CN112860118B - Touch screen for projection touch control and processing technology thereof - Google Patents
Touch screen for projection touch control and processing technology thereof Download PDFInfo
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- CN112860118B CN112860118B CN202110253253.XA CN202110253253A CN112860118B CN 112860118 B CN112860118 B CN 112860118B CN 202110253253 A CN202110253253 A CN 202110253253A CN 112860118 B CN112860118 B CN 112860118B
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- 238000005516 engineering process Methods 0.000 title claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 22
- 230000006698 induction Effects 0.000 claims abstract description 17
- 239000010410 layer Substances 0.000 claims description 219
- 239000011521 glass Substances 0.000 claims description 23
- 239000012790 adhesive layer Substances 0.000 claims description 19
- 239000005341 toughened glass Substances 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 12
- 239000000853 adhesive Substances 0.000 claims description 11
- 230000001070 adhesive effect Effects 0.000 claims description 11
- 230000003678 scratch resistant effect Effects 0.000 claims description 11
- 239000002313 adhesive film Substances 0.000 claims description 10
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 9
- 239000004917 carbon fiber Substances 0.000 claims description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 9
- 238000005530 etching Methods 0.000 claims description 7
- 229920006332 epoxy adhesive Polymers 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 6
- 229920002635 polyurethane Polymers 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000005496 tempering Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 230000001965 increasing effect Effects 0.000 description 9
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 7
- 229910052709 silver Inorganic materials 0.000 description 7
- 239000004332 silver Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000001939 inductive effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
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- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 238000007731 hot pressing Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
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- 238000003672 processing method Methods 0.000 description 1
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Classifications
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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
- G06F3/0412—Digitisers structurally integrated in a display
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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
- G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means
Abstract
The invention discloses a touch screen for projection touch control and a processing technology thereof, comprising a touch screen body, wherein the touch screen body comprises a wear-resistant layer, a touch sensing layer, a projection display layer and a reinforcing layer, the inner side of the wear-resistant layer is bonded with the outer side of the touch sensing layer, the inner side of the touch sensing layer is bonded with the outer side of the projection display layer, and the inner side of the projection display layer is bonded with the outer side of the reinforcing layer; the touch sensing layer comprises a first fixed layer arranged on the outer side of the projection display layer, a magnetic sensing layer used for forming an induction magnetic field is arranged on the inner side of the first fixed layer, a plurality of first salient points are arranged on the magnetic sensing layer in an array mode, an insulating layer is arranged on the inner side of the magnetic sensing layer, a second fixed layer is arranged on the inner side of the insulating layer, and a second salient point used for carrying out charge exchange with the first salient point to form a reinforced induction magnetic field and a conductive layer are arranged on the outer side of the second fixed layer. The invention is a touch screen with high strength, abrasion resistance and sensitivity not affected by the screen size.
Description
Technical Field
The invention mainly relates to the technical field of touch screens, in particular to a touch screen for projection touch control and a processing technology thereof.
Background
The touch screen is an inductive liquid crystal display device capable of receiving input signals such as contacts.
According to a touch screen and a processing method thereof provided by patent document with application number of CN201610624210.7, the touch screen comprises a substrate subjected to coil material shrinkage and blackening treatment; covering the surface of the darkened base material with photosensitive silver paste with consistent thickness, and performing pre-baking treatment; exposing the photosensitive silver paste through a photomask containing the patterns of the functional area lines and the driving lines to form an exposure silver paste integrated pattern; cleaning the exposed substrate, fixing the exposed silver paste integrated pattern, and baking the pattern; and (3) performing insulation printing treatment on the surface of the exposed silver paste integrated pattern, and attaching a protective film. The exposure silver paste integrated pattern of the product comprises the functional area lines and the peripheral drive lines, and the functional area lines and the drive lines do not need to be independently manufactured, so that the process flow is reduced, the cost is reduced and the production efficiency is improved. The thickness of the functional area line is consistent with that of the driving line, so that the problem of bubbles between the sensing piece and the lens is avoided, and the product yield is improved; the photosensitive silver paste is used for replacing ITO, so that low sheet resistance and better flexibility are realized.
The products in the above patent have reduced process flows, reduced costs and improved production efficiency, but when the display screen is manufactured in an increased size, there is a possibility that the touch sensing sensitivity of the display screen becomes low.
Disclosure of Invention
The invention mainly provides a touch screen for projection touch control and a processing technology thereof, which are used for solving the technical problems in the background technology.
