WO2010053310A2 - Capteur de panneau tactile - Google Patents

Capteur de panneau tactile Download PDF

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Publication number
WO2010053310A2
WO2010053310A2 PCT/KR2009/006516 KR2009006516W WO2010053310A2 WO 2010053310 A2 WO2010053310 A2 WO 2010053310A2 KR 2009006516 W KR2009006516 W KR 2009006516W WO 2010053310 A2 WO2010053310 A2 WO 2010053310A2
Authority
WO
WIPO (PCT)
Prior art keywords
node pattern
vertical
horizontal
pattern
node
Prior art date
Application number
PCT/KR2009/006516
Other languages
English (en)
Korean (ko)
Other versions
WO2010053310A3 (fr
Inventor
남동식
Original Assignee
Nam Dong Sik
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nam Dong Sik filed Critical Nam Dong Sik
Publication of WO2010053310A2 publication Critical patent/WO2010053310A2/fr
Publication of WO2010053310A3 publication Critical patent/WO2010053310A3/fr

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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
    • G06F3/045—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
    • 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
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column 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
    • G06F3/03—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
    • G06F3/0412—Digitisers structurally integrated in a display
    • 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
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer

Definitions

  • the present invention relates to a touch panel sensor, and more particularly, to a touch panel sensor capable of accurately detecting two or more finger touches on a flat plate.
  • FIG. 1 is a plan view illustrating an ITO thin film in a conventional capacitive touch screen
  • FIG. 2 is a plan view illustrating a conventional capacitive touch screen operating mechanism.
  • a conventional touch screen electrically detects a contact of a finger.
  • a finger is a type of conductor through which electricity can flow, and when a finger comes close to an electrode, charge can be collected between the electrode and the finger. As the charge is collected, it becomes possible to measure the capacitance or capacitance between the finger and the electrode, which can be used to indirectly detect the touch of the finger.
  • the electrode of the touch screen may be formed of a transparent transparent electrode material, such as indium tin oxide (ITO) or IZO, as electricity flows. .
  • ITO indium tin oxide
  • IZO indium tin oxide
  • FIG. 1A illustrates a transparent electrode pattern oriented in the vertical direction (y-axis direction).
  • the vertically oriented transparent electrode patterns are formed on the transparent film 20 provided with a material such as a transparent plastic sheet or glass, and the transparent electrode patterns are vertical node patterns 22 and vertical node patterns 22 formed at uniform intervals. It is formed by the vertical connection pattern 24 which connects vertically.
  • FIG. 1B a transparent electrode pattern oriented in the horizontal direction (x-axis direction) is illustrated, and a transparent electrode pattern oriented in the horizontal direction is also formed on the transparent film 30, and the transparent electrode pattern is also The horizontal node pattern 32 and the horizontal node pattern 32 which are formed at uniform intervals are horizontally connected to each other.
  • a conventional touch screen can be formed by adhering the ITO transparent sheet of (a) and the ITO transparent sheet of (b) up and down.
  • the structure in which the two transparent sheets are bonded is shown in FIG.
  • connection patterns 32 in the horizontal direction and the vertical node pattern 22 in the vertical direction are staggered with each other, and the fine connection patterns connecting each electrode have a vertically crossing structure. These connection patterns are separated by a transparent sheet or other insulating means.
  • signal strengths of the transparent electrode patterns oriented vertically and horizontally vary according to the touched position, and horizontal and vertical coordinates can be calculated according to the signal strengths. .
  • the respective signal strengths may be measured, and horizontal and vertical coordinates (x, y) may be determined from the signal strengths. It is then calculated as the intersection of the horizontal and vertical coordinate directions.
  • signals of the horizontally or vertically oriented transparent electrode patterns generated in contact with the finger may not be detected as a single pulse, but may be detected in a plurality. Is common.
  • the pulse value having the maximum intensity may be selected as the pulse value having the maximum intensity among the changed intensity values of each signal, and the position of the point 22 where the finger touches may be determined based on this.
  • a case of multi-contact in which two fingers are in contact with the touch screen 21 may be considered.
  • two or more fingers may be brought into contact with the pad at the same time to express a predetermined function.
  • a double click may be defined in response to the multi-contact, or may be defined to enlarge or reduce the screen.
  • the present invention provides a touch panel sensor that can easily calculate the coordinates of each contact point without confusion in response to multiple contacts in which the fingers simultaneously touch at two or more points.
