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Backlight assembly of liquid crystal display

A technology of backlight device and liquid crystal substrate, which is applied in the directions of instruments, optics, nonlinear optics, etc., and can solve problems such as reducing the uniformity of brightness distribution of the screen and the overall quality of the image

Inactive Publication Date: 2007-02-07
BOE HYDIS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This reduces the uniformity of picture brightness distribution and the overall quality of the image displayed on the LCD screen

Method used

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  • Backlight assembly of liquid crystal display
  • Backlight assembly of liquid crystal display
  • Backlight assembly of liquid crystal display

Examples

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Embodiment Construction

[0038] The present invention will be described more fully hereinafter with reference to the accompanying drawings that illustrate exemplary embodiments of the invention. This invention may, however, be embodied in different forms and should not be construed as limited to the exemplary embodiments set forth herein. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Throughout the specification and drawings, like reference numerals refer to like elements.

[0039] First of all, the diffusion plate or the prism sheet of the backlight module is not a main feature of the exemplary embodiments of the present invention, and thus will not be described in detail below or illustrated in the drawings.

[0040] first exemplary embodiment

[0041] figure 2 is a perspective view of a backlight device of an LCD according to a first exemplary embodiment of the...

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Abstract

A backlight assembly having a plurality of light emitting diodes (LEDs) and a light guide plate for uniformly guiding light emitted from the LEDs to a liquid crystal substrate is provided. The backlight assembly includes a reflective structure having at least one reflective surface facing the LEDs and tilted at a constant angle. The light emitted from the LEDs is reflected by the reflective surfcae to have the shape of light emitted from a line light source and be incident on the light guide plate. In effect, hot spots degrading screen quality and screen brightness distribution non-uniformity can be prevented.

Description

technical field [0001] The invention relates to a backlight device, more particularly, to a backlight device of a liquid crystal display capable of enhancing the brightness distribution uniformity and picture quality of a picture. Background technique [0002] Recently, various types of flat panel displays that are much lighter and smaller than cathode ray tubes (CRTs) have been developed. Such flat panel displays include liquid crystal displays (LCDs), field emission displays (FEDs), plasma display panels (PDPs), electroluminescence (EL) displays, and the like. In the field of flat panel displays, much research has been devoted to improving display quality and realizing a large screen. [0003] Among flat panel displays, LCDs are non-emitting displays that represent images using a light source such as a lamp. The LCD has advantages of small size, light weight, and low power consumption, and displays information using electrical and optical characteristics of liquid crysta...

Claims

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Application Information

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IPC IPC(8): G02F1/13357G02F1/1335
Inventor 宋永基
Owner BOE HYDIS TECH
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