Liquid-gas dual-state Mini/Micro LED chip mass transfer crystal film and manufacturing method thereof

Abstract

The invention discloses a liquid-gas dual-state Mini / Micro LED chip mass transfer crystal film and a manufacturing method thereof. The liquid-gas dual-state Mini / Micro LED chip mass transfer crystal film comprises a substrate, a medium storage grid, a liquid-gas dual-state medium, a sealant, an elastic layer and a bonding layer, by means of the characteristics that a liquid-gas dual-state medium is easy to heat and low in boiling point and the viscosity of a bonding layer is obviously reduced after being heated, laser matched with an absorption pattern of the liquid-gas dual-state medium penetrates through a substrate to irradiate the liquid-gas dual-state medium so that the liquid-gas dual-state medium can be gasified to generate bubbles, a chip is pushed to be transferred to a target substrate, and mass transfer of the chip is achieved. Compared with the existing heat release and ablation release, the method has the advantages that the repeated utilization of the crystal film and the high-precision mass transfer of the chip can be realized under the conditions of environment-friendly temperature and no pollutant generation.

Description

technical field [0001] The invention relates to a mass transfer technology of micro-light-emitting diodes, in particular to a liquid-gas two-state Mini / MicroLED chip mass transfer crystal film and a manufacturing method. Background technique [0002] Vision is the main channel for humans to obtain information. Studies have shown that among the information obtained by various sensory organs, vision accounts for 60%, hearing accounts for 20%, touch accounts for 15%, taste accounts for 3%, and smell accounts for 2%, of which nearly 2 / 3 The effective information is transmitted efficiently and with high quality through display technology. The birth of electronic display screens has changed the way of carrying and transmitting visual information, supporting the development of the modern information society. From simple traffic lights and digital tube displays to complex images, TV broadcasts, to virtual reality (VR) and augmented reality (AR), displays have penetrated into all as...

AI Technical Summary

Problems solved by technology

However, it is difficult to control the ablation process of the peeling layer, and it is easy to cause defects such as uneven chip drop, inaccurate position, and pollution of the working environment, and the crystal film cannot be reused, resulting in serious waste of crystal film materials.

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