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Liquid crystal display device

A technology of a liquid crystal display device and a liquid crystal display panel, which is applied in the field of front-lit liquid crystal display devices, and can solve the problems of decreased brightness, worsened brightness consistency, and increased cost of liquid crystal display devices, etc.

Inactive Publication Date: 2003-11-05
BEIHAI HKC OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the light utilization rate decreases, and the luminance decreases, and the luminance uniformity deteriorates
[0014] Also, in conventional constructions, it was determined that the double-sided tape with the sticky material layer 109 sticking out would be detrimental to the effect of the bright band
Therefore, the yield of the double-sided tape becomes low, and the cost of the liquid crystal display device increases

Method used

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  • Liquid crystal display device
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Examples

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Effect test

no. 1 example

[0048] First, refer to figure 2 , Figure 3A and Figure 3B A liquid crystal display device according to the frontlight method of the first embodiment of the present invention is described below. figure 2 is a plan view showing the structure of a display portion of a liquid crystal display device of a frontlight method according to a first embodiment of the present invention. same, Figure 3A is shown along figure 2 A cross-sectional view of the end of the display area of ​​the liquid crystal display device on line A-A, and Figure 3B yes Figure 3A An expanded view of the portion of the display area surrounded by a circle in .

[0049] The liquid crystal display device in the first embodiment mainly includes a cabinet 1 , a liquid crystal display panel 2 , a light guide plate 3 , a light source 4 and a space maintaining member 5 . In the liquid crystal display panel 2, liquid crystals are placed between opposing substrates. A light source 4 is provided in the side ...

no. 3 example

[0064] Next, we will refer to Figure 5 , Figure 6A , Figure 6B , Figure 7A and Figure 7B A liquid crystal display device according to the frontlight method of the third embodiment of the present invention will be described. Figure 5 is a plan view showing the structure of the display portion of the liquid crystal display device of the frontlight method in the third embodiment. Figure 6A and Figure 7A is shown along Figure 5 Line B-B in shows a cross-sectional view near the end portion of the region. Figure 6B and Figure 7B yes Figure 6A and Figure 7A The expanded view of the circled part in the middle.

[0065] In a second embodiment, light absorbing material is distributed and mixed in a layer of adhesive material. However, instead of using a light absorbing adhesive material, a layer of light shielding material may be arranged to cover the area of ​​the light guide plate 3 corresponding to the space maintaining member 5 . The light shielding material...

no. 4 example

[0068] Next, we will refer to Figure 8A and Figure 8B A liquid crystal display device according to a frontlight method according to a fourth embodiment of the present invention will be described. Figure 8A is a cross-sectional view showing the structure of the end of the display region of the liquid crystal display device of the frontlight method in the first to third embodiments. Figure 8B is a cross-sectional view showing the structure of the end of the display region of the liquid crystal display device of the front light method in the fourth embodiment.

[0069] In the first to third embodiments, a structure in which an adhesive material or a light shielding material which itself has a refractive index and contains a compound is provided between the space maintaining member 5 and the light guide plate 3 is used. However, in addition to the light incident directly from the light source 4, there is light reflected approximately vertically from the surface of the liquid...

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Abstract

A front light liquid crystal display device comprises a liquid crystal display panel, a light guide plate, a light source optically connected to the light guide plate and irradiating light to the light guide plate, and supports and fixes the liquid crystal display panel in an area outside the display area of ​​the liquid crystal display panel The member is held in a space with a predetermined gap with the light guide plate. The space maintaining member has a base member and an adhesive material layer on at least one side of the base member. The layer of adhesive material has a lower refractive index than the light guide plate.

Description

technical field [0001] The present invention relates to a liquid crystal display device, and more particularly, to a frontlight type liquid crystal display device. Background technique [0002] Liquid crystal display devices are widely used as monitors of office automation equipment due to their small size, thin shape, and low power consumption. This liquid crystal display device includes a liquid crystal display panel, an optical part and a box. In a liquid crystal display panel, liquid crystals are placed between opposing substrates. The orientation of the liquid crystal molecules is controlled by an electric field generated according to a voltage applied between electrodes provided for the substrate or one of the substrates. The optical part includes optical components such as a light source, a light guide plate, and a light spreading plate. The cabinet supports the liquid crystal display panel and the optical part. [0003] Also, for reasons of thin shape and light w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/00F21V8/00G02F1/1333G02F1/13357
CPCG02B6/0038G02B6/0088G02F1/133615G02F1/133616G02F1/1335
Inventor 小野伸一郎福吉弘和
Owner BEIHAI HKC OPTOELECTRONICS TECH CO LTD
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