TW200813797A - Two-dimensional position sensor - Google Patents

Abstract

A two-dimensional position sensor comprising a substrate with a sensitive area defined by a pattern of electrodes including electrodes for determining x-position and electrodes for determining y-position. The x-electrodes and y-electrodes generally extend in the x-direction and are interleaved in the y-direction. The x-electrodes comprise at least first, second and third groups of elements shaped such that adjacent ones of the elements of the different x-electrode groups co-extend in the x-direction so that the x-electrodes provide ratiometric capacitive signals, thereby providing quasi-continuous x-position sensing across the sensitive area. In addition, the y-electrodes may be resistively connected or arranged in ratiometric pairs to provide quasi-continuous y-position sensing. Alternatively, the x-electrode groups may be interdigitated to form pairs of x-adjacent blocks of differing area to provide stepwise x- position sensing in combination with stepwise y-position sensing provided by the y-electrodes.

Description

200813797 - .; , · - . - - - ; . · .... . : . , . . - . · · - . - ...... : . , -'· . .- λ : .- · \ . Round _ _ - circle [Technical field of the invention] '- .. ' - . . . The present invention relates to a two-capacity capacitive positioning sensor typically driven by a human finger or a stylus. Example devices include touch screens and touch pads, particularly liquid crystal display (LCD) or cathode ray tube (CRT) and other types of displays, stylus input tablets, such as in devices for feedback control purposes, .. ' ^ ' ' ' . . ' or those touch screens and touchpads above the encoder.

[Prior Art] The description of the stylus or touch input of the machine can be traced back to at least 1908 牟, as embodied in the patent 'DE 203, 719 [1]. " Touch screens and touch devices are becoming more popular and popular, not only for personal computers, but also for applications such as personal digital assistants (PDAs), point-of-sale (POS) terminals, electronic information and ticket kiosks, kitchen appliances Various other devices like that. These devices continue to evolve into lower-priced products, and the result is a constant reduction in production costs while maintaining high levels of quality and stability. Touch screens are usually divided into two types: capacitive and resistive. For capacitive devices, the term "2-dimensional capacitive sensor" or "2DCT" is used to unrestrictedly refer to at least two-dimensional coordinates (flute) that can be reported by the capacitive sensing mechanism in relation to the position of the object or body part. Touch surface, touch sensing pad, proximity sensing area for surface or volume of Carl coordinates or other coordinates, position sensing for mechanical or feedback systems; display on LCD, plasma, or CRT screens Screen overlay touches the 200813797 screen; or other types of control surfaces, and more. ......· . ; . .:: ... . . For resistive devices, the term "2-to-resistance sensor" or "2DRT" is used to refer to pure Touch screen or stylus input device for direct current (8&1 ¥ 111〇) ΰ \ ^ The term "2DxT" refers to 2DCT or 2DRT type components. . . . ---. ' .

The term "touch j" means a touch or proximity of a body part or a mechanical part of a capacitive signal that is strong enough to produce the desired output. In the sense of "t2", in 2DCT it is possible to cause an appropriate response due to the close proximity of the object. In the case where the generated capacitance responds, the touch can also mean "pointing" to 2DCT without direct physical touch. • “元#Yelement” refers to 2DCT or 2DRT island food—source: “salty. The term "electrode" refers to the point of attachment at the periphery of the component. The term "strip" refers to a wire conductor that is a component of an element and has two ends. The strip can be a wire. The strips can have a considerable gaIvanic resistance, and the wires have the least resistance. If the component it exhibits is physically curved, the strip will also be physically curved. The term "pin cushion" refers to any change in the letter from 2DCT, whether it is a parabolic, barrel or other shape of a 2-dimensional deformation. Many types of 2DCT are known to suffer from geometric distortions classified as "pincushion distortion" or "hyperbolic" or "parabolic", so that the reported contact coordinates have errors due to electrical effects on the sensing surface. These effects are described in more detail in various other patents, for example, in Pepper 200813797 U S 4,1 9 8, 5 3 9 [ 2 ], which is incorporated by reference. In U.S., Babb et al., 5,940,065 [3] and 118 6,506,983 [4], can be used to see an outstanding summary of the known causes of geometric distortions and solutions. US 5,94〇,065 [3] briefly describes the two main categories - : . . . . . - - . . . - - - . _ _ _ _ . . . Or the electromechanical side of the design or modification of the connected electrode '*'. - method; 2) the mathematical modeling method to correct the distortion. Electromechanical method ...... --- . : ... ' ..... . -..

Edge processing of planar components: Kupfmuller et al., in US 2,3 3 8,949 [5] (1940 application), used a long rectangular tail on X and γ to solve a 2DRT electronic diagram around a small usable area. The edge distortion in the middle of the letter. Kupfmullei* took further steps to cut the four trailing-tail slots into strips; these strips did not invade the user input area, but did increase the resistance to current in a non-uniform manner along the sides parallel to the current. The role. This idea reappeared in a slightly different form in Yaniv et al.'s us 4,827,084 [6] almost 50 years later. Kupfmullei: Still the most similar prior art to the present invention.

Becker first described the 2DRT electron map in US 2,925,467 [7] to eliminate nonlinear edge effects by using edge materials that have much lower resistance than the inherent sheet resistance of the element. This method can also be used to form 2DCT 〇

A method of linearizing 2DCT by controlling the edge resistance structure of an element is described in the patents US 4,198,539 [2], US 4,293,734 [8] and US 4,3 71,746 [9].

Talmage, in US 4,822,957 [10], describes a combination of 2DRT 200813797 components and a pick-off sheet with Pepper's Weng _ - . . . . . . . . . . . . . . . . Numerous other such patents have been published, using a variety of methods, and this is still a fertile ground for new patents. It has been found that these methods are difficult to develop and reproduce, and they are susceptible to errors caused by differential heating and production problems. A very small amount of localized error shift can result in a large change in the coordinate response. The low resistance of the patterned edge strips causes problems with the driver circuit, forcing the driver circuit to consume more power, which is much more expensive than other measures. There are many patents that reference the patents of pepper, and these patents claim to do something similar. The improvement given by Pepper et al. does not necessarily outweigh Becker, because at least the “smear-to-dip solution is easier and more reproducible for production.” Side resistance with wire components: Kable at us 4,678 8691 In [n], A opens a 2-dimensional array for stylus wheeling. On both axes, a resistor V is used. High-conductivity electrode plates are connected to these chains. The electrodes used for detection have this. It is not the same as the uninteded resistance of the two wells, and the detection L is interpolated according to the signal generated between the two adjacent electrodes. The resistance of the non-λ ^ causes a small amount of pincushion distortion in the response. This patent also describes an algorithmic measure to compensate for the micro-custoid distortion caused by this technique. The Kable method does not work unless the touch of the touch sensitive ^ a button is used, ie it does not describe the response to the finger of the person's car 4 . Kable's patent needs to be bridged between conductors, so it is necessary to have at least three structural layers (conductor layer, insulating layer, conductor layer ^ country _ country _ country. ^ + . . _ . · '. - - · 夕 Active Edge Electrodes: Turner has US 7 3,6993 17 active-resistance uniform-resistance screens with multiple electrode connections on all four sides of 200813797 to linearize the results.

Yoshikawa # Λ ^ uS 4,68 0?43 0{ 13 ] t a ^ Wolfe ^ Still 5,43 8,! It is proposed in Fig. 6^4 to make the electrode points so as to help reduce the pincushion domain change by reducing the interaction of the electrode turbulence from one axis with the electrodes on the other axes. Although the component is a simple chip resistor, this measure involves a large number of active electronic ports (such as a linear array of two-plate or MOSFET) at each connection point very close to the 7G piece.

