Abstract: According to one embodiment, a light control device includes a first liquid crystal cell including a first liquid crystal layer, a second liquid crystal cell including a second liquid crystal layer, and a polarization conversion element. The first liquid crystal layer and the second liquid crystal layer each includes a first region which scatters a first polarized component and transmits a second polarized component and a second region which transmits the first polarized component and scatters the second polarized component. The polarization conversion element overlaps the first region and the second region, converts the first polarized component into the second polarized component, and converts the second polarized component into the first polarized component.

Abstract: According to one embodiment, a light control device includes a first substrate including a plurality of first control electrodes disposed in an effective area, and a plurality of feed lines disposed in a peripheral area, a second substrate, and a first liquid crystal layer. The first control electrodes are transparent electrodes. Each of the first control electrodes includes, in the effective area, first segments crossing a first direction at a first angle, second segments crossing the first direction at a second angle, and third segments crossing the first direction at a third angle. The first control electrode is electrically connected to the feed line. The first to third angles are different from each other.

Abstract: According to one embodiment, a light control device includes a first liquid crystal cell, a second liquid crystal cell, and a polarization conversion element disposed between the first liquid crystal cell and the second liquid crystal cell. One substrate of each of the first liquid crystal cell and the second liquid crystal cell includes an insulating substrate, and first to fourth electrodes arranged on the insulating substrate and formed in a strip shape. The electric potential difference between the first electrode and the second electrode, the electric potential difference between the second electrode and the third electrode, and the electric potential difference between the third electrode and the fourth electrode are different from each other.

Abstract: According to one embodiment, a light control device includes a first liquid crystal cell, a second liquid crystal cell, and a polarization conversion element disposed between the first liquid crystal cell and the second liquid crystal cell. One substrate of each of the first liquid crystal cell and the second liquid crystal cell includes an insulating substrate, and first to fourth electrodes arranged on the insulating substrate and formed in a strip shape. The electric potential difference between the first electrode and the second electrode, the electric potential difference between the second electrode and the third electrode, and the electric potential difference between the third electrode and the fourth electrode are different from each other.

Abstract: According to one embodiment, an optical control device includes a first liquid crystal cell and a second liquid crystal cell. The second liquid crystal cell is stacked on the first liquid crystal cell. The first liquid crystal cell has a function of modulating and converting a first polarization component of incident light into a second polarization component, and hardly modulating and converting a third polarization component of incident light into a fourth polarization component. The second liquid crystal cell has a function of hardly modulating the second polarization component transmitted through the first liquid crystal cell, and modulating the fourth polarization component transmitted through the first liquid crystal cell.

Abstract: According to one embodiment, a light control device comprises a first liquid crystal cell includes a first liquid crystal layer, a second liquid crystal cell includes a second liquid crystal layer, and a third liquid crystal cell includes a third liquid crystal layer. The first liquid crystal layer and the third liquid crystal layer each have a first region that scatters a first polarization component and that transmits a second polarization component. The second liquid crystal layer has a third region that overlaps the first region and converts the second polarization component into the first polarization component.

Abstract: According to one embodiment, a light control device includes a first liquid crystal cell, a second liquid crystal cell and a polarized light conversion element disposed between the first liquid crystal cell and the second liquid crystal cell. One substrate of an pair of substrates of each of the first liquid crystal cell and the second liquid crystal cell includes an insulating substrate, a plurality of first electrodes arranged along one direction on the insulating substrate and formed in a strip shape, a first inorganic insulating film covering the first electrodes and a plurality of second electrodes intersecting the first electrodes on the first inorganic insulating film and formed in a strip shape.

Abstract: According to one embodiment, a light control device includes a first liquid crystal cell including a first liquid crystal layer, a second liquid crystal cell including a second liquid crystal layer, and a polarization conversion element. The first liquid crystal layer and the second liquid crystal layer each includes a first region which scatters a first polarized component and transmits a second polarized component and a second region which transmits the first polarized component and scatters the second polarized component. The polarization conversion element overlaps the first region and the second region, converts the first polarized component into the second polarized component, and converts the second polarized component into the first polarized component.

Abstract: According to one embodiment, a light control device includes a first liquid crystal cell including a first liquid crystal layer, a second liquid crystal cell including a second liquid crystal layer, and a polarization conversion element. The first liquid crystal layer and the second liquid crystal layer each includes a first region which scatters a first polarized component and transmits a second polarized component and a second region which transmits the first polarized component and scatters the second polarized component. The polarization conversion element overlaps the first region and the second region, converts the first polarized component into the second polarized component, and converts the second polarized component into the first polarized component.

Abstract: According to one embodiment, a light control device includes a first liquid crystal cell including a first liquid crystal layer, a second liquid crystal cell including a second liquid crystal layer, and a polarization conversion element. The first liquid crystal layer and the second liquid crystal layer each includes a first region which scatters a first polarized component and transmits a second polarized component and a second region which transmits the first polarized component and scatters the second polarized component. The polarization conversion element overlaps the first region and the second region, converts the first polarized component into the second polarized component, and converts the second polarized component into the first polarized component.

