Plate of guiding light, backlight module, and double-faced liquid crystal display device

A liquid crystal display device and liquid crystal display technology, which are applied in the field of light guide plates, can solve problems such as unevenness and dimming brightness, and achieve the effects of suppressing uneven brightness, improving uniformity, and increasing light reflectivity.

Inactive Publication Date: 2008-07-23
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, on the image displayed on the main liquid crystal display 11, so-called brightness unevenness occurs in which the area facing the sub liquid crystal display 12 becomes darker.

Method used

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  • Plate of guiding light, backlight module, and double-faced liquid crystal display device
  • Plate of guiding light, backlight module, and double-faced liquid crystal display device
  • Plate of guiding light, backlight module, and double-faced liquid crystal display device

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Embodiment Construction

[0019] The light guide plate of the present invention, the backlight module and the liquid crystal display device using the light guide plate will be further described in detail below with reference to the drawings and multiple embodiments.

[0020] see figure 2 , the first embodiment of the present invention provides a double-sided liquid crystal display 20 . This double-sided liquid crystal display 20 comprises a main liquid crystal display 21; A secondary liquid crystal display 22 whose area is smaller than this main liquid crystal display 21; One is arranged on the backlight between this main liquid crystal display 21 and this secondary liquid crystal display 22 module 25 , the backlight module includes a light guide plate 24 and a light emitting diode point light source 23 . The light guide plate 24 includes: a light incident surface 243 close to the light emitting diode point light source 23, a first light exit surface 241 connected to the light incident surface 243, t...

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Abstract

A light guide plate consists of a light incoming surface, the first light outgoing surface and the second light outgoing surface including a subregion and a master region surrounding said subregion as well as lattice point formed on the second light outgoing surface. It is featured as making density of lattice point in subregion be greater that density of lattice point in adjacent master region along parallel direction of light incoming surface. The back light module prepared by said guide plate and double-face liquid crystal display unit prepared by said guide plate are both disclosed.

Description

【Technical field】 [0001] The invention relates to a light guide plate, a backlight module using the light guide plate, and a double-sided liquid crystal display device using the backlight module. 【Background technique】 [0002] Along with the miniaturization of portable mobile phones or portable information terminals equipped with liquid crystal displays, portable mobile phones and portable information terminals designed to be folded so that a keypad portion and a liquid crystal display are superposed together during standby have become be commoditized. In addition, in recent years, a sub-liquid crystal display product that can display information even when the foldable portable mobile phone or portable information terminal is in a standby state after folding has been commercialized on the back of the above-mentioned liquid crystal display. . [0003] As a liquid crystal display device suitable for such a portable mobile phone or a portable information terminal equipped wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1335G02F1/133G02B5/02
CPCG02B6/0043G02F2001/133342G02B6/0061G02F1/133615G02B6/0016G02F1/133342
Inventor 廖明毅
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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