A detection device

Abstract

An embodiment of the present application discloses a detection device, comprising: a first detection electrode, arranged on a first reference plane, having a first electrode pattern, the first electrode pattern including at least portions of electrode lines extending along a first direction and a second direction, wherein the first direction and the second direction do not satisfy the same condition nor opposite conditions; a second detection electrode, arranged on a second reference plane, having a second electrode pattern, the second electrode pattern including at least portions of electrode lines extending along a third direction and a fourth direction, wherein the third direction and the fourth direction do not satisfy the same condition nor opposite conditions; wherein the first reference plane and the second reference plane satisfy a parallel condition, and the capacitance between the first detection electrode and the second detection electrode can detect a conductor that is in contact with or approaching the detection device.

Description

Technical Field

[0001] The present application relates to the field of touch detection technology, and in particular to a detection device. Background Art

[0002] With the advancement of electronic technology, electronic devices are integrating more and more functions and are becoming increasingly widely used. They have gradually become indispensable electronic tools for people's daily work and life. Recent research indicates that touch detection technology can be used to detect the surface conductors of electronic devices, thereby improving the convenience of electronic devices and enhancing the user experience. Therefore, how to achieve surface conductor detection of electronic devices has become a hot topic for those skilled in the art. Summary of the Invention

[0003] To solve the above technical problems, embodiments of the present application provide a detection device and an electronic device including the detection device, so as to realize conductor detection on the surface of the electronic device.

[0004] To solve the above problems, the embodiments of the present application provide the following technical solutions:

[0005] A detection device, comprising:

[0006] A first detection electrode, disposed on the first reference surface, having a first electrode pattern, wherein the first electrode pattern includes at least a portion of an electrode line extending along a first direction and a second direction, wherein the first direction and the second direction do not satisfy the same condition or opposite conditions;

[0007] The second detection electrode is provided on the second reference surface and has a second electrode pattern, wherein the second electrode pattern includes at least electrode line portions extending along a third direction and a fourth direction, wherein the third direction and the fourth direction do not satisfy the same condition or the opposite condition.

[0008] The first reference plane and the second reference plane meet a parallel condition, and the capacitance between the first detection electrode and the second detection electrode can detect a conductor that is in contact with or close to the detection device.

[0009] Optionally, the first reference plane and the second reference plane are not in the same plane; the first electrode pattern is a centrally symmetrical pattern, and the second electrode pattern is a centrally symmetrical pattern.

[0010] Optionally, the first electrode pattern includes at least one first electrode line portion extending along the first direction and at least one second electrode line portion extending along the second direction, and the first electrode line portion is connected to the second electrode line portion;

[0011] The second electrode pattern includes at least one third electrode line portion extending along a third direction and at least one fourth electrode line portion extending along a fourth direction, wherein the third electrode line portion is connected to the fourth electrode line portion;

[0012] In the fifth direction, the first electrode line partially overlaps with the fourth electrode line partially, the second electrode line partially overlaps with the third electrode line partially, and the fifth direction satisfies a perpendicular condition to the first reference plane.

[0013] Optionally, the angle between the first direction and the second direction is greater than 0° and less than 90°; the angle between the third direction and the fourth direction is greater than 0° and less than 90°.

[0014] Optionally, the first electrode pattern and the second electrode pattern are different, the first electrode pattern includes a first electrode sub-pattern and a second electrode sub-pattern, the first electrode sub-pattern and the second electrode sub-pattern are centrally symmetric about a symmetry center of the first electrode pattern, and the first electrode sub-pattern includes two first electrode line portions extending along the first direction and two second electrode line portions extending along the second direction;

[0015] The detection device has a detection area, and the first detection electrode further includes: a first connecting line portion connecting a first end of the first electrode sub-pattern and a first end of the second electrode sub-pattern at a boundary of the detection area, and a second connecting line portion connecting a second end of the first electrode sub-pattern and a second end of the second electrode sub-pattern at the boundary of the detection area, wherein the first connecting line portion and the second connecting line portion are centrally symmetric about a symmetry center of the first electrode pattern;

[0016] The second electrode pattern includes at least two third electrode line portions extending along the third direction and two fourth electrode line portions extending along the fourth direction, two adjacent third electrode line portions are connected by one fourth electrode line portion, and two adjacent fourth electrode line portions are connected by one third electrode line portion;

[0017] The first electrode pattern includes: a first graphic area and a second graphic area parallel to each other in the first direction, and a third graphic area connecting the first graphic area and the second graphic area in the first direction; within the first reference plane, a partial projection of the third electrode line is located within the graphic area of the first electrode pattern and partially extends out of the graphic area of the first electrode pattern; and a partial projection of the fourth electrode line is located within the graphic area of the first electrode pattern;

[0018] In the first reference plane, the distances between the projection of the local portion of the fourth electrode line located within the first graphic area and the two local portions of the second electrode lines located on both sides thereof are equal, the distances between the projection of the local portion of the fourth electrode line located within the second graphic area and the two local portions of the second electrode lines located on both sides thereof are equal, and the distances between the projection of the local portion of the third electrode line located within the third graphic area and the two local portions of the first electrode lines located on both sides thereof are equal;

[0019] Within the first reference plane, the distances from both ends of the projection of the local portion of the fourth electrode line located within the first graphic area to the two local portions of the first electrode line located on both sides thereof are equal, and the distances from both ends of the projection of the local portion of the fourth electrode line located within the second graphic area to the two local portions of the first electrode line located on both sides thereof are equal.

[0020] Optionally, the second electrode pattern includes a first third electrode line portion, a second third electrode line portion, and a third third electrode line portion that are parallel to each other, and the second third electrode line portion is located between the first third electrode line portion and the third third electrode line portion;

[0021] The second detection electrode further includes: a third connecting line portion connecting adjacent first third electrode line portions and second third electrode line portions at a boundary of the detection area, and a fourth connecting line portion connecting the second third electrode line portion and the third third electrode line portion at the boundary of the detection area;

[0022] The first connecting line portion, the second connecting line portion, the third connecting line portion, and the fourth connecting line portion have the same length;

[0023] The first detection electrode also includes: a fifth connecting line part connecting the first preset position of the first electrode sub-pattern and the second connecting line part, and a sixth connecting line part connecting the second preset position of the second electrode sub-pattern and the first connecting line part, the first preset position is different from the end position of the first electrode sub-pattern, and the second preset position is different from the end position of the second electrode sub-pattern.

[0024] Optionally, the first electrode pattern is rotated 90° around its symmetry center and overlaps with the second electrode pattern.

[0025] Optionally, a portion of the first electrode line and a portion of the second electrode line meet a perpendicular condition, and a portion of the third electrode line and a portion of the fourth electrode line meet a perpendicular condition.

[0026] Optionally, the first electrode pattern further includes a fifth electrode line portion extending along a sixth direction, the first electrode pattern includes three first electrode line portions, a first first electrode line portion and a second first electrode line portion are connected via the second electrode line portion, and a second first electrode line portion and a third first electrode line portion are connected via the fifth electrode line portion, wherein the sixth direction does not satisfy the same condition as the first direction, nor does it satisfy an opposite condition, and the sixth direction does not satisfy the same condition as the second direction, nor does it satisfy an opposite condition;

[0027] The second electrode pattern also includes a sixth electrode line portion extending along a seventh direction, and the second electrode pattern includes three third electrode line portions, the first third electrode line portion and the second third electrode line portion are connected to each other through the fourth electrode line portion, and the second third electrode line portion and the third third electrode line portion are connected to each other through the sixth electrode line portion, wherein the seventh direction does not satisfy the same condition or the opposite condition as the third direction, and the seventh direction does not satisfy the same condition or the opposite condition as the fourth direction.

[0028] Optionally, the first reference plane and the second reference plane are located in the same plane, the first detection electrode is a closed ring electrode, and the second detection electrode is a closed ring electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] Figure 1 A schematic diagram of a detection device provided in one embodiment of the present application;

[0031] Figure 2 A schematic diagram of a first detection electrode in a detection device provided in one embodiment of the present application;

[0032] Figure 3 A schematic diagram of a second detection electrode in a detection device provided in one embodiment of the present application;

[0033] Figure 4 A schematic diagram of a first electrode sub-pattern and a second electrode sub-pattern in a first detection electrode in a detection device provided in one embodiment of the present application;

[0034] Figure 5 A schematic diagram of a detection device provided in another embodiment of the present application;

[0035] Figure 6 A schematic diagram of different regions in a first detection electrode in a detection device provided in one embodiment of the present application;

[0036] Figure 7 A schematic diagram of a detection device provided in yet another embodiment of the present application;

[0037] Figure 8 A schematic diagram of a detection device provided in yet another embodiment of the present application;

[0038] Figure 9 A schematic diagram of a detection device provided in yet another embodiment of the present application;

[0039] Figure 10 A schematic diagram of the relative positions of a detection device and its sensing area provided in one embodiment of the present application;

[0040] Figure 11 A schematic diagram of the relative position of another detection device and its sensing area;

[0041] Figure 12 A schematic diagram of a detection device provided in yet another embodiment of the present application;

[0042] Figure 13 A schematic diagram of a detection device provided in yet another embodiment of the present application;

[0043] Figure 14 This is a schematic diagram of a detection device provided in yet another embodiment of the present application. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0045] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0046] As described in the background technology section, how to detect conductors on the surface of electronic equipment has become a research hotspot for those skilled in the art.

[0047] In view of this, an embodiment of the present application provides a detection device and an electronic device including the detection device, so as to realize conductor detection on the surface of the electronic device.

[0048] Specifically, such as Figure 1 As shown, the detection device provided in the embodiment of the present application includes:

[0049] The first detection electrode 10 is arranged on the first reference surface. Figure 2 As shown, there is a first electrode pattern 11, the first electrode pattern 11 at least including electrode lines extending in a first direction A and a second direction B. The first direction A and the second direction B do not meet the same condition or the opposite condition, so that the first electrode pattern 11 is composed of electrode lines extending in at least two directions.

