CN201174111Y

CN201174111Y - Signal conducting construction of touching control panel

Info

Publication number: CN201174111Y
Application number: CNU2008200071967U
Authority: CN
Inventors: 杨恺悌
Original assignee: Young Fast Optoelectronics Co Ltd
Current assignee: Young Fast Optoelectronics Co Ltd
Priority date: 2008-03-12
Filing date: 2008-03-12
Publication date: 2008-12-31
Anticipated expiration: 2018-03-12

Abstract

The utility model discloses a signal transmission structure for a touch control panel. A plurality of resistor units are arranged adjacent to an edge of a conducting film so that a suitable interval is formed between each two resistance units to form a signal conducting channel. Resistance units are arranged to be staggered with the signal conducting channel, and a silver guide channel is electrically connected to the resistance unit and the surface of the edge of the conducting film on the outer side of the signal conducting channel. By controlling the positions of the resistance units and the sizes of the signal conducting channels of one another, the resistance value of the signal conducting path on each different part of the conducting film is adjusted, the phenomenon of uneven attenuation of the signal during a transmission process is improved, and an output end point can obtain output signals from each part with conducting signal voltage values being approximately the same.

Description

The signal transmitting construction of contact panel

Technical field

The utility model relates to a kind of signal transmitting construction of contact panel of adjustable output signal, especially finger is a kind of can remove this signal of revisal in response to different signal conducting paths in the signal transport process, make this signal of input, all can obtain an output signal that meets specific standard from each position of contact panel.

Background technology

Contact panel has become a kind of important input media in recent years, it is widely used in being configured on the display panels such as LCD or cathode-ray tube (CRT), but allow indication on the user's transmission display screen picture with touch-control desired locations such as finger or nibs, carry out the function of signal input by this.Contact panel comprises the subtend configuration to separate certain interval of two planar conductive films usually, wherein have at least a conductive film to be set on the flexual transparent membrane, another conductive film then is set at the surface of a hard substrate, between two of subtend configuration, be provided with the usefulness of most planes adhesive tape as conducting and insulation, and reserve adhesion area coating viscose, by this together with the two sealing gluing.

Have on the aforementioned conductive film surface by the conductive materials deposition and lay the conductive layer that forms, for example be indium tin oxide target (indium tin oxide, ITO), and the signal on this conductive film is to see through the electric silver-colored guide passage (Silver-containing conductive electrode) that is connected on lateral edge to be sent to signal processing circuit, for example shown in Figure 3, the signal that the first position P1 is triggered on conductive film T, be sent on the silver-colored guide passage R by the first path D1 with the shortest conduction distance, the first signal input point K1 from this silver guide passage passes the signal to the line end M of this silver guide passage and exports again, in like manner, the signal that the second position P2 is triggered on this conductive film, to be sent to from the second path D2 of bee-line on this silver guide passage, and pass the signal to the line end M of this silver guide passage and export from secondary signal input point K2 again; By above stated specification as can be known, the signal that diverse location triggered on this conductive film, can be sent to follow-up signal processing circuit via different conducting paths, yet, because general silver-colored guide passage is that electricity connects the lateral margin that is configured in aforementioned conductive film with microscler plane chaff, and should itself have higher impedance (impedance) by the silver guide passage, and impedance will cause the decay of signal in the conductive process of signal, therefore, as the difference K1 of signal by this silver guide passage, K2 is input to from the process of line end M output, signal will bear the influence of different resistance values and have in various degree decay, particularly on this silver guide passage from output line terminal M position Kx farthest and nearest position Ky, the attenuation degree of the transmission signal between the two contrast is more obvious; This result when if the difference of signal attenuation is serious, will influence the accurate location of contact point on the contact panel, causes the adverse effect of follow-up signal processing circuit in running; Therefore, present most way is in this signal transport process, but removes to carry out the calibration procedure of a revisal signal intensity, so that obtain the signal that output one meets specific standard.

