Touch control circuit and touch control device

Abstract

The embodiment of the present application relates to the touch control technical field, discloses a kind of touch circuit and touch device, above-mentioned touch circuit includes first ITO pattern area, second ITO pattern area and touch chip;First ITO pattern area includes the array arrangement m column first drive electrode pattern and n row first sensing electrode pattern, m column first drive electrode pattern is connected with touch chip by m drive channel, and n row first sensing electrode pattern is connected with touch chip by n sensing channel;Second ITO pattern area includes the array arrangement m column second drive electrode pattern and r row second sensing electrode pattern, the column spacing between two adjacent second drive electrode patterns corresponds with the position of preset virtual button, m column second drive electrode pattern is connected with m column first drive electrode pattern by metal wire, and r row second sensing electrode pattern is connected with touch chip by r sensing channel, and the touch circuit is very low in processing cost, with very strong universality.

Description

Technical Field

[0001] This application relates to the field of touch technology, and in particular to a touch circuit and a touch device. Background Technology

[0002] Touch technology is a widely used interactive technology between people, between people and machines, and even between machines. It is one of the core technologies of the digital age. With the rapid innovation and development of touch technology, products equipped with touch technology are increasingly being integrated into various industries. Display touch areas (such as touch screens and touch panels) are one of the most successful applications of touch technology. Mutual capacitance touch circuits are a commonly used touch technology. The driving channels and sensing channels are arranged in the form of etched indium tin oxide (ITO) patterns covering the corresponding under-screen area of ​​the display. These driving channels and sensing channels are then connected to the touch chip through flexible printed circuit (FPC) cables. The touch chip locates the coordinate position of the touch point based on the change in capacitance value, thereby realizing touch interaction.

[0003] With the widespread application of touch technology in consumer electronics, medical devices, automobiles, public facilities, entertainment, and industrial equipment, a simple display touch area can no longer meet people's touch interaction needs. People need to set up more touch-sensitive virtual button areas outside the display touch area to meet touch needs.

[0004] To accommodate a larger touch-sensing area, the ITO pattern area can be extended downwards by etching a certain number of ITO patterns. However, the actual shape of the virtual button area required by the product is irregular and often exceeds the limits of the display touch area. The downward-extended ITO patterns cannot cover the virtual button area and are not universally applicable. Another method is to design a special ITO pattern below the virtual button area based on the key function of the touch chip. However, this method requires the touch chip to support the key function and will occupy a lot of channel resources, making it too costly. Summary of the Invention

[0005] The purpose of this application is to provide a touch circuit and a touch device that can meet the touch requirements of virtual button areas with different layout shapes and different numbers of virtual buttons. It occupies few channel resources, has very low processing costs, and has strong versatility.

[0006] To address the aforementioned technical problems, embodiments of this application provide a touch circuit comprising a first ITO pattern area, a second ITO pattern area, and a touch chip. The first ITO pattern area comprises an array of m columns of first driving electrode patterns and n rows of first sensing electrode patterns. The m columns of first driving electrode patterns are connected to the touch chip via m driving channels, and the n rows of first sensing electrode patterns are connected to the touch chip via n sensing channels. Here, m and n are integers greater than 1. The second ITO pattern area comprises an array of m columns of second driving electrode patterns and r rows of second sensing electrode patterns. The column spacing between adjacent columns of second driving electrode patterns corresponds to the position of a preset virtual button. The m columns of second driving electrode patterns are connected to the m columns of first driving electrode patterns via metal wires, and the r rows of second sensing electrode patterns are connected to the touch chip via r sensing channels. Here, r is an integer greater than 1.

[0007] An embodiment of this application also provides a touch device, the touch device including a display touch area, a cover plate and the aforementioned touch circuit, the cover plate being provided with a virtual button area, the touch circuit including a first ITO pattern area, a second ITO pattern area and a touch chip; the first ITO pattern area corresponds to the display touch area and is disposed below the display touch area; the second ITO pattern area corresponds to the virtual button area and is disposed below the virtual button area on the cover plate.

