ST7781
16. Gamma Correction
ST7781 incorporate the γ- correction function to display 262,244 colors for the LCD panel. Theγ-correction is performed
with 3 groups of registers determining eight reference grayscale levels, which are gradient adjustment, amplitude
adjustment and fine- adjustment registers for positive and negative polarities, to make ST7781 available with liquid crystal
panels of various characteristics.
Fig.16.1 Grayscale Voltage Generation
Ver. 1.7
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