Nakamura is similar to Wolfe in US4, 6495232 [15], but with a resistive inductive stylus. The original strips are drawn in the order of %: Greanigs et al., 4 $ 4, 686, 332 [16] and US 5, 149, 919 [17] t, Boie et al. in US 5, 463, 3 88 [18] f, R & LandmeierjUS 5, 381, I60[19]t proposes a method of sensing the elements of the strip conductors that are alternately driven and detected alternately along the X and Y axes, which is used to explain the position of the finger contact or contact with the sensing device and the stylus. This structure involves multiple layers of materials and special handling. Greanias proposes to use interpolation between strips to achieve higher resolution on both axes. Both require three or more layers to allow for the bridging of the conductors within the component. Both rely on the measurement of the capacitance of each strip without relying on the amount of cross-convergence from one strip to the other. B〇ie also proposed a special concession surface. . . . . .. ;'

Binstead, in US 5,844,5 06 [20] and US 6,1 3 7,427 [21], proposes a touch screen that uses discrete thin wires in a similar manner to that proposed by Kable, Allen, Gerpheide, and Greanias. Binstead made 200813797 transparent with very thin row and column lines. This patent also proposes to use the Greanias method of interpolating between the V-lines of the electrodes to achieve higher rates. Scanning relies on the measurement of the capacitance of each strip to ground, without relying on the amount of cross-coupling of one strip to another. EVanS also describes a system in which the L-axis sequentially drives the strips in US 4 > 7n, 222 [22]. This system also uses an external array of capacitors to derive the induced signal by the capacitor divider effect. Interpolation is used to obtain a higher resolution than can be obtained with strips alone.

Volpe, in Us 3, 921, 166 [23], describes a discrete key mechanical keyboard that uses a capacitive scanning method. There are sequentially driven input rows and sequential sensed columns. Pressing the keypad to increase from -row-to-column W's so that n-key rollover can be achieved; without interpolation, although not 2DCT, Volpe predicts the scanned strip element 2DCT technology. The applicant's own US 6,452,5 14 [24] of the present application also pertains to this type of sensor.

It is disclosed in US 5,181,030 [25] to a 2DRT having resistive strips that are under pressure to converge with the resistive surface at the location of the sense contact. These strips, or faces, have a one-dimensional voltage gradient applied thereto so that the position of the contact points on a particular strip can be easily identified. Each servant strip requires at least one electrode connection dedicated to it. Original strips that have been scanned continuously: Gerpheide et al., in Us 5, 3 05, 01 7 [26], propose a computer touch device based on contact pad capacitance, which uses multiple insulation layers. An orthogonal array of overlapping metal strips. Scan lines are arranged in a repeating pattern to minimize drive 10 200813797

Dynamic circuit requirements. The looping feature of the inventive wiring prevents the 2DCT from having to determine the actual position and what is important is the relative motion sensing touch panel. Gerpheide proposes a signal equalization method between the opposite signs of the two coarse positions at the contact position. • · · · · · ' ' ' '.. Strip element read in parallel: AUN et al. still propose a kind of parallel readout by analog circuit &

Elements of the belt This patent claims a lower chewing sound and faster response time than sequentially swept elements. This method is particularly suitable for replacing the touchpad of a mouse, but it is not suitable for larger sizes. As with the case of all strip elements 2D, multiple structural layers are required. Α11〇η ϋ requires large scale integrated circuits and a large number of connecting leads. It uses interpolation to achieve higher resolution than is achievable with these numbers of original strips. In WO 04/ 040240 [28] "Charge Transfer Capacitive Position Sensor" M t Philipp, together with Figure 12, illustrates the use of a number of separate resistive strips to create a touch screen. The strips can be read in parallel or sequentially, since the connections to the strips are independent of each other. In addition, in conjunction with Fig. 6, an explanation is given between adjacent galvanic electrode elements and objects such as fingers. The interpolated convergence. W0 04/ 040240 [2 8] is incorporated herein by reference. In WO 2005/020056 [29] Philipp describes a positioning sensor 'this positioning sensor has the first and the first A two-barrier bus bar, separated by a non-uniform conductive zone between them (see the 20083 diagram of the 11 200813797 application: in a non-uniform conductive zone due to contact or proximity to electricity) The current flowing to the bus bar j to be detected by the detecting circuit, for example, those induced by the driving circuit, are preferentially propagated in one direction, so that the pincushion distortion in the position estimation is largely limited. The system is in a single direction. Such one-dimensional distortion can be corrected by application. The positive polarity is not simply corrected, thus avoiding the need for complex vector calibration 1 for sensing the electricity behind plastic or glass panels or other media. Today's 2-dimensional pattern of conductive material, which can be used as 2DxT, whether it is presented as a decoupled screen or as a "touch panel, in the form. The conductor can be 疋 clear" such as tin oxide (ΪΤ〇) Formed to provide a suitable transparent cover for the display or other back. - Violation measures apply to the diagonal of the mobile phone until a relatively small screen of approximately 2 inches (50 homes) can work well, but for example In the case of larger screens required for some white enamel appliances (such as microwave ovens), performance is reduced. In addition, with this design, finger shadowing may cause problems. Art in US 6,288,707 [30] Philipp A capacitive positioning sensor to be used as part of a computer touch device is described, which employs a ratiometric (rati〇metric) Capacitive sensing technology. An array of patterned metal electrodes is disposed on the insulating substrate layer, wherein the geometry of the electrodes is selected to produce a variable capacitance output as the user's fingers move across the electrode array. Figure 1 reproduces Figure 4 of US 6,288,707 [30]. A patterned gold-lip electrode array is placed over the insulating layer, wherein the geometry of the electrode 12 200813797 is chosen to be used by the user: the finger moves across the electrode array Capacitance output. This arrangement consists of two dimensions of each dimension of the electrode group. The group of X-axis is triangular, which makes it easy to see and understand that the group of triangles 1 are all electrically connected together. The second group 2 is also connected together to the output busbar labeled X2. The position of the hand relative to the X axis can be determined based on the signal from Χ1>χ2. The capacitance is directly proportional to the surface area, and since the upper sheets are combined on the left side to have a larger area than the sheet attached to the crucible 2 (and vice versa), a sufficiently large finger surface is provided to provide sufficient signal strength. The proximity distance is at the top of the pattern to obtain the ratio of Χ1, Χ2 or Χ2/ Χ1. Twist the group to the Υ1 and Υ2 busbars. The group connected is also a ratio system, which is different from the X group. The Υ group includes alternating γ 丨 connections and Υ 2 连 stripes ′ labeled 3 and 4, respectively, with a y-axis that varies with the location in such a way as to produce a ratio of the area of γι to γ2 that varies smoothly with position Y. The sum of each pair of adjacent y-axis strips 3 and 4 is such that for any two pairs of strips, the sum of the capacitances is the same, ie, the strips are + then, as the user moves along the y-axis The capacitance ratio measured in the same manner as the ratio of C(xi) / c(x2), that is, the largest value becomes a fractional molecule. However, this design is only limited in the 2DCT dimension in the X direction. Arg method

Nakamura describes the use of a check to produce a scatter in 118 4,650,926 [31]. On the first row. The ratio of the user's ratio to the large table of XI is sufficient to ensure that the positive film is connected. Although the square of the square is t, the table is constant, and the table is provided for each pair of fingers. The original 2D coordinate data is corrected to perform a numerically positive system such as the electronic map system such as the copper gossip. (1) (4) In US 5,1〇Γ^ such as graphic input + Figure t

McDermott's numerical method for correcting 2DXT in US 5,157,227 [33], which is used during operation to control one or more polynomials to correct the position of the contact reported through the segment or quadrant.

