CN110727366A - Touch structure, manufacturing method of touch structure, touch display screen and electronic equipment - Google Patents
Touch structure, manufacturing method of touch structure, touch display screen and electronic equipment Download PDFInfo
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- CN110727366A CN110727366A CN201810785397.8A CN201810785397A CN110727366A CN 110727366 A CN110727366 A CN 110727366A CN 201810785397 A CN201810785397 A CN 201810785397A CN 110727366 A CN110727366 A CN 110727366A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
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Abstract
The invention provides a touch structure, a manufacturing method of the touch structure, a touch display screen and electronic equipment. The touch structure comprises a first transparent substrate, a driving electrode layer, a first glue layer, a second transparent substrate and an induction electrode layer, wherein the first transparent substrate, the driving electrode layer, the first glue layer and the second transparent substrate are stacked, the induction electrode layer comprises a plurality of touch induction electrodes, the first side edge of the induction electrode layer further comprises a plurality of suspension induction electrodes arranged at intervals, the suspension induction electrodes are coupled with the driving electrode, so that an electric field is generated in the surrounding space of the touch structure, and the electric field is used for detecting and positioning a conductor entering the electric field. When a conductor enters the electric field, the distribution of electric field lines at the position of the conductor can be changed, the position of the suspension touch control is determined through the change of the electric field, and the function of the suspension touch control is realized. The suspension induction electrode is arranged on the first side edge of the induction electrode layer, the frame can be reduced, the screen occupation ratio is improved, and the identification precision can be improved due to the suspension induction electrodes arranged at intervals.
Description
Technical Field
The invention belongs to the technical field of touch control, and particularly relates to a touch control structure, a manufacturing method of the touch control structure, a touch control display screen and electronic equipment.
Background
Along with the continuous improvement of requirements of people on safety, comfort level, energy conservation and environmental protection performance of automobiles, the position of automobile electronic equipment in the automobiles is continuously improved, wherein the vehicle-mounted touch screen is an important carrier for man-machine interaction, and the automobiles are pushed to become the next important mobile intelligent terminal behind the smart phones.
At present, the traditional touch screen equipped for most vehicle types can finish man-machine interaction only after a finger touches the touch screen, and has limitations in many aspects, such as adjusting the sound volume, controlling the temperature of an air conditioner and the like, a user needs to stretch the hand to touch the touch screen, and eyes are stared at the touch screen to confirm whether the finger has correct operation; meanwhile, the space in the vehicle is large, the touch screen is far away from the user, and when the vehicle is used, the body of the user needs to be displaced to a certain extent, so that certain risks exist for driving safety.
Disclosure of Invention
The first objective of the present invention is to provide a touch structure that is convenient to operate.
In order to achieve the first purpose of the invention, the invention provides the following technical scheme:
in a first aspect, the present invention provides a touch structure, including:
the induction electrode layer comprises a touch induction electrode area and a suspension induction electrode area, the suspension induction electrode area comprises a first suspension induction electrode area, the first suspension induction electrode area is positioned on one side of the touch induction electrode area and is close to a first side edge of the induction electrode layer, the touch induction electrode area is at least close to a second side edge of the induction electrode layer, the first side edge and the second side edge are adjacent two sides, the first suspension induction electrode area comprises a first suspension induction electrode, the first suspension induction electrode comprises a plurality of suspension induction electrodes arranged at intervals, the touch induction electrode area comprises a plurality of touch induction electrodes arranged at intervals in parallel, and the touch induction electrodes and the suspension induction electrodes are arranged in an insulated mode; and
and the driving electrode layer is insulated from the sensing electrode layer and comprises a plurality of driving electrodes which are arranged at intervals and in parallel, and the driving electrodes are perpendicular to the touch sensing electrode space.
