07414600 is referenced by 160 patents and cites 32 patents.

A pixel current driver comprises a plurality of thin film transistors (TFTs) each having dual gates and for driving OLED layers. A top gate of the dual gates is formed between a source and a drain of each of the thin film transistors, to thereby minimize parasitic capacitance. The top gate is grounded or electrically tied to a bottom gate. The plurality of thin film transistors may be two thin film transistors formed in voltage-programmed manner or five thin film transistors formed in a current-programmed ΔVT-compensated manner. Other versions of the current-programmed circuit with different numbers of thin film transistors are also presented that compensate for δVT. The OLED layer are continuous and vertically stacked on the plurality of thin film transistors to provide an aperture ratio close to 100%.

Title
Pixel current driver for organic light emitting diode displays
Application Number
11/247455
Publication Number
7414600 (B2)
Application Date
October 11, 2005
Publication Date
August 19, 2008
Inventor
Anil Kumar
Kitchener
CA
Kapil Sakariya
Waterloo
CA
Peyman Servati
Waterloo
CA
Arokia Nathan
Waterloo
CA
Agent
Pearne & Gordon
Assignee
Ignis Innovation
CA
IPC
G09G 3/32
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