公开(公告)号：JP2002341304A

公开(公告)日：2002-11-27

申请号：JP2001145687

申请日：2001-05-15

Applicant: IBM

Inventor： WADA TAKEHIKO ,  KOBAYASHI SHIGETAKA ,  YAMADA SHICHIRO ,  HASHIMOTO YUJI

IPC: G02F1/13 ,  G02F1/1335 ,  G02F1/1337

Abstract: PROBLEM TO BE SOLVED: To efficiently and certainly modify a bright spot defective part of an optical device such as a liquid crystal display device. SOLUTION: The bright spot defective part formed on the liquid crystal display device 10 is irradiated with laser light emitted from a laser light source 101 via an attenuator 102, a half-wave plate 103, a beam expander 104, a variable slit 105 and a filter 60 from the display surface 10s side of the liquid crystal display device 10. In this case, because a wavelength of the laser light to be emitted is selected at a wavelength controlling part 106 corresponding to a color of a color filter on the bright spot defective part, the laser light passes through the color filter, reaches an alignment layer and changes the nature of the alignment layer.