JPH06214250A - Liquid crystal projector - Google Patents

Abstract

PURPOSE:To improve resolution by brightening the screen of the liquid crystal projector. CONSTITUTION:The pixel arrangement of one liquid crystal projector is formed as repeating arrays of red, blue and green. The arrays of glue, green and red are repeated by shifting the pixels by as much as half the pixel from the above- mentioned arrays, by which a display panel is constituted. The pixel arrangement of the other liquid crystal projector is constituted of the repeating arrays of blue, green and red formed by shifting the pixels by half the pixel from the display panel and the repeating arrays of red, blue and green formed by shifting the pixels by half the pixel from these arrays. The respective liquid crystal projectors are superposed on each other, by which one sheet of the screen is constituted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal projector.

[0002]

2. Description of the Related Art In principle, a liquid crystal projector uses a liquid crystal panel instead of the slide of a conventional slide projector. An example of a conventional single-panel color liquid crystal projector is shown in FIG. In the figure, 61 is a light source, and 62
Is a condenser lens, 63 is a transmissive liquid crystal display panel, 64 is a projection lens, and 65 is a screen. The liquid crystal panel is basically monochrome, and in order to obtain a color image, a color filter is attached to the surface of the liquid crystal panel. When manufacturing the liquid crystal display panel of the liquid crystal projector, at present, if the size of the liquid crystal panel is increased, the size of the projection lens must be increased accordingly, and the cost of the lens increases, It is not possible to use an LCD panel that is too large. Further, it is difficult to reduce the size of the pixels forming the liquid crystal panel as much as possible in view of the current fine pixel pattern processing technology. For the above reasons, at present, for example, the maximum size of the liquid crystal panel (diagonal line) is 3 inches, and the degree of integration is about 100,000 pixels (about 300 vertical pixels × 300 horizontal pixels). 1 for monochrome for the above reasons
3 inch LCD panel displaying with 0,000 pixels
When used as a color display panel in which one picture element is composed of three (red), B (blue), and G (green) pixels, the number of picture elements becomes one-third as compared with the case of monochrome. Therefore, the resolution is reduced accordingly.

[0003]

As described above, when large-screen projection is performed using a conventional liquid crystal display panel, the brightness decreases with enlargement, the screen becomes darker, and the resolution is conspicuous. Had. SUMMARY OF THE INVENTION It is an object of the present invention to provide a liquid crystal projector that solves the above-mentioned problems and does not reduce the resolution even when enlarged and does not darken the screen.

[0004]

In order to solve the above problems, the present invention provides a pixel array of one liquid crystal projector,
A red, blue, and green column is repeated, a pixel is shifted by half a pixel from this column, and a blue, green, and red column is repeated to form a display panel. Shift the pixels by half a pixel with respect to the display panel,
It consists of a repeating row of blue, green, and red, and a row of repeating red, blue, and green by shifting the pixel by half a pixel with respect to this row. did.

[0005]

As described above, the brightness and resolution of the screen can be almost doubled by combining the two color liquid crystal projectors having the same image pattern and combining the screens.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A liquid crystal projector according to the present invention comprises two projectors. An embodiment of a liquid crystal projector according to the present invention will be described in detail below with reference to the drawings. The embodiment of FIG. 1 is a case in which the screens of two projectors are overlapped to synthesize one screen, where 1 is the screen of one projector and 2 is R (red), G (green), B (blue)
It is a color picture element composed of three colors. Reference numerals 3 to 5 are pixels forming the respective portions of R, G and B. 6 is the screen of the other projector, 7 is R (red),
It is a color picture element composed of three colors of G (green) and B (blue). Reference numerals 8 to 10 are pixels constituting the respective R, G and B portions. 11 is a case where the screens of the respective projectors are overlapped to compose one screen, and 12 is an R screen.
Two pixels of color composed of three colors of (red), G (green), and B (blue). By combining one screen with the two projectors, a screen as shown in 12 is obtained. FIG. 2 is an explanatory view of adjusting the projection angles of the two projection devices by a projection angle adjuster and combining the screens.
Is a screen and 42 is the inside of the liquid crystal projector. 43
Reference numerals 44 and 44 are projection devices, 45 and 46 are rotary shafts for adjusting the vertical angle of the projection device, and they are supported by support plates 47 and 48. 49 and 50 are turntables for adjusting the horizontal angle of the projection device and are designed to rotate in conjunction with the rotation axes of 51 and 52. 53
Is a support for the projection device and the projection angle adjuster. With such a configuration, it is possible to project separate screens on the screen by the two projection devices to form a multi-screen, or to superimpose the respective screens to make the screen brighter and improve the resolution. .

[0007]

As described above, according to the liquid crystal projector of the present invention, the brightness of the screen can be doubled and the resolution can be doubled by combining the two screens. is there.

[Brief description of drawings]

FIG. 1 is a principle diagram of a liquid crystal projector according to the present invention.

FIG. 2 is a configuration diagram of a liquid crystal projector according to the present invention.

FIG. 3 is a configuration diagram of a conventional liquid crystal projector.

[Explanation of symbols]

 1 Projector screen 2 Color pixel 3 Red pixel 4 Green pixel 5 Blue pixel 6 Projector screen 7 Color pixel 8 Red pixel 9 Green pixel 10 Blue pixel 11 Composite screen 12 Color pixel

Claims (1)

[Claims] 1. One of the pixel arrays is a column in which red, blue, and green are repeated, and a pixel is shifted by half a pixel with respect to this column, and blue,
A display panel configured by repeating green and red columns and a pixel array on the other side are arranged by shifting pixels by half a pixel with respect to the display panel, and repeating columns of blue, green, and red A liquid crystal projector device characterized in that a display panel is formed by shifting pixels for each pixel and repeating rows of red, blue and green.