Touch screen with integrated FPC resistance and capacitance functions

Abstract

The present invention relates to a touch screen with integrated FPC resistance and capacitance functions. The capacitance and resistance on the FPC are integrated on the sensor of the touch screen. When the capacitance sensing layer and capacitance driving layer of the sensor are exposed, developed, and etched, the FPC resistance and capacitance are also exposed, developed, and etched together. The FPC resistance can be in any one of the capacitance sensing layer and the capacitance driving layer, and the FPC capacitance needs to be in both the capacitance sensing layer and the capacitance driving layer to form a capacitor. The touch screen with integrated FPC resistance and capacitance functions of the present invention has the following advantages over conventional touch screens: (1) FPC components are optimized, the FPC device space is reduced, and the overall FPC structure is optimized; (2) the FPC resistance and capacitance are integrated on the sensor, reducing the FPC production cost.

Description

Technical Field

[0001] The present invention belongs to the technical field of touch screens, and in particular relates to a touch screen integrating FPC resistance and capacitance functions. Background Art

[0002] Conventional touch screens use ACF to bond the sensor and FPC together to form FOG to achieve functional conduction. Figure 1 As shown. There are capacitors, resistors, TVS tubes, LDOs, inductors and other components on the FPC flexible circuit board. Figure 2 As shown, capacitors and resistors are components fabricated through exposure, development, and etching. Components like TVS diodes, LDOs, and inductors can only be mounted on the FPC via SMT. The sesnor consists of a capacitive sensing layer and a capacitive driving layer. These layers are made by exposing, developing, and etching a transparent conductive material on a substrate to create an in-plane pattern and edge traces. The edge traces are connected to the in-plane pattern and integrated into the bonding area. The sensor's PIN terminal is bonded to the FPC's PIN terminal via ACF pressure bonding, forming a FOG (Field of Gauge) pattern, enabling functional conduction.

[0003] The FPC of a conventional touch screen contains a large number of components. As the functions of touch screens become more and more abundant and complete, the FPC design becomes more and more sophisticated, resulting in an increasingly larger FPC shape, increasing space occupancy and cost. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to design a touch screen with integrated FPC resistance and capacitance functions. Its purpose is to reduce the FPC device space, integrate the FPC resistance and capacitance on the touch screen sensor, optimize the overall structure of the electronic product, and solve existing technical problems.

[0005] To solve the above technical problems, the touch screen with integrated FPC resistance and capacitance functions of the present invention includes a substrate layer, a cover plate, and a liquid crystal display module; the front surface coating of the substrate layer is provided with a first conductive layer, and the back surface coating of the substrate layer is provided with a second conductive layer; the cover plate is connected to the first conductive layer via a first adhesive layer, and the liquid crystal display module is connected to the second conductive layer via a second adhesive layer;

[0006] The first conductive layer includes a sensor capacitor sensing layer, an FPC resistor, and an FPC capacitor 1. The FPC resistor, FPC capacitor 1, and the sensor capacitor sensing layer are subjected to a yellow light process or an imprint process of exposure, development, and etching to obtain edge traces and in-plane patterns. The second conductive layer includes a sensor capacitor driving layer and an FPC capacitor 1. The FPC capacitor 1 and the sensor capacitor driving layer are subjected to a yellow light process or an imprint process of exposure, development, and etching to obtain edge traces and in-plane patterns.

[0007] Alternatively, the first conductive layer includes a sensor capacitor sensing layer and an FPC capacitor 1, and the FPC capacitor 1 and the sensor capacitor sensing layer are subjected to a yellow light process or an imprinting process of exposure, development, and etching to obtain edge routing and an in-plane pattern; the second conductive layer includes a sensor capacitor driving layer, an FPC resistor and an FPC capacitor 1, and the FPC resistor, the FPC capacitor 1 and the sensor capacitor driving layer are subjected to a yellow light process or an imprinting process of exposure, development, and etching to obtain edge routing and an in-plane pattern.

[0008] Furthermore, FPC capacitor 1 is located in the invalid area of ​​the sensor capacitor sensing layer, FPC capacitor 2 is located in the invalid area of ​​the sensor capacitor driving layer, and the FPC resistor is located in the invalid area of ​​the sensor capacitor sensing layer or one of the sensor capacitor driving layers. The FPC flexible circuit board only contains TVS tubes, LDOs, inductors and other devices, and does not contain FPC capacitors and FPC resistors. FPC capacitor 1, FPC capacitor 2, and FPC resistors are introduced into the bonding area of ​​the touch screen sensor through edge routing, and are pressed together with the FPC body through ACF to achieve functional conduction.

