TWI399685B - Resistance-type touch panel - Google Patents

Description

Resistive touch panel

The present invention relates to a touch panel, and more particularly to a resistive touch panel.

Please refer to FIG. 1 , which is a cross-sectional side view showing the basic structure of a conventional resistive touch panel. The basic structure 1 includes an upper conductive layer 11 , a lower conductive layer 12 , and a plurality of spacers 13 . In the basic structure 1, the upper conductive layer 11 is made of PET (Poly Ethylene Terephthalate, polyethylene terephthalate), and a lower layer of indium tin oxide (ITO) layer is coated on the lower surface. 111. On the other hand, the lower conductive layer 12 is made of PET or glass, and the upper surface thereof is also coated with a layer of indium tin oxide 121. The upper conductive layer 11 and the lower conductive layer 12 are separated by a spacer 13 to avoid a malfunction caused by a short circuit when there is no touch.

Please continue to refer to FIG. 2, which is a schematic diagram of the working principle of the conventional five-wire resistive touch panel. For the five-wire resistive touch panel 2, it has an upper conductive layer 21 and a lower conductive layer 22, and the upper conductive layer 21 and the lower conductive layer 22 are also separated by a spacer 23 (not shown). A plurality of voltage dividing electrodes and a plurality of auxiliary electrodes are respectively disposed around the lower conductive layer 22, and the voltage dividing electrode and the auxiliary electrode on the opposite sides are parallel to each other, and the voltage dividing electrode and the auxiliary electrode on the adjacent sides are perpendicular to each other. . The voltage dividing electrode and the auxiliary electrode located in a pair of mutually parallel sides form two X circuits 221, 221', and the voltage dividing electrode and the auxiliary electrode located in the other parallel side of each other form two Y circuits 222, 222'.

As a result, a voltage drop of 5 V is formed between the two X circuits 221, 221', and another voltage drop of 5 V is formed between the two Y circuits 222, 222'. When the touch panel 2 is touched by the user, the voltage of the voltage at which the lower conductive layer 22 is touched can be detected by the upper conductive layer 21, and the detected voltage value is transmitted to the controller ( The coordinate value is obtained after not shown in the figure.

For the five-wire resistive touch panel, since the upper conductive layer 21 itself is a uniform conductive layer, any point on it can be used to transmit voltage.

However, for the conventional five-wire resistive touch panel described above, since the way of detecting the voltage is analogous, only a single touch value can be detected. For a multi-touch of two or more points, It is not a reaction that produces no read action, or a reaction that reads an intermediate value that does not reach the actual value. For the user, the practicality is insufficient.

For the sake of the job, the applicant has conceived the multi-touch resistive touch panel of this case through careful trial and research and a spirit of perseverance in view of the lack of knowledge in the prior art. Description.

Based on the foregoing prior art, it is necessary to conceive a resistive touch panel with multi-point detection function, so as to realize the multi-point detection effect that the digital touch panel can achieve by the analog touch panel.

According to the above concept, the applicant conceived a resistive touch panel, comprising: a lower substrate having a first conductive layer thereon, the first conductive layer having a plurality of voltage dividing electrodes and a plurality of auxiliary electrodes; a substrate having a second conductive layer facing the first conductive layer, the second conductive layer having a complex a plurality of conductive regions, each of the conductive regions being electrically insulated from each other, and at least one conductive region having an external signal line; and a plurality of spacers disposed between the first conductive layer and the second conductive layer; wherein the resistor When the touch panel is touched, the second conductive layer is electrically connected to the first conductive layer at the same time by at least two conductive regions, and the voltage dividing electrodes and the plurality of auxiliary electrodes are electrically conductive. Each of the conductive regions provides a voltage value, and the external signal lines are used to detect the voltage values, thereby determining which points or regions on the resistive touch panel are simultaneously touched.

Therefore, the resistive touch panel provided in the present invention can achieve the effect of accurately determining which points on the touch are simultaneously touched, and the digital touch panel can be realized only by the cost of manufacturing the analog touch panel. Multi-point detection effect achieved.

