CN104866145B - The manufacture method of capacitive touch screen - Google Patents
The manufacture method of capacitive touch screen Download PDFInfo
- Publication number
- CN104866145B CN104866145B CN201410062692.2A CN201410062692A CN104866145B CN 104866145 B CN104866145 B CN 104866145B CN 201410062692 A CN201410062692 A CN 201410062692A CN 104866145 B CN104866145 B CN 104866145B
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- China
- Prior art keywords
- pad
- ito film
- manufacture method
- touch screen
- capacitive touch
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Abstract
The invention discloses a kind of capacitive touch screen manufacture method, the touch-screen is bound to the flexible PCB of the ito film including a cover plate, an ito film and one, it is characterised in that the manufacture method includes step：A board is provided, the board includes a flexible loading plate and a roller being placed in below the flexible loading plate；A pad is formed, the pad is attached to the upper surface of the flexible loading plate；The ito film for binding flexible circuit board is placed on board so that the flexible PCB and the Non-overlapping Domain of the ito film align the pad；Cover plate is set in the top of the flexible PCB and the ito film, and applies a downward pressure to the cover plate；The bottom surface that the roller rolls the flexible loading plate is operated, the flexible PCB and the ito film are connected to the cover plate.The method of the present invention is easy to operate, simply；Efficiency can be improved, reduces cost.
Description
Technical field
It is especially relevant with a kind of manufacture method of capacitive touch screen the present invention relates to touch screen technology field.
Background technology
Capacitive touch screen is widely used in various information and shows product as a kind of emerging man-machine communication's interface system,
Such as mobile phone, PAD, multimedia, GPS navigation system, common query system.
As depicted in figs. 1 and 2, the capacitive touch screen of prior art, it is made up of three big components：Cover plate 1, special transparent lead
Transmitting/induction electrode layer that conductive film material is formed（Typically Film, namely ito film 2）With flexible PCB 3.
When using capacitive touch screen, when human body or special conductor touch interface, transmitting/induction electrode layer has portion
Divide and be capacitively coupled in finger or conductor, the process chip IC on flexible PCB 3 can be captured and be sensed the change of the electric capacity
Situation and position, so as to realize touch positioning function.
The structure of capacitive touch screen tends to three proofings at present, and the structure design of ito film 2 is paved with whole touch as far as possible
The cover plate 1 of screen is touched, forms 1:1 structure.In this case, there is the Non-overlapping Domain 7 with ito film 2 in flexible PCB 3, non-heavy
Folded region 7, flexible PCB 3 is connected to cover plate 1 by the double faced adhesive tape 9 being adhered in advance on flexible PCB 3, and flexible circuit
The thickness of the thickness ratio ito film 2 of plate 3 want it is thin much therefore the Non-overlapping Domain 7 and surrounding there are difference in height, as shown in Figure 2.
Therefore, in the manufacture method of the capacitive touch screen of prior art, as shown in figure 3, in cover plate 1（Glass material,
Abbreviation CG）In the processing procedure combined with ito film 2, the roller 5 for being placed in the lower section of flexible loading plate 4 of board is difficult to be rolled into flexible electrical
The Non-overlapping Domain 7 of road plate 3, so that flexible PCB 3 is viscous loosely with cover plate 1, cause capacitive touch screen（Abbreviation TP）
Failure risk greatly increases in reliability test, and product can not import volume production.
For above-mentioned technical barrier, conventional solution method is when designing flexible PCB 3, in flexible PCB 3
One reinforcing block is set at non-overlapped area 7（Not shown in figure）, to reach the thickness of flexible PCB 3 and the thickness of ito film 2 in theory
Flush, increase the precompression between flexible PCB 3 and cover plate 1 so that flexible PCB 3 can firmly be bonded at one with cover plate 1
Rise.
To sum up, the manufacture method of existing capacitive touch screen has the defects of following：
1st, because the material thickness of reinforcing block has tolerance, occur that the non-overlapped area of flexible PCB 3 compares ito film unavoidably
2 thick collocation, touch-screen is jacked up when causing the complete machine to install, fail to stick with fore shell；
2nd, prior art is due to increasing reinforcing block, and is directed to each touch-screen, is required for being equipped with one piece of reinforcing block, and
Reinforcing block is also taken out after the completion of rolling.Thus production process increase, causes efficiency to decline, and yield declines, cost increase；
3rd, reinforcing block thickness specification is not complete, and is non-general thickness material, therefore selection, checking are wasted time and energy.
Above technological difficulties are difficult to solve, and labor intensive material resources are big.
The content of the invention
In view of the defects of prior art is present, the purpose of the present invention is to propose to a kind of manufacture method of capacitive touch screen,
To solve the problems, such as that prior art is present.