[0009] Furthermore, the thickness of the cover plate is 0.4 mm to 1.8 mm. The cover plate can be a glass cover plate or a plastic cover plate.

[0010] Furthermore, the thickness of the first conductive layer and the second conductive layer is 20 nm to 2 μm.

[0011] Furthermore, the conductive materials of the first conductive layer and the second conductive layer are Cu or Ag, or ITO, and the line width and line spacing of the edge lines are both 10 μm to 40 μm.

[0012] Furthermore, the liquid crystal display module is a TFT liquid crystal display module or an IPS liquid crystal display module, or a flexible OLED display.

[0013] Furthermore, the substrate layer includes an upper-line substrate layer and a lower-line substrate layer, the upper-line substrate layer is coated with a first conductive layer on the front side, the lower-line substrate layer is coated with a second conductive layer on the front side, and the upper-line substrate layer and the lower-line substrate layer are connected by an adhesive layer.

[0014] Furthermore, the first, second and third adhesive layers are solid optically transparent adhesives with high transmittance and strong viscosity, and a thickness of 0.025 mm to 2 cm, where 0.025 mm to 0.3 mm is a conventional thickness and 0.3 mm to 2 cm is an unconventional thickness.

[0015] Furthermore, the etching method of FPC resistors is as follows: according to the required number and resistance value of resistors, when etching the touch screen sensor, the corresponding number and size of ITO blocks are simultaneously etched in the invalid area of ​​the sensor capacitor sensing layer or the sensor capacitor driving layer, and then the edge traces are used to pull them to the sensor bonding area, and together with the FPC, the functional conduction can be achieved. The resistance value is only related to the length and thickness of the material.

[0016] Furthermore, the etching method of the FPC capacitor is as follows: according to the required capacitance value, when etching the touch screen sensor, an ITO block of the corresponding area is simultaneously etched in the invalid area of ​​the sensor capacitor sensing layer and the sensor capacitor driving layer, and then the edge wiring is used to pull it to the sensor bonding area, and together with the FPC, the functional conduction can be achieved. The capacitance value is obtained by changing the ITO area of ​​the sensor capacitor sensing layer and the sensor capacitor driving layer.

[0017] The touch screen with integrated FPC resistance and capacitance functions of the present invention has the following advantages over conventional touch screens:

[0018] (1) Optimize FPC components, reduce FPC device space, and optimize the overall FPC structure;

[0019] (2) Integrate FPC resistors and capacitors on the sensor to reduce FPC production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specific embodiments of the present invention will be further explained below with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of a conventional touch screen structure;

[0022] Figure 2 This is a schematic diagram of the conventional touch screen sensor and FPC structure;

[0023] Figure 3This is a schematic diagram of the touch screen structure in Example 1;

[0024] Figure 4 This is a schematic diagram of the touch screen structure in Example 2;

[0025] Figure 5 This is a schematic diagram of the touch screen structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the touch screen sensor and FPC structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the FPC resistor and capacitor leads to the bonding area of ​​the present invention. DETAILED DESCRIPTION

[0028] Combine Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 The touch screen with integrated FPC resistance and capacitance functions of the present invention includes a substrate layer 1, a cover plate 6, and a liquid crystal display module 7; the front surface coating of the substrate layer 1 is provided with a first conductive layer, and the back surface coating of the substrate layer 1 is provided with a second conductive layer; the cover plate 6 is connected to the first conductive layer via an adhesive layer 1 81, and the liquid crystal display module 7 is connected to the second conductive layer via an adhesive layer 2 82;

[0029] The first conductive layer includes a sensor capacitor sensing layer 2, an FPC resistor 4, and an FPC capacitor 1 51. The FPC resistor 4, the FPC capacitor 1 51, and the sensor capacitor sensing layer 2 are subjected to a yellow light process or an imprint process of exposure, development, and etching to obtain edge traces and in-plane patterns. The second conductive layer includes a sensor capacitor driving layer 3 and an FPC capacitor 1 52. The FPC capacitor 1 52 and the sensor capacitor driving layer 3 are subjected to a yellow light process or an imprint process of exposure, development, and etching to obtain edge traces and in-plane patterns.