Babb et al. proposed in 113 5 940, 065 [3] and 655 〇 6, 98 3 [4]

A numerical method of linearizing the slice elements of a 2 DxT mean sentence using coefficients determined during the learning process does not require segmentation by a segment or quadrant, and is based on individual cells in order to correct even small process variations. The method disclosed by Babb is complex, involving '8 coefficients, and fourth-order polynomials. The coefficients of these methods must be determined by a rigorous and time-consuming calibration process'. In the tests conducted by the inventors of the present invention, it has been found to be normal. In practice, 甩 (order polynomial is required to obtain an acceptable degree of accumulation, and the knot is still very susceptible to the effects of very slight post-reading changes due to thermal drift after calibration. In particular, it has been found that the corner joint is The biggest reason for long-term coordinate fluctuations, because these corner connections connect the size and mass to act as singular points with high gain factors. Moreover, this method of numerically correcting requires high-resolution digital conversion so that Producing even the simplest resolution turns out. For example, it has been found that a 14-bit ADC is required to provide poor bit coordinate results. The amplifier system and ADC ^ m ^ m ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ - 14

200813797 Problem Although extensive in the field of turnouts has been done previously.. · · · · - . . . It is necessary to develop large-area, transparent, small-distortion 2 D C T with a small number of external connections. SUMMARY OF THE INVENTION The present invention provides a two-dimensional positioning sensor, the device comprising a substrate having a sensing region, the sensing region is composed of an electrode of the position and an electrode for determining the y position, wherein the X electrode and the y electrode are generally along The X direction extends and is wrong, and wherein the X electrode includes the first, second and the first elements formed such that a portion of the regions of the first and second sets of elements coextend in the X direction, and the second adjacent element is On another portion of the sensing region, the X electrode along the X side provides a corresponding number across the sensing region in the X direction. The X electrode may also comprise a fourth set of elements, and the principle that the adjacent elements of the element in the further portion of the sensing region provide a corresponding ratio across the sensing region in the X direction in the further portion of the sensing region may be extended to fifth and more lacquering. In fact, this principle can be extended indefinitely. However, the external flanks will become thinner and thinner at the peripheral edge of the sensing area, so it is impractical to add an X electrode set to some extent in consideration of noise. Work, but still have low cost, single layer, this two-dimensional positioning sense includes the pattern definition for determining the X pole, and the three groups of components in the y direction, the adjacent components in the induction and the third group The components are coextensively extended such that the ratios of the capacitive signals are extended by the third and fourth sets such that the X 剌 capacitive signal. Group of X electrodes. In fact, the thickness of the electrode feed line and other related factors 15

In the embodiments of the present invention, a plurality of external conductive lines connected to the sensing electrodes are disposed, and the external conductive lines are connected to the respective conductive lines of each of the X electrode sets; the plurality of conductive lines connected to the poles. In one set of embodiments, a central spine extending from the periphery of the sensing region is configured to interconnect the elements of the third set of x electrodes from the middle ridge, thereby allowing the second set of x electrodes to pass from the sensing region. External external contact. Preferably, the single ridge provided at the top or bottom of the sensing area continuously satisfies the middle of the sensing zone from top to bottom. Alternatively, it is also possible to separate the middle ridges with two external contacts on the periphery of the sensing area, one on top and one on the bottom of the sensing area. When the middle ridge is disposed, the corresponding y electrodes on both sides of the middle ridge at the same height J position can be connected in common to omit the connecting line of the connecting portion. For example, a single external connection line may have conductive traces disposed on the periphery of the pass region and y on either side of the t-ridge; in embodiments having a mid-ridge, the periphery of the plurality of external sensing regions may be connected to the electrodes, these Conductively connected to the ridges of the outer conductive line and thus in contact with the third set of X electrodes symbolically distinguishes the sensing into left and right sides; conductive lines connected to the first group of elements on the left side of the middle ridge; and the first a conductive line connected to the element on the right side of the middle ridge; a conductive line connected to the element on the left side of the middle ridge; the peripheral path of the corresponding area includes: and the element extending along both sides of the y direction in the y direction Can be extended, in this external contact, in this case in the sensing zone L (ie the same y with additional external surrounds around the sensory lotus connection. The part of the conductive line includes: with the line, the middle X of the X-electrode in the group X Two sets of X electrodes in the electrode The second set of X electricity 16 200813797 The element on the right side of the middle ridge is connected to the conductive conductive self-polar connection of multiple conductive lines.", X electrodes can be constructed into a variety of extensions. Douliu For example, the gates of the respective X-electrode groups t ^ ^ ^ ^ ^ ^ W coexist to have a complementary degree of refraction and a common signal at a common extended distance. Alternatively, a total of the respective x-electrode groups Having a block at a distance extending together in the X direction to provide a ratiometric capacitive signal. For example, referring to an embodiment having a middle ridge and a _th, first, the first and third components can be respectively two Orienting or cutting, and the second component has a beveling with the first and second -, -^ π pieces. As an alternative to the alternative, in the same implementation, the first and third components can be 椟/ 刼 面积 分 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中 中Information. This is a simple and reliable way, in which the ground is inferred from the line where the signal appears. If there is a significant signal on the wire, it can be used more in J % 1

Like a method. Typically, there will not be enough external poles for an external line. Therefore, it is necessary to make the conductive metal traces of the adjacent y electrode groups group the two y electrodes into two, three or four. The y-electrode can be extended by a resistive element, not "far,'way; and with y. The elements may be provided in a ratio of capacitance-expanding elements in their area-changing adjacent and third-group X-electrodes from the peripheral and mid-ridge obliquely complementing the different sides of the embodiment or from the periphery and having One and the first and/or y-position information for the y-direction is simpler than one or more of the leads or some other proximity to enable each y to be routed to the external line. For example, % can be made to provide a capacitance signal through an external conductive line output ratio connected to a subset of the y1 17200813797 poles, thereby providing positional information in the τ direction. In this implementation, the y-electrode is connected to form a so-called 'sauder' as disclosed in wo 2 〇 04 / 〇 4 〇 240 [28]. Specifically, the resistive strip is covered in The portion on the electrode is short-circuited by tying with the conductive electrode, while the portion extending between adjacent factory electrodes provides a resistive interconnection, such as w〇2〇〇^ 040240[281^^ 6 ® a ^ ^ ^ ^ ^ ^ J5*| 4 At the end of each part of the sliding part, the outer phase of the outer phase of the °P line (one connected to the uppermost y electrode 'the other is connected to the lowermost and the middle Υ electrode) (pick off) ratio signal. It can be applied to the higher precision by selecting Tianshi β # H and intermediate sensing (that is, adding one or more additional force σ to the middle y electrode). This approach is quite flexible, because the number of external lines used by General 7 is limited and subject to the 'typical number is' root. If you use 漘 乂 乂 to connect the X electrodes, left, once the necessary amount is allocated The external line is connected. The available external lines under '' can be used for all y electric y electrodes. The groups, each of which are directly adjacent, have at least two y-electrocapacitive signals, and the ratio of the external conductive lines from the ^ electrode connection is between the ratios. However, if χ is directly adjacent, there is no X-electrode μ ^ ^ ^ ^ t ^ * y ^ ^ ^ Λ ^ ^ ^ ^ ^ This kind of y-electrode based on the y-electrode can have an inserted x-electrode. The ratio of the different vertical widths of the pole is 18 200813797 US6 It is disclosed in '288,7〇7[3〇], _Electrical_ can be formed by a transparent material such as indium tin oxide (ιτ〇) or any suitable dry material. The substrate can also be made of transparent material. Forming, such as glass or transparent plastic slanting ancestors, such as plexiglass such as perspex (polymethyl methacrylate, PMMA), or