To achieve the above object, the present invention proposes a kind of manufacture method of capacitive touch screen, and the touch-screen includes a lid
Plate, an ito film and one are bound to the flexible PCB of the ito film, it is characterised in that the manufacture method includes step：There is provided one
Board, the board include a flexible loading plate and a roller being placed in below the flexible loading plate；A pad is formed, by the pad
Attach the upper surface of the flexible loading plate；The ito film for binding flexible circuit board is placed on board so that the flexible PCB
The pad is aligned with the Non-overlapping Domain of the ito film；Cover plate is set in the top of the flexible PCB and the ito film, and to this
Cover plate applies a downward pressure；The bottom surface that the roller rolls the flexible loading plate is operated, by the flexible PCB and the ito film
It is connected to the cover plate.
The beneficial effects of the present invention are, the manufacture method of capacitive touch screen of the invention, by carry out cover plate with
Stick on pad on the board of ito film combination, effectively improve the bad phenomenon that flexible PCB and cover plate do not glue, eliminate because
Customer complaint problem caused by this；The cost of manufacture of flexible PCB greatly reduces, shortens fabrication cycle.Meanwhile use is shorter
Operating time can put things right once and for all.After the completion of touch-screen production, pad is torn it down from board, board not produced any
Harmful effect.
Brief description of the drawings
Fig. 1 show the schematic front view of capacitive touch screen；
Fig. 2 is A_A sectional views in Fig. 1；
Fig. 3 show the manufacture method schematic diagram of existing capacitive touch screen；
Fig. 4-Fig. 7 show the manufacture method schematic flow sheet of the capacitive touch screen of the embodiment of the present invention.
Embodiment
The present invention is described in further details with reference to the accompanying drawings and detailed description.
As Figure 4-Figure 7, the capacitive touch screen manufacture method of the embodiment of the present invention, mainly three steps are included, with
Under make introductions all round.Wherein, the flexible PCB 3 in Fig. 4-Fig. 7 includes the double faced adhesive tape 9 adhered to thereon, and ito film 2 also includes it
On the OCA glue 8 that is adhered to.
First step is to form pad, and is attached to the step on board.
It is the selection of pad 6 first, the effect of pad 6 is that flexible PCB 3 is padded, with when roller 5 is rolled,
Flexible PCB 3 can be very good be bonded with cover plate 1.The reinforcing block of prior art is polyimides（PI）Material, and it is of the invention
In the manufacture method of the capacitive touch screen of embodiment, pad 6 can be for the protection in capacitive touch screen manufacturing process
By the ito film 2 of waste discharge or other processing procedure films on the films such as film or processing procedure.
The thickness of pad 6, then need to obtain by calculating.The ito film 2 in the capacitive touch screen to be manufactured can be calculated
With the gross thickness and flexible PCB 3 and the thickness of the gross thickness of the double faced adhesive tape 9 on flexible PCB 3 of the OCA glue 8 in ito film 2
Difference, to calculate the theoretic throat difference of gained as the thickness requirement of pad 6.
The thickness of pad 6 can be realized by sheet of membrane, can also pass through same thickness or the membrane stack of different-thickness
It is stacked with and matches somebody with somebody to realize, you can any thickness is made, to meet the thickness requirement of pad 6.For example, if the theory for calculating gained is thick
It is 1mm to spend difference, then can choose the diaphragm of two panels 0.5mm thickness to form pad 6.The capacitive touch screen of different batches, its
Pad 6 can have different thickness.
Preferably, also need to carry out cutting shaping to pad 6, pad 6 can be cut into and the double faced adhesive tape on flexible PCB 3
9 identical shapes.
After cutting, as shown in Figure 4 and Figure 5, pad 6 is attached to and carried out on the board that cover plate combines with ito film, specifically
It is on the flexible loading plate 4 of board.Preferably, pad 6 be attached on the flexible loading plate 4 of board with flexible PCB 3
Double faced adhesive tape 9 corresponding to position.
The step of second step is wiring capacitance formula touch-screen.
First the ito film 2 of flexible PCB 3 is bound, then as shown in fig. 6, the ito film 2 for binding flexible circuit board 3 put
In on board, and cause flexible PCB 3 aligns pad 6 with the Non-overlapping Domain 7 of ito film 2, then, as shown in fig. 7,
The top of flexible PCB 3 and ito film 2 sets cover plate 1.
Bind ito film 2 and the step of flexible PCB 3, can with the capacitive touch screen manufacture method of prior art
Corresponding step is identical.
The step of 3rd step is roller rolling.
Apply downward pressure above cover plate 1, meanwhile, rolled by the roller 5 of the lower section of flexible loading plate 4 of board,
Flexible PCB 3 and ito film 2 are all connected to cover plate 1.Wherein, flexible PCB 3 is bonded in cover plate 1 by OCA glue 8, and soft
Property circuit board 3 is then bonded in cover plate 1 by double faced adhesive tape 9.