[0030] Alternatively, the first conductive layer includes a sensor capacitor sensing layer 2 and an FPC capacitor 51, and the FPC capacitor 51 and the sensor capacitor sensing layer 2 are subjected to a yellow light process or a stamping process of exposure, development, and etching to obtain edge routing and an in-plane pattern. The second conductive layer includes a sensor capacitor driving layer 3, an FPC resistor 4, and an FPC capacitor 52, and the FPC resistor 4, the FPC capacitor 52 and the sensor capacitor driving layer 3 are subjected to a yellow light process or a stamping process of exposure, development, and etching to obtain edge routing and an in-plane pattern.

[0031] In this embodiment, preferably, FPC capacitor 1 51 is located in the invalid area of ​​sensor capacitor sensing layer 2, FPC capacitor 2 52 is located in the invalid area of ​​sensor capacitor driving layer 3, and FPC resistor 4 is located in the invalid area of ​​one of sensor capacitor sensing layer 2 or sensor capacitor driving layer 3. The FPC flexible circuit board only includes devices such as TVS tube, LDO, inductor, etc., and does not include FPC capacitors and FPC resistors. FPC capacitor 1 51, FPC capacitor 2 52, and FPC resistor 4 are introduced into the bonding area of ​​the touch screen sensor through edge routing, and are pressed together with the FPC body through ACF to achieve functional conduction.

[0032] In this embodiment, the thickness of the cover plate 6 is preferably 0.4 mm to 1.8 mm. The cover plate 6 can be a glass cover plate or a plastic cover plate.

[0033] In this embodiment, preferably, the thickness of the first conductive layer and the second conductive layer is 20 nm to 2 μm.

[0034] In this embodiment, preferably, the conductive material of the first conductive layer and the second conductive layer is Cu or Ag, or ITO, and the line width and line spacing of the edge routing are 10 μm / 10 μm to 40 μm / 40 μm.

[0035] In this embodiment, the liquid crystal display module 7 is preferably a TFT liquid crystal display module or an IPS liquid crystal display module, or a flexible OLED display.

[0036] In this embodiment, preferably, the substrate layer 1 includes an upper-line substrate layer 11 and a lower-line substrate layer 12, the front surface coating of the upper-line substrate layer 11 is provided with a first conductive layer, the front surface coating of the lower-line substrate layer 12 is provided with a second conductive layer, and the upper-line substrate layer 11 and the lower-line substrate layer 12 are connected by an adhesive layer 83.

[0037] In this embodiment, preferably, the first adhesive layer 81, the second adhesive layer 82 and the third adhesive layer 83 are solid optically transparent adhesives with high transmittance and great viscosity, and a thickness of 0.025 mm to 2 cm, 0.025 mm to 0.3 mm being a conventional thickness and 0.3 mm to 2 cm being an unconventional thickness.

[0038] In this preferred embodiment, the etching method for the FPC resistor 4 is as follows: Based on the required number and resistance value of resistors, when etching the touchscreen sensor, a corresponding number and size of ITO blocks are simultaneously etched in the inactive area of ​​the sensor capacitor sensing layer 2 or the sensor capacitor driving layer 3. These blocks are then pulled to the sensor bonding area using edge traces and pressed together with the FPC to achieve functional conduction. The resistance value depends only on the length and thickness of the material. According to the calculation formula for resistance R = ρL / WH = square resistance * L / W, for the same material and thickness, the resistivity ρ and thickness H remain unchanged, and the resistance depends only on the length and thickness of the material. Assuming that the circuit requires four 2.2K resistors and the sensor square resistance is 100Ω / □, only four 0.1*2.2mm ITO blocks are needed to achieve 2.2K. The silver wire impedance is very low, basically in the single digits, and the FPC copper wire impedance is also basically in the single digits and can be ignored. Therefore, when etching the touch screen sensor, you only need to etch four 0.1mm*2.2mm ITO blocks in the invalid area of ​​the sensor's capacitive sensing layer or capacitive driving layer, and then use the edge wiring to pull them to the sensing area and press them together with the FPC to achieve functional conduction.

