CN108227975B - Non-planar touch panel production process and non-planar touch panel - Google Patents
Non-planar touch panel production process and non-planar touch panel Download PDFInfo
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- CN108227975B CN108227975B CN201611191695.1A CN201611191695A CN108227975B CN 108227975 B CN108227975 B CN 108227975B CN 201611191695 A CN201611191695 A CN 201611191695A CN 108227975 B CN108227975 B CN 108227975B
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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
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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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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Abstract
The invention relates to the technical field of touch panel processing, in particular to a non-planar touch panel production process and a non-planar touch panel. The production process of the non-planar touch panel comprises the following steps: processing the shape of the functional sheet, and processing a notch on the edge of the functional sheet; wherein the length of the notch is not more than 1.5 times the thickness of the arc-shaped edge area of the cover plate; the edge of the notch is nonlinear; connecting the FPC and the functional sheet to form FOG; attaching the FOG on the surface of the cover plate. The non-planar touch panel is processed by adopting the non-planar touch panel production process. The invention aims to provide a non-planar touch panel production process and a non-planar touch panel so as to realize the attachment of an FOG (foot on glass) and a non-planar cover plate.
Description
Technical Field
The invention relates to the technical field of touch panel processing, in particular to a non-planar touch panel production process and a non-planar touch panel.
Background
With the progress of the industrial level and the increasing of the living standard of people, the market demand for the glass screen is higher and higher.
The mobile phone adopting the non-planar glass screens such as the 2.5D screen and the 3D screen appears in the current market, and compared with the traditional planar glass screen, the non-planar glass screen improves the appearance aesthetic degree of the mobile phone body to a certain extent and improves the experience of a user when the user uses the screen to touch the screen.
The non-planar glass screen refers to a plane or a cambered surface in the middle area, and the edge part of the non-planar glass screen adopts cambered surface transition. For example, a 2.5D screen is an area with a plane in the center of the glass, and the periphery has an excessive arc surface, that is, the edge is subjected to radian processing on the basis of the plane glass; the middle area of the 3D screen can adopt a plane or a cambered surface, and the edge area adopts an arc design.
The touch panel is arranged below the Glass screen, is mainly used for detecting touch operation, and is formed by attaching FOG (flexible printed circuit board) and a cover plate. The existing attachment of the FOG and the cover plate mainly aims at the attachment between planes.
Along with the increasingly wide application of electronic products such as mobile phones and tablet computers with non-planar glass screens, the touch panel formed by assembling the FOG with the flat surface attached and the cover plate limits the development of the touch panel, and reduces the experience of a user in touch screen operation of the electronic products with the non-planar glass screens. Therefore, it is necessary to develop a process for attaching the FOG to the non-planar cover plate.
Disclosure of Invention
The invention aims to provide a non-planar touch panel production process and a non-planar touch panel so as to realize the attachment of an FOG (foot on glass) and a non-planar cover plate.
The invention provides a production process of a non-planar touch panel, which comprises the following steps:
processing the shape of the functional sheet, and processing a notch on the edge of the functional sheet; wherein the length of the notch is not more than 1.5 times the thickness of the arc-shaped edge area of the cover plate; the edge of the notch is nonlinear;
connecting the FPC and the functional sheet to form FOG;
attaching the FOG on the surface of the cover plate.
According to the optional technical scheme, the edge of the notch is wavy.
According to an optional technical scheme of the invention, the notch extends along the central direction of the functional sheet.
According to the optional technical scheme, when the cross section of the functional sheet is polygonal, the notches are arranged at the corners of the functional sheet;
when the cross section of the functional sheet is oval, the plurality of gaps are centrosymmetric along the circle center of the functional sheet;
when the cross-section of function piece is circular, a plurality of the breach evenly sets up the edge of function piece.
The optional technical scheme of the invention is that attaching the FOG to the surface of the cover plate comprises:
the FOG is attached to the positioning film, wherein the functional sheet is connected between the FPC and the positioning film;
the positioning film is fixed on the first cavity, the cover plate is fixed on the second cavity, the first cavity and the second cavity are buckled and vacuumized, so that the pressure between the first cavity and the second cavity is 30kPa-45kPa, and the attaching pressure of the FOG and the cover plate is 8kN-10 kN;
and tearing off the positioning film to form the non-planar touch panel.
