Photoluminescence display device and manufacturing method thereof

Abstract

The invention provides a photoluminescence display device and a manufacturing method thereof. The photoluminescence display device includes a blue light source and a display panel arranged on one side of the blue light source; the display panel includes a light-transmitting substrate, a filtering layer structure, and a photoluminescence layer structure; the filtering layer structure is formed on the light-transmitting substrate, and includes a red region, a green region and a blue region which are adjacent to each other; and the photoluminescence layer structure is arranged on the filtering layer structure and faces the blue light source, and includes a red photoluminescence layer and a green photoluminescence layer, wherein the red photoluminescence layer is arranged on the green photoluminescence layer and faces the blue light source. Accordingly, the display device has good light energy utilization rate and a larger display visual angle; and the photoluminescence layer structure can avoid accurate positioning of pixels, and then the display device is easy to manufacture.

Description

technical field [0001] The present invention relates to a display device and a manufacturing method thereof, in particular to a photoluminescent display device and a manufacturing method thereof. Background technique [0002] A traditional liquid crystal display device includes a backlight module and a liquid crystal panel, wherein the liquid crystal panel includes a thin film transistor control circuit layer, a liquid crystal layer, a polarizer, a color filter and other components, and the backlight module can produce A white light is sent to the liquid crystal panel, and then the white light can reach the color filter after passing through the liquid crystal layer controlled by the thin film transistor. Such as figure 1 As shown, the color filter 90 includes a red pixel area 91, a green pixel area 92 and a blue pixel area 93, which respectively allow light R with a red spectrum, light G with a green spectrum, and light with a blue spectrum in the white light spectrum. Ra...

AI Technical Summary

Problems solved by technology

[0006] However, in mobile display devices, the pixels have tiny sizes. Taking a smartphone as an example, when it is equipped with a 5-inch Full HD (High Definition) display device, the length and width of each pixel are 57 microns and 19 microns respectively. Micron, these red and green fluorescent materials that are small in size and arranged side by side require a very high alignment accuracy during manufacture, so there is considerable manufacturing difficulty; The red fluorescent material covering the side is partially accumulated on it, making the process difficult to control and resulting in uneven thickness of the fluorescent material

[0007] On the other hand, because the red fluorescent material and the green fluorescent material generally have different light conversion efficiencies, the thicknesses of the red fluorescent material and the green fluorescent material required for the photoluminescent layer are also different; The fluorescent materials have good thickness consistency, which is quite difficult to control in manufacturing

Therefore, problems such as poor alignment, different thickness requirements, and difficulty in thickness control have greatly increased the difficulty of mass-producing red and green fluorescent materials arranged side by side.

[0008] In summary, the display device disclosed in the previous case still has various deficiencies and needs to be improved by better solutions

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