US5579036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Touch screen device and shielding bracket therefor
Assignee: NCR Voyix Corp
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Filing: 1994-04-28
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Granted: 1996-11-26
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Expires: 2014-04-28
Abstract
Abstract A bracket for shielding a capacitive touch screen from external noise arising from stray capacitance comprises upper and lower complementary rectangular conductive metal shield elements which are joined together inside a housing with a transparent touch screen retained therebetween. The upper shield element is provided with a large central aperture so that the touch screen is accessible to a user. The lower shield element is also provided with a large central aperture to enable a display, such as an LCD, to be viewed through the transparent touch screen. The display is secured to the lower shield element with an insulating member interposed between the display and the lower shield element. The shielding bracket provides a full shield for the upper, lower and edge surfaces of the touch screen to prevent the capacitance of a hand resting upon the housing from interfering with the touch screen.
Inventors
- 👤 Joseph W. Yates, IV
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:19
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/041; G06F3/044
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
132 words
A capacitive touch screen shield, comprising: a first shield element of rigid conductive material, having an upper surface and a lower surface, also having a central opening through which a touch screen positioned beneath the shield element is accessible, and having a peripheral portion which extends past the outer edges of the touch screen; and a second shield element of rigid conductive material which is located beneath the touch screen and supports the touch screen, the second shield element including an upturned portion which shields the edges of the touch screen, the second shield element having a flange portion extending outwardly of the upturned portion in a plane parallel to a plane through the first shield element for securing the second shield element to the lower surface of the first shield element.
Claim 2
Dependent Claim
132 words
A capacitive touch screen shield, comprising: a first shield element of rigid conductive material, having an upper surface and a lower surface, also having a central opening through which a touch screen positioned beneath the shield element is accessible, and having a peripheral portion which extends past the outer edges of the touch screen; and a second shield element of rigid conductive material which is located beneath the touch screen and supports the touch screen, the second shield element including an upturned portion which shields the edges of the touch screen, the second shield element having a flange portion extending outwardly of the upturned portion in a plane parallel to a plane through the first shield element for securing the second shield element to the lower surface of the first shield element.
Claim 3
Dependent Claim
21 words
The capacitive touch screen shield of claim 1, in which the first and second shield elements are generally rectangular in configuration.
Claim 4
Dependent Claim
18 words
The capacitive touch screen shield of claim 1, in which the second shield element has a central opening.
Claim 5
Dependent Claim
24 words
The capacitive touch screen shield of claim 3, in which said second shield element includes at least one mounting device for mounting a display.
Claim 6
Dependent Claim
18 words
The capacitive touch screen shield of claim 1, in which the first and second shield elements are aluminum.
Claim 7
Dependent Claim
18 words
The capacitive touch screen shield of claim 1, in which the first and second shield elements are steel.
Claim 8
Dependent Claim
21 words
The capacitive touch screen shield of claim 1, in which the first and second shield elements have the same external dimensions.
Claim 9
Dependent Claim
24 words
The capacitive touch screen shield of claim 3, in which the central openings of the first and second shield elements have the same dimensions.
Claim 10
Dependent Claim
26 words
The capacitive touch screen shield of claim 1, in which the second shield element is secured to the first shield element by a plurality of fasteners.
Claim 11
Dependent Claim
24 words
The capacitive touch screen shield of claim 9, in which said fasteners comprise screws which engage apertures in the first and second shield elements.
Claim 12
Dependent Claim
160 words
A touch screen device, comprising: a top shield of conductive material of generally rectangular configuration, having an upper surface and a lower surface, and also having a central opening through which a touch screen positioned beneath the top shield is accessible; a touch screen holder shield of conductive material having an upper surface and a lower surface, also having an indented portion for receiving and retaining a touch screen and a flange portion extending outwardly of the indented portion and in a plane defined by said upper surface, and a central opening in the indented portion through which a display positioned below the indented portion is visible, the flange portion of the holder shield being secured to the top shield; a transparent touch screen located in the indented portion of the holder shield; a bezel surrounding the peripheries of the top shield and the holder shield; and a display positioned beneath the holder shield and secured to the holder shield.
Claim 13
Dependent Claim
160 words
A touch screen device, comprising: a top shield of conductive material of generally rectangular configuration, having an upper surface and a lower surface, and also having a central opening through which a touch screen positioned beneath the top shield is accessible; a touch screen holder shield of conductive material having an upper surface and a lower surface, also having an indented portion for receiving and retaining a touch screen and a flange portion extending outwardly of the indented portion and in a plane defined by said upper surface, and a central opening in the indented portion through which a display positioned below the indented portion is visible, the flange portion of the holder shield being secured to the top shield; a transparent touch screen located in the indented portion of the holder shield; a bezel surrounding the peripheries of the top shield and the holder shield; and a display positioned beneath the holder shield and secured to the holder shield.
Claim 14
Dependent Claim
24 words
The touch screen device of claim 11, in which the top shield and the touch screen holder shield have the same external rectangular dimensions.
Claim 15
Dependent Claim
27 words
The touch screen device of claim 11, in which the central openings of the top shield and the touch screen holder shield have the same rectangular dimensions.
Claim 16
Dependent Claim
22 words
The touch screen device of claim 11, also including an insulating member located between the touch screen holder shield and the display.
Claim 17
Dependent Claim
28 words
The touch screen device of claim 14, also including a plurality of non-conducting fasteners for securing the display and the insulating member to the touch screen holder shield.
Claim 18
Dependent Claim
27 words
The touch screen device of claim 11, also including a plurality of fasteners for securing the top shield and the touch screen holder shield to the bezel.
Claim 19
Dependent Claim
27 words
The touch screen device of claim 11, in which the bezel encloses the top shield, the touch screen holder shield, the transparent touch screen and the display.
Claim 20
Dependent Claim
16 words
The touch screen device of claim 11, in which the display is a liquid crystal display.
Claim 21
Dependent Claim
22 words
The touch screen device of claim 11, in which the top shield and the touch screen holder shield are of rigid metal.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-11-26 | 2000-05-27 | 2000-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-11-26 | 2004-05-27 | 2004-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-11-26 | 2008-05-27 | 2008-11-26 | $7700.00 | Window Closed / Lapsed |