CN214846672U

CN214846672U - Touch control device

Info

Publication number: CN214846672U
Application number: CN202121439265.3U
Authority: CN
Inventors: 陈箭雾; 侯卫京; 曹兴
Original assignee: FocalTech Electronics Shenzhen Co Ltd
Current assignee: FocalTech Electronics Shenzhen Co Ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2021-11-23
Anticipated expiration: 2031-06-25
Also published as: TWM622801U

Abstract

A touch device includes a cover plate and a first functional layer. The cover plate covers the first functional layer and is used for protecting the first functional layer. The first functional layer includes a plurality of first touch electrodes and a plurality of second touch electrodes. The cover plate covers the first touch electrode and the second touch electrode. The first touch electrode and the second touch electrode are matched with each other to realize touch detection. The second touch electrode and the first touch electrode are arranged on the same conductive layer and are meshed with each other, and the side surfaces of the conductive layers where the first touch electrode and the second touch electrode are arranged are flat surfaces in the direction perpendicular to the cover plate; or the second touch electrode and the first touch electrode are positioned on different conductive layers, and the projection of the second touch electrode on the conductive layer where the first touch electrode is positioned is meshed with the first touch electrode. The conductive layer where the first touch electrode is located further forms a plurality of auxiliary electrodes, and in the vertical direction of the cover plate, the side view surface of the first conductive layer is a flat surface so as to ensure the flatness of the cover plate.

Description

Touch control device

Technical Field

The utility model relates to a touch device.

Background

With the continuous development of electronic technology, most consumer electronic products such as mobile phones, portable computers, Personal Digital Assistants (PDAs), tablet computers, media players, etc. adopt touch structures as input devices, so that the products have a more friendly man-machine interaction mode. According to different touch control principles, the touch control structure includes a resistive touch control structure, a capacitive touch control structure, an infrared touch control structure, an acoustic wave touch control structure, and the like. Currently, touch structures widely used include resistive, capacitive, optical, and sonic touch structures. Particularly, the capacitive touch structure is widely applied. The capacitive touch structure has the advantages of good touch sensitivity, long service life, difficulty in being interfered by external signals and the like, and is widely applied to various consumer electronic products.

At present, a capacitive touch structure widely used includes a substrate, a sensing electrode formed on the substrate, a cover plate covering the sensing electrode, and a processor. With the development of technology, the thin film of the touch structure is a main trend. When the thickness of the cover plate of the touch structure is reduced, the gap between the sensing electrodes is likely to cause the surface of the touch structure to be not smooth enough.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a touch device aims at solving the not smooth problem of enough of thin filmization among the prior art's touch-control structure.

A touch device comprises a cover plate and a first functional layer; the cover plate covers the first functional layer and is used for protecting the first functional layer; the first functional layer is used for identifying touch operation and/or biological characteristics of a user; the first functional layer comprises a plurality of first touch electrodes and a plurality of second touch electrodes; the cover plate covers the first touch electrode and the second touch electrode; the first touch electrode and the second touch electrode are matched with each other to realize touch detection; two adjacent first touch electrodes are meshed with each other; the second touch electrode and the first touch electrode are arranged on the same conductive layer and are meshed with each other, and the side view surfaces of the first touch electrode and the second touch electrode arranged on the same conductive layer are a flat surface along the direction perpendicular to the cover plate; or the second touch electrode and the first touch electrode are arranged on different conductive layers, the projection of the second touch electrode on the conductive layer where the first touch electrode is located is mutually meshed with the first touch electrode, and the conductive layer where the first touch electrode is located is further patterned to form a plurality of auxiliary electrodes; and in the vertical direction of the cover plate, the side view surface of the conducting layer where the first touch electrode is located is a flat surface.

Optionally, the first functional layer specifically includes a first substrate, a second substrate, a third substrate, a first conductive layer, a second conductive layer, a third conductive layer, and a fourth conductive layer; the first conductive layer is patterned to form a plurality of first touch electrodes; the first conducting layer is clamped between the cover plate and the first substrate; the second conducting layer is clamped between the first substrate and the second substrate; the first conducting layer and the second conducting layer are respectively positioned on two opposite surfaces of the first substrate; the second conductive layer is patterned to form a plurality of second touch electrodes; the third conducting layer is clamped between the second substrate and the third substrate; the fourth conducting layer and the third conducting layer are respectively positioned on two opposite surfaces of the third substrate.

Optionally, the first touch electrode includes a main electrode portion, a plurality of first branch portions, a plurality of second branch portions, and a plurality of first connection portions; a substantially rectangular frame body of the main electrode portion; the main electrode part comprises two first bodies parallel to each other and two second bodies parallel to each other; the first body extends in a first direction and the second body extends in a second direction perpendicular to the first direction; the main electrode part is divided by a plurality of first connecting parts to form a plurality of first accommodating parts; each first accommodating part comprises one first branch part; the first branch part is formed by vertically extending one of the second main bodies along a first direction and is arranged at intervals with the other second main body; the first branch parts in two adjacent first accommodating parts are formed by oppositely extending two different second main bodies respectively; the second branch part is arranged on the outer side of the main electrode part and formed by vertically and outwardly extending the main electrode part along the first direction; the second branch parts are arranged on two sides of the second main body, and the second branch parts on the same side and the second branch parts on the other side are arranged in a staggered mode.

