Bandgap Voltage Reference Circuit Design Technology Suitable for Driving Large OLED Display Panel

Moon, Jong Il; Cho, Sang Jun; Cho, Eou Sik; Nam, Chul; Kwon, Sang Jik

Bandgap Voltage Reference Circuit Design Technology Suitable for Driving Large OLED Display Panel

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대형 OLED 디스플레이 패널 구동에 적합한 밴드갭 레퍼런스 회로 설계 및 결과

Type: Academic journal

Author: Moon, Jong Il (가천대학교 전자공학과) Cho, Sang Jun (가천대학교 전자공학과) Cho, Eou Sik (가천대학교 전자공학과) Nam, Chul ([주]실리콘하모니) Kwon, Sang Jik (가천대학교 전자공학과)

Journal: The Korean society of semiconductor and Display Technology 반도체디스플레이기술학회지 반도체디스플레이기술학회지 제17권 제2호

Published: 2018.1

Pages: 53 - 56 (4page)

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Bandgap Voltage Reference Circuit Design Technology Suitable for Driving Large OLED Display Panel

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In this paper, a CMOS bandgap voltage reference that is not sensitive to changes in the external environment is presented. Large OLED display panels need high supply voltage. MOSFET devices with high voltage are sensitive to the output voltage due to the channel length modulation effect. The self-cascode circuit was applied to the bandgap reference circuit. Simulation results show that the maximum output voltage change of the basic circuit is 77mV when the supply voltage is changed from 10.5V to 13.5V, but the proposed circuit change is improved to 0.0422mV. The improved circuit has a low temperature coefficient of $9.1ppm/^{\circ}C$ when changing the temperature from $-40^{\circ}C$ to $140^{\circ}C$. Therefore, the proposed circuit can be used as a reference voltage source for circuits that require a high supply voltage.

#Bandgap Voltage Reference #Self-cascode #OLED Driving Circuit

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References (8)

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Leung K. N. / 2002 / A sub-1-V 15-ppm/℃CMOS bandgap voltage reference without requiring low threshold voltage device / IEEE J. Solid-State Circuits 37(4):526~529

Malcovati, P. / 2001 / Curvature-compensated BiCMOS bnadap with 1-V supply voltage / IEEE J. Solid-State Circuits 36(7):1076~1081

Banba, H. / 1999 / A CMOS bandgap voltage reference circuit with sub-1-V operation / IEEE J. Solid-State Circuits 34(5):670~674

Giustolisi, G. / 2003 / A low-voltage low-power voltage reference based on subthreshold MOSFETs / IEEE J. Solid-State Circuits 38(1):151~154

Yuki, N. / 2016 / Gate voltage dependence of channel length modulation for 14 nm FinFETs / IEEE International Meeting for Future of Electron Devices

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