The touch sensing electrodes are used as sensing lines (namely 2D sensing lines, 2D Rx) in a horizontal coordinate, the driving electrodes are used as driving lines (namely 2D driving lines, 2D Tx) in the horizontal coordinate, and the 2D sensing lines and the 2D driving lines form stacking and routing of a conventional mutual capacitance touch screen, so that a touch function in the horizontal coordinate can be realized; the floating induction electrode is used as an induction line (namely, a 3D induction line and a 3D Rx) of 3D floating touch, the driving electrode is also used as a driving line (namely, a 3D driving line and a 3D Tx) of the 3D floating touch, a stable electric field is formed in the space above the touch structure by the 3D induction line and the 3D driving line after the 3D induction line and the 3D driving line are electrified, the direction of the electric field line is sent out from the 3D driving line, the 3D induction line receives the electric field line, when a conductor (such as a hand) enters the electric field, the distribution of the electric field line at the position of the conductor can be changed, the electric field intensity received by the 3D induction line connected with the position is changed, when the conductor moves in the electricity, the position of the floating touch can be.
The design of the suspension induction electrodes arranged at intervals enables the finger to move from one electrode to the other electrode when moving, and compared with the whole suspension induction electrode, the recognition accuracy can be improved. The scheme can realize the application in the left and right directions, is particularly suitable for the field of vehicle-mounted touch screens, and can be applied to be defined on the lower side edge in a centralized manner, such as switching songs, adjusting the volume of a sound box, controlling the temperature of an air conditioner and the like on the vehicle-mounted touch screen.
In a first possible implementation manner of the first aspect, the floating induction electrode region further includes a second floating induction electrode region, the second floating induction electrode region and the first floating induction electrode region are located on opposite sides of the induction electrode layer, and the second floating induction electrode region is provided with a continuous second floating induction electrode.
The suspension induction electrodes are arranged on the two opposite side edges, so that the application in the left-right direction can be realized, and the up-down sliding and rotating actions can be detected. Because on-vehicle touch-sensitive screen downside uses more, therefore set up the suspension response electrode interval of downside in order improving the detection precision, the suspension response electrode of upside designs into a monoblock electrode in order to reduce electrode lead wire number, saves space.
In a second possible implementation manner of the first aspect, a width of the first floating sensing electrode is greater than a width of the touch sensing electrode.
The wider of suspension response electrode can provide stronger signal to form the area of coverage bigger, the farther electric field of distance, strengthen the effect of suspension touch-control.
In a third possible implementation manner of the first aspect, the first floating sensing electrode includes 2 to 10 floating sensing electrodes, the 2 to 10 floating sensing electrodes extend along the same direction, and the extending direction of the 2 to 10 floating sensing electrodes is parallel to the first side of the sensing electrode layer and perpendicular to the touch sensing electrode.
Through setting up a plurality of looks spaced suspension response electrodes for the electric field of suspension response electrode is by meticulous division, makes position location more accurate.
With reference to the first aspect and a fourth possible implementation manner of the first to third possible implementation manners of the first aspect, the touch structure further includes a first transparent substrate and a second transparent substrate, the driving electrode layer is disposed on the first transparent substrate, the sensing electrode layer is disposed on the second transparent substrate, and a first adhesive layer is disposed between the first transparent substrate and the second transparent substrate.
In a fourth possible implementation manner of the first aspect, the touch sensing electrode further includes a second adhesive layer and a cover plate, the second adhesive layer is stacked on the sensing electrode layer, and a light shielding layer is further disposed between the second adhesive layer and the cover plate and shields the suspended sensing electrode region.
The cover plate is used for protecting the touch structure, and the shading layer is used for shading the suspended induction electrode. Therefore, the three-side narrow frame can be realized by arranging the suspension induction electrodes on one side of the induction electrode layer, and the two-side narrow frame can be realized by arranging the suspension induction electrodes on two opposite sides.
The second objective of the present invention is to provide a method for manufacturing a touch structure, so as to implement a floating touch function.
In a second aspect, the present invention provides a method for manufacturing a touch structure, including the following steps:
providing a first transparent substrate;
manufacturing a driving electrode layer comprising a plurality of driving electrodes which are arranged at intervals in parallel on the first transparent substrate;
coating a first glue layer on the driving electrode layer;
laminating a second transparent substrate on the first adhesive layer;
manufacturing an induction electrode layer on the second transparent substrate, wherein the induction electrode layer comprises a touch induction electrode area and a suspension induction electrode area, the floating induction electrode area comprises a first floating induction electrode area, the first floating induction electrode area is positioned at one side of the touch induction electrode area and close to the first side of the induction electrode layer, the touch sensing electrode area is at least close to a second side edge of the sensing electrode layer, the first side edge and the second side edge are adjacent, the first suspension induction electrode area comprises a first suspension induction electrode which comprises a plurality of suspension induction electrodes arranged at intervals, the touch sensing electrode area comprises a plurality of touch sensing electrodes which are arranged at intervals and in parallel, the touch sensing electrodes and the suspension sensing electrodes are arranged in an insulated mode, and the touch sensing electrodes and the driving electrodes are arranged in a space perpendicular mode.
The suspension induction electrode is manufactured on one side of the induction electrode layer, an electric field is formed by coupling of the driving electrode and the suspension induction electrode, when a conductor (such as a hand) enters the electric field, the distribution of electric field lines at the position of the conductor can be changed, the position of suspension touch can be determined by recording the changing direction and strength of the electric field, and suspension touch is realized.
In a first possible implementation manner of the second aspect, the method further includes the following steps:
coating a second glue layer on the induction electrode layer;
manufacturing a shading layer on the second adhesive layer, wherein the shading layer shades the suspension induction electrode area;
and laminating a cover plate on the second adhesive layer and the shading layer.
Through setting up light shield layer and apron, can shelter from suspension induction electrode, protection touch structure, the touch structure of can also modularizing is convenient for batch production and application.
The third objective of the present invention is to provide a touch display screen.
In a third aspect, the present invention provides a touch display screen, where the touch display screen includes the touch structure described in any of the various implementation methods of the first aspect.
It is a fourth object of the invention to provide an electronic device.
In a fourth aspect, the present invention provides an electronic device, which includes the touch structure described in any of the various implementation methods of the first aspect.
According to the invention, the suspended induction electrode is designed on the first side edge or the two opposite side edges of the induction electrode layer, so that the suspended induction electrode is coupled with the driving electrode to generate an electric field in the surrounding space of the touch structure, and the suspended touch function convenient to control is realized by detecting and positioning the conductor entering the electric field through the electric field. According to the scheme of the invention, three-side or two-side narrow frames can be realized, and the screen occupation ratio is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic plan view of a sensing electrode layer provided in a first embodiment;
fig. 2 is a schematic side view of a touch structure according to a first embodiment;
fig. 3 is a partially exploded view of a touch structure according to a first embodiment;
FIG. 4 is a schematic plan view of a sensing electrode layer provided in a second embodiment;
fig. 5 is a schematic side view of a touch structure according to a second embodiment;
fig. 6 is a partially exploded schematic view of a touch structure according to a second embodiment;
fig. 7 is a schematic view illustrating an electric field generated by the touch structure according to the first embodiment;
FIG. 8 is a schematic diagram of the change in electric field with a finger inserted into the electric field of FIG. 7;
fig. 9 is a schematic view illustrating an electric field generated by the touch structure according to the second embodiment;
FIG. 10 is a schematic diagram of the change in electric field as a finger is inserted into the electric field of FIG. 9.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
It will be understood that when an element is referred to as being "stacked on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," "up," "down," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
A touch display screen can realize 2D touch in a horizontal coordinate and can also realize 3D floating touch so as to adapt to the development of 3D UI design. Meanwhile, the narrow frame is provided, so that the pursuit of people for aesthetic feeling can be achieved. The touch structure provided by the embodiment of the invention can be applied to electronic equipment such as a smart phone, a tablet personal computer and a television to realize the man-machine interaction functions of image display, touch and suspension touch of the electronic equipment, wherein the scheme of three sides and narrow frame is particularly suitable for a vehicle-mounted touch screen.
Referring to fig. 1 to 3, a touch structure according to a first embodiment of the invention includes a first transparent substrate 11, a driving electrode layer 15, a first adhesive layer 18, a second transparent substrate 21, and a sensing electrode layer 25. The sensing electrode layer 25 includes a touch sensing electrode region 250 and a floating sensing electrode region 30, and particularly, the touch sensing electrode region 250 and the floating sensing electrode region 30 are rectangular regions. The suspension induction electrode area 30 includes a first suspension induction electrode area 301, the first suspension induction electrode area 301 is located touch induction electrode area 250 one side and is close to the first side 252 of induction electrode layer 25, touch induction electrode area 250 is close to at least second side 253 department on the induction electrode layer 25, first side 252 and second side 253 are adjacent both sides, first suspension induction electrode area 301 includes a first suspension induction electrode 31, a first suspension induction electrode 31 includes the suspension induction electrode 311, 312, 313, 314 that a plurality of intervals set up, touch induction electrode area 250 includes the touch induction electrode 251 of a plurality of intervals and parallel arrangement, touch induction electrode 251 with a first suspension induction electrode 31 mutual insulation setting. The driving electrode layer 15 includes a plurality of driving electrodes 151 disposed in parallel at intervals, the driving electrodes 15 are disposed corresponding to the touch sensing electrode region 250, the driving electrodes 151 are insulated from the touch sensing electrodes 251, and the driving electrodes 151 are disposed perpendicular to the touch sensing electrodes 251. The first floating sensing electrode 31 is coupled with the driving electrode 151 so as to generate an electric field in the surrounding space of the touch structure, and the electric field detects and locates a conductor entering the electric field.
In the present embodiment, the first transparent substrate 11 and the second transparent substrate 21 may be made of PET (polyethylene terephthalate), COP (cycloolefin copolymer), or glass. In other embodiments, the second transparent substrate 21 may not be provided. The driving electrode layer 15 is made of ITO (indium tin oxide) material, and the ITO may be patterned through steps of coating, coating a photoresist, exposing, developing, etching, stripping, and the like, to obtain the driving electrode 151. The material of the driving electrode can also be selected from graphene, silver paste or other conductive metal materials, and is not limited to ITO. The first Adhesive layer 18 is used to adhere the driving electrode layer 15 and the second transparent substrate 21 or the sensing electrode layer 25 (when the second transparent substrate 21 is not disposed), and the first Adhesive layer 18 may be an OCA (optical clear Adhesive) Adhesive. The sensing electrode layer 25 is similar to the driving electrode layer 15, and is made of ITO (indium tin oxide) material, and the touch sensing electrode 251 is obtained after patterning, which is the same as the process for making the driving electrode layer 15. In this embodiment, the lower side of the sensing electrode layer 25 is provided with an extra manufacturing space as a floating sensing electrode area 30 for manufacturing the first floating sensing electrode 31, after the patterning of the touch sensing electrode 251 is completed, photosensitive silver paste can be printed in the manufacturing space, and the first floating sensing electrode 31 is formed after exposure and development. In another embodiment, after the ITO or silver paste is plated on the entire surface of the second transparent substrate 25, when the touch sensing electrode 251 is patterned, the first floating sensing electrode 31 may be patterned together, and the touch sensing electrode 251 and the first floating sensing electrode 31 are obtained through one-time patterning, so that the process is reduced and the cost is saved. Of course, the touch sensing electrode 251 and the first floating sensing electrode 31 may also be made of graphene or other conductive metal materials, not limited to ITO or silver paste. As can be seen from the above description, the first floating sensing electrode 31 and the touch sensing electrode 251 are located in the same layer structure, and a coupling capacitance may be formed between the first floating sensing electrode 31 and the driving electrode 151, so that the driving electrode 151 may drive the first floating sensing electrode 31 to form an electric field.
In this embodiment, the width of the first floating sensing electrode 31 is greater than the width of the touch sensing electrode 251. Specifically, the width of the floating sensing electrode is 4mm to 12mm, preferably 5mm to 10mm, and more preferably 7mm to 9mm, while the width of the general touch sensing electrode 251 is micrometer (μm) or even nanometer (nm) in order to avoid the touch sensing electrode 251 being seen when displaying a picture on the display screen. And the wider suspension induction electrode can emit stronger signals, so that an electric field with larger coverage area and longer distance is formed, and the effect of suspension touch control is enhanced.
Referring to fig. 1 to fig. 3, in the present embodiment, the plurality of first floating sensing electrodes 31 disposed at intervals includes 2 to 10 floating sensing electrodes, the 2 to 10 floating sensing electrodes extend along the same direction, and the extending direction of the 2 to 10 floating sensing electrodes is parallel to the first side 252 of the sensing electrode layer and perpendicular to the touch sensing electrode 251.
Specifically, as shown in fig. 1, for convenience of description, the floating sensing electrode 31 includes 4 floating sensing electrodes: the a electrode 311, the B electrode 312, the C electrode 313 and the D electrode 314, in other embodiments, the floating sensing electrode 31 may further include other numbers of electrodes, which are configured according to the size of the touch screen. Including 2 ~ 10 suspension response electrodes through setting up suspension response electrode for the electric field that suspension response electrode produced is by meticulous division, makes position location more accurate.
In the present embodiment, the first floating sensing electrode 31 has a distance of at least 3mm from the closest touch sensing electrode 251 on the sensing electrode layer 25 to ensure insulation from each other. The invention does not limit the specific routing form of the driving electrode 151 and the touch sensing electrode 251, as long as a coupling capacitance is formed between the driving electrode 151 and the touch sensing electrode 251, so that a touch effect can be achieved.
In the present embodiment, the routing arrangement of the driving IC and the signal lines connecting the driving IC and the first floating sensing electrode 31, the touch sensing electrode 251 and the driving electrode 151 is not limited, and may be arranged according to actual situations. In order to facilitate the modular assembly of the touch structure, the distance from the first floating sensing electrode 31 to the edge of the touch structure is not less than 0.6mm, so as to facilitate the installation of necessary accessories such as a frame.
With reference to fig. 1 to fig. 3, the touch structure of the present embodiment may further include a second transparent substrate 28 and a cover plate 50, which are stacked, wherein the second transparent substrate 28 is stacked on the sensing electrode layer 25, a light shielding layer (shown by reference numeral 41 in fig. 2 and fig. 3) is further disposed between the second adhesive layer 28 and the cover plate 50, and the light shielding layer 41 shields the first floating sensing electrode area 301.
The cover plate 50 can be a glass cover plate or an injection molding cover plate, when the glass cover plate is adopted, the thickness of the cover plate 50 is 0.7 mm-1.1 mm, when the injection molding cover plate is adopted, the thickness of the cover plate 50 is 1.8 mm-2.2 mm, and the cover plate 50 is used for protecting a touch structure. The light shielding layer can be a black photoresist, ink or black matrix layer, and the suspended sensing electrode 31 is generally large in size, so that the appearance is prevented from being visible, and the light shielding layer is arranged for shielding.
The cover plate is used for protecting the touch structure, and the shading layer is used for shading the suspended induction electrode. Therefore, the suspension induction electrode is arranged on one side of the induction electrode layer, so that a three-side narrow frame or no frame can be realized, and the screen occupation ratio is improved.
Referring to fig. 7 and 8, in the present embodiment, when the touch structure operates, the touch sensing electrode 251 is used as a sensing line (i.e., a 2D sensing line, 2D Rx) in a horizontal coordinate, the driving electrode 151 is used as a driving line (i.e., a 2D driving line, 2D Tx) in the horizontal coordinate, and the 2D sensing line and the 2D driving line form a stacked trace of a conventional mutual capacitive touch screen, so as to implement a touch function in the horizontal coordinate. The first floating sensing electrode 31 serves as a sensing line (i.e., 3D sensing line, 3D Rx) for 3D floating touch, the driving electrode 151 also serves as a driving line (i.e., 3D driving line, 3D Tx) for 3D floating touch, the 3D sensing line and the 3D driving line form a stable electric field in the space above the touch structure after being powered on, and the direction of the electric field line (e.g., the direction of the arrow in fig. 7 and 8) starts from the 3D driving line and is received by the 3D sensing line on one side. When a conductor (for example, a hand) enters the electric field (as shown in fig. 8), the distribution of electric field lines at the position of the conductor is changed, so as to change the electric field intensity received by the 3D sensing lines connected to the position, and when the conductor moves in the electric field, the floating touch can be realized by recording the changed direction and intensity of the electric field.
The design of the suspension induction electrodes arranged at intervals enables the finger to move from one electrode to the other electrode when moving, and compared with the whole suspension induction electrode, the recognition accuracy can be improved. The implementation mode can realize the application in the left and right directions, is particularly suitable for the field in consideration of the particularity of the vehicle-mounted touch screen, and intensively defines the application on one side, such as switching songs on the vehicle-mounted touch screen, adjusting the volume of a sound box, controlling the temperature of an air conditioner and the like. Not only is convenient to control, but also can realize a three-side narrow frame.
In the second embodiment of the present invention, a touch structure is provided, and for brevity of description, the same features as those of the first embodiment are not repeated. Referring to fig. 4 to 6, the floating induction electrode region 30 includes a first floating induction electrode region 301 and a second floating induction electrode region 302, and the second floating induction electrode region 302 and the first floating induction electrode region 301 are located at opposite sides of the induction electrode layer 25. The first floating induction electrode region 301 includes a first floating induction electrode 31, the first floating induction electrode 31 includes a plurality of floating induction electrodes 311, 312, 313, 314 arranged at intervals, and the second floating induction electrode region 302 is provided with a continuous second floating induction electrode 32. The extending direction of the second floating sensing electrode 32 is parallel to the first floating sensing electrode 31 and perpendicular to the touch sensing electrode 251. The widths of the first suspension induction electrode 31 and the second suspension induction electrode 32 which are oppositely arranged can be the same, so that the electric field is regularly distributed, and the strength of each direction of the electric field tends to be consistent, thereby better realizing the suspension touch effect.
Referring to fig. 4 to 6, as mentioned above, a light shielding layer is disposed in the touch structure, specifically, in the present embodiment, the light shielding layer includes a first light shielding structure 41 and a second light shielding structure 42, the first light shielding structure 41 is disposed at a position corresponding to the first floating sensing electrode region 301, the second light shielding structure 42 is disposed at a position corresponding to the second floating sensing electrode region 302, one end of the first light shielding structure 41 extends to an edge of the touch structure, and the other end extends to an edge of the sensing electrode layer 25 to completely shield the first floating sensing electrode 31. One end of the second light shielding structure 42 extends to the edge of the touch structure, and the other end extends to the edge of the sensing electrode layer 25, so as to completely shield the second floating sensing electrode 32. Other corresponding features in this embodiment are the same as in the first embodiment (see fig. 1 to 3).
Referring to fig. 9 and 10, in the present embodiment, the touch sensing electrode 251 is used as a sensing line (i.e., a 2D sensing line, 2D Rx) in a horizontal coordinate, the driving electrode 151 is used as a driving line (i.e., a 2D driving line, 2D Tx) in the horizontal coordinate, and the 2D sensing line and the 2D driving line form a stacked trace of a conventional mutual capacitive touch screen, so as to implement a touch function in the horizontal coordinate. The floating sensing electrode 30 is used as a sensing line (i.e. a 3D sensing line, 3D Rx) for 3D floating touch, the driving electrode 151 is also used as a driving line (i.e. a 3D driving line, 3D Tx) for 3D floating touch, the 3D sensing line and the 3D driving line form a stable electric field in the space above the touch structure after being powered on, and the direction of the electric field line (e.g. the arrow direction in fig. 9 and 10) starts from the 3D driving line and is received by the 3D sensing lines on two opposite sides. When a conductor (for example, a hand) enters the electric field (as shown in fig. 9), the distribution of electric field lines at the position of the conductor is changed, so as to change the electric field intensity received by the 3D sensing lines connected to the position, and when the conductor moves in the electric field, the floating touch can be realized by recording the changed direction and intensity of the electric field.
