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Reflective plate and method for manufacturing the same and backlight unit and liquid crystal display device having the same

A technology of backlight unit and manufacturing method, which is applied in the direction of optical components, optics, instruments, etc., and can solve problems such as screen light leakage and poor heat dissipation efficiency of the backlight unit

Inactive Publication Date: 2007-03-07
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0029] Because the backlight unit has a reflective film and a lampshade formed of the reflective film and aluminum, although the heat from the lamp is dissipated to the bottom cover through the lampshade, the heat dissipation efficiency of the backlight unit is poor
[0030] In addition, the deformation of the optical sheet and the large viewing angle polarizer causes light leakage at the upper and lower corners of the screen

Method used

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  • Reflective plate and method for manufacturing the same and backlight unit and liquid crystal display device having the same
  • Reflective plate and method for manufacturing the same and backlight unit and liquid crystal display device having the same
  • Reflective plate and method for manufacturing the same and backlight unit and liquid crystal display device having the same

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Embodiment Construction

[0047] Preferred embodiments of the present invention will now be described in detail, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0048] 5A to 5C respectively show cross-sectional views of reflective plates according to preferred embodiments of the present invention.

[0049] Referring to FIG. 5A , the reflective plate 500 includes a reflective material 520 on a material 510 with high thermal conductivity.

[0050] The high thermal conductivity material 510 is in the form of flakes, plates or powders, and is at least one of graphite, aluminum, copper, carbon nanotube (CNT), and AlSiC.

[0051] Reflective material 520 is coated with a coating of dispersed material, and is Ag, Al 2 o 3 、TiO 2 , Al, PET (polyester), and at least one of optical fibers.

[0052] Besides, a shielding layer may be disposed under the reflective material 520...

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Abstract

The present invention relates to a reflective plate which effectively disperses the heat of the lamp to the outside of the liquid display panel to improve the quality, a method for manufacturing the same and a backlight unit with the same. The reflective plate comprises a graphite, aluminum, copper, CNT in a film shape, in a plate shape or in a power shape, a thermal conduction material for ALSiC, and the reflecting materials, such as Ag, Al2O3, TiO2, Al, PET and the optical fiber.

Description

[0001] This application claims to be entitled to the application number P2006-003190 filed on January 11, 2006, the application number P2005-080231 filed on August 30, 2005, and the application number P2006-009638 filed on February 1, 2006 rights, the entire contents of which are hereby incorporated by reference. technical field [0002] The present invention relates to a liquid crystal display device, in particular to a reflective plate for ensuring temperature uniformity, a method for manufacturing the reflective plate, a backlight unit and an LCD device having the reflective plate. Background technique [0003] Generally, a liquid crystal display device is provided with a liquid crystal display module, a driving circuit for driving the liquid crystal display module, and a case. [0004] The liquid crystal display module is provided with a liquid crystal display panel having a matrix of liquid crystal cells in which liquid crystal is injected between two glass substrates b...

Claims

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Application Information

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IPC IPC(8): G02F1/1335G02B1/00
Inventor 张命期金杞彬金泰佑
Owner LG DISPLAY CO LTD
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