WO2009053492A1 - Single oder multitouchfähige touchscreens oder touchpads bestehend aus einem array von drucksensoren sowie herstellung solcher sensoren - Google Patents
Single oder multitouchfähige touchscreens oder touchpads bestehend aus einem array von drucksensoren sowie herstellung solcher sensoren Download PDFInfo
- Publication number
- WO2009053492A1 WO2009053492A1 PCT/EP2008/064547 EP2008064547W WO2009053492A1 WO 2009053492 A1 WO2009053492 A1 WO 2009053492A1 EP 2008064547 W EP2008064547 W EP 2008064547W WO 2009053492 A1 WO2009053492 A1 WO 2009053492A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- touchscreen
- sensors
- display
- pressure
- touchpad
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/205—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using distributed sensing elements
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- 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
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
- G06F3/04144—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position using an array of force sensing means
-
- 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
-
- 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
- G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
Definitions
- the invention relates to touchscreen or touchpad that determines the position of the touch.
- the touch screen technology is becoming increasingly popular, since an immediate interaction with the device with immediate feedback on the screen is possible.
- the space saving is particularly relevant for mobile devices, as the display and touch interface combined take up less space than display plus eg a keyboard.
- touchpads ie touch-sensitive surfaces
- touchpads are the most common replacement for a mouse today, eg for notebooks.
- multitouch capable touch devices touchscreen screen or touchpad
- a completely new interaction for example, with several people simultaneously on a display possible.
- Multitouch-capable two-dimensional input devices are nowadays usually realized by means of imaging processes or via transparent, capacitive sensor arrays above the display.
- the use of inductive methods is conceivable.
- an infrared camera "views" a semitransparent projection surface made of glass or acrylic, onto which the computer image to be displayed is projected from below using a beamer.
- the pane is illuminated laterally with infrared light. Now, if one or more fingers touch the screen, the refractive index of the lens changes at that point, and in the image of the infrared camera you can see the finger or fingers (and only these) as dots.
- the change in the capacitance of one or more sensors is measured when a finger or other dielectric approaches.
- the position of one or more fingers can now be calculated from interpolation of the signals of various sensors arranged as an array.
- Capacitive sensors are susceptible to interference and can not penetrate today's conventional display. Therefore, the indium-tin-oxide-based sensors must be made transparent and positioned above the display. Since indium is one of the rarest elements of the earth, such interfaces are very expensive. In addition, they are not perfectly transparent, so that the readability of the screen suffers and possibly reflective effects on the interface can interfere. Inductive methods are based on the strongly disturbing aspect that they only contain special pins that contain electronic components. Touchscreen or touchpad Interfaces, where only one finger can be detected, are realized in different ways today.
- pressure sensor arrays which are used to measure as accurately as possible the different pressure conditions on a surface, e.g. for medical purposes
- the indicated in claim 1 invention is based on the problem of producing a single or multi-touch display or touchpad very efficient and inexpensive, which is both robust and insensitive interference is, as well as miniaturize easily and can be used in mobile devices.
- This object is achieved by a device having the features of the independent claims.
- the object is achieved by pressure sensors (3) which are arranged as a two-dimensional array on a bottom surface (1) and are provided with signal lines (2) so that each sensor can be evaluated individually.
- On this array is a thin and thus flexible display (4) for use as a touch screen or a surface of flexible material (4) (eg PVC, acrylic, up to paper, textiles oa) for use as a touchpad so that each pressure sensor touches the display or the surface. Since modern displays are usually very thin, they have a certain elasticity. When used as a touchpad (without display), one can determine the elasticity of the surface by choosing the material itself.
- Fig. A shows the perspective layer structure of a display with a sensor layer and a display layer
- Figs. B-B (I) - (2) show the layer structure from the side in different degrees of detail
- Fig. C shows the schematic structure of one of the many sensors from above
- Fig. D-D shows the sensor of C in the side view
- Fig. E-E shows a side view, an embodiment, of a sensor which changes its resistance as a result of pressure
- Fig. F shows a plan view of a pressure-sensitive ink on which at the points where pressure sensors are to arise, already interconnected interconnects.
- Fig. G shows a multilayer sensor, with a lattice-shaped grid, wherein at the nodes of the grid a view is applied, which changes the resistance as a function of pressure, so that cause the upper and the lower conductor track a short circuit;
- Fig. H shows a side view of Fig. G.
