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US 11,237,446 B2Granted
Optical assembly, optical device, and manufacturing method thereof
AssigneeBoe Technology Group Co., Ltd.
InventorPengxia Liang
Life of this patent
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Abstract
An optical assembly for an optical device. The optical assembly comprises a first substrate and a second substrate opposite the first substrate. A dimming structure is disposed between the first substrate and the second substrate. A light shielding structure is disposed on a surface of the second substrate opposite to the first substrate. The light shielding structure is configured to absorb at least one of ultraviolet light, near-ultraviolet light, infrared light, or far-infrared light in the sunlight and output an electrical control signal, and the dimming structure is configured to adjust light transmittance in response to the electrical control signal.
Claims16
An optical assembly comprising:
- a first substrate and a second substrate opposite the first substrate;
- a dimming structure disposed between the first substrate and the second substrate;
- and
- a light shielding structure disposed on an outer surface of the second substrate that faces away from to the first substrate;
- wherein the light shielding structure absorbs ultraviolet light and transmits visible light, the light shielding structure does not affect visible transparency of the optical assembly, the light shielding structure outputs an electrical signal, and the dimming structure adjusts light transmittance in response to the electrical control signal,
- the dimming structure comprises:
- a third transparent electrode on a surface of the first substrate toward the second substrate;
- a fourth transparent electrode on a surface of the second substrate toward the first substrate;
- and
- a polymer dispersed liquid crystal layer between the third transparent electrode and the fourth transparent electrode;
- wherein the third transparent electrode and the fourth transparent electrode are configured to receive the electrical control signal to control visible and near-infrared light transmittance of the polymer dispersed liquid crystal layer,
- wherein the electrical control signal comprises a current signal or a voltage signal, the visible and near-infrared light transmittance of the polymer dispersed liquid crystal layer increases as the corresponding current value of the current signal or the corresponding voltage value of the voltage signal increases, and
- wherein the polymer dispersed liquid crystal layer is divided into a plurality of regions, the plurality of regions share same electrodes, the same electrodes are the third transparent electrode and the fourth transparent electrode, and light transmittance of the polymer dispersed liquid crystal layer in each of the plurality of regions is different under a same control signal from the third transparent electrode and the fourth transparent electrode;
- or light transmittance of the polymer dispersed liquid crystal layer in some of the plurality of regions is different from that in other remaining regions under the same control signal from the third transparent electrode and the fourth transparent electrode.
11 more elements
A method of manufacturing an optical assembly comprising:
- forming a dimming structure between a first substrate and a second substrate opposite the first substrate;
- and
- forming a light shielding structure on an outer surface of the second substrate that faces away from to the first substrate,
- wherein the light shielding structure absorbs ultraviolet light and transmits visible light, the light shielding structure does not affect visible transparency of the optical assembly, the light shielding structure outputs an electrical signal, and the dimming structure adjusts light transmittance in response to the electrical control signal,
- forming the dimming structure comprises:
- forming a third transparent electrode on the first substrate and a fourth transparent electrode on the second substrate;
- combining the first substrate and the second substrate to form a cell, the third transparent electrode facing the second substrate, and the fourth transparent electrode facing the first substrate;
- filling polymer dispersed liquid crystals between the first substrate and the second substrate;
- and
- forming a polymer dispersed liquid crystal layer through a polymerization process,
- wherein the third transparent electrode and the fourth transparent electrode are configured to receive the electrical control signal to control visible and near-infrared light transmittance of the polymer dispersed liquid crystal layer, and
- wherein the electrical control signal comprises a current signal or a voltage signal, the visible and near-infrared light transmittance of the polymer dispersed liquid crystal layer increases as the corresponding current value of the current signal or the corresponding voltage value of the voltage signal increases;
- and
- wherein forming the polymer dispersed liquid crystal layer through the polymerization process comprises:
- partially blocking the polymer-dispersed liquid crystals using a light-shielding member;
- after the blocking, irradiating the polymer dispersed liquid crystals with ultraviolet light to form a polymer dispersed liquid crystal layer;
- wherein the light-shielding member is divided into a plurality of regions, each of the regions having a different transmittance to the ultraviolet light;
- or light transmittance of some of the regions to the ultraviolet light is different from that of the remaining regions to the ultraviolet light.
15 more elements
Dependencies are inferred from the claim text.