Manufacturing method and manufacturing system for optical display device
US8083885B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2010 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Apr 29, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1476
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention is directed to a method for manufacturing an optical display device comprising an optical film including a polarizing plate and a rectangular optical display unit having a surface to which the optical film is bonded, the method comprising the steps of: preparing a material roll which is a roll of a long sheet material obtained by lengthwise slitting a long material comprising an optical film into a width corresponding to a short or long side of the optical display unit, wherein the optical film includes a polarizing plate having a longitudinal direction parallel to its absorption axis; and unwinding the long sheet material from the material roll, cutting at least the optical film of the long sheet material to form an optical film having a length corresponding to a long or short side of the optical display unit, and then bonding the optical film to a surface of the optical display unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.