[0050] The second detection electrode 20 is arranged on the second reference surface. Figure 3 As shown, there is a second electrode pattern 21, which includes at least electrode lines partially extending along a third direction C and a fourth direction D. The third direction C and the fourth direction D do not satisfy the same conditions or opposite conditions, so that the second electrode pattern 21 is composed of electrode lines partially extending along at least two directions.

[0051] It should be noted that in the embodiment of the present application, the electrode line part refers to the electrode line segment. A line segment with the same extension direction and continuous is called an electrode line part; two line segments with the same extension direction and not connected are called different electrode line parts; two line segments with different extension directions and connected at least at one end are also called different electrode line parts.

[0052] It should also be noted that in the various figures of the embodiments of the present application, the line widths of the first detection electrode and the second detection electrode are different, only for the convenience of distinguishing the first detection electrode and the second detection electrode. During specific production, the line widths of the first detection electrode and the second detection electrode may be the same or different. This application does not impose any restrictions on this, and it depends on the specific circumstances.

[0053] Specifically, in this embodiment, the first reference plane and the second reference plane meet the parallel condition, and the capacitance between the first detection electrode and the second detection electrode can detect a conductor that is in contact with or close to the detection device, thereby achieving detection of the conductor. Furthermore, under the premise of the same sensing area, the detection device provided in the embodiment of the present application has a large sensing amount and high detection accuracy. The parallel condition between the first reference plane and the second reference plane can be achieved by the first reference plane and the second reference plane being parallel, or by the first reference plane and the second reference plane being approximately parallel. This application does not limit this, and the specific situation depends on the situation.

[0054] Optionally, in one embodiment of the present application, the capacitance between the first detection electrode and the second detection electrode can detect the texture of a conductor in contact with or close to the detection device, so that the detection device can be used for fingerprint detection or some detection with texture patterns.

[0055] Based on any of the above embodiments, in one embodiment of the present application, the first reference plane and the second reference plane are not in the same plane, that is, the first detection electrode and the second detection electrode are arranged in different layers to reduce the mutual influence between the setting of the first electrode pattern and the setting of the second electrode pattern.

[0056] Specifically, in one embodiment of the present application, the detection device includes: a first substrate, optionally, the first substrate is a glass substrate; a first detection electrode located on the surface of the first substrate; a first insulating layer located on the side of the first detection electrode away from the first substrate; a second detection electrode located on the surface of the first insulating layer away from the first substrate; so that the first detection electrode and the second detection electrode are arranged in different layers, and the first insulating layer is used to achieve electrical insulation between the first detection electrode and the second detection electrode.

[0057] Based on the above embodiment, in one embodiment of the present application, the detection device further includes: a first protective layer located on a side of the second detection electrode away from the first insulating layer to protect the detection device, wherein the first protective layer is an insulating layer.

[0058] It should be noted that in the above embodiment, the positions of the first detection electrode and the second detection electrode may be interchanged, that is, the detection device includes: a first substrate; a second detection electrode located on a surface of the first substrate; a first insulating layer located on a side of the second detection electrode away from the first substrate; and a first detection electrode located on a surface of the first insulating layer away from the first substrate. This application does not impose any restrictions on this, and the specific configuration will depend on the circumstances.

[0059] Based on the above embodiments, in one embodiment of the present application, the first electrode pattern is a centrally symmetrical pattern, and the second electrode pattern is a centrally symmetrical pattern, so that when the detection device detects information of a conductor that is in contact with or close to the detection device, the induction quantities detected in different directions are more balanced.

[0060] Specifically, in one embodiment of the present application, the first electrode pattern includes at least one first electrode line portion extending along a first direction and at least one second electrode line portion extending along a second direction, and the first electrode line portion and the second electrode line portion are connected;

[0061] The second electrode pattern includes at least one third electrode line portion extending along a third direction and at least one fourth electrode line portion extending along a fourth direction, and the third electrode line portion is connected to the fourth electrode line portion.

[0062] It should be noted that in the above embodiment, in the fifth direction, the first electrode line portion and the fourth electrode line portion have an overlapping area, and the second electrode line portion and the third electrode line portion have an overlapping area, so as to utilize the capacitance between the first electrode line portion and the fourth electrode line portion, and the capacitance between the second electrode line portion and the third electrode line portion, to detect a conductor that is in contact with or approaching the detection device. The fifth direction satisfies a perpendicular condition to the first reference plane, i.e., the fifth direction is perpendicular to the first reference plane, or the fifth direction is approximately perpendicular to the first reference plane.

[0063] Optionally, based on the above embodiments, in one embodiment of the present application, the first direction and the third direction satisfy the parallel condition, and the second direction and the fourth direction satisfy the parallel condition, wherein the first direction and the third direction satisfy the parallel condition for the first direction and the third direction to be parallel, or for the first direction and the third direction to be approximately parallel, and similarly, the second direction and the fourth direction satisfy the parallel condition for the second direction and the fourth direction to be parallel, or for the second direction and the fourth direction to be approximately parallel. The present application does not impose any limitation on this, and it depends on the specific circumstances.

[0064] On the basis of any of the above embodiments, in one embodiment of the present application, the angle between the first direction and the second direction is greater than 0° and less than 90°, so as to reduce the distance between the first electrode line local area and the second electrode line local area which are at the same distance to the overlapping area of the first electrode line local area and the fourth electrode line local area, and the distance between the first electrode line local area and the second electrode line local area which are at the same distance to the overlapping area of the second electrode line local area and the third electrode line local area, thereby reducing the sensing line distance between the first detection electrode and the second detection electrode, and when the detection device detects the conductor, increasing the sensing amount detected by the first detection electrode and the second detection electrode, thereby improving the detection accuracy of the detection device.

[0065] Similarly, based on any of the above embodiments, in one embodiment of the present application, the angle between the third direction and the fourth direction is greater than 0° and less than 90°, so as to reduce the distance between the third electrode line part and the fourth electrode line part having the same distance to the overlapping area of the first electrode line part and the fourth electrode line part, and the distance between the third electrode line part and the fourth electrode line part having the same distance to the overlapping area of the second electrode line part and the third electrode line part, thereby reducing the sensing line distance between the first detection electrode and the second detection electrode, and when the detection device detects the conductor, increasing the sensing amount detected by the first detection electrode and the second detection electrode, thereby improving the detection accuracy of the detection device.

[0066] Moreover, in the above embodiment, the angle between the first direction and the second direction is greater than 0° and less than 90°, and the angle between the third direction and the fourth direction is greater than 0° and less than 90. It is also possible to increase the number of overlapping areas between the first electrode line and the fourth electrode line and the number of overlapping areas between the second electrode line and the third electrode line while keeping the detection area of the detection device fixed, thereby increasing the intersection points between the first detection electrode and the second detection electrode, and further increasing the induction nodes between the first detection electrode and the second detection electrode, increasing the induction amount of the detection device, and improving the detection accuracy of the detection device.

[0067] Based on the above embodiments, in one embodiment of the present application, the first electrode pattern and the second electrode pattern are different, so that the detection device can customize the first electrode pattern and the second electrode pattern according to its detection area, thereby maximizing the induction amount between the first detection electrode and the second detection electrode and improving the detection accuracy of the detection device.

[0068] Specifically, based on the above embodiment, in one embodiment of the present application, Figure 4 As shown, the first electrode pattern 11 includes a first electrode sub-pattern 111 and a second electrode sub-pattern 112, and the first electrode sub-pattern 111 and the second electrode sub-pattern 112 are centrally symmetrical about the symmetry center of the first electrode pattern 11. The first electrode sub-pattern 111 includes two first electrode line parts extending along the first direction A and two second electrode line parts extending along the second direction B, wherein two adjacent first electrode line parts are connected by a second electrode line part, and two adjacent second electrode line parts are connected by a first electrode line part; in this embodiment, as Figure 5As shown, the detection device has a detection area P, and the first detection electrode also includes: a first connecting line part 12 connecting the first end of the first electrode sub-graph 111 and the first end of the second electrode sub-graph 112 at the boundary of the detection area P, and a second connecting line part 13 connecting the second end of the first electrode sub-graph 111 and the second end of the second electrode sub-graph 112 at the boundary of the detection area P, so that the pattern of the first detection electrode is a closed pattern, wherein the first connecting line part 12 and the second connecting line part 13 are centrally symmetrical about the symmetry center of the first electrode pattern, so that the first detection electrode is a centrally symmetrical electrode.

[0069] In one embodiment of the present application, Figure 3 As shown, the second electrode pattern 21 includes at least two third electrode line parts extending along the third direction C and two fourth electrode line parts extending along the fourth direction D, two adjacent third electrode line parts are connected by one fourth electrode line part, and two adjacent fourth electrode line parts are connected by one third electrode line part.

[0070] Based on the above embodiments, in a specific embodiment of the present application, Figure 6 and Figure 7 As shown, the first electrode pattern 11 includes: a first graphic area 113 and a second graphic area 114 parallel to each other in the first direction A, and a third graphic area 115 connecting the first graphic area 113 and the second graphic area 114 in the first direction A. In the first reference plane, the projection of the third electrode line part 103 is located within the graphic area of the first electrode pattern and partially extends out of the graphic area of the first electrode pattern. The projection of the fourth electrode line part is located within the graphic area of the first electrode pattern; wherein,

[0071] In the first reference plane, if Figure 6 and Figure 7 As shown, the distances between the projection of the fourth electrode line portion 104 located in the first graphic area 113 and the two second electrode line portions 102 located on both sides thereof are equal, so that the capacitance between the fourth electrode line portion 104 located in the first graphic area 113 and the two second electrode line portions 102 located on both sides thereof are the same;

