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Lighting device, liquid crystal display device, mobile terminal device and its controlling method

A technology of lighting equipment and drive control, which is applied to lighting devices, static indicators, telephone structures, etc., can solve the problems of uneven brightness and difficulty in providing luminous intensity of light-emitting areas in detail, and achieve the effect of reducing unevenness

Active Publication Date: 2006-06-21
NEC LCD TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it does not take measures for the unevenness of luminance in each divided light-emitting area, making it difficult to provide the luminous intensity of each light-emitting area in detail

Method used

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  • Lighting device, liquid crystal display device, mobile terminal device and its controlling method
  • Lighting device, liquid crystal display device, mobile terminal device and its controlling method
  • Lighting device, liquid crystal display device, mobile terminal device and its controlling method

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Embodiment Construction

[0047] Next, embodiments of the present invention will be specifically described with reference to the drawings.

[0048] First, a liquid crystal display device according to a first exemplary embodiment of the present invention will be specifically described below with reference to the drawings.

[0049] refer to figure 2 , the liquid crystal display device 1 includes: a liquid crystal display part 11, which is composed of a plurality of liquid crystal display devices; an LED part 12, which has a light emitting element for the backlight of the liquid crystal display device; an optical sensor 13; and an illumination device 14, which responds to the optical The detection result of the sensor 13 is used to control the backlight.

[0050] In other words, the liquid crystal display device 1 has the LED part 12 including a plurality of LED1 and LED2 as light emitting elements of the backlight to transmit the light of the light emitting elements arranged on the rear surface of the l...

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PUM

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Abstract

A lighting device of backlight type that transmits light of a plurality of light emitting elements from a display section includes a plurality of driving sections that drive the plurality of light emitting elements; and drive switching section, provided between the plurality of driving sections and the plurality of light emitting elements, for switching the drive of the plurality of light emitting elements alternately at every fixed cycle.

Description

technical field [0001] The present invention relates to a lighting device, a liquid crystal display device, a mobile terminal device and a control method thereof, and in particular to a lighting device, a liquid crystal display device, a mobile terminal device and a control method thereof capable of improving brightness unevenness when a light-emitting element serving as a backlight is turned on method. Background technique [0002] Since the liquid crystal display device itself is not a self-luminous display device, the liquid crystal display device requires an external light source. A backlight in a lighting device generally refers to a light source located on the rear surface of a liquid crystal display device. In particular, in a transmissive liquid crystal display device, a light source is placed on the rear surface. For this reason, this light source is called a backlight. [0003] Conventionally, a cold cathode ray tube is mainly used as a backlight light source. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B41/36G02F1/133H04M1/02H05B41/295
CPCG09G3/342G09G2320/0233G09G2320/064G09G2360/145
Inventor 西垣荣太郎
Owner NEC LCD TECH CORP