Patent ID: 11942352
Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for manufacturing an LED display, comprising:
picking up a plurality of LED chips spaced apart at a first interval with a stretchable stamp;
spacing apart the plurality of LED chips at a second interval by stretching the stretchable stamp; and
transferring the plurality of LED chips to a target substrate,
using a plurality of pick-up pillars comprising a cylinder portion connected to the body and a top portion having a larger cross-sectional area than the cylinder portion on the upper surface of the cylinder portion,
wherein the cross-sectional area ratio of the cylinder portion and the top portion is 100:130 to 100:300, and
wherein the cylinder portion and the top portion each have a columnar shape.