Full-color micro display device and preparation method thereof

Abstract

The invention relates to the technical field of display, and discloses a full-color micro display device and a preparation method thereof. The full-color micro display device comprises light-emitting substrate and a driving substrate, the light-emitting substrate and the driving substrate are bonded, a full-color display array is formed on the light-emitting substrate, and the light-emitting substrates comprises a red light LED light-emitting substrate, a green light LED light-emitting substrate and a blue light LED light-emitting substrate; a red light LED chip pixel and a first polarizer are arranged on the red light LED light-emitting substrate; a green light LED chip pixel and a second polarizer are arranged on the green light LED light-emitting substrate; a blue light LED chip pixel and a third polarizer are arranged on the blue light LED light-emitting substrate; and the polarization directions of the first polarizer, the second polarizer and the third polarizer which are adjacent to each other are perpendicular to each other. The polarizers are arranged over the LED chip pixels with different colors, and the included angle between the polarizers and the LED chip pixels is 90 degrees, so that crosstalk of polarized light emitted by the LED chip pixels with different colors is avoided.

Description

technical field [0001] The present application relates to the field of display technology, and mainly relates to a full-color micro-display device and a preparation method thereof. Background technique [0002] LED (Lighting Emitting Diode, light-emitting diode, referred to as LED) is a solid-state semiconductor device that can convert electrical energy into visible light. Advantages, widely used in display, lighting, signal lights and other fields. [0003] When the size of LED chip pixels is reduced to tens of microns or even several microns, it is called Micro-LED chip pixels. Micro-LED display is an array display technology composed of micron-scale semiconductor light-emitting units, and traditional OLED, LCD Compared with display technology, Micro-LED has the advantages of high brightness, wide color gamut, low energy consumption, fast response time, and high reliability, so it is widely used in wearable devices, augmented reality (AR), virtual reality (VR), visible li...

AI Technical Summary

Problems solved by technology

However, because it is impossible to grow quantum wells that emit three colors of red, green and blue on the same substrate at one time, if LEDs are used to achieve full color, three hybrid bondings are required. If LEDs of each color If the pixel substrate of the chip is optically isolated first and then mixed and bonded, the problem of optical crosstalk cannot be avoided; if it is mixed and bonded first and then isolated, the problem of pixel crosstalk during misalignment cannot be overcome, and the process is difficult

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