CN103558936B - Touch panel - Google Patents

Abstract

A touch panel includes a substrate, a patterned conductive layer and a sensing control circuit. The patterned conductive layer includes a plurality of columns of first sensing pads, a plurality of rows of second sensing pads and a plurality of third sensing pads. Each first sensing pad has a first opening, each second sensing pad has a second opening, and each third sensing pad has a third opening. The first sensing pad and the second sensing pad are formed in the main sensing area of the patterned conductive layer, and the third sensing pad is formed in the peripheral area of the patterned conductive layer. The sensing control circuit is used to perform touch sensing operations using the plurality of columns of first sensing pads and the plurality of rows of second sensing pads, and to use the plurality of third sensing pads as receiving electrodes for proximity sensing operations. The touch panel of the present invention can perform proximity sensing operations. In addition, by specially setting up the transmitting electrode and the receiving electrode for proximity sensing, the capacitance value between them will not be too large, so that the touch panel can have a high sensitivity to proximity sensing.

Description

touch panel

technical field

The present invention relates to a touch panel, in particular to a touch panel including a touch sensing function and a proximity sensing function.

Background technique

Due to the characteristic of human-computer interaction, the touch panel has gradually replaced the keyboard and is widely used in the input interface of the electronic device. In recent years, with the development of more and more applications of consumer electronic products, there are more and more application products that combine touch panels and displays to form touch display devices, including mobile phones, satellite navigation system (GPSnavigatorsystem), tablet PC (tabletPC) and notebook computer (laptopPC), etc.

When the user operates the touch panel, he usually needs to directly touch the touch panel with his fingers. Such an operation method may easily accumulate germs on the surface of the touch panel, and become a medium for spreading germs between different users. For example, in a gym, a treadmill that uses a touch panel as an input mechanism is an easy vector for the spread of germs. Therefore, in recent years, the touch panel has integrated the proximity sensor, so that the touch panel has both the touch sensing function and the proximity sensing function. The user can not only operate the electronic device by touch, but also operate the electronic device without touching the surface of the sensing module through the integrated proximity sensor. However, the touch panel with both touch and proximity sensing functions in the prior art has poor proximity sensing sensitivity, which causes inconvenience to the user's operation.

Contents of the invention

An embodiment of the invention provides a touch panel. The touch panel includes a substrate, a patterned conductive layer, and a sensing control circuit. The patterned conductive layer is disposed on the side of the substrate, has a main sensing area and a peripheral area, and includes multiple rows of first sensing pads, multiple rows of second sensing pads, and multiple third sensing pads. The plurality of rows of first sensing pads are distributed in the main sensing area, each row of first sensing pads includes a plurality of first sensing pads coupled to each other, and each first sensing pad has a first opening. The multiple rows of second sensing pads are distributed in the main sensing area, each row of second sensing pads includes a plurality of second sensing pads coupled to each other, and each second sensing pad has a second opening . The plurality of third sensing pads are distributed in the peripheral area, each third sensing pad has a third opening, and the plurality of third sensing pads, the plurality of columns of first sensing pads and the plurality of rows of first sensing pads The two sensing pads are electrically separated. The sensing control circuit is coupled to the multiple rows of first sensing pads, the multiple rows of second sensing pads and the multiple third sensing pads, and is used for using the multiple rows of first sensing pads and the multiple rows of second sensing pads. The sensing pads perform touch sensing operations, and use the plurality of third sensing pads as receiving electrodes to perform proximity sensing operations.

An embodiment of the invention provides a touch panel. The touch panel includes a substrate, a patterned conductive layer, and a sensing control circuit. The patterned conductive layer is disposed on the side of the substrate, has a main sensing area and a peripheral area, and includes multiple rows of first sensing pads, multiple rows of second sensing pads, and multiple third sensing pads. The above-mentioned multiple columns of first sensing pads are distributed in the main sensing area, each column of first sensing pads includes a plurality of first sensing pads coupled to each other, and each first sensing pad has a first opening. The multiple rows of second sensing pads are distributed in the main sensing area, each row of second sensing pads includes a plurality of second sensing pads coupled to each other, and each second sensing pad has a second opening . The plurality of third sensing pads are distributed in the peripheral area, and each third sensing pad has a third opening. The sensing control circuit is coupled to the plurality of rows of first sensing pads, the plurality of rows of second sensing pads, and the plurality of third sensing pads, and is used for using the plurality of first sensing pads to The sensing pads, the plurality of second sensing pads and the plurality of third sensing pads perform touch sensing operations, and are used to use the plurality of third sensing pads as receiving electrodes in the plurality of second time periods for proximity distance sensing operation. Wherein, the above-mentioned multiple first time periods and multiple second time periods are set alternately in time sequence.

An embodiment of the invention provides a touch panel. The touch panel includes a substrate, a patterned conductive layer, and a sensing control circuit. The patterned conductive layer is disposed on the side of the substrate, has a main sensing area and a peripheral area, and includes multiple rows of first sensing pads, multiple rows of second sensing pads, and multiple third sensing pads. The plurality of rows of first sensing pads are distributed in the main sensing area, each row of first sensing pads includes a plurality of first sensing pads coupled to each other, and each first sensing pad has a first opening. The plurality of rows of second sensing pads are distributed in the main sensing area, each row of second sensing pads includes a plurality of second sensing pads coupled to each other, and each second sensing pad has a second opening. The plurality of third sensing pads are distributed in the peripheral area, and each third sensing pad has a third opening. The sensing control circuit is coupled to the plurality of rows of first sensing pads, the plurality of rows of second sensing pads, and the plurality of third sensing pads, and is used to control the touch panel by the plurality of rows when the touch panel is in the first operation mode. The first sensing pad and the plurality of second sensing pads perform a touch sensing operation, and use the plurality of third sensing pads as receiving electrodes to perform a proximity sensing operation. The sensing control circuit is also used to perform touch sensing operation through the first parts of the plurality of first sensing pads and the plurality of second sensing pads when the touch panel is in the second operation mode, and The plurality of first sensing pads and/or the second part of the plurality of second sensing pads and the plurality of third sensing pads are used as receiving electrodes to perform proximity sensing operation.

