JP6566316B2 - 保護回路および電子機器 - Google Patents
保護回路および電子機器 Download PDFInfo
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- JP6566316B2 JP6566316B2 JP2015208884A JP2015208884A JP6566316B2 JP 6566316 B2 JP6566316 B2 JP 6566316B2 JP 2015208884 A JP2015208884 A JP 2015208884A JP 2015208884 A JP2015208884 A JP 2015208884A JP 6566316 B2 JP6566316 B2 JP 6566316B2
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- 239000010409 thin film Substances 0.000 claims description 278
- 239000004065 semiconductor Substances 0.000 claims description 47
- 239000002184 metal Substances 0.000 claims description 16
- 239000010408 film Substances 0.000 claims description 8
- 230000004048 modification Effects 0.000 description 15
- 238000012986 modification Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 14
- 230000005611 electricity Effects 0.000 description 6
- 230000003068 static effect Effects 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 5
- 230000009977 dual effect Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/045—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage adapted to a particular application and not provided for elsewhere
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/0203—Particular design considerations for integrated circuits
- H01L27/0248—Particular design considerations for integrated circuits for electrical or thermal protection, e.g. electrostatic discharge [ESD] protection
- H01L27/0251—Particular design considerations for integrated circuits for electrical or thermal protection, e.g. electrostatic discharge [ESD] protection for MOS devices
- H01L27/0266—Particular design considerations for integrated circuits for electrical or thermal protection, e.g. electrostatic discharge [ESD] protection for MOS devices using field effect transistors as protective elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/124—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
- H01L29/7869—Thin film transistors, i.e. transistors with a channel being at least partly a thin film having a semiconductor body comprising an oxide semiconductor material, e.g. zinc oxide, copper aluminium oxide, cadmium stannate
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/025—Reduction of instantaneous peaks of current
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/04—Display protection
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Theoretical Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Semiconductor Integrated Circuits (AREA)
- Thin Film Transistor (AREA)
- Liquid Crystal (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Description
以下、第1実施形態について説明する。
以下、第2実施形態について説明する。
以下、第3実施形態について説明する。
1B 保護回路
1C 保護回路
3 第1配線
4 第2配線
5 制御回路
6 印加回路
Tr1 薄膜トランジスタ(第1薄膜トランジスタ)
Tr2 薄膜トランジスタ(第2薄膜トランジスタ)
Tr3 薄膜トランジスタ(第3薄膜トランジスタ)
Tr4 薄膜トランジスタ(第4薄膜トランジスタ)
Tr5 薄膜トランジスタ(第5薄膜トランジスタ)
Tr6 薄膜トランジスタ(第6薄膜トランジスタ)
Tr1g ゲート電極(ゲート)
Tr4g ゲート電極(ゲート)
11A 接続点
11B 接続点
Tr2bg ボトムゲート電極(第1ゲート)
Tr3bg ボトムゲート電極(第1ゲート)
Tr5bg ボトムゲート電極(第1ゲート)
Tr6bg ボトムゲート電極(第1ゲート)
Tr2tg トップゲート電極(第2ゲート)
Tr3tg トップゲート電極(第2ゲート)
Tr5tg トップゲート電極(第2ゲート)
Tr6tg トップゲート電極(第2ゲート)
22 酸化物半導体層
Claims (9)
- 第1配線と第2配線との間における電流を制御する制御回路と、
前記制御回路に電圧を印加する印加回路とを有し、
前記制御回路は、前記電流を制御する第1薄膜トランジスタを有し、
前記印加回路は、直列に接続される、第2薄膜トランジスタと第3薄膜トランジスタとを有し、
前記第2薄膜トランジスタと前記第3薄膜トランジスタとは、第1ゲートと第2ゲートとを有し、
前記第2薄膜トランジスタの前記第1ゲートは、前記第1配線に接続され、
