Patent ID: 7671948

Claim:
A projection display device comprising: a liquid crystal panel including: a first substrate, a second substrate disposed to face the first substrate, a liquid crystal layer sandwiched between the first substrate and the second substrate, and a first optical compensation plate fixed directly to the first substrate, the first substrate disposed between the first optical compensation plate and the liquid crystal layer; a second optical compensation plate disposed at a side of the first substrate or the second substrate of the liquid crystal panel; and a pivot mechanism supporting the second optical compensation plate to be pivotable around an optical axis of light passing through the first substrate and the second substrate, the pivot mechanism including: a bearing, a fixing screw, and a shaft being attached on the top of the second optical compensation plate, the shaft being held so as to be freely pivotable through the bearing and such that the shaft can be fixed so as to be not pivotable by tightening the fixing screw.