Patent US5148074A successfully refreshed from Google Patents.
US5148074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezoelectric device and related converting devices
Assignee: Seikosha KK
•
Filing: 1991-02-05
•
Granted: 1992-09-15
•
Expires: 2011-02-05
Abstract
Abstract A piezoelectric device includes a first electrode, a second electrode disposed in opposing, spaced relation to the first electrode, a ferroelectric liquid crystal interposed between the first and second electrodes, a first alignment layer formed between the first electrode and the ferroelectric liquid crystal, and a second alignment layer formed between the second electrode and the ferroelectric liquid crystal.
Inventors
- 👤 Masanori Fujita
- 👤 Shinichi Okamoto
- 👤 Hirokazu Ono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:05
CPC Classifications
H; H10; H10N; H10N30/00; H10N30/30; H10N30/302; H02; H02N; H02N2/00; H02N2/10; H02N2/16; H02N2/163; H02N2/0005; H02N2/001; H02N2/0045; H02N2/103; H10N30/20; H10N30/206; H10N30/80; H10N30/85; H10N30/857
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
88 words
A method for converting electric energy to mechanical energy comprising applying an AC voltage to a ferroelectric piezoelectric liquid crystal panel device comprising a first electrode; a second electrode disposed in opposing relation to said first electrode; a ferroelectric liquid crystal interposed between said first and second electrodes; and at least one alignment layer formed between said ferroelectric liquid crystal and at least one of said first electrode and said second electrode, said alignment layer being aligned, and deriving said mechanical energy from said liquid crystal panel device.
Claim 2
Independent Claim
88 words
A method for converting electric energy to mechanical energy comprising applying an AC voltage to a ferroelectric piezoelectric liquid crystal panel device comprising a first electrode; a second electrode disposed in opposing relation to said first electrode; a ferroelectric liquid crystal interposed between said first and second electrodes; and at least one alignment layer formed between said ferroelectric liquid crystal and at least one of said first electrode and said second electrode, said alignment layer being aligned, and deriving said mechanical energy from said liquid crystal panel device.
Claim 3
Independent Claim
91 words
A method for converting electric energy to mechanical energy comprising applying an AC voltage to a ferroelectric piezoelectric liquid crystal panel device comprising a first electrode; a second electrode disposed in opposing relation to said first electrode; a ferroelectric liquid crystal interposed between said first and second electrodes; a first alignment layer between said first electrode and said ferroelectric liquid crystal and a second alignment layer between said second electrode and said ferroelectric liquid crystal, said alignment layers being aligned, and deriving said mechanical energy from said liquid crystal panel device.
Claim 4
Independent Claim
91 words
A method for converting electric energy to mechanical energy comprising applying an AC voltage to a ferroelectric piezoelectric liquid crystal panel device comprising a first electrode; a second electrode disposed in opposing relation to said first electrode; a ferroelectric liquid crystal interposed between said first and second electrodes; a first alignment layer between said first electrode and said ferroelectric liquid crystal and a second alignment layer between said second electrode and said ferroelectric liquid crystal, said alignment layers being aligned, and deriving said mechanical energy from said liquid crystal panel device.
Claim 5
Independent Claim
85 words
A method for converting mechanical energy to electrical energy comprising applying mechanical energy to a ferroelectric piezoelectric liquid crystal panel device comprising a first electrode; a second electrode disposed in opposing relation to said first electrode; a ferroelectric liquid crystal interposed between said first and second electrodes; and at least one alignment layer formed between said ferroelectric liquid crystal and at least one of said first electrode and said second electrode, said alignment layer being homogeneously aligned, and deriving said electric energy from said electrodes.
Claim 6
Independent Claim
85 words
A method for converting mechanical energy to electrical energy comprising applying mechanical energy to a ferroelectric piezoelectric liquid crystal panel device comprising a first electrode; a second electrode disposed in opposing relation to said first electrode; a ferroelectric liquid crystal interposed between said first and second electrodes; and at least one alignment layer formed between said ferroelectric liquid crystal and at least one of said first electrode and said second electrode, said alignment layer being homogeneously aligned, and deriving said electric energy from said electrodes.
Claim 7
Independent Claim
87 words
A method for converting mechanical energy to electrical energy comprising applying mechanical energy to a ferroelectric piezoelectric liquid crystal panel device comprising a first electrode; a second electrode disposed in opposing relation to said first electrode; a ferroelectric liquid crystal interposed between said first and second electrodes; a first alignment layer between said first electrode and said ferroelectric liquid crystal and a second alignment layer between said second electrode and said ferroelectric liquid crystal, said alignment layers being homogeneously aligned, and detecting electrical energy between said electrodes.
Claim 8
Independent Claim
87 words
A method for converting mechanical energy to electrical energy comprising applying mechanical energy to a ferroelectric piezoelectric liquid crystal panel device comprising a first electrode; a second electrode disposed in opposing relation to said first electrode; a ferroelectric liquid crystal interposed between said first and second electrodes; a first alignment layer between said first electrode and said ferroelectric liquid crystal and a second alignment layer between said second electrode and said ferroelectric liquid crystal, said alignment layers being homogeneously aligned, and detecting electrical energy between said electrodes.
Claim 9
Independent Claim
115 words
A method for applying a pressure responsive electric voltage to an output circuit with a ferroelectric liquid crystal panel device having a first electrode; a second electrode disposed in opposing relation to said first electrode; a ferroelectric liquid crystal interposed between said first and second electrodes; a first alignment layer between said first electrode and said ferroelectric liquid crystal and a second alignment layer between said second electrode and said ferroelectric liquid crystal; said first alignment layer and said second alignment layer having alignments that are neither parallel nor anti-parallel with respect to one another; said method comprising connecting said output circuit between said first and second electrodes, and applying pressure to said panel device.