An embodiment of the invention provides a touch panel. The touch panel includes a substrate, a patterned conductive layer, and a sensing control circuit. The patterned conductive layer is disposed on the side of the substrate, has a main sensing area and a peripheral area, and includes multiple columns of first sensing pads, multiple rows of second sensing pads, and multiple receiving electrodes. The above-mentioned multiple columns of first sensing pads distribute the main sensing area and the peripheral area, each column of first sensing pads includes a plurality of first sensing pads coupled to each other, and each first sensing pad has a first opening . The plurality of rows of second sensing pads are distributed in the main sensing area and the peripheral area, each row of second sensing pads includes a plurality of second sensing pads coupled to each other, and each second sensing pad has a second Open your mouth. The plurality of receiving electrodes are selectively distributed in some or all of the first openings and/or second openings in the main sensing region and/or the peripheral region, and the plurality of receiving electrodes, the plurality of rows of first sensing pads and the plurality of rows of second sensing pads are electrically separated. The sensing control circuit is coupled to the plurality of rows of first sensing pads, the plurality of rows of second sensing pads, and the plurality of receiving electrodes, for performing the operation through the plurality of first sensing pads and the plurality of second sensing pads. The touch sensing operation is performed, and the proximity sensing operation is performed through the above-mentioned plurality of receiving electrodes.

An embodiment of the invention provides a touch panel. The touch panel includes a substrate, a patterned conductive layer, and a sensing control circuit. The patterned conductive layer is disposed on the side of the substrate, has a main sensing area and a peripheral area, and includes multiple rows of first sensing pads and multiple rows of second sensing pads. The multiple rows of first sensing pads are distributed in the main sensing area and the peripheral area, each row of first sensing pads includes a plurality of first sensing pads coupled to each other, and each first sensing pad has a first opening . The plurality of rows of second sensing pads are distributed in the main sensing area and the peripheral area, each row of second sensing pads includes a plurality of second sensing pads coupled to each other, and each second sensing pad has a second Open your mouth. The sensing control circuit is coupled to the plurality of rows of first sensing pads and the plurality of rows of second sensing pads, and is used for using the plurality of first sensing pads and the plurality of second sensing pads in a plurality of first time periods. The touch sensing pads perform touch sensing operations, and are used to use some or all of the above-mentioned rows of first sensing pads and/or rows of second sensing pads as receiving electrodes for short-distance sensing operation. Wherein, the above-mentioned multiple first time periods and multiple second time periods are set alternately in time sequence.

Through the touch panel of the embodiment of the present invention, not only the touch sensing operation but also the proximity sensing operation can be performed. In addition, by specially setting the transmitting electrode and the receiving electrode as the proximity sensing, the capacitance between them will not be too large, so that the touch panel has a high sensitivity to the proximity sensing.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

FIG. 1 is a schematic diagram of a touch panel according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of a patterned conductive layer of the touch panel of FIG. 1 .

FIG. 3 is a schematic diagram of multiple rows of first sensing pads in the patterned conductive layer of FIG. 2 .

FIG. 4 is a schematic diagram of multiple rows of second sensing pads of the patterned conductive layer in FIG. 2 .

FIG. 5 is a schematic diagram of a plurality of third sensing pads of the patterned conductive layer of FIG. 2 .

FIG. 6 is a schematic diagram of the capacitances of the touch panel of FIG. 1 when the user's hand approaches.

FIG. 7 is an equivalent circuit diagram of the touch panel of FIG. 6 .

FIG. 8 is a schematic diagram of an emitter electrode layer and a patterned conductive layer according to an embodiment of the present invention.

FIG. 9 is a schematic diagram of an emitter electrode layer and a patterned conductive layer according to another embodiment of the present invention.

10 is a timing diagram of the sensing control circuit controlling the first sensing pad, the second sensing pad and the third sensing pad according to an embodiment of the present invention.

FIG. 11 is a schematic diagram of a patterned conductive layer according to another embodiment of the present invention.

FIG. 12 is a schematic diagram of multiple rows of first sensing pads in the patterned conductive layer of FIG. 11 .

FIG. 13 is a schematic diagram of multiple rows of second sensing pads of the patterned conductive layer in FIG. 11 .

FIG. 14 is a schematic diagram of an emitter electrode layer and a patterned conductive layer according to an embodiment of the present invention.

FIG. 15 is a schematic diagram of an emitter electrode layer and a patterned conductive layer according to another embodiment of the present invention.

FIG. 16 is a schematic diagram of a touch panel according to an embodiment of the present invention.

FIG. 17 is a schematic diagram of electrodes distributed in the first opening and the second opening in an embodiment of the present invention.

FIG. 18 is a schematic diagram of electrodes distributed in the first opening and the second opening in another embodiment of the present invention.

Among them, reference signs

10, 200 touch panel

20 LCD display and backlight module

30 emitter electrode layer

32 fourth opening

40 substrates

50, 50'patterned conductive layer

60 surface layer

70 sensing control circuit

80 first sensing pads

82 first opening

84 floating electrodes

86 first bridge wire

90 second sensing pad

92 second opening

94 floating electrodes

96 second bridge wire

100 third sensing pad

102 third opening

106, 184, 194 electrodes

110 user's hand

A1 main sensing area

Surrounding area of A2

C0 to C7 multi-row second sensing pads

CF, CTX-RX, CTX, CRX-GND capacitors

GND ground terminal

R0 to R10 multi-column first sense pads

T1 first period

T2 second period

VTX AC power supply

X first direction

Y second direction

detailed description

The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the present invention, but it is not intended to limit the scope of protection of the appended claims of the present invention.

Please refer to FIG. 1 , which is a schematic diagram of a touch panel 10 according to an embodiment of the present invention. In this embodiment, the touch panel 10 is a liquid crystal display touch panel, and includes a liquid crystal display and backlight module 20, an emitter electrode layer 30, a substrate 40, a patterned conductive layer 50, a surface layer 60, and a sensing control circuit 70. . The liquid crystal display and backlight module 20 includes a liquid crystal display element and a backlight element, wherein the liquid crystal display element is composed of liquid crystal molecules, transistors, data lines, scanning lines...etc. To provide the light required by the liquid crystal display element when displaying images. The emitter electrode layer 30 is formed between the liquid crystal display and backlight module 20 and the substrate 40 and is used as an emitter electrode for proximity sensing. The substrate 40 is formed between the emitter electrode layer 30 and the patterned conductive layer 50 , and can be made of transparent material (such as glass, plastic, etc.), but the invention is not limited thereto. The patterned conductive layer 50 is formed on one side of the substrate 40, and includes a plurality of patterned sensing pads, and the patterned sensing pads include sensing pads for touch sensing and proximity sensing. The sensing pad of the receiving electrode. In addition, the materials of the emitter electrode layer 30 and the patterned conductive layer 50 may include, for example, indium tin oxide (ITO), indium zinc oxide (IZO), or other transparent conductive materials with high light transmittance and good conductivity. . The surface layer 60 is a transparent plate, and the user can perform a touch sensing operation by touching the surface layer 60 . The sensing control circuit 70 is coupled to the liquid crystal display and backlight module 20 , the emitter electrode layer 30 and the patterned conductive layer 50 to control the operation of the liquid crystal display and the backlight module 20 . The touch sensing operation and the proximity sensing operation are performed by patterning the conductive layer 50 and the emitter electrode layer 30 . In addition, it should be understood that the touch panel in other embodiments of the present invention may not have the liquid crystal display and the backlight module 20 because the function of displaying images is not an essential function of the touch panel of the present invention.

