Invention Grant
- Patent Title: Electroluminescent device aging compensation with multilevel drive
- Patent Title (中): 电致发光器件老化补偿多电平驱动
-
Application No.: US13017749Application Date: 2011-01-31
-
Publication No.: US08456390B2Publication Date: 2013-06-04
- Inventor: Christopher J. White
- Applicant: Christopher J. White
- Applicant Address: US VA Hemdon
- Assignee: Global OLED Technology LLC
- Current Assignee: Global OLED Technology LLC
- Current Assignee Address: US VA Hemdon
- Agency: Global OLED Technology LLC
- Main IPC: G09G3/30
- IPC: G09G3/30 ; G09G3/10

Abstract:
Compensation for aging of an electroluminescent (EL) emitter having a luminance and a chromaticity that both correspond to the density of the current and the age of the EL emitter is performed. Different black, first and second current densities are selected based on the measured age, each corresponding to emitted light colorimetrically distinct from the light emitted at the other two current densities. Respective percentages of a selected emission time are calculated for each current density to produce a designated luminance and chromaticity. The current densities are provided to the EL emitter for the calculated respective percentages of the emission time so that the integrated light output of the EL emitter during the selected emission time is colorimetrically indistinct from the designated luminance and chromaticity, no matter the age of the EL emitter.
Public/Granted literature
- US20120194099A1 ELECTROLUMINESCENT DEVICE AGING COMPENSATION WITH MULTILEVEL DRIVE Public/Granted day:2012-08-02
Information query
IPC分类: