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Light guide panel for TFT-LCD back light unit and TFT-LCD back light unit and TFT-LCD device

A backlight unit and light guide plate technology, applied in the field of light guide plates, can solve the problems that the back-type backlight unit 20 cannot have, small thickness, etc.

Active Publication Date: 2009-06-17
CHEIL IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the rear type backlight unit 20 cannot have as small a thickness as the edge type backlight unit 10.

Method used

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  • Light guide panel for TFT-LCD back light unit and TFT-LCD back light unit and TFT-LCD device
  • Light guide panel for TFT-LCD back light unit and TFT-LCD back light unit and TFT-LCD device
  • Light guide panel for TFT-LCD back light unit and TFT-LCD back light unit and TFT-LCD device

Examples

Experimental program
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Embodiment Construction

[0040] According to an aspect of the present invention, the above and other objects can be achieved by providing a light guide plate for a TFT-LCD backlight unit. The light guide plate includes: a main light element for directing light incident on its side surface. Is converted into uniform plane light and emits plane light through its upper surface; and auxiliary light guide elements, each of which is provided at a corresponding one of the side surfaces of the main light element, the light is incident on the side surface, and Each secondary light guide element is provided with: a first surface, close to the corresponding side surface of the main light element; a second surface, parallel to the first surface, having a height higher than that of the first surface, and close to the corresponding side surface of the light source A light source, so that light emitted from the light source is incident on the second surface; and a connecting surface for connecting the first surface and ...

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Abstract

Disclosed are a light guide panel for a TFT-LCD back light unit and a TFT-LCD back light unit and a TFT-LCD device having the same. The light guide panel (30) includes a main light guide member (300) for converting light into uniform plane light and emitting the plane light through an upper surface thereof; and subsidiary light guide member (330), each of which is disposed at the corresponding one of the side surfaces of the main light guide member and is provided with a first surface (331) being close to the corresponding side surface of the main light guide member, a second surface (332) being parallel with the first surface (331), having a height higher than that of the first surface (331), and being close to the corresponding one of light sources (305), and connection surfaces (333, 334) for connecting the first surface (331) and the second surface (332).

Description

Technical field [0001] The present invention relates to a light guide plate for a TFT-LCD backlight unit, a TFT-LCD backlight unit and a TFT-LCD device having the light guide plate, and more particularly, to a light guide plate for an edge type TFT-LCD backlight unit A light guide plate and a TFT-LCD backlight unit and a TFT-LCD device having the light guide plate, in which each of the auxiliary light guide elements having a thickness greater than that of the main light guide element is installed in the light source and the main light Between the elements to increase the number of light sources installed in the light source, thereby increasing the brightness. Background technique [0002] Generally, a liquid crystal display (LCD) is not a self-luminous device such as a plasma display panel (PDP) or an organic light emitting diode (OLED), but refers to a device: when planar light is incident on the rear surface of the LCD, The opening and closing of the channel through which the l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357G02B5/02G02F1/133
CPCF21Y2115/10G02B6/0031G02B6/0036G02B6/0061G02F1/133524G02F1/133615H01J61/78
Inventor 池哲求郑伍溶金万硕韩英洙
Owner CHEIL IND INC