A light control sheet (10) of the present invention includes: a pair of orientation layers including a first orientation layer (11a) and a second orientation layer (11b); a light control layer (12) sandwiched between the first orientation layer (11a) and the second orientation layer (11b) and containing a polymer network (12a) and a plurality of domains (12b) dispersed in the polymer network (12a), the plurality of domains (12b) being filled with a liquid crystal composition (12c) containing liquid crystal molecules (12c1) and dichroic dyes (12c2); a pair of transparent electrodes (13a, 13b) sandwiching the pair of orientation layers; and a polarizing layer (14) positioned on the opposite side of the first orientation layer (11a) to the light control layer (12). The transmittance of the light control layer (12) increases upon application of a driving voltage to the pair of transparent electrodes (13a, 13b). In a state in which no driving voltage is applied between the transparent electrodes, the pair of orientation layers orient the liquid crystal molecules(12c1) and the dichroic dyes (12c2) horizontally to the pair of orientation layers and also such that absorption axes of the dichroic dyes (12c2) cross an absorption axis of the polarizing layer (14) as viewed in the thickness direction of the light control layer (12).
DIMMING SHEET AND DIMMING WINDOW
DIMMSCHICHT UND DIMMFENSTER
FEUILLE DE GRADATION ET FENÊTRE DE GRADATION
2021-01-06
Patent
Electronic Resource
English
IPC: | G02F DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING,... , Vorrichtungen oder Anordnungen, deren optische Arbeitsweise durch Änderung der optischen Eigenschaften des Mediums der Vorrichtungen oder Anordnungen geändert wird zum Steuern der Intensität, Farbe, Phase, Polarisation oder der Richtung von... / B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge |
TOUCH DIMMING DEVICE AND TOUCHABLE DIMMING VEHICLE WINDOW
European Patent Office | 2021
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