A display driving module based on the Field Programmable Gate Array(FPGA) with LCD driver ICs was designed by the research of the 17.8 cm(7 in) AMOLED. The program is designed with Verilog HDL. By studying the characteristics of OLED display
the LCD driver ICs is chosen to fit it. A method connecting screen with ICs is present. Through using double data-driver and changing the polarity of the ICs
the problem that dot inversion of LCD Driver ICs is not matching AMOLED is resolved
and the brightness is doubled. For the data driver IC can only receive 6 bit/pixel data
but lost 2 bit data
this paper introduced the digital halftone technique. Using dynamic Bayer dithering algorithm on the low 2-bit input data to compare
and the treatment results is fed back to the high 6-bit data. Thus the output image quality is improved.
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references
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Baek J H, Lee M H, Lee J H, et al. A current-mode display driver IC using sample-and-hold scheme for QVGA full-color AMOLED displays [J].Solid-State Circuits, 2006,41(12):2974-2982.