Optionally, the second branch portion and the second body located on the same side cooperate to form a plurality of second receiving portions; the auxiliary electrode is contained in the first containing part and the second containing part and is used for filling the first containing part and the second containing part so as to enable the surface of the first conducting layer to be flat.

Optionally, the auxiliary electrodes include a plurality of first auxiliary electrodes, a plurality of second auxiliary electrodes, and a plurality of third auxiliary electrodes; the first auxiliary electrode is positioned at the edge of the first conductive layer; the first auxiliary electrode is approximately E-shaped, and the opening direction of the first auxiliary electrode is far away from the first main body; the first auxiliary electrode is arranged in the second accommodating part; the second auxiliary electrode is approximately U-shaped; in the second direction, the opening directions of two adjacent second auxiliary electrodes are opposite; the second auxiliary electrode is arranged in the first accommodating part and accommodates the corresponding first branch part in the first accommodating part; the third auxiliary electrode is positioned at a non-edge position of the first conductive layer; the third auxiliary electrode is approximately in a cap shape; the third auxiliary electrode is accommodated in the second accommodating part at a non-edge position, and the corresponding second branch part is accommodated in the second accommodating part.

Optionally, the second conductive layer is patterned to form a plurality of second touch electrodes; the projection of the second touch electrode in the first conductive layer is meshed with the first touch electrode and is positioned in the first accommodating part and the second accommodating part; the second touch electrode comprises a plurality of edge touch parts, a plurality of first touch parts, a plurality of second touch parts and a plurality of second connecting parts; the edge touch part, the first touch part and the second touch part are all approximately U-shaped; the edge touch parts are arranged in a matrix, the first touch parts are arranged in a matrix, and the second touch parts are arranged in a matrix; the projection of the first touch part on the first conductive layer is positioned in the first accommodating part; the projection of the edge touch part in the first conductive layer is positioned in the second accommodating part; the projection of the second touch part on the first conductive layer is positioned in the second accommodating part; in the first direction, the edge touch part is arranged at the edge of the second conducting layer, and the first touch part and the second touch part which are positioned in the same row are clamped in the edge touch part; meanwhile, the plurality of first touch parts and the plurality of second touch parts are alternately arranged between the two edge touch parts in the same row; the first touch control part is electrically connected with the edge touch control part or the second touch control part which is adjacently arranged through the second connecting part; in the second direction, the edge touch parts are arranged in an insulating mode; the first touch parts positioned in the same row are electrically connected through the second connecting parts, and the opening directions of the first touch parts positioned in the same row are opposite; the second touch control parts are directly and electrically connected, and the opening directions of the second touch control parts which are positioned in the same row and are adjacently arranged are opposite; the opening directions of the first touch control part and the first second touch control part are opposite.

Optionally, the first functional layer specifically includes a first substrate and a first conductive layer; the first conductive layer is patterned to form a plurality of first touch electrodes and a plurality of second touch electrodes; the first conducting layer is clamped between the cover plate and the first substrate; the first touch electrodes are arranged in a matrix, and the second touch electrodes are arranged in a matrix.

Optionally, each of the first touch electrodes includes a main electrode portion, a plurality of first branch portions, a plurality of second branch portions, a plurality of first connection portions, and a plurality of third branch portions; a substantially rectangular frame body of the main electrode portion; the main electrode part comprises two first bodies parallel to each other and two second bodies parallel to each other; the first body extends in a first direction and the second body extends in a second direction perpendicular to the first direction; the main electrode part is divided by a plurality of first connecting parts to form a plurality of first accommodating parts; each first accommodating part comprises two first branch parts and two third branch parts; the first branch part is formed by vertically extending one of the second main bodies along a first direction and is arranged at intervals with the other second main body; the two first branch parts positioned in the same first accommodating part are formed by oppositely extending two different second main bodies respectively; the third branch parts are arranged in pairs; in the same first accommodating part, the third branch part is positioned between the two first branch parts; any pair of the third branch portions extends vertically from the two second bodies along the first direction; the second branch part is arranged on the outer side of the main electrode part and formed by vertically and outwardly extending the main electrode part along the first direction X; the second branch parts are arranged on two sides of the second main body; the second branch parts positioned on the same side and the second branch parts positioned on the other side are arranged in a staggered manner; the second branch parts and the second main body which are positioned on the same side are matched to form a plurality of second accommodating parts.

Optionally, the second touch electrode includes a plurality of first touch portions and a plurality of second touch portions; the first touch control parts are arranged in a matrix, and the second touch control parts are arranged in a matrix; in the first direction, the first touch parts and the second touch parts are alternately arranged; the first touch control part is accommodated in the second accommodating part; the first touch control part is meshed with the second branch part, and the first touch control part and the second branch part are arranged in an insulating mode; the second touch control part is accommodated in the first accommodating part; the second touch control part is meshed with the first branch part, and the second touch control part and the first branch part are arranged in an insulating mode.

Optionally, a plurality of via holes are further formed on the first conductive layer; one or two through holes are formed in each first touch part, and two through holes are formed in each second touch part; the through holes on the same second touch part are arranged linearly along the first direction; the second touch control part is electrically connected with the adjacent first touch control part through the through hole.

