Unlock instant, AI-driven research and patent intelligence for your innovation.

Illuminating device and reflective component

A technology for lighting devices and reflective components, which is applied in the field of backlights, and can solve problems such as difficulty in eliminating light shadows, complex shapes of reflectors, and difficulty in setting the best shape.

Inactive Publication Date: 2005-09-28
NEC LCD TECH CORP
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the lighting device using the metallic luster sheet of the above (1), the luminance of reflected light is high, but since the metallic luster surface regularly reflects the light from the light source, it is difficult to eliminate lamp shadows.
Furthermore, in the case of using the reflecting plate of (2) above, the shape of the reflecting plate is complicated, and it is difficult to set the optimum shape for improving the light emission quality. In addition, there are also problems that the reflecting plate needs to be processed, and the light source and the light source need to be set with high precision. The problem of the positional relationship of the shape of the reflector
Moreover, in the case of using the diffuse reflection sheet of the above (3), because the light from the light source is diffusely reflected, a better light emission quality than that of the above (1) and (2) can be obtained, but from the aspect of product quality, Higher luminous grade required

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Illuminating device and reflective component
  • Illuminating device and reflective component
  • Illuminating device and reflective component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] Next, preferred embodiments of the present invention will be described with reference to the attached drawings. In addition, in the following description, the case where the illuminating device of the present invention is applied to, for example, a 10-inch direct type backlight arranged on the rear side of a liquid crystal display device will be described as an example. figure 1 Shown is a schematic cross-sectional view of the structure of the direct type backlight according to the first embodiment of the present invention. The direct backlight 1 includes a box-shaped frame 11 with one surface open, a diffusion plate 12 as a planar diffusion member arranged to close the opening, and a light source 13 arranged behind (directly below) the diffusion plate 12 .

[0043] For the diffuser plate 12, a white or milky white plate-shaped body such as polycarbonate or acrylic is used. In this embodiment, an acrylic resin plate of the product name [acrylite No432] manufactured by ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A lighting apparatus and a reflecting member thereof are provided to improve the quality of lighting. The vertical backlight of the lighting apparatus has a lens sheet 16 arranged on the reflection surface 15a of the diffusion reflecting sheet 15. With this structure, the light radiating to the diffusion reflection sheet can be uniformly sprayed with high brightness. Thus, a high quality of lighting can be obtained.

Description

technical field [0001] The present invention relates to an illuminating device and a reflecting member, and is applied to a backlight of a liquid crystal display device and the like. Background technique [0002] Conventionally, there is a direct-type backlight as an illuminating device used in a backlight of a liquid crystal display device or the like. In this direct type backlight, a light source is disposed behind (directly below) a diffuser plate as a planar diffuser forming a light emitting surface, and a reflective surface for reflecting light from the light source toward the diffuser plate is disposed behind the diffuser plate. [0003] In this lighting device, if the light on the light-emitting surface is non-uniform light, such as light with residual lamp shadows, brightness differences will occur on the screen of the liquid crystal display device, deteriorating the quality of the screen. Therefore, such a lighting device is required to have a good luminous quality...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/02F21S2/00F21V7/00F21Y103/00G02F1/1335G02F1/13357
CPCG02F1/133605G02F1/133606G02F1/133607
Inventor 羽生笃史
Owner NEC LCD TECH CORP