Patent Number: 8,791,887

Title: Method of compensating for capacitance of a programming line of an OLED display

Abstract: This invention relates to active matrix OLED (Organic Light Emitting Diode) displays, in particular to display panels with integrated negative capacitance circuits and to active capacitance compensation. We describe an active matrix OLED display comprising a glass panel bearing a plurality of lines of OLED pixels, each with an associated active matrix driver circuit having a programming connection for programming a brightness of the associated OLED, programming connections of a line of pixels being connected to a programming line of said display, and wherein said active matrix OLED display further comprises a plurality of capacitors on said glass panel, each having a first plate connected to an end of a respective said programming line and having a second plate for connecting to a negative capacitor circuit to compensate for a capacitance of said programming line.

Inventors: Smith; Euan (Longstanton, GB), Rankov; Aleksandra (Huntingdon, GB), Thompson; Barry (Menlo Park, CA)

Assignee: Cambridge Display Technology Limited

International Classification: G09G 3/32 (20060101)

Expiration Date: 7/29/12018