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Liquid crystal display

A liquid crystal display, liquid crystal panel technology, applied in static indicators, instruments, nonlinear optics, etc., can solve problems such as difficulty in overcoming the production process

Inactive Publication Date: 2014-08-13
MAPLE VISION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] On the other hand, changes in the physical properties of WV polarizers caused by heat and humidity are attributed to the inherent properties of the polarizers and are difficult to overcome only by improving the cell production process.

Method used

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Embodiment approach

[0054] According to the first embodiment of the present invention, the LCD has an advantageous effect of compensating the hourglass phenomenon by using the diffusion sheet 24 . Specifically, even when the hourglass phenomenon occurs in the weakened region of the polarizer, by reducing the amount of light transmitted through a predetermined region of the diffusion sheet 24 corresponding to the weakened region of the polarizer, the amount of light that can pass through the liquid crystal panel is reduced. The LCD of the present invention can suppress non-uniform brightness.

[0055] Preferably, the diffusion sheet 24 is designed such that the light transmittance of the predetermined regions A, B, C, and D of the diffusion sheet 24 is lower by about 10% to 20% compared with other regions (especially, the central region of the diffusion sheet). . As above (see Figure 4 ), in a conventional LCD, when the hourglass phenomenon occurs, the light transmittance of the weakened region...

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Abstract

Disclosed herein is a liquid crystal display that compensates an hourglass phenomenon using a backlight unit. The liquid crystal display includes a liquid crystal panel, a polarizer adhered to the liquid crystal panel, and a backlight unit including a diffuser sheet. A predetermined region of the diffuser sheet facing a region of the polarizer, where an hourglass phenomenon occurs, is formed to permit a smaller quantity of light to be transmitted therethrough than other regions of the diffuser sheet. With this construction, the liquid crystal display can avoid the hourglass phenomenon from being observed by a viewer, and prevent non-uniform brightness while improving image quality.

Description

[0001] This application is a divisional application of a patent application with an application date of June 14, 2007, an application number of 200780021892.1, and an invention title of "liquid crystal display", and its entire content is hereby incorporated by reference. technical field [0002] The present invention relates to liquid crystal displays, and more particularly, the present invention relates to liquid crystal displays that compensate for the hourglass phenomenon using a backlight unit. Background technique [0003] Among various types of thin displays that have been developed and sold, liquid crystal displays (LCDs) are widely used in the market due to their various advantages. An LCD is a display device that includes two substrates on each side of which an electric field generating electrode is formed, and a liquid crystal material is injected into the two substrates disposed so that the electrode mounting sides face each other. In the gap defined between the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357
CPCG02F1/133606G02F2001/133601G02F1/133611G02F1/133528G02F2203/60G09G3/3426G02F1/133603G09G2320/041G02F1/133601
Inventor 金岐龙
Owner MAPLE VISION TECH
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