The manufacture method of capacitive touch screen in the embodiment of the present invention, due to carrying out what cover plate 1 combined with ito film 2
Pad 6 is sticked on board, has effectively improved the bad phenomenon that flexible PCB 3 does not glue with cover plate 1, eliminate therefore cause
Customer complaint problem；The cost of manufacture of capacitive touch screen greatly reduces, shortens fabrication cycle.Meanwhile the behaviour that use is shorter
Making the time can put things right once and for all.After the completion of touch-screen production, pad 6 is torn it down from the flexible loading plate 4 of board, to board
Any harmful effect is not produced.
Although exemplary embodiment describing the present invention with reference to several, it is to be understood that, term used is explanation and shown
Example property and nonrestrictive term.Due to the present invention can be embodied in a variety of forms without departing from the present invention spirit or
Essence, it should therefore be appreciated that above-described embodiment is not limited to any foregoing details, and should be in the essence that appended claims are limited
Widely explained in god and scope, therefore the whole changes fallen into claim or its equivalent scope and remodeling all should be appended
Claim is covered.
Claims (7)
1. a kind of capacitive touch screen manufacture method, the touch-screen is bound to the ito film including a cover plate, an ito film and one
Flexible PCB, it is characterised in that the manufacture method includes step：
A board is provided, the board includes a flexible loading plate and a roller being placed in below the flexible loading plate；
A pad is formed, the pad is attached to the upper surface of the flexible loading plate, the pad is diaphragm or discarded ITO
Film or other processing procedure films；
The ito film for binding flexible circuit board is placed on board so that the flexible PCB and the Non-overlapping Domain of the ito film
Align the pad；
Cover plate is set in the top of the flexible PCB and the ito film, and applies a downward pressure to the cover plate；
The bottom surface that the roller rolls the flexible loading plate is operated, the flexible PCB and the ito film are connected to the cover plate.
2. capacitive touch screen manufacture method as claimed in claim 1, it is characterised in that in the step of forming the pad,
The pad is formed by sheet of membrane, or the pad is formed by the membrane stack of multi-disc same thickness or different-thickness.
3. capacitive touch screen manufacture method as claimed in claim 2, it is characterised in that the step of forming the pad includes：
Determine the spacer thickness；
It is determined that form the quantity of the film of the pad；And
Stack and cut shaping.
4. capacitive touch screen manufacture method as claimed in claim 3, it is characterised in that utilized between the ito film and cover plate
One OCA glue is bonded to each other, and the flexible PCB and the non-overlapped area of the ito film are bonded to each other using a double faced adhesive tape and the cover plate.
5. capacitive touch screen manufacture method as claimed in claim 4, it is characterised in that the thickness of the pad is：The ito film
With the gross thickness of the OCA glue, thickness difference of the flexible PCB obtained by with the gross thickness of the double faced adhesive tape is subtracted.
6. capacitive touch screen manufacture method as claimed in claim 5, it is characterised in that in the stacking and cut the step of shaping
In rapid, the pad is cut into and the double faced adhesive tape identical shape.
7. capacitive touch screen manufacture method as claimed in claim 6, it is characterised in that the pad is attached to the soft of board
Position corresponding with the double faced adhesive tape on property loading plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410062692.2A CN104866145B (en) | 2014-02-24 | 2014-02-24 | The manufacture method of capacitive touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410062692.2A CN104866145B (en) | 2014-02-24 | 2014-02-24 | The manufacture method of capacitive touch screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104866145A CN104866145A (en) | 2015-08-26 |
| CN104866145B true CN104866145B (en) | 2018-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410062692.2A Expired - Fee Related CN104866145B (en) | 2014-02-24 | 2014-02-24 | The manufacture method of capacitive touch screen |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108920028B (en) * | 2018-06-21 | 2021-06-11 | 业成科技（成都）有限公司 | Touch module |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101308424A (en) * | 2007-05-15 | 2008-11-19 | 宏达国际电子股份有限公司 | Electronic device |
| CN101907942A (en) * | 2009-06-08 | 2010-12-08 | 矽创电子股份有限公司 | Touch panel |
| CN103135271A (en) * | 2011-12-02 | 2013-06-05 | 宸鸿科技(厦门)有限公司 | Attaching structure, touch display with attaching structure and attaching method of touch display |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006106063A (en) * | 2004-09-30 | 2006-04-20 | Optrex Corp | Display apparatus |
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2014
- 2014-02-24 CN CN201410062692.2A patent/CN104866145B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101308424A (en) * | 2007-05-15 | 2008-11-19 | 宏达国际电子股份有限公司 | Electronic device |
| CN101907942A (en) * | 2009-06-08 | 2010-12-08 | 矽创电子股份有限公司 | Touch panel |
| CN103135271A (en) * | 2011-12-02 | 2013-06-05 | 宸鸿科技(厦门)有限公司 | Attaching structure, touch display with attaching structure and attaching method of touch display |
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| Publication number | Publication date |
|---|---|
| CN104866145A (en) | 2015-08-26 |
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