The cycloolefin copolymerization potential of ZeonorlTM) or Topas (TM) is also used in some applications where the electrode and/or substrate are opaque. It should be understood that the X and v ancient A days, and the y direction 疋 are defined by the appropriate coordinate system, and the most common Cartesian coordinate system orthogonal to the 疋X and y directions, of course, the X and the direction can also be non-positive. The angle of the father. In addition, for the sake of convenience, there are j in the following to refer to the L and y directions as horizontal and vertical directions, respectively. Of course, this does not have a special deductive space such as the direction of gravity. 2 Representative Sensing Area Drawings The flat transparent plastic sheet is typically a tin oxide or other schematic plan view of a portion of the electrode pattern that is generally illustrated as showing the 2DCT of the first embodiment, wherein the electrode pattern defines the package. The electrode array is listed on a substrate which is not shown but has an upper surface thereon. The substrate may suitably be a flexible material such as polyethylene terephthalate (pET) or the like. Insulated. It is formed with a resistivity of several hundred ohms/square (ITO). This is a transparent material, so it is suitable for displays where the button or other stencil should be visible. 'The electrode pattern can be deposited or removed by any suitable guide. 19 200813797 Materials are formed. The deposition may be, for example, by 1-phase deposition or color grid printing. Removal may be, for example, by laser or chemical re-engraving. The X electrode and the y electrode generally extend in the x direction and are staggered in the direction of the table. The shape of the y electrode 10, 12 is simple and straight. The strips are elongated rectangles, and the X-electrons 14-24 have a beveled triangular shape. First, the X electrodes are described in more detail, and then the y electrodes are inserted. 24' is arranged on the left and right sides of the sensing area. The double-sided beveled triangular electrodes 16 and 22 are arranged in an eight-in-one manner, and the knives extend inwardly from the left side and the right side of the sensing area toward the center. The second electric x-ray t 0 , and the X-electrode 18 20 extends from the integrally formed middle ridge 26 toward the left and right sides, respectively, and the neighboring elements of the second group of components 1 4 v 1 6 and 2 4, 2 2 test 丨丨 y* dp η γ Between the outer portions I and IV of the sensing region, respectively, in the X direction, respectively extending toward the left and right sides of the sensing region, the adjacent elements 16 , '仟 18 and 22 of the elements of the second and third groups 2〇 in the inner part of the sensing area on both sides of the middle ridge; [j L TTT rirt 11 and the inner side of the crucible are extended together in the X direction. In this way, each The X-electrodes of the first and second groups or the j-electrodes of the second and the second V-shaped two-parts of the co-extension of the 丨/ 郇 叙 形成 形成 形成 形成 形成 形成 形成 形成 形成 形成 形成28] The description of the ▲ Tian, the code package in the township test in the reference [28] of the 'ls 士 士月动+疋[28] describes the operation of this sliding part from the factory test document 0 The content is quoted in the reference. It should be read in the case of the inside of the ^ as the actuator (typically the finger of the man and the size of the 4 eyes), properly designed to raise 20 200813797 • · · · · · · · · · ...·.· • _ - ...···· - .... for extending across them in the x direction (ie, in the direction of the intersection The ratio is a capacitive signal. .... : . . . ....... ” .... . . . — The left side double-sided beveled X electrode 16 passes near the left edge of the sensing area near the left edge of the X electrode 16. The conductive lines arranged in the y direction are externally connected to the external flail line X1. It is to be noted that the double-sided bevel electrodes have pad regions 33 at their left ends for facilitating such external connections. The left-side beveled X electrode 14 is commonly connected to the external connection line X2 by a conductive line 32 arranged in the 7 direction at the left edge of the left peripheral peripheral electrode 14 of the sensing area. The tapered x-electrodes 18 and 2, which extend from the middle ridge 26, are of course connected together by the middle ridge 26 and have electrical contact with the periphery of the sensing area through the middle ridge 26. The external connection line X3 is connected to the middle ridge through a conductive line 34 which is in contact with the middle ridge 26 of the lining of the hull. The X-electrode 24 on the right side of the slanting edge is arranged along the right edge of the 戊 、 and the right edge of the pole 24 at the right periphery of the 戊 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ The I green path 36 is commonly connected to the external connection line X4 in a similar manner to the corresponding left X electrode 丨4. The X-electrode 22 on the right side of the double-sided bevel is arbitrarily arbitrarily arbitrarily arranging the conductive line 38 in the y direction at the right outer edge of the sensing area, and the electrode is arranged in the y direction. A similar way helps ^ to connect to the external connection line χ5. The outer-side connection ^ mode 'X electrode 14'24 externally contacts 5 external connection lines Χ1_Χ5. _ j ^ yt ^ 26 10 ^ (4), the straight shape of the handle sheet, and 21 200813797 and arranged on the left side of each phase Zheng group Lei i A i 〇丨 between each adjacent group of X electrodes 20, 22, Ββ . The y electrodes 10 and 12 are connected by a conductive line into a group of vertical phases, so that the y-score of the sensing region is limited to gold in this embodiment... the thorn is connected to the interconnected 1 electrode The vertical distance corresponding to the vertical range. This combination of the y-electrodes reduces the y resolution, but the number of external connection lines required for the y-Thunder 仏~ y electrodes is small -# ο ^ ^ ^ it ^ t, t T ^ yt ^ M ^ The # y electrodes are commonly connected to a conductive track 50 forming part of the external connection line γι. Although not explicitly shown in the drawing, each pair of electrodes at the same height is commonly connected by a kitchen trajectory. The upper group includes three pairs of Y electrodes ' although the figure shows only the first change ~ / pH pulls [pair, they are connected to the track 52 for reconnection to the external line Y2. A total of seven sets of y electrodes are connected to their respective external lines ¥147 via the associated conductive traces. In this embodiment, the y value is derived from the seven external connection lines. For a simple control algorithm, this provides only the y resolution of the seven masks, although through the adjacent y lines. Interpolation can be connected to possibly additional y resolution. In general terms, this 2DCT provides a quasi-continuous χ resolution 'combination through a common arrangement of sliding portions arranged in four coverage areas across the width of the sensing zone along the χ direction to A stepped y-resolution is provided by connecting the vertically adjacent 3, 4 sets of horizontally extending electrode strips. A total of 12 external connecting lines are used, 5 for 1'7 for flying, and the middle ridge and the beveled electrodes on both sides are combined to allow the sensing area to have a larger range in the direction to provide a larger capacity. It is a transparent sensing area, and there is no external 22 200813797 connection except for the periphery. In addition, 'this electrode pattern design means that the finger shadow effect is significant' because any centroid drift of the capacitive letterhead due to the physical position of the finger is limited by the lateral extension of the electrode. For example, for this design, it can be manufactured A device in which the diagonal of the sensing area is 々 inch (150 mm) ^ Fig. 3 is a thousand-sided view of the example of the 2DCT prototype (ie, the actual size) designed according to the first embodiment, The electrode pattern and the area in the electrode pattern area: the first connection layer connected to the T electrode are covered first by the dotted rectangle at the bottom of the figure. The figure shows the outline of the finger approximately proportionally. Obviously, the electrode pattern of ITO usually covers the main part of the substrate 4〇.