The invention has the optional technical scheme that the FOG is assembled by connecting the FPC and the functional sheet by using a hot-press bonding technology for 9S-12S under the environment of 2-2.5 Mpa and 155-165 ℃.
The optional technical scheme of the invention is that the appearance of the functional sheet is processed by laser.
The optional technical scheme of the invention is that the laser functional sheet has the shape of a laser functional sheet with the power of 35 +/-10W and the moving speed of 75 +/-10 mm/s.
The optional technical scheme of the invention is that the cover plate is a 3D glass cover plate, a 3D sapphire cover plate or a 3D ceramic cover plate.
The non-planar touch panel provided by the invention is processed by adopting the production process of the non-planar touch panel.
According to the non-planar touch panel production process and the non-planar touch panel, the notch is processed at the edge of the functional sheet, so that when the FOG assembled by the functional sheet and the FPC is attached to the surface of the non-planar cover plate, the attachment degree of the edge area of the FOG to the arc-shaped edge area of the cover plate is better, attachment bubbles and edge wrinkles can be prevented from occurring in the edge area of the FOG, and therefore the attachment of the FOG to the non-planar cover plate is realized, and the non-planar touch panel can be processed; through adopting the breach edge that is nonlinear type, so that nonlinear type's breach can provide the change volume of X axle Y axle to a certain extent, more do benefit to the marginal zone of FOG and the laminating of the arc marginal zone of apron, further prevent that laminating bubble and marginal fold from appearing in the marginal zone of FOG, with further ensure to process non-planar touch panel, the FOG of having solved current plane and plane laminating has restricted touch panel's development with the touch panel that the apron equipment formed, comparatively speaking has enlarged current planar touch panel's range of application, thereby experience when the user uses the touch screen operation of the electronic product of non-planar glass screen has been improved to a certain extent, touch panel's market competition has also been improved to a certain extent.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is an exploded view of a conventional flat touch panel;
fig. 2 is an exploded view of a non-planar touch panel according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an FOG of the non-planar touch panel shown in FIG. 2;
FIG. 4 is a schematic structural diagram of a functional sheet of the non-planar touch panel shown in FIG. 2;
FIG. 5 is an enlarged view of a functional sheet of the non-planar touch panel shown in FIG. 4;
fig. 6 is a schematic structural diagram of a positioning film of a non-planar touch panel according to an embodiment of the present invention.
Icon: 100' -functional sheet; 200' -FPC; 300' -cover plate; 400' -FOG;
100-functional sheet; 110-notch; 200-FPC; 300-a cover plate; 400-FOG; 500-positioning the membrane.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
Referring to fig. 2 to 6, the present embodiment provides a non-planar touch panel production process; fig. 2 is an exploded view of a non-planar touch panel according to an embodiment of the present invention; FIG. 3 is a schematic structural diagram of an FOG of the non-planar touch panel shown in FIG. 2; FIG. 4 is a schematic structural diagram of a functional sheet of the non-planar touch panel shown in FIG. 2; FIG. 5 is an enlarged view of a functional sheet of the non-planar touch panel shown in FIG. 4; fig. 6 is a schematic structural diagram of a positioning film of a non-planar touch panel according to an embodiment of the present invention.
Referring to fig. 2 to 6, the non-planar touch panel production process provided in this embodiment includes the following steps:
processing the shape of the functional sheet 100, and processing a notch 110 on the edge of the functional sheet 100; wherein the length of the gap 110 is not more than 1.5 times the thickness of the arc-shaped edge region of the cover plate 300; the edges of the notch 110 are nonlinear; for the edge of the linear notch 110, when the edge of the nonlinear notch 110 is bonded to the edge region of the non-planar cover plate 300 at the edge region of the FOG400, the two side edges of the notch 110 can be substantially closed to form a smaller gap, for example, a gap with a tolerance smaller than 0.1mm is formed, so that the occurrence of bonding bubbles and edge wrinkles is prevented, the bonding qualification rate of the FOG400 and the non-planar cover plate 300 is improved to a certain extent, and the quality of the non-planar touch panel is improved to a certain extent. The length of the notch 110 may be, for example, 1.5 times, 1.2 times, 1.0 times, 0.9 times, 0.7 times, etc. of the thickness of the arc-shaped edge region of the cover plate 300, and preferably, the length of the notch 110 is 1.4 times of the thickness of the arc-shaped edge region of the cover plate 300.
