New gate driver circuit using pre-charge structure for active-matrix LCDs equipped with in-cell touch structure

Chia Lun Lee, Chia En Wu, Ching En Lee, Chih Lung Lin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This work presents a hydrogenated amorphous silicon (a-Si:H) gate driver circuit for active-matrix liquid crystal displays (AMLCDs) equipped with in-cell touch structure. The display operation can be paused several times in a frame with the horizontal blank driving method to increase the touch reporting rate. Moreover, the pre-charge structure is utilized to reduce the threshold voltage (VTH) shift of driving TFT during touch sensing operation. Simulation results confirm that the proposed gate driver circuit can generate reliable output waveforms after touch sensing period (200 μs) at 85 °C. The rising time and falling time are respectively maintained at 2.73 μs and 1.92 μs, demonstrating the feasibility of proposed circuit appling to AMLCDs equipped with in-cell touch structure.

Original languageEnglish
Title of host publicationAM-FPD 2017 - 24th International Workshop on Active-Matrix Flatpanel Displays and Devices
Subtitle of host publicationTFT Technologies and FPD Materials, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages151-154
Number of pages4
ISBN (Electronic)9784990875336
Publication statusPublished - 2017 Aug 8
Event24th International Workshop on Active-Matrix Flatpanel Displays and Devices, AM-FPD 2017 - Kyoto, Japan
Duration: 2017 Jul 42017 Jul 7

Publication series

NameAM-FPD 2017 - 24th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, Proceedings

Other

Other24th International Workshop on Active-Matrix Flatpanel Displays and Devices, AM-FPD 2017
CountryJapan
CityKyoto
Period17-07-0417-07-07

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Computational Theory and Mathematics

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  • Cite this

    Lee, C. L., Wu, C. E., Lee, C. E., & Lin, C. L. (2017). New gate driver circuit using pre-charge structure for active-matrix LCDs equipped with in-cell touch structure. In AM-FPD 2017 - 24th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, Proceedings (pp. 151-154). [8006105] (AM-FPD 2017 - 24th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, Proceedings). Institute of Electrical and Electronics Engineers Inc..