Photoluminescence LED display device and manufacturing method thereof

Abstract

The invention provides a photoluminescence LED display device and a manufacturing method thereof. The display device comprises a light emitting diode array and a display panel which is arranged at oneside of the light emitting diode array, and the display panel comprises a light-transmitting base plate and a photoluminescence layer structure. The photoluminescence layer structure is supported bythe light-transmitting base plate, and the light-transmitting base comprises comprises a red light penetrating area, a green light penetrating area and a blue light penetrating area; the photoluminescence layer structure comprises a red photoluminescence layer and a green photoluminescence layer, wherein the red photoluminescence layer is arranged on the green photoluminescence layer. Therefore, by arranging the photoluminescence layers in a vertical stacked mode, precise pixel positioning of the photoluminescence layer structure can be avoided, so that the display device can be manufactured more easily; and meanwhile, the display device is also relatively excellent in light energy utilization rate and relatively large in display view angle.

Description

technical field [0001] The present invention relates to a display device and a manufacturing method thereof, in particular to a photoluminescent LED 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....

AI Technical Summary

Problems solved by technology

[0007] 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 57 microns respectively. 19 microns, 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; for example, the green fluorescent material will 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

[0008] 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.

[0009] In summary, the display device disclosed in the previous case still has various deficiencies and needs to be improved by better solutions

Images