LIQUID CRYSTAL DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a liquid crystal display device of which the readout resolution is improved while the mechanical strength is maintained. SOLUTION: An optical sensor 44 is disposed on an optical sensor array substrate 23 functioning as a counter substrate. The optical sensor array substrate 23 is made to oppose a TFT array substrate 22 and is laminated thereto so as to form a liquid crystal cell 21. A distance from a surface of the optical sensor array substrate 23 to the optical sensor 44 is made small. Diffusion of reflected light L2in the optical sensor array substrate 23 is prevented. The readout resolution by the optical sensor 44 is improved. A glass substrate 41 of the optical sensor array substrate 23 is not polished. There is no problem in the mechanical strength of the optical sensor array substrate 23. COPYRIGHT: (C)2005,JPO&NCIPI