This case can be further understood by the following diagrams and detailed explanations:

Please refer to FIG. 3(A) and FIG. 3(B), which are respectively a cross-sectional side view of the basic structure of the resistive touch panel and a transparent top view of the upper and lower substrates. In the third (A) diagram, the basic structure 3 mainly includes an upper substrate 31, a lower substrate 32, and a plurality of spacers 33, and the lower substrate 32 has a first conductive layer 34 thereon.

Referring to FIG. 3(B), which is the same as the configuration of FIG. 2, two X circuits 321 and 321' composed of a plurality of voltage dividing electrodes and a plurality of auxiliary electrodes are disposed around the first conductive layer 34. With the two Y circuits 322, 322', the pair of X circuits and the pair of Y circuits can be used to form a voltage drop of 5V, respectively.

Referring to FIG. 3(A) again, a second conductive layer 311 is disposed on a side of the upper substrate 31 facing the first conductive layer 34, and a second conductive layer is formed by coating a conductive material thereon. 311 has a plurality of conductive regions (such as A1, A2); and is characterized in that each of the conductive regions is electrically insulated from each other by the above-mentioned method of partition coating.

The function of the plurality of spacers is the same as that of the prior art, and is disposed between the first conductive layer 34 and the second conductive layer 311 to prevent a malfunction caused by the short circuit of the resistive touch panel when it is not touched.

The second conductive layer 311 of the upper substrate 31 is divided into a plurality of conductive regions electrically insulated from each other as needed, and wherein at least one conductive region has an external signal line; therefore, when the resistive touch panel 3 is When at least two points are touched at the same time, the second conductive layer 311 is electrically connected to the first conductive layer 34 at the same time by at least two conductive regions, and the pair of X circuits 321, 321' and the The Y circuit 322, 322' provides a voltage value for each of the electrically conductive regions of the electrical conduction. Therefore, each of the voltage values is detected through the external signal lines, and the resistive touch panel 3 can be determined and detected. Which points or areas are touched at the same time to achieve the multi-point detection effect that the digital touch panel can achieve.

It should be noted that the foregoing “the presence of at least one conductive region in the plurality of conductive regions has an external signal line” includes “each of the plurality of conductive regions has an external signal line” or “in the plurality of conductive regions” Only a part of the conductive areas have an external signal line, and the like. In addition, the number of external signal lines connected to each conductive area is not limited, and can be freely changed according to the requirements of the visual design.

The constituent materials in the basic structure 3 of the resistive touch panel are As in the prior art, the materials of manufacture of the upper substrate 31 and the lower substrate 32 include, but are not limited to, PET, polycarbonate (PC), glass, or other transparent or opaque substrate-making materials. In addition, the materials for manufacturing the first conductive layer 34 and the second conductive layer 311 include, but are not limited to, indium tin oxide (ITO), fluorine tin oxide (FTO), antimony tin oxide (Antimony Tin). Oxide, ATO), carbon ink or similar conductive material.

The present invention does not limit the method of dividing the conductive region. As shown in the upper view of the second conductive layer in the fourth figure, the conductive region can be divided into two having different shapes (such as the conductive region shown in FIG. 4(A). A1 and A2), or dividing the conductive region into four having different shapes (such as the conductive regions A1, A2, A3, and A4 shown in FIG. 4(B)), of course, the conductive regions may be divided into the same Nxm of shapes (as shown in Figure 4(C)).

In addition to the above three examples, as long as the concept of the patent application scope of the present application is grasped, those skilled in the art can also divide the conductive region into eight having a radiation shape (such as the conductive region shown in FIG. 4(D). A1 to A8), or a plurality of conductive regions are divided into different geometric shapes, but each conductive region is in contact with the edge of the conductive layer (such as conductive regions A1 to A6 shown in FIG. 4(E)) .

