Patent ID: 8648898

Claim:
Stereoscopic liquid crystal shutter glasses comprising: a left-eye liquid crystal shutter; and a right-eye liquid crystal shutter; each of the left-eye liquid crystal shutter and the right-eye liquid crystal shutter having a response time not more than 5 milliseconds; each of the left-eye liquid crystal shutter and the right-eye liquid crystal shutter having a contrast ratio not less than 350:1, the contrast ratio being a value at an angle of sight of 30 degrees in left direction and in right direction; wherein the left-eye liquid crystal shutter and the right-eye liquid crystal shutter include a bend-aligned liquid crystal layer; and wherein the left-eye liquid crystal shutter further includes: a first polarizing plate; a second polarizing plate; a first viewer-side optical layer; a second viewer-side optical layer; a first display device side optical layer; and a second display device side optical layer, the bend-aligned liquid crystal layer is disposed between the first polarizing plate and the second polarizing plate, the first viewer-side optical layer is disposed between the first polarizing plate and the bend-aligned liquid crystal layer, the second viewer-side optical layer is disposed between the first polarizing plate and the first viewer-side optical layer, the first display device-side optical layer is disposed between the second polarizing plate and the bend-aligned liquid crystal layer, the second display-device side optical layer is disposed between the second polarizing plate and the first display-device side optical layer, an angle between a first absorption axis of the first polarizing plate and a liquid crystal alignment axis of the bend-aligned liquid crystal layer is 45 degrees, a second absorption axis of the second polarizing plate is perpendicular to the first absorption axis and an angle between the second absorption axis and the liquid crystal alignment axis is 45 degrees, a retardation of the first viewer-side optical layer is equal to a retardation of the second viewer-side optical layer, and a retardation of the first display device-side optical layer is equal to a retardation of the second display device-side optical layer.