CN1165015C - Periphery electrode width changeable contact screen - Google Patents
Periphery electrode width changeable contact screen Download PDFInfo
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- CN1165015C CN1165015C CNB031129943A CN03112994A CN1165015C CN 1165015 C CN1165015 C CN 1165015C CN B031129943 A CNB031129943 A CN B031129943A CN 03112994 A CN03112994 A CN 03112994A CN 1165015 C CN1165015 C CN 1165015C
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Abstract
The present invention relates to a touch screen for positioning the coordinates of touch points by detecting electrical signals of touch points on a conductive film with electric field distribution. The present invention is characterized in that an inner contour line (71) of an electrode is surrounded around the conductive film and is used for forming the electric field distribution is a curve; the curving variation tendency of the inner contour line (71) is consistent with that of an aequilate electrode positioning curve (50). An outer contour line (72) can be a straight line, a curve or a folding line. The present invention can carry out multiple corrections to the non-linearity of the electric field distribution and enlarge effective linear touch positioning regions.
Description
Technical field
The present invention relates to a kind of touch-screen, especially locate the touch-screen of touch point coordinate by the electric signal that detects touch point on the conducting film that one deck has Electric Field Distribution.
Background technology
Locate the touch-screen of touch point coordinate at present by the electric signal that detects touch point on the conducting film, need: a conduction working plate 2 of on transparent base 21, making (normally) rectangular conductive film 20, make electrode 22,23,24,25 around conducting film 20, adjacent electrode connects and makes contact conductor 32 at four jiao 31; Detect the pick-up unit of electric signal from conducting film 20 with an energy.Said apparatus can be one and make conducting film 10 and by the detecting electrode 13 and the 14 conduction mantles 1 that link to each other with controller 34 that go between at transparent mantle 11 lower surfaces, above-mentioned conduction mantle 1 edge passes through insulation sealing layer 40 involutions with conduction working plate 2, but at the center, conducting film 10 and 20 is by insulating every son 30 or liquid, air etc. are isolated from each other, only conduction mantle 1 just contacts with conduction working plate 2 when being subjected to touching, the controller 34 of touch-screen can detect touch, and locatees touch point coordinate (as shown in Figure 1) by the electric signal of detected touch point in the touch process.Said apparatus also can be devices such as other pen that can conduct electricity even hand.For having good linear relationship between the elements of a fix that make the touch point and the detected corresponding electric signal, require the equipotential line of the Electric Field Distribution that forms on the above-mentioned conducting film, in the touch point, be the parallel lines vertical with the detection coordinates direction.Because there is pressure drop (seeing United States Patent (USP) 4538168) in electrode itself, in testing process, be non-linear curve along the equipotential line of (between idiostatic two angle points) electrode edge.Can cause the position line near electrode edge straight line location thus is not straight line, but (as shown in Figure 2) to the auditory localization cues 50 of center curvature, thereby have a strong impact on the touch locating accuracy.Contradiction for the non-linear and bearing accuracy that solves Electric Field Distribution has two kinds of ways: one. and by Control Software, rely on certain algorithm that the positional information of obtaining is carried out linearity correction, but can increase the cost of driving circuit and Control Software; Two. the electrode that forms the workplace Electric Field Distribution is carried out The Linearization Design.Existing electrode The Linearization Design relies on accurate resistor network or on-off element (seeing United States Patent (USP) 4661655,5438168,4822957) and bending electrode (seeing United States Patent (USP) 3798370,4198519) to realize.Adopt too high because of cost of manufacture, the additional complex process of on-off element, seldom adopt at present; The bending electrode, adopt figure adjustment, simplicity of design, but its electrode width D adds the amount of bow H (as shown in Figure 2) of top electrode, the capital dwindles the linear positioning area 51 that touches relatively, though the width of electrode can be done very narrowly in theory, the homogeneity of distribution of resistance is considered on manufacture craft and the electrode, and electrode width is unsuitable too narrow; And the designing technique of accurate resistor network, its electrode design is more complicated again.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can effectively proofread and correct the touch-screen of the nonlinear peripheral electrode wide variety of Electric Field Distribution.
Purpose of the present invention can reach by following measure:
A kind of touch-screen of peripheral electrode wide variety, it comprises a conduction working plate 2 that has conducting film 20 on transparent base 21, around conducting film 20, electrode 22,23,24,25 is arranged, adjacent electrode connects and has contact conductor 32 and energy detect electric signal from conducting film 20 pick-up unit at four jiao 31, it is characterized in that around the inner outline 71 of the electrode of conducting film 20 peripheries are curves, the bending change trend of the auditory localization cues 50 of its bending change trend and wide electrode is consistent, and outer contour 72 can be straight line, curve or broken line.
