US20040125087A1 - Single-layer touchpad having touch zones - Google Patents
Single-layer touchpad having touch zones Download PDFInfo
- Publication number
- US20040125087A1 US20040125087A1 US10/634,738 US63473803A US2004125087A1 US 20040125087 A1 US20040125087 A1 US 20040125087A1 US 63473803 A US63473803 A US 63473803A US 2004125087 A1 US2004125087 A1 US 2004125087A1
- Authority
- US
- United States
- Prior art keywords
- touchpad
- clear
- electrodes
- display screen
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03547—Touch pads, in which fingers can move on a surface
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
- G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
- G06F3/04886—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures by partitioning the display area of the touch-screen or the surface of the digitising tablet into independently controllable areas, e.g. virtual keyboards or menus
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
Definitions
- the invention relates generally to touchpads. More specifically, the invention relates to clear touchpads that can be disposed over a viewing or display screen such as on a computer monitor, a PDA or a mobile telephone, wherein the touchpad is capable of determining which zone a user is touching on the display screen.
- a touchpad is fundamentally a touch-sensitive device, generally found to be operating using the principles of resistance sensing, capacitance sensing, optical sensing or other means of sensing touch.
- touchpads can be disposed over a clear substrate, where the electrodes that define the sensory boundaries of the touchpad are made from clear or nearly clear inks, such as indium tin oxide (ITO).
- ITO indium tin oxide
- the electrodes can also be made from very thin wires, although this method introduces some difficulties.
- a relatively see-through or clear touchpad it can be disposed over a display screen and operated much like a touchscreen as known in the prior art.
- the substrate upon which the electrodes of the clear touchpad are disposed can be rigid or flexible, but as a practical matter, the substrate should be relatively thin.
- a thin substrate simply helps to make the clear touchpad as transparent as possible. Transparency is important because of the nature of the display screen that is likely to be underneath the clear touchpad. In other words, the display screen may not be a particularly bright screen. Thus, in order to help the user by not increasing eye strain, the display screen should be dimmed as little as possible from passing through the substrate and electrodes of the clear touchpad.
- Good materials for substrates that are relatively clear and through which a user can see a display screen include KAPTON®, MYLARTM, KADADEX®, polyethylene napthalate (PEN®) and other materials having similar mechanical and electrical properties.
- Complete touchpad functionality is generally characterized as providing cursor control for a computer, television, or a portable electronic appliance such as a PDA, camera, mobile telephone, etc. Accordingly, such a touchpad requires at least two layers of sensing electrodes when the touchpad uses capacitance sensing technology, such as that provided by CIRQUE CORPORATION. Multiple substrate layers and thus multiple or overlapping layers of electrodes generally results in a touchpad that is mostly transparent, but can be difficult to see through. This becomes a problem of usability when the touchpad is disposed on the display screen.
- the present invention is a single-layer touchpad comprised of a relatively clear substrate, a first active electrode disposed thereon, and a sense electrode disposed thereon, wherein the first active electrode and the sense electrode are comprised of a conductive material, wherein the first active electrode in combination with the sense electrode are used to detect the presence of a pointing object in a zone, determining in which zone the pointing object has been detected, or the simultaneous presence of multiple pointing objects in multiple zones, and wherein the first active electrode and/or the sense electrode are made sufficiently visible so that a pattern is visually detectable to the user when looking at the display screen.
- FIG. 1 is a perspective view of a portable electronic appliance having a display screen and a clear touchpad disposed thereon to provide input.
- FIG. 2 is an illustration of zones arranged as a column to provide scrolling input.
- FIG. 3 is an illustration of two parallel columns of zones for providing scrolling control for two different inputs.
- FIG. 4 is an enlarged schematic diagram of the layout of electrodes for a clear touchpad that is made in accordance with the principles of the present invention.
- FIG. 5 is an enlarged schematic diagram of a different layout of electrodes for a clear touchpad.
- FIG. 6 is an enlarged cross-sectional view of a clear touchpad having mechanical dome switches disposed thereover.
- the present invention provides touch zone control in a capacitance sensitive limited functionality touchpad.
