LED display apparatus having a column and row controller

Details LED display apparatus having a column and row controller LED display apparatus having a column and row controller

2007-10-30

2011-10-25

Nguyen, Chanh (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S034000

Reexamination Certificate

active

08044898

ABSTRACT:
An LED display apparatus1in which at least multiple LEDs are serially-connected to a power circuit part having a constant current power source, each one of the LEDs has a switching element parallel-connected thereto, and a control circuit part is used to selectively turn on/off the switching elements to control the LEDs for a specific display, characterized by the fact that the apparatus comprises a display matrix circuit part9constituted by parallel-connecting to the power circuit part8multiple LED circuits7a, 7b, 7c. . . consisting of multiple LEDs2. . . and a single first switching element3a, 3b, 3c. . . serially-connected and second switching element4. . . each parallel-connected to one of the LEDs2. . . , and a control circuit part10turning on the first switching elements3a. . . for a given time period (Ts) in sequence and turning on/off a row La, Lb, Lc . . . of multiple second switching elements4. . . extending across the LED circuits7a. . . of the display matrix circuit part9in correspondence with the first switch3a. . . being turned on.

REFERENCES:
patent: 3796951 (1974-03-01), Joseph
patent: 5051729 (1991-09-01), Gray
patent: 5471267 (1995-11-01), Goto et al.
patent: 5629642 (1997-05-01), Yoshimura
patent: 6894610 (2005-05-01), Schubert et al.
patent: 6985124 (2006-01-01), Nogawa
patent: 7557802 (2009-07-01), Hayafuji et al.
patent: 2004/0085086 (2004-05-01), LeChevalier
patent: 2004/0233148 (2004-11-01), Tanghe et al.
patent: 2005/0231459 (2005-10-01), Furukawa
patent: 2006/0232219 (2006-10-01), Xu
patent: 2007/0147415 (2007-06-01), Marusca et al.
patent: 2007/0188425 (2007-08-01), Saccomanno
patent: 2007/0247415 (2007-10-01), Yasunaga
patent: 2007/0257623 (2007-11-01), Johnson et al.
patent: 2007/0279323 (2007-12-01), Park et al.
patent: 2008/0181794 (2008-07-01), Steinfels et al.
patent: 5-129665 (1993-05-01), None
patent: 5-131681 (1993-05-01), None
patent: 8-194448 (1996-07-01), None
patent: 2001-109433 (2001-04-01), None
patent: 9-8121 (2007-03-01), None
patent: 981211 (2007-03-01), None

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