Two opposite sides are provided with suspension induction electrodes, so that a bilateral narrow frame can be realized. Meanwhile, the scheme can not only realize the application in the left and right directions, but also detect the up-down sliding and rotating actions. Use more fields at the lower frame, like on-vehicle touch-sensitive screen, therefore set up the suspension response electrode interval of lower frame in order to improve and detect the precision, the suspension response electrode on the upper side designs into a monoblock electrode in order to reduce electrode lead wire number, reduces the frame, saves space.
Referring to fig. 1 to 3, an embodiment of the present invention further provides a method for manufacturing a touch structure in a first embodiment, including the following steps:
providing a first transparent substrate 11;
forming a driving electrode layer 15 including a plurality of driving electrodes 151 disposed in parallel at intervals on the first transparent substrate 11;
coating a first glue layer 18 on the driving electrode layer 15;
laminating a second transparent substrate 21 on the first adhesive layer 18;
manufacturing an induction electrode layer 25 on the second transparent substrate 21, wherein the induction electrode layer 25 includes a touch induction electrode region 250 and a suspension induction electrode region 30, the suspension induction electrode region 30 includes a first suspension induction electrode region 301, the first suspension induction electrode region 301 is located on one side of the touch induction electrode region 250 and is close to a first side 252 of the induction electrode layer 25, the touch induction electrode region 250 is at least close to a second side 253 of the induction electrode layer 25, the first side 252 and the second side 253 are adjacent, the first suspension induction electrode region 301 includes a first suspension induction electrode 31, the first suspension induction electrode 31 includes a plurality of suspension induction electrodes 311, 312, 313 and 314 arranged at intervals, the touch induction electrode region 250 includes a plurality of touch induction electrodes 251 arranged at intervals and in parallel, and the touch induction electrode 251 and the first suspension induction electrode 31 are arranged in an insulated manner, the touch sensing electrode 251 and the driving electrode 151 are insulated from each other and disposed vertically in space.
In this embodiment, the first floating sensing electrode 31 is formed on the sensing electrode layer 25, an electric field is formed by coupling the driving electrode 151 and the floating sensing electrode 31, when a conductor (e.g., a hand) enters the electric field, the distribution of electric field lines at the position of the conductor is changed, and the position of the floating touch can be determined by recording the direction and strength of the change of the electric field, so as to realize the floating touch.
In an embodiment, please continue to refer to fig. 1 to fig. 3, further comprising the following steps:
coating a second glue layer 28 on the induction electrode layer 25;
a shading layer 41 is manufactured on the second adhesive layer 28, and the shading layer 41 shades the suspension induction electrode area 30;
a cover plate 50 is laminated on the second adhesive layer 28 and the light-shielding layer 41.
By arranging the light shielding layer 41 and the cover plate 50, the floating induction electrode 31 can be shielded, the touch structure can be protected, the touch structure can be modularized, and batch production and application are facilitated.
An embodiment of the present invention further includes a touch display screen including the touch structure according to the first embodiment or the second embodiment.
