Patent ID: 8085372

Claim:
A liquid crystal display device manufacturing method comprising: a first step of forming a first substrate having a first alignment film; a second step of forming a second substrate having a second alignment film; and a third step of attaching the first substrate and the second substrate to each other, and encapsulating a liquid crystal layer between the pair of substrates, the first alignment film and the second alignment film being respectively formed by performing alignment processing to irradiate a photo decomposition type insulating film with light on a previously determined condition, wherein the first step has: a step of forming a first thin film laminated body, having a plurality of scanning signal lines, a plurality of video image signal lines, a plurality of active devices, a plurality of pixel electrodes, a common electrode, and a plurality of insulating layers, on a first insulating substrate; and a step of forming the first alignment film on the first thin film laminated body, and wherein the second alignment film is formed to be thinner than the first alignment film, and to have a thickness after the alignment processing equal to or greater than 10 nm and equal to or less than 50 nm.