Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Design of Charge Pumping Circuit for LCD Driver IC

LCD Driver IC용 Charge Pumping 회로 설계

  • Kwon, Yong-Jung (Dept. of Semiconductor Engineering, ChungBuk National University) ;
  • Kim, Hak-Yun (Dept. of Semiconductor Engineering, ChungBuk National University) ;
  • Seo, Sang-Jo (Dept. of Semiconductor Engineering, ChungBuk National University) ;
  • Choi, Ho-Yong (Dept. of Semiconductor Engineering, ChungBuk National University)
  • 권용중 (충북대학교 대학원 반도체공학과) ;
  • 김학윤 (충북대학교 대학원 반도체공학과) ;
  • 서상조 (충북대학교 대학원 반도체공학과) ;
  • 최호용 (충북대학교 대학원 반도체공학과)
  • Published : 2008.06.18
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Abstract

This paper presents a design of a charge pumping circuit for LCD Driver IC. The charge pumping circuit consists of a control block, a VCIOUT generating block, a DDVDH generating block, a VGH/VGL generating block, and VCL generating block. It generates various higher and lower voltage than supply voltage using external control input. Simulation results show that voltages of DDVDH, VGH, VGL, and VCL satisfy the target voltage, and the output DDVDH drives the output current 7mA.

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