In the touch device, the first touch electrode and the second touch electrode are arranged to be mutually meshed to form a uniform and dense mesh surface, so that the side view surfaces of the first touch electrode and the second touch electrode are a flat surface; or the conducting layer where the first touch electrode is located is further patterned to form a plurality of auxiliary electrodes; in the vertical direction of the cover plate, the side view surface of the conducting layer where the first touch electrodes are located is a flat surface, so that the flatness of the surface of the first function layer is guaranteed, and meanwhile, the adjacent two first touch electrodes are meshed with each other, so that touch sensing signals are more stable when touch operation passes through the adjacent first touch electrodes, and the touch sensing device has better anti-interference capability.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic perspective view of the touch device of the present invention.

Fig. 2 is a schematic cross-sectional view of the first functional layer and the cover plate in fig. 1.

Fig. 3 is a schematic plan view of the first conductive layer of the first embodiment in fig. 2.

Fig. 4 is a schematic plan view of the first touch electrode in fig. 3.

Fig. 5a-5c are schematic plan views of the first auxiliary electrode, the second auxiliary electrode and the third auxiliary electrode in fig. 3.

Fig. 6 is a side view of the first conductive layer and the first substrate of fig. 3.

Fig. 7 is a schematic plan view of the second conductive layer in fig. 2.

Fig. 8 is a schematic plan view of the second conductive layer projected on the first conductive layer in fig. 2.

Fig. 9 is a schematic cross-sectional view of the first functional layer and the cover plate in fig. 1.

Fig. 10 is a schematic plan view of the first conductive layer of the second embodiment of fig. 9.

Fig. 11 is a schematic plan view of the first touch electrode in fig. 10.

Fig. 12 is a side view of the first conductive layer and the first substrate of fig. 10.

Fig. 13a-13b are schematic plan views of the second touch electrode in fig. 9.

Description of the main elements

Touch device 1

Cover plate 10

First

functional layer

20, 20a, 20b

Second functional layer 30

First substrate 21

Second substrate 22

Third substrate 23

First

conductive layers

24a, 24b

Second conductive layer 25

Third conductive layer 26

Fourth conductive layer 27

Protective layer 29

First touch electrodes

40, 40a, 40b

The main electrode portion 41

First body 411

Second body 412

First branch portion 42

Second branch portion 43

First connection portion 44

First receiving part 45

Second receiving portion 46

Third branch 47

Auxiliary electrode 50

First auxiliary electrode 51

Second auxiliary electrode 52

Third auxiliary electrode 53

Second touch electrodes

60a, 60b

Edge touch part 61

First touch part 62

Second touch portion 63

Second connecting part 64

First pattern 621

Second pattern 623

Third pattern 631

Connecting arm 634

Via 65

The following detailed description of the invention will be further described in conjunction with the above-identified drawings.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work shall belong to the protection scope of the present invention.

The terms "first", "second" and "third" etc. in the description of the invention and the above-mentioned drawings are used for distinguishing different objects and not for describing a particular order. Furthermore, the terms "comprises" and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or modules is not limited to the listed steps or modules but may alternatively include other steps or modules not listed or inherent to such process, method, article, or apparatus.

The following describes a specific embodiment of the touch device according to the present invention with reference to the drawings.

Please refer to fig. 1, which is a schematic perspective view of a touch device 1 according to an embodiment of the present invention. In at least one embodiment of the present invention, the touch device 1 may be a mobile device such as a Personal computer, a tablet computer, a smart phone, a Personal Digital Assistant (PDA), a game machine, an interactive web tv (Internet Protocol Television, IPTV), an intelligent wearable device, a navigation device, or a fixed device such as a desktop computer, a server, or a Digital Television. The touch device 1 may have one or more of a touch function, a display function, a fingerprint recognition function, and a camera function.

The touch device 1 includes a cover plate 10 and a first functional layer 20.

The cover plate 10 is made of a transparent material or a non-transparent material. The cover plate 10 may be a glass substrate, or other transparent or non-transparent substrate having a high-strength, high-hardness material. In at least one embodiment of the present invention, the cover plate 10 may be made of a material such as Polycarbonate (PC), Polyester (PET), polymethyl methacrylate (PMMA), Cyclic Olefin Copolymer (COC), or Polyether sulfone (PES).

The first functional layer 20 is used to recognize a touch operation and/or a biometric feature of a user. The first functional layer 20 is disposed under the cap plate 10. In at least one embodiment of the present invention, the first functional layer 20 may be a touch layer (not shown) to identify at least one of a touch position and a touch force of a user or a combination thereof. The first functional layer 20 is made of a conductive material, and may be patterned to form a plurality of first touch electrodes 40a/40b (see fig. 3 and 10) and a plurality of second touch electrodes 60a/60b (see fig. 7 and 10). The first touch electrodes 40a/40b and the second touch electrodes 60a/60b are mutually engaged in the same layer or mutually engaged in the projection when the layers are different, and two adjacent first touch electrodes 40a/40b are mutually engaged. Meanwhile, the first functional layer 20 may further include a biometric identification layer (not shown) to identify a biometric characteristic of the user. In at least one embodiment of the present invention, the biometric features may be, but are not limited to, fingerprints, human faces, irises, and the like. In at least one embodiment of the present invention, the first functional layer 20 may be a 4-layer conductive structure or a 2-layer conductive structure. The surface of the first functional layer 20 opposite to the cover plate 10 is a flat surface or a relatively uniform and dense net shape.

