Backlight unit and liquid crystal display device having the same
A technology of liquid crystal display and backlight source, applied in the direction of light source, electric light source, electric light source, etc., can solve the problems of brightness difference, deviation of inverter characteristics, and discomfort of liquid crystal display.
Inactive Publication Date: 2005-02-02
SAMSUNG ELECTRONICS CO LTD
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[0011] However, this method has a problem in that a difference in brightness is generated between the upper and lower lamp groups due to deviations in the characteristics of the inverters, and as a result this phenomenon causes discomfort to the eyes of the liquid crystal display.
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[0027] Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
[0028] figure 1 is a block diagram illustrating a liquid crystal display according to an embodiment of the present invention.
[0029] Such as figure 1 As shown, a liquid crystal display according to an embodiment of the present invention includes a liquid crystal assembly comprising a gate drive unit 100, a data drive unit 200, and a liquid crystal panel 300; a lamp unit 400; and an inverter circuit (inverter circuit) for driving the lamp unit 400 ) unit 500.
[0030] The gate driving unit 100 receives a gate clock synchronization signal and a gate-on enable signal from a timing controller (not shown), and sequentially applies a gate-on signal synchronized with the two signals. to the gate line of the liquid crystal panel 300 .
[0031] The data driving unit 200 is driven according to a signal output from a timing controller (not shown), an...
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A backlight unit and an LCD comprising the same. The backlight unit comprises a lamp and an inverter circuit unit. The lamp unit includes first and second lamp groups and first to fourth electrode connecting means. Here, the first and second lamp groups are constructed in such a manner that a plurality of lamps are allocated into two groups. The first lamp group is connected to the first and third electrode connecting means, while the second lamp group is connected to the second and fourth electrode connecting means. The respective lamps constituting the first and second lamp groups are alternately disposed at a predetermined interval. The inverter circuit unit includes first and second inverters. The first inverter applies an AC voltage for driving the first lamp group to the first and third electrode connecting means, and the second inverter applies an AC voltage for driving the second lamp group to the second and fourth electrode connecting means. Thus, the problem of the prior art wherein luminance difference occurs between lamp blocks can be solved by alternately disposing the respective lamps constituting the first and second lamp groups.
Description
[0001] This application claims priority from Korean Patent Application No. 10-2003-0037228 filed with the Korean Intellectual Property Office on June 10, 2003, the disclosures of which are incorporated herein by reference in their entirety. technical field [0002] The invention relates to a back light source unit and a liquid crystal display with the back light source unit. Background technique [0003] In general, a liquid crystal display (LCD) includes a liquid crystal panel, an inverter for driving the liquid crystal panel, a backlight unit, an inverter for driving the backlight unit, and the like. [0004] Because the liquid crystal panel itself of the liquid crystal display is a non-luminous body, it cannot be used in a dark place (dark). Therefore, a variety of lamps are used as a backlight unit that uniformly radiates light to the entire liquid crystal panel behind the liquid crystal panel. [0005] The backlight unit is classified into a direct type backlight unit ...
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IPC IPC(8): F21S2/00F21Y103/00G01D11/28G02F1/13357G02F1/1343G09G3/36H05B41/00H05B41/24H05B41/282
CPCG02F1/133604H05B41/282G02F2001/133612Y02B20/183H05B41/00G02F1/133612Y02B20/00G02F1/1335
Inventor 文胜焕
Owner SAMSUNG ELECTRONICS CO LTD