  • the present invention provides a touch panel sensor that can complement each contact point of the multi-contact using two or more electrode sheets and can easily recognize the position thereof.
  • the touch panel sensor for detecting the contact position of the body part comprises a first electrode sheet and a second electrode sheet.
  • the first electrode sheet includes a first sheet for forming an electrode pattern and a plurality of vertical node pattern portions arranged in a vertical direction on the sheet
  • the second electrode sheet also includes a second sheet for forming an electrode pattern and the sheet It includes a plurality of horizontal node pattern portion arranged in the horizontal direction on the top.
  • the vertical node pattern portions are arranged in a row in the horizontal or vertical direction, and are electrically connected sequentially. However, the vertical and horizontal node pattern portions are divided into at least two regions.
  • each vertical node pattern portion includes a first vertical node pattern and a second vertical node pattern adjacent to each other but electrically separated from each other, and the first vertical node pattern is coupled to the first vertical node pattern of another adjacent vertical node pattern portion.
  • the second vertical node pattern is electrically connected to the second vertical node pattern of another neighboring vertical node pattern portion.
  • each horizontal node pattern portion includes a first horizontal node pattern and a second horizontal node pattern adjacent to each other but electrically separated from each other, and the first horizontal node pattern is electrically connected to the first horizontal node pattern portion of the other horizontal node pattern portions adjacent to each other.
  • the second horizontal node pattern is electrically connected to the second horizontal node pattern of another neighboring horizontal node pattern part.
  • the resistance ratios of the first vertical node pattern and the second vertical node pattern are provided differently. Therefore, it is possible to specify the position on the x-axis of the touched point by specifying which vertical node pattern portion is touched or where it is touched by the x coordinate, and the resistance ratio of the first vertical node pattern and the second vertical node pattern in the same electrode sheet. By varying, the position on the y axis of the touched point can be specified.
  • the horizontal node pattern portion can likewise be applied.
  • the existing horizontal node pattern portion may specify the position on the y axis, but the horizontal node pattern portion according to the present invention, that is, the pattern portion divided into the first horizontal node pattern and the second horizontal node pattern, may also specify the position on the x axis. have.
  • the sheet for specifying the position on the y axis may not function properly. Since the electrode sheet can also specify the position on the x-axis and the position on the y-axis, errors due to simultaneous contact can be compensated for.
  • the touch panel sensor may be used as a touch screen using a transparent sheet and a transparent electrode, and may be used as a general touch pad by being formed using an opaque material.
  • the divided first and second vertical node patterns may define one vertical node pattern part, and the vertical node pattern parts are provided in a line but are two-dimensionally arranged irrespective of shape to simultaneously recognize information about two axes. It is possible.
  • the area or thickness occupied by each pattern may be changed. The same can be said for the horizontal node pattern.
  • the present invention is characterized by dividing the horizontal and vertical node pattern portions into two node patterns and varying the resistance ratio between these node patterns. Therefore, compared to the prior art in which only one of the x- and y-axis positions can be specified, the positions of the two axes can be compensated for, respectively. Therefore, when two fingers are touched overlapping on the approximately x-axis or y-axis, the positions of the two points can be accurately specified in consideration of signal signal differences between the two fingers.
  • FIG. 1 is a plan view illustrating an ITO thin film in a conventional capacitive touch screen.
  • FIG. 2 is a plan view illustrating a conventional capacitive touch screen operating mechanism.
  • FIG 3 is a plan view illustrating a first electrode sheet of a touch panel sensor according to an exemplary embodiment of the present invention.
  • FIG. 4 is a plan view illustrating a second electrode sheet of a touch panel sensor according to an exemplary embodiment of the present invention.
  • FIG. 5 is a plan view illustrating a method in which a first electrode sheet and a second electrode sheet are stacked to provide a touch panel sensor.
  • 6 to 8 are partially enlarged plan views for explaining a vertical or horizontal node pattern in other embodiments of the present invention.
  • the present invention relates to a touch panel sensor for use in a touch screen for sensing the contact position of a part of the body.
  • FIG. 3 is a plan view illustrating a first electrode sheet of a touch panel sensor according to an embodiment of the present invention
  • FIG. 4 is a plan view illustrating a second electrode sheet of a touch panel sensor according to an embodiment of the present invention. to be.
  • the first electrode sheet includes a first sheet 110 and vertical node pattern portions 121 to 128 formed on the first sheet 110.