= In this example, the pattern covers a rectangular area that matches the area of the touch screen or other device. The four footprints I-IV of the x-electrode described above are also indicated. The generally rectangular substrate also has a neck 42 that projects midway along the left side of the substrate. The neck 42 is used for external contact as will be explained in connection with the next figure. On the left side of the substrate 40, that is, on the side adjacent to the neck of the neck 42, it can be seen that the external connection line link Y 2 - Y 7 forming the y electrode through the trajectory 5 0 - 6 2 ' passes through the trajectory 5 2 - 6 2 are each connected to the three false y. electrodes "and Y1 is connected to the four electrodes by the wire 50, and there are a total of 22 y electrodes in the left half of the device (ie, the left half of the middle ridge 26) There are 22 y electrodes that are completely aligned for a long time, except for the four at the bottom, which are connected to each other. They are all connected together by a pair of false ones. The trajectory of the right side of the substrate is connected to the line γ 1-Y7. 50-62 bypasses the top end of the substrate to the base, side 'to make the left and right corresponding y electrode pairs and common connections 23

The group of y electrode pairs of 200813797 is joined by a single conductive track. Figure 4 is a plan view of the 2DCT prototype of Figure 3, showing the pattern and the second second connection layer that is connected to the X electrode at the periphery of the electrode pattern area, and connecting the external feed line of the y electrode to the connection shown in Figure 3. . An insulating layer of the first and second layers shown in FIGS. 3 and 4 for providing an insulating region for preventing electrical contact between the first and second flail layers and a portion for securing the first and second connecting layers An open area that is in electrical contact. First, the y electrode connection is described. The seven conductive tracks extend in parallel along the upper portion of the neck 42 to the left side portion of the substrate 40. Then, they are spread out and terminated with a portion of the enlarged contact pad 46 of the first wire 50_62 for each y-electrode connection Y1-Y7 of Fig. 3, so that the y-signal can be passed through and externally Contact line 44 is fed in and out. There is an open area at the insulating contact pad 46 to ensure electrical contact between each of the wires 44 on the second tie layer and each of Y 1-Y7 5 0-62 in the first tie layer. An insulating region on each of the left and right sides of the substrate and the y-electric Y1-Y7 trajectory is also placed over the ITO pattern in the insulating layer. The case of the X electrode connection will be described below. For external connection 5 conductive lines 30-3 8 have been described in connection with Figure 2, seen in the second connection layer of the prototype in Figure 5. As can be seen, the X-electrode connection is provided entirely on the second tie layer, which is different between the first and second tie layers. That is, the electrode connection layer is formed, and some portions of the other electrodes are interposed between the y electrodes. 4 4 X Each of the Y1-Y7 wire wires in the layer of the electrode group directly above the connection layer in the main region has coverage. The y-electrode of the pole-shaped X1-X5 and visible can be seen, the line 24 200813797 3 Q-3 8 bypasses the bottom of the substrate 40 and then synthesizes five parallel: fluorine ^ neck convex 42, in This is where it meets with seven parallel y-electrode wires: the palpebral 垂直 is placed vertically above each side of the ITO area and is connected to the χ electrode meal electrode and the pad is isolated from the y-electrode connection trajectory by the insulating 赓. Fig. 5 is a schematic diagram showing the polar system level of the multi-channel inductor circuit 140 used in conjunction with the touch panel of the first embodiment. In this figure, sensor circuit 140 is depicted as having a single capacitive electrode input Yn from ~^X.x2, X3, X4, X5, and representing seven y-electrode inputs. In fact, there will be 7 such lines, one for each y-electrode input, providing a total of 12. The charge control circuit 1 57 uses the charge switch 156 connected to the reference voltage line 758, while charging all of the capacitive inputs χΐ-χ5 and γ1_γ7. In a variant, the charge control line 157 is omitted and the charge switch 156 is replaced by a pull-up resistor that constantly connects the individual electrodes to the voltage source. The resistance of the pull-up resistor is chosen such that the RC time constant is greater than the discharge interval used to discharge the layer to the charge detector array. This resistance value can be, for example, between 15 kohm and 25 kohm. Channels Χ1-Χ5 and Υ1-Υ7 act simultaneously when transferring charge to the charge detector, as shown, by using a single discharge control line 163 to drive discharge switch 162 to discharge all charged electrodes. After a charge transfer or a series of charge transfers, the analog multiplexer 182 selects which of the capacitor outputs of the charge detector is to be fed to the amplifier 1 84 and the ADC 1 86 under the control of the microprocessor 116. And thus to the external control and data acquisition circuitry, typically a PC. In addition, the reset switch array 1 8 8 controlled by the reset control line 25 200813797 1 1 0 is turned on after each pulse or pulse train: .... Λ . ' ... .. _... ... to reset the capacitive input to a known reference value (eg ground) I. It is well understood by those skilled in the art that many circuits of each channel sensor have been omitted from the figure for clarity. element. In the case of X-channels Χ1-Χ5, these channels need to be driven, and the signals need to be processed, taking into account the use of prior art patent publications in Haraid Philipp (such as references [28] and [30]). The "sliding" approach is required from these signals. . . . ' -. .., .

The ratio information obtained. A more detailed description of the sensor circuit and the method of driving the inductor circuit with a pulse train can be found in the prior art patent publication of Har Aid Philipp, such as references [28], [30] and [34]. In summary, corresponding to the first embodiment, it can now be seen that this design has a centrally symmetrical electrode pattern, and the middle ridge divides the sensor area into two halves. The mid-ridge forming a "Christmas tree" branch is a single-sided beveled electrode extending from both sides of the trunk, coextensive with the second beveled portion of the two sets of double-sided beveled electrodes on the side of the sensory area. The double beveled first beveled portion is coextensive with the other two single-sided beveled electrode sets that are also externally connected to the side of the sensing region. These electrodes are induced in a square-up direction, and they are vertically staggered with strips that are externally connected to the sensing I and the linear sensing electrodes. The green connection is operated, and the five are used for horizontal sensing. They are connected to each (4) a. The 3 or 4 worms of Xiang Xiang are used as the helmets, and the vertical adjacent groups of the singers are far-reaching. The vertical resolution reduces the number of external connections* (10) at the expense. In addition, it also shows how the structure has _ 严田孤戈, 啕 4 layers, two layers for connection 26 200813797 _ . - . . - ..-.................., an insulation The layer is used to control the connection between the 々Λ 埤 layer of the two sisters and the 电极 layer, and an electrode pattern layer which can be omitted and formed directly on one of the two 哔 层 layers. The second caution green s η of the invention is described by way of example. In most respects, the second embodiment is the same as the first embodiment 柏 1 1 ′. The same ΙΤΟ electrode pattern is used. In addition, the external connection of the X electrodes is performed. The electrode pattern layer is identical to the first conductive layer. The difference between the embodiment and the first embodiment is the y sensing. In the first, the electrode strip provides discrete Position information, where the resolution is defined by the vertical spacing of the v-leis 仏丄 y electrode strips, and the resolution is in the case where a plurality of adjacent y-electrode strips are connected in common to reduce the external connection line Vertically connected by a group of commonly connected thunders such as ramming y electrode strips In the second embodiment, the same y-electrode row 丨7 is arranged, that is, the horizontal strips are interposed between the X electrodes, but the y-electrode strips are electrically connected to each other to form a so-called "sliding portion, arrangement [ 2 8] 'Quasi-continuous position information in the vertical direction can be obtained by connecting to the appropriate s * old external test 1 circuit. Fig. 6 is a schematic plan view showing a portion of the common snow pattern of the 2 D C T and the y connection of the τ & soil-shell embodiment of the present invention. The human finger is also shown to scale generally. In order to clear the uncle, I have omitted the X electrodes and their external connection lines. The left half side line 7 of the sensing area of the y electrode strip 10 (the middle portion of the figure, each of which is three in the figure) having a plurality of vertical offsets similar to that of the first embodiment is shown in the figure. 〇 is connected to the strip of the outer Qiu Yumu, which is electrically conductive, that is, the gold Y of the vertical resistor 72, and the y electrode strip 10 is passed through 5 丨 to the connecting line... 4 of the second or fourth y electrodes The external connection 27 200813797 is connected to lines 54, 6〇. Electrically, a resistive path between the resistors 72 and their vertical y-electrode strips 10, such a resistive adjacent conductive outer connecting line 54 "and 56, 56, (on any pair of adjacent lines ( For example, in the case of 54' and 56,), the gas is the same as the sliding portion of the embodiment shown in Fig. 6 in Reference [28].) As explained in the reference [Μ], Ratio ratios are used to detect the y position, such as using measurement circuits as described in reference [28] or other measurement circuits known in the art for this purpose, typically, at least in the second embodiment There are two such external wirings to form the end connections of the sliders. These end connections are preferably connected to the uppermost and lowermost y electrodes, or at least to the 7 electrodes near the top and bottom. It is also beneficial that in these two (four) ^ ^ ^ ^ ^ ^ ^ ^ W ^ ^ ^ ^ ^ # « it ^ t ^