[0039] In this embodiment, the preferred etching method for the FPC capacitor is as follows: Based on the required capacitance value, when etching the touch screen sensor, an ITO block of the corresponding area is simultaneously etched in the inactive area of ​​the sensor capacitor sensing layer 2 and the sensor capacitor drive layer 3. Then, the edge trace is used to pull it to the sensor bonding area and press it together with the FPC to achieve functional conduction. The capacitance value is obtained by changing the ITO area of ​​the sensor capacitor sensing layer 2 and the sensor capacitor drive layer 3. According to the calculation formula C = ε * S / 4kπd, under the same material and the same thickness, the dielectric constant ε and the distance d remain unchanged, k and π are constants, and the capacitance value can be changed by simply changing the ITO area of ​​the capacitor sensing layer and the capacitor drive layer. Assuming that the circuit requires a 2.2nF capacitor, a 5mm * 4.4mm ITO block can be made on the sensor of the capacitor sensing layer and the capacitor drive layer. Therefore, when etching the touch screen sensor, you only need to simultaneously etch a 5mm*4.4mm ITO block in the inactive area of ​​the sensor's capacitive sensing layer and capacitive driving layer, then use the edge traces to pull it to the sensor bonding area and press it together with the FPC to achieve functional conduction.

[0040] Example 1

[0041] Combine Figure 3 、 Figure 5 、 Figure 6 and Figure 7The touch screen with integrated FPC resistance and capacitance functions of this embodiment includes a substrate layer 1, a cover plate 6, and a liquid crystal display module 7. The front surface of the substrate layer 1 is coated with a first conductive layer, and the back surface of the substrate layer 1 is coated with a second conductive layer. The cover plate 6 is connected to the first conductive layer via an adhesive layer 1 81, and the liquid crystal display module 7 is connected to the second conductive layer via an adhesive layer 2 82. The first conductive layer includes a sensor capacitance sensing layer 2, an FPC resistor 4, and an FPC capacitor 1 51. The FPC resistor 4, FPC capacitor 1 51, and sensor capacitor sensing layer 2 undergo a process of exposure, development, and etching, either through a photolithography or embossing process, to produce edge traces and an in-plane pattern. The second conductive layer includes the sensor capacitor driving layer 3 and FPC capacitor 1 52. The FPC capacitor 1 52 and sensor capacitor driving layer 3 undergo a process of exposure, development, and etching, either through a photolithography or embossing process, to produce edge traces and an in-plane pattern. FPC capacitor 1 51, FPC capacitor 2 52, and FPC resistor 4 are located in the inactive area of ​​the sensor capacitor sensing layer 2 and sensor capacitor driving layer 3. These FPC capacitors 1 51, 52, and FPC resistor 4 are introduced into the bonding area of ​​the touchscreen sensor via the edge traces and pressed together with the FPC body via the ACF to achieve functional conduction. The cover plate 6 has a thickness of 0.4 mm to 1.8 mm. It can be either glass or plastic. The thickness of the first and second conductive layers ranges from 20 nm to 2 μm. The conductive material of the first and second conductive layers is Cu or Ag, or ITO, and the line width and line spacing of the edge traces are 10μm / 10μm to 40μm / 40μm. The liquid crystal display module 7 is a TFT liquid crystal display module, an IPS liquid crystal display module, or a flexible OLED display. Adhesive layer 1 81 and adhesive layer 2 82 are solid optically transparent adhesives with a thickness of 0.025 mm to 2 cm. The etching method for the FPC resistor 4 is as follows: based on the required number and resistance value of resistors, when etching the touch screen sensor, a corresponding number and size of ITO blocks are simultaneously etched in the inactive area of ​​the sensor capacitor sensing layer 2 or the sensor capacitor driving layer 3. The ITO blocks are then pulled to the sensor bonding area using the edge traces and pressed together with the FPC to achieve functional conduction. The resistance value is only related to the length and thickness of the material. The etching method of FPC capacitors is as follows: According to the required capacitance value, when etching the touch screen sensor, synchronously etch out an ITO block of corresponding area in the invalid area of ​​sensor capacitor sensing layer 2 and sensor capacitor driving layer 3, and then use the edge routing to pull it to the sensor bonding area, and press it together with the FPC to achieve functional conduction. The capacitance value is obtained by changing the ITO area of ​​sensor capacitor sensing layer 2 and sensor capacitor driving layer 3.

