Gray Code-Based 10-Bit Source Driver for Large-Size OLED Display

Guo, Xiaoyu; Li, Hongge

doi:10.1109/tcsii.2021.3053555

Cited by 8 publications

(2 citation statements)

References 20 publications

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“…Using the current mirror to copy the bias current, the IB1 glitch can be further reduced. As the output glitch is reduced, the dynamic power consumption is also reduced [2].…”

Section: Proposed Interpolation Output Buffermentioning

confidence: 99%

A novel programmable wide swing buffer for OLED source driver

Zhang,

2024

J. Phys.: Conf. Ser.

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This paper presents the design of an output buffer with DAC functionality, which meets the requirements of small size, low power consumption, and high precision for OLED source driver chips. The two-stage DAC has a smaller area compared to traditional resistor string DACs, providing higher precision grayscale voltages that better meet the requirements of display drivers. The buffer utilizes a rail-to-rail input stage and Class AB output stage to achieve a wide input-output voltage range. Cascode Miller compensation is employed to improve stability, and a programmable tail current source with current steering DAC is used to realize 3-bit interpolation, saving overall chip area and power consumption. In the HLMC 55 nm CMOS process, the buffer has a rise time of 0.52 us and a fall time of 0.6 us for input voltages ranging from 0-1.2 V. The buffer occupies an area of 35×30 um2.

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“…Using the current mirror to copy the bias current, the IB1 glitch can be further reduced. As the output glitch is reduced, the dynamic power consumption is also reduced [2].…”

Section: Proposed Interpolation Output Buffermentioning

confidence: 99%

A novel programmable wide swing buffer for OLED source driver

Zhang,

2024

J. Phys.: Conf. Ser.

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“…The source channel area is decreasing due to the previous works for area‐efficiency source driver, 8–12 but the probability of defects is increasing due to the higher density of source driver required for high resolution. This paper proposes an on‐the‐fly self‐repair (OFSR) circuit that can be used to repair image defects caused by vertical line defects on the display, similar to the built‐in self‐repair scheme in the memory cell 13–15 .…”

Section: Introductionmentioning

confidence: 99%

An OLED display driver IC with high‐gain fast‐slew circuit and on‐the‐fly self‐repair technique for high‐resolution display

Jo,

Yu,

Kim

et al. 2024

J Soc Info Display

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This paper presents an OLED display driver IC with high‐gain fast‐slew (HGFS) and on‐the‐fly self‐repair (OFSR) circuits for a spatial resolution of WQHD and a frame rate of 120 Hz. The proposed HGFS circuit increases the slewing current of the unity‐gain amplifier of the source driver when the input voltage is largely changed, reducing the settling time of the source driver as the resolution and frame rate increase. To enhance image quality by correcting line defects, the OFSR circuit replaces a faulty channel with a spare dummy channel. The OLED display driver IC was manufactured using a 28‐nm high‐voltage process with 8 V/20 V transistors and has 2880 source drivers for WQHD display. The measurement results indicate a horizontal line time of 2.7 μs with a slew rate of 7.675 V/μs, supporting WQHD resolution and 120‐Hz frame rate. The displayed image demonstrates that the vertical line defect has disappeared with the use of OFSR.

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A 256-channel 11-bit OLED Source Driver IC with Unit Current Calibration

Mu,

Guo,

2023

2023 IEEE 15th International Conference on ASIC (ASICON)

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Gray Code-Based 10-Bit Source Driver for Large-Size OLED Display

Cited by 8 publications

References 20 publications

A novel programmable wide swing buffer for OLED source driver

A novel programmable wide swing buffer for OLED source driver

An OLED display driver IC with high‐gain fast‐slew circuit and on‐the‐fly self‐repair technique for high‐resolution display

A 256-channel 11-bit OLED Source Driver IC with Unit Current Calibration

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