CN108925060B - Touch screen display module, FPC and manufacturing method thereof - Google Patents
Touch screen display module, FPC and manufacturing method thereof Download PDFInfo
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- CN108925060B CN108925060B CN201810712168.3A CN201810712168A CN108925060B CN 108925060 B CN108925060 B CN 108925060B CN 201810712168 A CN201810712168 A CN 201810712168A CN 108925060 B CN108925060 B CN 108925060B
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- fpc
- metal layer
- touch screen
- insulating layer
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/24—Reinforcing the conductive pattern
- H05K3/243—Reinforcing the conductive pattern characterised by selective plating, e.g. for finish plating of pads
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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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0266—Marks, test patterns or identification means
- H05K1/0268—Marks, test patterns or identification means for electrical inspection or testing
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0277—Bendability or stretchability details
- H05K1/028—Bending or folding regions of flexible printed circuits
-
- 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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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Push-Button Switches (AREA)
- Structure Of Printed Boards (AREA)
Abstract
The invention discloses a touch screen display module, an FPC and a manufacturing method thereof. The manufacturing method comprises the following steps: and plating a metal layer on the TX/RX pin of the FPC after the etching and demolding treatment. According to the invention, the metal layer is arranged on the TX/RX pin to form the test point, and the fault location and judgment of the TX/RX routing can be realized by testing the impedance of the test point.
Description
Technical Field
The invention relates to the technical field of electronic products, in particular to a touch screen display module, an FPC (flexible printed circuit) and a manufacturing method thereof.
Background
The FPC (flexible printed circuit) is one of the most complex and versatile circuit board products, and particularly because it has the characteristics of lightness, thinness, flexibility, low voltage, low power consumption, etc., it can perform three-dimensional wiring in three-dimensional space according to the size and shape of the internal space of the electronic product. Therefore, the touch panel is widely applied to touch display screens of electronic products such as notebook computers, liquid crystal displays, hard disks, printers, automobiles and the like. The FPC is used as a connecting part of a screen and an IC (integrated circuit) and is connected with the main screen through welding to play a role in data transmission.
The FPC comprises a TX/RX wiring line, an IIC (integrated circuit bus) signal circuit connected to a port, a reset circuit, an interrupt circuit, a power supply circuit and the like, wherein voltage stabilizing and filtering capacitors are arranged on the IIC signal circuit, the reset circuit, the interrupt circuit and the power supply circuit, and whether signals are abnormal or not can be directly tested through an oscilloscope so as to judge the reason of circuit faults. And no voltage stabilizing and filtering capacitor is arranged on the TX/RX wiring, and the TX/RX wiring is covered by a protective film, so that no electrical property test point for effective analysis is directly formed, and failure judgment cannot be carried out.
Disclosure of Invention
The invention aims to overcome the defect that the fault judgment of the TX/RX wiring of an FPC (flexible printed circuit) cannot be carried out in the prior art, and provides a touch screen display module, the FPC and a manufacturing method thereof.
The invention solves the technical problems through the following technical scheme:
a manufacturing method of an FPC comprises the following steps: and plating a metal layer on the TX/RX pin of the FPC after the etching and demolding treatment.
Preferably, the manufacturing method further comprises:
attaching a protective film with a hollow opening on the FPC, wherein the hollow opening is opposite to the metal layer;
an insulating layer is covered on the metal layer.
Preferably, the insulating layer is made of PI or PET.
Preferably, the metal layer is an inert metal;
and/or the thickness of the metal layer is 0.3-0.9 μm.
An FPC comprises TX/RX pins, and a metal layer is plated on the TX/RX pins.
Preferably, the FPC further comprises: a protective film and an insulating layer;
the protective film is provided with a hollowed-out opening;
the protective film is pasted on the FPC, and the hollowed-out opening is opposite to the metal layer;
the insulating layer covers the metal layer.
Preferably, the material of the insulating layer is PI (polyimide) or PET (polyethylene terephthalate).
Preferably, the metal layer is an inert metal;
and/or the thickness of the metal layer is 0.3-0.9 μm.
A touch screen display module comprises a touch screen and the FPC as described above;
the touch screen is electrically connected with the FPC.
