Patent ID: 8686971

Claim:
A method of manufacturing a liquid crystal display device including a liquid crystal panel comprising the steps of: providing (a) a first substrate, (b) a second substrate facing said first substrate, (c) a liquid crystal layer disposed between said first substrate and said second substrate, (d) providing a pixel area on a surface side of said first substrate facing said second substrate, and (e) providing first and second electrodes each configured to apply a transverse electric field to said liquid crystal layer in said pixel area; forming a light receiving element configured to (a) receive an incident light from a side of said second substrate to a side of said first substrate through said liquid crystal layer in said pixel area on a light receiving surface thereof, and (b) form data on the light receiving surface; forming a planarizing film over said light receiving element in said pixel area, said planarizing film comprising an organic layer over an inorganic layer; and forming an insulating film between said first and second electrodes in said pixel area on the surface of said first substrate facing said second substrate, wherein, in the step of forming said insulating film, said insulating film is formed on a surface of said planarizing film in an area corresponding to a sensor area having said light receiving element provided therein, and an etching processing for removing said insulating film formed on the surface of said planarizing film in said sensor area is not carried out.