Abstract: According to one embodiment, a light control device includes a first liquid crystal cell, a second liquid crystal cell, and a polarization conversion element disposed between the first liquid crystal cell and the second liquid crystal cell. One substrate of each of the first liquid crystal cell and the second liquid crystal cell includes an insulating substrate, and first to fourth electrodes arranged on the insulating substrate and formed in a strip shape. The electric potential difference between the first electrode and the second electrode, the electric potential difference between the second electrode and the third electrode, and the electric potential difference between the third electrode and the fourth electrode are different from each other.

Abstract: According to one embodiment, a light control device comprises a first liquid crystal cell includes a first liquid crystal layer, a second liquid crystal cell includes a second liquid crystal layer, and a third liquid crystal cell includes a third liquid crystal layer. The first liquid crystal layer and the third liquid crystal layer each have a first region that scatters a first polarization component and that transmits a second polarization component. The second liquid crystal layer has a third region that overlaps the first region and converts the second polarization component into the first polarization component.

Abstract: According to one embodiment, a light control device includes a first liquid crystal cell, a second liquid crystal cell and a polarized light conversion element disposed between the first liquid crystal cell and the second liquid crystal cell. One substrate of an pair of substrates of each of the first liquid crystal cell and the second liquid crystal cell includes an insulating substrate, a plurality of first electrodes arranged along one direction on the insulating substrate and formed in a strip shape, a first inorganic insulating film covering the first electrodes and a plurality of second electrodes intersecting the first electrodes on the first inorganic insulating film and formed in a strip shape.

Abstract: According to one embodiment, a light control device includes a first substrate including first to third electrodes formed in an annular shape and a fourth electrode, a second substrate, and a liquid crystal layer held between the first substrate and the second substrate. The first electrode and the second electrode are arranged in a first direction. The first electrode and the third electrode are arranged in a direction different from the first direction. The fourth electrode is adjacent to the first to third electrodes.

Abstract: According to one embodiment, a light control device includes a first substrate including a plurality of first control electrodes disposed in an effective area, and a plurality of feed lines disposed in a peripheral area, a second substrate, and a first liquid crystal layer. The first control electrodes are transparent electrodes. Each of the first control electrodes includes, in the effective area, first segments crossing a first direction at a first angle, second segments crossing the first direction at a second angle, and third segments crossing the first direction at a third angle. The first control electrode is electrically connected to the feed line. The first to third angles are different from each other.

Abstract: According to one embodiment, an optical control device includes a first liquid crystal cell and a second liquid crystal cell. The second liquid crystal cell is stacked on the first liquid crystal cell. The first liquid crystal cell has a function of modulating and converting a first polarization component of incident light into a second polarization component, and hardly modulating and converting a third polarization component of incident light into a fourth polarization component. The second liquid crystal cell has a function of hardly modulating the second polarization component transmitted through the first liquid crystal cell, and modulating the fourth polarization component transmitted through the first liquid crystal cell.

Abstract: According to one embodiment, an illumination device includes an electrochromic element and light sources. The electrochromic element includes a first transparent substrate, a first transparent electrode provided on the first transparent substrate, a second transparent substrate opposing the first transparent substrate, projections provided on the second transparent substrate and projecting toward the first transparent substrate, a second transparent electrode provided on a part of the projection and an electrolyte layer provided between the first transparent substrate and the second transparent substrate and containing an electrochromic material including a reflective material capable of oxidation-reduction.

Abstract: According to an aspect, a display device includes: sub-pixels arranged in row and column directions and each including a memory block including memories to store therein sub-pixel data; memory selection line groups corresponding to rows and each including memory selection lines electrically coupled to the memory blocks in the respective sub-pixels that belong to the corresponding row; and a memory selection circuit configured to concurrently output a memory selection signal to the memory selection line groups. Each sub-pixel displays an image based on the sub-pixel data stored in one of the memories in accordance with the memory selection line supplied with the memory selection signal. The number of times that the set value is changed is less than the number of times that images are switched from one to another based on the memory selection signal output from the memory selection circuit.

Abstract: According to one embodiment, a display device includes a display panel, a light source, a lightguide, and reflective elements. The lightguide includes a first end facing the light source, a first surface opposed to the display panel, and a second surface. The reflective elements are disposed inside the lightguide, the elements configured to reflect light passing through the first end to spread in the lightguide and to transmit the light through the first surface. Reflective elements are arranged to be apart from the first or second surface with a certain distance and has a reflective surface facing the first surface and projects toward the second surface, the reflective surface is inclined such that the light from the first end can be irradiated to the first surface.

Abstract: According to an aspect, a display device includes: sub-pixels arranged in row and column directions and each including a memory block including memories to store therein sub-pixel data; memory selection line groups corresponding to rows and each including memory selection lines electrically coupled to the memory blocks in the respective sub-pixels that belong to the corresponding row; and a memory selection circuit configured to concurrently output a memory selection signal to the memory selection line groups. Each sub-pixel displays an image based on the sub-pixel data stored in one of the memories in accordance with the memory selection line supplied with the memory selection signal. The number of times that the set value is changed is less than the number of times that images are switched from one to another based on the memory selection signal output from the memory selection circuit.