[0008] The embodiments of this application provide a touch circuit and a touch device. The touch circuit includes a touch chip, a first ITO pattern area, and a second ITO pattern area. The first ITO pattern area includes an array of m columns of first driving electrode patterns and n rows of first sensing electrode patterns. The m columns of first driving electrode patterns are connected to the touch chip through m driving channels, and the n rows of first sensing electrode patterns are connected to the touch chip through n sensing channels. The second ITO pattern area includes an array of m columns of second driving electrode patterns and r rows of second sensing electrode patterns. The column spacing between two adjacent columns of second driving electrode patterns corresponds to the position of a preset virtual button. The m columns of second driving electrode patterns are respectively connected to the m columns of first driving electrode patterns through metal wires, and the r rows of second sensing electrode patterns are connected to the touch chip through r sensing channels. Considering that touch circuits in the industry need to be adapted... For larger touch sensing areas, the ITO pattern area would extend downwards. However, the extended ITO pattern cannot cover the virtual button area. If a special ITO pattern is set using the Key channel, the touch chip supporting the Key function must be replaced, which is too costly. In this application, the embodiments are designed with a second ITO pattern area to meet the touch requirements of virtual buttons. The column spacing of the driving electrode pattern of the second ITO pattern area is determined according to the preset position of the virtual button. It can meet the touch requirements of virtual button areas with different layout shapes and different numbers of virtual buttons, and has strong versatility. The driving electrode pattern of the second ITO pattern area is connected to the driving electrode pattern of the first ITO pattern area through a metal wire. That is, the two use the same driving channel, do not occupy additional driving channel resources, and do not require the touch chip to support the Key function, resulting in very low processing costs.

[0009] In addition, each of the first driving electrode patterns is adjacent to at least two of the first sensing electrode patterns, and each of the second driving electrode patterns is adjacent to at least two of the second sensing electrode patterns. This application uses a mutual capacitance touch technology. Whether it is the first ITO pattern area or the second ITO pattern area, each driving electrode pattern needs to be adjacent to at least two sensing electrode patterns, so as to ensure that the etched ITO patterns form the largest touch area and reduce the processing cost of the touch circuit.

[0010] In addition, the number of second driving electrode patterns in each column is r+1, the number of second sensing electrode patterns in each row is at least m+1, and the number of second sensing electrode patterns in each row is at most 2m. In the second ITO pattern area of ​​this application, the spacing between two adjacent columns of second driving electrode patterns corresponds to the position of the preset virtual button, and is not simply arranged adjacently. When the spacing between two adjacent columns of second driving electrode patterns is relatively small, sharing some second sensing electrode patterns can ensure that each second driving electrode pattern is adjacent to at least two second sensing electrode patterns. However, when the spacing between two adjacent columns of second driving electrode patterns is relatively large, the second sensing electrode patterns cannot be shared, and the number of second sensing electrode patterns must be increased. At most 2m×r second sensing electrode patterns can be used to ensure that each second driving electrode pattern is adjacent to at least two second sensing electrode patterns.

[0011] Furthermore, the first ITO pattern area corresponds to a preset display touch area, and the area of ​​the first ITO pattern area is the same as the area of ​​the display touch area. The m columns of first driving electrode patterns and the n rows of first sensing electrode patterns arranged in the array cover the first ITO pattern area. The column spacing between each pair of adjacent first driving electrode patterns is the same, and the row spacing between each pair of adjacent first sensing electrode patterns is the same. The first ITO pattern area corresponds to the display touch area, and the entire display touch area is an effective touch area. Therefore, the m columns of first driving electrode patterns and the n rows of first sensing electrode patterns arranged in the array need to cover the first ITO pattern area, that is, to cover the entire display touch area in order to achieve the touch requirements. The column spacing between each pair of first driving electrode patterns is the same, and the row spacing between each pair of first sensing electrode patterns is the same, which can ensure that each position of the display touch area has a good touch effect and touch sensitivity.

[0012] In addition, the row spacing between each pair of adjacent rows of the second sensing electrode patterns is the same, and the row spacing between each pair of adjacent rows of the second sensing electrode patterns is equal to the row spacing between each pair of adjacent rows of the first sensing electrode patterns. In the second ITO pattern area, although the column spacing between two adjacent columns of the second driving electrode patterns corresponds to the position of the preset virtual button, the row spacing between each pair of adjacent rows of the second sensing electrode patterns is the same as the row spacing between each pair of adjacent rows of the first sensing electrode patterns in the first ITO pattern area. This ensures that the virtual button area and the display touch area have the same good touch effect and touch sensitivity.

[0013] In addition, the number of first driving electrode patterns in each column is n+1, and the number of first sensing electrode patterns in each row is m+1, thereby ensuring that the first driving electrode patterns and the first sensing electrode patterns cover the entire display touch area.