The technical scheme adopted for solving the technical problems is as follows:
the touch screen comprises a touch screen body, wherein the touch screen body comprises a wear-resistant layer, a touch sensing layer, a projection display layer and a reinforcing layer, the inner side of the wear-resistant layer is bonded with the outer side of the touch sensing layer, the inner side of the touch sensing layer is bonded with the outer side of the projection display layer, and the inner side of the projection display layer is bonded with the outer side of the reinforcing layer;
the touch sensing layer comprises a first fixed layer arranged on the outer side of the projection display layer, a magnetic sensing layer used for forming an induction magnetic field is arranged on the inner side of the first fixed layer, a plurality of first salient points are arranged on the magnetic sensing layer in an array mode, an insulating layer is arranged on the inner side of the magnetic sensing layer, a second fixed layer is arranged on the inner side of the insulating layer, and a second salient point used for carrying out charge exchange with the first salient point to form a reinforced induction magnetic field and a conductive layer are arranged on the outer side of the second fixed layer.
Preferably, the inner side of the wear-resistant layer is adhered with a first adhesive layer, the outer side of the wear-resistant layer is coated with a scratch-resistant layer, the first adhesive layer is adhered with a touch sensing layer, the wear-resistant layer is made of toughened glass, the scratch-resistant layer is KN22, and the first adhesive layer is light immobilized glue. In this preferred embodiment, the wearing layer can provide the protection to touch-sensitive layer, and the wearing layer is toughened glass, and intensity is high when the printing opacity is effectual, and the scratch resistant layer effectively prevents that the scratch from appearing on wearing layer surface from influencing the projection effect.
Preferably, the projection display layer comprises a display inner screen, the outer wall of the display inner screen is connected with a second bonding layer in a side joint mode, the second bonding layer is bonded with the inner side of the touch sensing layer, and the second bonding layer is polyurethane adhesive. In the preferred embodiment, the projection image is facilitated to be displayed by the projection display layer.
Preferably, the outer side of the reinforcing layer is bonded with a third bonding layer, the third bonding layer is bonded with the inner side of the projection display layer, the reinforcing layer is a carbon fiber plate, and the third bonding layer is an epoxy adhesive. In the preferred embodiment, the strength of the touch screen body is facilitated to be increased by the reinforcing layer.
Preferably, the inner side of the first fixing layer is adhered with a fourth adhesive layer, the fourth adhesive layer is adhered with the outer side of the magnetic induction layer, the first fixing layer is a glass plate, and the fourth adhesive layer is OCA optical cement. In the present preferred embodiment, stable fixation of the magnetically susceptible layer is facilitated by the first fixation layer.
Preferably, the magnetic induction layer comprises a flexible circuit board, two first electrodes are connected to two sides of the surface of the flexible circuit board, a plurality of second electrodes are arranged between the two first electrodes, the surface of the flexible circuit board is divided into a plurality of square grids by the plurality of second electrodes, and the first protruding points are arranged at the central positions in the square grids. In the preferred embodiment, the magnetic induction layer is used for facilitating formation of an induced magnetic field, so that the touch position of the finger of the user can be positioned.
Preferably, the insulating layer is formed on the inner side of the flexible circuit board by hot press molding, and the insulating layer is an anisotropic conductive adhesive film. In the preferred embodiment, the anisotropic conductive film is a translucent polymer material having three properties of adhesion, conductivity and insulation, and is characterized by having conductivity in the film thickness direction but not having conductivity in the surface direction.
Preferably, the second fixing layer is adhered to the insulating layer, and the second fixing layer is sensor glass. In the preferred embodiment, the second bump at the bottom of the second fixing layer may be connected to the first bump in the film thickness direction of the anisotropic conductive film, so as to facilitate determining the position of the cell prescribed by the finger of the user and facilitate increasing the charge amount at the corresponding position.
Preferably, the conductive layer is adhered to the second fixing layer, and the conductive layer is an ITO film. In the preferred embodiment, charge flow between the induced magnetic field and the individual user is facilitated by the ITO film.
