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Light source assembly used for backlight module, backlight module and liquid crystal displayer

A technology for backlight modules and light source components, applied in instruments, optics, nonlinear optics, etc., can solve the problems of increasing color resist film thickness, aggravating dark-state light leakage, increasing costs, etc., and achieves the improvement of color gamut and color purity. Effect

Inactive Publication Date: 2015-12-23
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method of increasing the film thickness will reduce the general performance of the LCD panel and increase the cost
Moreover, since the color filter substrate has the function of depolarizing light, increasing the thickness of the color resist film will increase the light leakage in the dark state, resulting in a decrease in contrast

Method used

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  • Light source assembly used for backlight module, backlight module and liquid crystal displayer
  • Light source assembly used for backlight module, backlight module and liquid crystal displayer
  • Light source assembly used for backlight module, backlight module and liquid crystal displayer

Examples

Experimental program
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Embodiment 1

[0029] This embodiment provides a light source assembly for a backlight module, such as figure 2 As shown, the light source assembly includes a substrate 1 and an LED chip 2 packaged on the substrate 1, the LED chip 2 is provided with an optical conversion part 3, and the optical conversion part 3 is used to convert the light emitted by the LED chip 2 Monochromatic light is converted to white light. Specifically, the LED chip 2 may be a blue LED chip or an ultraviolet LED chip. The optical conversion part 3 includes a glass box body 3a and fluorescent powder or phosphor powder 3b packaged in the glass box body 3a.

[0030] Wherein, the fluorescent powder or phosphorescent powder 3b can be fluorescent powder or phosphorescent powder of quantum dot material, such as CdS, ZnS, PbS, CdSe, ZnSe, PbSe, CdTe, CdTeSe, InP, AgInS, CuInS, CuInSe one or several. The phosphor or phosphor powder can also be traditional phosphor powder or phosphor powder, such as nitride, oxynitride, si...

Embodiment 2

[0042] This embodiment provides a side-type backlight module, such as Figure 5 As shown, the backlight module includes a backplane 10 and a reflective sheet 20, a light guide plate 30, and an optical film set 40 sequentially arranged on the backplane 10. The backlight module also includes a light source assembly 50, and the light source assembly 50 is arranged on the guide Between the side of the light board 30 and the side wall of the backplane 10 . Wherein, the light source assembly 50 adopts the light source assembly provided in the first embodiment. refer to Figure 5 and combine figure 2 The light emitted by the LED chip 2 sequentially passes through the optical conversion part 3 and the filter film set 4 and then enters the light guide plate 30 , and then is emitted from the optical film set 40 above the light guide plate 30 to be provided to the liquid crystal panel.

[0043] This embodiment also provides a direct type backlight module, such as Figure 6 As shown,...

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Abstract

The invention discloses a light source assembly used for a backlight module. The light source assembly comprises a substrate and an LED chip packaged on the substrate. An optical conversion part is arranged on the LED chip and used for converting monochromatic light emitted by the LED chip into white light. The light source assembly is characterized in that a filtering membrane set is arranged on the optical conversion part and used for shrinking wavelength ranges corresponding to red light, green light and blue light in the white light. The invention further discloses the backlight module comprising the light source assembly and a liquid crystal displayer. The light source assembly can shrink the wavelength ranges corresponding to the red light, green light and blue light in the generated white light, without changing band-pass wavelength ranges of all color resistors in a colorful filtering substrate, the color purity of all pixels can be improved, and then the color gamut is increased.

Description

technical field [0001] The invention relates to the technical field of displays, in particular to a light source assembly used in a backlight module, and also to a backlight module and a liquid crystal display including the light source assembly. Background technique [0002] Liquid crystal display (Liquid Crystal Display, LCD) is a flat and ultra-thin display device, which consists of a certain number of color or black and white pixels, and is placed in front of a light source or a reflective surface. Liquid crystal displays have low power consumption, high image quality, small size, and light weight, so they are favored by everyone and become the mainstream of displays. Most of the liquid crystal displays on the market are backlight liquid crystal displays, including a liquid crystal panel and a backlight module. The liquid crystal panel and the backlight module are arranged opposite to each other. [0003] A liquid crystal panel usually consists of a thin film transistor...

Claims

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Application Information

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IPC IPC(8): G02F1/13357
CPCG02F1/133603G02F1/133606G02F1/133609G02F1/133607
Inventor 樊勇
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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