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TWI268597B - Thin film transistor electrostatic protective circuit capable of providing normal function while gate insulation layer of component contained therein is malfunctioning - Google Patents

Thin film transistor electrostatic protective circuit capable of providing normal function while gate insulation layer of component contained therein is malfunctioning

Info

Publication number
TWI268597B
TWI268597B TW093114736A TW93114736A TWI268597B TW I268597 B TWI268597 B TW I268597B TW 093114736 A TW093114736 A TW 093114736A TW 93114736 A TW93114736 A TW 93114736A TW I268597 B TWI268597 B TW I268597B
Authority
TW
Taiwan
Prior art keywords
electrostatic protective
thin film
film transistor
protective circuit
insulation layer
Prior art date
Application number
TW093114736A
Other languages
Chinese (zh)
Other versions
TW200539419A (en
Inventor
Ja-Fu Tsai
Wen-Chun Wang
Original Assignee
Wintek Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wintek Corp filed Critical Wintek Corp
Priority to TW093114736A priority Critical patent/TWI268597B/en
Publication of TW200539419A publication Critical patent/TW200539419A/en
Application granted granted Critical
Publication of TWI268597B publication Critical patent/TWI268597B/en

Links

Landscapes

  • Semiconductor Integrated Circuits (AREA)
  • Thin Film Transistor (AREA)
  • Liquid Crystal (AREA)
  • Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)

Abstract

A thin film transistor (TFT) electrostatic protective circuit is installed between a scanning signal line or a data signal line and a common electrode (Vcom). Such an electrostatic protective circuit includes a positive electrostatic protective set and a negative electrostatic protective set. Furthermore, the positive and negative electrostatic protective sets are individually consisted of three TFFs. The most significant feature of the invention is that the positive and negative electrostatic protective sets can still operate normally and maintain their original ESD protection functions when the gate insulation layer of any one TFT is penetrated by an electrostatic voltage. As a result, the invented protective device has an increased ESD withstanding power.
TW093114736A 2004-05-21 2004-05-21 Thin film transistor electrostatic protective circuit capable of providing normal function while gate insulation layer of component contained therein is malfunctioning TWI268597B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW093114736A TWI268597B (en) 2004-05-21 2004-05-21 Thin film transistor electrostatic protective circuit capable of providing normal function while gate insulation layer of component contained therein is malfunctioning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW093114736A TWI268597B (en) 2004-05-21 2004-05-21 Thin film transistor electrostatic protective circuit capable of providing normal function while gate insulation layer of component contained therein is malfunctioning

Publications (2)

Publication Number Publication Date
TW200539419A TW200539419A (en) 2005-12-01
TWI268597B true TWI268597B (en) 2006-12-11

Family

ID=52349138

Family Applications (1)

Application Number Title Priority Date Filing Date
TW093114736A TWI268597B (en) 2004-05-21 2004-05-21 Thin film transistor electrostatic protective circuit capable of providing normal function while gate insulation layer of component contained therein is malfunctioning

Country Status (1)

Country Link
TW (1) TWI268597B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8179644B2 (en) 2008-01-09 2012-05-15 Chunghwa Picture Tubes, Ltd. Two-way electrostatic discharge protection circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8179644B2 (en) 2008-01-09 2012-05-15 Chunghwa Picture Tubes, Ltd. Two-way electrostatic discharge protection circuit

Also Published As

Publication number Publication date
TW200539419A (en) 2005-12-01

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees