TW200523803A - Linear electrodes of touch panel - Google Patents

Abstract

The linear electrode of a touch panel is an oblong formed by two vertical segments and two transverse segments. The connection ends are respectively formed at four corners of the oblong to connect the control circuit. There is a relatively protruded flat section at the middle part of each vertical and transverse segment. Many protruded terminals protrude and extend on each vertical and transverse segment. The protruded length of each protruded terminal decreases progressively from the flat section to the connection ends, to form an arc distribution. A cross rod is between two adjacent protruded terminals. The control circuit drives voltage on each flat section, protruded terminal and rod to get uniform potential difference distribution. Continuous and linear change potential difference is formed to precisely judge the touch point of the touch panel.

Description

200523803 V. Description of the invention α) [Technical field to which the invention belongs] The present invention relates to a linear electrode of a touch panel, in particular to a continuous and linearly changing potential difference that can be formed in the touch area, so that the output of the touch area The electrical signal can provide a touch panel linear electrode that the computer can accurately sense. [Prior art]

As shown in FIG. 4, it is a schematic diagram of a conventional five-wire touch panel, which is a control circuit 9 connected to the linear electrodes 8 1 of the touch panel 8 by four wires and applying a voltage to form a continuous and linear change. The potential difference is connected to the stylus pen 7 by a single line. When the stylus pen 7 clicks on any position of the touch panel 8, the control circuit 9 can detect the voltage values in the X and Y axis directions of the stylus pen 7 on the selected position. To determine the X and Y axis positions that define the 7-point touch point of the stylus. Please refer to FIG. 5, which is a schematic diagram of a linear electrode 8 1 used in a five-wire touch panel. In order for the stylus pen 7 to detect any potential difference at the selected position when the touch panel 8 is selected, The control panel 8 must have a continuous and linearly changing potential difference. Therefore, the linear electrode 8 1 is provided with a plurality of protruding electrodes 8 1 1, 8 1 2 in the X and Υ axis directions, respectively.

The distance between each electrode 8 1 1, 8 1 2 and each corner terminal 8 10A, 8 10B, 810C, 810D is not equal, so they are 810A, 8 from each terminal 8 10B, 810C, 8 10D The electrodes 8 1 1 and 8 1 2 that are farther away need to increase their area in order to make up for the pressure drop caused by the distance, in order to obtain a continuous and Linearly changing potential difference to avoid poor linearity caused by uneven potential difference distribution and causing stylus

Page 5 200523803 V. Description of the invention (2) 7 The shortcomings of the inaccurate judgment of the selected position. However, by increasing the electrode area to compensate for the voltage drop caused by the distance difference, the uniform effect of the potential difference distribution obtained is not good because it is far away from the terminals 8 10A, 8 10B, 8 The electrodes 8 1 1 and 8 1 2 of 10C and 8 10D have indeed caused a voltage drop problem, and the required conduction distance has not been reduced. Therefore, when the position selected by the stylus 7 falls on the touch panel, In the central area of 8, it is difficult to correctly read the selected position due to the inaccuracy of the voltage due to the inability to know the equivalent voltage.

Therefore, the 'design of the aforementioned linear electrode' must add a control IC in the control circuit to correct the deviation. However, adding a control IC will increase the manufacturing cost, and there is still room for improvement in the accuracy of the reading and selecting position after calibration. How to manufacture a linear electrode that can more accurately read the selected position at a lower manufacturing cost has become the main subject of the present invention. SUMMARY OF THE INVENTION The main object of the present invention is to solve the above-mentioned problems and provide a linear electrode of a touch panel capable of forming a continuous and linearly changing potential difference after applying a voltage to accurately determine a click position.