According to the technical scheme of the touch screen for projection touch, a processing technology of the touch screen for projection touch is further provided, and the processing technology comprises the following steps:
firstly, preparing a touch sensing layer, namely taking raw materials, bonding an ITO film to the ITO film for standby, etching conductive circuits of a first electrode and a second electrode on the flexible circuit board by laser, etching a first bump at the central position in a square grid formed by a plurality of second electrodes, wherein the laser output power is 6w, the laser scanning speed is 700mm/min, bonding the flexible circuit board after laser etching to the glass board by OCA optical adhesive, bonding pressure is 5kg, forming the anisotropic conductive adhesive film on the flexible circuit board by adopting a hot press forming mode, and bonding the sensor glass to the anisotropic conductive adhesive film to complete the preparation of the touch sensing layer;
secondly, assembling the projection display layer, taking raw materials, displaying the inner screen, bonding the inner screen to the glass plate through polyurethane adhesive,
thirdly, assembling the reinforcing layer, namely taking raw materials and a carbon fiber plate, bonding the carbon fiber plate and the display inner screen through an epoxy adhesive,
fourthly, assembling the wear-resistant layer, namely taking raw materials, tempering glass, coating KN22 on the surface of the tempered glass, drying with hot air, and finishing processing by adhering the tempered glass and the sensor glass through light immobilization glue.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the wear-resistant layer can provide protection for the touch sensing layer, the wear-resistant layer is toughened glass, the light transmission effect is good, the strength is high, the scratch-resistant layer effectively prevents scratches on the surface of the wear-resistant layer from affecting the projection effect, the projection image is conveniently displayed through the projection display layer, the strength of the touch screen body is conveniently increased through the reinforcing layer, when the touch screen is used by a user, the user's finger touches any position of a working interface of the touch screen body, at the moment, the second salient point at the bottom of the second fixing layer can be connected with the first salient point through the thickness direction of the anisotropic conductive adhesive film to form a loop, the position of the grid prescribed by the user's finger can be judged through the controller, the inductive charge quantity of the area can be increased through the second electrode, the inductive charge flows out through the first electrode, the controller can realize accurate positioning of the finger by calculating the charge quantity flowing through the first electrode, the accurate positioning of the finger is realized by combining with the square position, the operation of the user is sensitively judged, the positioning is fast, and the positioning judgment is little affected by the size of the touch screen body.
The invention will be explained in detail below with reference to the drawings and specific embodiments.
Drawings
FIG. 1 is an isometric view of the overall structure of the present invention;
FIG. 2 is an isometric view of a touch sensitive layer structure of the present invention;
FIG. 3 is an isometric view of a second fixed layer structure of the present invention;
FIG. 4 is an isometric view of a flexible circuit board structure according to the present invention;
FIG. 5 is a cross-sectional view of the overall structure of the present invention;
fig. 6 is a cross-sectional view of a touch sensitive layer structure of the present invention.
Description of the drawings: 1. a touch screen body; 11. a wear-resistant layer; 111. a first adhesive layer; 112. a scratch resistant layer; 12. a touch sensing layer; 121. a first fixed layer; 1211. a fourth adhesive layer; 122. a magnetic induction layer; 1221. a first bump; 1222. a flexible circuit board; 1223. a first electrode; 1224. a second electrode; 1225. square grids; 123. an insulating layer; 124. a second fixed layer; 125. a conductive layer; 1241. a second bump; 13. a projection display layer; 131. displaying an inner screen; 132. a second adhesive layer; 14. a reinforcing layer; 141. and a third adhesive layer.
Detailed Description
In order that the invention may be more fully understood, a more particular description of the invention will be rendered by reference to the appended drawings, in which several embodiments of the invention are illustrated, but which may be embodied in different forms and are not limited to the embodiments described herein, which are, on the contrary, provided to provide a more thorough and complete disclosure of the invention.
It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to the other element, it may be directly connected to the other element or intervening elements may also be present, the terms "vertical", "horizontal", "left", "right" and the like are used herein for the purpose of illustration only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly connected to one of ordinary skill in the art to which this invention belongs, and the knowledge of terms used in the description of this invention herein for the purpose of describing particular embodiments is not intended to limit the invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 and 5, in a preferred embodiment of the present invention, a touch screen for projection touch control includes a touch screen body 1, where the touch screen body 1 includes a wear-resistant layer 11, a touch-sensitive layer 12, a projection display layer 13, and a reinforcing layer 14, the inner side of the wear-resistant layer 11 is bonded to the outer side of the touch-sensitive layer 12, the inner side of the wear-resistant layer 11 is bonded to a first bonding layer 111, the outer side is coated with a scratch-resistant layer 112, the first bonding layer 111 is bonded to the touch-sensitive layer 12, the wear-resistant layer 11 is toughened glass, the scratch-resistant layer 112 is KN22, the first bonding layer 111 is a photo-immobilized glue,
in this embodiment, the present invention is described in detail below,
can provide the protection to touch-sensitive layer 12 through wearing layer 11, wearing layer 11 is toughened glass, and intensity is high when printing opacity is effectual, and scratch resistant layer 112 effectively prevents that the scratch from appearing on wearing layer 11 surface from influencing the projection effect.