The touch device 1 may further comprise a second functional layer 30. The second functional layer 30 is for displaying image information. In at least one embodiment of the present invention, the second functional layer 30 may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display layer, an Organic Light Emitting Diode (OLED) display layer, an electrophoretic display layer, and the like, but is not limited thereto. The second functional layer 30 is made of a conductive material and may be patterned to form a plurality of pixel electrodes. In other embodiments, the second functional layer 30 may also form a plurality of photosensitive elements (not shown), such as a Charge Coupled Device (CCD) or a Complementary Metal-Oxide-Semiconductor (CMOS) element, to sense the light variation and generate a response signal (not shown).

Implementation mode one

Fig. 2 is a cross-sectional view of the first functional layer 20a according to the first embodiment. In the present embodiment, the first functional layer 20a has a 4-layer conductive structure. The first functional layer 20a includes a first substrate 21, a second substrate 22, a third substrate 23, a first conductive layer 24a, a second conductive layer 25, a third conductive layer 26, a fourth conductive layer 27, and a protective layer 29, which are provided at equal sizes.

The first substrate 21, the second substrate 22 and the third substrate 23 are made of transparent or non-transparent materials. In the present embodiment, the first substrate 21, the second substrate 22 and the third substrate 23 may be glass substrates or other transparent or non-transparent substrates with high strength and high hardness, such as Polycarbonate (PC), Polyester (PET), polymethyl methacrylate (PMMA), Cyclic Olefin Copolymer (COC) or Polyether sulfone (PES).

The first conductive layer 24a, the second conductive layer 25, the third conductive layer 26, and the fourth conductive layer 27 are made of a conductive material.

The first conductive layer 24a is sandwiched between the cover plate 10 and the first substrate 21. In an embodiment of the present invention, the first conductive layer 24a may be patterned to form a plurality of first touch electrodes 40 a.

Please refer to fig. 3 and fig. 4. Fig. 3 is a schematic plan view of the first conductive layer 24a, and fig. 4 is a schematic plan view of the first touch electrode 40 a. The plurality of first touch electrodes 40a are arranged along a first direction X and extend along a second direction Y perpendicular to the first direction X. Two adjacent first touch electrodes 40a are engaged with each other. Each of the first touch electrodes 40a includes a main electrode portion 41, a plurality of first branch portions 42, a plurality of second branch portions 43, and a plurality of first connection portions 44.

Fig. 4 is a schematic plan view of the main electrode portion 41. The main electrode portion 41 is a substantially rectangular frame. The main electrode portion 41 includes two first bodies 411 parallel to each other and two second bodies 412 parallel to each other. The first body 411 extends along the first direction X, and the second body 412 extends along the second direction Y. The first body 411 is located between the two second bodies 412, and two ends of the first body 411 are connected to the same end of the two second bodies 412.

The main electrode portion 41 is partitioned by the plurality of first connecting portions 44 to form a plurality of first receiving portions 45. The first receiving portion 45 is substantially rectangular. Each of the first receiving portions 45 includes one of the first branch portions 42 therein.

The first branch portion 42 is located in the first receiving portion 45. The first branch portion 42 is formed by one of the second bodies 412 extending vertically along the first direction X, and is spaced apart from the other second body 412. The first branch portions 42 in two adjacent first receiving portions 45 are formed by extending two different second bodies 412 in opposite directions. For example, in the second direction Y, the first branch portion 42 in the first receiving portion 45 is formed by the second body 412 located on the left side extending vertically toward the second body 412 located on the right side, and the first branch portion 42 in the adjacent first receiving portion 45 is formed by the second body 412 located on the right side extending vertically toward the second body 412 located on the left side.

The second branch portion 43 is disposed outside the main electrode portion 41, and is formed by extending the main electrode portion 41 perpendicularly outward along the first direction X. The second branch portions 43 are disposed at both sides of the second body 412. The second branch portions 43 on the same side are staggered with the second branch portions 43 on the other side. The second branch portion 43 and the second body 412 located on the same side cooperate to form a plurality of second receiving portions 46. In the present embodiment, the length of the second branch portion 43 located at the edge is smaller than the length of the second branch portion 43 located between two adjacent main electrode portions 41, and the length of each of the other second branch portions 43 is the same. The length of the second branch portion 43 is the same as the length of the first branch portion 42.

The first conductive layer 24a is also patterned to form a plurality of auxiliary electrodes 50. The auxiliary electrode 50 is accommodated in the first accommodating portion 45 and the second accommodating portion 46, and is used for filling the first accommodating portion 45 and the second accommodating portion 46, so that the electrodes on the first substrate 21 are uniformly arranged, and the surface of the cover plate 10 covered by the cover plate is flat. The auxiliary electrode and the first touch electrode 40a are insulated from each other. The auxiliary electrodes 50 include a plurality of first auxiliary electrodes 51 (shown in fig. 5 a), a plurality of second auxiliary electrodes 52 (shown in fig. 5 b), and a plurality of third auxiliary electrodes 53 (shown in fig. 5 c). The first auxiliary electrode 51 is located at an edge of the first conductive layer 24 a. The first auxiliary electrode 51 is substantially E-shaped, and has an opening direction away from the first body 411. The first auxiliary electrode 51 is disposed in the second receiving portion 46. The second auxiliary electrode 52 is substantially U-shaped. In the second direction Y, the opening directions of two adjacent second auxiliary electrodes 52 are opposite. The second auxiliary electrode 52 is disposed in the first receiving portion 45, and receives the corresponding first branch portion 42 therein. The third auxiliary electrode 53 is located at a non-edge position of the first conductive layer 24a and is substantially in a cap shape. The third auxiliary electrode 53 is housed in the second housing portion 46, and houses the corresponding second branch portion 43 therein. As shown in fig. 6, due to the filling of the auxiliary electrode 50, the side view surface of the first conductive layer 24a is a flat surface in the vertical direction to the cover plate 10, and no gap exists in the side view surface of the first conductive layer 24 a.