To achieve the foregoing object, the linear electrode of the present invention is formed by two straight sections and two horizontal sections forming a rectangular shape, and a terminal is formed at each of four corners to connect with the control circuit, and the center of each straight section and the horizontal section is A part of the platform protrudes from each part, and each of the straight and transverse sections protrudes from a plurality of protruding ends. The protruding length of each protruding end decreases from each platform segment to the ends of the two ends to form an arc. Distributed, and there is a cross-shaped protruding rod between each two adjacent protruding ends, so that the control circuit will

Page 6 200523803 V. Of course, the description of the invention and the embodiments of the present invention are different. The description, and [the actual structure of the embodiment of the structure of the embodiment please refer to the first substrate 1 1 first substrate (3) rod Shi Yiming said in detail above, the present invention is selected in the attached drawing.] The first structure is restricted. In the embodiment above, the voltages of layers 1 to 3 are sequentially formed to form a continuous and linearly changing potential difference. With reference to other objects and advantages, it is not difficult to obtain in-depth understanding from the following selected instructions and drawings. The embodiments that are allowed to be useful in some other parts or arrangements of other parts are shown in detail in this specification. Figure 3 to Figure 3. The ones shown in the figure are selected for the purpose of the present invention. This is for illustrative purposes only. In the patent application, the touch panel is not affected. As shown in Figure 1, it is a conductive lower dot spacer layer. 1 2, a linear electrode 2, a line layer 1 4, a second insulating layer 15 and the arrangement Λ, as shown in Figures 2 and 3, have two straight sections 21, 22 21, 22 and two horizontal sections 2 to form a wiring Terminal 2 0 1, 4 and control circuit horizontal section 2 3, 2 Conductor layer 1, 2 2 and platform section 2 1 2 2 and horizontal, 2 2 2 2 3, 2 2 2 1 section 3, 2 4, 2 2, As shown by the protruding ends of 24, the linear electrode 2 is generally rectangular and intersects with the two horizontal sections 2 3, 2 4 and the four corners that intersect with the two straight sections 3 and 24 are 202, 202, and 4, respectively. 204, 俾 are connected via (not shown), and the central portions of each straight section 2 1 4 are relatively protruded with a flat 231, 241, and each straight section 21, respectively, are protruded with a plurality of protruding ends 2 1 24 2 and each straight section 2 1, 2 2 and horizontal section 212, 22 2, 232, 242 mm

I __

Page 7 200523803 V. Explanation of the invention (4) The protruding length is from the platform sections 2 1 1, 2 2 1, 2 3 1, 2 4 1 to the terminals 2 0 1, 2 02, 2 at both ends. Decreasing at 3, 204, and two adjacent protruding ends 2 1 2, 2 2 2, 2 3 2, 2 4 2 have a cross-shaped protruding rod 2 1 3, 2 2 3, 2 3 3, 243, and each protruding end 212, 222, 232, 242 and each protruding rod 2 1 3, 2 2 3, 2 3 3, 2 4 3 are respectively from each straight section 21, 22 and each horizontal section 23, 24 protrudes vertically, and the cross-shaped protrusions 2 1 3, 2 2 3, 2 3 3, 2 4 3 are parallel to the straight sections

2 1, 2 2 and the horizontal sections 2 3, 2 4 respectively form a compensation section A,: B, so that each stage section 2 1 1, 2 2 1, 2 3 1, 241, each of the platform sections is controlled by the control circuit. The protruding ends 212, 222, 232, and 242 and each of the protruding rods 2 1 3, 2 2 3, 2 3 3, and 2 4 3 apply a voltage to form a uniform potential difference distribution. The linear electrode 2 of the present invention is located at each straight section 2 1, 2 2 and each horizontal section 2 3, 2 4 away from the terminals 2 01, 2 02, 20 3, and 20 4, that is, each straight section. The central portions of the sections 2 1 and 22 and the horizontal sections 23 and 24 are respectively designed with a platform section 2 1 1, 2 2 1, 2 3 1, 2 4 1, so that the two straight sections 2 1, 2 2 and the two horizontal sections 2 3, 2 4 corresponding to each platform segment 2 1 1, 2 2 1, 2 3 1, 2 4 1 shorten the conduction distance, plus each platform segment 21 1, 221, 231, 241 has a larger horizontal Wide, such a design has both the function of increasing the electrode area and shortening the conduction distance, so that each platform section 2 1 1, 2 2 1, 2 3 1, 2 4 1 can make up for the distance from the terminal 2 0 1, 2 The voltage drop loss caused by 0 2, 2 3, 2 0 4 can make the potential of the central part of the touch panel