The FPC200 is connected to the functional sheet 100 to form the FOG 400.
The FOG400 is attached to the surface of the cover plate 300 to form a non-planar touch panel. Alternatively, the FPC200 is connected between the cap plate 300 and the functional sheet 100, or the functional sheet 100 is connected between the cap plate 300 and the FPC 200; preferably, the FPC200 is connected between the cap plate 300 and the functional sheet 100.
Optionally, attaching the FOG400 to the surface of the cover plate 300 includes:
the FOG400 is attached to the positioning film 500, wherein the functional sheet 100 is connected between the FPC200 and the positioning film 500; the positioning film 500, the functional sheet 100, and the FPC200 are connected in order in the thickness direction of the FOG 400. Preferably, the FOG400 is attached to the special positioning film 500 by a plate-turning attaching machine by adopting a plate-turning attaching technology; the FOG400 may be preliminarily positioned on a vacuum laminator by the positioning film 500 to facilitate attachment of the FOG to the cover plate.
The FOG400 is fixed on a first cavity along with a positioning film 500, the cover plate 300 is fixed on a second cavity, and the first cavity and the second cavity are buckled and vacuumized so that the pressure between the first cavity and the second cavity is 30kPa-45kPa, and the attaching pressure of the FOG400 and the cover plate 300 is 8kN-10 kN; optionally, the first cavity and the second cavity are respectively matched cavities of a vacuum laminating machine. Alternatively, the positioning film 500 is fixed at a preset position of the first cavity by image sensor (i.e. CCD) positioning; alternatively, the cover plate 300 is fixed at a predetermined position of the second cavity by positioning with an image sensor (i.e., CCD). Alternatively, the positioning film 500 is fixed to the first cavity by vacuum adsorption, and the cover plate 300 is fixed to the second cavity by vacuum adsorption. It should be noted that the FOG400 is fixed on the first cavity along with the positioning film 500, and the surface of the FOG400 to be attached to the cover plate 300 is far away from the first cavity; the side of the cover plate 300, which needs to be attached to the FOG400, is far away from the second cavity, and the side of the cover plate 300, which needs not to be attached to the FOG400, is connected to the second cavity.
The positioning film 500 is torn off, the FOG400 and the cover plate 300 form a non-planar touch panel, that is, the functional sheet 100, the FPC200 and the cover plate 300 form a non-planar touch panel.
In the non-planar touch panel production process in this embodiment, the notch 110 is processed at the edge of the functional sheet 100, so that when the FOG400 assembled by the functional sheet 100 and the FPC200 is attached to the surface of the non-planar cover plate 300, the edge area of the FOG400 can be better attached to the arc-shaped edge area of the cover plate 300, and attachment bubbles and edge wrinkles can be prevented from occurring in the edge area of the FOG400, so that the attachment of the FOG400 to the non-planar cover plate 300 is realized, and the non-planar touch panel can be processed; through adopting the 110 edges of the notch that are nonlinear type, so that the notch 110 of nonlinear type can provide the variable quantity of X axle Y axle to a certain extent, be more favorable to the marginal zone of FOG400 and the laminating of the arc marginal zone of apron 300, further prevent that laminating bubble and marginal fold from appearing in the marginal zone of FOG400, in order to further ensure to process non-planar touch panel, the development that touch panel that FOG400 and apron 300 equipment that has solved current plane and plane laminating formed has restricted touch panel, comparatively speaking enlarged current planar touch panel's range of application, thereby experience when the user uses the touch screen operation of the electronic product of non-planar glass screen has been improved to a certain extent, touch panel's market competition has also been improved to a certain extent.
To better understand the present embodiment, fig. 1 is an exploded view of a conventional planar touch panel; the conventional flat touch panel includes a functional sheet 100 ', an FPC200 ', and a cover 300 '; wherein, the functional sheet 100 ' and the FPC200 ' are assembled into the FOG400 '. In contrast to fig. 2, the edge of the functional sheet 100' of fig. 1 is not notched.
It should be noted that the FPC, referred to as a Flexible Printed circuit for short, is a Flexible Printed circuit board, which is made of polyimide or polyester film as a base material and has high reliability and excellent flexibility; the high-density light-weight LED lamp has the characteristics of high wiring density, light weight, thin thickness and good bending property.
The functional sheet, also known as sensor by those skilled in the art, is an electrical signal functional layer of the touch screen, and may be formed by a single layer material or a composite structure formed by multiple layers of materials.
FOG, english full name: the FPC on Glass is formed by assembling FPC and a functional sheet (also called sensor); the FPC and the functional sheet are generally hot-pressed by a hot-pressing technique at a certain temperature, pressure and time.
In the alternative of this embodiment, the edge of the notch 110 may have a wavy shape, a tooth shape, a curved shape, etc., for example; preferably, the edges of the indentation 110 are wavy. The wavy notch 110 is convenient for production and processing, and relatively speaking, the wavy shape has adjustability, and when the edge area of the FOG400 is attached to the edge area of the non-planar cover plate 300, the edge of the notch 110 can be substantially closed, for example, a gap with a tolerance of less than 0.1mm is formed, and attachment bubbles and edge wrinkles in the edge area of the FOG400 can be prevented, so that the quality of the non-planar touch panel is improved to a certain extent.
In an alternative of the present embodiment, the notch 110 extends in the center direction of the functional sheet 100; when the edge region of the FOG400 is attached to the edge region of the non-planar cover 300, the edge closeness of the notch 110 can be improved by extending the notch 110 along the central direction of the functional sheet 100, so that the quality of the non-planar touch panel is improved to a certain extent.
In an alternative of this embodiment, when the cross section of the functional sheet 100 is polygonal, the notches 110 are arranged at the corners of the functional sheet 100; for example, when the cross section of the functional sheet 100 is a quadrangle, the notches 110 are provided at four corners of the functional sheet.
When the cross section of the functional sheet 100 is elliptical, the plurality of notches 110 are symmetrical along the center of the functional sheet 100.
When the cross section of the functional sheet 100 is circular, the plurality of notches 110 are uniformly provided at the edge of the functional sheet 100. The edge of the functional sheet 100 may be provided with notches 110, for example, in a number of 3, 4, 6, etc.
In the alternative of this embodiment, the FOG400 is assembled by connecting the FPC200 and the functional sheet 100 by using a thermal compression bonding technique for 9S-12S under the environment of 2MPa-2.5MPa and 155 deg.C-165 deg.C.
In an alternative embodiment, the profile of the functional sheet 100 is processed by laser. By adopting the laser processing function piece 100, the production efficiency is high, the quality is reliable, the economic benefit is high, the non-contact processing is realized, and the direct impact on the function piece 100 is avoided, so that the function piece 100 has no mechanical deformation, and the energy of the high-energy laser beam and the moving speed thereof are adjustable.
Further, the laser functional sheet 100 is moved at a power of 35 + -10W and a moving speed of 75 + -10 mm/s.
In an alternative of this embodiment, the cover plate 300 is a 3D glass cover plate, a 3D sapphire cover plate, or a 3D ceramic cover plate.
Example two
The second embodiment provides a non-planar touch panel, the non-planar touch panel is produced and processed by the non-planar touch panel production process of the first embodiment, technical features of the non-planar touch panel production process disclosed in the first embodiment are also applicable to the embodiment, and technical features of the non-planar touch panel production process disclosed in the first embodiment are not described repeatedly.
For economy of space, the improved features of this embodiment are also embodied in fig. 2-6, and the solution of this embodiment is therefore described in connection with fig. 2-6.
Referring to fig. 2 to 6, the non-planar touch panel provided in this embodiment is manufactured by a non-planar touch panel manufacturing process.
The non-planar touch panel in this embodiment has the advantages of the non-planar touch panel production process in the first embodiment, that is, the notch 110 is processed at the edge of the functional sheet 100, so that when the FOG400 assembled by the functional sheet 100 and the FPC200 is attached to the surface of the non-planar cover plate 300, the edge area of the FOG400 can be better attached to the arc-shaped edge area of the cover plate 300, and attachment bubbles and edge wrinkles can be prevented from occurring in the edge area of the FOG400, thereby achieving attachment of the FOG400 to the non-planar cover plate 300; other advantages of the non-planar touch panel production process disclosed in embodiment one will not be described again.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and 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 still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A production process of a non-planar touch panel is characterized by comprising the following steps:
processing the shape of the functional sheet, and processing a notch on the edge of the functional sheet; wherein the length of the notch is not more than 1.5 times the thickness of the arc-shaped edge area of the cover plate; the edge of the notch is nonlinear;
connecting the FPC and the functional sheet to form FOG;
attaching FOG on the surface of the cover plate;
attaching the FOG to the surface of the cover plate comprises:
the FOG is attached to the positioning film, wherein the functional sheet is connected between the FPC and the positioning film;
the positioning film is fixed on the first cavity, the cover plate is fixed on the second cavity, the first cavity and the second cavity are buckled and vacuumized, so that the pressure between the first cavity and the second cavity is 30kPa-45kPa, and the attaching pressure of the FOG and the cover plate is 8kN-10 kN;
and tearing off the positioning film to form the non-planar touch panel.
2. The process for producing a non-planar touch panel according to claim 1, wherein the edge of the notch is wavy.
3. The process for producing a non-planar touch panel according to claim 1, wherein the notch extends along a central direction of the functional sheet.
4. The production process of the non-planar touch panel according to claim 1, wherein when the cross section of the functional sheet is polygonal, the notches are arranged at the corners of the functional sheet;
when the cross section of the functional sheet is oval, the plurality of gaps are centrosymmetric along the circle center of the functional sheet;
when the cross-section of function piece is circular, a plurality of the breach evenly sets up the edge of function piece.
5. The production process of the non-planar touch panel according to claim 1, wherein the FOG is assembled by connecting the FPC and the functional sheet by using a hot-press bonding technology for 9S-12S under the environment of 2MPa-2.5MPa and 155-165 ℃.
6. The non-planar touch panel production process of claim 1, wherein the functional sheet is processed by laser.
7. The process of claim 6, wherein the laser functional sheet is moved at a power of 35 ± 10W at a speed of 75 ± 10 mm/s.
8. The non-planar touch panel production process according to claim 1, wherein the cover plate is a 3D glass cover plate, a 3D sapphire cover plate, or a 3D ceramic cover plate.
9. A non-planar touch panel manufactured by the manufacturing process of the non-planar touch panel according to any one of claims 1 to 8.
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| CN201611191695.1A CN108227975B (en) | 2016-12-21 | 2016-12-21 | Non-planar touch panel production process and non-planar touch panel |
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| CN201611191695.1A CN108227975B (en) | 2016-12-21 | 2016-12-21 | Non-planar touch panel production process and non-planar touch panel |
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| CN108227975B true CN108227975B (en) | 2020-12-08 |
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| CN109976589B (en) * | 2019-04-08 | 2022-04-26 | 深圳市华星光电半导体显示技术有限公司 | Touch screen laminating detection equipment and laminating method thereof |
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| US20100012353A1 (en) * | 2008-07-18 | 2010-01-21 | Erel Milshtein | Elongated semiconductor devices, methods of making same, and systems for making same |
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| CN101517463A (en) * | 2006-09-27 | 2009-08-26 | 夏普株式会社 | Liquid crystal display panel provided with microlens array, method for manufacturing the liquid crystal display panel, and liquid crystal display device |
| CN101727249A (en) * | 2008-10-31 | 2010-06-09 | 宸鸿光电科技股份有限公司 | Manufacturing method and structure of camber-shaped capacitance type touch-control plate |
| CN103955306A (en) * | 2014-03-07 | 2014-07-30 | 业成光电（深圳）有限公司 | Three-dimension curve surface touch control panel |
| CN104808843A (en) * | 2015-04-03 | 2015-07-29 | 业成光电（深圳）有限公司 | Touch panel and touch display panel |
| CN105196674A (en) * | 2015-08-27 | 2015-12-30 | 浙江理工大学 | Manufacture method for flexible bulletproof laminated plate |
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