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Back lighting for LCD

一种背后照明、支撑部件的技术，应用在直接型背后照明装置领域，能够解决不能产生均匀放电、发光不均匀等问题

Inactive Publication Date: 2005-03-23
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even if the two sides of the middle part have the same length, it is still impossible to generate a uniform discharge on both sides
Therefore, there is a problem with non-uniform light emission

Method used

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  • Back lighting for LCD
  • Back lighting for LCD
  • Back lighting for LCD

Examples

Experimental program
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Embodiment Construction

[0032] Illustrative embodiments of the invention, examples shown in the accompanying drawings, will now be described in detail. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0033] Figure 4 is a plan view of a backlight device according to a first embodiment of the present invention. Figure 5A to Figure 5C are perspective views illustrating various examples of a backlight device according to the first embodiment of the present invention.

[0034] Such as Figure 4 As shown, the backlight device according to the first embodiment of the present invention includes: a plurality of light-emitting lamps 10, which have electrodes 10b and 10c at both ends of the outer tube 10a; a first frame 20, and the first frame 20 The light emitting lamp 10 is supported. First support members 20 a and second support members 20 b are respectively formed at both ends and the center of the first frame 20 to support the ele...

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Abstract

A back light includes a first case having a plurality of first and second support members, the first support members at ends of the case and the second support member at a center portion of the case and a plurality of luminescent lamps having tubes supported by the first and second support members, having electrodes at both ends of the tubes. The luminescent lamps are arranged alternately at left and right sides of the second support member.

Description

technical field [0001] The present invention relates to a backlighting device, in particular to a direct type backlighting device for liquid crystal display (LCD) devices. Background technique [0002] In general, ultra-thin sized flat panel displays having a thickness of several centimeters or less, especially flat panel LCD devices, are widely used in monitors for notebook computers, spaceships, and aircraft. [0003] Since there is no light source in this LCD device itself, it is necessary to provide a backlight at the rear of the liquid crystal panel. Such a backlight is used as a light source. In general, as shown in Figure 1, the LCD device includes: a liquid crystal panel 5 comprising first and second substrates 2 and 4; a backlight 7 behind the liquid crystal panel 5; One or more diffusion sheets 6 between them. [0004] The backlight 7 serving as a light source for the LCD includes a cylindrical light emitting lamp. Backlight devices are classified into a direct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21S2/00F21Y103/00G02F1/13357
CPCG02F1/133608G02F1/133604G02F2001/133613G02F1/133613G02F1/1335
Inventor 林茂宗
Owner LG DISPLAY CO LTD
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