In many existing signal calibration methods, have plenty of and adopt the conductive pattern line (conductive patterns) that is provided with complexity to redistribute signal, or in guide passage, be connected in series the signal correction circuit extraly to control the signal that this is redistributed, to lower this signal uneven phenomenon that in transmission course, decays, wherein, for example United States Patent (USP) the 4th, 293, No. 734 and the 4th, 661, disclosed reinforcement electrode methods that are provided with of patent case such as No. 655: as Fig. 4, shown in Figure 5, be to utilize near the reinforcement electrode R that the edge of this conductive film T, is provided with through specially designed complicated figure line, and this reinforcement electrode has different shapes or length, and most reinforcement electrodes are located at close middle part, pad value when most reinforcement electrodes being set transmitting to reduce this position signal by increasing in the middle part reaches the purpose of the conducted signal magnitude of voltage difference of further electrode two ends and central part; Yet this prior art, because the design of this complicated figure line electrode and computing method are difficult for, and its manufacturing technology difficulty is higher, also be easy to when making production, take place error, so that produce inaccurate signal calibration result, again, at this conductive film edge these complicated conductive pattern lines are set, the active area that also will cause contact panel is by collapse Cheng Gengxiao.In addition, in other signal calibration method, also has plenty of the guide passage R (Bus-Bar) that confluxes that a nonparallel sweep (non-parallel curved lines) style is set with the edge at this conductive film T, for example shown in Figure 6, utilize thisly to have the guide passage that confluxes of arc equipotential field (bowed equipotential field) to reach the purpose of signal calibration; Though this prior art is provided with simply, but the guide passage signal output part becomes narrow confluxing, causing current signal is its major defect by a large amount of consumption, again, this curved edge that guide passage presented that confluxes, make the contact panel outward appearance seem very lofty and very not attractive in appearance, and the working area collapse of contact panel is become less.

The utility model content

Fundamental purpose of the present utility model provides a kind of signal transmitting construction of contact panel, can make in the signal that each different parts produced on the contact panel is being sent to the signal conducting path of output terminal of silver-colored guide passage (electrode) and all obtain a rough identical pad value, so that obtain the conducted signal magnitude of voltage near identical output signal.

According to the utility model, the signal transmitting construction of this contact panel is to be provided with a plurality of resistance units near the edge with its conductive film, and make and have an appropriate intervals between each resistance unit each other to form signal conduction channel, make described resistance unit and signal conduction channel be mutually each other alternately to arrange and be provided with, and be provided with a silver medal guide passage electricity and be connected to described resistance unit and signal and conduct on the conductive film edge surface in the outside of channel; By what control described resistance unit position and signal each other conduction channel size is set, resistance value with the signal conducting path of adjusting each different parts on this conductive film, improve the signal uneven phenomenon that in transmission course, decays, make exit point can obtain output signal from each position near identical conducted signal magnitude of voltage.

Above-mentioned resistance unit is hollow out conduit or the hole of running through this conductive film; Aforementioned hollow out conduit or hole are to utilize engraving method to make.

Best, described resistance unit is elongated, and its length is to be laid in the mode that non-linear gradual increases to two end limits by the middle part, or the width that makes described signal conduction channel is being laid in the mode that non-linear gradual reduces to two end limits by the middle part, or the mix and match that aforementioned two kinds of modes are laid uses.

The beneficial effects of the utility model are, the signal that triggers from each of contact panel position is transmitted and the process of output signal through aforementioned signal transmitting construction, cause at each different signal conducting path and all have identical or approximate resistance value, even also signal has the decay of same degree, therefore all can obtain an output signal that meets specific standard, reach the purpose of signal calibration.

And will go on to say with a specific embodiment after being next to, further to illustrate character of innovation of the present utility model.

Description of drawings

Fig. 1 is a partial plan layout of the present utility model, shows the laying mode of described hollow out conduit 12;

Fig. 2 is the partial plan layout of another embodiment of the present utility model, shows the laying of described signal conduction channel 13;

Fig. 3 is the planimetric map of an existing contact panel, the running synoptic diagram that the signal that is presented on the conductive film to be triggered is exported via different conducting paths;

Fig. 4 is the planimetric map of the conductive film of another existing contact panel, is provided with through specially designed figure line electrode near being presented at the edge of this conductive film;

Fig. 5 also is the planimetric map of the conductive film of another existing contact panel, shows near another kind of the setting edge of conductive film through specially designed figure line electrode; And

Fig. 6 is again the planimetric map of the conductive film of an existing contact panel, shows that a kind of edge at conductive film is provided with the guide passage that confluxes of a nonparallel sweep style.

[primary clustering symbol description]

Conductive film 1 substrate 4

Silver guide passage 6 signal output parts 61

Hollow out conduit 12 signals conduction channel 13

Embodiment

Shown in attached each figure in back, the conductive film 1 of this contact panel is to be configured on the surface of a substrate 4, and, make the signal of triggering on this conductive film can see through electricity and be connected on the silver-colored guide passage of side and be sent to follow-up signal processing circuit by the signal output part 61 of its two ora terminalis in the overlapping edges of this conductive film 1 silver guide passage 6; Wherein, be provided with the hollow out conduit (slot) 12 that several runs through this conductive film near the silver-colored guide passage 6 that connects in this conductive film 1 edge and near electricity, and make having an appropriate intervals width between each hollow out conduit 12 each other, make described conduit 12 be mutually each other to arrange alternately and be provided with signal conduction channel 13 to form signal conduction channel (channel) 13; The conductive layer of aforementioned this conductive film 1 is that material is deposited forms by indium tin oxide target (ITO), so described hollow out conduit 12 can be reached by engraving method, this etching and processing operation is that part coating (or printing) one deck that on this conductive film surface desire is kept earlier blocks the coating of erosion, again this conductive film is immersed in the etching solution, for example be hydrochloric acid or salpeter solution, get rid of the part of on this conductive film, not wanting by etching then, only keep required predetermined portions.

