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Back light source

A technology of backlight source and light guide component, which is applied in the field of backlight source and can solve the problem that the thickness cannot be further reduced.

Inactive Publication Date: 2008-04-09
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these technologies have effectively reduced the thickness of the backlight, they can only reduce the thickness from the original 50-60mm to 30-40mm, and cannot further reduce the thickness

Method used

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Embodiment Construction

[0023] The backlight in the embodiment of the present invention adopts LED light source, and the mixed light part is divided into several units. Each unit adopts a similar side-light backlight structure, that is, adopts side-light light guide plate technology, and places the The light emitted by the light source is mixed through the light guide plate. Adopting this solution can not only reduce the thickness of the backlight source to the same level as that of the side-light type, but also ensure the high brightness similar to that of the direct-type backlight.

[0024] Each optical unit includes a light guide plate and a light source placed on its side. The light guide plate can be made of materials such as polymethyl methacrylate (PMMA) or polycarbonate (PC), and is made into shapes such as regular square prisms or square prisms with rectangular bottoms by the commonly used injection molding method. Since the shape of the optical unit is mainly determined by the light guide ...

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PUM

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Abstract

The invention relates to a backlight source, which comprises an optical film group and a reflective panel, wherein, a plurality of optical elements are arranged between the optical film group and the reflective panel; the optical element comprises a light conductive component and at least one LED arranged on the side of the light conductive component. The proposal adopts the disparting side light backlight structure, the LED is arranged on the side of the light conductive component, the light emitted by the LED can be diffused through a very thin light conductive component, even distribution light can be got at the light output surface of the light conductive component, so the whole thickness of the backlight source is reduced to the comparative thickness of the side light backlight source, at the same time the brightness of the similar down backlight source is guaranteed.

Description

technical field [0001] The invention relates to a display technology, in particular to a backlight source in the display. Background technique [0002] With the rapid development of display technology, liquid crystal display (LCD) has become the mainstream in the field of flat panel display. The LCD realizes the display by driving the liquid crystal between two pieces of conductive glass through the electric field. Since the liquid crystal itself does not emit light, the LCD needs to realize the transmissive or reflective display through an external light source. Most of the existing LCDs are transmissive, and for these transmissive LCDs, the backlight source is an indispensable component. [0003] LCD backlight is usually composed of light sources such as cold cathode fluorescent tubes or LEDs, light source reflectors, light guide plates, reflectors, optical film groups, etc. Among them, the optical film group is composed of prism film and diffusion film / plate. [0004] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357G02B6/00G02B1/04G02F1/1335
Inventor 刘敬伟万丽芳王庆江王刚邵喜斌
Owner BOE TECH GRP CO LTD
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