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Liquid crystal display device and cellular phone provided with the same

A technology of a liquid crystal display device and a liquid crystal display panel, which is applied in the direction of telephone structure, telephone communication, equipment with multiple human-machine interfaces, etc., can solve problems such as difficulty in thinning and large power consumption, and achieve proper recognizability and realization Effects of power saving and structure simplification

Inactive Publication Date: 2007-05-23
ROHM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the liquid crystal display device X includes two light guide plates 93A, 93B, it is difficult to reduce its thickness.
In addition, since two light emitting elements 92A, 92B are included, a large amount of power is consumed for this purpose.
In this way, there is still room for further improvement in the thinning and power saving of the liquid crystal display device X.

Method used

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  • Liquid crystal display device and cellular phone provided with the same
  • Liquid crystal display device and cellular phone provided with the same
  • Liquid crystal display device and cellular phone provided with the same

Examples

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Embodiment Construction

[0023] Next, preferred embodiments of the present invention will be specifically described with reference to the drawings.

[0024] 1 and 2 are diagrams showing an example of a mobile phone according to the present invention. As clearly shown in FIG. 1, this cellular phone A1 includes a main body 11 and a cover 12, and is configured as a so-called foldable cellular phone.

[0025] The main body portion 11 includes a plurality of operation keys 11a on the front. A rechargeable battery (not shown) and the like are provided on the back surface of the main body portion 11 .

[0026] The cover portion 12 is rotatably connected to the main body portion 11 via the shaft portion 13 . By opening and closing the cover portion 12, the mobile phone A1 can be used in an open state or a closed state. A first display surface 14A is provided on a surface of the lid portion 12 that faces the front of the main body portion 11 in the closed state (hereinafter referred to as “inner surface”). ...

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Abstract

A liquid crystal display device (B1) is provided with a first liquid crystal display panel (20A) forming a first display surface (14A), a second liquid crystal display panel (20B) forming a second display surface (14B) facing a side opposite to the first display surface (14A), and a light guide plate (30) having a light entering part (32) which extends to a light projecting part (31) sandwiched between the first and the second liquid crystal display panels (20A, 20B) and to the light projecting part (31) and takes outside light (L) into the light projecting part (31). The first liquid crystal display panel (20A) is illuminated with the outside light (L) which passed through the second display panel (20B) and the light projecting part (31) of the light guide plate (30), and the second liquid crystal display panel (20B) is illuminated with the outside light (L) which enters from a light entering plane (32a) of the light guide plate (30) and is introduced to the second liquid crystal display panel (20B) by the light projecting part (31).

Description

technical field [0001] The present invention relates to a liquid crystal display device and a mobile phone equipped with the same. Background technique [0002] For mobile phones, high-functionality is developing year by year, and as one method, a cover part connected to the main body in a rotatable manner, and a cover part including two display surfaces on the inner surface and the outer surface of the cover part are included. Portable telephones are relatively popular. As a liquid crystal display device used in such a so-called foldable cellular phone, there is a device shown in FIG. 6 . The liquid crystal display device X includes first and second liquid crystal display panels 91A, 91B, that is, so-called double-sided display. As the lighting unit of the first and second liquid crystal display panels 91A, 91B, two light emitting elements 92A, 92B are included, and light from these light emitting elements 92A, 92B is irradiated onto the first and second liquid crystal di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357G02F1/1335G02F1/1333
CPCH04M1/22G02B6/0018G02B6/0055G02B6/0046G02B6/0038H04M1/0214G02F2001/133342H04M2250/16G02B6/0063G02F1/133342G02F1/1333G02F1/1335G02F1/1347H04B1/40
Inventor 渡边俊夫笠嵨康史
Owner ROHM CO LTD
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