Patent ID: 11927850
Assignee: SHARP DISPLAY TECHNOLOGY CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 4:
5. The liquid crystal display device according to claim 1,
wherein the retardation layer includes two layers of a first retardation layer and a second retardation layer,
each of the first retardation layer and the second retardation layer is a biaxial retardation layer including an in-plane phase difference R0 and a thickness direction phase difference Rth,
the first retardation layer is disposed closer to the first polarizer,
a slow axis of the first retardation layer is 30° or more and 60° or less with respect to the reflection axis of the first polarizer, and
a slow axis of the second retardation layer is orthogonal to the slow axis of the first retardation layer.