An embodiment of the present invention further includes an electronic device including the touch structure according to the first embodiment or the second embodiment.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A touch structure, comprising:
the induction electrode layer comprises a touch induction electrode area and a suspension induction electrode area, the suspension induction electrode area comprises a first suspension induction electrode area, the first suspension induction electrode area is positioned on one side of the touch induction electrode area and is close to a first side edge of the induction electrode layer, the touch induction electrode area is at least close to a second side edge of the induction electrode layer, the first side edge and the second side edge are adjacent two sides, the first suspension induction electrode area comprises a first suspension induction electrode, the first suspension induction electrode comprises a plurality of suspension induction electrodes arranged at intervals, the touch induction electrode area comprises a plurality of touch induction electrodes arranged at intervals in parallel, and the touch induction electrodes and the suspension induction electrodes are arranged in an insulated mode; and
and the driving electrode layer is insulated from the sensing electrode layer and comprises a plurality of driving electrodes which are arranged at intervals and in parallel, and the driving electrodes are perpendicular to the touch sensing electrode space.
2. The touch structure of claim 1, wherein the floating sense electrode region further comprises a second floating sense electrode region, the second floating sense electrode region and the first floating sense electrode region being located at opposite sides of the sense electrode layer, the second floating sense electrode region having a continuous second floating sense electrode.
3. The touch structure of claim 1, wherein the width of the first floating sensing electrode is greater than the width of the touch sensing electrode.
4. The touch structure of claim 1, wherein the first floating sensing electrode comprises 2 to 10 floating sensing electrodes, the 2 to 10 floating sensing electrodes extend along a same direction, and the extending direction of the 2 to 10 floating sensing electrodes is parallel to the first side of the sensing electrode layer and perpendicular to the touch sensing electrode.
5. The touch structure of any one of claims 1 to 4, further comprising a first transparent substrate and a second transparent substrate, wherein the driving electrode layer is disposed on the first transparent substrate, the sensing electrode layer is disposed on the second transparent substrate, and a first adhesive layer is disposed between the first transparent substrate and the second transparent substrate.
6. The touch structure of claim 5, further comprising a second adhesive layer and a cover plate, wherein the second adhesive layer is stacked on the sensing electrode layer, and a light shielding layer is further disposed between the second adhesive layer and the cover plate and shields the floating sensing electrode region.
7. A manufacturing method of a touch structure is characterized by comprising the following steps:
providing a first transparent substrate;
manufacturing a driving electrode layer comprising a plurality of driving electrodes which are arranged at intervals in parallel on the first transparent substrate;
coating a first glue layer on the driving electrode layer;
laminating a second transparent substrate on the first adhesive layer;
manufacturing an induction electrode layer on the second transparent substrate, wherein the induction electrode layer comprises a touch induction electrode area and a suspension induction electrode area, the floating induction electrode area comprises a first floating induction electrode area, the first floating induction electrode area is positioned at one side of the touch induction electrode area and close to the first side of the induction electrode layer, the touch sensing electrode area is at least close to a second side edge of the sensing electrode layer, the first side edge and the second side edge are adjacent, the first suspension induction electrode area comprises a first suspension induction electrode which comprises a plurality of suspension induction electrodes arranged at intervals, the touch sensing electrode area comprises a plurality of touch sensing electrodes which are arranged at intervals and in parallel, the touch sensing electrodes and the suspension sensing electrodes are arranged in an insulated mode, and the touch sensing electrodes and the driving electrodes are arranged in a space perpendicular mode.
8. The method for manufacturing a touch structure according to claim 7, further comprising the steps of:
coating a second glue layer on the induction electrode layer;
manufacturing a shading layer on the second adhesive layer, wherein the shading layer shades the suspension induction electrode area;
and laminating a cover plate on the second adhesive layer and the shading layer.
9. A touch display screen, comprising the touch structure of any one of claims 1 to 6.
10. An electronic device comprising the touch structure of any one of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810785397.8A CN110727366B (en) | 2018-07-17 | Touch structure, manufacturing method of touch structure, touch display screen and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810785397.8A CN110727366B (en) | 2018-07-17 | Touch structure, manufacturing method of touch structure, touch display screen and electronic equipment |
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| CN110727366A true CN110727366A (en) | 2020-01-24 |
| CN110727366B CN110727366B (en) | 2024-04-26 |
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