[0072] The distances between the projection of the fourth electrode line portion 104 located in the second graphic area 114 and the two second electrode line portions 102 located on both sides thereof are equal, so that the capacitances between the fourth electrode line portion 104 located in the second graphic area 114 and the two second electrode line portions 102 located on both sides thereof are equal;

[0073] The distances between the projection of the third electrode line portion 103 located within the third graphic area 115 and the two first electrode line portions 101 located on both sides thereof are equal, so that the capacitances between the third electrode line portion 103 and the two first electrode line portions 101 located on both sides thereof are equal;

[0074] In the first reference plane, the distances between the two ends of the projection of the fourth electrode line portion 104 located in the first graphic area 113 and the two first electrode line portions 101 located on both sides thereof are equal, so that the capacitances between the fourth electrode line portion 104 located in the first graphic area 113 and the two first electrode line portions 101 located on both ends thereof are equal;

[0075] The distances between the two ends of the projection of the fourth electrode line local area 104 located in the second graphic area 114 and the two first electrode line local areas located on both sides thereof are equal, so that the capacitance between the fourth electrode line local area 104 located in the second graphic area 114 and the two first electrode line local areas 101 located at both ends thereof is equal.

[0076] It should be noted that, in the above embodiment, the first electrode pattern and the second electrode pattern are both centrosymmetric images, but neither satisfies the axisymmetric condition.

[0077] Based on the above embodiment, in one embodiment of the present application, Figure 7 As shown, the second electrode pattern includes a first third electrode line portion, a second third electrode line portion, and a third third electrode line portion that are parallel to each other, and the second third electrode line portion is located between the first third electrode line portion and the third third electrode line portion;

[0078] The second detection electrode also includes: a third connecting line part 22 connecting the adjacent first-third electrode line parts and the second-third electrode line parts at the boundary of the detection area P, and a fourth connecting line part 23 connecting the second-third electrode line part and the third-third electrode line part at the boundary of the detection area P, so that the pattern of the second detection electrode is a closed pattern.

[0079] Optionally, in one embodiment of the present application, the lengths of the first connecting line portion, the second connecting line portion, the third connecting line portion and the fourth connecting line portion are the same, but the present application does not limit this and it depends on the specific circumstances.

[0080] Based on any of the above embodiments, in one embodiment of the present application, the first connecting line is partially formed into a rectangular ring electrode to reduce the resistance of the first connecting line. Similarly, the second connecting line, the third connecting line, and the fourth connecting line are partially formed into rectangular ring electrodes to reduce the resistance of the second connecting line, the third connecting line, and the fourth connecting line, thereby improving signal transmission speed. However, this application does not limit this, and the specific implementation depends on the circumstances.

[0081] Based on the above embodiments, in one embodiment of the present application, Figure 4 and Figure 8 As shown, the first detection electrode also includes: a fifth connection line part 14 connecting the first preset position of the first electrode sub-pattern 111 and the second connection line part 13, and a sixth connection line part 15 connecting the second preset position of the second electrode sub-pattern 112 and the first connection line part 12. The first preset position is different from the end position of the first electrode sub-pattern 111, and the second preset position is different from the end position of the second electrode sub-pattern 112, so as to increase the detection area of the first detection electrode.

[0082] It should be noted that if Figure 8 and Figure 9 As shown, the first lead-out end 30 for electrically connecting the first detection electrode 10 to other structures is located in the middle area of the second connection line part 13. In the embodiment of the present application, the first detection electrode 10 also includes the fifth connection line part 14 and the sixth connection line part 15, so that the first triangular area formed by the fifth connection line part 14, the second connection line part 13 and the partial area of the first electrode sub-pattern 111 can be symmetrical about the axis perpendicular to the second connection line part 13 passing through the first lead-out end 30, and the second triangular area formed by the sixth connection line part 15, the first connection line part 12 and the partial area of the second electrode sub-pattern 112 are centrally symmetrical with the first triangular area about the symmetry center of the first detection electrode, so as to improve the uniformity of the induction amount detected by the first detection electrode when detecting the conductor.

[0083] In practical applications, the maximum sensing distance between the first detection electrode and the second detection electrode is 3mm-5mm. Therefore, based on any of the above embodiments, in one embodiment of the present application, the angle between the first direction and the second direction is in the range of 60°-65°, including the endpoint value, which can be optionally 62°. The distance between the first detection electrode and the second detection electrode is 1.75mm, the distance between adjacent first electrode lines is 3.5mm, the distance between adjacent second electrode lines is 3.5mm, the distance between adjacent third electrode lines is 3.5mm, and the distance between adjacent fourth electrode lines is 3.5mm. In this embodiment, the effective sensing area of the detection device can reach 50mm 2 , but this application does not limit this and it depends on the specific circumstances.

[0084] like Figure 10 and Figure 11 As shown, compared with Figure 11 The structure of the first detection electrode and the second detection electrode shown in the figure is in the same fingerprint sensing area T. Figure 10 The induction quantity of the structure of the first detection electrode and the second detection electrode can be increased by 250, and the stability is high.

