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Liquid crystal display device using dual light unit

A technology of a liquid crystal display device and a light unit, which is applied to LCD. It can solve the problems of inability to read the displayed information, the reduction of the brightness level of the reflective LCD, etc.

Inactive Publication Date: 2004-12-01
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the ambient light is insufficient, such as at night, the brightness level of the reflective LCD will decrease, making it impossible to read the displayed information

Method used

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  • Liquid crystal display device using dual light unit
  • Liquid crystal display device using dual light unit
  • Liquid crystal display device using dual light unit

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Embodiment Construction

[0027] Preferred embodiments of the present invention shown in the accompanying drawings will be described in detail below.

[0028] image 3 is a schematic sectional view showing an example of an LCD according to the present invention. exist image 3 Among them, an LCD 300 includes a liquid crystal panel 330 , a first polarizing plate 340 , a second polarizing plate 350 , a first front light unit 310 , a second front light unit 320 , and a partial reflector 360 . A liquid crystal layer 333 is filled between the first substrate 331 and the second substrate 332 to form a liquid crystal panel 330 . In addition, a first polarizing plate 340 and a second polarizing plate 350 are attached on both sides of the liquid crystal panel 330 . For example, the first front light unit 310 is attached to the front side of the liquid crystal panel 330 , and the second front light unit 320 is attached to the back side of the liquid crystal panel 330 . Further, a partial reflector 360 is att...

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Abstract

A dual LCD device includes a liquid crystal panel having a liquid crystal layer interposed between a first substrate and a second substrate, first and second polarizing plates attached to opposing surfaces of the liquid crystal panel, a first front light unit attached to a front side of the liquid crystal panel, and a second front light unit attached to a rear side of the liquid crystal panel, and a partial reflector attached to a front surface of the first front light unit.

Description

technical field [0001] The present invention relates to a liquid crystal display device (LCD), in particular to an LCD with dual light units. Background technique [0002] LCDs are flat panel display devices having a relatively small size, slim profile, and low power consumption. LCDs are therefore widely used in mobile computers such as notebook computers, office automation equipment, and audio / video machines. [0003] LCD displays images by manipulating the light passing through the liquid crystal material by controlling the induced electric field of the liquid crystal material. The LCD itself does not need to emit light, but uses an external light source. This technology differs from other display devices such as electroluminescence (EL), cathode ray tubes (CRT) and light emitting diodes (LEDs), which emit light by themselves. [0004] LCD devices can be roughly divided into two different types: transmissive LCDs and reflective LCDs. A transmissive LCD includes a liqu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V8/00F21Y103/00G02F1/133G02F1/1333G02F1/1335G02F1/13357
CPCG02F2001/133626G02F2001/133616G02F2001/133543G02F2001/133342G02F1/133615G02F1/133555G02F1/133342G02F1/133543G02F1/133616G02F1/133626
Inventor 金庆镇姜勋
Owner LG DISPLAY CO LTD