Method for improving the colour difference of LED display screen
US12027504B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2019 |
| Grant date | Jul 2, 2024 |
| Priority date | — |
| Expiry date | Mar 22, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/0364
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present application provides a method for improving colour difference of an LED display screen, comprising: drilling and polishing circuit surfaces of a plurality of LED substrates; performing screen printing on the circuit surfaces of the plurality of LED substrates, and performing oil skimming on a mesh screen during the screen printing every other preset printing cycle in such a way that an ink on the mesh screen has a viscosity within a predetermined viscosity range; performing an exposure setting process on the plurality of LED substrates that have been screen printed to obtain a plurality of LED printed circuit boards; and finally assembling the plurality of LED printed circuit boards to form an LED display screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.