发明申请
US20080252574A1 LED display apparatus 有权
LED显示装置

LED display apparatus
摘要:
An LED display apparatus 1 in 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 part 9 constituted by parallel-connecting to the power circuit part 8 multiple LED circuits 7a, 7b, 7c . . . consisting of multiple LEDs 2 . . . and a single first switching element 3a, 3b, 3c . . . serially-connected and second switching element 4 . . . each parallel-connected to one of the LEDs 2 . . . , and a control circuit part 10 turning on the first switching elements 3a . . . for a given time period (Ts) in sequence and turning on/off a row La, Lb, Lc . . . of multiple second switching elements 4 . . . extending across the LED circuits 7a . . . of the display matrix circuit part 9 in correspondence with the first switch 3a . . . being turned on.
公开/授权文献
信息查询
0/0