Fig. 7 is a schematic plan view of the second touch electrode 60 a. The second conductive layer 25 is sandwiched between the first substrate 21 and the second substrate 22. In this embodiment, the second conductive layer 25 is disposed on the surface of the second substrate 22. The first conductive layer 24a and the second conductive layer 25 are respectively located on two opposite surfaces of the first substrate 21. The second conductive layer 25 may be patterned to form a plurality of second touch electrodes 60 a. The second touch electrode 60a is perpendicular to the first touch electrode 40a, and the two touch electrodes cooperate with each other to sense a touch position and/or a touch force. In other embodiments, the second touch electrode 60a and the first touch electrode 40a may be disposed at other angles. The projection of the second touch electrode 60a in the first conductive layer 24a is engaged with the first touch electrode 40a, and overlaps the second auxiliary electrode 52 and the second auxiliary electrode 52. The second touch electrodes 60a are disposed at intervals along the second direction Y and extend along the first direction X. The second touch electrode 60a includes a plurality of edge touch portions 61, a plurality of first touch portions 62, a plurality of second touch portions 63, and a plurality of second connecting portions 64. In the present embodiment, the edge touch portion 61, the first touch portion 62, and the second touch portion 63 are substantially U-shaped. The edge touch portions 61 are arranged in a 2 × 2 matrix, the first touch portions 62 are arranged in a 2 × 2 matrix, and the second touch portions 63 are arranged in a 2 × 3 matrix. In other embodiments, the number of the first touch portions 62 and the second touch portions 63 can be adjusted according to the requirement.

In the first direction X, the edge touch portion 61 is disposed at an edge of the second conductive layer 25, and sandwiches the first touch portion 62 and the second touch portion 63 located in the same row. Meanwhile, the first touch portions 62 and the second touch portions 63 are alternately disposed between the two edge touch portions 61 in the same row. The first touch portion 62 is electrically connected to the edge touch portion 61 or the second touch portion 63 disposed adjacent to the first touch portion through the second connecting portion 64. For example, the first touch portion 62 located between the edge touch portion 61 and the second touch portion 63 is electrically connected to the edge touch portion 61 and the second touch portion 63 through the second connection portion 64. The first touch portion 62 located between the two second touch portions 63 is electrically connected to the two second touch portions 63 through the second connecting portion 64.

In the second direction Y, the edge touch portions 61 are insulated from each other. The first touch portions 62 in the same row are electrically connected by the second connecting portion 64, and the opening directions of the first touch portions 62 in the same row are opposite. The second touch portions 63 are directly electrically connected to each other, and the openings of the second touch portions 63 located in the same row and adjacent to each other are opposite in direction. For example, the first second touch portion 63 and the last second touch portion 63 have the same opening direction, and the opening direction of the second touch portion 63 located in the middle is opposite to the opening direction of the first touch portion 63. The openings of the first touch portion 62 and the first second touch portion 63 face opposite directions.

Fig. 8 is a schematic plan view of the second conductive layer 25 projected on the first conductive layer 24 a. The projection of the first touch portion 62 on the first conductive layer 24a is located in the first receiving portion 45, and overlaps the second auxiliary electrode 52 located in the first receiving portion 45. The projection of the edge touch portion 61 in the first conductive layer 24a is located in the second receiving portion 46, and partially overlaps the first auxiliary electrode 51 located in the second receiving portion 46. The projection of the second touch portion 63 on the first conductive layer 24a is located in the second receiving portion 46, and overlaps the third auxiliary electrode 53 located in the second receiving portion 46.

The third conductive layer 26 is sandwiched between the second substrate 22 and the third substrate 23, and is located on two opposite surfaces of the second substrate 22 with the second conductive layer 25. The third conductive layer 26 may be patterned to form a plurality of first signal traces. The first signal trace is used for establishing electrical connection between the first touch electrode 40a and the processor so as to transmit a touch signal.

The fourth conductive layer 27 is sandwiched between the third substrate 23 and the protective layer 29. The fourth conductive layer 27 may be patterned to form a plurality of second signal traces. The second signal trace is used for establishing electrical connection between the second touch electrode 60a and the processor, so as to transmit a touch signal.

The cover plate 10 is disposed on a surface of the first conductive layer 24a away from the first substrate 21. The cap plate 10 is made of an insulating material. In the present embodiment, the cover plate 10 is Mylar (Mylar) of a polyester film structure.

The protective layer 29 is disposed on a surface of the fourth conductive layer 27 away from the third substrate 23. The protective layer is used to protect the fourth conductive layer 27.

The processor provides a sensing signal through the third conductive layer 26 and the fourth conductive layer 27 to drive or sense the first conductive layer 24a and the second conductive layer 25, respectively.

