Method for manufacturing liquid crystal display device and photomask

• Main Authors: YAMAMOTO AKIHIRO, MUKAI KENICHI, AZAHARA YASUHIRO, OGAWARA NAOTO, OKUMOTO YOSHITAKA, NAGAI MARIKO, HYOHDOH KENICHI
• Format: Patent
• Language: Chinese; English
• Published: 21.08.2020
• Subjects: DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

A method for manufacturing a liquid crystal display device according to an embodiment of the present invention comprises a step (A) of preparing a first substrate having a pixel electrode and an unaligned first photoalignment film and a step (B) for exposing a region that is a first alignment region of the first photoalignment film via a plurality of first photomasks including two or more first photomasks aligned to intersect a given conveyance direction of the prepared first substrate while conveying the first substrate in the given conveyance direction. Each first photomask includes a plurality of pairs of a transmission part and a light-shielding part. Each first photomask is designed so that, in the step (B), the boundary between the transmission part and the light-shielding part shifts toward one end relative to a domain boundary at the one end of the first photomask and the boundary between the transmission part and the light-shielding part shifts toward the other end relative tothe domain boundary at t