[0014] In addition, the number of second ITO pattern areas is t, where t is an integer greater than 1. The m columns of second driving electrode patterns of the first second ITO pattern area are respectively connected to the m columns of first driving electrode patterns of the first ITO pattern area through metal lines. The m columns of second driving electrode patterns of the i-th second ITO pattern area are respectively connected to the m columns of second driving electrode patterns of the (i-1)-th second ITO pattern area through metal lines, where i is an integer greater than 1 and less than or equal to t. Considering that the virtual buttons actually needed by the product may be distributed in different areas around the display touch area, it is impossible to cover these virtual buttons with only one second ITO pattern area. Therefore, this application even has multiple second ITO pattern areas, one of which is connected to the first ITO pattern area through a metal line, and the other second ITO pattern areas are connected to the previous second ITO pattern areas through metal lines. The entire touch circuit still only occupies m driving channels of the touch chip, further improving the applicability and universality of the touch circuit and further reducing the processing cost. Attached Figure Description

[0015] One or more embodiments are illustrated by way of example with reference to the accompanying drawings, and these illustrative descriptions do not constitute a limitation on the embodiments.

[0016] Figure 1 This is a design schematic diagram of a mutual-capacitance touch technology;

[0017] Figure 2 This is a design schematic diagram of another type of inter-capacitive touch technology;

[0018] Figure 3 This is a design schematic diagram of yet another type of interoperable touch technology;

[0019] Figure 4 This is a schematic diagram of a touch circuit provided in one embodiment of this application. Figure 1 ;

[0020] Figure 5 This is a schematic diagram of a first ITO pattern area and a second ITO pattern area provided in one embodiment of this application;

[0021] Figure 6 This is a schematic diagram of another first ITO pattern area and a second ITO pattern area provided in one embodiment of this application;

[0022] Figure 7 This is a schematic diagram of a touch circuit provided in one embodiment of this application. Figure 2 ;

[0023] Figure 8This is a schematic diagram of a first ITO pattern area and t second ITO pattern areas provided in one embodiment of this application;

[0024] Figure 9 This is a top view of a touch device provided in one embodiment of this application. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the various embodiments of this application will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this application to help readers better understand this application. However, the technical solutions claimed in this application can be implemented even without these technical details and various changes and modifications based on the following embodiments. The division of the various embodiments below is for the convenience of description and should not constitute any limitation on the specific implementation of this application. The various embodiments can be combined with and referenced by each other without contradiction.

[0026] For displays using capacitive touch technology, the touch area needs to be covered with an ITO pattern area. Figure 1 This illustrates a design for a mutual capacitance touch technology, where an ITO patterned area contains ITO patterns serving as driving electrodes and ITO patterns serving as sensing electrodes. Figure 1 The white diamond pattern in the image is the ITO pattern used as the driving electrode, and the diamond pattern filled with dots is the ITO pattern used as the sensing electrode. The ITO pattern used as the driving electrode is connected to the touch chip through a driving channel, and the ITO pattern used as the sensing electrode is connected to the touch chip through a sensing channel. Figure 1 Solid lines with direction represent drive channels, while dashed lines with direction represent sensing channels.

[0027] However, with the development of touch technology, a simple display touch area can no longer meet people's touch interaction needs. People need to set up more touch-sensitive virtual button areas outside the display touch area to satisfy these needs. To accommodate a larger touch-sensitive area, the industry typically chooses to extend the ITO pattern area downwards, that is, to etch a certain number of ITO patterns, such as... Figure 2 As shown, in order to accommodate the newly added virtual button area, the technicians lengthened the original ITO pattern area. However, the width of the extended ITO pattern area is equal to that of the original ITO pattern area. The shape of the newly added virtual button area is irregular and often exceeds the width of the display touch area. If the width of the newly added virtual button area exceeds the width of the display touch area, the extended ITO pattern area will not be able to cover the virtual button area, and effective touch control will not be achieved. Therefore, this solution is not universally applicable.

[0028] Another approach is to design special ITO patterns for the virtual button area based on the key function of the touch chip, such as... Figure 3 As shown, each virtual button corresponds to a special ITO pattern. These special ITO patterns are connected to the touch chip through a driving channel and to the touch chip through a key channel. This requires the touch chip to support the key function and will occupy a lot of channel resources. If the position of the virtual button is changed, the special ITO pattern must be redesigned. The cost of replacing the touch chip and the processing cost are very high.