[0042] Example 2

[0043] Combine Figure 4 、 Figure 5 、 Figure 6 and Figure 7The touch screen with integrated FPC resistance and capacitance functions of the present invention includes a substrate layer 1, a cover plate 6, and a liquid crystal display module 7; the substrate layer 1 includes an upper line substrate layer 11 and a lower line substrate layer 12, the upper line substrate layer 11 is coated with a first conductive layer on the front surface, and the lower line substrate layer 12 is coated with a second conductive layer on the front surface, and the upper line substrate layer 11 and the lower line substrate layer 12 are connected by a third adhesive layer 83; the cover plate 6 is connected to the first conductive layer via a first adhesive layer 81, and the liquid crystal display module 7 is connected to the second conductive layer via a second adhesive layer 82; the first conductive layer includes a sensor capacitor sensing layer 2 and an FPC capacitor 1 51, and the FPC capacitor 1 51 and the sensor capacitor sensing layer 2 are subjected to a yellow light process or a embossing process of exposure, development, and etching to obtain edge routing and in-plane patterns; the second conductive layer includes a sensor capacitor driving layer 3, an FPC resistor 4, and an FPC capacitor 1 52. The FPC resistor 4, FPC capacitor 1 52, and sensor capacitor drive layer 3 undergo a yellow light process of exposure, development, and etching, or a embossing process, to produce edge traces and in-plane patterns. FPC capacitor 1 51, FPC capacitor 2 52, and FPC resistor 4 are located in the inactive areas of the sensor capacitor sensing layer 2 and sensor capacitor drive layer 3. FPC capacitor 1 51, FPC capacitor 2 52, and FPC resistor 4 are introduced into the bonding area of ​​the touchscreen sensor via edge traces and pressed together with the FPC body via an ACF to achieve functional conduction. The cover plate 6 has a thickness of 0.4 mm to 1.8 mm. The cover plate 6 can be either glass or plastic. The thickness of the first and second conductive layers is 20 nm to 2 μm. The conductive material of the first and second conductive layers is Cu, Ag, or ITO. The line width and line spacing of the edge traces range from 10 μm / 10 μm to 40 μm / 40 μm. Liquid crystal display module 7 is a TFT liquid crystal display module, an IPS liquid crystal display module, or a flexible OLED display. Adhesive layer 1 81, adhesive layer 2 82, and adhesive layer 3 83 are solid optically transparent adhesives with a thickness of 0.025 mm to 2 cm. The etching method for FPC resistor 4 is as follows: Based on the required number and resistance value of resistors, when etching the touch screen sensor, a corresponding number and size of ITO blocks are simultaneously etched in the inactive area of ​​sensor capacitor sensing layer 2 or sensor capacitor driving layer 3. These blocks are then pulled to the sensor bonding area using edge traces and pressed together with the FPC to achieve functional conduction. The resistance value is only related to the length and thickness of the material.The etching method of FPC capacitors is as follows: According to the required capacitance value, when etching the touch screen sensor, synchronously etch out an ITO block of corresponding area in the invalid area of ​​sensor capacitor sensing layer 2 and sensor capacitor driving layer 3, and then use the edge routing to pull it to the sensor bonding area, and press it together with the FPC to achieve functional conduction. The capacitance value is obtained by changing the ITO area of ​​sensor capacitor sensing layer 2 and sensor capacitor driving layer 3.

[0044] In the above description, many specific details are set forth in order to fully understand the present invention. However, the above description is only a preferred embodiment of the present invention. The present invention can be implemented in many other ways different from those described herein, so the present invention is not limited to the specific implementation disclosed above. At the same time, any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