[0085] The above embodiment is described using an example in which the first electrode pattern and the second electrode pattern are different, but the present application is not limited to this. In other embodiments of the present application, the first electrode pattern and the second electrode pattern are the same. The following describes the case in which the first electrode pattern and the second electrode pattern are the same, in conjunction with specific embodiments.

[0086] Optionally, in one embodiment of the present application, Figure 12-14 As shown, the first electrode pattern is a centrally symmetrical pattern, the second electrode pattern is a centrally symmetrical pattern, and the first electrode pattern is rotated 90° around its symmetry center and overlaps with the second electrode pattern, so as to reduce the process difficulty when manufacturing the first electrode pattern and the second electrode pattern.

[0087] Based on the above embodiments, in one embodiment of the present application, Figure 12 As shown, the first electrode line part 101 and the second electrode line part 102 meet the vertical condition, and the third electrode line part 103 and the fourth electrode line part 104 meet the vertical condition. Specifically, in one embodiment of the present application, the first detection electrode is composed of electrode line parts extending along two different directions, and the second detection electrode is composed of electrode line parts extending along two different directions, that is, in the embodiment of the present application, the shapes of the first detection electrode and the second detection electrode are I-shaped.

[0088] like Figure 12 and Figure 11 As shown, compared with Figure 11 The structure of the first detection electrode and the second detection electrode shown in the figure is in the same fingerprint sensing area T. Figure 12 The inductive capacity of the structure of the first detection electrode and the second detection electrode can be increased by 100.

[0089] In another embodiment of the present application, the first detection electrode is partially composed of electrode lines extending along three different directions, and the second detection electrode is also partially composed of electrode lines extending along three different directions.

[0090] Specifically, in one embodiment of the present application, Figure 13 As shown, the first electrode pattern further includes a fifth electrode line portion 105 extending along a sixth direction E. Specifically, the first electrode pattern includes three first electrode line portions 101, the first first electrode line portion and the second first electrode line portion are connected via the second electrode line portion 102, and the second first electrode line portion and the third first electrode line portion are connected via the fifth electrode line portion 105, wherein the fifth direction does not satisfy the same condition as the first direction, nor does it satisfy the opposite condition, and the fifth direction does not satisfy the same condition as the second direction, nor does it satisfy the opposite condition;

[0091] Continue as Figure 13 As shown, the second electrode pattern also includes a sixth electrode line portion 106 extending along a seventh direction F, and the second electrode pattern includes three third electrode line portions, the first third electrode line portion and the second third electrode line portion are connected via the fourth electrode line portion 104, and the second third electrode line portion and the third third electrode line portion are connected via the sixth electrode line portion 106, wherein the seventh direction and the third direction do not meet the same condition or the opposite condition, and the seventh direction and the fourth direction do not meet the same condition or the opposite condition. It should be noted that in this embodiment, the first direction and the third direction do not meet the same condition or the opposite condition, and the second direction and the fourth direction do not meet the same condition or the opposite condition.

[0092] The above embodiments are all described using the example of the first detection electrode and the second detection electrode being located in different layers, that is, the first reference plane and the second reference plane being located in different planes. However, this application is not limited to this. In other embodiments of the application, the first reference plane and the second reference plane may also be located in the same plane. The following description uses the example of the first reference plane and the second reference plane being located in the same plane as an example in conjunction with specific embodiments.

[0093] Optionally, in one embodiment of the present application, Figure 14 As shown, the first detection electrode 10 is a closed ring electrode, the second detection electrode 20 is also a closed ring electrode, and the first detection electrode 10 and the second detection electrode 20 are located in the same plane. In this embodiment, the detection device uses the facing area between the first detection electrode and the second detection electrode in the eighth direction to detect the conductor that is in contact with or close to the detection device, wherein the eighth direction is parallel to the plane where the first detection electrode is located.

[0094] Specifically, based on the above embodiments, in one embodiment of the present application, the first detection electrode is a closed circular ring electrode, and the second detection electrode is a closed circular ring electrode, but the present application does not limit this. In other embodiments of the present application, the first detection electrode and the second detection electrode can also be closed ring electrodes of other shapes, depending on the specific circumstances.

[0095] Based on any of the above embodiments, in one embodiment of the present application, Figure 9 and Figure 12 As shown, the detection device also includes a first signal transmission line 50 electrically connected to the first detection electrode 10, and the first signal transmission line is used to transmit signals to the first detection electrode; and a second signal transmission line 60 electrically connected to the second detection electrode 20, and the second signal transmission line is used to transmit signals to the second detection electrode.

[0096] Based on any of the above embodiments, in one embodiment of the present application, if the capacitance between the first detection electrode and the second detection electrode is used to detect texture information of a conductor in contact with or near the detection device, such as for fingerprint detection, the detection device further includes a third detection electrode and a fourth detection electrode, and the capacitance between the third detection electrode and the fourth detection electrode is used to detect touch information of the conductor in contact with or near the detection device. The density of local electrode lines in the third detection electrode and the fourth detection electrode is greater than the density of local electrode lines in the first detection electrode and the second detection electrode, thereby increasing the touch detection sensitivity of the detection device.

