Patent ID: 9372343
Filing Date: 2016-06-21
CPC Classification: B60K,G02B,G02F

Claim Text:
1. A head-up display adapted to a vehicle, the vehicle having a windshield, the head-up display comprising: a casing; a control circuit board disposed in the casing; a display panel disposed in the casing and coupled to the control circuit board, wherein the display panel is aligned to a displaying region of the head-up display; and a plate, disposed in the casing and covering the display panel, wherein when the vehicle is started, the control circuit board receives power, and the transmittance of the plate is increased so that an image displayed on the display panel is directly projected to the windshield through the plate, and when the vehicle is not activated, the control circuit board does not receive power, and the transmittance of the plate is decreased such that an external light via the windshield irradiating on the display panel through the plate is reduced, wherein the display panel has a display surface facing the plate, the plate has a rear surface facing the display panel, and an area of the display surface is not smaller than an area of the rear surface.