In the touch device 1, the auxiliary electrode 50 is disposed in the first conductive layer 24a to fill the gaps of the first touch electrode 40a to form a uniform and dense mesh surface, so that the side view surface of the first conductive layer 24a in the direction perpendicular to the cover plate 10 is a flat surface, and the cover plate 10 covers the back surface smoothly. The projections of the first touch electrode 40a and the second touch electrode 60a are mutually engaged in the direction perpendicular to the cover plate 10, so as to further ensure the flatness of the surface of the first functional layer 20. Meanwhile, the two adjacent first touch electrodes 40a are meshed with each other, so that a touch sensing signal is more stable when the touch operation passes through the adjacent first touch electrodes 40a, and the touch sensing circuit has better anti-interference capability.

Second embodiment

Fig. 9 and fig. 10 are a schematic cross-sectional view of the first functional layer 20b and a schematic plan view of the first conductive layer 24b according to the second embodiment. The first functional layer 20b of the second embodiment is a 2-layer conductive structure. The first functional layer 20b includes a first substrate 21, a first conductive layer 24b, and a second conductive layer 25.

The first substrate 21 is made of a transparent or non-transparent material. In the present embodiment, the first substrate 21 may be a glass substrate, or other transparent or non-transparent substrate with high strength and high hardness, such as Polycarbonate (PC), Polyester (PET), polymethyl methacrylate (PMMA), Cyclic Olefin Copolymer (COC), or Polyether sulfone (PES).

The first conductive layer 24b is sandwiched between the cover plate 10 and the first substrate 21. The first conductive layer 24b may be patterned to form a plurality of first touch electrodes 40b and a plurality of second touch electrodes 60 b. The first touch electrode 40b and the second touch electrode 60b are engaged with each other, and adjacent first touch electrodes 40b are engaged with each other. As shown in fig. 12, the first touch electrode 40b and the second touch electrode 60b engaged with each other in the direction perpendicular to the cover plate 10 make the side view surface of the first conductive layer 24b a flat surface, and no gap exists in the side view surface of the first conductive layer 24 b.

Please refer to fig. 11, which is a schematic plan view of the first touch electrode 40 b. Each of the first touch electrodes 40b includes a main electrode portion 41, a plurality of first branch portions 42, a plurality of second branch portions 43, a plurality of first connection portions 44, and a plurality of third branch portions 47.

The main electrode portion 41 is a substantially rectangular frame. The main electrode portion 41 includes two first bodies 411 parallel to each other and two second bodies 412 parallel to each other. The first body 411 extends along the first direction X, and the second body 412 extends along the second direction Y. The first body 411 is located between the two second bodies 412, and two ends of the first body 411 are respectively connected to the same ends of the two second bodies 412.

The main electrode portion 41 is partitioned by the plurality of first connecting portions 44 to form a plurality of first receiving portions 45. The first receiving portion 45 is substantially rectangular. Each of the first receiving portions 45 includes two of the first branch portions 42 and two of the third branch portions 47.

The second branch portion 43 is disposed outside the main electrode portion 41, and is formed by extending the main electrode portion 41 perpendicularly outward along the first direction X. The second branch portions 43 are disposed at both sides of the second body 412. The second branch portions 43 on one side are staggered with the second branch portions 43 on the other side. The second branch portion 43 and the second body 412 located on the same side cooperate to form a plurality of second receiving portions 46. In the present embodiment, the length of the second branch portion 43 located at the edge is smaller than the length of the second branch portion 43 located between two adjacent main electrode portions 41, and the length of each of the other second branch portions 43 is the same. The length of the second branch portion 43 at the non-edge is the same as the length of the first branch portion 42.

Referring to fig. 10, the third branches 47 are provided in pairs. In the same first receiving portion 45, the third branch portion 47 is located between the two first branch portions 42. Any pair of the third branch portions 47 extends perpendicularly from the two second bodies 412 in the first direction X, respectively.

The second touch electrodes 60b are arranged in a matrix. The second touch electrode 60b is accommodated in the first accommodating portion 45 and the second accommodating portion 46, and is engaged with the first touch electrode 40 b. The second touch electrode 60b and the first touch electrode 40b cooperate with each other to realize touch sensing.

Fig. 13a to 13b are schematic plan views of the first touch portion 62 and the second touch portion 63. The second touch electrode 60b includes a plurality of first touch portions 62 and a plurality of second touch portions 63. The first touch portions 62 are arranged in a matrix, and the second touch portions 63 are arranged in a matrix. In the present embodiment, the first touch portions 62 are arranged in a 3 × 4 array, and the second touch portions 63 are arranged in a 3 × 3 array. In the first direction X, the first touch portions 62 and the second touch portions 63 are alternately arranged.

The first touch portion 62 is accommodated in the second accommodating portion 46. The first touch portion 62 is engaged with the second branch portion 43, and is insulated therebetween. The first touch portion 62 includes two first patterns 621 and two second patterns 623. The first patterns 621 are disposed at intervals in the second direction Y. The second patterns 623 are disposed at intervals along the second direction Y and between the two first patterns 621. The second pattern 623 partially overlaps the two first patterns 621. In this embodiment, the first pattern 621 and the second pattern 623 are each substantially U-shaped. Wherein, the opening direction of the first second pattern 623 is opposite to the opening direction of the second pattern 623. The openings of the first touch portion 62 and the first second touch portion 63 face opposite directions.

The second touch portion 63 is accommodated in the first accommodating portion 45. The second touch portion 63 is engaged with the first branch portion 42, and is disposed in an insulating manner therebetween. The second touch portion 63 includes two third patterns 631 and a connecting arm 634. Two of the third patterns 631 are disposed at intervals in the second direction Y. The third pattern 631 has a substantially U-shape. The opening directions of the two third patterns 631 are opposite. The connection arm 634 is vertically connected between the two third patterns 631, is located between the two oppositely disposed third branches 47, and is insulated therefrom.