Please refer to FIG. 2 to FIG. 5, FIG. 2 is a schematic diagram of the patterned conductive layer 50 of the touch panel 10 in FIG. 1, and FIG. 4 is a schematic diagram of multiple rows of second sensing pads C1 to C6 of the patterned conductive layer 50 of FIG. 2 , and FIG. 5 is a schematic diagram of multiple third sensing pads 100 of the patterned conductive layer 50 of FIG. 2 . The patterned conductive layer 50 has a main sensing area A1 and a peripheral area A2, and the main sensing area A1 is surrounded by the peripheral area A2. The patterned conductive layer 50 includes a plurality of columns of first sensing pads R1 to R9 , a plurality of rows of second sensing pads C1 to C6 and a plurality of third sensing pads 100 . A plurality of rows of first sensing pads R1 to R9 are distributed in the main sensing region A1 in a manner substantially parallel to the first direction X, and each row of first sensing pads R1 to R9 includes a plurality of first sensing pads 80 . Each first sensing pad 80 has a first opening 82 and is coupled to the first sensing pads 80 in the same column through a first bridge line 86 . The plurality of rows of second sensing pads C1 to C6 are distributed in the main sensing area A1 in a manner substantially parallel to the second direction Y, and each row of second sensing pads C1 to C6 includes a plurality of second sensing pads. Measuring pad 90. Wherein, the second direction Y is substantially perpendicular to the first direction X. Each second sensing pad 90 has a second opening 92 and is coupled to the second sensing pads 90 in the same row through a second bridge line 96 . The second bridging line 96 is isolated from the first bridging line 86 by an insulator without direct contact. The plurality of third sensing pads 100 are distributed in the peripheral area A2 , and each third sensing pad 100 has a third opening 102 . In an embodiment of the present invention, the plurality of third sensing pads 100 , the plurality of rows of first sensing pads R1 to R9 and the plurality of rows of second sensing pads C1 to C6 are electrically separated.

It should be understood that although FIG. 2 to FIG. 4 depict nine rows of first sensing pads R1 to R9 and six rows of second sensing pads C1 to C6, the first sensing pads of the touch panel of the present invention The number of columns 80 and the number of rows of the second sensing pads 90 are not limited thereto, and may be other numbers of columns or rows. In addition, the first sensing pad 80 and the second sensing pad 90 may be diamond-shaped sensing pads, and the third sensing pad 100 may be a triangular sensing pad, but the shape of each sensing pad is not limited thereto. . Furthermore, the first opening 82 and the second opening 92 are respectively closed openings (such as diamond-shaped openings), and the third opening 102 is a triangular opening, but the shape of each opening is not limited thereto. The shapes of the first opening 82 , the second opening 92 and the third opening 102 can also be other geometric shapes, such as rectangle, circle or polygon. In an embodiment of the invention, a plurality of first floating dummy 84 and 94 may be formed in the first opening 82 and the second opening 92 . In another embodiment of the present invention, a plurality of electrodes 106 may be formed in the third opening 102, and the electrodes 106 may be second floating electrodes or ground electrodes. Wherein, the first floating electrodes 84 and 94 and the second floating electrodes are in a floating state, and are not used for touch sensing operation or proximity sensing operation.

Please refer to FIG. 1 and FIG. 2 again, the above-mentioned sensing control circuit 70 is coupled to the above-mentioned multiple rows of first sensing pads R1 to R9, multiple rows of second sensing pads C1 to C6 and multiple third sensing pads. 100. The sensing control circuit 70 performs a touch sensing operation through multiple rows of first sensing pads R1 to R9 and multiple rows of second sensing pads C1 to C6, and uses the multiple third sensing pads 100 as receiving electrodes to Perform proximity sensing operations. Specifically, the sensing control circuit 70 senses changes in the capacitance values of the first sensing pads R1 to R9 in each row and the second sensing pads C1 to C6 in each row, and judges that the touch panel 10 is touched accordingly. s position. In addition, the sensing control circuit 70 uses the transmitting electrode layer 30 as the transmitting electrode for the short-distance sensing operation, and uses the above-mentioned plurality of third sensing pads 100 as the receiving electrodes for the short-distance sensing operation. The change of the capacitance value between the emitter electrode layer 30 and the plurality of third sensing pads 100 can determine the position and distance of a foreign object (eg, user's hand) approaching the touch panel 10 .

Please refer to Figure 6 and Figure 7. FIG. 6 is a schematic diagram of the capacitances of the touch panel 10 when the user's hand 100 approaches, and FIG. 7 is an equivalent circuit diagram of the touch panel 10 of FIG. 6 . Wherein, the capacitance between the third sensing pad 100 of the patterned conductive layer 50 (that is, the receiving electrode) and the user's hand 110 is represented by _CF , and the capacitance between the emitting electrode layer 30 and the plurality of third sensing pads 100 The capacitance is represented by _CTX-RX , the capacitance between the emitter electrode layer 30 and the ground terminal GND is represented by CTX, the capacitance between the third sensing pad 100 of the patterned conductive layer 50 and the ground terminal GND is represented by C _{RX -GND} represents, and the emitter electrode layer 30 is electrically coupled to the AC power V _TX . Assuming that the voltage of the third sensing pad 100 is V _RX and the frequency of the AC power V _TX is S, the voltage V _RX can be expressed as:

${\mathrm{<span\; class="notranslate">\; V</span>}}_{\mathrm{<span\; class="notranslate">\; RX</span>}}<span\; class="notranslate">\; =</span>\begin{array}{c}{\mathrm{<span\; class="notranslate">\; V</span>}}_{\mathrm{<span\; class="notranslate">\; TX</span>}}<span\; class="notranslate">\; \&times;</span>\frac{\frac{\mathrm{<span\; class="notranslate">\; 1</span>}}{{\mathrm{<span\; class="notranslate">\; SC</span>}}_{\mathrm{<span\; class="notranslate">\; f</span>}}}}{\frac{\mathrm{<span\; class="notranslate">\; 1</span>}}{\mathrm{<span\; class="notranslate">\; S</span>}<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; C</span>}}_{\mathrm{<span\; class="notranslate">\; f</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; C</span>}}_{\mathrm{<span\; class="notranslate">\; RX</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; GND</span>}}<span\; class="notranslate">\; )</span>}<span\; class="notranslate">\; +</span>\frac{\mathrm{<span\; class="notranslate">\; 1</span>}}{{\mathrm{<span\; class="notranslate">\; SC</span>}}_{\mathrm{<span\; class="notranslate">\; TX</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; RX</span>}}}}\\ <span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; V</span>}}_{\mathrm{<span\; class="notranslate">\; TX</span>}}<span\; class="notranslate">\; \&times;</span>\frac{{\mathrm{<span\; class="notranslate">\; C</span>}}_{\mathrm{<span\; class="notranslate">\; TX</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; RX</span>}}}{<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; C</span>}}_{\mathrm{<span\; class="notranslate">\; f</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; C</span>}}_{\mathrm{<span\; class="notranslate">\; RX</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; GND</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; C</span>}}_{\mathrm{<span\; class="notranslate">\; TX</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; RX</span>}}}\end{array}$

It can be seen from the above equation that if the capacitance C _TX-RX is too large, the variation of the voltage V _RX will be reduced. Since the sensing control circuit 70 judges whether there is an approaching foreign object according to the voltage V _RX , if the variation of the voltage V _RX is too low, it will seriously affect the sensitivity of the touch panel 10 for proximity sensing. Therefore, in order to make the touch panel 10 have higher sensitivity to proximity sensing, it can be achieved by reducing the capacitance of the capacitor C _TX-RX . Furthermore, since the capacitance of the capacitor _CTX-RX is proportional to the effective area between the emitter electrode layer 30 and the plurality of third sensing pads 100, and is proportional to the effective area between the emitter electrode layer 30 and the plurality of third sensing pads 100 The distance between them is inversely proportional to the distance, so in order to make the capacitor C _TX-RX have a lower capacitance value to improve the short-distance sensing sensitivity of the touch panel 10, it is possible to reduce the emitter electrode layer 30 and a plurality of third sensing pads 100 The effective area between them can be achieved by increasing the distance between the emitter electrode layer 30 and the plurality of third sensing pads 100 (ie, the thickness of the substrate 40 ). Please refer to Figure 5 again. Since the third sensing pads 100 are distributed in the peripheral area A2 of the patterned conductive layer 50, the effective area between the emitter electrode layer 30 and the plurality of third sensing pads 100 will not be too large, thus effectively reducing the capacitance C _TX - the capacitance of _RX , so that the touch panel 10 has higher sensitivity for proximity sensing. In addition, the capacitance value of the capacitor C _TX-RX can also be adjusted by changing the ratio between the area of any electrode 106 and the area of any third sensing pad 100, and the area of the above electrode 106 and the third sensing pad 100 can be adjusted. The ratio of the areas of the measuring pad 100 may be between 0.2 and 0.9. The area of the third sensing pad 100 corresponding to the larger ratio is usually smaller, and the capacitance value of the corresponding capacitor C _TX-RX is also smaller; and the third sensing pad 100 corresponding to the smaller ratio The area of is generally larger, and the capacitance value of the corresponding capacitor C _TX-RX is also larger.

The capacitance value of the above-mentioned capacitor C _TX-RX can be reduced by distributing the third sensing pads 100 in the peripheral area A2 of the patterned conductive layer 50 as mentioned above, and can also be reduced by reducing the area of the emitter electrode layer 30 way to reduce. Please refer to FIG. 8 , which is a schematic diagram of the emitter electrode layer 30 and the patterned conductive layer 50 according to an embodiment of the present invention. Wherein the area of the emitter electrode layer 30 is smaller than the area of the patterned conductive layer 50 , thereby further reducing the capacitance value of the capacitor C _TX-RX . Please refer to FIG. 9 , which is a schematic diagram of the emitter electrode layer 30 and the patterned conductive layer 50 according to another embodiment of the present invention. Wherein the emitter electrode layer 30 has a plurality of fourth openings 32 to further reduce the capacitance value of the capacitor C _TX-RX . Wherein, the position of the fourth opening 32 is not limited to the position shown in FIG. 9 .

In addition, because the touch panel is often used in handheld mobile devices (such as mobile phones, tablet computers, etc.), and when the user holds the mobile device, he usually touches the frame of the mobile device, so the capacitance value of the above-mentioned capacitor C _F It is affected by the user holding the edge of the touch panel 10 . In addition, the narrow bezel is the mainstream of current handheld mobile devices, which makes the above-mentioned capacitance value of the capacitor _CF very easily affected by the edge of the touch panel 10 held by the user. To improve the above problems, in an embodiment of the present invention, the electrode 106 is used as a ground electrode. In this case, if the user holds the edge of the touch panel 10, the user's hand will be grounded by the electrode 106, so that the above- _mentioned capacitance value of the capacitor CF will be avoided due to the user's hand holding the touch panel 10. The edge of the touch panel 10 is affected, thereby preventing the proximity sensing sensitivity of the touch panel 10 from being affected by the user holding the edge of the touch panel 10 .

In an embodiment of the present invention, the third sensing pad 100 can also be used for touch sensing in addition to being used as a receiving electrode for proximity sensing. Please refer to FIG. 10 and also refer to FIG. 2 . FIG. 10 is a timing diagram of the sensing control circuit 70 controlling the first sensing pad 80 , the second sensing pad 90 and the third sensing pad 100 according to an embodiment of the present invention. Wherein, the plurality of first time periods T1 and the plurality of second time periods T2 are arranged alternately in time sequence. The sensing control circuit 70 performs a touch sensing operation through the first sensing pad 80 , the second sensing pad 90 and the third sensing pad 100 in each first period T1; and in each second period T2, the third sensing pad 100 is used as a receiving electrode to perform proximity sensing operation. Since the third sensing pad 100 can be used for touch sensing and proximity sensing in this embodiment, compared with the embodiment of the present invention where the third sensing pad 100 is only used for proximity sensing , the operating area used for touch sensing in this embodiment will be larger.