Purpose of the present invention can reach by following measure:
The shape of electrode 22,23,24,25 is continuous;
The shape of electrode 22,23,24,25 is segmentations;
Electrode section is the vertical straight line of perpendicular line of the perpendicular bisector of corresponding edge electrode with the shape at interval between the section;
Electrode section and the shape at interval between the section are the oblique lines that becomes the α angle with the perpendicular line of the perpendicular bisector of corresponding edge electrode, 0 °＜α＜90 °, and electrode pattern is into axisymmetric with the perpendicular bisector of corresponding edge top electrode;
The shape at the interval between electrode section and the section is curve or broken line, and electrode pattern is into axisymmetric with the perpendicular bisector of corresponding edge top electrode;
Length L and interval width d between electrode section and the section are constant;
Length L between electrode section and the section is that the elongated gradually or interval width d of perpendicular bisector from angle point to the corresponding edge electrode is that perpendicular bisector from angle point to the corresponding edge electrode diminishes gradually;
Length L between electrode section and the section is that the perpendicular bisector from angle point to the corresponding edge electrode is elongated gradually, and while interval width d is that the perpendicular bisector from angle point to the corresponding edge electrode diminishes gradually.
Advantage of the present invention:
The present invention is a multiple calibration result of having drawn accurate resistor network and bending electrode, can more effectively improve the linearity of Electric Field Distribution, enlarges linear touch area.
Description of drawings
Fig. 1 is a kind of structural representation of existing touch-screen;
Fig. 2 is the wide electrode of existing touch-screen and the non-linear location sweep synoptic diagram of generation;
Fig. 3 is a kind of not wide continuously electrode synoptic diagram of invention;
Fig. 4 is the electrode synoptic diagram that a kind of electrode outer contour of the present invention is curve or broken line;
Fig. 5 is the electrode synoptic diagram of a kind of segmentation wide variety of the present invention;
Fig. 6 is the enlarged diagram of Fig. 5 stage casing shape electrode 70;
Fig. 7 is the electrode synoptic diagram of another kind of segmentation wide variety of the present invention;
Fig. 8 is the enlarged diagram of Fig. 7 stage casing shape electrode 70.
Embodiment
Embodiment one
As Fig. 3, the inner outline 71 of electrode 22,23,24,25 is curves, and the bending change trend of the auditory localization cues 50 of its bending change trend and wide electrode is consistent.The outer contour 72 of electrode 22,23,24,25 is straight lines, and the width of electrode is increased from the angle point to the center gradually.71 pairs of nonlinear corrective actions of electric field of inner outline of the electrode of wide variety are similar with wide bending electrode (seeing United States Patent (USP) 3798370,4198519) in the present embodiment.And because the variation of electrode width, potential gradient along electrode gradually changes, its effect is identical with accurate resistor network (seeing United States Patent (USP) 4661655,4822957), so the electrode pair Electric Field Distribution of wide variety non-linear played dual corrective action, thereby its linear locating area that touches can touch positioning area 51 and expand near the rectangular shaped rim line 52 of electrode inner outline 71 or near rectangular shaped rim line 52 from the linearity of wide electrode.
Embodiment two
As Fig. 4, the inner outline 71 of electrode 22,23,24,25 is curves, and the bending change trend of the auditory localization cues 50 of its bending change trend and wide electrode is consistent; The outer contour 72 of electrode 22,23,24,25 is curves.
Embodiment three
As Fig. 4, the inner outline 71 of electrode 22,23,24,25 is curves, and the bending change trend of the auditory localization cues 50 of its bending change trend and wide electrode is consistent; The outer contour 72 of electrode 22,23,24,25 is broken lines.
Embodiment four
The inner outline 71 of electrode 22,23,24,25 is curves, and the bending change trend of the auditory localization cues 50 of its bending change trend and wide electrode is consistent; In the outer contour 72 of electrode 22,23,24,25, it is curve or broken line that a limit is arranged, and other three limits are straight lines.
Embodiment five
The inner outline 71 of electrode 22,23,24,25 is curves, and the bending change trend of the auditory localization cues 50 of its bending change trend and wide electrode is consistent; The outer contour 72 of electrode 22,23,24,25 is combination in any of curve, broken line and straight line.
Embodiment six
Outline line such as embodiment one, two, three, four or fives' wide variety be produced on electrode 22,23,24,25 on the conducting film 20, but its electrode structure is to combine (as Fig. 5) by discontinuous segment.Section is vertical with the perpendicular line of the perpendicular bisector of corresponding edge electrode with the interval of section, width d unanimity, every section length L unanimity.(as Fig. 6)
Embodiment seven
Outline line such as embodiment one, two, three, four or fives' wide variety be produced on electrode 22,23,24,25 on the conducting film 20, but its electrode structure is to combine (as Fig. 5) by discontinuous segment.Section is vertical with the perpendicular line of the perpendicular bisector of corresponding edge electrode with the interval of section, and width d diminishes gradually from angle point to each limit electrode perpendicular bisector, every section length L unanimity.