The positive progress effects of the invention are as follows: according to the invention, the metal layer is arranged on the TX/RX pin to form the test point, and the fault location and judgment of the TX/RX routing can be realized by testing the impedance of the test point.
Drawings
Fig. 1 is a flowchart of a method for manufacturing an FPC according to embodiment 1 of the present invention.
Fig. 2 is a flowchart of a method for manufacturing an FPC according to embodiment 2 of the present invention.
Fig. 3 is a schematic structural view of an FPC according to embodiment 3 of the present invention.
Fig. 4 is a schematic structural view of an FPC according to embodiment 4 of the present invention.
Fig. 5 is a schematic module diagram of a touch screen display module according to embodiment 5 of the present invention.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
Example 1
The present embodiment provides a method for manufacturing an FPC, as shown in fig. 1, the method includes the following steps:
and 101, drilling, copper deposition, etching and demolding are sequentially carried out on the base material to obtain the FPC.
In this embodiment, the metal layer is used as a test point, when the fault determination is performed on the TX/RX trace of the FPC, the fault location and determination of the TX/RX trace can be realized only by testing the impedance of the test point and comparing the measured impedance value with the reference value, and the fault detection of the FPC is greatly facilitated. Wherein the reference value is obtained by testing a normal FPC.
Example 2
On the basis of embodiment 1, as shown in fig. 2, in this embodiment, after step 102, the method further includes:
and 103, attaching the protective film with the hollow opening to the FPC, wherein the hollow opening is opposite to the metal layer.
When the FPC needs to be tested, the fault location and judgment of the TX/RX routing can be realized through testing the impedance of the test point only by uncovering the insulating layer.
In this embodiment, the insulating layer not only protects the metal layer and prevents it from being oxidized, but also prevents the FPC from interfering with signals of the touch screen when the FPC is applied to an electronic device such as a touch screen. The insulating layer can be made of PI or PET.
In this embodiment, in order to further avoid oxidation of the metal layer and influence on effective fault testing, the metal layer is made of an inert metal. Preferably, the metal layer is nickel gold. The thickness of the metal layer is set to 0.3 μm to 0.9. mu.m.
Example 3
The present embodiment provides an FPC, as shown in fig. 3, which includes a substrate 1, and a circuit 2 and TX/RX pins 3 on the substrate, wherein a metal layer 4 is plated on the TX/RX pins 3.
It should be noted that, according to actual requirements, a metal layer may be plated on all or part of TX/RX pins of the FPC.
In this embodiment, the metal layer is used as a test point, and when the fault determination is performed on the TX/RX trace of the FPC, the fault location and determination of the TX/RX trace can be realized only by testing the impedance of the test point, which greatly facilitates the fault detection of the FPC.
Example 4
On the basis of embodiment 3, as shown in fig. 4, in this embodiment, the FPC further includes: a protective film 5 and an insulating layer 6. The protective film 5 is provided with a hollow opening; the protective film 5 is pasted on the substrate 1 and the circuit 2 of the FPC, the hollowed-out opening is opposite to the metal layer 4, and the insulating layer 6 covers the metal layer 4.
When the FPC needs to be tested, the fault location and judgment of the TX/RX routing can be realized through testing the impedance of the test point only by uncovering the insulating layer.
In this embodiment, the insulating layer not only plays the effect of protection metal level, avoids its oxidation, and when FPC was applied to the touch-sensitive screen, the insulating layer can also avoid FPC to the signal interference of touch-sensitive screen. The insulating layer can be made of PI or PET.
In this embodiment, in order to further avoid oxidation of the metal layer and influence on effective fault testing, the metal layer is made of an inert metal. Preferably, the metal layer is nickel gold. The thickness of the metal layer is set to 0.3 μm to 0.9. mu.m.
Example 5
The present embodiment provides a touch screen display module, as shown in fig. 5, the touch screen display module includes a touch screen 11 and the FPC10 in any of the above embodiments, and the touch screen 11 is electrically connected to the FPC 10.
