Illuminating device, display device, and method of manufacturing light modulation element

A technology for light modulation elements and lighting equipment, applied in lighting and heating equipment, optical elements, light guides of lighting systems, etc., can solve problems such as difficulty in implementing partial modulation of light sources, and achieve light leakage elimination, high transparency, and improved display brightness. Effect

Inactive Publication Date: 2012-08-15
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the edge lighting method, it is difficult to perform partial driving that partially modulates the light intensity of the light source

Method used

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  • Illuminating device, display device, and method of manufacturing light modulation element
  • Illuminating device, display device, and method of manufacturing light modulation element
  • Illuminating device, display device, and method of manufacturing light modulation element

Examples

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example

[0097] Examples of the present invention will be described below. Note that the examples are illustrative, and the present invention is not limited to these examples.

[0098] [Unit formation method]

[0099] An electrode pattern having a width of 10 mm was formed by a laser ablation method on an ITO-coated glass substrate (125 mm×125 mm). The resultant was subjected to ultrasonic application cleaning with an alkaline detergent, rinsed with ultrapure water, and dried by air blowing to form an electrode pattern substrate. Then, a vertical alignment film made of a polyimide-based material was coated on the electrode pattern substrate by a spin coater, and baked at 200° C. to form a vertical alignment film. Then, plastic beads having an average diameter of 7 μm were scattered on the electrode pattern substrate on which the alignment film was formed, and thereafter a thermosetting sealant was applied on the periphery. In addition, opposing electrode pattern substrates are overl...

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Abstract

The invention provides an illuminating device, display device, and method of manufacturing light modulation element. The illuminating device includes a light guide plate, a light source disposed on a side face of the light guide plate, and a light modulation element disposed on a surface or on inside of the light guide plate and joined to the light guide plate. The light modulation element has a pair of transparent substrates disposed apart from each other and opposed to each other, a pair of electrodes provided on surfaces of the pair of transparent substrates, and a light modulation layer provided in a gap between the pair of transparent substrates. The light modulation layer includes a first region and a second region both having optical anisotropy and having response speeds to an electric field different from each other.

Description

technical field [0001] The present invention relates to a lighting device, a display device, and a method of manufacturing a light modulation element that illuminate a light modulation element that exhibits light scattering or transparency. Background technique [0002] In recent years, improvements in picture quality and power saving of liquid crystal displays are rapidly progressing, and a method of achieving an improvement in contrast in dark places by partially modulating the light intensity of a backlight has been proposed. This method mainly partially drives light emitting diodes (LEDs) serving as light sources of the backlight to modulate the light of the backlight according to a displayed image. In addition, for large liquid crystal displays, the demand for thickness reduction is gradually increasing as in small liquid crystal displays. Therefore, instead of a method of placing a cold cathode fluorescent lamp (CCFL) or LED directly under a liquid crystal panel, an e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1335G02F1/01G02F1/13G02F1/13357F21S2/00F21V8/00F21V14/00
CPCG02F1/1334G02F1/133615
Inventor 奥山健太郎水野守佐藤晴美铃木知明铃木友美
Owner SONY CORP
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