CN108366519A - A kind of shielding construction reducing display screen electromagnetic interference - Google Patents
A kind of shielding construction reducing display screen electromagnetic interference Download PDFInfo
- Publication number
- CN108366519A CN108366519A CN201810090702.1A CN201810090702A CN108366519A CN 108366519 A CN108366519 A CN 108366519A CN 201810090702 A CN201810090702 A CN 201810090702A CN 108366519 A CN108366519 A CN 108366519A
- Authority
- CN
- China
- Prior art keywords
- display screen
- vitellarium
- fpc
- electromagnetic interference
- body region
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/002—Casings with localised screening
- H05K9/0022—Casings with localised screening of components mounted on printed circuit boards [PCB]
-
- 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
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
-
- 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
- H05K1/0281—Reinforcement details thereof
-
- 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
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/002—Casings with localised screening
- H05K9/0039—Galvanic coupling of ground layer on printed circuit board [PCB] to conductive casing
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10227—Other objects, e.g. metallic pieces
- H05K2201/10371—Shields or metal cases
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
A kind of shielding construction reducing display screen electromagnetic interference, including display screen FPC and display screen drive IC, display screen FPC to have body region, vitellarium is extended on body region；The one side of vitellarium posts a shielded layer, which is electrically connected with the ground terminal on body region；Insulation double faced adhesive tape is posted in the another side of vitellarium, and the another side for the double faced adhesive tape that insulate is attached on display screen driving IC.Due to having the vitellarium extended, vitellarium two sides to have patch shielded layer and the structure for the double faced adhesive tape that insulate that can be realized with machine in FPC factories respectively, avoid manually participating in, greatly save production cost on the body regions FPC.
Description
Technical field
This application involves fields of communication technology, and in particular to a kind of shielding construction reducing display screen electromagnetic interference.
Background technology
Mobile phone, tablet resolution ratio are higher and higher at present, and the signaling rate between processor and display screen is getting faster,
Caused by harmonic wave can interfere with the signal transmission of antenna for mobile phone.
Existing solution is copper-surfaced foil or patch conductive fabric on the driving IC of display screen, and by conductive fabric or copper
Foil extends to be grounded on the flexible PCB (Flexible Printed Circuit, FPC) of display screen.
Because the driving IC surface potentials of display screen differ, to establish a capital be earthing potential, is needed first on the driving IC of display screen
One layer of insulation gummed paper is pasted on surface, then pastes one layer of conductive fabric or copper foil again, last conductive fabric or copper foil are connected to connecing for FPC
Ground terminal.
Above-mentioned Work machine is difficult to carry out, and need to occupy very more costs of labor, and due to being artificial by manually attaching
Operation, aligning accuracy is also not high enough, and insulation gummed paper and conductive fabric are very easy to crimping, and shield effectiveness is poor.
Invention content
A kind of shield effectiveness of the application offer is good, the shielding construction of reduction display screen electromagnetic interference at low cost.
According in a first aspect, provide a kind of shielding construction reducing display screen electromagnetic interference in a kind of embodiment, including it is aobvious
Display screen FPC and display screen drive IC, display screen FPC to have body region, vitellarium is extended on body region；The one of vitellarium
A shielded layer is posted in side, which is electrically connected with the ground terminal on body region；It is double that insulation is posted in the another side of vitellarium
The another side of face glue, the double faced adhesive tape that insulate is attached on display screen driving IC.
Preferably, shielded layer is electrically connected with the ground terminal on body region by grid copper sheet, and grid copper sheet is covered in display
On the data circuit for shielding FPC.
Preferably, bent area is also extended on body region, vitellarium is extended from bent area；It is exposed on bent area to have gold
The region for belonging to line is coated with insulating oil layer of ink.
Preferably, grid copper sheet is coated with insulating oil layer of ink.
Preferably, the shielded layer is copper foil or conductive fabric.