Claims

1. A touch screen with integrated FPC resistance and capacitance functions, characterized by: The invention comprises a substrate layer (1), a cover plate (6) and a liquid crystal display module (7); the front coating of the substrate layer (1) is provided with a first conductive layer, and the back coating of the substrate layer (1) is provided with a second conductive layer; the cover plate (6) is connected to the first conductive layer via a first adhesive layer (81), and the liquid crystal display module (7) is connected to the second conductive layer via a second adhesive layer (82); The first conductive layer includes a sensor capacitor sensing layer (2), an FPC resistor (4) and an FPC capacitor 1 (51), and the FPC resistor (4), the FPC capacitor 1 (51) and the sensor capacitor sensing layer (2) are subjected to a yellow light process or a stamping process of exposure, development, and etching to obtain edge traces and an in-plane pattern. The second conductive layer includes a sensor capacitor driving layer (3) and an FPC capacitor 2 (52), and the FPC capacitor 2 (52) and the sensor capacitor driving layer (3) are subjected to a yellow light process or a stamping process of exposure, development, and etching to obtain edge traces and an in-plane pattern. Alternatively, the first conductive layer includes a sensor capacitor sensing layer (2) and an FPC capacitor 1 (51), and the FPC capacitor 1 (51) and the sensor capacitor sensing layer (2) are subjected to a yellow light process or a stamping process of exposure, development, and etching to obtain edge routing and an in-plane pattern; the second conductive layer includes a sensor capacitor driving layer (3), an FPC resistor (4), and an FPC capacitor 2 (52), and the FPC resistor (4), the FPC capacitor 2 (52), and the sensor capacitor driving layer (3) are subjected to a yellow light process or a stamping process of exposure, development, and etching to obtain edge routing and an in-plane pattern; FPC capacitor 1 (51) is located in the invalid area of ​​the sensor capacitor sensing layer (2), FPC capacitor 2 (52) is located in the invalid area of ​​the sensor capacitor driving layer (3), and FPC resistor (4) is located in the invalid area of ​​one of the sensor capacitor sensing layer (2) or the sensor capacitor driving layer (3). FPC capacitor 1 (51), FPC capacitor 2 (52), and FPC resistor (4) are introduced into the bonding area of ​​the touch screen sensor through edge wiring, and are pressed together with the FPC body through ACF to achieve functional conduction.

2. The touch screen with integrated FPC resistance and capacitance functions according to claim 1, characterized in that: The cover plate (6) has a thickness of 0.4 mm to 1.8 mm.

3. The touch screen with integrated FPC resistance and capacitance functions according to claim 1, characterized in that: The thickness of the first conductive layer and the second conductive layer is 20 nm to 2 μm.

4. The touch screen with integrated FPC resistance and capacitance functions according to claim 1, characterized in that: The conductive materials of the first conductive layer and the second conductive layer are Cu or Ag, or ITO, and the line width and line spacing of the edge lines are both 10 μm to 40 μm.

5. The touch screen with integrated FPC resistance and capacitance functions according to claim 1, characterized in that: The liquid crystal display module (7) is a TFT liquid crystal display module or an IPS liquid crystal display module, or a flexible OLED display.

6. The touch screen with integrated FPC resistance and capacitance functions according to any one of claims 1 to 5, characterized in that: The substrate layer (1) comprises an upper-line substrate layer (11) and a lower-line substrate layer (12), wherein the upper-line substrate layer (11) is coated with a first conductive layer on its front surface, and the lower-line substrate layer (12) is coated with a second conductive layer on its front surface, and the upper-line substrate layer (11) and the lower-line substrate layer (12) are connected via a third adhesive layer (83).

7. The touch screen with integrated FPC resistance and capacitance functions according to claim 6, characterized in that: The adhesive layer 1 (81), the adhesive layer 2 (82) and the adhesive layer 3 (83) are solid optically transparent adhesives with a thickness of 0.025 mm to 2 cm.

8. The touch screen with integrated FPC resistance and capacitance functions according to claim 1, characterized in that: The etching method of the FPC resistor (4) is as follows: according to the required number and value of resistors, when etching the touch screen sensor, a corresponding number and size of ITO blocks are simultaneously etched in the invalid area of ​​the sensor capacitor sensing layer (2) or the sensor capacitor driving layer (3), and then the blocks are pulled to the sensor bonding area by edge routing and pressed together with the FPC to achieve functional conduction. The resistance value is only related to the length and thickness of the material.

9. The touch screen with integrated FPC resistance and capacitance functions according to claim 1, characterized in that: The etching method of the FPC capacitor is as follows: according to the required capacitance value, when etching the touch screen sensor, an ITO block of the corresponding area is simultaneously etched in the inactive area of ​​the sensor capacitance sensing layer (2) and the sensor capacitance driving layer (3), and then the block is pulled to the sensor bonding area by edge routing and pressed together with the FPC to achieve functional conduction. The capacitance value is obtained by changing the ITO area of ​​the sensor capacitance sensing layer (2) and the sensor capacitance driving layer (3).

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