In addition, in an embodiment of the present invention, the first sensing pad 80 and the second sensing pad 90 can be used not only for touch sensing, but also as receiving electrodes for proximity sensing. Please refer to Figure 1 and Figure 2 again. In an embodiment of the present invention, the touch panel 10 can be operated in different modes, and part of the first sensing pad 80 and/or the second sensing pad 90 can be used as a touch sensor in different operating modes. Measurement and proximity sensing purposes. For example, when the touch panel 10 is in the first operation mode, the sensing control circuit 70 can perform a touch sensing operation through all the first sensing pads 80 and all the second sensing pads 90, and All the third sensing pads 100 are used as receiving electrodes for short-distance sensing operation; and when the touch panel 10 is in the second operation mode, the sensing control circuit 70 senses The first part of the pad 90 performs a touch sensing operation, and the second part of the first sensing pad 70 and/or the second sensing pad 90 and all the third sensing pads 100 are used as receiving electrodes for the touch sensing operation. Proximity sensing operation. Wherein, the above-mentioned first part and second part can have different settings according to operational requirements. For example, the first part may include the first to eighth rows of first sensing pads R1 to R8 and the first to fifth rows of second sensing pads C1 to C5, while the second part may include the ninth row of first sensing pads C1 to C5. A sensing pad R9 and a sixth row of second sensing pads C6. For another example, the first part may include the first to ninth rows of first sensing pads R1 to R9 and the first to fifth rows of second sensing pads C1 to C5, while the second part may include the sixth row of second sensing pads. Sensing Pad C6. Alternatively, the first part may include the second to ninth rows of first sensing pads R2 to R9 and the first to sixth rows of second sensing pads C1 to C6, while the second part includes the first row of first sensing pads. Measuring pad R1. Taking FIG. 9 as an example, the second part can be the first sensing pad 80 and the second sensing pad 90 corresponding to the fourth opening 32, and the first part can be other first sensing pads 80 and second sensing pads. Measuring pad 90. It should be understood that the above-mentioned descriptions of the first part and the second part are only for illustration and not for limiting the present invention, those skilled in the art can make equal changes according to the content disclosed in the present invention. Since the first sensing pad 80 and the second sensing pad 90 in this embodiment can be used for touch sensing or as receiving electrodes for proximity sensing in different operation modes, compared with the present invention In an embodiment where the first sensing pad 80 and the second sensing pad 90 are only used for touch sensing, the touch panel 10 of this embodiment can operate in different modes, so that the first sensing pad 80 and the The second sensing pad 90 corresponds to different operation modes, and is used for touch sensing or as a receiving electrode for proximity sensing, so it is more flexible in use.

Please refer to FIG. 11 to FIG. 13. FIG. 11 is a schematic diagram of a patterned conductive layer 50' according to another embodiment of the present invention, and FIG. 12 is a multi-column first sensing pad R0 to R10 of the patterned conductive layer 50' in FIG. 13 is a schematic diagram of multiple rows of second sensing pads C0 to C7 of the patterned conductive layer 50 ′ of FIG. 11 . The patterned conductive layer 50' can be used to replace the patterned conductive layer 50 in FIG. 1 and become a part of the touch panel 10. Referring to FIG. The difference between the patterned conductive layer 50' and the aforementioned patterned conductive layer 50 is that the plurality of third sensing pads 100 located in the peripheral area A2 of the patterned conductive layer 50 are composed of two rows of first sensing pads of the patterned conductive layer 50'. Sensing pads R0, R10 and two rows of second sensing pads C0, C7 are replaced. The multiple columns of first sensing pads R0 to R10 of the patterned conductive layer 50' are distributed in the main sensing area A1 and the peripheral area A2 in a manner substantially parallel to the first direction X, and each column of the first sensing pads R0 to R10 includes a plurality of first sensing pads 80 . Each first sensing pad 80 has a first opening 82 and is coupled to the first sensing pads 80 in the same column through a first bridge line 86 . Multiple rows of second sensing pads C0 to C7 of the patterned conductive layer 50' are distributed in the main sensing area A1 and the peripheral area A2 in a manner substantially parallel to the second direction Y, and each row of second sensing pads C1 to C6 include a plurality of second sensing pads 90 . Each second sensing pad 90 has a second opening 92 and is coupled to the second sensing pads 90 in the same row through a second bridge line 96 .

In this embodiment, a plurality of electrodes 184 and 194 are formed in the first opening 82 and the second opening 92 , and the electrodes 184 and 194 are electrically separated from the first sensing pad 80 and the second sensing pad 90 . In order to enable the touch panel with the patterned conductive layer 50 ′ to have a proximity sensing function, some or all of the electrodes 184 and/or electrodes 194 are used as receiving electrodes when the sensing control circuit 70 performs a proximity sensing operation. In detail, all electrodes 184 and 194 can be used as receiving electrodes; or only part of electrodes 184 and 194 can be used as receiving electrodes; or only part or all of electrodes 184 can be used as receiving electrodes; Electrode 194 serves as a receiving electrode. In addition, the capacitance value of the capacitance C _TX-RX between the transmitting electrode layer 30 and the receiving electrodes 184 and/or 194 is related to the overlapping area between the transmitting electrode layer 30 and the receiving electrodes 184 and/or 194 . The smaller the overlapping area between the transmitting electrode layer 30 and the receiving electrodes 184 and/or 194 is, the smaller the capacitance of the capacitor C _TX-RX is. Since the area of the electrodes 184 and/or 194 as the receiving electrodes must be smaller than the area of the patterned conductive layer 50, and the area of the patterned conductive layer 50 is approximately equal to the area of the emitting electrode layer 30, the emitting electrode layer 30 and the receiving electrode 184 and The overlapping area between/or 194 will not be too large, so that the capacitance value of the capacitance C _TX-RX between the transmitting electrode layer 30 and the receiving electrodes 184 and/or 194 will not be too large, so that the touch panel can Proximity sensing has a high degree of sensitivity.

