Patent ID: 6771331
Filing Date: 2004-08-03
Classification: F21S,G02B,G02F

Abstract:
A liquid crystal display device utilizing ambient light for illuminating a liquid crystal panel located in a casing, comprising:a light-collecting unit for collecting ambient light and converting at least part of the collected ambient light into transmitting light transmitted in said light-collecting unit, and a light-guiding unit for guiding the transmitting light to said liquid crystal panel by redirecting a light path of the transmitting light, wherein: said light-collecting unit comprises a first light-collecting unit having end faces and located on a face of the casing opposite to a face on which said liquid crystal panel is located, and a second light-collecting unit having end faces and located on an upper face of the casing, wherein one of the end faces of said second light-collecting unit is connected to one of the end faces of said first light-collecting unit, and the other end face of said second light-collecting unit is connected to one of the end faces of said light-guiding unit.