US6768348B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sense amplifier and electronic apparatus using the same
Assignee: Semiconductor Energy Laboratory Co Ltd
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Filing: 2002-11-27
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Granted: 2004-07-27
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Expires: 2022-11-27
Abstract
Abstract A sense amplifier according to the present invention for detecting a potential difference of signals input to a first input terminal and a second input terminal, includes a first means for applying voltages corresponding to threshold voltages of first and second transistors to gate-source voltages of the first and second transistors, and a second means for transferring signals input to the first and second input terminals to gates of the first and second transistors. In this case, a threshold variation of the first and second transistors is corrected.
Inventors
- 👤 Yutaka Shionoiri
- 👤 Kiyoshi Kato
- 👤 Munehiro Azami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:31
CPC Classifications
G; G11; G11C; G11C7/00; G11C7/06; H; H03; H03F; H03F3/00; H03F3/45; H03F3/45071; H03F3/45076; H03F3/45179; G01; G01R; G01R19/00; G11C11/00; G11C11/21; G11C11/34; G11C11/40; G11C11/401; G11C11/4063; G11C11/407; G11C11/409; G11C11/4091; G11C11/41; G11C11/413; G11C7/062; H03F3/45183; H03F3/45188; G11C2207/00; G11C2207/06; G11C2207/063; H03F2203/00; H03F2203/45; H03F2203/45396; H03F2203/45506; H03F2203/45546; H03F2203/45551; H03F2203/45702; H03F2203/45726
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
453 words
A sense amplifier for detecting a potential difference of signals input to a first input terminal and a second input terminal, comprising: a first, second, third, fourth, fifth, sixth, seventh, eighth, and ninth switches; a first, second, third, and fourth capacitor, wherein a second terminal of the first capacitor is electrically connected to a first terminal of the sixth switch and a first terminal of the seventh switch, and a second terminal of the second capacitor is electrically connected to a first terminal of the eighth switch and a first terminal of the ninth switch; a first and a second power source; a first PMOS transistor comprising a source electrically connected to the first power source, a drain electrically connected to a first terminal of the first switch, and a gate electrically connected to the drain; a second PMOS transistor comprising a source electrically connected to the first power source, a drain electrically connected to a first terminal of the second switch, and a gate electrically connected to the drain of the first PMOS transistor; a first NMOS transistor comprising a gate electrically connected to a second terminal of the third switch, a first terminal of the first capacitor, and a first terminal of the second capacitor; a first NMOS transistor comprising a gate electrically connected to a second terminal of the third switch, a first terminal of the first capacitor, and a firm terminal of the second capacitor; a second NMOS transistor comprising a gate electrically connected to a second terminal of the fourth switch, a first terminal of the third capacitor and a first terminal of the fourth capacitor, wherein both sources of the first and second NMOS transistors are electrically connected to a first terminal of the fifth switch, a second terminal of the second capacitor and a second terminal of the fourth capacitor; and an output terminal electrically connected to the drain of the second PMOS transistor; wherein a second terminal of the first switch is electrically connected to a drain of a first NMOS transistor and a first terminal of the third switch, and a second terminal of the second switch is electrically connected to a drain of the second NMOS transistor and a fist terminal of the fourth switch, and wherein a second terminal of the fifth switch is electrically connected to the second power source, a second terminal of the sixth switch is electrically connected to the first input terminal, a second terminal of the seventh switch is electrically connected to the second power source, a second terminal of the eighth switch is electrically connected to the second input terminal, and a second terminal of the ninth switch is electrically connected to the second power source.
Claim 2
Dependent Claim
453 words
A sense amplifier for detecting a potential difference of signals input to a first input terminal and a second input terminal, comprising: a first, second, third, fourth, fifth, sixth, seventh, eighth, and ninth switches; a first, second, third, and fourth capacitor, wherein a second terminal of the first capacitor is electrically connected to a first terminal of the sixth switch and a first terminal of the seventh switch, and a second terminal of the second capacitor is electrically connected to a first terminal of the eighth switch and a first terminal of the ninth switch; a first and a second power source; a first PMOS transistor comprising a source electrically connected to the first power source, a drain electrically connected to a first terminal of the first switch, and a gate electrically connected to the drain; a second PMOS transistor comprising a source electrically connected to the first power source, a drain electrically connected to a first terminal of the second switch, and a gate electrically connected to the drain of the first PMOS transistor; a first NMOS transistor comprising a gate electrically connected to a second terminal of the third switch, a first terminal of the first capacitor, and a first terminal of the second capacitor; a first NMOS transistor comprising a gate electrically connected to a second terminal of the third switch, a first terminal of the first capacitor, and a firm terminal of the second capacitor; a second NMOS transistor comprising a gate electrically connected to a second terminal of the fourth switch, a first terminal of the third capacitor and a first terminal of the fourth capacitor, wherein both sources of the first and second NMOS transistors are electrically connected to a first terminal of the fifth switch, a second terminal of the second capacitor and a second terminal of the fourth capacitor; and an output terminal electrically connected to the drain of the second PMOS transistor; wherein a second terminal of the first switch is electrically connected to a drain of a first NMOS transistor and a first terminal of the third switch, and a second terminal of the second switch is electrically connected to a drain of the second NMOS transistor and a fist terminal of the fourth switch, and wherein a second terminal of the fifth switch is electrically connected to the second power source, a second terminal of the sixth switch is electrically connected to the first input terminal, a second terminal of the seventh switch is electrically connected to the second power source, a second terminal of the eighth switch is electrically connected to the second input terminal, and a second terminal of the ninth switch is electrically connected to the second power source.