In addition to reducing the capacitance value between the transmitting electrode layer 30 and the receiving electrode by selectively distributing the transmitting electrodes in the first opening 82 and/or the second opening 92, it can also be reduced by reducing the size of the transmitting electrode. Layer 30 area is reduced by the way. Please refer to FIG. 14, which is a schematic diagram of the emitter electrode layer 30 and the patterned conductive layer 50' according to an embodiment of the present invention. The area of the emitter electrode layer 30 is smaller than the area of the patterned conductive layer 50', thereby further reducing the capacitance between the emitter electrode layer 30 and the receive electrode. Please refer to FIG. 15. FIG. 15 is a schematic diagram of an emitter electrode layer 30 and a patterned conductive layer 50' according to another embodiment of the present invention. The emitter electrode layer 30 has a plurality of fourth openings 32 to further reduce the capacitance between the emitter electrode layer 30 and the receive electrode. Wherein, the position of the fourth opening 32 is not limited to the position shown in FIG. 15 .

In an embodiment of the present invention, part of the electrodes 184 and/or electrodes 194 may be used as floating electrodes and formed in part of the first opening 82 and/or part of the second opening 92 in the main sensing region A1. Wherein, the electrodes 184 and/or electrodes 194 as floating electrodes are in a floating state, and are not used for touch sensing operation or proximity sensing operation. In another embodiment of the present invention, the electrodes 184 and 194 formed in the first opening 82 and the second opening 92 in the peripheral area A2 can be used as ground electrodes, thereby avoiding the sensitivity of the proximity sensing of the touch panel. Affected by the user holding the edge of the touch panel.

In addition, the transmitting electrodes and receiving electrodes for proximity sensing and the sensing pads for touch sensing can be formed in the same structural layer of the touch panel, and other embodiments of the present invention below all belong to such implementation modes . Please refer to FIG. 16 , which is a schematic diagram of a touch panel 200 according to an embodiment of the present invention. The touch panel 200 is similar to the touch panel 10, and the difference between the touch panel 200 and the touch panel 10 is that the touch panel 200 does not include the emitter electrode layer 30 of the touch panel 10, and the touch panel 200 serves as a near The emitter electrode for distance sensing is formed in the patterned conductive layer 50 ′. Taking the patterned conductive layer 50' in FIG. 11 as an example, in an embodiment of the present invention, the touch panel 200 may include a plurality of emitter electrodes, and the plurality of emitter electrodes are distributed in the first opening in the main sensing area A1 82 and the second opening 92 , that is, the electrode 184 and the electrode 194 in the main sensing area A1 serve as emitter electrodes. The touch panel 200 may further include a plurality of receiving electrodes formed in the first opening 82 and the second opening 92 in the peripheral area A2, that is, the electrodes 184 and 194 in the peripheral area A2 serve as receiving electrodes. In this embodiment, the above-mentioned transmitting electrode is electrically separated from the receiving electrode, the first sensing pad 80 and the second sensing pad 90, and the receiving electrode is also separated from the first sensing pad 80 and the second sensing pad 90 electrical separation. In addition, the sensing control circuit 70 performs a touch sensing operation through the first sensing pad 80 and the second sensing pad 90 in the main sensing area A1 and the peripheral area A2. Since both the transmitting electrode and the receiving electrode for proximity sensing are formed in the patterned conductive layer 50 ′, compared with the embodiment of the present invention in which the transmitting electrode and the receiving electrode are formed on different structural layers, the touch sensor of this embodiment The panel 200 may have a thinner thickness.

In an embodiment of the present invention, the electrodes 184 and 194 in the peripheral area A2 of the touch panel 200 are used as receiving electrodes, and the electrodes 184 and/or the first part of the electrodes 194 in the main sensing area A1 are used as transmitting electrodes. And the remaining electrodes 184 and/or electrodes 194 (ie, the second part) in the main sensing area A1 are used as floating electrodes. In addition, the sensing control circuit 70 performs a touch sensing operation through the first sensing pad 80 and the second sensing pad 90 in the main sensing area A1 and the peripheral area A2. In this embodiment, the above-mentioned transmitting electrode is electrically separated from the receiving electrode, the first sensing pad 80 and the second sensing pad 90, and the receiving electrode is electrically separated from the first sensing pad 80 and the second sensing pad 90 separate. Since only part of the electrodes 184 and/or electrodes 194 located in the main sensing area A1 are used as emitting electrodes, it is compared with the implementation of using the electrodes 184 and 194 located in the main sensing area A1 as emitting electrodes in the present invention. For example, the power consumed by the emitting electrode in this embodiment is relatively small.

In an embodiment of the present invention, a plurality of emitting electrodes and a plurality of receiving electrodes formed on the patterned conductive layer 50' are arranged in multiple columns and multiple rows, respectively. Please refer to FIG. 17 , which is a schematic diagram of the electrodes 184 and 194 distributed in the first opening 82 and the second opening 92 according to an embodiment of the present invention. Wherein, the emitter electrodes include electrodes located in the first openings 82 and the second openings 92 of multiple columns of first sensing pads R1, R3, R5, R7, R9 and multiple rows of second sensing pads C1, C3, C5, and C7. 184 and 194, and the receiving electrodes include first openings 82 and second openings 92 located in rows of first sensing pads R0, R2, R4, R6 and rows of second sensing pads C0, C2, C4, C6 The electrodes 184 and 194. It can be seen from Figure 17 that multiple columns of transmitting electrodes (located at R1, R3, R5, R7, R9) and multiple columns of receiving electrodes (located at R0, R2, R4, R6) are arranged alternately, while multiple rows of transmitting electrodes (located at C1, C3, C5, C7) and multiple rows of receiving electrodes (located at C0, C2, C4, C6) are alternately arranged. In addition, in this embodiment, the sensing control circuit 70 also performs touch sensing operations through the first sensing pads 80 and the second sensing pads 90 in the main sensing area A1 and the peripheral area A2 . Since the transmitting electrodes and the receiving electrodes are arranged alternately and evenly distributed on the patterned conductive layer 50 ′, compared with the embodiment in the present invention where the transmitting electrodes and the receiving electrodes are not arranged alternately, the position of the foreign object in this embodiment is more limited. more precise judgment.

In an embodiment of the present invention, the sensing control circuit 70 can pattern the plurality of first sensing pads 80 and the plurality of second sensing pads of the conductive layer 50 ′ during the first period T1 shown in FIG. 10 . 90 performs a touch sensing operation, and performs a proximity sensing operation using the plurality of first sensing pads 80 and the plurality of second sensing pads 90 of the patterned conductive layer 50' as emitter electrodes in the second period T2 . In addition, the plurality of electrodes 184 and 194 formed in the first opening 82 and the second opening 92 can be selectively used as receiving electrodes. In other words, all the electrodes 184 and/or 194 can be used as receiving electrodes, or only some of the electrodes 184 and/or 194 can be used as receiving electrodes. And when only part of the electrodes 184 and/or 194 are used as receiving electrodes, the rest of the electrodes 184 and/or 194 located in the main sensing area A1 can be used as floating electrodes. In addition, in another embodiment of the present invention, the electrodes 184 and/or 194 used as receiving electrodes are limited to the electrodes 184 and/or 194 located in the main sensing area A1, while the electrodes 184 and 194 located in the peripheral area A2 are not as a ground electrode.

