Method for driving lamps, driving circuit for performing the same and liquid crystal display device having the same

A driving circuit and electrical connection technology, which is applied in the field of liquid crystal display devices, can solve problems such as turning off lights, and achieve the effect of reducing lighting defects

Inactive Publication Date: 2008-10-29
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, even if the LCD unit does not have any particular problem, the lamp may still turn off due to a drop in the inverter input voltage

Method used

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  • Method for driving lamps, driving circuit for performing the same and liquid crystal display device having the same
  • Method for driving lamps, driving circuit for performing the same and liquid crystal display device having the same
  • Method for driving lamps, driving circuit for performing the same and liquid crystal display device having the same

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Embodiment Construction

[0022] The invention will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. The size or relative sizes of layers and regions in the drawings are exaggerated for clarity.

[0023] It will be understood that when an element / layer is referred to as being "on," "connected to," or "coupled" to another element / layer, it means that it is directly placed on the other element / layer. An element / layer / on, connected or coupled to another element / layer / or there may also be intervening elements or layers. In contrast, when an element is referred to as being "directly placed" on / "directly connected to" or...

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Abstract

The present invention relates to method for driving lamps, driving circuit for performing the same and liquid crystal display device having the same. The lamp driving circuit includes a power-generating section, a distribution sensing section and a feedback control section. The power-generating section generates a lamp driving power to drive a plurality of lamps. The distribution sensing section divides the lamp driving power to the plurality of lamps. The distribution sensing section senses the lamp driving power to generate a feedback signal. The feedback control section checks whether or not the plurality of lamps is lit. The feedback control section blocks the feedback signal from being reflected in the lamp driving power before the plurality of lamps is lit.

Description

technical field [0001] The present invention relates to a method of driving a lamp, a driving circuit applying the method, and a liquid crystal display device ("LCD") having the driving circuit. More particularly, the present invention relates to a lamp driving method capable of preventing lighting defects of the lamp, a driving circuit to which the driving method is applied, and a liquid crystal display device having the driving circuit. Background technique [0002] In general, LCD devices have features such as light weight, low power consumption, and low driving power compared with other types of display devices, and thus LCD devices are mainly used in monitors, notebook computers, cellular phones, and the like. The LCD device has an LCD panel that displays images using light transmittance of liquid crystal molecules, and a backlight assembly located below the LCD panel to provide light thereto. [0003] The backlight unit includes a lamp, such as a cold cathode fluoresc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B41/298G09G3/36G05F1/66G02F1/13357G02F1/1335
CPCG09G3/3406H05B41/2824G09G2330/04G02F1/133G09G3/36
Inventor 黄义栋严在殷林必男
Owner SAMSUNG ELECTRONICS CO LTD
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