In this paper, a cost-effective organic light-emitting diode (OLED) display burn-in compensation method on a mobile system is proposed. The subpixel wise compensation map is estimated using the data-counting approach and is reallocated to multiunit regional map according to amount of burn-in details.The degraded luminance compensation is applied for the display driver integrated circuit (IC) without the additional external storage. With the optimized multiunit map, perceptual quality can be enhanced after compensation with limited internal memory. Experiment shows that the luminance uniformity of the degraded panel has been improved by 20% after proposed compensation with 1/16 memory space usage.
A 4Gbps/lane column driver is implemented in 1.8V 0.13-μm high-voltage CMOS process for 8K UHD 120Hz displays. The proposed column driver presents auto-calibrated 4Gbps receiver per lane to cover up to 8K UHD 120Hz 10bit display with two lanes and can drive 8K UHD panel larger than 85-inches. Measured results show that a 4Gbps/lane column driver with auto equalizer calibration technique to adaptively compensate wide variation of channel length, power supply and temperature simultaneously.
This paper presents a 14‐Gb/s dual‐mode receiver with MIPI D‐PHY and C‐PHY interfaces for mobile display drivers. To reduce size overhead from the dual‐mode interfaces, we propose the termination circuit that shares 50‐Ω terminations and common‐mode capacitors while maintaining a perfectly matched load balance. The proposed dual‐mode receiver can support 14‐Gb/s total bandwidth in each interface mode, resulting in broad compatibility with application processors. A mobile display driver using the proposed dual‐mode receiver is fabricated in a 28‐nm high‐voltage CMOS process and verified up to 3.5 Gb/s per lane in the D‐PHY mode and 2.2 Gs/s per trio in the C‐PHY.
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