Color conversion sheet and backlight unit including the same
US12291015B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2023 |
| Grant date | May 6, 2025 |
| Priority date | — |
| Expiry date | Jul 24, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2250/05
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A color conversion sheet according to the present invention includes a first wavelength conversion layer in which an organic phosphor is dispersed in a resin matrix, a first phosphor diffusion barrier layer positioned on one surface of the first wavelength conversion layer, and an adhesive layer positioned on one surface of the first phosphor diffusion barrier layer, wherein a Hildebrand solubility parameter of the first phosphor diffusion barrier layer satisfies a predetermined relationship between a Hildebrand solubility parameter of the resin matrix of the first wavelength conversion layer and a Hildebrand solubility parameter of a solvent contained in the first phosphor diffusion barrier layer, thereby resolving problems of changes in luminance characteristics and color change.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.