Liquid crystal display device

A technology of liquid crystal display devices and liquid crystal panels, applied in optics, instruments, discharge lamps, etc., can solve the problems of poor image realism, color distortion of liquid crystal display device images, etc., to reduce power consumption, improve contrast, and restore or approximate Effect

Inactive Publication Date: 2012-08-22
TCL CORPORATION
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Problems solved by technology

However, the spectral line bandwidth of the backlight CCFL of the liquid crystal display device is much lower than the color mixing curve of the three primary colors of the image. This kind of spectral line color with a narrow half-peak width to simulate a spectral line color with a wide half-peak width will cause liquid crystal display The distortion of the image color of the device often presents a color that is too green or too red. Although the color gamut of the backlight color of the liquid crystal display device is very wide, the realism of the image is poor, and it is more suitable for people to adapt to the natural light of continuous spectrum There is a big difference in the environment

Method used

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Embodiment Construction

[0017] There are many combinations when using various phosphors to make CCFL:

[0018] One type applies phosphors of various spectral lines to the inside of the same CCFL lamp tube. The embodiment of the present invention is to coat phosphors of five spectral lines of red, green, blue, blue, and yellow in a CCFL lamp tube. The main peak wavelength of the spectral line of the cyan phosphor is between 470-500nm, and the main peak wavelength of the spectral line of the yellow phosphor is between 550-590nm. The advantage of this method is that it does not change any structure of the existing backlight system.

[0019] The second type divides phosphors of various spectral lines into several groups and coats them in different CCFL lamp tubes to make mixed color lamp tubes. For example, the five spectral lines of red, green, blue, blue and yellow can be divided into two groups for coating. One group is red, green and blue three-color fluorescent powder coated inside a CCFL lamp tube...

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Abstract

The invention belongs to the liquid crystal display field, and provides a liquid crystal display device, comprising a liquid crystal panel and a backlight system. The backlight system comprises a plurality of CCFL lamp tube groups or a plurality of CCFL lamp tubes. Each CCFL group or each CCFL lamp tube sends spectrum curve having at least five main peaks with different spectrums. The main peaks of the five main peak with different spectrums are five spectrums with different colors. The five different colors include light of red, green and blue. The invention increases backlight spectral line width by increasing luminescent sources of other spectral line different from that of red, green and blue light, has backlight source with wide spectrum, thereby showing approximate real color of natural object, to make it comfortable to observe.

Description

technical field [0001] The invention belongs to the display field, in particular to a liquid crystal display device. Background technique [0002] In the natural world where people live, the spectrum of visible light of objects observed by eyes is rich and often continuous. However, for a liquid crystal display device using a common CCFL backlight, the light emitted by the backlight source is discontinuous in several limited spectral bands. The color we see from the LCD TV is the result of mixing the above discontinuous spectral segments. This method is a simplified processing method for complex colors. It can only basically reproduce the original color of the scene. The color of the actual object has a large difference in the spectral composition. figure 1 , figure 2 , image 3 The difference between the reflection spectrum of the natural object of the same color and the display spectrum of the liquid crystal display device is shown respectively. [0003] Most of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357H01J61/00
Inventor 闫晓林付东朱昌昌谢相伟邵诗强
Owner TCL CORPORATION
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