Page 1 of 1 minus, 2, 3, 2 degrees, 24, 24, 2, 21 at each end, 42 points away from 3322, strong 2 and 4, because of the 222 plus the cloth, 1 ο fill, 2, and can be divided into points. 232, 2 and 2 each have a difference of 32, but 231 and B are adjacent to 2, 3 and 212, and phase electricity, 1 ο same, 2 ends, A and 222 count 2 parity gaps 3 2 2, set 1 Sudden air compensation 4 of 2, 2, 21 2 of the cloth supplement 22, Ιο This end is adjacent to, 4 2 12, the word difference is 3 3 2 1 2, the state of the twelve digits 4 3, 2 sections 1 shape two one For the 22CM end stage of the power supply, there are Mitsube, 3 out of flat 2 cloth. The adjacent ends of the 332 are different from each other, 2 3 2, each of which is divided by a linear loss of 3 4 2 2 CM, which is connected to the upper arc 403, which is one of the two degrees plus CXJ, 33C. \ 3 Then the long end becomes another 2, 2CM1, and the two-shaped students 433222 suddenly produce 232 and rod 1. 200523803 V. Description of the invention (5) The uniformity of the difference distribution is improved to form a continuous and linearly changing potential difference, so as to accurately determine the click position of the touch panel. According to this, the design of the linear electrode of the present invention can indeed be controlled by the control circuit for each platform section 2 1 1, 2 2 1, 2 3 1, 2 4 1, each protrusion, the outlet 2 12, 222, 232, 242 and each protrusion. The rods 213, 223, 2 3 3, 2 4 3 apply a voltage to form a uniform potential difference distribution, so that the output electrical signals can provide precise sensing by the control circuit (or computer) for users to write, draw or point on the touch panel. When selecting a function, you can accurately determine the clicked position. The disclosure of the embodiments described above is used to illustrate the present invention, and is not intended to limit the present invention. Therefore, any change in numerical values or replacement of equivalent components should still be subject to

Page 9 i 200523803

Page ί 20052005803 Brief description of the drawings. Figure 1 is a schematic diagram of a touch panel structure using the linear electrode of the present invention. Figure 2 is a schematic plan view of the linear electrode structure of the present invention. Figure 3 is a partial enlarged view of the linear electrode of the present invention. Figure 4 is a schematic diagram of a conventional five-wire touch panel. Figure 5 is a schematic diagram of a linear electrode of a conventional five-wire touch panel. [Illustration of drawing number] (conventional part) Touch panel 6 Linear electrode 6 1

Terminal 61 ° A, 61 ° B, 61 ° C, 61 ° D electrode 611, 612 Stylus 7 Touch panel 8 Linear electrode 8 1 Terminal 810A, 81 ° B, 81 ° C, 810D electrode 8 1 1 , 8 1 2 control circuit 9 (part of the present invention) lower substrate 1 1 dot spacer layer 1 2 first insulating layer 1 3 wire layer 1 4 second insulating layer 1 5 upper substrate 1 6 linear electrode 2 terminal 2 0 1, 2〇2, 203, 204

Straight section 2 1, 2 2 Platform section 2 1 1, 2 2 1, 2 3 1, 2 4 1

Protruding end 212, 2 2 2, 232, 242 Protruding rod 213, 223, 233, 243 Cross section 2 3, 2 4 Compensation section A, B

Page 11

Claims (1)

200523803 々 、 Scope of patent application 1 · A linear electrode of a touch panel. The linear electrode is a rectangle with two straight sections and two horizontal sections, and is formed at four corners where the two straight sections and two horizontal sections intersect. A terminal is connected to the control circuit, and a center section of each straight section and a horizontal section respectively protrudes from a platform section, and each straight section and a horizontal section respectively protrudes from a plurality of protruding ends, and each of the straight sections and horizontal sections protrudes relatively. The protruding length of each protruding end of the segment decreases from each platform segment to the terminals at both ends, and there is a cross-shaped protruding rod between each adjacent two protruding ends, so that each platform segment is controlled by the control circuit. The voltage is applied to each protruding end and each of the protruding rods to form a uniform potential difference distribution. 2 According to the linear electrode of the touch panel described in the first item of the patent application scope, wherein each protruding end and each protruding rod are respectively The segments protrude perpendicularly to each horizontal segment, and the portions of the cross-shaped protrusions parallel to the straight and horizontal segments form a compensation portion, respectively. Page 12