公开(公告)号：US20200225418A1

公开(公告)日：2020-07-16

申请号：US16826548

申请日：2020-03-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Liangjia ZONG ,  Lei MAO ,  Mi WANG ,  Han ZHAO

IPC: G02B6/293 ,  G02F1/31

Abstract: A liquid crystal on silicon, a wavelength selective switch, an alignment direction obtaining method, and a method for manufacturing a liquid crystal on silicon. The liquid crystal on silicon has a first pixel area, and a first liquid crystal located in the first pixel area. The first liquid crystal is deflected in a plane perpendicular to a first panel, and is deflected towards a first direction in a plane parallel to the first panel. An alignment direction of the first partial alignment film located in the first pixel area is deflected towards a second direction relative to a polarization direction of an incident beam, and the second direction is opposite to the first direction to reduce a loss of a deflected beam.