Light conducting plate, its liquid crystal device and image displaying method with the device

Abstract

Disclosed are a light guide plate, a front illumination type liquid crystal display device using the same, and a method for displaying an image therein. A light reflection pattern is formed on a light reflection surface of the light guide plate so as to change an optical distribution and prevent the moiré phenomenon. The light reflection pattern prevents the light from being leaked through a side of the light guide plate, so an effective display area is not divided into a bright area, a boundary area, and a dark area. It is possible to change the optical distribution and to prevent the moiré phenomenon, so the liquid crystal display device can display an image with an improved brightness uniformity.

Description

technical field [0001] The present invention relates to a light guide plate, a liquid crystal display device with the light guide plate, and a method for displaying images using the liquid crystal display device, in particular to a light guide plate, a liquid crystal display device with the light guide plate, And a method of displaying an image using the liquid crystal display device, wherein, by using the liquid crystal, the display function can be performed even in a dark place, while preventing the moiré phenomenon (moiré phenomenon) and required by limiting the moiré phenomenon Non-uniform brightness caused by the structure, thus realizing high-quality display function. Background technique [0002] In general, a liquid crystal display device is a display device that precisely controls light transmission of liquid crystals by utilizing electro-optic characteristics of liquid crystals so that a user can recognize information processed in an inform...

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Problems solved by technology

[0031] When the effective display area is divided into three areas, although the moiré phenomenon can be prevented, the brightness non-uniformity is obviously caused in each area due to the variation of the brightness

[0032] Accordingly, when the extending direction of the light reflection pattern 3 formed on the light guide plate 4 coincides with the arrangement direction of the pixel electrodes 6a, although the effective display area is not divided into a dark area and a bright area, a moiré phenomenon occurs

In addition, when the extending direction of the light reflection pattern 3 formed on the light guide plate 4 deviates from the arrangement direction of the pixel electrodes 6a, although the moiré phenomenon can be reduced, the luminance non-uniformity phenomenon occurs in the effective display area

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