- Fig. A shows a perspective layer structure of
- the pressure sensors for such an array can be produced by printing a material which under pressure changes its resistance (9) in a printing process to a substrate (7) with corresponding conductor tracks (5, 6 and 8).
- This can be done very efficiently using a standard method in board making, where solder paste is usually applied to the board through a stencil stencil.
- the invention is not limited to this method.
- it is now possible to print the pressure-sensitive ink onto the board prepared for this purpose, which already has interlocking printed conductors at the points where pressure sensors are to be formed (FIG. F) in order to measure the resistance of the ink.
- another layer of plastic can now be applied to increase the thickness of the sensors.
- the distance between the surface and the display to the sensor field increases somewhat, so that a contact of the display can also be ensured and a deformation of the surface is possible without it touching the base surface 7.
- This contact can also be avoided by using the sensors in a suitable form (square, hexagonal, etc) are placed so close together that the ink (9) itself forms the surface. Then, in the case of use as a touchpad, an additional surface is not necessary.
- the production of pressure sensors can be excellent and extremely inexpensive in the
- Manufacturing process of the evaluating electronics are integrated.
- the sensor technology can also be produced completely in the printing process by also printing the conductor tracks (11 and 13) with a substance or "ink" which has an invariable and lowest possible electrical resistance in a conventional printing process on a base surface.
- An array of sensor fields (11) with associated strip conductors is first printed on a base area (10). Now the ink is going
- the sensor surfaces (13) are applied with the corresponding conductor tracks. Since the ink (12) completely surrounds the sensor surface (11), no short circuit between the upper and lower sensor layer can arise. The resistance can now be measured via the active area (Aw). In this way sensors can be applied to almost every base surface. If the base surface should be electrically conductive, an insulating layer must first be applied. This can also be done by printing or any other suitable method. Possibly. An insulating layer is also to be applied above the sensor system and the conductor tracks in such a way that no electrical contact with the touching object can be established.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Position Input By Displaying (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010530481A JP2011501307A (ja) | 2007-10-26 | 2008-10-27 | 圧力センサーアレイを有するシングルタッチ型またはマルチタッチ型のタッチスクリーンまたはタッチパッド、および圧力センサーの製造方法 |
CN200880113176A CN101836178A (zh) | 2007-10-26 | 2008-10-27 | 包括压力传感器阵列的具有单触摸或多触摸能力的触摸屏幕或触摸垫及此类传感器的制作 |
US12/739,695 US20100315373A1 (en) | 2007-10-26 | 2008-10-27 | Single or multitouch-capable touchscreens or touchpads comprising an array of pressure sensors and the production of such sensors |
EP08841152A EP2208129A1 (de) | 2007-10-26 | 2008-10-27 | Single oder multitouchfähige touchscreens oder touchpads bestehend aus einem array von drucksensoren sowie herstellung solcher sensoren |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007052008.7 | 2007-10-26 | ||
DE102007052008A DE102007052008A1 (de) | 2007-10-26 | 2007-10-26 | Single- oder multitouchfähiger Touchscreen oder Touchpad bestehend aus einem Array von Drucksensoren sowie Herstellung solcher Sensoren |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009053492A1 true WO2009053492A1 (de) | 2009-04-30 |
Family
ID=40139132
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/064547 WO2009053492A1 (de) | 2007-10-26 | 2008-10-27 | Single oder multitouchfähige touchscreens oder touchpads bestehend aus einem array von drucksensoren sowie herstellung solcher sensoren |
Country Status (7)
Country | Link |
---|---|
US (1) | US20100315373A1 (de) |
EP (1) | EP2208129A1 (de) |
JP (1) | JP2011501307A (de) |
KR (1) | KR20100105545A (de) |
CN (1) | CN101836178A (de) |
DE (1) | DE102007052008A1 (de) |
WO (1) | WO2009053492A1 (de) |
Cited By (3)
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JP2013503394A (ja) * | 2009-08-27 | 2013-01-31 | シンボル テクノロジーズ, インコーポレイテッド | タッチスクリーン上のコンテンツの圧力ベースの操作のための方法および装置 |
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Also Published As
Publication number | Publication date |
---|---|
US20100315373A1 (en) | 2010-12-16 |
DE102007052008A1 (de) | 2009-04-30 |
CN101836178A (zh) | 2010-09-15 |
JP2011501307A (ja) | 2011-01-06 |
KR20100105545A (ko) | 2010-09-29 |
EP2208129A1 (de) | 2010-07-21 |
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