| 摘要 |
PROBLEM TO BE SOLVED: To provide an LED display device capable of displaying a clear light emitting picture by increasing a gradation range even by binary signal control to LEDs for R, G, B. SOLUTION: In the LED display device wherein the LEDs 1, 2, 3 for R, B, G are used as one dot and are driven by a driver IC including switching elements 1a, 1b, 2a, 2b, 3a, 3b for switching on-off the LEDs 1, 2, 3 by signal inputs from a picture processing system, at least two or more switching elements are arranged and a plurality of resistors are arranged in parallel between the switching elements and the LEDs 1, 2, 3, and these resistors are made to differ in value.
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