Patent ID: 11915962
Assignee: KUNSHAN FANTAVIEW ELECTRONIC TECHNOLOGY CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A manufacturing method of a high resolution micro-LED display panel, the method comprising: proving a driving backplane with a first bonding metal layer;
providing a micro-LED substrate with a second bonding metal layer and a light-emitting layer, wherein the micro-LED comprises a basic substrate with the second bonding metal layer and the light-emitting layer disposed on opposites sides thereof; wherein the light-emitting layer comprises a first semiconductor layer, a multiple quantum well layer, and a second semiconductor layer arranged on the multiple quantum well layer, and wherein the second semiconductor layer is electrically connected to the second bonding metal layer;
bonding the first bonding metal layer and the second bonding metal layer to form a bonded metal layer, and removing the basic substrate from the micro-LED substrate; forming a photoresist layer on the first semiconductor layer of the micro-LED substrate and obtain the photoresist layer pattern;
patterning the micro-LED substrate and the bonded metal layer to form a pixel array and a metal bonding array, wherein the photoresist layer is used as a mask, and the pixel array and the metal bonding array formed by using a lithography process and a reactive ion etching (RIE) process;
forming an insulating layer enclosing the pixel array the metal bonding array;
defining an opening from the insulating layer each corresponding to a pixel of the pixel array by using a lithography process and a reactive ion etching (RIE) process;
forming a metal layer over the insulating layer which extends along the insulating layer and also covers the openings;
forming a thin film encapsulation layer on an outside of the pixel array, the thin film packaging layer completely covering the pixel array together with the metal layer and the insulating layer;
forming a pixel definition layer on a top surface of the thin film encapsulation layer by using lithography process and RIE process;
electrofluid printing the quantum dots in the pixel definition layer which is positioned correspondingly confronting to the opening, wherein a gap defined between the neighbored quantum dots is correspondence to a region between two adjacent pixels of the pixel array;
forming an insulating protective layer enclosing the quantum dots and the pixel definition layer;
forming a metal reflective layer over the insulating protective layer which extends along the insulating layer; and
forming a reflective array from the reflective layer by using a lithography process and RIE process, wherein the reflective array is arranged between the quantum dots and covering the gaps therebetween to avoid optical crosstalk.