Claim 10
Independent Claim
115 words
A method for applying a pressure responsive electric voltage to an output circuit with a ferroelectric liquid crystal panel device having a first electrode; a second electrode disposed in opposing relation to said first electrode; a ferroelectric liquid crystal interposed between said first and second electrodes; a first alignment layer between said first electrode and said ferroelectric liquid crystal and a second alignment layer between said second electrode and said ferroelectric liquid crystal; said first alignment layer and said second alignment layer having alignments that are neither parallel nor anti-parallel with respect to one another; said method comprising connecting said output circuit between said first and second electrodes, and applying pressure to said panel device.
Claim 11
Independent Claim
137 words
A method for applying a pressure responsive electric voltage to an output circuit with a ferroelectric liquid crystal panel device having a first electrode; a second electrode disposed in opposing relation to said first electrode; a ferroelectric liquid crystal interposed between said first and second electrodes; at least one alignment layer formed between said ferroelectric liquid crystal and at least one of said first electrode and said second electrode, said alignment layer being aligned; and a first alignment layer between said first electrode and said ferroelectric liquid crystal and a second alignment layer between said second electrode and said ferroelectric liquid crystal, said first alignment layer and said second alignment layer being comprised of different materials; said method comprising connecting said electric output circuit between said first and second electrodes, and applying pressure to said panel device.
Claim 12
Independent Claim
137 words
A method for applying a pressure responsive electric voltage to an output circuit with a ferroelectric liquid crystal panel device having a first electrode; a second electrode disposed in opposing relation to said first electrode; a ferroelectric liquid crystal interposed between said first and second electrodes; at least one alignment layer formed between said ferroelectric liquid crystal and at least one of said first electrode and said second electrode, said alignment layer being aligned; and a first alignment layer between said first electrode and said ferroelectric liquid crystal and a second alignment layer between said second electrode and said ferroelectric liquid crystal, said first alignment layer and said second alignment layer being comprised of different materials; said method comprising connecting said electric output circuit between said first and second electrodes, and applying pressure to said panel device.
Claim 13
Independent Claim
149 words
A method for applying a pressure responsive electric voltage to an output circuit with a ferroelectric liquid crystal panel device having a first electrode; a second electrode disposed in opposing relation to said first electrode; a ferroelectric liquid crystal interposed between said first and second electrodes; at least one alignment layer formed between said ferroelectric liquid crystal and at least one of said first electrode and said second electrode, said alignment layer being homogeneously aligned, and further comprising a first alignment layer between said first electrode and said ferroelectric liquid crystal and a second alignment layer between said second electrode and said ferroelectric liquid crystal, said first alignment layer attracting spontaneous polarization of said ferroelectric liquid crystal, and said second alignment layer repulsing spontaneous polarization of said ferroelectric liquid crystal; said method comprising connecting said output circuit between said first and second electrodes, and applying pressure to said panel.
Claim 14
Independent Claim
149 words
A method for applying a pressure responsive electric voltage to an output circuit with a ferroelectric liquid crystal panel device having a first electrode; a second electrode disposed in opposing relation to said first electrode; a ferroelectric liquid crystal interposed between said first and second electrodes; at least one alignment layer formed between said ferroelectric liquid crystal and at least one of said first electrode and said second electrode, said alignment layer being homogeneously aligned, and further comprising a first alignment layer between said first electrode and said ferroelectric liquid crystal and a second alignment layer between said second electrode and said ferroelectric liquid crystal, said first alignment layer attracting spontaneous polarization of said ferroelectric liquid crystal, and said second alignment layer repulsing spontaneous polarization of said ferroelectric liquid crystal; said method comprising connecting said output circuit between said first and second electrodes, and applying pressure to said panel.
Claim 15
Independent Claim
108 words
A method for applying a pressure responsive voltage to a output circuit using an electric voltage ferroelectric liquid crystal panel device having a first electrode; a second electrode disposed in opposing relation to said first electrode; a ferroelectric liquid crystal interposed between said first and second electrodes; and at least one alignment layer formed between said ferroelectric liquid crystal and at least one of said first electrode and said second electrode, said alignment layer being homogeneously aligned, said alignment layer having a homogeneous alignment resulting from strong rubbing, said method comprising connecting said output circuit between said first and second electrodes, and applying pressure to said panel device.
Claim 16
Independent Claim
108 words
A method for applying a pressure responsive voltage to a output circuit using an electric voltage ferroelectric liquid crystal panel device having a first electrode; a second electrode disposed in opposing relation to said first electrode; a ferroelectric liquid crystal interposed between said first and second electrodes; and at least one alignment layer formed between said ferroelectric liquid crystal and at least one of said first electrode and said second electrode, said alignment layer being homogeneously aligned, said alignment layer having a homogeneous alignment resulting from strong rubbing, said method comprising connecting said output circuit between said first and second electrodes, and applying pressure to said panel device.
References Cited (Backward Citations)
US4394069A
Cited
US4634226A
Cited
US4634228A
Cited
US4664480A
Cited
US4792211A
Cited
US4796979A
Cited
US4869577A
Cited
US4879059A
Cited
US4882207A
Cited
US4875378A
Cited
US4878150A
Cited
US4812018A
Cited
US4900132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-15 | 1996-03-16 | 1996-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-15 | 2000-03-16 | 2000-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-15 | 2004-03-16 | 2004-09-15 | $7700.00 | Window Closed / Lapsed |