Active-matrix sensor in AMLCD detecting liquid-crystal capacitance with LTPS-TFT technology

被引：3

作者：

Kanda, Eiji ^{[1
]}

Eguchi, Tsukasa ^{[1
]}

Hiyoshi, Yasunori ^{[1
]}

Chino, Taketo ^{[1
]}

Tsuchiya, Yasushi ^{[1
]}

Iwashita, Takahiro ^{[1
]}

Ozawa, Tokuro ^{[1
]}

Miyazawa, Takao ^{[1
]}

Matsumoto, Tomotaka ^{[1
]}

机构：

[1] Seiko Epson Corp, Display Dev Ctr, Fujimi, Nagano 3990293, Japan

来源：

JOURNAL OF THE SOCIETY FOR INFORMATION DISPLAY | 2009年 / 17卷 / 02期

关键词：

Low-temperature poly-Si TFT; touch panel; capacitive sensor; fringe-field switching;

D O I：

10.1889/JSID17.2.79

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

An active-matrix capacitive sensor for use in AMLCDs as an in-cell touch screen has been developed. Pixel sensor circuits are embedded in each pixel by using low-temperature polycrystalline-silicon (LTPS) TFT technology. It detects a change in the liquid-crystal capacitance when it is touched. It is thin, light weight, highly sensitive, and detects three or more touch events simultaneously.

引用

页码：79 / 85

页数：7

共 8 条

[1]

Abileah A., 2004, SID S DIG TECH PAPER, V35, P1544, DOI [DOI 10.1889/1.1821371, 10.1889/1.1821371]

[2]

BROWN C, 2007, ISSCC, P132

[3]

den Boer W., 2003, SID 03, V34, P1494

[4] Optical sensor embedded input display usable under high-ambient-light conditions [J].

Hayashi, Hirotaka ;

Nakamura, Takashi ;

Tada, Norio ;

Imai, Takayuki ;

Yoshida, Masahiro ;

Nakamura, Hiroki .

2007 SID INTERNATIONAL SYMPOSIUM, DIGEST OF TECHNICAL PAPERS, VOL XXXVIII, BOOKS I AND II, 2007, 38 :1105-1108

[5] Integrated active matrix capacitive sensors for touch panel LTPS-TFT LCDs [J].

Kanda, Eiji ;

Eguchi, Tsukasa ;

Hiyoshi, Yasunori ;

Chino, Taketo ;

Tsuchiya, Yasushi ;

Iwashita, Takahiro ;

Ozawa, Tokuro ;

Miyazawa, Takao ;

Matsumoto, Tomotaka .

2008 SID INTERNATIONAL SYMPOSIUM, DIGEST OF TECHNICAL PAPERS, VOL XXXIX, BOOKS I-III, 2008, 39 :834-837

[6] Hybrid touch screen panel integrated in TFT-LCD [J].

Lee, Joohyung ;

Park, Jong-Woung ;

Jung, Dong-Jin ;

Pak, Sangjin ;

Cho, Manseung ;

Uh, Keehan ;

Kim, Hyung-Guel .

2007 SID INTERNATIONAL SYMPOSIUM, DIGEST OF TECHNICAL PAPERS, VOL XXXVIII, BOOKS I AND II, 2007, 38 :1101-1104

[7] Incorporation of input function into displays using LTPS TFT technology [J].

Nakamura, T. ;

Hayashi, H. ;

Yoshida, M. ;

Tada, N. ;

Ishikawa, M. ;

Motai, T. ;

Nakamura, H. ;

Nishibe, T. .

JOURNAL OF THE SOCIETY FOR INFORMATION DISPLAY, 2006, 14 (04) :363-369

[8]

TADA N, 2004, P IDW 04, P349

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