The first conductive layer 24b is further provided with a plurality of via holes 65. Each of the first touch portions 62 located at the edge is provided with one of the via holes 65, each of the other first touch portions 62 is provided with two of the via holes 65, and each of the second touch portions 63 is provided with two of the via holes 65. The via holes 65 on the same second touch portion 63 are linearly arranged along the first direction X. The second touch portion 63 is electrically connected to the adjacent first touch portion 62 through the via hole 65. In this embodiment, the via hole 65 is opened in an overlapping region of the second pattern 623 and the first pattern 621 on the first touch portion 62. In the second touch portion 63, the via hole 65 is opened at a portion where the third pattern 631 is connected to the connection arm 634.

The second conductive layer 25 is sandwiched between the first substrate 21 and the protective layer 29. The second conductive layer 25 can be patterned to form the via hole 65 for connecting the first touch portion 62 and the second touch portion 63, so that the first touch portion 62 and the second touch portion 63 form the complete and conductive second touch electrode 60 b. And the second conductive layer 25 can be patterned to form a plurality of first signal traces and a plurality of second signal traces. The first signal trace and the second signal trace are used for establishing electrical connection between the first touch electrode 40b, the second touch electrode 60b and the processor.

The protective layer 29 is disposed on a surface of the second conductive layer 25 away from the first substrate 21. The protective layer 29 serves to protect the second conductive layer 25.

The cover plate 10 is disposed on a surface of the first conductive layer 24b away from the first substrate 21. The cap plate 10 is made of an insulating material. The cover plate 10 is Mylar (Mylar) of a polyester film structure.

The processor sends out a sensing signal for driving or sensing the first touch electrode 40b and the second touch electrode 60b through the second conductive layer 25.

In the touch device 1, the first touch electrode 40b and the second touch electrode 60b are disposed in the same layer in the first conductive layer 24b, and are engaged with each other, so as to ensure that a side view plane of the first conductive layer 24b is a flat surface in a direction perpendicular to the cover plate 10. Meanwhile, the two adjacent first touch electrodes 40b are meshed with each other, so that a touch sensing signal is more stable when the touch operation passes through the adjacent first touch electrodes 40b, and better anti-interference capability is achieved.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules described is merely a logical division, and other divisions may be realized in practice, for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or modules through some interfaces, and may be in an electrical or other form.

The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the embodiment.

It should also be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

As described above, the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A touch device comprises a cover plate and a first functional layer; the cover plate covers the first functional layer and is used for protecting the first functional layer; the first functional layer is used for identifying touch operation and/or biological characteristics of a user; the improvement lies in that: the first functional layer comprises a plurality of first touch electrodes and a plurality of second touch electrodes; the cover plate covers the first touch electrode and the second touch electrode; the first touch electrode and the second touch electrode are matched with each other to realize touch detection; two adjacent first touch electrodes are meshed with each other; the second touch electrode and the first touch electrode are arranged on the same conductive layer and are meshed with each other, and the side view surfaces of the first touch electrode and the second touch electrode arranged on the same conductive layer are a flat surface along the direction perpendicular to the cover plate; or the second touch electrode and the first touch electrode are arranged on different conductive layers, the projection of the second touch electrode on the conductive layer where the first touch electrode is located is mutually meshed with the first touch electrode, and the conductive layer where the first touch electrode is located is further patterned to form a plurality of auxiliary electrodes; and in the vertical direction of the cover plate, the side view surface of the conducting layer where the first touch electrode is located is a flat surface.

2. The touch device of claim 1, wherein the first functional layer comprises a first substrate, a second substrate, a third substrate, a first conductive layer, a second conductive layer, a third conductive layer, and a fourth conductive layer; the first conductive layer is patterned to form a plurality of first touch electrodes; the first conducting layer is clamped between the cover plate and the first substrate; the second conducting layer is clamped between the first substrate and the second substrate; the first conducting layer and the second conducting layer are respectively positioned on two opposite surfaces of the first substrate; the second conductive layer is patterned to form a plurality of second touch electrodes; the third conducting layer is clamped between the second substrate and the third substrate; the fourth conducting layer and the third conducting layer are respectively positioned on two opposite surfaces of the third substrate.

3. The touch device according to claim 2, wherein the first touch electrode comprises a main electrode portion, a plurality of first branch portions, a plurality of second branch portions, and a plurality of first connection portions; a substantially rectangular frame body of the main electrode portion; the main electrode part comprises two first bodies parallel to each other and two second bodies parallel to each other; the first body extends in a first direction and the second body extends in a second direction perpendicular to the first direction; the main electrode part is divided by a plurality of first connecting parts to form a plurality of first accommodating parts; each first accommodating part comprises one first branch part; the first branch part is formed by vertically extending one of the second main bodies along a first direction and is arranged at intervals with the other second main body; the first branch parts in two adjacent first accommodating parts are formed by oppositely extending two different second main bodies respectively; the second branch part is arranged on the outer side of the main electrode part and formed by vertically and outwardly extending the main electrode part along the first direction; the second branch parts are arranged on two sides of the second main body, and the second branch parts on the same side and the second branch parts on the other side are arranged in a staggered mode.

