Display device comprising plurality of LEDs and measuring method thereof

• Main Author: M. F. JHNSON,J. N. HUIBERTS,A. GIRALDO
• Format: Patent
• Language: English
• Published: 05.04.2006
• Subjects: ADVERTISING; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION; BASIC ELECTRIC ELEMENTS; CRYPTOGRAPHY; DISPLAY; DISPLAYING; EDUCATION; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; LABELS OR NAME-PLATES; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; SEALS; SEMICONDUCTOR DEVICES; SIGNS; TESTING

The invention relates to a display device comprising a plurality of light-emitting diodes (LEDs), which comprise at least one layer of an electroluminescent (EL) material sandwiched between electrodes, and driving means for driving the diodes. The device further comprises means for applying a reverse voltage to one or more individual diodes or groups of diodes and means for measuring the leakage current resulting from this reverse voltage. The invention also relates to a method of manufacturing such a display device and to an electronic device, such as a mobile telephone or an organiser, comprising such a display device.