In one embodiment of the present invention, the sensing control circuit 70 patterns the plurality of first sensing pads 80 and the plurality of second sensing pads 90 of the conductive layer 50 ′ within the first period T1 shown in FIG. 10 . Perform touch sensing operation, and use all or part of the first sensing pad 80 and/or part of the second sensing pad 90 of the patterned conductive layer 50' as receiving electrodes to perform proximity sensing in the second period T2 test operation. In other words, in the second period T2, all the first sensing pads 80 and all the second sensing pads 90 can be used as receiving electrodes, or only part of the first sensing pads 80 and/or part of the second sensing pads can be used as receiving electrodes. The measuring pad 90 acts as a receiving electrode. In addition, the plurality of electrodes 184 and 194 formed in the first opening 82 and the second opening 92 can be selectively used as emitter electrodes. That is, all the electrodes 184 and 194 can be used as emitter electrodes, or only some of the electrodes 184 and/or 194 can be used as emitter electrodes. In this embodiment, the aforementioned emitter electrodes are electrically separated from the first sensing pad 80 and the second sensing pad 90 . In addition, in another embodiment of the present invention, the electrodes 184 and/or 194 serving as emitter electrodes are limited to the electrodes 184 and/or 194 located in the main sensing area A1, while the electrodes 184 and 194 located in the peripheral area A2 are not as a ground electrode.

Please refer to FIG. 18 and also refer to FIG. 11 . FIG. 18 is a schematic diagram of the electrodes 184 and 194 distributed in the first opening 82 and the second opening 92 according to an embodiment of the present invention. In this embodiment, the sensing control circuit 70 performs touch control via the plurality of first sensing pads 80 and the plurality of second sensing pads 90 of the patterned conductive layer 50 ′ within the first period T1 shown in FIG. 10 . Control the sensing operation, and use all or part of the first sensing pad 80 and/or part of the second sensing pad 90 of the patterned conductive layer 50' as receiving electrodes to perform a short-distance sensing operation in the second period T2 . In other words, in the second period T2, all the first sensing pads 80 and all the second sensing pads 90 can be used as receiving electrodes, or only part of the first sensing pads 80 and/or part of the second sensing pads can be used as receiving electrodes. The measuring pad 90 acts as a receiving electrode. In addition, the electrodes 184 and 194 in the three rows of first sensing pads R1, R6, R9 and the two rows of second sensing pads C1, C6 are also used as receiving electrodes, while the electrodes 184 and 194 in other rows of first sensing pads and other rows of sensing pads are also used as receiving electrodes. The electrodes 184 and 194 in the two sensing pads serve as emitter electrodes.

To sum up, through the touch panel of the embodiment of the present invention, not only the touch sensing operation but also the proximity sensing operation can be performed. In addition, by specially setting the transmitting electrode and the receiving electrode as the proximity sensing, the capacitance between them will not be too large, so that the touch panel has a high sensitivity to the proximity sensing.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (23)