A plurality of sliding portions are formed along the y direction to improve the y-position sensing. For reasons of cost, it may be desirable to limit the external connection to a fixed amount, in which case a plurality of lightning electrodes and a flying y electrode may be provided. The number of external connections may correspond to an external connection that is not used after the line to which the X electrode is assigned a sufficient initial A Δ 疋. . . . ' - - Fig. 7 is a view similar to Fig. 6 showing a τ-like ten-sided view showing the electrode pattern of the modification of the second embodiment and the portions of the y逯 wiring. The y electrode strip 10 and the external connection link 52, -60, play with the social ...., °. The same effect as illustrated in Figure 6. In this variant, it is not to make the 雷立雷阳Ί complete the resistance to connect the vertical phase 28 200813797 Some electrode strips are basically metal, that is, conductive field 1> 4 stacked on the y electrode word to (4) on ^ ^ 丨The electro-optical work is not political, because from the vertical point, these parts are actually ^ ^ ^ ^ ^ ^ ^ yt ^ # ^ ^ ^ , p ^ 0 Λ ^ ^ ^ ^ ^ ^ ^ ^ ^ The same way the resistance is formed |The resistive path between the y electrodes. The resistive strip 74 is made of a high resistance film such as a carbon based thick film. Fig. 8 is a plan view of a 2DCT prototype designed according to the second embodiment, showing an electrode pattern and a first connection layer connected to the electrode at the periphery of the electrode pattern region. Fig. 8 can be compared with the first diagram of the first embodiment. Basically, the substrate 4 having the neck 42 carries the same structure, only = the difference is that every third or fourth y electrode is connected to the external connection line 5, _6 〇, and the first implementation is omitted. The common connection of the examples. The exception is the bottom two y electrodes, which are connected together to the rail line 50, on top. In addition, it is to be noted that the y electrode is provided with a total of six external connection lines Y1_Y6 instead of seven. Figure 9 is a plan view of a 2DCT prototype designed in accordance with a second embodiment showing a resistive layer connecting resistive elements between y electrodes. This layer is unique to the second embodiment and provides a resistive path 74 extending vertically above the end of the outer end of the y-electrode strip on each side of the sensing region. Each of the vertically extending resistive vias 74 is formed by a single wire of a material of suitable resistivity. It is to be noted that this layer is also partially covered with a highly resistive material 75 (gray shading) which covers the peripheral portion of the substrate and the portion of the neck which is adjacent to the substrate body. Electro-type materials are terminated into walls or mines ‘ 29 200813797

The shape 74, > age alternates back and forth throughout the associated resistive Matsuzaka, so that the range of the 'two-material pathways 75' makes the resistive path 75 directly connected to each Thunder recognition.外"The outer end of the y electrode strip" is dawed at the end of the electrode across it. It is not desired to have a viscous V ^ at the end of the electrode, thereby preventing electrical interference with the X electrode. One scheme is a pathway 74 with an alternative I selected by the ^ slave ^^^^^^ ^ ^ ^: solid T ,, how to follow the path of the city-shaped slash saw to avoid the x 'like and jagged The shield is smeared with the end of the work pole. Figure 10 is the 2DCt of Figure 8.

The electrode pattern and the second connecting layer are not available, and the second connecting layer provides the connection with the x electrode from the periphery of the AL m 妓=S in the electrode pattern and the outside of the 7 electrode to the y shown in Fig. 8. The connection on the electrode connection line. This is almost the same as the fourth picture of the embodiment, only the *Y line is less. That is, the x electrode external connection X1-X5 and the associated trajectory 30_38 are the same ' The same is true for the external connection line 44 of the γ external connection Y1-Y6 which protrudes from the neck 42 so as to be connected to the matching rail of the first connection layer (only one less in the second embodiment). Further, the insulating layer has Similar suitable open and insulating regions in the first embodiment. The drive and data acquisition circuitry is similar to that described above for the first embodiment, except that in this case it is required in addition to the X electrode signal. A "sliding" type of processing is applied to the y-electrode signal. As already mentioned, suitable circuits can be found in prior patent publications published under the name of Haraid Philipp, such as references [28] and references [30] and [34]. Figure 11 is a view showing the third embodiment A schematic plan view of portions of the pole pattern. Unlike the first and second embodiments, the third embodiment has no middle ridge 1 as an alternative, and the central portion of the sensing region is double-sided beveled electrodes that are externally contacted on the left and right sides of the device. The electrode group is coextensive with the area bounded by 30 200813797

set. It can be seen from the figure that in the absence of the mid-ridge, the y-electrode l is a single-straight strip electrode that extends from one side of the sensing area to another, which can be only from the left or right side, or part of the Left or right, or redundantly touching from both sides. The X electrodes are arranged between each pair of vertically adjacent factory electrodes, and are composed of 4 sets of X electrodes 8〇, 82, 84 and μ. The erbium electrode groups 80 and 86 are single-sided bevel electrodes extending from the left and right sides of the sensing region, respectively. The X electrode groups 8 2 and 8 4 are double-sided bevel electrodes that also extend from the left and right sides of the sensing region, respectively. The sensitive portion of the sensing region for the resolution of the pupil is formed by three portions in which the different X electrode groups are coextensive, that is, the left side of the sensing region defined by the & electrode groups 80 and 8 2 coextensive in the x direction The first portion I, the second portion II defined by the double-sided beveled electrode groups 82 and 84 coextensive in the χ direction, is in the middle of the sensing region, and is coextensive in the χ direction by the erbium electrode groups 84 and 86. The third part III defined on the right side of the sensing area. In this manner, the X-electrode pairs of each of the first or second co-extends of each phase or the second and the adjacent pair form an external connection. However, the three sets of X electrode pairs, or the third and fourth sets of ruthenium electrode pairs, are a so-called sliding portion as explained in the reference [28]. Similar to the first and second embodiments, it is therefore not shown here that it should be noted that for the X electrode it will be necessary to have 4 external telegrams to bite the line Χ1-Χ4 - for the y electrode, it can be done The first and the first ~ each ~ the same considerations of the application. It is to be noted in this respect that the addressing of the y-electrode for the third embodiment can follow the first or second embodiment. Fig. 12 is a plan view showing the pole pattern of the electric power 31 200813797 which is a 2DCT original crack designed according to the third embodiment. This adopts the pattern structure of the same port of Fig. 12, having an lv row X electrode group and an i 6 cup y electrode strip interlaced with the X electrode group. Still taste the Lord

The substrate 40 has a neck protrusion 4V. ^ disposed on the bottom side, which is for this caution

For example, it is more convenient to distribute. The lowermost 丨I 4 ^ yt ^ j £ m connection (according to the approach of the first embodiment), n# 6 ', the door, and his y electrode strip are connected in groups of three to provide a limit of 5 The y resolution of the λ 雕 政 政 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The y-score can be discerned by modifying the prototype to follow the approach of the second embodiment. Each of the four X electrode sets has its own external connection, Xb X4. Therefore there are a total of 9 external connection lines.炎τ n ^ 苟ί For the sake of clarity, other layers of the prototype are not shown for this embodiment, and the values should be understood to follow the path substantially similar to the first and second embodiments. ^ Fig. 13 is a plan view showing the parts of the electrode pattern of the fourth embodiment. X electrodes 8 2, 8 4, 8 6 and 8 8 are the same as in the third miscellaneous warehouse

The arrangement is arranged to provide three columns of gamma I I x position sensitive X electrodes covering I, II and III. (In an alternative, the X electrodes may be arranged in the first and the first embodiment.) However, in the fourth embodiment, the arrangement of the y electrodes J - is different from the above embodiments. That is, in the fourth embodiment, the & r y electrode is matched with the ratio of the prior art shown in Fig. 1 of the accompanying drawings.