Referring to fig. 1 and 5, in another preferred embodiment of the present invention, the inner side of the touch sensing layer 12 is adhered to the outer side of the projection display layer 13, and the inner side of the projection display layer 13 is adhered to the outer side of the reinforcing layer 14; the projection display layer 13 comprises a display inner screen 131, the outer wall of the display inner screen 131 is connected with a second bonding layer 132 in a side joint manner, the second bonding layer 132 is bonded with the inner side of the touch sensing layer 12, the second bonding layer 132 is polyurethane adhesive, the outer side of the reinforcing layer 14 is bonded with a third bonding layer 141, the third bonding layer 141 is bonded with the inner side of the projection display layer 13, the reinforcing layer 14 is a carbon fiber board, the third bonding layer 141 is epoxy adhesive,
in this embodiment, the present invention is described in detail below,
the projection display layer 13 is used for displaying the projection image, and the reinforcing layer 14 is used for increasing the strength of the touch screen body 1.
Referring to fig. 1-6, in another preferred embodiment of the present invention, the touch sensing layer 12 includes a first fixing layer 121 disposed on the outer side of the projection display layer 13, a magnetic sensing layer 122 for forming a sensing magnetic field is disposed on the inner side of the first fixing layer 121, a plurality of first bumps 1221 are disposed on the upper array of the magnetic sensing layer 122, an insulating layer 123 is disposed on the inner side of the magnetic sensing layer 122, a second fixing layer 124 is disposed on the inner side of the insulating layer 123, a second bump 1241 for performing charge exchange with the first bumps 1221 to form a reinforced sensing magnetic field is disposed on the outer side of the second fixing layer 124, a conductive layer 125 is disposed on the inner side of the second fixing layer 121, a fourth adhesive layer 1211 is adhered on the inner side of the first fixing layer 121, the fourth adhesive layer 1211 is adhered on the outer side of the magnetic sensing layer 122, the first fixing layer 121 is a glass plate, the fourth adhesive layer 1211 is OCA optical adhesive, the magnetic induction layer 122 includes a flexible circuit board 1222, two first electrodes 1223 are connected to two sides of the surface of the flexible circuit board 1222, a plurality of second electrodes 1224 are disposed between the two first electrodes 1223, the surface of the flexible circuit board 1222 is divided into a plurality of square grids 1225 by the plurality of second electrodes 1224, the first bumps 1221 are disposed at the center position in the square grids 1225, the insulating layer 123 is formed inside the flexible circuit board 1222 by hot pressing, the insulating layer 123 is an anisotropic conductive adhesive film, the second fixing layer 124 is bonded to the insulating layer 123, the second fixing layer 124 is sensor glass, the conductive layer 125 is bonded to the second fixing layer 124, and the conductive layer 125 is an ITO film.
In this embodiment, the present invention is described in detail below,
when the touch screen is used by a user, the user touches any position of the working interface of the touch screen body 1, at this moment, the second salient points 1241 at the bottom of the second fixing layer 124 can be connected with the first salient points 1221 in the film thickness direction of the anisotropic conductive adhesive film to form a loop, the position of the lattice 1225 prescribed by the user can be judged through the controller, the induction charge quantity of the area can be increased through the second electrode 1224, the induction charge flows out through the first electrode 1223, and the controller can calculate the charge quantity flowing through the first electrode 1223 and combine the positions of the lattices 1225 to realize accurate positioning of the finger, so that the user operation is facilitated.
According to the above embodiment, there is also provided a processing technology of a touch screen for projection touch control, including the following steps:
firstly, preparing a touch sensing layer, namely taking raw materials, bonding an ITO film to the ITO film for standby, etching conductive circuits of a first electrode and a second electrode on the flexible circuit board by laser, etching a first bump at the central position in a square grid formed by a plurality of second electrodes, wherein the laser output power is 6w, the laser scanning speed is 700mm/min, bonding the flexible circuit board after laser etching to the glass board by OCA optical adhesive, bonding pressure is 5kg, forming the anisotropic conductive adhesive film on the flexible circuit board by adopting a hot press forming mode, and bonding the sensor glass to the anisotropic conductive adhesive film to complete the preparation of the touch sensing layer;
secondly, assembling the projection display layer, taking raw materials, displaying the inner screen, bonding the inner screen to the glass plate through polyurethane adhesive,
thirdly, assembling the reinforcing layer, namely taking raw materials and a carbon fiber plate, bonding the carbon fiber plate and the display inner screen through an epoxy adhesive,
fourthly, assembling the wear-resistant layer, namely taking raw materials, tempering glass, coating KN22 on the surface of the tempered glass, drying with hot air, and finishing processing by adhering the tempered glass and the sensor glass through light immobilization glue.