1. A touch panel, characterized in that, comprising: a substrate; A patterned conductive layer is disposed on one side of the substrate, the patterned conductive layer has a main sensing area and a peripheral area, and includes: Multiple rows of first sensing pads are distributed in the main sensing area, each of the rows of first sensing pads includes a plurality of first sensing pads coupled to each other, and each of the first sensing pads has a first opening; Multiple rows of second sensing pads are distributed in the main sensing area, each of the rows of second sensing pads includes a plurality of second sensing pads coupled to each other, and each of the second sensing pads has a the second opening; and A plurality of third sensing pads, distributed in the peripheral area, each of the third sensing pads has a third opening, wherein the third sensing pads, the rows of first sensing pads and the rows The second sensing pad is electrically separated; an emitter electrode layer, the substrate formed between the emitter electrode layer and the patterned conductive layer; and A sensing control circuit, coupled to the columns of first sensing pads, the rows of second sensing pads, and the third sensing pads, for The two sensing pads perform touch sensing operation, and use the emitting electrode layer and the third sensing pads as receiving electrodes to perform proximity sensing operation. 2. A touch panel, characterized in that, comprising: a substrate; A patterned conductive layer is disposed on one side of the substrate, the patterned conductive layer has a main sensing area and a peripheral area, and includes: Multiple rows of first sensing pads are distributed in the main sensing area, each of the rows of first sensing pads includes a plurality of first sensing pads coupled to each other, and each of the first sensing pads has a first opening; Multiple rows of second sensing pads are distributed in the main sensing area, each of the rows of second sensing pads includes a plurality of second sensing pads coupled to each other, and each of the second sensing pads has a the second opening; and a plurality of third sensing pads distributed in the peripheral area, each of the third sensing pads has a third opening; and A sensing control circuit, coupled to the columns of first sensing pads, the rows of second sensing pads, and the third sensing pads, for controlling the first sensing pads by the first sensing pads in a plurality of first time periods A sensing pad, the second sensing pads and the third sensing pads perform a touch sensing operation, and are used to use the third sensing pads as receiving electrodes in a plurality of second time periods. Proximity sensing operation, wherein the first periods and the second periods are set alternately in time sequence. 3. A touch panel, characterized in that, comprising: a substrate; A patterned conductive layer is disposed on one side of the substrate, the patterned conductive layer has a main sensing area and a peripheral area, and includes: Multiple rows of first sensing pads are distributed in the main sensing area, each of the rows of first sensing pads includes a plurality of first sensing pads coupled to each other, and each of the first sensing pads has a first opening; Multiple rows of second sensing pads are distributed in the main sensing area, each of the rows of second sensing pads includes a plurality of second sensing pads coupled to each other, and each of the second sensing pads has a the second opening; and a plurality of third sensing pads distributed in the peripheral area, each of the third sensing pads has a third opening; and a sensing control circuit, coupled to the columns of first sensing pads, the rows of second sensing pads and the third sensing pads, for when the touch panel is in a first operation mode, The touch sensing operation is performed by the first sensing pads and the second sensing pads, and the proximity sensing operation is performed by using the third sensing pads as receiving electrodes, and the sensing control circuit is additionally When the touch panel is in a second operation mode, a touch sensing operation is performed through a first part of the first sensing pads and the second sensing pads, and the first part of the second sensing pads A sensing pad and/or a second portion of the second sensing pads and the third sensing pads are used as receiving electrodes for proximity sensing operation. 4. The touch panel according to claim 2 or 3, further comprising an emitter electrode layer, wherein the substrate is formed between the emitter electrode layer and the patterned conductive layer, and the sensing control circuit Proximity sensing is performed through the emitter electrode layer and the third sensing pads. 5. The touch panel as claimed in claim 4, wherein the emitter electrode layer has a plurality of fourth openings. 6. The touch panel according to claim 1, 2 or 3, wherein the patterned conductive layer further comprises a plurality of first floating electrodes formed in the first openings and the second openings. 7. The touch panel according to claim 1, 2 or 3, wherein the patterned conductive layer further comprises a plurality of second floating electrodes formed in the third openings. 8. The touch panel according to claim 1, 2 or 3, wherein the patterned conductive layer further comprises a plurality of ground electrodes formed in the third openings. 9. A touch panel, characterized in that it comprises: a substrate; A patterned conductive layer is disposed on one side of the substrate, the patterned conductive layer has a main sensing area and a peripheral area, and includes: Multiple columns of first sensing pads are distributed in the main sensing area and the peripheral area, each of the columns of first sensing pads includes a plurality of first sensing pads coupled to each other, each of the first sensing pads The measuring pad has a first opening; Multiple rows of second sensing pads are distributed in the main sensing area and the peripheral area, each of the rows of second sensing pads includes a plurality of second sensing pads coupled to each other, each of the second sensing pads the test pad has a second opening; and A plurality of receiving electrodes are selectively distributed in the main sensing area and/or in some or all of the first openings and/or second openings in the peripheral area, wherein the receiving electrodes, the rows of first sensing The measuring pad and the rows of second sensing pads are electrically separated; and A sensing control circuit, coupled to the columns of first sensing pads, the rows of second sensing pads, and the receiving electrodes, for sensing The pad performs touch sensing operation, and performs proximity sensing operation through the receiving electrodes. 10. The touch panel according to claim 9, further comprising an emitter electrode layer, wherein the substrate is formed between the emitter electrode layer and the patterned conductive layer, and the sensing control circuit is controlled by The transmitting electrode layer and the receiving electrodes perform proximity sensing operation. 11. The touch panel according to claim 10, wherein the emitter electrode layer has a plurality of fourth openings. 12. The touch panel according to claim 9, wherein the patterned conductive layer further comprises a plurality of floating electrodes formed in the first openings and/or part of the main sensing region. These second openings. 13. The touch panel according to claim 9, wherein the patterned conductive layer further comprises a plurality of ground electrodes formed in the first openings and the second openings in the peripheral region. 14. The touch panel according to claim 9, wherein the receiving electrodes are distributed in the first openings and the second openings in the peripheral area, and the patterned conductive layer further comprises multiple A transmitting electrode is formed in the first opening and/or the second opening of a first part in the main sensing area, and is connected with the receiving electrodes, the rows of first sensing pads and the rows of second sensing pads. Measuring pads are electrically separated. 15. The touch panel according to claim 14, wherein the patterned conductive layer further comprises a plurality of floating electrodes formed in the first opening and/or the first opening of a second part in the main sensing region. Two are opening their mouths. 16. The touch panel according to claim 9, wherein the receiving electrodes are arranged into multiple columns of receiving electrodes and multiple rows of receiving electrodes, and the patterned conductive layer further comprises multiple columns of transmitting electrodes and multiple rows of transmitting electrodes , the columns of transmitting electrodes and the columns of receiving electrodes are arranged alternately, the rows of transmitting electrodes and the rows of receiving electrodes are arranged alternately, and each of the columns of transmitting electrodes and the rows of transmitting electrodes includes a plurality of transmitting electrodes, each One of the emitter electrodes is disposed in one of the first openings and/or one of the second openings. 17. The touch panel according to claim 9, wherein the sensing control circuit is used to perform touch control via the first sensing pads and the second sensing pads in a plurality of first time periods. control sensing operation, and to perform short-distance sensing operation using the first sensing pads and the second sensing pads as emitting electrodes in a plurality of second time periods, wherein the first time periods and the The second periods are set alternately in time series. 18. The touch panel according to claim 9, wherein the patterned conductive layer further comprises a plurality of floating electrodes formed in the first openings and/or part of the main sensing region. These second openings. 19. The touch panel according to claim 9, wherein the patterned conductive layer further comprises a plurality of ground electrodes formed in the first openings and the second openings in the peripheral region. 20. A touch panel, characterized in that it comprises: a substrate; A patterned conductive layer is disposed on one side of the substrate, the patterned conductive layer has a main sensing area and a peripheral area, and includes: Multiple columns of first sensing pads are distributed in the main sensing area and the peripheral area, each of the columns of first sensing pads includes a plurality of first sensing pads coupled to each other, each of the first sensing pads the test pad has a first opening; and Multiple rows of second sensing pads are distributed in the main sensing area and the peripheral area, each of the rows of second sensing pads includes a plurality of second sensing pads coupled to each other, each of the second sensing pads the test pad has a second opening; and A sensing control circuit, coupled to the columns of first sensing pads and the rows of second sensing pads, for controlling the first sensing pads and the second sensing pads in a plurality of first time periods. The two sensing pads perform a touch sensing operation, and are used to use part or all of the rows of first sensing pads and/or the rows of second sensing pads as receiving electrodes in a plurality of second time periods. Proximity sensing operation, wherein the first periods and the second periods are set alternately in time sequence. 21. The touch panel according to claim 20, characterized in that, the patterned conductive layer further comprises a plurality of emitter electrodes formed in all or part of the first sensing region and/or the peripheral region. The opening and/or the second opening are electrically separated from the rows of first sensing pads and the rows of second sensing pads. 22. The touch panel according to claim 20, wherein the patterned conductive layer further comprises a plurality of ground electrodes formed in the first opening and/or the second opening in the peripheral region. 23. The touch panel according to claim 20, wherein the patterned conductive layer further comprises a plurality of receiving electrodes, a first opening formed in the main sensing area and/or a part of the peripheral area and /or in the second opening.