Claim 3
Dependent Claim
19 words
A sense amplifier according to claim 1 , wherein the sense amplifier is constructed by a thin film transistor.
Claim 4
Dependent Claim
26 words
A same amplifier according to claim 1 , wherein the sense amplifier is constructed by a thin film transistor and integrated into an image display apparatus.
Claim 5
Dependent Claim
34 words
A sense amplifier according to claim 2 , wherein the thin film transistor comprises a semiconductor film functioning as a semiconductor active layer, and the semiconductor film is crystallized by continuous wave laser light.
Claim 6
Dependent Claim
34 words
A sense amplifier according to claim 3 , wherein the thin film transistor comprises a semiconductor film functioning as a semiconductor active layer, and the semiconductor film is crystallized by continuous wave laser light.
Claim 7
Dependent Claim
56 words
An electronic apparatus comprising the sense amplifier according to claim 1 , wherein the electronic apparatus is selected from the group consisting of a cellular phone, a video camera, a mobile computer, a head mounted display, a television, a portable electronic book, a personal computer, a player, a digital camera, and a one-eyed head mounted display.
Claim 8
Dependent Claim
279 words
A sense amplifier for detecting a potential difference of signals input to a first input terminal and a second input terminal, comprising: a first and a second power source; a first, second, third, fourth, and fifth switches, wherein a second terminal of the fifth switch is electrically connected to the second power source; a first, second, third, and fourth capacitor, wherein a second terminal of the first capacitor is electrically connected to the first input terminal, and a second terminal of the second capacitor is electrically connected to the second input terminal; a first PMOS transistor comprising a source electrically connected to the first power source, a drain electrically connected to a first terminal of the first switch, and a gate electrically connected to the drain; a second PMOS transistor comprising a source electrically connected to the first power source, a drain electrically connected to a first terminal of the second switch, and a gate electrically connected to the drain of the first PMOS transistor; a first NMOS transistor comprising a gate electrically connected to a second terminal of the third switch, a first terminal of the first capacitor, and a first terminal of the second capacitor; a second NMOS transistor comprising a gate electrically connected to a second terminal of the fourth switch, a first terminal of the third capacitor and a first terminal of the fourth capacitor, wherein both sources of the first and second NMOS transistors are electrically connected to a first terminal of the fifth switch, a second terminal of the second capacitor and a second terminal of the fourth capacitor; and an output terminal electrically connected to a drain of the second PMOS transistor.
Claim 9
Dependent Claim
279 words
A sense amplifier for detecting a potential difference of signals input to a first input terminal and a second input terminal, comprising: a first and a second power source; a first, second, third, fourth, and fifth switches, wherein a second terminal of the fifth switch is electrically connected to the second power source; a first, second, third, and fourth capacitor, wherein a second terminal of the first capacitor is electrically connected to the first input terminal, and a second terminal of the second capacitor is electrically connected to the second input terminal; a first PMOS transistor comprising a source electrically connected to the first power source, a drain electrically connected to a first terminal of the first switch, and a gate electrically connected to the drain; a second PMOS transistor comprising a source electrically connected to the first power source, a drain electrically connected to a first terminal of the second switch, and a gate electrically connected to the drain of the first PMOS transistor; a first NMOS transistor comprising a gate electrically connected to a second terminal of the third switch, a first terminal of the first capacitor, and a first terminal of the second capacitor; a second NMOS transistor comprising a gate electrically connected to a second terminal of the fourth switch, a first terminal of the third capacitor and a first terminal of the fourth capacitor, wherein both sources of the first and second NMOS transistors are electrically connected to a first terminal of the fifth switch, a second terminal of the second capacitor and a second terminal of the fourth capacitor; and an output terminal electrically connected to a drain of the second PMOS transistor.
Claim 10
Dependent Claim
19 words
A sense amplifier according to claim 7 , wherein the sense amplifier is constructed by a thin film transistor.
Claim 11
Dependent Claim
26 words
A sense amplifier according to claim 7 , wherein the sense amplifier is constructed by a thin film transistor and integrated into an image display apparatus.
Claim 12
Dependent Claim
34 words
A sense amplifier according to claim 8 , wherein the thin film transistor comprises a semiconductor film functioning as a semiconductor active layer, and the semiconductor film is crystallized by continuous wave laser light.
Claim 13
Dependent Claim
34 words
A sense amplifier according to claim 9 , wherein the thin film transistor comprises a semiconductor film functioning as a semiconductor active layer, and the semiconductor film is crystallized by continuous wave laser light.
Claim 14
Dependent Claim
56 words
An electronic apparatus comprising the sense amplifier according to claim 7 , wherein the electronic apparatus is selected from the group consisting of a cellular phone, a video camera, a mobile computer, a head mounted display, a television, a portable electronic book, a personal computer, a player, a digital camera, and a one-eyed head mounted display.
References Cited (Backward Citations)
US5179301A
Cited
US5643826A
Cited
JPH07183540A
Cited
US5847601A
Cited
WO1998048403A1
Cited
US6087897A
Cited
US6566933B1
Cited
US6586990B2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2007-07-27 | 2008-01-26 | 2008-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-07-27 | 2012-01-26 | 2012-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-07-27 | 2016-01-26 | 2016-07-27 | $7700.00 | Window Closed / Lapsed |