After %, the y electrode structure shown in Fig. 4 of the literature [30] is examined. Winter - . - - In this arrangement, each single turn of the electrode pattern is also ^. The water says that there is a 4 between the rows of adjacent X electrodes 82, 84, 86, 88. 'Adjacent pairs of independently addressable pairs of y electrodes with different areas, so when the right user's finger or other actuator is adjacent to these y electrodes, two adjacent dip can be independently addressable 32 200813797 L, 98 of the zero-pole y group to map the single commission less than 10 poles

The y electrodes each provide a corresponding number that is proportional to their relative area. By varying the area of adjacent pairs of independently addressable y electrode strips within each row, the ratio of these signals can be characterized as the y position within each y-electrode unit. In the example shown, each servlet has 5 y lines, and the area ratio is 1:0, 1: 2, 1:1, 2:1, 0 from top to bottom: where the first false value is presented. A signal derived from a first set 90 of commonly connected y electrodes 92, 94, 96, and a second value appearing from a second set 100 of commonly connected y electrodes 102, 104, 106, 108 signal. The value indicates that for this row the y-electrode is formed only by y from another group, which in this example is the case for the uppermost and lowermost electrode rows of each cell. The first group 90 is externally connected to line Y1, and the second 100 is externally connected to line Ύ2, and each of the other electrode pattern units will require two additional external Y lines. For example, in the inductor using the electrode unit shown in Fig. 13, if there are 1 row of y electrodes and 14 rows of X electrodes, there are 3 units, and 6 Y connections, Y1-Y6, and 4 X connections X1 are required. X4, that is, a total of 10. In principle, any number of y electrode rows can be grouped into one element with two co-addressed y electrode groups. However, in reality, this number will be limited by the precision constraints. The number of rows of y electrode rows per cell is up to 3 rows, but can also be 4 v 5 (as shown), 6, 7, 8, 9, or even more rows. It should be understood that although the y electrical pair is used in the illustrated example, three or more y electrodes can be used on the original shell and the relative area is used to encode the position, in which case Ding 33 200813797 noise level, can be made into a large unit, lang which can be passed through a single

The y-position is connected to the pair to address a large number of rows of cells. . . - - , ' . ' In addition, although it is convenient for the processing circuit to produce a ratio of surface area that varies smoothly with the y position in each cell as in the example shown, in principle this is followed by y The change can be arbitrary with the appropriate processing circuitry. The Y group includes alternating Y1 connections and Y2 flail rectangular strips, labeled 3 and 4, respectively, with a Y-axis width that varies with the location, the change The way is to produce a ratio of the surface area between Y1 and Y2 that changes smoothly with position Y. The sum of each pair of adjacent y-axis strips 3 and 4 is made constant, so for any two pairs of strips, the sum of the capacitances It is the same, that is, for each pair of strips, there is C(Y1) + C(Y2) = C(Y). Thus, as the user's finger moves along the y-axis, the larger capacitance value becomes fractional. Figure 14 is a schematic plan view showing a partial electrode pattern of the fifth embodiment, which is different from the previous embodiments in that the double-sided tapered X-electrode 16 is inverted from "convex" to "concave". Shape, in which the bevel is chamfered in the middle of the bilateral bevel, instead of The middle side is beveled toward both sides. The double-sided beveled shape is shown with reference to the embodiment having the middle ridge 26V, but it can also be used for the design without the middle ridge. The X-electrode 14' of the single-sided oblique slant 18', correspondingly inverted, to form the necessary coextensive with the concave double-sided bevel electrode 16'. Fig. 15 is a plan view showing portions of the electrode pattern of the sixth embodiment. This embodiment can be The first embodiment shown in Fig. 2 is understood in comparison. As in the first embodiment, the sensing region is divided into left and right halves by the middle ridge 34 200813797 2 6 " y is induced by the left and right y electrode strips 1 〇,·,j 2 ” Execution, they are interleaved with the left and right X electrodes 14", 16 (k 20", 22", 24", respectively. It should be noted that the same reference numerals are used to mark the corresponding electrodes. However, the double apostrophe is added to the sixth embodiment. . : - . . . . . . , - ' - " - although the overall arrangement of the 1 and y electrodes is the same as that of the first embodiment, and the y electrode The shape is the same, but the shape of the X electrode is different. The area forming the common extension # X electrodes not having a smooth tapered triangular shape. ....... ... '.

Shape, but has a zigzag shape, in which the X electrode group 1 4 " with 1 6 ”, 丨6, and 18", 20" and 22" and 22" and 24" The parent fork forms 'and thus the adjacent block caused by the coextensive electrode pair defines a specific area ratio for the X position. From the cross finger shape in the y direction

As far as the area ratio provided is concerned, as long as the driving area (for example, the finger contact area) has an appropriate size, as schematically shown by the dotted ellipse on the left half of the sensing area, the desired x-electrode can still be realized. The co-extension of the pay-for-rate signal depends on the change of χ. This interdigitated arrangement may be preferable for sensor areas that are primarily used for button arrays because it provides a stepped view of the width of each interdigitated unit (shown as corresponding X position information in the figure). Change. In this way, you can give the X and y position information a stepped metric for the preferred implementation of the button array. In the example shown, you can see that there will be a ratio in the χ position ratio. 14 steps, 7 steps on each side of the middle ridge 2 6" Sensing this embodiment of the stepwise sensitivity of the sensing area symbolically subdivided into rectangular grids in both horizontal and vertical directions The 邛- and y-electrode configurations provide the opposite in the horizontal and vertical directions. The second or fourth embodiment of the continuous sensitivity is reversed. Figure 16 is a view of the invention according to any of the above descriptions. A schematic plan view of a 2DCT glass touch panel device designed by the embodiment. The front surface of the substrate 40 is carried by a 2" (:: sensor region is attached to the underside of the glass panel II6, and the glass panel is 5 mm thick, band There is a button pattern sheet 110 between the underside of the glass panel 11 6 and the substrate. The button pattern sheet 11 0 is a printed static sheet, but in other cases can be used to dynamically move between a plurality of button patterns The altered display and/or display having a continuous feature such as projecting a sliver that controls a scalar (such as power or time) is associated with control of the device in which the 2DCT is mounted. Typically, the panel 116 need not be glass. Any suitable dielectric material. It will usually be transparent so that it can be integrated with a static or dynamic display. Panels will typically be opened into doors such as microwave ovens, f, upper panels of cymbals or A portion of a larger device such as a casing of a portable workflow tracking device for use by a maintenance personnel on site. For example, the button pattern sheet 110 is illustrated as showing an array consistent with a 5 Χ 6 grid, which is twice in the lower right corner. The size of the button provides a total of 30-1 = 29 buttons. The external connection line from the sensor area is provided to the printed circuit board (PCB) 112 via the neck 42 The measuring circuit PCB is connected to the end of the neck 42 and is also fixed under the glass panel 116. The electric magic U4 connects the measuring circuit to other digital electronic devices and sources. It should be understood that the 2DCT embodying the present invention can There are many other features. For example, in some applications it is desirable to have "wake up, function, from 36 200813797 and the entire device "sleep" is in an inactive state or in the background state. In such a situation Underneath, it is often desirable to have as long as the human body ''.