[0029] To address the issues of the aforementioned touch circuits, such as lack of universality, excessive channel resource usage, and high processing costs, one embodiment of this application provides a touch circuit. The implementation details of the touch circuit in this embodiment are described below. The following content is only for ease of understanding and is not essential for implementing this solution.

[0030] The touch circuit in this embodiment can be as follows: Figure 4 As shown, the touch circuit includes a first ITO pattern area 11, a second ITO pattern area 12, and a touch chip 13.

[0031] The first ITO pattern area 11 includes an array of m columns of first driving electrode patterns and n rows of first sensing electrode patterns, where m and n are both integers greater than 1. The m columns of first driving electrode patterns are connected to the touch chip 13 through m driving channels. Figure 4 The solid line 14 in the center represents the driving channel. The n-row first sensing electrode pattern is connected to the touch chip 13 through n sensing channels. Figure 4 The dashed line 15 in the center is used to indicate the sensing channel.

[0032] Specifically, when a user's finger touches the display touch area, it affects the coupling between the driving electrode pattern and the sensing electrode pattern near the touch point, thereby changing the capacitance between the two electrode patterns. The touch chip sends a driving signal to the driving electrode pattern through the driving channel and receives a sensing signal from the sensing electrode pattern through the sensing channel, thereby calculating the coordinates of the touch point based on the change in the capacitance value of the display touch area.

[0033] The second ITO pattern area 12 includes m columns of second driving electrode patterns and r rows of second sensing electrode patterns arranged in an array, where r is an integer greater than 1. The column spacing between two adjacent columns of second driving electrode patterns corresponds to the position of a preset virtual button. The m columns of second driving electrode patterns are respectively connected to the m columns of first driving electrode patterns in the first ITO pattern area 11 through metal wires. Figure 4 The dotted lines 16 with direction are used to represent the aforementioned metal lines. The r-row second sensing electrode pattern is connected to the touch chip 13 through r sensing channels. Figure 4 The dashed line 17 in the center is used to represent the sensing channel connecting the second sensing electrode pattern and the touch chip 13.

[0034] In the specific implementation, the first ITO pattern area is adapted to the touch requirements of the display touch area, while the second ITO pattern area is adapted to the touch requirements of the virtual button area. The column spacing of the driving electrode pattern of the second ITO pattern area is determined according to the preset position of the virtual button, so it can meet the touch requirements of virtual button areas with different arrangement shapes and different numbers of virtual buttons. At the same time, the driving electrode pattern of the second ITO pattern area is connected to the driving electrode pattern of the first ITO pattern area through metal wires. That is, the first ITO pattern area and the second ITO pattern area use the same driving channel and do not occupy additional driving channel resources.

[0035] In one example, the first driving electrode pattern, the first sensing electrode pattern, the second driving electrode pattern, and the second sensing electrode pattern are all single-layer rhomboid patterns.

[0036] In one example, the drive channel and the sensing channel are specifically in the form of FPC cables.

[0037] In this embodiment, the touch circuit includes a touch chip, a first ITO pattern area, and a second ITO pattern area. The first ITO pattern area includes an array of m columns of first driving electrode patterns and n rows of first sensing electrode patterns. The m columns of first driving electrode patterns are connected to the touch chip through m driving channels, and the n rows of first sensing electrode patterns are connected to the touch chip through n sensing channels. The second ITO pattern area includes an array of m columns of second driving electrode patterns and r rows of second sensing electrode patterns. The column spacing between two adjacent columns of second driving electrode patterns corresponds to the position of a preset virtual button. The m columns of second driving electrode patterns are connected to the m columns of first driving electrode patterns through metal wires, and the r rows of second sensing electrode patterns are connected to the touch chip through r sensing channels. Considering that touch circuits in the industry are designed to accommodate larger touch sensing areas... The domain will choose to extend the ITO pattern area downwards, but the extended ITO pattern cannot cover the virtual button area. If a special ITO pattern is set using the Key channel, the touch chip that supports the Key function must be replaced, which is too costly. However, the embodiments of this application have designed a second ITO pattern area to meet the touch requirements of virtual buttons. The column spacing of the driving electrode pattern of the second ITO pattern area is determined according to the preset position of the virtual button, which can meet the touch requirements of virtual button areas with different layout shapes and different numbers of virtual buttons, and has strong universality. The driving electrode pattern of the second ITO pattern area is connected to the driving electrode pattern of the first ITO pattern area through a metal wire, that is, the two use the same driving channel, without occupying additional driving channel resources, and without requiring the touch chip to support the Key function, resulting in very low processing costs.