The specific flow of the invention is as follows:
the controller model is GFX4-IR-30-0-2-0-P-U05".
The wear-resistant layer 11 can protect the touch sensing layer 12, the wear-resistant layer 11 is made of toughened glass, the light transmission effect is good, the strength is high, and the scratch-resistant layer 112 effectively prevents scratches on the surface of the wear-resistant layer 11 from affecting the projection effect;
the projection display layer 13 is convenient for displaying the projection image, and the reinforcing layer 14 is convenient for increasing the strength of the touch screen body 1;
when the touch screen is used by a user, the user touches any position of the working interface of the touch screen body 1, at this moment, the second salient points 1241 at the bottom of the second fixing layer 124 can be connected with the first salient points 1221 in the film thickness direction of the anisotropic conductive adhesive film to form a loop, the position of the lattice 1225 prescribed by the user can be judged through the controller, the induction charge quantity of the area can be increased through the second electrode 1224, the induction charge flows out through the first electrode 1223, and the controller can calculate the charge quantity flowing through the first electrode 1223 and combine the positions of the lattices 1225 to realize accurate positioning of the finger, so that the user operation is facilitated.
While the invention has been described above with reference to the accompanying drawings, it will be apparent that the invention is not limited to the embodiments described above, but is intended to be within the scope of the invention, as long as such insubstantial modifications are made by the method concepts and technical solutions of the invention, or the concepts and technical solutions of the invention are applied directly to other occasions without any modifications.
Claims (9)
1. The touch screen for projection touch control comprises a touch screen body (1), and is characterized in that the touch screen body (1) comprises a wear-resistant layer (11), a touch sensing layer (12), a projection display layer (13) and a reinforcing layer (14), wherein the outer side of the touch sensing layer (12) is bonded on the inner side of the wear-resistant layer (11), the outer side of the projection display layer (13) is bonded on the inner side of the touch sensing layer (12), and the outer side of the reinforcing layer (14) is bonded on the inner side of the projection display layer (13);
the touch sensing layer (12) comprises a first fixing layer (121) arranged on the outer side of the projection display layer (13), a magnetic sensing layer (122) used for forming an induction magnetic field is arranged on the outer side of the first fixing layer (121), a plurality of first salient points (1221) are arranged on the magnetic sensing layer (122) in an array mode, an insulating layer (123) is arranged on the outer side of the magnetic sensing layer (122), a second fixing layer (124) is arranged on the outer side of the insulating layer (123), and a second salient point (1241) used for carrying out charge exchange with the first salient point (1221) to form a reinforced induction magnetic field and a conducting layer (125) are arranged on the inner side of the second fixing layer (124);
the magnetic induction layer (122) comprises a flexible circuit board (1222), two first electrodes (1223) are connected to two sides of the surface of the flexible circuit board (1222), a plurality of second electrodes (1224) are arranged between the two first electrodes (1223), the surface of the flexible circuit board (1222) is divided into a plurality of square grids (1225) by the plurality of second electrodes (1224), and the first salient points (1221) are arranged at the central positions in the square grids (1225).
2. The touch screen for projection touch control according to claim 1, wherein a first bonding layer (111) is bonded on the inner side of the wear-resistant layer (11), a scratch-resistant layer (112) is coated on the outer side of the wear-resistant layer, the first bonding layer (111) is bonded on the touch sensing layer (12), the wear-resistant layer (11) is toughened glass, the scratch-resistant layer (112) is KN22, and the first bonding layer (111) is a photo-immobilized glue.
3. A touch screen for projecting touch according to claim 1, wherein the projection display layer (13) comprises a display inner screen (131), the outer wall of the display inner screen (131) is laterally connected with a second bonding layer (132), the second bonding layer (132) is bonded to the inner side of the touch sensing layer (12), and the second bonding layer (132) is polyurethane adhesive.