[0097] Optionally, the third detection electrode and the first detection electrode are located in the same layer, and the fourth detection electrode and the second detection electrode are located in the same layer, so as to simplify the structure of the detection device and reduce the thickness of the detection device.

[0098] On the basis of the above embodiments, in one embodiment of the present application, the detection device further includes a first circuit board, which is used to control the first detection electrode and the second detection electrode to detect texture information of a conductor in contact with or approaching the detection device, and is used to control the touch information of the conductor in contact with or approaching the detection device, that is, one circuit board is used to simultaneously realize the control of the first detection electrode and the second detection electrode and the control of the third detection electrode and the fourth detection electrode, thereby reducing the cost of the detection device, but the present application is not limited to this. In other embodiments of the present application, the control of the first detection electrode and the second detection electrode and the control of the third detection electrode and the fourth detection electrode can also be independently controlled by different circuit boards, depending on the specific circumstances.

[0099] Specifically, in one embodiment of the present application, when the detection device is specifically manufactured, the manufacturing method of the detection device includes: forming a first electrode layer on the surface of a first substrate; etching the first electrode layer using a first mask as a mask to form a first detection electrode; forming a first insulating layer on the side of the first detection electrode away from the first detection electrode; forming a second electrode layer on the side of the first insulating layer away from the first detection electrode; etching the second electrode layer using a second mask as a mask to form a second detection electrode; and laminating the first circuit board on the first substrate to use the first circuit board to control the first detection electrode and the second detection electrode to realize detection of the conductor in contact with or close to the detection device.

[0100] In addition, an embodiment of the present application further provides an electronic device, comprising the detection device provided by any of the above embodiments. Optionally, in one embodiment of the present application, the electronic device further comprises: a display panel, wherein the display panel and the detection device are stacked so that the electronic device integrates both display and touch detection functions.

[0101] Specifically, in one embodiment of the present application, the projections of the first detection electrode and the second detection electrode on the display panel are located in the non-display area of the display panel, such as the fingerprint detection area, and the projections of the third detection electrode and the fourth detection electrode on the display panel are located in the display area of the display panel, but the present application does not limit this and it depends on the specific circumstances.

[0102] In summary, the detection device and electronic device provided in the embodiments of the present application can realize the detection of surface conductors, and under the premise of the same sensing area, the sensing amount is large and the detection accuracy is high.

[0103] The various parts in this manual are described in a combination of parallel and progressive manners. Each part focuses on the differences from other parts, and the same or similar parts between the various parts can be referenced to each other.

[0104] With respect to the above description of the disclosed embodiments, the features described in the various embodiments in this specification may be interchanged or combined with one another to enable those skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A detection device comprising: A first detection electrode, disposed on the first reference surface, having a first electrode pattern, wherein the first electrode pattern includes at least a portion of an electrode line extending along a first direction and a second direction, wherein the first direction and the second direction do not satisfy the same condition or opposite conditions; a second detection electrode disposed on the second reference surface and having a second electrode pattern, the second electrode pattern including at least electrode line portions extending along a third direction and a fourth direction, wherein the third direction and the fourth direction do not satisfy the same condition or opposite conditions; wherein the first reference plane and the second reference plane meet a parallel condition, and the capacitance between the first detection electrode and the second detection electrode is capable of detecting a conductor that is in contact with or close to the detection device; The first electrode pattern is different from the second electrode pattern, the first electrode pattern includes a first electrode sub-pattern and a second electrode sub-pattern, the first electrode sub-pattern and the second electrode sub-pattern are centrally symmetrical about a symmetry center of the first electrode pattern, and the first electrode sub-pattern includes two first electrode line portions extending along the first direction and two second electrode line portions extending along the second direction; The detection device has a detection area, and the first detection electrode further includes: a first connecting line portion connecting a first end of the first electrode sub-pattern and a first end of the second electrode sub-pattern at a boundary of the detection area, and a second connecting line portion connecting a second end of the first electrode sub-pattern and a second end of the second electrode sub-pattern at the boundary of the detection area, wherein the first connecting line portion and the second connecting line portion are centrally symmetric about a symmetry center of the first electrode pattern; The second electrode pattern includes at least two third electrode line parts extending along the third direction and two fourth electrode line parts extending along the fourth direction, two adjacent third electrode line parts are connected by one fourth electrode line part, and two adjacent fourth electrode line parts are connected by one third electrode line part. 2 . The detection device according to claim 1 , wherein the first reference plane and the second reference plane are not in the same plane; the first electrode pattern is a centrally symmetrical pattern, and the second electrode pattern is a centrally symmetrical pattern.

3. The detection device according to claim 2, wherein, in the fifth direction, the first electrode line partially overlaps with the fourth electrode line partially, the second electrode line partially overlaps with the third electrode line partially, and the fifth direction satisfies a perpendicular condition to the first reference plane. 4 . The detection device according to claim 3 , wherein the angle between the first direction and the second direction is greater than 0° and less than 90°; and the angle between the third direction and the fourth direction is greater than 0° and less than 90°.