[0038] In one embodiment, each first driving electrode pattern in the first ITO pattern region is adjacent to at least two first sensing electrode patterns, and each second driving electrode pattern in the second ITO pattern region is adjacent to at least two second sensing electrode patterns. The first ITO pattern region and the second ITO pattern region can be as follows: Figure 5 As shown, whether it is the first ITO pattern area or the second ITO pattern area, each driving electrode pattern needs to be adjacent to at least two sensing electrode patterns, so as to ensure that the etched ITO patterns form the largest touch area and reduce the processing cost of the touch circuit.

[0039] In the specific implementation, the first ITO pattern area corresponds to a preset display touch area, and the area of ​​the first ITO pattern area is the same as the area of ​​the display touch area. The first ITO pattern area is filled with m columns of first driving electrode patterns and n rows of first sensing electrode patterns arranged in an array. The white rhombuses in the first ITO pattern area represent the first driving electrode patterns, and the dotted rhombuses in the first ITO pattern area represent the first sensing electrode patterns. Figure 5 As shown, the column spacing between each pair of adjacent first driving electrode patterns is the same, and the row spacing between each pair of adjacent first sensing electrode patterns is the same. The first ITO pattern area corresponds to the display touch area, and the entire display touch area is an effective touch area. Therefore, the m columns of first driving electrode patterns and n rows of first sensing electrode patterns arranged in the array need to fill the first ITO pattern area, that is, fill the entire display touch area to achieve the touch requirement. The column spacing between each pair of first driving electrode patterns is the same, and the row spacing between each row of first sensing electrode patterns is the same, which can ensure that each position of the display touch area has a good touch effect and touch sensitivity.

[0040] In one example, the number of first driving electrode patterns in each column of the first ITO pattern area is n+1, and the number of first sensing electrode patterns in each row is m+1, so that the entire display touch area can be covered.

[0041] In one example, the row spacing between each pair of adjacent rows of second sensing electrode patterns in the second ITO pattern area is the same, and the row spacing between each pair of adjacent rows of second sensing electrode patterns is equal to the row spacing between each pair of adjacent rows of first sensing electrode patterns in the first ITO pattern area. In the second ITO pattern area, although the column spacing between two adjacent columns of second driving electrode patterns corresponds to the position of the preset virtual button, the row spacing between each pair of adjacent rows of second sensing electrode patterns is the same as the row spacing between each pair of adjacent rows of first sensing electrode patterns in the first ITO pattern area. This ensures that the virtual button area and the display touch area have the same good touch effect and touch sensitivity.

[0042] In one example, the number of second driving electrode patterns in each column of the second ITO pattern region is r+1, the number of second sensing electrode patterns in each row is at least m+1, and the number of second sensing electrode patterns in each row is at most 2m. Figure 5 In the second ITO pattern area shown, the column spacing between the third and fourth columns of the second driving electrode patterns is relatively close, allowing them to share the second sensing electrode pattern. However, the column spacing between the third and fourth columns of the second driving electrode patterns is relatively large, making it impossible for them to share the second sensing electrode pattern. Figure 5 The second ITO pattern area shown has 6 columns of second driving electrode patterns. Following the shared arrangement, each row requires 10 second sensing electrode patterns. Therefore, when the column spacing between adjacent columns of second driving electrode patterns is relatively close, the number of second sensing electrode patterns in each row is m+1. This is also the arrangement of the first driving electrode patterns and the first sensing electrode patterns in the first ITO pattern area. However, when the column spacing between adjacent columns of second driving electrode patterns is relatively far, for example… Figure 6 In the first and second ITO pattern areas shown, to ensure that each second driving electrode pattern is adjacent to at least two second sensing electrode patterns, the number of second sensing electrode patterns in each row needs to be 2m. Figure 6 The second ITO pattern area shown has 6 columns of second driving electrode patterns. Since the second sensing electrode patterns cannot be shared, each row of second sensing electrode patterns needs to have 12 patterns.