Embodiment eight
Outline line such as embodiment one, two, three, four or fives' wide variety be produced on electrode 22,23,24,25 on the conducting film 20, but its electrode structure is to combine (as Fig. 5) by discontinuous segment.Section is vertical with the perpendicular line of the perpendicular bisector of corresponding edge electrode with the interval of section, and width d is constant.The perpendicular bisector of every section length L from angle point to each limit electrode is elongated gradually.
Embodiment nine
Outline line such as embodiment one, two, three, four or fives' wide variety be produced on electrode 22,23,24,25 on the conducting film 20, but its electrode structure is to combine (as Fig. 5) by discontinuous segment.Section is vertical with the perpendicular line of the perpendicular bisector of corresponding edge electrode with the interval of section, and width d diminishes to each limit electrode perpendicular bisector gradually from angle point, and every section the perpendicular bisector of length L from angle point to each limit electrode is elongated gradually simultaneously.
Embodiment ten
Outline line such as embodiment one, two, three, four or fives' wide variety be produced on electrode 22,23,24,25 on the conducting film 20, but its electrode structure is to combine (as Fig. 7) by discontinuous segment.Interval between the section shape electrode becomes the oblique line that becomes 5 ° of angles with the perpendicular line of the perpendicular bisector of corresponding edge electrode, and electrode pattern becomes rotational symmetry with the electrode perpendicular bisector, width d unanimity, every section length L unanimity.(as Fig. 8)
Embodiment 11
Outline line such as embodiment one, two, three, four or fives' wide variety be produced on electrode 22,23,24,25 on the conducting film 20, but its electrode structure is to combine (as Fig. 7) by discontinuous segment.Interval between the section shape electrode becomes the oblique line that becomes 10 ° of angles with the perpendicular line of the perpendicular bisector of corresponding edge electrode, and electrode pattern becomes rotational symmetry with the electrode perpendicular bisector, width d diminishes to each limit electrode perpendicular bisector gradually from angle point, every section length L unanimity (as Fig. 8).
Embodiment 12
Outline line such as embodiment one, two, three, four or fives' wide variety be produced on electrode 22,23,24,25 on the conducting film 20, but its electrode structure is to combine (as Fig. 7) by discontinuous segment.Interval between the section shape electrode becomes the oblique line that becomes 20 ° of angles with the perpendicular line of the perpendicular bisector of corresponding edge electrode, and electrode pattern becomes rotational symmetry with the electrode perpendicular bisector, width d unanimity, every section length L perpendicular bisector elongated gradually (as Fig. 8) from angle point to each limit electrode.
Embodiment 13
Outline line such as embodiment one, two, three, four or fives' wide variety be produced on electrode 22,23,24,25 on the conducting film 20, but its electrode structure is to combine (as Fig. 7) by discontinuous segment.Interval between the section shape electrode becomes the oblique line that becomes 30 ° of angles with the perpendicular line of the perpendicular bisector of corresponding edge electrode, and electrode pattern becomes rotational symmetry with the electrode perpendicular bisector, width d diminishes to each limit electrode perpendicular bisector gradually from angle point, simultaneously every section the perpendicular bisector of length L from angle point to each limit electrode elongated gradually (as Fig. 8).
Embodiment 14
Outline line such as embodiment one, two, three, four or fives' wide variety be produced on electrode 22,23,24,25 on the conducting film 20, but its electrode structure is to be combined by discontinuous segment, interval between the section shape electrode becomes curve or the broken line that becomes 40 ° of angles with the perpendicular line of the perpendicular bisector of corresponding edge electrode, and electrode pattern becomes rotational symmetry with the electrode perpendicular bisector, width d unanimity, every section length L unanimity.
Embodiment 15
Outline line such as embodiment one, two, three, four or fives' wide variety be produced on electrode 22,23,24,25 on the conducting film 20, but its electrode structure is to be combined by discontinuous segment, interval between the section shape electrode becomes curve or the broken line that becomes 55 ° of angles with the perpendicular line of the perpendicular bisector of corresponding edge electrode, and electrode pattern becomes rotational symmetry with the electrode perpendicular bisector, width d diminishes to each limit electrode perpendicular bisector gradually from angle point, every section length L unanimity.