  • the vertical node pattern portions 121 to 128 are arranged up and down, and approximately six lines of pattern portions provided by each arrangement are provided.
  • the vertical node pattern parts 121 to 128 include first vertical node patterns 121a and 122a and second vertical node patterns 121b and 122b, respectively.
  • the vertical node patterns 121 to 128 may be provided in a rhombus or quadrangular shape based on one vertical line, and the first vertical node pattern and the second vertical node pattern may be formed from above on the sides facing each other. Divided into.
  • the ratio of the height (d: D) from the top of the first vertical node pattern and the second vertical node pattern is (1: 8), (2: 7), (3: 6), (4: 4), (5 : 4), (6: 3), (7: 2), (8: 1), and the area ratio between both patterns is also changed according to the height ratio.
  • the first vertical node patterns 121a and 122a are vertically connected by the first vertical connection pattern 129a, and the area of the first vertical node patterns 121a and 122a increases in steps from the first vertical node pattern positioned at the top thereof.
  • the second vertical node patterns 121b and 122b are vertically connected by the second vertical connection pattern 129b, and the area decreases in steps from the second vertical node pattern positioned at the top.
  • the first sheet 110 may be formed using a material such as plastic or glass such as polyethylene, polypropylene, acryl, polyethylene terephthalate (PET), and the like.
  • a material such as plastic or glass such as polyethylene, polypropylene, acryl, polyethylene terephthalate (PET), and the like.
  • PET polyethylene terephthalate
  • an insulating substrate may be used in a pointing device using a touch pad or a stylus fan used in a notebook.
  • the vertical node pattern parts 121 to 128 described above may also be differently selected according to the use of the touch panel sensor.
  • materials such as ITO and IZO may be selected.
  • various metals or alloys such as gold, silver and aluminum having conductivity can be used as the material of the resistance electrode.
  • the first vertical node patterns 121a and 122a are interconnected, and the second vertical node patterns 121b and 122b are also interconnected.
  • the location of the connection can also be selected in various ways.
  • the x coordinate may be determined by the formula ⁇ (n 1 * 1) + (n 2 * 2) + to (n k * k) ⁇ / (n 1 + n 2 + ⁇ n k ), where k is numbered for each line based on any one of the drawings, and n k is the sum of signal strengths detected in the first and second vertical node patterns in each numbered line.
  • the strength of the signal input to the controller is 60 from the left through the first vertical note pattern in the fourth line, and 70 from the first vertical note pattern in the fifth line.
  • the signal strength of the remaining first vertical node pattern is 0, while the signal strength is 80 through the second vertical node pattern of the third line, and the signal strength of the second vertical node pattern of the fourth line is 100, 5th.
  • the x coordinate may be obtained by calculating the x coordinate between the first vertical node patterns in the same direction and then averaging them again.
  • the specific equation may be based on 1/2 ⁇ ( ⁇ n 1k * k) / ( ⁇ n 1k ) + ( ⁇ n 2k * k) / ( ⁇ n 2k ) ⁇ , where k is the number of lines of the vertical node pattern, n 1k And n 2k are the strengths of the capacitance measured through the first and second vertical node patterns, respectively.
  • the vertical position of the finger in contact with the touch panel sensor is determined by comparing the signal values measured from the two electrode patterns by using the first and second vertical node patterns as a pair. For reference, when the finger approaches the first vertical node pattern and the second vertical node pattern, the intensity of the signal respectively input to the controller is proportional to the area where the finger touches.
  • the area of the finger in contact with the first vertical node pattern is called A (y)
  • the intensity of the signal is called C (y)
  • the area of the finger in contact with the paired second vertical node pattern The area is called B (y) and the signal strength is assumed to be D (y).
  • the controller calculates the C (y) / D (y) values, compares them with the area ratio A (y) / B (y), and converts them to y.
  • the area touched by the finger is much larger than the resolution and overlaps several lines, so this value is read and calculated to convert to coordinates in the resolution.
  • the signal strength through the first vertical note pattern was 60 in the fourth line from the left of the line of the vertical node pattern portion, the signal strength through the second vertical node pattern was 100, and Assume that the signal strength through the first vertical note pattern is 70 and the signal strength through the second vertical node pattern is 90.
  • the intensity of the signal by the first vertical node pattern is 130 and the intensity of the signal by the second vertical node pattern is 190. That is, C (y) is 130, D (y) is 190, and C (y) / D (y) is about 0.68.
  • the position where A (y) / B (y) is 0.68 is when y is about 0.65, that is, when the length of the touch panel sensor is 100 mm, the position of about 65 mm may be recognized.
  • the second electrode sheet includes a second sheet 130 and horizontal node pattern portions 141 to 147 formed on the second sheet 130.
