| 摘要 |
PROBLEM TO BE SOLVED: To provide an LED display device capable of displaying with LED display elements in excellent contrast and multi-colored variations. SOLUTION: This device is an LED display device 1 provided with a light- transmissive wiring board 2, plural LED display elements 3 arranged on the front side of the wiring board 2, and backlight 4 arranged behind the wiring board 2. In this case, the LED display elements 3 are composed of those emitting two of the three primaries and the back light emits light of the remaining color of the three primaries. |