- Touch zone control is a useful feature wherein the clear touchpad of the present invention sends data to a device such as a portable electronic appliance having a display screen as mentioned above.
- a clear touchpad 100 shown as various electrodes 102 is disposed over a display screen 104 .
- the display screen 104 and clear touchpad 100 are part of a portable electronic appliance 106 .
- the portable electronic appliance can be any mentioned previously in this document, or any other type of device having a display screen that can take advantage of touchpad input.
- the various electrodes 102 are shown without the detail of the electrical connections required to make the clear touch pad functional. These electrical connections are shown in subsequent figures.
- the various electrodes 102 are shown as very dark lines on the display screen 104 . This exaggeration of the darkness of the various electrodes 102 is for illustration purposes only. It should be remembered that the inks or other conductive materials being used for the various electrodes 102 are relatively transparent to the user.
- the clear touchpad 100 shown in FIG. 1 is also notable in that it defines distinct and separate zones as will be shown in greater detail.
- Data sent by sensing circuitry associated with the clear touchpad 100 indicates to the portable electronic appliance 106 the detection of contact by a pointing object.
- the pointing object can be a finger or other object that can be detected by a capacitance sensitive clear touchpad 100 .
- the clear touchpad 100 can also indicate in which zone the contact has occurred.
- the present invention provides the functionality of a one dimensional input device.
- the clear touchpad 100 can provide the input of buttons. Each separate is a single button. By detecting which zone or button has been touched, a distinct operation can be performed by the portable electronic appliance.
- FIG. 2 illustrates that if the zones 108 are lined up to form a column, then movement from zone to zone can be detected as discrete steps. If more sophisticated touchpad circuitry is provided, then it may be possible to determine finer movement along the column, and thus provide smaller incremental movement along the column.
- more than one column may be provided as shown in FIG. 3, so that multiple scrolling regions can be controlled by the same clear touchpad as demonstrated by columns 1 ( 110 ) and 2 ( 112 ), parallel clear touchpads, perpendicular clear touchpads, or some other arrangement of zones as may be desired.
- the pattern or layout of one dimensional regions or zones may be quite varied, and should not be considered a limiting factor of the present invention.
- FIG. 4 is an enlarged schematic layout of the presently preferred embodiment of the invention.
- FIG. 4 shows a single-layer substrate 10 which is assumed to be the plane of the figure. Only a single active electrode (X or Y) is needed to detect touching in a zone. Assume that the electrodes 20 , 22 , 24 , 26 are X electrodes.
- FIG. 4 has four zones 12 , 14 , 16 , 18 . These four zones are defined only generally be the dotted lines that include each of the item numbers.
- the four zones 12 , 14 , 16 , 18 are comprised of the corresponding electrodes 20 , 22 , 24 , 26 and the space around them, out to the one sense electrode 30 . Notice that the sense electrode 30 is surrounded by a grounding ring 32 that shields the one sense electrode from signals on other electrode wires or other interference.
- the present invention operates when the active electrodes 20 , 22 , 24 , 26 and the one sense electrode 30 are coupled to a touchpad sensing circuit associated with the clear touchpad 10 .
- the touchpad sensing circuit may be the circuit sold by Cirque® Corporation in its touchpads. It is noted that a touchpad sensing circuit that is designed for providing complete touchpad functionality can be used in a clear touchpad having a single layer. However, the touchpad sensing circuitry can also be modified to operate more efficiently without an input for an active electrode that is not being used when only providing limited touchpad functionality.
- An important aspect of the present invention is to also provide the feature of shaping the active electrode, the one sense electrode, or both the active and the one sense electrodes in desirable patterns. It was stated earlier that it is desirable to make the electrodes as transparent to the user as possible in order to avoid dimming a display screen. However, it may be desirable to make at least a portion of the electrodes visible to a user when looking at the display screen.
- an important aspect of the invention is the ability to make visible a desirable pattern as seen when looking at the display screen. Assuming that a single-layer touchpad has been disposed between the display screen and the user, or the touchpad is visible from the underside of the display screen, it may be desirable that the touchpad not be made completely transparent to the user.
- the electrodes of the touchpad can be made visible to the user by taking advantage of certain characteristics of the materials used in them.
