DISPLAY DEVICE

PURPOSE:To optionally invert color by setting white color, black color reference data in a polarity inversion circuit, detecting white/black data in a detection part, instructing valid/invalid in an inversion instruction signal generation part and inverting color data. CONSTITUTION:Inputted data IN is transmitted to an inversion execution part 2 and a white/black detection part 5, and from the inversion execution part 2, output data OUT obtd. by inverting/non-inverting the inputted data IN according to an inversion execution signal RE is sent to an output part 3. In a reference data setting part 4, white/black reference data is set by information from a register 8 and sent to the white/black detection part 5, and whether the white/ black data or other color data is judged and sent to an inversion discrimination part 6, an inversion reference data RS is set from white reference data CW and black reference data CB and sent to the inversion execution part 2. In an inversion instruction part 7, an inversion instruction signal INV is set and sent to the inversion discrimination part 6, and the inversion instruction signal INV is made '0' when the inversion is valid, and is made '1' when the inversion is invalid. In the inversion discrimination part 6, valid/invalid is discriminated, and the inversion execution signal RE is sent to the execution part 2.