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A Full p-Type Poly-Si TFT Shift Register for Active Matrix Displays

Published online by Cambridge University Press:  01 February 2011

Myoung-Hoon Jung ,
Hoon-Ju Chung ,
Young-Ju Park  and
Ohyun Kim
Myoung-Hoon Jung
Affiliation:
majent@postech.ac.kr, Pohang University of Science and Technology, Pohang, Korea, Republic of
Hoon-Ju Chung
Affiliation:
hjchung@kumoh.ac.kr, Kumoh National Institute of Technology, Gumi, Korea, Republic of
Young-Ju Park
Affiliation:
yjpark@postech.ac.kr, Pohang University of Science and Technology, Pohang, Korea, Republic of
Ohyun Kim
Affiliation:
ohkim@postech.ac.kr, Pohang University of Science and Technology, Pohang, Korea, Republic of
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Abstract

A new shift register using p-type poly-Si thin-film transistors (TFTs) for active matrix display is proposed. It utilizes only p-type TFTs to simplify the fabrication process, and provides time-shifted output signals with a voltage swing from VSS to VDD without signal-level loss. In the proposed shift register, output is structurally separated from carry and therefore has a high immunity to output signal distortion caused by output load capacitance. We also propose a new light emitting control method using this shift register for high image quality active-matrix organic light emitting diode (AMOLED) displays. The proposed shift register was verified by simulation and measurement.

Keywords

polycrystalthin filmdisplay
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1245: Symposium A – Amorphous and Polycrystalline Thin-Film Silicon Science and Technology-2010 , 2010 , 1245-A19-06
Copyright
Copyright © Materials Research Society 2010

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References

1 Ha, Y. M., “P-type technology for large size low temperature poly-Si TFT-LCDs,” in Proc. SID, 2000, pp. 1116–1119.Google Scholar
2 Jeon, J., Choo, K. S., Lee, W. K., Song, J. H., and Kim, H. G., “Integrated a-Si gate driver circuit for TFT-LCD panel,” in Proc. SID, 2004, pp. 10–13.Google Scholar
3 Ayres, J. R., Brotherton, S. D., McCulloch, D. J., and Trainor, M. J., “Analysis of drain field and hot carrier stability of poly-Si thin film transistors,” Jpn. J. Appl. Phys., vol.37, pp. 1801–1808, 1998.Google Scholar
4 Jung, S. H., Nam, W. J., Lee, J. H., Jeon, J. H., and Han, M. K., “A new low-power pMOS poly-Si inverter for AMDs,” IEEE Electron Device Lett., vol. 26, no. 1, pp. 23–25, Jan. 2005.Google Scholar
5 Jung, S. H., Shin, H. S., Lee, J. H., and Han, M. K., “An AMOLED pixel for the VT compensation of TFT and a p-type LTPS shift register by employing 1 phase clock signal,” in Proc. SID, 2005, pp. 300–303.Google Scholar
6 Nam, W. J., Lee, H. J., Shin, H. S., Park, S. G., and Han, M. K., “Low-voltage driven p-type polycrystalline silicon thin-film transistor integrated gate driver circuits for low-cost chip-on-glass panel,” Jpn. J. Appl. Phys., vol.45, pp. 4389–4391, 2006.Google Scholar
7 Choi, H. S., Choi, J. S., Hong, S. K., Kim, B. K., and Ha, Y. M., “LTPS technology for improving the performance of AMOLEDs,” in Proc. IMID, 2007, pp. 1781–1784.Google Scholar
8 Ono, S., Miwa, K., Maekawa, Y., and Tsujimura, T., “VT compensation circuit for AM OLED displays composed of two TFTs and one capacitor,” IEEE Trans. Electron Devices, vol. 54, no. 3, pp. 462–467, Mar. 2007.Google Scholar
9 Choi, S. M., Kwon, O. K., and Chung, H. K., “An improved voltage programmed pixel structure for large size and high resolution AM-OLED displays,” in Proc. SID, 2004, pp. 260–263.Google Scholar
10 Hong, Y., Kanicki, J., and Hattori, R., “Novel poly-Si TFT pixel electrode circuits and current programmed active-matrix driving methods for AM-OLELs,” in Proc. SID, 2002, pp. 618–621.Google Scholar
11 Hoppenbrouwers, J. J. L., Budzelaar, F. P. M., Cordes, C. N., Beek, W. H. M. van, Vossen, F. J., Hoevenaars, A. A. M., Boom, R. G. H., Vaart, N. C. van der, Fish, D. A., and Childs, M. J., “Polymer OLED television image quality,” in Proc. IDW, 2004, pp. 1257–1260.Google Scholar