公开(公告)号：US08619221B2

公开(公告)日：2013-12-31

申请号：US13926247

申请日：2013-06-25

Applicant: Japan Display Inc. ,  Panasonic Liquid Crystal Display Co., Ltd.

Inventor： Hidehiro Sonoda ,  Chikae Matsui ,  Noboru Kunimatsu ,  Yuko Matsumoto

IPC: G02F1/1337

CPC classification number: G02F1/1337 ,  G02F1/133345 ,  G02F1/133514 ,  G02F1/133788 ,  G02F1/134363 ,  G02F1/13439

Abstract: A liquid crystal display device has a liquid crystal display panel including pixels each having an active device, a pixel electrode, a common electrode and a liquid crystal layer arranged in a dot matrix array. The liquid crystal display panel has a first substrate, a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate. The first substrate has the active device, the pixel electrode, the common electrode and a first alignment film. The second substrate has a second alignment film. The first alignment film and the second alignment film are respectively a photo alignment film formed by irradiating a photo decomposition type insulating film with light. The second alignment film has a thickness of at least 10 nm and no greater 50 nm and is thinner than the first alignment film.