Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2006-12-05
2006-12-05
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S077000, C345S084000
Reexamination Certificate
active
07145529
ABSTRACT:
This invention relates to a method for color correction in an organic electroluminescent device (1), having at least one pixel (6), comprising an electro-luminescent material layer (5), which is sandwiched between a first and a second electrode (2, 3), and constituting at least a first and a second light-emitting element (6R,6G), wherein said method comprises the steps of: inputting a data signal (S) comprising information to be displayed by said light-emitting elements (6R,6G), generating, in a correction means (10), a correction factor for each light-emitting element (6R,6G), said correction factor being based on a relationship between a color point wavelength shift (Δλ) and a measured shift in one of a voltage across at least one of said light-emitting elements (6R,6G) at a predetermined current (Is) and a current through at least one of said light-emitting elements (6R,6G), at a predetermined voltage (Vs), applying said correction factor on said data signal (S), and supplying the corrected data signal (S) to the light-emitting elements (6R,6G).The invention also relates to a drive means implementing the above-described method.
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patent: 6501230 (2002-12-01), Feldman
patent: 6617184 (2003-09-01), Bohler et al.
patent: 2003/0010892 (2003-01-01), Clark
patent: 2003/0053044 (2003-03-01), Popovic et al.
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patent: WO9945525 (1999-09-01), None
Liedenbaum Coen Theodorus Hubertus Fransiscus
Vulto Simone Irene Elisabeth
Hjerpe Richard
Koninklijke Philips Electronics , N.V.
Said Mansour M.
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