Embodiment 16
Outline line such as embodiment one, two, three, four or fives' wide variety be produced on electrode 22,23,24,25 on the conducting film 20, but its electrode structure is to be combined by discontinuous segment, interval between the section shape electrode becomes curve or the broken line that becomes 70 ° of angles with the perpendicular line of the perpendicular bisector of corresponding edge electrode, and electrode pattern becomes rotational symmetry with the electrode perpendicular bisector, width d unanimity, every section the length L perpendicular bisector from angle point to each limit electrode is elongated gradually.
Embodiment 17
Outline line such as embodiment one, two, three, four or fives' wide variety be produced on electrode 22,23,24,25 on the conducting film 20, but its electrode structure is to be combined by discontinuous segment, interval between the section shape electrode becomes curve or the broken line that becomes 85 ° of angles with the perpendicular line of the perpendicular bisector of corresponding edge electrode, and electrode pattern becomes rotational symmetry with the electrode perpendicular bisector, width diminishes to each limit electrode perpendicular bisector gradually from angle point, and every section the perpendicular bisector of length L from angle point to each limit electrode is elongated gradually simultaneously.
Claims (9)
1, a kind of touch-screen of peripheral electrode wide variety, it comprises a conduction working plate (2) that has conducting film (20) on transparent base (21), around conducting film (20) electrode (22) is arranged all around, (23), (24), (25), adjacent electrode connects and has contact conductor (32) and energy to detect the pick-up unit of electric signal from conducting film (20) four jiaos (31), it is characterized in that around the inner outline (71) of the peripheral electrode of conducting film (20) be curve, the bending change trend of the auditory localization cues of its bending change trend and wide electrode (50) is by making electrode (22), (23), (24), (25) width increases gradually to its center from angle point and reaches consistent, and outer contour (72) can be a straight line, curve or broken line.
2,, it is characterized in that the shape of electrode (22), (23), (24), (25) is continuous as right 1 described touch-screen.
3,, it is characterized in that the shape of electrode (22), (23), (24), (25) is segmentation as right 1 described touch-screen.
4,, it is characterized in that the electrode section and the shape at interval between the section are the vertical straight lines of perpendicular line with the perpendicular bisector of corresponding edge electrode as right 3 described touch-screens.
5, as right 3 described touch-screens, it is characterized in that the electrode section and the shape at interval between the section are the oblique lines that becomes the α angle with the perpendicular line of the perpendicular bisector of corresponding edge electrode, 0 °＜α＜90 °, and electrode pattern is into axisymmetric with the perpendicular bisector of corresponding edge top electrode.
6,, it is characterized in that the shape at the interval between electrode section and the section is curve or broken line, and electrode pattern is into the perpendicular bisector of corresponding edge top electrode axisymmetric as right 3 described touch-screens.
7,, it is characterized in that length L and the interval width d between electrode section and the section is constant as right 4,5 or 6 described touch-screens.
8,, it is characterized in that length L between electrode section and the section is that the elongated gradually or interval width d of perpendicular bisector from angle point to the corresponding edge electrode is that perpendicular bisector from angle point to the corresponding edge electrode diminishes gradually as right 4,5 or 6 described touch-screens.
9, as right 4,5 or 6 described touch-screens, it is characterized in that the length L between electrode section and the section is that perpendicular bisector from angle point to the corresponding edge electrode is elongated gradually, interval width d is that perpendicular bisector from angle point to the corresponding edge electrode diminishes gradually simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031129943A CN1165015C (en) | 2003-03-18 | 2003-03-18 | Periphery electrode width changeable contact screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031129943A CN1165015C (en) | 2003-03-18 | 2003-03-18 | Periphery electrode width changeable contact screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1438608A CN1438608A (en) | 2003-08-27 |
| CN1165015C true CN1165015C (en) | 2004-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031129943A Expired - Fee Related CN1165015C (en) | 2003-03-18 | 2003-03-18 | Periphery electrode width changeable contact screen |
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| CN (1) | CN1165015C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101526864B (en) * | 2008-03-04 | 2012-01-11 | 胜华科技股份有限公司 | Touch panel |
| CN101526874B (en) * | 2008-03-05 | 2012-03-07 | 比亚迪股份有限公司 | Resistance-type touch screen and manufacturing method thereof |
| US20100309166A1 (en) * | 2008-04-10 | 2010-12-09 | Sharp Kabushiki Kaisha | Touch panel and display device equipped with the same |
| CN101587410B (en) * | 2008-05-19 | 2011-05-18 | 比亚迪股份有限公司 | Four-wire resistance type touch screen and manufacturing method thereof |
| CN115605830A (en) * | 2020-09-28 | 2023-01-13 | 京东方科技集团股份有限公司（Cn） | Touch structure and display device |
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2003
- 2003-03-18 CN CNB031129943A patent/CN1165015C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1438608A (en) | 2003-08-27 |
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