Surface source and backlight module employing same

Abstract

Disclosed are a surface source and a backlight module employing same. The surface source comprises a plurality of LED sealed structures, which are arranged in a first array, each LED sealed structure comprises first, second and third color luminous portions, wherein the first color luminous portion comprises a first light exit axis, the second color luminous portion comprises a second light exit axis, and the third color luminous portion comprises a third light exit axis. The second color luminous portion is adjacent to the first color luminous portion, and the third color luminous portion is adjacent to the first and second color luminous portions. In the first array, the first light exit axes of the adjacent LED sealed structures in rows and columns have a 180 degree difference, the second light exit axes are have a 180 degree difference and the light exit axes also have a 180 degree difference. The invention improves color shift, and further provides uniform chromaticity. The backlight module employing the surface source provides lights with uniform chromaticity.

Description

technical field [0001] The invention relates to a surface light source, in particular to a surface light source with uniform light mixing and a backlight module using the same. Background technique [0002] The backlight module is mainly used as a light source provider for the liquid crystal display. Since the liquid crystal itself is not luminescent, the light source needs to be provided by the backlight module. Backlight modules can be divided into side-light type and direct-light type according to the position of the light source. The former is mainly used in small and medium-sized panels such as monitors and notebook computers, and the latter is mainly used in large panels such as LCD TVs. In traditional large backlight modules, cold cathode fluorescent lamps (Cold Cathode Fluorescent Lamp, CCFL) are mostly used as light sources. However, in recent years, due to the rising awareness of environmental protection, light emitting diodes (LEDs), which have the advantages of ...

AI Technical Summary

Problems solved by technology

However, since the LED light source 101 is affected by the packaging structure, the light 103 provided is mostly axial light, so it is easy to cause uneven light mixing of red, green and blue when used in the backlight module.

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