An improved differential signaling scheme for the chip-on-glass application of TFT-LCD

Hyun Kyu Jeon, Kwang Il Oh, Yong Hwan Moon, Jun Ho Kim, Jung Hwan Choi, Seok Jae Park, Joon Ho Na, Jae Ryun Shim, Heong Seog Oh, Dae Seong Kim, Dae Keun Han, Jin Sung Kim, Sung Cheol Ha, Koo Won Kang, Hoe Ho Lee, Gun Woo Do, Kyoung Tae Moon, Jin Kyu Kim, Hyun Chul Choi, Lee Sup Kim

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

Abstract

An improved signaling scheme for the intra-panel interface for the chip-on-glass (COG) application is proposed. The proposed signaling scheme adopts a transmitter with the current-mode driver with shunt termination for an impedance matching on the transmitter and a receiver without termination to eliminate the multiple reflections on the transmitter. It obtains good signal quality on the receiver without additional current consumption. The transmitter for the proposed signaling scheme adopts the current-mode driver with shunt termination instead of the voltage-mode driver with series termination resistor for minimizing the effect caused by the process dependency of the circuitry in the transmitter. The receiver for the proposed signaling scheme is equipped with the loss compensator to equalize the channel loss caused by the highly resistive signal line-on-glass (LOG) and low channel bandwidth due to open termination on the receiver. The proposed signaling scheme is verified with 9.7-inch XGA (1024RGBx768) resolution TFT-LCD module for tablet computer. The proposed signaling scheme achieves the low electromagnetic near-field radiation from the signal lines by acquiring the good signal integrity on the transmission channel.

Original languageEnglish
Title of host publication49th Annual SID Symposium, Seminar, and Exhibition 2011, Display Week 2011
Pages555-558
Number of pages4
Publication statusPublished - 2011
Externally publishedYes
Event49th Annual SID Symposium, Seminar, and Exhibition 2011, Display Week 2011 - Los Angeles, CA, United States
Duration: 2011 May 152011 May 20

Publication series

Name49th Annual SID Symposium, Seminar, and Exhibition 2011, Display Week 2011
Volume1

Other

Other49th Annual SID Symposium, Seminar, and Exhibition 2011, Display Week 2011
Country/TerritoryUnited States
CityLos Angeles, CA
Period11/5/1511/5/20

ASJC Scopus subject areas

  • Hardware and Architecture

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