And for example, this conductive film 1 and this silver guide passage 6 be the different impedance operator of each tool all, and the resistance value that is suffered in the signal conductive process is rough to be that sectional area size with signal conduction channel is the functionality direct ratio, and is the functionality inverse ratio with conduction stroke length; Therefore the said structure setting of the utility model embodiment, can be during running by the length scale of the described hollow out conduit 12 of control or the width size of described signal conduction channel 13, be sent to the different resistance value size that suffered in signal output part 61 distances of these silver guide passage 6 two sides to adjust on this conductive film 1 at the signal that each different parts was triggered, so that triggered the signal that transmits and come by this conductive film 1 each position, when transmitting this signal output part 61 of arrival, all can possess rough identical conducted signal magnitude of voltage, in order to the calculation process of follow-up signal processing circuit.

More particularly, as shown in Figure 1, when contact panel signal transmitting construction provided by the utility model is when utilizing the mode of controlling described hollow out conduit 12 length to arrange, the length of described hollow out conduit 12 is provided with and will be laid in the mode that non-linear gradual increases to two end limits by the middle part, and the signal conduction channel 13 that therefore has short hollow out conduit 12 and comparatively dense in the middle part is provided with; For another shown in Figure 2, this signal transmitting construction is when utilizing the mode of adjusting described signal conduction channel 13 width to arrange, then be that the width of described signal conduction channel 13 is laid in the mode that non-linear gradual reduces width to two end limits by the middle part, the signal conduction channel 13, two sides that therefore have broad in the middle part have narrower signal conduction channel 13 and are provided with; Be provided with in view of the above, can make the less resistance value that in the distance that is sent to this position, silver guide passage 6 stage casing, is suffered in the trigger pip of this conductive film 1 in the middle part, and the big resistance value that in the distance that is sent to this position, end, silver guide passage 6 limit, is suffered in the trigger pip of this conductive film 1 at the avris position; Though should be higher than the signal that is received at the avris position in the signal intensity that the position, stage casing is received by silver guide passage 6 again, only described signal is when this silver guide passage 6 is sent to the signal output part 61 of two sides, also will suffer the resistance value of different sizes because of the conduction stroke of going through different length, produce signal intensity attenuation in various degree, that is, signal output part 61 from the signal of this position, stage casing input to two sides is because have long conduction stroke, therefore will bear bigger impedance, produce more strength retrogression, no matter this result can make trigger pip at this conductive film 1 each position when being sent to the signal output part 61 of these silver guide passage 6 two sides, all can obtain near identical signal intensity.

In sum as can be known, the utility model is etched into some hollow out conduit 12 and signal conduction channels 13 of arranging setting alternately that are mutually each other by the edge at conductive film, so that the different electricity of this silver guide passage is connect the signal that the position provides a corrected strength, come revisal should the silver guide passage at the different resistance values of each input position, in other words, be that the signal that triggers from each of contact panel position is transmitted and the process of output signal through aforementioned signal transmitting construction, cause at each different signal conducting path and all have identical or approximate resistance value, even also signal has the decay of same degree, therefore all can obtain an output signal that meets specific standard, reach the purpose of signal calibration.

Claims

1, a kind of signal transmitting construction of contact panel, it comprises a transparence conductive film that is configured in substrate surface, and in the overlapping edges one silver medal guide passage of this conductive film, making the signal of triggering on this conductive film can see through electricity is connected on the silver-colored guide passage of side and is sent to follow-up signal processing circuit by its two ora terminalis, it is characterized in that: near the edge of conductive film, be provided with a plurality of resistance units, has an appropriate intervals between each resistance unit each other to form signal conduction channel, make described resistance unit and signal conduction channel be mutually each other alternately to arrange and be provided with, and make this silver guide passage electricity be connected to described resistance unit and signal to conduct on the conductive film edge surface in the outside of channel.

2, the signal transmitting construction of contact panel as claimed in claim 1 is characterized in that, this resistance unit is hollow out conduit or the hole of running through this conductive film.

3, the signal transmitting construction of contact panel as claimed in claim 1 is characterized in that, described resistance unit is elongated, and its length is to be laid in the mode that non-linear gradual increases to two end limits by the middle part.

4, the signal transmitting construction of contact panel as claimed in claim 1 is characterized in that, the width of described signal conduction channel is to be laid in the mode that non-linear gradual reduces to two end limits by the middle part.