4. A touch screen for projection touch control according to claim 1, characterized in that a third adhesive layer (141) is adhered to the outer side of the reinforcing layer (14), the third adhesive layer (141) is adhered to the inner side of the projection display layer (13), the reinforcing layer (14) is a carbon fiber board, and the third adhesive layer (141) is an epoxy adhesive.
5. The touch screen for projection touch control according to claim 1, wherein a fourth adhesive layer (1211) is adhered to the outer side of the first fixing layer (121), the fourth adhesive layer (1211) is adhered to the inner side of the magnetic induction layer (122), the first fixing layer (121) is a glass plate, and the fourth adhesive layer (1211) is OCA optical adhesive.
6. The touch screen for projection touch control according to claim 1, wherein the insulating layer (123) is formed on the outer side of the flexible circuit board (1222) by hot press molding, and the insulating layer (123) is an anisotropic conductive adhesive film.
7. The touch screen for projection touch according to claim 1, wherein the second fixing layer (124) is adhered to the insulating layer (123), and the second fixing layer (124) is sensor glass.
8. A touch screen for projecting touch according to claim 1, wherein the conductive layer (125) is bonded to the second fixing layer (124), and the conductive layer (125) is an ITO film.
9. The processing technology for the touch screen for projection touch control is characterized by comprising the following steps of:
preparing a touch sensing layer, namely taking raw materials, bonding an ITO film to a sensor glass for standby, etching conductive circuits of a first electrode and a second electrode on the flexible circuit board by using laser, connecting two first electrodes on two sides of the surface of the flexible circuit board, arranging a plurality of second electrodes between the two first electrodes, dividing the surface of the flexible circuit board into a plurality of square grids by the plurality of second electrodes, etching a first bump at the central position in the square grid formed by the plurality of second electrodes, etching a second bump at the inner side of the sensor glass, wherein the laser output power is 6w, the laser scanning speed is 700mm/min, bonding the laser etched flexible circuit board to the glass board by using OCA optical adhesive, bonding pressure is 5kg, forming the anisotropic conductive film on the flexible circuit board by using a hot-press forming mode, and bonding the sensor glass to the anisotropic conductive film, thereby preparing the touch sensing layer;
secondly, assembling the projection display layer, taking raw materials, displaying the inner screen, bonding the inner screen to the glass plate through polyurethane adhesive,
thirdly, assembling the reinforcing layer, namely taking raw materials and a carbon fiber plate, bonding the carbon fiber plate and the display inner screen through an epoxy adhesive,
fourthly, assembling the wear-resistant layer, namely taking raw materials, tempering glass, coating KN22 on the surface of the tempered glass, drying with hot air, and finishing processing by adhering the tempered glass and the sensor glass through light immobilization glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110253253.XA CN112860118B (en) | 2021-03-08 | 2021-03-08 | Touch screen for projection touch control and processing technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110253253.XA CN112860118B (en) | 2021-03-08 | 2021-03-08 | Touch screen for projection touch control and processing technology thereof |
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| Publication Number | Publication Date |
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| CN112860118A CN112860118A (en) | 2021-05-28 |
| CN112860118B true CN112860118B (en) | 2024-04-02 |
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| CN202110253253.XA Active CN112860118B (en) | 2021-03-08 | 2021-03-08 | Touch screen for projection touch control and processing technology thereof |
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| TW201135545A (en) * | 2010-04-07 | 2011-10-16 | Prime View Int Co Ltd | Touch display structure and touch display apparatus comprising the same |
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| TW201428568A (en) * | 2013-01-09 | 2014-07-16 | Nat Univ Chung Hsing | Touching feedback apparatus and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253787B (en) * | 2010-05-21 | 2014-12-10 | 宸鸿科技(厦门)有限公司 | Inductive touch sensor and touch point sensing method thereof |
| CN104503654B (en) * | 2014-12-30 | 2017-08-04 | 京东方科技集团股份有限公司 | Touch-control sensing unit, touch base plate and preparation method thereof and touch-control display panel |
| JP6475998B2 (en) * | 2015-02-10 | 2019-02-27 | デクセリアルズ株式会社 | Touchpad antenna device and electronic device |
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| TW201135545A (en) * | 2010-04-07 | 2011-10-16 | Prime View Int Co Ltd | Touch display structure and touch display apparatus comprising the same |
| TW201428568A (en) * | 2013-01-09 | 2014-07-16 | Nat Univ Chung Hsing | Touching feedback apparatus and application thereof |
| CN103913873A (en) * | 2013-08-07 | 2014-07-09 | 上海天马微电子有限公司 | Liquid crystal display panel, display device and scanning method of display device |
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