| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to uniformly keep an emitted wavelength of LEDs forming the whole screen of a mosaic display. SOLUTION: Light emitting data are fed to an RDATA latch 13R, a GDATA latch 13G, and a BDATA latch 13B, and latched as R, G, B data for each picture element. An arithmetic processing part 14 performs calculations by the latched R, G, B data and chromaticity correction factors Cij written in a chromaticity correction factor register 16. The calculation result of the arithmetic processing part 14 are fed to a data memory 15 as corrected luminescence data and stored. From a brightness correction data memory 20, a brightness correction data is fed to a constant-current driver 18 according to a control signal supplied. The constant-current driver 18 drives an LED display 19 according to the corrected luminescence data and the brightness correction data. |