  • the horizontal node pattern portions 141 to 147 are arranged to the left and right, and approximately seven lines of the pattern portion provided by each arrangement are provided upward and downward.
  • the horizontal node pattern units 141 to 147 include first horizontal node patterns 141a and 142a and second horizontal node patterns 141b and 142b, respectively.
  • the horizontal node pattern units 141 to 147 may be provided in a rhombus or quadrangle form based on one horizontal line, and the first horizontal node pattern and the second horizontal node may be provided from the upper right side on the sides facing each other. Divided into patterns.
  • the width of the first horizontal node pattern and the second horizontal node pattern (e: E) is (1: 7), (2: 6), (3: 5), (4: 4), (5 : 3), (6: 2), (7: 1), and the area ratio between the two patterns is also changed according to the ratio of the width.
  • the first horizontal node patterns 141a and 142a are connected to the left and right by the first horizontal connection pattern 149a, and the area increases gradually from the first horizontal node pattern located at the rightmost.
  • the second horizontal node patterns 141b and 142b are also connected to the left and right by the second horizontal connection pattern 149b, and the area decreases stepwise from the second horizontal node pattern located at the rightmost.
  • the second sheet 130 may be formed of substantially the same material as the first sheet 110, and may be formed of synthetic resin such as PP, PE, acrylic, PET, and the like. It is possible.
  • the first horizontal node patterns 141a and 142a are interconnected, and the second horizontal node patterns 141b and 142b are also interconnected.
  • the location of the connection can also be selected in various ways.
  • the above-described method using the vertical node pattern unit may be used, and overlapping description thereof will be omitted.
  • FIG. 5 is a plan view illustrating a method in which the first electrode sheet and the second electrode sheet are stacked to provide the touch panel sensor 100.
  • a first electrode sheet including vertical node pattern parts 121 to 128 and a second electrode sheet including horizontal node pattern parts 141 to 147 may be stacked up and down.
  • the first electrode sheet and the second electrode sheet may be stacked up or down, but are preferably electrically separated by an insulating material or an insulating film between the layers.
  • the x and y coordinates of the finger contact point may be calculated in the first electrode sheet having the vertical node pattern portion. There is a number.
  • the y-coordinate and x-coordinate of the finger contact point can be calculated in the second electrode sheet having the horizontal node pattern portion.
  • 6 to 8 are partially enlarged plan views for explaining a vertical or horizontal node pattern in other embodiments of the present invention.
  • the node pattern parts 221 ⁇ 223 are formed in a line.
  • the node pattern parts 221 to 223 are divided into first node patterns 221a to 223a and second node patterns 221b to 223b.
  • the node pattern portions 221 to 223 are provided in a rhombus or square shape, and the first node patterns 221a to 223a and the second node patterns 221b to 223b are divided up and down by horizontally divided lines. Also, the first node patterns 221a to 223a are connected by a thin connection pattern due to a constant area increase, and the second node patterns 221b to 223b are also connected by thin connection patterns.
  • the node pattern parts 231 to 233 are formed in a line.
  • the node pattern units 231 to 233 are also divided into first node patterns 231a to 233a and second node patterns 231b to 233b.
  • the node pattern parts 231 to 233 are provided in a circular or elliptical shape, and the first node patterns 231a to 233a and the second node patterns 231b to 233b are divided into predetermined area ratios by lines divided at predetermined angles. do. Also, the first node patterns 231a to 233a, which increase in area by a predetermined unit, are connected by thin connection patterns, and similarly, the second node patterns 231b to 233b are connected by thin connection patterns.
  • the node pattern parts 241 ⁇ 243 are formed in a line.
  • the node pattern parts 241 to 243 are also divided into first node patterns 241a to 243a and second node patterns 241b to 243b.
  • the node pattern parts 241 to 243 are provided in a quadrangle, and the first node patterns 241a to 243a and the second node patterns 241b to 243b are divided into predetermined area ratios by divided lines formed up and down. Also, the first node patterns 241a to 243a, which increase in area by a predetermined unit, are connected by thin connection patterns, and likewise, the second node patterns 241b to 243b are connected by thin connection patterns.
  • first node pattern and the second node pattern may be provided in various shapes, and the resistance ratio may be adjusted through an area or another structure.
  • the node pattern portion is not limited to the same area, and the area of the pattern portion may be gradually increased, or one of the first and second node patterns may be provided in such a manner that the area is constant and the other increases or decreases. .
  • the touch panel sensor according to the present invention may be used in a touch screen to detect a contact position of a part of a body.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)

