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Liquid crystal display device

A technology of liquid crystal display devices and liquid crystal display panels, applied in light guides, optics, instruments, etc., can solve problems such as narrow field of view, and achieve the effect of high contrast and easy brightness distribution

Inactive Publication Date: 2008-11-05
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some methods (for example, methods using TN-type or STN-type liquid crystal display elements) have a disadvantage of a narrow viewing angle, and various technological developments are being made to solve this problem.

Method used

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  • Liquid crystal display device
  • Liquid crystal display device
  • Liquid crystal display device

Examples

Experimental program
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Embodiment approach 1

[0073] figure 1 The liquid crystal display device 100 of this embodiment is shown. Such as figure 1 As shown, the liquid crystal display device 100 includes a liquid crystal display panel 20 , an illuminating element (backlight) 10 disposed on the rear side of the liquid crystal display panel 20 , and a light diffusing element 30 disposed on the viewer's side of the liquid crystal display panel 20 .

[0074] The liquid crystal display panel 20 has a pair of substrates 21 and 22 and a liquid crystal layer 23 disposed therebetween. On the surfaces of the substrates 21 and 22 on the liquid crystal layer 23 side, electrodes for applying a voltage to the liquid crystal layer 23 and alignment films (both not shown) for defining the alignment direction of liquid crystal molecules contained in the liquid crystal layer 23 are formed. . In addition, in this embodiment, the color filter 24 is provided on the side of the liquid crystal layer 23 of the substrate 22 arranged on the vie...

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PUM

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Abstract

Disclosed is a liquid crystal display device comprising a light diffusion element, which enables a display with a high contrast ratio over a wide angle by realizing a desired luminance distribution. Specifically disclosed is a liquid crystal display device comprising a liquid crystal display panel for modulating light emitted from a light source, and a light diffusion element arranged on the viewer side of the liquid crystal display panel. The light diffusion element is a prism sheet including a plurality of prisms (31). Each prism (31) has a first prism portion (31a) including a first inclined surface (31s1) which is inclined at a first angle to the display surface normal, and a second prism portion (31b) which is arranged on the viewer side of the first prism portion and includes a second inclined surface (31s2) which is inclined at a second angle, that is different from the first angle, to the display surface normal. Such a liquid crystal display device is used for mobile electronic devices typified by mobile phones and PDAs.

Description

technical field [0001] The present invention relates to a liquid crystal display device, and more particularly to a liquid crystal display device having a light diffusing element for diffusing light emitted from a liquid crystal display panel. Background technique [0002] In recent years, portable electronic devices typified by mobile phones and PDAs (Personal Digital Assistants) have been widely used. Liquid crystal display devices having advantages such as thinness, light weight, and low power consumption are used in display portions of portable electronic devices. [0003] A liquid crystal display device differs from a self-luminous display device such as a CRT or a PDP (Plasma Display Panel) in that the display element itself does not emit light. Therefore, in a transmissive liquid crystal display device, an illuminating element called a backlight is provided on the back side of the liquid crystal display element, and the liquid crystal display element controls the tra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1335G02B5/02G02F1/13357
CPCG02B5/0278G02B5/0231G02B5/0257G02B6/0051G02B6/0053G02F1/133504
Inventor 御园健司村田充弘宫崎伸一
Owner SHARP KK
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