Patent ID: 9201268
Filing Date: 2015-12-01
Classification: G02F

Abstract:
1. A liquid-crystal-lens type light-modulating apparatus, comprising: a first light-transmissive substrate, with a first electrode layer and a first alignment layer being provided sequentially on an upper surface of the first substrate; a second light-transmissive substrate located over the first substrate, with a second electrode layer and a second alignment layer being provided sequentially on a lower surface of the second substrate; an electrode-voltage control circuit connected to at east one of the first electrode layer and the second electrode layer; and liquid crystal sandwiched between the first alignment layer and the second alignment layer, wherein at least one of the first electrode layer and the second electrode layer is formed as a patterned electrode, and the patterned electrode comprises: a plurality of light-transmissive electrode regions and a plurality of light-shielding regions, arranged at an interval therebetween, and the light-transmissive electrode regions correspond to liquid-crystal-lenses; and the liquid-crystal-lens type light-modulating apparatus further comprises a shielding sheet provided above the second substrate and on a light exiting side of the liquid-crystal-lens type light-modulating apparatus, and the shielding sheet comprises: a plurality of shielding sheet light-transmissive regions and a plurality of shielding sheet light-shielding regions, arranged at an interval therebetween; each of the shielding sheet light-shielding regions is located over one of the electrode regions in the patterned electrode, and has an area less than an area of the one of the electrode regions corresponding to it; and a projection of each of the shielding sheet light-shielding regions on the second substrate, along a direction vertical to the second substrate, is between two adjacent light-shielding regions of the patterned electrode, which two adjacent light-shielding regions defining corresponding one of light-transmissive electrode regions of the patterned electrode; the electrode-voltage control circuit is provided to control voltages applied to the at least one of the first electrode layer and the second electrode layer and thus the liquid-crystal-lenses have different focal-lengths to modulate light intensities bypassing the shielding sheet emitting out from the liquid-crystal-lenses.