Liquid crystal display device
US10578915B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2018 |
| Grant date | Mar 3, 2020 |
| Priority date | — |
| Expiry date | Aug 29, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/50
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal display device has a liquid crystal panel including a liquid crystal cell and a polarizing plate; and a backlight unit including a light source. An outermost surface of the liquid crystal panel on the backlight unit side is a surface of a protective film included in the polarizing plate, an outermost surface of the backlight unit on the liquid crystal panel side is a surface of a diffusion member, and where an arithmetic mean roughness measured on an outermost surface of the liquid crystal panel on the backlight unit side is Ra1, a pencil hardness is P1, an arithmetic mean roughness measured on an outermost surface of the backlight unit on the liquid crystal panel side is Ra2, and a pencil hardness is P2, Expression 1: 33 nm<Ra1<135 nm, Expression 2: Ra2<15 nm, and Expression 3: P1<P2 are satisfied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.