The shielding construction of reduction display screen electromagnetic interference according to above-described embodiment, prolongs due to having on the body regions FPC
The vitellarium of stretching, vitellarium two sides have the structure of patch shielded layer and the double faced adhesive tape that insulate can be in FPC factories machine reality respectively
It is existing, it avoids manually participating in.Since the artificial production cost of this link is major part, cost of labor, the vitellarium face of increased FPC are compared
Cost is almost negligible disregards for product, avoids manually participating in that production cost can be greatly saved.Then insulation double faced adhesive tape will manually be posted
It is attached on display screen driving IC with the vitellarium of shielded layer, since vitellarium is connected with body region, is manually being attached to vitellarium
When display screen is driven on IC, just easy sticker is not inclined, and shielded layer can align precisely, and the case where being not in crimping, shield effectiveness is good.Into
One step, due to generating the data circuit part for essentially consisting in driving IC and FPC of electromagnetic interference, the application is in shielded layer and main body
Ground terminal in area is electrically connected by grid copper sheet, and grid copper sheet is covered on the data circuit of display screen FPC, and grid copper sheet can
To be shielded well to the electromagnetic interference that data circuit generates, overall shield effectiveness is further improved.Further, exist
Insulating oil layer of ink is applied on bent area and grid copper sheet, can be made FPC that there is better pliability, be obtained better bending performance,
It in FPC bending processes, prevents physics from breaking, while exposed metal is protected, prevent conducting wire corrosion oxidation, can also prevent
Only short circuit.
Description of the drawings
Fig. 1 is the application FPC one side structure charts；
Fig. 2 is the parts Fig. 1 A enlarged drawings；
Fig. 3 is the another sides the application FPC structure chart；
Fig. 4 is the parts Fig. 3 B enlarged drawings.
Specific implementation mode
Below by specific implementation mode combination attached drawing, invention is further described in detail.Wherein different embodiments
Middle similar component uses associated similar element numbers.In the following embodiments, many datail descriptions be in order to
The application is better understood.However, those skilled in the art can be without lifting an eyebrow recognize, which part feature
It is dispensed, or can be substituted by other elements, material, method in varied situations.In some cases, this Shen
Please it is relevant some operation there is no in the description show or describe, this is the core in order to avoid the application by mistake
More descriptions are flooded, and to those skilled in the art, these relevant operations, which are described in detail, not to be necessary, they
It can completely understand relevant operation according to the general technology knowledge of description and this field in specification.
It is herein component institute serialization number itself, such as " first ", " second " etc., is only used for distinguishing described object,
Without any sequence or art-recognized meanings.And " connection ", " connection " described in the application, unless otherwise instructed, include directly and
It is indirectly connected with (connection).
Embodiment one：
- 2 are please referred to Fig.1, the application reduces the shielding construction of display screen electromagnetic interference, including display screen FPC and display
Screen drives IC, display screen FPC to have body region 1, is also extended with bent area 2 on body region 1, vitellarium is extended on bent area 2
3；On the sides FPC shown in Fig. 1-2, a shielded layer is posted in vitellarium 3, which can be with copper foil or conductive fabric, shielded layer
It is electrically connected by grid copper sheet 4 with the ground terminal on body region, grid copper sheet is covered on the data circuit of display screen FPC, net
Lattice copper sheet is coated with insulating oil layer of ink.
Wherein, the material of grid copper sheet and copper foil is copper Cu.
On the sides FPC shown in Fig. 3-4, insulation double faced adhesive tape is posted in vitellarium 3, and is then close to show on insulation double faced adhesive tape
Display screen drives IC, exposed on bent area to have the region of metal wire to be coated with insulating oil layer of ink 5.
Green oil or butter may be used in above-mentioned dielectric ink.
Green oil chemical composition is a kind of acrylic acid oligomer.As a kind of protective layer, it is not required to weld coated in printed circuit board
On the circuit and base material connect, or it is used as solder resist.Purpose is that digital preservation is formed by line pattern.
Green oil mainly has following functions：
(1) physical breakage of conductor circuit is prevented；
(2) in welding procedure, the short circuit generated by bridging is prevented；
(3) it is only welded in the part that must be welded, solder is avoided to waste；
(4) Cu-W ore deposit of butt welding splicing groove is reduced；
(5) degradation of insulation, corrosion caused by the outside environmental elements such as dust, moisture content are prevented；
(6) there is high-insulativity, make it possible the densification of circuit.
Embodiment two：
In actual production, there are other Cell Phone Designs for not needing bent area, the present embodiment proposes thus.It compares
Embodiment one, other structures all same, the difference is that only, not have bent area in FPC, vitellarium is directly from body region
Extend.
Use above specific case is illustrated the present invention, is merely used to help understand the present invention, not limiting
The system present invention.For those skilled in the art, according to the thought of the present invention, can also make several simple
It deduces, deform or replaces.
Claims (5)
1. a kind of shielding construction reducing display screen electromagnetic interference, including display screen FPC and display screen drive IC, feature to exist
In：Display screen FPC has body region, and vitellarium is extended on body region；The one side of vitellarium posts a shielded layer, the screen
Layer is covered to be electrically connected with the ground terminal on body region；Insulation double faced adhesive tape is posted in the another side of vitellarium, the double faced adhesive tape that insulate it is another
Face paste is on display screen driving IC.
