Patent ID: 9310637
Filing Date: 2016-04-12
CPC Classification: G02F

Claim Text:
1. A liquid crystal display device, comprising: a light source; a liquid crystal display panel which modulates light emitted from the light source, based on a video signal; a wire-grid polarization plate located on at least one of a light-incident side and a light-emission side of the liquid crystal display panel, the wire-grid polarization plate including a base plate and a plurality of wires arranged in stripes on the base plate; a projection lens which projects the light modulated by the liquid crystal display panel; a cooling part which supplies wind to the liquid crystal display panel and the wire-grid polarization plate to cool them; and a covering wall which is in contact with only end faces of the plurality of wires at a windward side of the wire-grid polarization plate in a flow direction of the wind supplied from the cooling part, and covers only the end faces of the plurality of wires at the windward side of the wire-grid polarization plate in the flow direction of the wind supplied from the cooling part and ends of a plurality of grooves formed between the plurality of wires for preventing moisture from reaching the grooves.