CN204272588U - A kind of display module with electromagnetic isolation structure - Google Patents
A kind of display module with electromagnetic isolation structure Download PDFInfo
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- CN204272588U CN204272588U CN201420833710.8U CN201420833710U CN204272588U CN 204272588 U CN204272588 U CN 204272588U CN 201420833710 U CN201420833710 U CN 201420833710U CN 204272588 U CN204272588 U CN 204272588U
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- display module
- pcb
- isolation structure
- electromagnetic isolation
- press box
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Abstract
The utility model discloses a kind of display module with electromagnetic isolation structure, comprise display screen and PCB, be provided with shield glass before described display screen, between described display screen and PCB, be provided with metal shielding board, described shield glass and metal shielding board ground connection respectively.The display module with electromagnetic isolation structure of the present utility model, on the basis not reducing display module display quality, carry out two pass shielding for the electromagnetic radiation produced when display module panel and the work of driving PCB circuit board, and in technique, achieve the integration of display module.The utility model is designed by comprehensive electromagnetic compatibility shielding, improves the Electro Magnetic Compatibility of product.
Description
Technical field
The utility model relates to the anti-electromagnetic interference technology of the display module of electronic equipment, specifically, is a kind of display module with electromagnetic isolation structure.
Background technology
Nowadays, electronic equipment is closely connected with the mankind.Work, the life of people be unable to do without electronic equipment.The portable electric appts such as mobile phone, panel computer is also more and more universal, and has very high update speed.
The display module panel of electronic equipment and driving PCB (Printed Circuit Board, printed circuit board (PCB)) operationally, all can outwards produce certain electromagnetic radiation, as being left intact, the Electro Magnetic Compatibility of complete machine can not meet instructions for use, and produces harm to human body.
Isolating a kind of method of electromagnetic interference that display module panel produces in prior art is adopt EMC(Electro Magnetic Compatibility, Electro Magnetic Compatibility) shield glass realizes electromagnetic shielding.But woven wire is pressed between two-layer shield glass by EMC shield glass, but sacrifices the display quality of product while providing electromagnetic shielding for product.What adopt due to the silk screen in EMC shield glass is the metal net of certain angle, and easily produce diffraction fringe, light transmittance is low, and the brightness of product, definition have decline to a certain degree.Further, this shield technology can only isolate display module panel produce EMI (Electro Magnetic Interference, electromagnetic interference), and can not isolation drive PCB produce EMI.
The electromagnetic isolation mode of existing PCB be on PCB, optionally apply insulating barrier after, more optionally apply conductive layer, and at least one making conductive layer be coupled in the grounding through hole of exposure.This one deck shielding between display screen and PCB can only isolate the EMI that PCB produces.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of electromagnetic interference both can isolated PCB and produce, and can isolate again the display module with electromagnetic isolation structure of the electromagnetic interference that display module panel produces, and can not reduce the display quality of display module.
In order to solve the problems of the technologies described above, the utility model provides a kind of display module with electromagnetic isolation structure, comprise display screen and PCB, shield glass is provided with before described display screen, metal shielding board is provided with, described shield glass and metal shielding board ground connection respectively between described display screen and PCB.
Further, described metal shielding board is bonded together by conducting resinl and described display screen.
Further, described shield glass is tin indium oxide ito glass.
Further, metal press box is also provided with before described shield glass.
Further, described metal press box is bonded together by conducting resinl and described shield glass.
Further, the surface of described metal press box is coated with nickel dam.
Further, described metal press box and described PCB are altogether.
Further, be tightly connected between described metal press box and described PCB.
Further, described metal press box is connected by buckle notch with between described PCB, bolt nut structure connects or screw connects.
Preferably, be provided with conductive adhesive tape between described metal press box and described PCB, the region that described PCB contacts with described conductive adhesive tape is without solder mask.
The display module with electromagnetic isolation structure of the present utility model, on the basis not reducing display module display quality, carry out two pass shielding for the electromagnetic radiation produced when display module panel and the work of driving PCB circuit board, and in technique, achieve the integration of display module.The utility model is designed by comprehensive electromagnetic compatibility shielding, improves the Electro Magnetic Compatibility of product.
Accompanying drawing explanation
Fig. 1 is the structural representation with display module one embodiment of electromagnetic isolation structure of the present utility model.
In figure: 1. metal press box, 2. conductive adhesive tape, 3. shield glass, 4. display screen, 5. metal shielding board, 6.PCB, 11. buckles, 61. draw-in grooves, 62. component mounting position.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, and to make those skilled in the art can understand the utility model being implemented better, but illustrated embodiment is not as to restriction of the present utility model.
As shown in Figure 1, the display module with electromagnetic isolation structure of the present utility model, comprises display screen 4 and PCB 6, and display screen 4 is provided with shield glass 3 above, metal shielding board 5 is provided with, shield glass 3 and metal shielding board 5 ground connection respectively between display screen 4 and PCB 6.Wherein, the electromagnetic interference that shield glass 3 produces for shielding display screen 4, the electromagnetic interference that metal shielding board 5 produces for shielding PCB 6.Preferably, metal shielding board 5 is bonded together by conducting resinl and display screen 4; Shield glass 3 is preferably tin indium oxide (Indium Tin Oxide, ITO) glass.
In addition, be also provided with metal press box 1 above at shield glass 3, metal press box 1 is bonded together by conducting resinl and shield glass 3.Nickel dam can be coated with, to strengthen the electric conductivity of metal press box 1 on the surface of metal press box 1.
