Patent ID: 7535543

Claim:
A liquid crystal display apparatus including a light source emitting light, a liquid crystal panel modulating the light emitted by the light source, and a cooling unit cooling a surface of the liquid crystal panel by using a cooling fluid, the light emitted from the light source transmitting into the cooling fluid, the light emitted from the light source is used for displaying an image by the liquid crystal panel and the cooling fluid, the cooling unit comprising: a receiving unit formed with a feed port to which the cooling fluid is supplied and a drain port from which the cooling fluid is drained, and receiving the cooling fluid supplied from the feed port in a receiving space; a cooling fluid pump draining the cooling fluid received in the receiving unit from the drain port, and supplying the cooling fluid from the feed port to the receiving unit to cause the receiving space to receive the cooling fluid; and a flow path block unit blocking a part of the flow path of the cooling fluid supplied from the feed port to an area corresponding to the liquid crystal panel in the received unit, wherein, the receiving space is placed and opposed to a surface of the liquid crystal panel to which the light is emitted from the light source, the flow path block unit is placed and opposed to the feed port, and the flow path block unit is formed such that the maximum height of its surface roughness is equal to or greater than 10 μm.