A 10-bit Area-efficient Source Driver for Printed OLED Display

Guo, Xiaoyu; Li, Hongge

doi:10.1109/socc46988.2019.1570547708

Cited by 3 publications

(1 citation statement)

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“…The interpolation method of the tail current source meets the requirements of AMOLED for small size, low power consumption, and high precision. When two voltages VH and VL are output through the multiplexer, the remaining gray-scale voltages are interpolated between these two voltages [10]. In panel driving, the higher the precision of the output buffer's gray-scale voltage, the better the display performance.…”

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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Section: Proposed Interpolation Output Buffermentioning

confidence: 99%