5. The detection device according to claim 4, wherein the first electrode pattern comprises: a first graphic area and a second graphic area parallel to each other in the first direction, and a third graphic area connecting the first graphic area and the second graphic area in the first direction; within the first reference plane, a partial projection of the third electrode line is located within the graphic area of the first electrode pattern and partially extends out of the graphic area of the first electrode pattern; and a partial projection of the fourth electrode line is located within the graphic area of the first electrode pattern; In the first reference plane, the distances between the projection of the local portion of the fourth electrode line located within the first graphic area and the two local portions of the second electrode lines located on both sides thereof are equal, the distances between the projection of the local portion of the fourth electrode line located within the second graphic area and the two local portions of the second electrode lines located on both sides thereof are equal, and the distances between the projection of the local portion of the third electrode line located within the third graphic area and the two local portions of the first electrode lines located on both sides thereof are equal; Within the first reference plane, the distances from both ends of the projection of the local portion of the fourth electrode line located within the first graphic area to the two local portions of the first electrode line located on both sides thereof are equal, and the distances from both ends of the projection of the local portion of the fourth electrode line located within the second graphic area to the two local portions of the first electrode line located on both sides thereof are equal.

6. The detection device according to claim 5, wherein the second electrode pattern comprises a first third electrode line portion, a second third electrode line portion, and a third third electrode line portion that are parallel to each other, and the second third electrode line portion is located between the first third electrode line portion and the third third electrode line portion; The second detection electrode further includes: a third connecting line portion connecting the first third electrode line portion and the second third electrode line portion adjacent to each other at a boundary of the detection area, and a fourth connecting line portion connecting the second third electrode line portion and the third third electrode line portion at a boundary of the detection area; The first connecting line portion, the second connecting line portion, the third connecting line portion, and the fourth connecting line portion have the same length; The first detection electrode also includes: a fifth connecting line part connecting the first preset position of the first electrode sub-pattern and the second connecting line part, and a sixth connecting line part connecting the second preset position of the second electrode sub-pattern and the first connecting line part, the first preset position is different from the end position of the first electrode sub-pattern, and the second preset position is different from the end position of the second electrode sub-pattern.

7. A detection device comprising: A first detection electrode, disposed on the first reference surface, having a first electrode pattern, wherein the first electrode pattern includes at least a portion of an electrode line extending along a first direction and a second direction, wherein the first direction and the second direction do not satisfy the same condition or opposite conditions; a second detection electrode disposed on the second reference surface and having a second electrode pattern, the second electrode pattern including at least electrode line portions extending along a third direction and a fourth direction, wherein the third direction and the fourth direction do not satisfy the same condition or opposite conditions; wherein the first reference plane and the second reference plane meet a parallel condition, and the capacitance between the first detection electrode and the second detection electrode is capable of detecting a conductor that is in contact with or close to the detection device; The first electrode pattern includes three first electrode line portions extending along the first direction, a second electrode line portion extending along the second direction, and a fifth electrode line portion extending along a sixth direction, wherein the first electrode pattern includes three first electrode line portions, a first first electrode line portion and a second first electrode line portion are connected via the second electrode line portion, and a second first electrode line portion and a third first electrode line portion are connected via the fifth electrode line portion, wherein the sixth direction does not satisfy the same condition as the first direction, nor does it satisfy an opposite condition, and the sixth direction does not satisfy the same condition as the second direction, nor does it satisfy an opposite condition; The second electrode pattern includes three third electrode line parts extending along the third direction, a fourth electrode line part extending along the fourth direction and a sixth electrode line part extending along the seventh direction, and the second electrode pattern includes three third electrode line parts, the first third electrode line part and the second third electrode line part are connected through the fourth electrode line part, and the second third electrode line part and the third third electrode line part are connected through the sixth electrode line part, wherein the seventh direction does not meet the same condition as the third direction, nor does it meet the opposite condition, and the seventh direction does not meet the same condition as the fourth direction, nor does it meet the opposite condition. 8 . The detection device according to claim 7 , wherein the first reference plane and the second reference plane are not in the same plane; the first electrode pattern is a centrally symmetrical pattern, and the second electrode pattern is a centrally symmetrical pattern.

9. The detection device according to claim 8, wherein in the fifth direction, the first electrode line partially overlaps with the fourth electrode line partially, the second electrode line partially overlaps with the third electrode line partially, and the fifth direction satisfies a perpendicular condition to the first reference plane. 10 . The detection device according to claim 9 , wherein the first electrode pattern is rotated 90° around its symmetry center and coincides with the second electrode pattern. 11 . The detection device according to claim 10 , wherein a portion of the first electrode line and a portion of the second electrode line satisfy a perpendicular condition, and a portion of the third electrode line and a portion of the fourth electrode line satisfy a perpendicular condition.

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