07355574 is referenced by 130 patents and cites 8 patents.

Compensated drive circuit adjusting for changes in the threshold voltage of a drive transistor and for aging of an OLED device, comprising: a data line carrying analog data representative of the brightness level, and a select line; the drive transistor connected to a power supply and to the OLED device such that when the select line is activated and a voltage from the data line is applied to the gate electrode of such transistor and current proportional to the applied voltage will flow through the drain and source electrodes through the OLED device; circuitry for measuring first and second parameters associated with the drive circuitry and responsive to the measured first and second parameters for computing offset voltages to adjust for changes in the threshold voltage of the drive transistors and for aging of the OLED device.

Title
OLED display with aging and efficiency compensation
Application Number
11/626563
Publication Number
7355574 (B1)
Application Date
January 24, 2007
Publication Date
April 8, 2008
Inventor
Christopher J White
Avon
NY, US
Gary Parrett
Rochester
NY, US
Felipe A Leon
Rochester
NY, US
Agent
Raymond L Owens
Assignee
Eastman Kodak Company
NY, US
IPC
G09G 3/32
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