Metal press box 1 and PCB 6 are altogether, and be tightly connected between metal press box 1 and PCB 6, shield glass 3, these twice of metal shielding board 5 are made to shield design final integrated with display screen 4 on technique realizes, metal press box 1 and the skin of PCB 6 as integrated module.Can be connected by the mode of buckle and draw-in groove between metal press box 1 with PCB 6.Such as, in embodiment illustrated in fig. 1, metal press box 1 is provided with buckle 11, PCB 6 is provided with draw-in groove 61, buckle 11 and draw-in groove 61 cooperatively interact metal press box 1 together with PCB 6 compact siro spinning technology.Other connected mode can also be adopted between metal press box 1 and PCB 6, such as, adopt bolt through metal press box 1 and PCB 6, then use fastening nuts; Or adopt screw to pass in the screw of the rear rotational fastener of PCB 6 on metal press box 1.
Conductive adhesive tape 2 is provided with, by conductive adhesive tape 2 reinforcing module seal between metal press box 1 and PCB 6.The region that PCB 6 contacts with conductive adhesive tape 2, without solder mask, can realize electrical contact with conductive adhesive tape 2 to make this region of PCB.For the PCB 6 with solder mask, welding resistance process can be gone to this region.By the metal press box 1 final assembling with PCB 6, realize each several part commonly.Component mounting position 62 on PCB 6 is positioned at the mid portion of PCB 6.
The utility model and traditional EMC glassy phase ratio, have the following advantages:
A) without detriment to brightness and the definition of display, the high request of user of service to display quality is met;
B) shield main EMI source, improve complete machine electromagnetic compatible.Because the topmost EMI source of display module is not from display screen itself, but from providing the PCB of high frequency mainboard of signal for display screen, the utility model not only shields the electromagnetic radiation that display screen itself produces, more shield the electromagnetic radiation that PCB produces, make display module possess good Electro Magnetic Compatibility;
C) in addition, the metal shielding board between display screen and PCB is also for complete machine provides good cooling mechanism.
The above embodiment is only for absolutely proving the preferred embodiment that the utility model is lifted, and protection range of the present utility model is not limited thereto.The equivalent alternative or conversion that those skilled in the art do on the utility model basis, all within protection range of the present utility model.Protection range of the present utility model is as the criterion with claims.
Claims (10)
1. there is a display module for electromagnetic isolation structure, comprise display screen and PCB, it is characterized in that, before described display screen, be provided with shield glass, between described display screen and PCB, be provided with metal shielding board, described shield glass and metal shielding board ground connection respectively.
2. the display module with electromagnetic isolation structure according to claim 1, is characterized in that, described metal shielding board is bonded together by conducting resinl and described display screen.
3. the display module with electromagnetic isolation structure according to claim 1, is characterized in that, described shield glass is tin indium oxide ito glass.
4. the display module with electromagnetic isolation structure according to claim 1 or 3, is characterized in that, is also provided with metal press box before described shield glass.
5. the display module with electromagnetic isolation structure according to claim 4, is characterized in that, described metal press box is bonded together by conducting resinl and described shield glass.
6. the display module with electromagnetic isolation structure according to claim 4, is characterized in that, the surface of described metal press box is coated with nickel dam.
7. the display module with electromagnetic isolation structure according to claim 4, is characterized in that, described metal press box and described PCB are altogether.
8. the display module with electromagnetic isolation structure according to claim 7, is characterized in that, is tightly connected between described metal press box and described PCB.
9. the display module with electromagnetic isolation structure according to claim 8, is characterized in that, described metal press box is connected by buckle notch with between described PCB, bolt nut structure connects or screw connects.
10. the display module with electromagnetic isolation structure according to claim 8, is characterized in that, is provided with conductive adhesive tape between described metal press box and described PCB, and the region that described PCB contacts with described conductive adhesive tape is without solder mask.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420833710.8U CN204272588U (en) | 2014-12-25 | 2014-12-25 | A kind of display module with electromagnetic isolation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420833710.8U CN204272588U (en) | 2014-12-25 | 2014-12-25 | A kind of display module with electromagnetic isolation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204272588U true CN204272588U (en) | 2015-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420833710.8U Active CN204272588U (en) | 2014-12-25 | 2014-12-25 | A kind of display module with electromagnetic isolation structure |
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| CN (1) | CN204272588U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493351A (en) * | 2018-01-31 | 2018-09-04 | 云谷（固安）科技有限公司 | The preparation method of thin-film packing structure, display device and display device |
| CN109618030A (en) * | 2018-12-20 | 2019-04-12 | 维沃移动通信有限公司 | A kind of terminal device |
| WO2022222803A1 (en) * | 2021-04-19 | 2022-10-27 | Mettler-Toledo (Changzhou) Measurement Technology Ltd. | Liquid crystal display screen with improved resistance to electromagnetic interference |
-
2014
- 2014-12-25 CN CN201420833710.8U patent/CN204272588U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493351A (en) * | 2018-01-31 | 2018-09-04 | 云谷（固安）科技有限公司 | The preparation method of thin-film packing structure, display device and display device |
| CN109618030A (en) * | 2018-12-20 | 2019-04-12 | 维沃移动通信有限公司 | A kind of terminal device |
| CN109618030B (en) * | 2018-12-20 | 2021-07-13 | 维沃移动通信有限公司 | Terminal equipment |
| WO2022222803A1 (en) * | 2021-04-19 | 2022-10-27 | Mettler-Toledo (Changzhou) Measurement Technology Ltd. | Liquid crystal display screen with improved resistance to electromagnetic interference |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |