured as shown in FIGS. 4 and 5. In FIG. 4, the light emitted from the projection light source 30 is converted into parallel light by the condenser lens 31, and is irradiated onto the liquid crystal panel 32. The image data supplied from the signal generator 34 is displayed as an image on the liquid crystal panel 32. This image is magnified by the projection lens 33 and projected on the signal generator 35. When the liquid crystal panel 32 is a color liquid crystal panel, as shown in FIG. 5, one color pixel is composed of three pixels, a red pixel 40, a green pixel 41, and a blue pixel 42.

[0003]

In this conventional projection type liquid crystal display device, the image on the liquid crystal panel is enlarged and displayed.
When the liquid crystal panel is a color liquid crystal panel, there is a problem that the resolution is lowered because color display is performed by a plurality of pixels. For example, when the liquid crystal panel 32 is a color liquid crystal panel, as shown in FIG. 5, one color pixel is composed of three pixels of a red pixel 40, a green pixel 41, and a blue pixel 42, so that a monochrome display is performed. In comparison, the resolution is reduced to 1/3, and there is a problem that visibility is poor.

The present invention has been made in view of the above problems, and it is an object of the present invention to prevent deterioration of resolution and improve visibility.

[0005]

In order to achieve the above object, the projection type liquid crystal display device of the present invention includes one liquid crystal panel having a plurality of display areas having different display colors and a liquid crystal panel. It is arranged to provide a mirror and a polarizing beam splitter for combining the images.

[0006]

In the projection type liquid crystal display device having the above structure, a color image is displayed using one liquid crystal panel having a plurality of display areas of different display colors, and then the images are combined by a mirror and a polarization beam splitter. Therefore, it is possible to improve the visibility without lowering the resolution.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block connection diagram showing an embodiment of a projection type liquid crystal display device according to the present invention. Here, a case where a color image is displayed as a two-color image of red and blue is taken as an example. In FIG. 1, the light emitted from the projection light source 1 is converted into parallel light by the condenser lens 2 and applied to the liquid crystal panel 4. On the liquid crystal panel 4, the image data supplied from the signal generator 3 is displayed as an image. This image is combined by the mirror 5 and the polarization beam splitter 6 and enlarged and projected on the screen 8 by the projection lens 7.

As shown in FIG. 2, the liquid crystal panel 4 comprises a red display area 14 and a blue display area 15. The red display data supplied from the signal generator 3 is supplied to the red display X driver 1 at the timing specified by the Y driver 11.
2 is displayed in the red display area 14. The blue display data supplied from the signal generator 3 is the Y driver 1
Blue display X driver 13 at the timing specified from 1
Is displayed in the blue display area 15.

Red display area 14 and blue display area 15
Is composed of pixels as shown in FIG. 3, the red pixel 22 and the blue pixel 25 correspond to each other, and similarly, the red pixel 23 and the blue pixel 26,
The red pixel 24 and the blue pixel 27 correspond to each other. Therefore,
By combining the images displayed in the red display region 14 and the blue display region 15 with the mirror 5 and the polarization beam splitter 6, the corresponding red and blue pixels are superimposed and displayed as a color image. Become.

[0010]

As described above, according to the projection type liquid crystal display device of the present invention, a color image is displayed using one liquid crystal panel including a plurality of display areas having different display colors,
Since the images are combined by the mirror and the polarization beam splitter, the visibility can be improved without lowering the resolution.

[Brief description of drawings]

FIG. 1 is a block connection diagram showing an embodiment of a projection type liquid crystal display device according to the present invention.

FIG. 2 is a block connection diagram showing an embodiment of a projection type liquid crystal display device according to the present invention.

FIG. 3 is a front view of a liquid crystal panel showing an embodiment of a projection type liquid crystal display device according to the present invention.

FIG. 4 is a block connection diagram showing an example of a conventional projection type liquid crystal display device.

FIG. 5 is a front view of a liquid crystal panel showing an example of a conventional projection type liquid crystal display device.

[Explanation of symbols]

 1 Projection Light Source 2 Condenser Lens 3 Signal Generator 4 Liquid Crystal Panel 5 Mirror 6 Polarizing Beam Splitter 7 Projection Lens 8 Screen 11 Y Driver 12 Red Display X Driver 13 Blue Display X Driver 14 Red Display Area 15 Blue Display Area 22 ~ 24 Red pixel 25 ~ 27 Blue pixel

Claims (1)

Claim: What is claimed is: 1. A liquid crystal panel comprising a plurality of display regions having different display colors, a mirror for synthesizing an image displayed on the liquid crystal panel, and a polarization beam splitter. Projection type liquid crystal display device.