Although the present invention is illustrated by the above five embodiments, in the technology of the present case, the shape and number of the conductive regions are not important, as long as the design requirements are met, for those skilled in the art, The greater the number of conductive regions, the higher the sensitivity of the analog touch panel formed.

In summary, the present invention provides a resistive touch panel, by electrically cutting the upper conductive layer, so that the analog analog touch panel can accurately determine which points or The effect of the area being touched at the same time, only the cost of manufacturing an analog touch panel can be used to achieve the number Multi-point detection effect achieved by the position touch panel.

This case has been modified by people who are familiar with the art, but it is not intended to be protected by the scope of the patent application.

1, 2, 3‧‧‧Resistive Touch Panel

11, 21‧‧‧ upper conductive layer

12, 22‧‧‧ under the conductive layer

13, 23, 33‧‧ ‧ spacers

111, 121‧‧‧ indium tin oxide layer

221, 221'‧‧‧X circuit

222, 222'‧‧‧Y circuit

31‧‧‧Upper substrate

32‧‧‧lower substrate

311‧‧‧Second conductive layer

34‧‧‧First conductive layer

321,321'‧‧‧X circuit

322, 322'‧‧‧Y circuit

A1, A2, A3, A4, A5, A6, A7, A8‧‧‧ conductive areas

Fig. 1: A cross-sectional side view showing the basic structure of a conventional resistive touch panel.

Figure 2: Schematic diagram of the working principle of the conventional five-wire resistive touch panel.

Fig. 3(A) is a cross-sectional side view showing the basic structure of the resistive touch panel proposed in the present invention.

Fig. 3(B) is a transparent top view of the upper and lower substrates of the resistive touch panel proposed in the present invention.

4(A) to 4(E): a top view of the five second conductive layers exemplified in the present case.

3‧‧‧Resistive touch panel

31‧‧‧Upper substrate

32‧‧‧lower substrate

311‧‧‧Second conductive layer

34‧‧‧First conductive layer

A1, A2‧‧‧ conductive area

Claims (9)

A resistive touch panel comprising: a lower substrate having a first conductive layer thereon, the first conductive layer having a set of X sensing circuits and a set of Y sensing circuits on the edge, the set of X sensing circuits and the Y The sensing circuit includes a pair of voltage dividing electrodes and an auxiliary electrode disposed opposite to each other; an upper substrate having a second conductive layer facing the first conductive layer, the second conductive layer having a plurality of conductive regions thereon, Each of the conductive regions is electrically insulated from each other, and at least one conductive region has an external signal line; and a plurality of spacers are disposed between the first conductive layer and the second conductive layer; wherein the resistive touch panel is The second conductive layer is electrically connected to the first conductive layer at the same time by at least two conductive regions, and the pair of divided electrodes and the auxiliary electrode provide a voltage for each of the electrically conductive regions that are electrically conductive. The values of the external signal lines are used to detect the voltage values, so as to determine which points or regions on the resistive touch panel are simultaneously touched. The resistive touch panel of claim 1, wherein the material of the lower substrate comprises, but is not limited to, polyethylene terephthalate (PET), polycarbonate (PC) or glass. The resistive touch panel of claim 1, wherein the material of the first conductive layer comprises, but is not limited to, indium tin oxide (ITO), fluorine tin oxide (FTO), antimony tin oxide (ATO). Or carbon ink conductive (Carbonate). The resistive touch panel of claim 1, wherein the material of the upper substrate comprises, but is not limited to, PET, PC or glass. The resistive touch panel of claim 1, wherein the material of the second conductive layer comprises, but is not limited to, ITO, FTO, ATO or carbon ink conductive. The resistive touch panel of claim 1, wherein the number of the conductive regions is at least two. The resistive touch panel of claim 6, wherein the conductive regions are identical in shape to each other. The resistive touch panel of claim 6, wherein the conductive regions are different in shape from each other. The resistive touch panel of claim 6, wherein the conductive regions have the same shape and different portions.