FLAT-PANEL DISPLAY WITH LUMINANCE FEEDBACK

• Main Authors: COK RONALD S, TANG CHING WAN
• Format: Patent
• Language: English
• Published: 18.10.2012
• Subjects: ADVERTISING; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION; BASIC ELECTRIC ELEMENTS; CRYPTOGRAPHY; DISPLAY; DISPLAYING; EDUCATION; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; LABELS OR NAME-PLATES; PHYSICS; SEALS; SEMICONDUCTOR DEVICES; SIGNS

PROBLEM TO BE SOLVED: To solve the problem that conventionally a complicated circuit is required to compensate for a decrease in luminous efficiency.SOLUTION: An image display comprises: a substrate; an array of addressable light emitters formed on the substrate and including a light emissive layer and electrode layers on both sides of the light emissive layer, deposited on the substrate; a drive circuit for driving the light emitters to emit light in an imagewise pattern; one or more photosensors formed on the substrate and including a photosensor layer directly optically coupled to the light emissive layer of the light emitters in the array to detect light emitted by the light emitters and to generate a feedback signal in response thereto and electrode layers on both sides of the photosensor layer, deposited on the substrate; and a feedback control circuit responsive to the feedback signal for controlling the drive circuit, in which the array of light emitters and the one or more photosensors are arranged adjacent to each other on the substrate.