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Liquid crystal display apparatus

A technology of liquid crystal display device and liquid crystal display panel, which is applied in static indicators, instruments, coastline protection, etc., can solve the problems of loss of brightness level and reduction of the contrast ratio of conventional LCD devices, etc.

Inactive Publication Date: 2009-03-18
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in the conventional white balance adjustment method based on the cutoff values ​​of R, G, B signals and gamma correction, the white balance is adjusted by changing the contrast and brightness of the video signal, thereby reducing the contrast ratio of conventional LCD devices
Additionally, white balance is adjusted based on the maximum and minimum brightness of the individual R, G, B signals, thereby losing representable brightness levels (i.e. brightness)

Method used

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  • Liquid crystal display apparatus
  • Liquid crystal display apparatus
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Examples

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Embodiment Construction

[0022] Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals represent like elements throughout. The embodiments are described below in order to explain the present invention by referring to the figures.

[0023] Such as figure 1 As shown, the LCD device according to the embodiment of the present invention includes: a signal input unit 10, a signal processor 20, an LCD panel 40, a panel driver 30, a backlight unit 50 and a controller 60 for controlling the above elements.

[0024] The LCD panel 40 includes a first substrate on which switching devices and pixel electrodes are formed; a second substrate on which R, G, and B color filters are formed; and liquid crystals interposed between the first and second substrates. A signal from the panel driver is sent to the switching device through a source printed circuit board (PCB) and a gate PCB in th...

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Abstract

An LCD apparatus with an LCD panel displaying a picture thereon, including a backlight array in which a plurality of light emitting devices illuminating the LCD panel with a plurality of colors is arranged to have a predetermined pattern. A backlight driver drives each light emitting device to emit light and to adjust light intensity; and a controller controls the backlight driver to adjust a while balance of a picture displayed on the LCD panel. With this configuration, an LCD apparatus is provided, in which a white balance is adjusted without making a loss in a representable brightness level, i.e., brightness, and lowering a contrast ratio. Also included is an LCD apparatus, in which a white balance is adjusted according to formats of an input video signal.

Description

technical field [0001] Apparatus consistent with the present invention relates to a liquid crystal display (LCD) apparatus, and more particularly, to an LCD apparatus including and controlling a backlight array to adjust white balance on which an LCD panel is illuminated with a plurality of colors A plurality of light emitting devices are arranged in a predetermined pattern. Background technique [0002] LCD devices use liquid crystal cells. When a voltage is applied to the liquid crystal cells, the inherent molecular arrangement inside the liquid crystal cells will rearrange. The rearrangement of the molecules results in optical properties such as birefringence, line light, dichroism, light scattering, etc., This modulates the light and displays an image. [0003] Compared with other display devices such as Plasma Display Panels (PDPs), Field Emission Displays (FEDs), etc., LCD devices cannot emit light by themselves but instead adjust light passing through the LCD panel, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/133G09G3/34G09G3/36
CPCG09G3/3413G09G3/3426G09G2320/0606G09G2320/0666G09G2320/0633E02B3/14E02D29/0266A01G9/025E02D2600/20
Inventor 金锡福金炫奭
Owner SAMSUNG ELECTRONICS CO LTD