Reflective displays, which harness ambient light, offer energy-efficient alternatives to
traditional emissive screens in mobile devices. This review provides an overview of various …

An optical apparatus may comprise: an electrically reconfigurable optical layer comprising at
least one phase-change material, wherein an optical property of the phase-change material …

(57) ABSTRACT A switchable reflective colour filter is provided for use in a display device.
The switchable reflective colour filter includes a plurality of sub-pixel regions of at least two …

A solid state optical beam steering device including a body of electro-optical material
wherein the body of electro-optical material comprises any material of a class of hydrogen …

US11493824B2 - Solid state electrically variable-focal length lens - Google Patents
US11493824B2 - Solid state electrically variable-focal length lens - Google Patents Solid state …

(57) ABSTRACT A magnetic cell and method for providing the magnetic cell are described.
A magnetic cell resides on a substrate and is usable in a magnetic device. The magnetic cell …

US11256132B2 - Color conversion film comprising a color conversion functional layer
including a solid phase change material, and back light unit and display device comprising …

(57) ABSTRACT A process enables growing thick stoichiometric crystalline and preferably
IR-transparent optical PCMO material on Si and other substrates. Sputter deposition is …

Display apparatuses are disclosed. In one arrangement, a display apparatus comprises a
plurality of pixel units. Each pixel unit comprises: an optically switchable element; a heater …

An electric field-controlled refractive index tunable device includes a phase change
correlated transition metal oxide layer, and E-field responsive charge dopants. The E-field …