Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2009-06-12
2011-11-01
Vo, Tuyet Thi (Department: 2821)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S082000, C345S076000, C345S090000, C345S204000
Reexamination Certificate
active
08049701
ABSTRACT:
A pixel capable of compensating for the threshold voltage of a driving transistor, the voltage drop of a first power source and degradation of an organic light emitting diode is provided. The pixel includes an organic light emitting diode; a second transistor (e.g., a driving transistor) coupled between the first power source and the organic light emitting diode to control the current supplied to the organic light emitting diode; a third transistor coupled between a first electrode of the second transistor and the first power source; a first transistor coupled between a gate electrode of the second transistor and a data line; a first capacitor coupled between the gate electrode and the first electrode of the second transistor; a second capacitor coupled between the first electrode of the second transistor and the first power source; and a compensation circuit coupled between the organic light emitting diode and the gate electrode of the second transistor for adjusting a voltage of the gate electrode of the second transistor in accordance with degradation of the organic light emitting diode.
REFERENCES:
patent: 2004/0252089 (2004-12-01), Ono et al.
patent: 2006/0097965 (2006-05-01), Deane et al.
patent: 2007/0091029 (2007-04-01), Uchino et al.
patent: 1 923 857 (2008-05-01), None
patent: 1 923 857 (2008-06-01), None
patent: 10-2005-0121379 (2005-12-01), None
patent: 10-2006-0024869 (2006-03-01), None
patent: 10-2006-0134405 (2006-12-01), None
SIPO Office action dated May 12, 2010, for corresponding Chinese Patent application 200910142448.6, with English translation, noting US Publication 2006/0097965 and EP 1923857, both previously filed in an IDS dated Nov. 9, 2009.
European Search Report dated Aug. 20, 2009, for corresponding European application 09162890.9, noting listed references in this IDS.
Christie Parker & Hale LLP
Samsung Mobile Display Co., Ltd.
Vo Tuyet Thi
LandOfFree
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