- a conductive material for the electrodes whose width or thickness can be varied in order to obtain various degrees of visibility.
- additional materials may be added to the conductive material used for the electrodes, wherein the additional materials darken or lighten the appearance of the conductive material.
- the logo of the seller is the shape of one of the electrodes 20 , 22 , 24 , or 26 .
- One or all of these electrodes 20 , 22 , 24 , 26 could be made slightly visible when looking at the display screen.
- the number of zones that can be provided by the clear touchpad can be modified as well, depending upon the characteristics of the clear touchpad being used.
- the number of zones should not be considered a limiting factor, as the touchpad and its associated touchpad sensing circuitry can be modified to provide many distinct zones of desired.
- FIG. 5 is an enlarged schematic block diagram of another clear touchpad of the present invention. Note that the shape of the active electrodes 40 , 42 , 44 , 46 are different from those of FIG. 4. This is simply to make it plain that the shape of the electrodes can be modified to be many desirable shapes and patterns.
- FIG. 6 is an enlarged and cross-sectional illustration of this concept, wherein a touchpad substrate 50 is shown.
- the substrate 50 has disposed thereon a desired pattern or layout of electrodes 52 of the clear touchpad.
- Disposed over these electrodes are mechanical dome switches 54 .
- the functionality provided by the electrodes 52 may be that of a scrolling region.
- the mechanical dome switches 54 would thus provide a different function in the same space.
- the electrodes 52 might also function as buttons. Thus, there could be dual use of the same area. If the electrodes are active, then an electrode switch might be actuated. If the electrodes are inactive, then the mechanical dome switches maybe actuated to provide a different input.
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Computer Hardware Design (AREA)
- Position Input By Displaying (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/634,738 US20040125087A1 (en) | 2002-08-02 | 2003-08-04 | Single-layer touchpad having touch zones |
US11/213,176 US7423635B2 (en) | 2002-08-02 | 2005-08-26 | Single-layer touchpad having touch zones |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US40084302P | 2002-08-02 | 2002-08-02 | |
US10/634,738 US20040125087A1 (en) | 2002-08-02 | 2003-08-04 | Single-layer touchpad having touch zones |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/213,176 Continuation US7423635B2 (en) | 2002-08-02 | 2005-08-26 | Single-layer touchpad having touch zones |
Publications (1)
Publication Number | Publication Date |
---|---|
US20040125087A1 true US20040125087A1 (en) | 2004-07-01 |
Family
ID=31495890
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/634,738 Abandoned US20040125087A1 (en) | 2002-08-02 | 2003-08-04 | Single-layer touchpad having touch zones |
US11/213,176 Active 2027-02-17 US7423635B2 (en) | 2002-08-02 | 2005-08-26 | Single-layer touchpad having touch zones |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/213,176 Active 2027-02-17 US7423635B2 (en) | 2002-08-02 | 2005-08-26 | Single-layer touchpad having touch zones |
Country Status (8)
Country | Link |
---|---|
US (2) | US20040125087A1 (fr) |
EP (1) | EP1573706A3 (fr) |
JP (1) | JP2006500642A (fr) |
KR (1) | KR20050026070A (fr) |
CN (1) | CN1705974A (fr) |
AU (1) | AU2003258027A1 (fr) |
CA (1) | CA2494353A1 (fr) |
WO (1) | WO2004013833A2 (fr) |
Cited By (44)
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Also Published As
Publication number | Publication date |
---|---|
EP1573706A2 (fr) | 2005-09-14 |
EP1573706A3 (fr) | 2005-09-28 |
US7423635B2 (en) | 2008-09-09 |
US20050280639A1 (en) | 2005-12-22 |
CA2494353A1 (fr) | 2004-02-12 |
CN1705974A (zh) | 2005-12-07 |
WO2004013833A3 (fr) | 2005-08-11 |
KR20050026070A (ko) | 2005-03-14 |
WO2004013833A2 (fr) | 2004-02-12 |
AU2003258027A1 (en) | 2004-02-23 |
JP2006500642A (ja) | 2006-01-05 |
AU2003258027A8 (en) | 2004-02-23 |
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