US4392747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display device structure
Assignee: Hitachi Ltd
•
Filing: 1980-10-23
•
Granted: 1983-07-12
•
Expires: 2000-10-23
Abstract
Abstract A display device structure comprising a casing, a display panel placed in the casing, a transparent covering and vibrating plate member on the front side of the display panel and an actuator for the plate member. The covering and vibrating plate member is carried on the casing through an elastic member interposed between the peripheral portion of the plate member and the casing. By this arrangement the plate member is capable of effectively generating sound outward upon reception of vibrating force from the actuator.
Inventors
- 👤 Akio Kumada
- 👤 Takahiko Ihochi
- 👤 Makoto Homma
- 👤 Masashi Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:55
CPC Classifications
G; G10; G10K; G10K13/00; G04; G04G; G04G13/00; G04G13/02; G04G13/021
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
151 words
A display device structure comprising an electrically conductive casing; a display panel placed in the casing; a transparent covering and vibrating plate member having its peripheral portion carried on the casing and being on a front side of the display panel; a transparent piezoelectric plate and a pair of transparent electrodes sandwiching the piezoelectric plate, the piezoelectric plate and electrodes being secured to and integral with the covering and vibrating plate member so that mechanical force produced by the piezoelectric plate is effectively transmitted to the plate member, wherein an elastic and electrically conductive member is provided between the peripheral portion of the plate member and the casing; and a double layer including a frame-like blind layer and an electrically conductive frame-like layer, the frame-like blind layer being in contact with the peripheral portion of the plate member and the electrically conductive frame-like layer being in electrical contact with the casing.
Claim 2
Dependent Claim
151 words
A display device structure comprising an electrically conductive casing; a display panel placed in the casing; a transparent covering and vibrating plate member having its peripheral portion carried on the casing and being on a front side of the display panel; a transparent piezoelectric plate and a pair of transparent electrodes sandwiching the piezoelectric plate, the piezoelectric plate and electrodes being secured to and integral with the covering and vibrating plate member so that mechanical force produced by the piezoelectric plate is effectively transmitted to the plate member, wherein an elastic and electrically conductive member is provided between the peripheral portion of the plate member and the casing; and a double layer including a frame-like blind layer and an electrically conductive frame-like layer, the frame-like blind layer being in contact with the peripheral portion of the plate member and the electrically conductive frame-like layer being in electrical contact with the casing.
Claim 3
Dependent Claim
25 words
A structure according to claim 1, wherein the elastic and electrically conductive member is I-shaped as viewed in a plane widthwise of the plate member.
Claim 4
Dependent Claim
25 words
A structure according to claim 1, wherein the elastic and electrically conductive member is L-shaped as viewed in a plane widthwise of the plate member.
Claim 5
Dependent Claim
36 words
A structure according to claim 1, wherein the elastic and electrically conductive member includes two I-shaped elastic and electrically conductive pieces arranged in an L-shaped form as viewed in a plane widthwise of the plate member.
Claim 6
Dependent Claim
20 words
A structure according to claim 1, wherein the elastic and electrically conductive member is an elastic and electrically conductive adhesive.
Claim 7
Dependent Claim
80 words
A structure according to claim 1, further comprising a module having terminals arranged to be powered by an electric cell for driving at least one of the display panel and the piezoelectric plate and at least two contact members having elasticity and being electrically conductive, each of the contact members being in pressure engagement with some of the terminals of the module and the transparent electrodes of the peizoelectric plate for electrical connection between the module and the piezoelectric plate.
Claim 8
Dependent Claim
18 words
A structure according to claim 6, wherein each of the contact members includes an electrically conductive rubber member.
Claim 9
Dependent Claim
15 words
A structure according to claim 6, wherein each of the contact members includes a spring.
Claim 10
Dependent Claim
124 words
A display device structure comprising an electrically conductive casing, a display panel placed in the casing, a transparent covering and vibrating plate member having its peripheral portion carried on the casing and being on a front side of the display panel, and a transparent piezoelectric plate and a pair of transparent electrodes sandwiching the piezoelectric plate, the piezoelectric plate and electrodes being secured to and integral with the covering and vibrating plate member so that mechanical force produced by the piezoelectric plate is effectively transmitted to the plate member, wherein an elastic and electrically conductive packing member is provided between the peripheral portion of the plate member and the casing, said packing member electrically interconnecting one of said electrodes and said electrically conductive casing.
Claim 11
Dependent Claim
124 words
A display device structure comprising an electrically conductive casing, a display panel placed in the casing, a transparent covering and vibrating plate member having its peripheral portion carried on the casing and being on a front side of the display panel, and a transparent piezoelectric plate and a pair of transparent electrodes sandwiching the piezoelectric plate, the piezoelectric plate and electrodes being secured to and integral with the covering and vibrating plate member so that mechanical force produced by the piezoelectric plate is effectively transmitted to the plate member, wherein an elastic and electrically conductive packing member is provided between the peripheral portion of the plate member and the casing, said packing member electrically interconnecting one of said electrodes and said electrically conductive casing.
Claim 12
Dependent Claim
26 words
A structure according to claim 9, wherein the elastic and electrically conductive packing member is I-shaped as viewed in a plane widthwise of the plate member.
Claim 13
Dependent Claim
26 words
A structure according to claim 9, wherein the elastic and electrically conductive packing member is L-shaped as viewed in a plane widthwise of the plate member.
Claim 14
Dependent Claim
37 words
A structure according to claim 9, wherein the elastic and electrically conductive packing member includes two I-shaped elastic and electrically conductive pieces arranged in an L-shaped form as viewed in a plane widthwise of the plate member.
Claim 15
Dependent Claim
21 words
A structure according to claim 1, wherein the elastic and electrically conductive packing member is an elastic and electrically conductive adhesive.
References Cited (Backward Citations)
DE2215768A1
Cited
DE2247155A1
Cited
GB1359624A
Cited
DE2326079A1
Cited
DE2334153C2
Cited
US4004409A
Cited
DE2746818A1
Cited
US4271498A
Cited
JPS5497457A
Cited
US4258432A
Cited
DE3021597C2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-11 | 1987-01-10 | 1987-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-11 | 1991-01-10 | 1991-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-11 | 1995-01-10 | 1995-07-12 | $7700.00 | Window Closed / Lapsed |