Abstract

L'invention concerne un capteur de panneau tactile qui détecte la position de contact d'une partie d'un corps, ledit capteur comprenant une première feuille d'électrode et une deuxième feuille d'électrode. La première feuille d'électrode comprend une première feuille sur laquelle est formé un motif d'électrode, et une pluralité de parties verticales de motif de nœuds placées verticalement sur la première feuille. La deuxième feuille d'électrode comprend une deuxième feuille sur laquelle est formé un motif d'électrode, et une pluralité de parties horizontales de motifs de nœuds placées horizontalement sur la deuxième feuille. Les parties verticales de motif de noeuds sont aménagées en rangée dans une direction horizontale ou verticale, et sont connectées électriquement les unes aux autres en série.
PCT/KR2009/006516 2008-11-07 2009-11-06 Capteur de panneau tactile WO2010053310A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020080110161A KR100924259B1 (ko) 2008-11-07 2008-11-07 터치 패널 센서
KR10-2008-0110161 2008-11-07

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WO2010053310A2 true WO2010053310A2 (fr) 2010-05-14
WO2010053310A3 WO2010053310A3 (fr) 2010-08-05

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KR101097274B1 (ko) 2009-06-16 2011-12-22 (주)삼원에스티 터치패널센서
KR101133492B1 (ko) 2009-12-28 2012-04-10 주식회사 지니틱스 정전용량 방식의 터치 패널
KR101073161B1 (ko) 2010-05-03 2011-10-12 삼성모바일디스플레이주식회사 터치 스크린 패널

Citations (3)

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Publication number Priority date Publication date Assignee Title
KR20050084370A (ko) * 2002-12-19 2005-08-26 쓰리엠 이노베이티브 프로퍼티즈 컴파니 격자형 터치 감지 시스템
KR20070108077A (ko) * 2006-05-05 2007-11-08 해럴드 필립 터치 스크린 소자
KR20070112750A (ko) * 2007-11-07 2007-11-27 주식회사 애트랩 터치 패널 장치 및 이의 접촉위치 검출방법

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Publication number Priority date Publication date Assignee Title
TW200842681A (en) * 2007-04-27 2008-11-01 Tpk Touch Solutions Inc Touch pattern structure of a capacitive touch panel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050084370A (ko) * 2002-12-19 2005-08-26 쓰리엠 이노베이티브 프로퍼티즈 컴파니 격자형 터치 감지 시스템
KR20070108077A (ko) * 2006-05-05 2007-11-08 해럴드 필립 터치 스크린 소자
KR20070112750A (ko) * 2007-11-07 2007-11-27 주식회사 애트랩 터치 패널 장치 및 이의 접촉위치 검출방법

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KR100924259B1 (ko) 2009-10-30

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