[0043] In one embodiment, the number of second ITO pattern regions is t, where t is an integer greater than 1. The m columns of second driving electrode patterns of the first second ITO pattern region are connected to the m columns of first driving electrode patterns of the first ITO pattern region through metal wires. The m columns of second driving electrode patterns of the i-th second ITO pattern region are connected to the m columns of second driving electrode patterns of the (i-1)-th second ITO pattern region through metal wires, where i is an integer greater than 1 and less than or equal to t.

[0044] In one example, the touch circuit provided in this embodiment can be as follows: Figure 7 As shown, the touch circuit includes a first ITO pattern area 21, a second ITO pattern area A 221, a second ITO pattern area B 222, and a touch chip 23. The second ITO pattern area A 221 is located on the south side of the first ITO pattern area 21, and the second ITO pattern area B 222 is located on the left side of the first ITO pattern area 21.

[0045] The m columns of first driving electrode patterns in the first ITO pattern area 21 are connected to the touch chip 23 through m driving channels. Figure 7The solid line 24 in the center represents the driving channel. The n-row first sensing electrode pattern is connected to the touch chip 23 through n sensing channels. Figure 7 The dashed line 25 in the center is used to indicate the sensing channel.

[0046] The m columns of second driving electrode patterns in the second ITO pattern area 221 are respectively connected to the m columns of first driving electrode patterns in the first ITO pattern area 21 via metal wires. Figure 7 The dotted line 26 with direction is used to represent the metal line, and the r-row second sensing electrode pattern is connected to the touch chip 23 through r sensing channels. Figure 7 The dashed line 27 in the middle is used to indicate the connection to the sensing channel.

[0047] The m columns of second driving electrode patterns in the second ITO pattern area 222 are respectively connected to the m columns of second driving electrode patterns in the second ITO pattern area 221 via metal wires. Figure 7 The dotted line 28 with direction is used to represent the metal line, and the r-row second sensing electrode pattern is connected to the touch chip 23 through r sensing channels. Figure 7 The dashed line 29 in the middle is used to represent the sensing channel.

[0048] In one example, the second sensing electrode pattern of the second ITO pattern area 222 can also be connected to the first sensing electrode pattern of the first ITO pattern area 21 via a metal wire, sharing the sensing channel.

[0049] In one example, the connection between the first ITO pattern region and t second ITO pattern regions can be as follows: Figure 8 As shown, Figure 8 Two second ITO pattern regions are shown. The first ITO pattern region and the two second ITO pattern regions share a driving channel. The second ITO pattern region B only uses two driving channels. The second sensing electrode pattern is side by side with the first sensing electrode pattern of the first ITO pattern region. Therefore, it can be connected to the first sensing electrode pattern through a metal wire, that is, it shares the sensing channel with the first ITO pattern region.

[0050] In this embodiment, considering that the virtual buttons actually needed by the product may be distributed in different areas around the display touch area, a single second ITO pattern area cannot cover these virtual buttons. Therefore, this application uses multiple second ITO pattern areas, one of which is connected to the first ITO pattern area through a metal wire, and the other second ITO pattern areas are connected to the previous second ITO pattern area through metal wires. The entire touch circuit still only occupies m driving channels of the touch chip, further improving the applicability and universality of the touch circuit and further reducing the processing cost.

[0051] It is worth mentioning that, in order to highlight the innovative aspects of this application, no units or components that are not closely related to solving the technical problems proposed in this application have been introduced in the above embodiments. However, this does not mean that there are no other units or components in the above embodiments.

[0052] Another embodiment of this application provides a touch device. The implementation details of the touch device of this embodiment are described in detail below. The following implementation details are only provided for ease of understanding and are not necessary for implementing this solution. The touch device of this embodiment includes a display touch area, a cover plate, and a touch circuit. A virtual button area is provided on the cover plate. The touch circuit includes a first ITO pattern area, a second ITO pattern area, and a touch chip. The first ITO pattern area in the touch circuit corresponds to the display touch area and is located below the display touch area. The second ITO pattern area in the touch circuit corresponds to the virtual button area and is located below the virtual button area on the cover plate.

[0053] In one example, the top view of a touch device could be as follows: Figure 9 As shown, the cover plate 32 is a complete piece, and the display touch area 31 is embedded in the cover plate 32. The cover plate 32 is provided with a virtual button area 321, which is located on the south side of the display touch area 31.

[0054] In one example, there are t second ITO pattern areas and t virtual button areas on the cover plate, where t is an integer greater than 1. Each second ITO pattern area corresponds to a virtual button area. Different second ITO pattern areas correspond to different virtual button areas. Each second ITO pattern area is located below the corresponding virtual button area on the cover plate.

