LED transfer device comprising mask and micro LED transferring method using the same
US11152245B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2019 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | Nov 20, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/0364
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A micro LED transfer device is provided. The micro LED transfer device includes a transfer part configured to arrange a first substrate wherein a plurality of LEDs are disposed on a lower surface relative to an upper surface of a second substrate; a memory storing characteristic information of each of the plurality of LEDs; a laser light source configured to irradiate laser light; a mask comprising a plurality of shutters configured to selectively open and close a plurality of openings of the mask, the mask being interposed between the first substrate and the laser light source; and a processor configured to identify an LED from among the plurality of LEDs to be arranged on the second substrate based on the stored characteristic information, and control the mask such that a shutter from among the plurality of shutters that corresponds to the LED is opened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.