Micro LED array display device

Abstract

Disclosed is a micro LED array display device. The disclosed micro LED array display device comprises: a micro LED panel including a plurality of micro LED pixels; a CMOS backplane including a plurality of CMOS cells corresponding to the respective micro LED pixels so as to individually drive each of the micro LED pixels; and bumps electrically connecting the respective micro LED pixels and the CMOS cells corresponding to the respective micro LED pixels, in a state in which the micro LED pixels and the CMOS cells are disposed facing each other, wherein flip-chip bonding is performed by using the bumps so that the respective micro LED pixels correspond to the respective CMOS cells formed on the CMOS backplane, and thus the micro LED pixels are controlled individually.

Description

technical field [0001] The present invention relates to a micro-LED array display device, more specifically, to a micro-LED array display device in which a plurality of micro-LED pixels are arranged on a micro-LED panel in an etching process when manufacturing an LED chip , and the micro LED panel in this state is flip-chip welded on a CMOS backplane (Backplane) using bumps, so that it can be configured in such a way that the micro LED pixels can be individually driven, so that it can be used as a micro display. Background technique [0002] Light Emitting Diodes (LEDs) are surging in demand in terms of low power consumption and environmental friendliness, and are widely applicable not only to lighting devices or backlights of liquid crystal displays (LCDs), but also to display devices. [0003] As a solid-state element that converts electrical energy into light, LED basically uses the following principle: it includes an active layer between two doped layers, that is, an n-t...

AI Technical Summary

Problems solved by technology

In this case, the size of the micro LED array display is increased since the elements responsible for signal control of the micro LED pixels should be formed separately in the peripheral area, and the data lines arrayed along the vertical and horizontal axes should be connected to the micro LEDs by wire bonding. pixels are connected, thus making the process complex and inconvenient

[0004] Moreover, when forming a plurality of micro-LED pixels on one substrate, due to technical limitations when forming structures for emitting red light, green light, and blue light on one substrate, it is used in micro-LED array display devices. In the case of LED light sources, in the past, there was a difficulty that it could only be reflected in a single color

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