Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2005-11-14
2008-08-12
Tran, Thuy Vinh (Department: 2821)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C257S040000, C257S072000, C438S161000
Reexamination Certificate
active
07411572
ABSTRACT:
Embodiments of an organic electroluminescence display capable of preventing line mura generated due to manufacturing differences in driving transistors are disclosed. The manufacturing differences may be due to deviations of irradiated energy beam density generated from an excimer laser annealing process for crystallizing amorphous silicon into polycrystalline silicon. One embodiment of an organic electroluminescence display a plurality of pixel circuits arranged perpendicular to a laser scan direction for crystallization. Each pixel circuit comprises an organic light-emitting diode, and a driving transistor configured to supply current to the organic light-emitting diode. Each driving transistor comprises at least two channels formed therein, wherein the sums of lengths of the at least two channels in each driving transistor of the display are equal.
REFERENCES:
patent: 5953597 (1999-09-01), Kusumoto et al.
patent: 7005677 (2006-02-01), Park et al.
patent: 7061017 (2006-06-01), Ogata et al.
patent: 7224334 (2007-05-01), Choi et al.
patent: 7304639 (2007-12-01), Park et al.
Knobbe Martens Olson & Bear LLP
Samsung SDI & Co., Ltd.
Tran Thuy Vinh
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