4. The touch device of claim 3, wherein the second branch portion and the second body located on the same side cooperate to form a plurality of second receiving portions; the auxiliary electrode is contained in the first containing part and the second containing part and is used for filling the first containing part and the second containing part so as to enable the surface of the first conducting layer to be flat.

5. The touch device of claim 4, wherein the auxiliary electrodes comprise a plurality of first auxiliary electrodes, a plurality of second auxiliary electrodes, and a plurality of third auxiliary electrodes; the first auxiliary electrode is positioned at the edge of the first conductive layer; the first auxiliary electrode is approximately E-shaped, and the opening direction of the first auxiliary electrode is far away from the first main body; the first auxiliary electrode is arranged in the second accommodating part; the second auxiliary electrode is approximately U-shaped; in the second direction, the opening directions of two adjacent second auxiliary electrodes are opposite; the second auxiliary electrode is arranged in the first accommodating part and accommodates the corresponding first branch part in the first accommodating part; the third auxiliary electrode is positioned at a non-edge position of the first conductive layer; the third auxiliary electrode is approximately in a cap shape; the third auxiliary electrode is accommodated in the second accommodating part at a non-edge position, and the corresponding second branch part is accommodated in the second accommodating part.

6. The touch device of claim 4, wherein the second conductive layer is patterned to form a plurality of second touch electrodes; the projection of the second touch electrode in the first conductive layer is meshed with the first touch electrode and is positioned in the first accommodating part and the second accommodating part; the second touch electrode comprises a plurality of edge touch parts, a plurality of first touch parts, a plurality of second touch parts and a plurality of second connecting parts; the edge touch part, the first touch part and the second touch part are all approximately U-shaped; the edge touch parts are arranged in a matrix, the first touch parts are arranged in a matrix, and the second touch parts are arranged in a matrix; the projection of the first touch part on the first conductive layer is positioned in the first accommodating part; the projection of the edge touch part in the first conductive layer is positioned in the second accommodating part; the projection of the second touch part on the first conductive layer is positioned in the second accommodating part; in the first direction, the edge touch part is arranged at the edge of the second conducting layer, and the first touch part and the second touch part which are positioned in the same row are clamped in the edge touch part; meanwhile, the plurality of first touch parts and the plurality of second touch parts are alternately arranged between the two edge touch parts in the same row; the first touch control part is electrically connected with the edge touch control part or the second touch control part which is adjacently arranged through the second connecting part; in the second direction, the edge touch parts are arranged in an insulating mode; the first touch parts positioned in the same row are electrically connected through the second connecting parts, and the opening directions of the first touch parts positioned in the same row are opposite; the second touch control parts are directly and electrically connected, and the opening directions of the second touch control parts which are positioned in the same row and are adjacently arranged are opposite; the opening directions of the first touch control part and the first second touch control part are opposite.

7. The touch device of claim 1, wherein the first functional layer comprises a first substrate and a first conductive layer; the first conductive layer is patterned to form a plurality of first touch electrodes and a plurality of second touch electrodes; the first conducting layer is clamped between the cover plate and the first substrate; the first touch electrodes are arranged in a matrix, and the second touch electrodes are arranged in a matrix.

8. The touch device according to claim 7, wherein each of the first touch electrodes comprises a main electrode portion, a plurality of first branch portions, a plurality of second branch portions, a plurality of first connection portions, and a plurality of third branch portions; a substantially rectangular frame body of the main electrode portion; the main electrode part comprises two first bodies parallel to each other and two second bodies parallel to each other; the first body extends in a first direction and the second body extends in a second direction perpendicular to the first direction; the main electrode part is divided by a plurality of first connecting parts to form a plurality of first accommodating parts; each first accommodating part comprises two first branch parts and two third branch parts; the first branch part is formed by vertically extending one of the second main bodies along a first direction and is arranged at intervals with the other second main body; the two first branch parts positioned in the same first accommodating part are formed by oppositely extending two different second main bodies respectively; the third branch parts are arranged in pairs; in the same first accommodating part, the third branch part is positioned between the two first branch parts; any pair of the third branch portions extends vertically from the two second bodies along the first direction; the second branch part is arranged on the outer side of the main electrode part and formed by vertically and outwardly extending the main electrode part along the first direction X; the second branch parts are arranged on two sides of the second main body; the second branch parts positioned on the same side and the second branch parts positioned on the other side are arranged in a staggered manner; the second branch parts and the second main body which are positioned on the same side are matched to form a plurality of second accommodating parts.

9. The touch device of claim 8, wherein the second touch electrode comprises a plurality of first touch portions and a plurality of second touch portions; the first touch control parts are arranged in a matrix, and the second touch control parts are arranged in a matrix; in the first direction, the first touch parts and the second touch parts are alternately arranged; the first touch control part is accommodated in the second accommodating part; the first touch control part is meshed with the second branch part, and the first touch control part and the second branch part are arranged in an insulating mode; the second touch control part is accommodated in the first accommodating part; the second touch control part is meshed with the first branch part, and the second touch control part and the first branch part are arranged in an insulating mode.

10. The touch device of claim 9, wherein the first conductive layer further comprises a plurality of vias; one or two through holes are formed in each first touch part, and two through holes are formed in each second touch part; the through holes on the same second touch part are arranged linearly along the first direction; the second touch control part is electrically connected with the adjacent first touch control part through the through hole.