2. reducing the shielding construction of display screen electromagnetic interference as described in claim 1, which is characterized in that shielded layer and body region
On ground terminal be electrically connected by grid copper sheet, grid copper sheet is covered on the data circuit of display screen FPC.
3. reducing the shielding construction of display screen electromagnetic interference as described in claim 1, which is characterized in that also extend on body region
There are bent area, vitellarium to extend from bent area；It is exposed on bent area to there is the region of metal wire to be coated with insulating oil layer of ink.
4. reducing the shielding construction of display screen electromagnetic interference as claimed in claim 2, which is characterized in that grid copper sheet is coated with absolutely
Edge ink layer.
5. reducing the shielding construction of display screen electromagnetic interference as described in claim 1, which is characterized in that the shielded layer is copper
Foil or conductive fabric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810090702.1A CN108366519A (en) | 2018-01-30 | 2018-01-30 | A kind of shielding construction reducing display screen electromagnetic interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810090702.1A CN108366519A (en) | 2018-01-30 | 2018-01-30 | A kind of shielding construction reducing display screen electromagnetic interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108366519A true CN108366519A (en) | 2018-08-03 |
Family
ID=63007314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810090702.1A Pending CN108366519A (en) | 2018-01-30 | 2018-01-30 | A kind of shielding construction reducing display screen electromagnetic interference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108366519A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109068560A (en) * | 2018-10-17 | 2018-12-21 | 南京沃福曼医疗科技有限公司 | A method of improving the anti-radio-frequency radiation interference of electromagnetic field of OCT device display |
| CN113031699A (en) * | 2021-03-15 | 2021-06-25 | 维沃移动通信有限公司 | Screen assembly of terminal and terminal equipment |
| CN113063340A (en) * | 2021-03-30 | 2021-07-02 | 天津飞旋科技股份有限公司 | Inductance type displacement sensor |
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| JP2007036086A (en) * | 2005-07-29 | 2007-02-08 | Seiko Epson Corp | Semiconductor device and liquid crystal module |
| CN101262737A (en) * | 2007-02-02 | 2008-09-10 | 三星电子株式会社 | Flexible printing circuit film and display device possessing the film |
| CN202652687U (en) * | 2012-05-25 | 2013-01-02 | 苏州优尔嘉电子有限公司 | Flexible circuit board |
| CN104077572A (en) * | 2014-07-02 | 2014-10-01 | 南昌欧菲生物识别技术有限公司 | Fingerprint recognition detection assembly and terminal device |
| JP2016142801A (en) * | 2015-01-30 | 2016-08-08 | 京セラディスプレイ株式会社 | Liquid crystal display device |
| CN206422967U (en) * | 2016-10-31 | 2017-08-18 | 浙江近点电子股份有限公司 | A kind of FPC components |
-
2018
- 2018-01-30 CN CN201810090702.1A patent/CN108366519A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007036086A (en) * | 2005-07-29 | 2007-02-08 | Seiko Epson Corp | Semiconductor device and liquid crystal module |
| CN101262737A (en) * | 2007-02-02 | 2008-09-10 | 三星电子株式会社 | Flexible printing circuit film and display device possessing the film |
| CN202652687U (en) * | 2012-05-25 | 2013-01-02 | 苏州优尔嘉电子有限公司 | Flexible circuit board |
| CN104077572A (en) * | 2014-07-02 | 2014-10-01 | 南昌欧菲生物识别技术有限公司 | Fingerprint recognition detection assembly and terminal device |
| JP2016142801A (en) * | 2015-01-30 | 2016-08-08 | 京セラディスプレイ株式会社 | Liquid crystal display device |
| CN206422967U (en) * | 2016-10-31 | 2017-08-18 | 浙江近点电子股份有限公司 | A kind of FPC components |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109068560A (en) * | 2018-10-17 | 2018-12-21 | 南京沃福曼医疗科技有限公司 | A method of improving the anti-radio-frequency radiation interference of electromagnetic field of OCT device display |
| CN113031699A (en) * | 2021-03-15 | 2021-06-25 | 维沃移动通信有限公司 | Screen assembly of terminal and terminal equipment |
| CN113063340A (en) * | 2021-03-30 | 2021-07-02 | 天津飞旋科技股份有限公司 | Inductance type displacement sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180803 |
|
| WD01 | Invention patent application deemed withdrawn after publication |