Micro-LED display module preparation method, display module and display device

Abstract

The invention provides a preparation method of a Micro-LED display module, the display module and a display device, and belongs to the field of LED display. The preparation method of the Micro-LED display module comprises the following steps: obtaining or preparing a Micro-LED array; designing a micro-lens array structure diagram according to the Micro-LED array, and preparing a micro-lens array model according to the micro-lens array structure diagram; obtaining the thickness and the light transmittance of the micro-lens structure, selecting a light-transmitting material, and preparing the micro-lens structure through the micro-lens array model; and the micro lens structure is bonded with the Micro-LED array, so that the Micro-LED display module can be formed. According to the Micro-LED module, the light emitting angles of the LED pixel units are shrunk through the micro lenses, the light emitting collimation is improved, the light crosstalk effect of light emitting of the adjacent LED pixel units is effectively avoided, the light emitting loss of the LED pixel units is reduced, and therefore the light emitting brightness of the Micro-LED module is improved.

Description

technical field [0001] The invention relates to the field of LED displays, in particular to a method for preparing a Micro-LED display module, a display module and a display device. Background technique [0002] Micro-LED is LED (light-emitting diode, light-emitting diode) miniaturization and matrix technology. In simple terms, it is to thin, miniaturize, and array LED backlight, so that the LED pixel unit can be reduced to a few microns to a few microns. Hundreds of microns, and at the same time, each graphic element can be individually addressed and driven to emit light (self-illumination). [0003] With the shrinking of Micro-LED pixels, the ratio of the side wall area to the overall surface area increases, and the side wall light emission occupies a large component, which cannot be ignored. In the Micro display, the influence is relatively large, and it will bring relatively large crosstalk effects: (1) In RGB (red greenblue) three-chip colorization, the light emitted b...

AI Technical Summary

Problems solved by technology

In the Micro display, the influence is relatively large, and it will bring relatively large crosstalk effects: (1) In RGB (red greenblue) three-chip colorization, the light emitted by the Micro-LED pixel unit will crosstalk to adjacent pixels, and the LED of this pixel may be If it is turned off, this will affect the black level of adjacent pixels, because ideally, this pixel is completely turned off and does not emit light, which will affect the contrast and black level of the display; (2) For photoluminescence colorized Micro-LED display In other words, the same pixel unit such as blue Micro-LED light emission may excite the red and green light-emitting materials in the same pixel, reducing the color purity and saturation of the display, etc.

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