Something within a certain distance will trigger the wake-up signal. The component can be driven as a single large capacitive electrode without regard to positioning, while the unit is in the background. During this state, the electronic driver logic looks for very small signal changes that are not large enough to be handled as a 2-dimensional nest, but are sufficient to determine that an object or person is in proximity. The electronic device then "wakes up" the entire system, and the components are driven, thus becoming true 2DCT again. BRIEF DESCRIPTION OF THE DRAWINGS In order to better understand the present invention and to explain how the present invention can be implemented, the drawings will be exemplarily described below. In the drawings: FIG. 1 is a diagram showing an electrode pattern of a prior art 2DCT. Schematic plan view. Fig. 2 is a schematic plan view showing portions of an electrode pattern of a 2DCT of the first embodiment of the present invention. Fig. 3 is a plan view of the 2DCT prototype according to the first embodiment, showing the electrode pattern and the first connection layer connected to the y electrode at the periphery of the electrode pattern region. Figure 4 is a plan view of the 2DCT prototype of Figure 3, showing the electrode pattern and a second connection layer connected to the X electrode at the periphery of the electrode pattern region, the second connection layer also connecting the external feed line of the y electrode to the The y electrode shown in Figure 3 is connected. Figure 5 is a schematic diagram of a system level 37 200813797 of the drive and data acquisition circuit of the first embodiment. Figure 6 is a schematic plan view showing an electrode diagram of a 2DCT of the second embodiment of the present invention. Fig. 7 is a schematic plan view similar to Fig. 6 showing portions of the electrode pattern and the y-link of the modification of the second embodiment. Figure 8 is a plan view of a prototype of a 2DCT according to a second embodiment, .....

The electrode pattern and the first connection layer connected to the y electrode at the periphery of the electrode pattern region are not formed. Figure 9 is a plan view of a 2DCT prototype according to a second embodiment showing a resistive layer connecting a resistive element between the y electrodes. Figure 10 is a plan view of the 2DCT prototype of Figure 8, showing the electrode pattern and a second connection layer connected to the X electrode at the periphery of the electrode pattern region, the second connection layer also connecting the y electrode external feed line to the 8th The y electrode shown in the figure is connected. Fig. 11 is a schematic plan view showing a partial electrode case of the third embodiment. Fig. 12 is a plan shoulder showing the electrode pattern of the 2DCT prototype according to the third embodiment. Fig. 13 is a schematic plan view showing portions of the electrode pattern of the fourth embodiment. Fig. 14 is a schematic plan view showing portions of the electrode pattern of the fifth embodiment. Fig. 15 is a schematic plan view showing portions of the electrode pattern of the sixth embodiment. 38 200813797 ; : *;. -. / ..... .. . ' - :; . . . . ;.. .. • -' ·.~ ; . . . ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -T . . - - . . . - - : - : : : : : - Figure 16 is a glass touch panel containing 2DCT embodying the present invention - - - - . . . : . Schematic plan.

[Main component symbol description] 1,2 Triangle group 24, Electrode 3, 4 Rectangular strip 2 6 Medium: Ridge 10 Electrode 2 61 Middle ridge 10n Electrode strip 2 6, Middle ridge 12 Electrode 3 0 Conductive line 12, ! Strip 32 Conductive line 14 Electrode 3 3 Pad area 14 丨 Electrode 3 4 Conductive line 14 丨丨 Electrode group 36 Conductive line 16 Electrode 38 Conductive line 16' Electrode 39 Pad area 16'* Electrode 40 Substrate 18 Electrode 42 Neck convex 18, electrode 44 trajectory 18 丨, electrode 4 6 揍 contact pad 20 electrode 50 Thread 20 " electrode 5 0! rail green 22 electrode 5 2 trajectory 22 " electrode 52, connection line 24 electrode 54 丨 connection line 39 200813797

56 connection line 11 6 glass panel 5 6, connection line 140 sensor circuit 5 8 'connection line 156 charge switch 60, connection line 157 charge control line 62 line 158 reference voltage line 74 resistive strip 162 discharge switch 75 resistivity Material 163 Discharge Control Line 80, 82, 84, 86 Electrode 168 Microprocessor 90 First Set of Electrodes 182 Multiplexer 92, 94, 96, 98 Electrode 184 Amplifier 100 Second Set of Electrodes 186 ADC 102, 104v 106, 108 Electrode 188 reset switch array 110 button pattern sheet 190 reset control line 112 printed circuit board XI ~ X5, Y1 ~ Y7 bus bar 114 cable

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Claims (1)

200813797 X. Patent Application Park: 〗 A two-dimensional positioning sensor: comprising a substrate having a sensing area defined by a pattern of electrodes including electrodes for determining the position of the 和 and for Determining the position of the y: the electrode, wherein the χ electrode and the 丫 electrode extend generally in the χ direction and are staggered in the y direction, and wherein the X electrode includes the first, second and third groups of elements, which are shaped An adjacent element of the first and second elements is coextensive on a portion of the sensing region in a continued X direction, and the phase element of the second and third group of elements is along the X direction on another portion of the sensing region Coextending such that the X electrode provides a corresponding ratio of capacitive signals across the sensing region in the X direction. 2. The inductor of claim 2, wherein the χ electrode further comprises a fourth set of elements, and adjacent elements of the third and fourth sets of elements are on a further portion of the sensing area Coextensively, the crucible electrode provides a corresponding ratio of capacitive information that spans the sensing region in the X direction. 3. The inductor of claim 2, further comprising: a plurality of external conductive lines connected to the electrode at the periphery of the sensing region, comprising: an element connected to each group of the X electrode group Corresponding conductive lines; a plurality of conductive lines connected to the y-electrode; the inductive sensor according to claim 1 of the patent application, 41 200813797 a plurality of external conductive lines connected to the peripheral electrode of the sensing region - a conductive line connected to the middle ridge to contact the third group of X electrodes, the middle ridge symbolically distinguishing the sensing into a left side and a right side; a conductive line connected to the left-handed element of the middle ridge of the first set of X electrodes, - . . . . . . . . . and the first set of X electrodes are located in the middle ridge a conductive line to which the component on the right side is connected; a conductive line connected to an element on the left side of the middle ridge of the second group of X electrodes; .- -.-; and one of the second set of X electrodes located on the right side of the middle ridge a conductive line to which the component is connected; and a plurality of conductive lines connected to the y electrode. 6. The inductor of any one of clauses 1 to 5, wherein the coextensive elements of the respective X electrode sets have complementary bevels at their coextensive distance to provide the ratio Capacitive signal. The sensor of any one of claims 1-5 to 5, wherein the elements in which the respective X electrode groups are coextensive in the X direction have adjacent blocks having a change in area at a distance they extend together. To provide the capacitive signal of the shore. 8. The inductor of any one of clauses 1 to 5 wherein the y-electrodes are individually and/or group-connected to respective outer conductive lines to provide a position in the y-direction News. 9. The inductor of any of clauses 5 to 5, wherein the y-electrode is interconnected by a resistive element to enable an external conductive line connected to a subset of the y-electrode 42 200813797 The output ratio is a capacitive signal to provide positional information in the y-direction. The inductor of any one of claims 1 to 5, wherein the y electrode is arranged to have at least two y electrodes Vertically adjacent groups, each of the y electrodes having different vertical widths, enabling a capacitive signal to be produced by an external conductive line output ratio connected to the different y-electrodes of each set, thereby providing the y-direction Location information. 11. Inductive as claimed in any one of claims 1 to 5 The electrode is made of a transparent material. The sensor of any one of clauses 1 to 5, wherein the substrate is made of a transparent material. 43