Method of manufacturing a display using a film-based lightguide and diffusely reflective release liner
US12135450B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2021 |
| Grant date | Nov 5, 2024 |
| Priority date | — |
| Expiry date | Oct 18, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0068
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of manufacturing a display includes coupling light from at least one light source into a front illumination film-based lightguide comprising a pressure sensitive adhesive layer between a core polymer film layer and a diffusely reflective release liner such that light from the at least one light source propagates by total internal reflection through the core polymer film layer, is extracted from the core polymer film layer, passes through the pressure sensitive adhesive layer, diffusely reflects from the diffusely reflective release liner and passes back through the pressure sensitive adhesive layer and core polymer film layer out of the front illumination film-based lightguide; analyzing the light exiting front illumination film-based lightguide from the at least one light source for defects; removing the diffusely reflective release liner from the front illumination film-based lightguide after analyzing; and laminating the front illumination film-based lightguide to a reflective spatial light modulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.