[0055] It is worth mentioning that, in order to highlight the innovative aspects of this application, no units or components that are not closely related to solving the technical problems proposed in this application have been introduced in the above embodiments. However, this does not mean that there are no other units or components in the above embodiments.

[0056] Those skilled in the art will understand that the above embodiments are specific embodiments for implementing this application, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of this application.

Claims

1. A touch circuit, characterized in that, The touch circuit includes a first indium tin oxide (ITO) pattern area, a second ITO pattern area, and a touch chip. The first indium tin oxide (ITO) pattern area includes an array of m columns of first driving electrode patterns and n rows of first sensing electrode patterns. The m columns of first driving electrode patterns are connected to the touch chip through m driving channels, and the n rows of first sensing electrode patterns are connected to the touch chip through n sensing channels; wherein, m and n are integers greater than 1. The second ITO pattern area includes an array of m columns of second driving electrode patterns and r rows of second sensing electrode patterns. The column spacing between two adjacent columns of second driving electrode patterns corresponds to the position of a preset virtual button. The m columns of second driving electrode patterns are respectively connected to the m columns of first driving electrode patterns through metal wires. The r rows of second sensing electrode patterns are connected to the touch chip through r sensing channels. Wherein, r is an integer greater than 1. Each of the first driving electrode patterns is adjacent to at least two of the first sensing electrode patterns, and each of the second driving electrode patterns is adjacent to at least two of the second sensing electrode patterns; The first indium tin oxide (ITO) pattern area corresponds to a preset display touch area. The area of ​​the first indium tin oxide (ITO) pattern area is the same as the area of ​​the display touch area. The m columns of first driving electrode patterns and the n rows of first sensing electrode patterns arranged in the array cover the first indium tin oxide (ITO) pattern area. The column spacing between each pair of adjacent first driving electrode patterns is the same, and the row spacing between each pair of adjacent first sensing electrode patterns is the same.

2. The touch circuit according to claim 1, characterized in that, The number of second driving electrode patterns in each column is r+1, the number of second sensing electrode patterns in each row is at least m+1, and the number of second sensing electrode patterns in each row is at most 2m.

3. The touch circuit according to claim 1, characterized in that, The row spacing between each pair of adjacent rows of the second sensing electrode pattern is the same, and the row spacing between each pair of adjacent rows of the second sensing electrode pattern is equal to the row spacing between each pair of adjacent rows of the first sensing electrode pattern.

4. The touch circuit according to claim 1, characterized in that, The number of first driving electrode patterns in each column is n+1, and the number of first sensing electrode patterns in each row is m+1.

5. The touch circuit according to any one of claims 1 to 4, characterized in that, The number of the second ITO pattern regions is t, where t is an integer greater than 1. The m columns of the second driving electrode patterns of the first second ITO pattern region are respectively connected to the m columns of the first driving electrode patterns of the first indium tin oxide ITO pattern region through metal lines. The m columns of the second driving electrode patterns of the i-th second ITO pattern region are respectively connected to the m columns of the second driving electrode patterns of the (i-1)-th second ITO pattern region through metal lines, where i is an integer greater than 1 and less than or equal to t.

6. The touch circuit according to any one of claims 1 to 4, characterized in that, The first driving electrode pattern, the first sensing electrode pattern, the second driving electrode pattern, and the second sensing electrode pattern are all single-layer rhomboid patterns.

7. A touch device, characterized in that, The touch device includes a display touch area, a cover plate, and a touch circuit as described in any one of claims 1 to 6. The cover plate is provided with a virtual button area, and the touch circuit includes a first indium tin oxide (ITO) pattern area, a second ITO pattern area, and a touch chip. The first indium tin oxide (ITO) pattern area corresponds to the display touch area, and the first indium tin oxide (ITO) pattern area is disposed below the display touch area; The second ITO pattern area corresponds to the virtual button area, and the second ITO pattern area is located below the virtual button area of ​​the cover plate.

8. The touch device according to claim 7, characterized in that, The number of the second ITO pattern area is t, and the number of the virtual button areas set on the cover plate is also t, where t is an integer greater than 1. Each second ITO pattern area corresponds to one virtual button area. Different second ITO pattern areas correspond to different virtual button areas, and each second ITO pattern area is respectively set below the corresponding virtual button area.

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