前記第3薄膜トランジスタの前記第1ゲートは、前記第2薄膜トランジスタと前記第3薄膜トランジスタとの接続点に接続され、
前記第2薄膜トランジスタおよび前記第3薄膜トランジスタの前記第2ゲートは、前記第2配線に接続され、
前記印加回路は、前記接続点の電圧を前記第1薄膜トランジスタのゲートに印加する
保護回路。 - 前記第1薄膜トランジスタ、前記第2薄膜トランジスタ、および前記第3薄膜トランジスタは、酸化物半導体層を備える請求項1に記載の保護回路。
- 前記第1ゲートは、前記酸化物半導体層の第1の面側に設けられ、
前記第2ゲートは、前記酸化物半導体層の前記第1の面と対向する第2の面側に設けられている請求項2に記載の保護回路。 - 前記制御回路は、前記第1薄膜トランジスタと並列に接続された第4薄膜トランジスタを更に有し、
前記印加回路は、直列に接続される、第5薄膜トランジスタと第6薄膜トランジスタとを更に有し、
前記第5薄膜トランジスタと前記第6薄膜トランジスタとは、第1ゲートと第2ゲートとを有し、
前記第5薄膜トランジスタの前記第1ゲートは、前記第2配線に接続され、
前記第6薄膜トランジスタの前記第1ゲートは、前記第5薄膜トランジスタと前記第6薄膜トランジスタとの接続点に接続され、
前記第5薄膜トランジスタおよび前記第6薄膜トランジスタの前記第2ゲートは、前記第1配線に接続され、
前記印加回路は、前記第5薄膜トランジスタと前記第6薄膜トランジスタとの前記接続点の電圧を前記第4薄膜トランジスタのゲートに印加する
請求項1から請求項3のいずれかに記載の保護回路。 - 前記第1薄膜トランジスタは、前記第1配線が接続される第1金属端子に対して前記ゲートがオフセットされたオフセットゲート構造を有しており、
前記第4薄膜トランジスタは、前記第2配線が接続される第2金属端子に対して前記ゲートがオフセットされたオフセットゲート構造を有している請求項4に記載の保護回路。 - 前記第1薄膜トランジスタは、前記第1金属端子と共に第3金属端子と、前記ゲートの上面に絶縁膜を介して配置された半導体層とを有し、
前記第1金属端子は、前記半導体層の上面において前記第1配線側の第1領域に接触し、
前記第3金属端子は、前記半導体層の上面において前記第1領域とは逆側の第2領域に接触し、
前記ゲートは、前記半導体層の前記第1領域から前記第2領域の方向にオフセットするように、前記第1領域から離れて配置され、
前記第4薄膜トランジスタは、前記第2金属端子と共に第4金属端子と、前記ゲートの上面に絶縁膜を介して配置された半導体層とを有し、
前記第2金属端子は、前記半導体層の上面において前記第2配線側の第1領域に接触し、
前記第4金属端子は、前記半導体層の上面において前記第1領域とは逆側の第2領域に接触し、
前記ゲートは、前記半導体層の前記第1領域から前記第2領域の方向にオフセットするように、前記第1領域から離れて配置される
請求項5に記載の保護回路。 - 前記制御回路は、前記第1薄膜トランジスタと直列に接続された第4薄膜トランジスタを更に有し、
前記印加回路は、直列に接続される、第5薄膜トランジスタと第6薄膜トランジスタとを有し、
前記第5薄膜トランジスタと前記第6薄膜トランジスタとは、第1ゲートと第2ゲートとを有し、
前記第5薄膜トランジスタの前記第1ゲートは、前記第2配線に接続され、
前記第6薄膜トランジスタの前記第1ゲートは、前記第5薄膜トランジスタと前記第6薄膜トランジスタとの接続点に接続され、
前記第5薄膜トランジスタおよび前記第6薄膜トランジスタの前記第2ゲートは、前記第1配線に接続され、
前記印加回路は、前記第5薄膜トランジスタと前記第6薄膜トランジスタとの前記接続点の電圧を前記第4薄膜トランジスタのゲートに印加する
請求項1から請求項3のいずれかに記載の保護回路。 - 前記第1薄膜トランジスタは、前記第1配線から前記第2配線に流れる電流を制御し、
前記第4薄膜トランジスタは、前記第2配線から前記第1配線に流れる電流を制御する請求項4から請求項7のいずれかに記載の保護回路。 - 請求項1から請求項8のいずれかに記載の保護回路を備える電子機器。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015208884A JP6566316B2 (ja) | 2015-10-23 | 2015-10-23 | 保護回路および電子機器 |
CN201610862824.9A CN106960663B (zh) | 2015-10-23 | 2016-09-28 | 保护电路及电子设备 |
US15/299,524 US10291021B2 (en) | 2015-10-23 | 2016-10-21 | Protection circuit and electronic device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2015208884A JP6566316B2 (ja) | 2015-10-23 | 2015-10-23 | 保護回路および電子機器 |
Publications (2)
Publication Number | Publication Date |
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JP2017084868A JP2017084868A (ja) | 2017-05-18 |
JP6566316B2 true JP6566316B2 (ja) | 2019-08-28 |
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JP2015208884A Active JP6566316B2 (ja) | 2015-10-23 | 2015-10-23 | 保護回路および電子機器 |
Country Status (3)
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US (1) | US10291021B2 (ja) |
JP (1) | JP6566316B2 (ja) |
CN (1) | CN106960663B (ja) |
Cited By (1)
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US11855617B2 (en) | 2020-07-02 | 2023-12-26 | Kabushiki Kaisha Toshiba | Electronic circuit and electronic apparatus |
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2015
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US11855617B2 (en) | 2020-07-02 | 2023-12-26 | Kabushiki Kaisha Toshiba | Electronic circuit and electronic apparatus |
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US20170117705A1 (en) | 2017-04-27 |
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CN106960663A (zh) | 2017-07-18 |
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