In this embodiment, when the touch screen display module breaks down, the touch screen display module does not need to be disassembled, and the fault location and judgment of the TX/RX wiring of the FPC can be realized by testing the impedance of the test point of the FPC, so that the touch failure point of the touch screen display module can be quickly located, and the detection of the touch screen display module is greatly facilitated.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (7)
1. A manufacturing method of an FPC is characterized by comprising the following steps: plating a metal layer on the TX/RX pin of the FPC subjected to etching and demolding treatment;
attaching a protective film with a hollow opening on the FPC, wherein the hollow opening is opposite to the metal layer;
covering an insulating layer on the metal layer;
and uncovering the insulating layer to test the FPC.
2. The FPC manufacturing method of claim 1, wherein the insulating layer is made of PI or PET.
3. The FPC manufacturing method according to claim 1, wherein the metal layer is an inert metal;
and/or the thickness of the metal layer is 0.3-0.9 μm.
4. The FPC comprises TX/RX pins, and is characterized in that metal layers are plated on the TX/RX pins;
the FPC further includes: a protective film and an insulating layer;
the protective film is provided with a hollowed-out opening;
the protective film is pasted on the FPC, and the hollowed-out opening is opposite to the metal layer;
the insulating layer covers the metal layer;
and the insulating layer is used for testing the FPC when being taken off.
5. The FPC of claim 4, wherein the insulating layer is made of PI or PET.
6. The FPC of claim 4,
the metal layer is inert metal;
and/or the thickness of the metal layer is 0.3-0.9 μm.
7. A touch screen display module is characterized by comprising a touch screen and the FPC as claimed in any one of claims 4-6;
the touch screen is electrically connected with the FPC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810712168.3A CN108925060B (en) | 2018-06-29 | 2018-06-29 | Touch screen display module, FPC and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810712168.3A CN108925060B (en) | 2018-06-29 | 2018-06-29 | Touch screen display module, FPC and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108925060A CN108925060A (en) | 2018-11-30 |
| CN108925060B true CN108925060B (en) | 2020-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810712168.3A Active CN108925060B (en) | 2018-06-29 | 2018-06-29 | Touch screen display module, FPC and manufacturing method thereof |
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| KR20130042993A (en) * | 2011-10-19 | 2013-04-29 | 주식회사 코디에스 | Driving integrated circuit pad, wiring film for testing display panel and method for preparing the same |
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| CN106304627A (en) * | 2015-05-13 | 2017-01-04 | 上海和辉光电有限公司 | A kind of test pad structure and preparation method thereof |
| CN206061273U (en) * | 2016-07-22 | 2017-03-29 | 广州恒利达电路有限公司 | A kind of flexible circuit board of anti-electrophoresis short circuit |
| CN107037924A (en) * | 2017-03-13 | 2017-08-11 | 深圳市骏达光电股份有限公司 | The manufacturing process of circuit board module, sense of touch module and sense of touch module |
| CN206698492U (en) * | 2017-03-30 | 2017-12-01 | 深圳市久信通科技有限公司 | A kind of FPC with the test of thin finger |
| KR20180036841A (en) * | 2016-09-30 | 2018-04-10 | 엘지디스플레이 주식회사 | Touch panel and inspection method of thereof, and liquid crystal display device having touch panel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120032734A (en) * | 2010-09-29 | 2012-04-06 | 삼성모바일디스플레이주식회사 | Touch screen panel and fabricating method thereof |
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2018
- 2018-06-29 CN CN201810712168.3A patent/CN108925060B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080093230A (en) * | 2007-04-16 | 2008-10-21 | (주)멜파스 | Touch sensor module and manufacturing method thereof |
| KR20130042993A (en) * | 2011-10-19 | 2013-04-29 | 주식회사 코디에스 | Driving integrated circuit pad, wiring film for testing display panel and method for preparing the same |
| CN106304627A (en) * | 2015-05-13 | 2017-01-04 | 上海和辉光电有限公司 | A kind of test pad structure and preparation method thereof |
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| CN206061273U (en) * | 2016-07-22 | 2017-03-29 | 广州恒利达电路有限公司 | A kind of flexible circuit board of anti-electrophoresis short circuit |
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| CN108925060A (en) | 2018-11-30 |
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