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Collection of common assembly problems and solutions for silicone conductive connectors/zebra strips
2024-09-02 10:02:29
Environmentally friendly material revolution: the sustainable development path of silicone conductive zebra connectors
Application principle and usage of conductive Zebra connector
1.When connecting, a structural part is needed to fix the LCD, conductive rubber strip and PCB together. Conductive rubber strip, conductive strip and conductive silicone strip are the common names for conductive silicone connectors.
2.No welding is required, thus eliminating damage to thermal devices. Conductive silicone rubber can be used to connect some electronic components that are easily damaged by heat, instead of welding.
3,Conductive zebra connectors can replace welding in high temperature and radiation environments. At this time, the conductive rubber not only provides a good conductive path, but also keeps the connection point in a sealed state, which plays a role in moisture and corrosion resistance; "Zero input force" prevents the breakage of the LCD glass; it will not damage the contact surface;
3.The silicone zebra connector will form an airtight seal to protect the printed circuit board from atmospheric corrosion in an adverse environment, ensuring a good connection, with buffering, neutralizing and shockproof effects; it is easy to adapt to a variety of contact methods; the display can be inserted or removed multiple times.
5.Cut a small piece of conductive tape to repair the electrical contact of the remote control. The iron sheet at the battery electrode of the remote control is easily corroded. If you use conductive tape to apply a little on the electrode, it will not rust, it is waterproof, and it is easy to replace.So it is a good choice.
What is the P value in conductive adhesive strips/conductive connectors? How to choose the Pitch value?
P value is also called Pitch value, which is used to guide the conductive layer in the middle of the electric rubber strip.
How should the P value be chosen?
The principle is to have 2~3+ connectors on the pitch (width) of the LCD or PCB. The more connectors, the better the conductivity.
Example:
a. When the pitch on the LCD is 0.5mm, the general conductive width is about 0.3, so choose a connector of 0.1mm, and there will be three connector pitches on the top.
b. When the pitch on the LCD is 1.0mm, the general conductive width is 0.5~0.6mm, so choose a connector of 0.18mm, and there will be two to three connector pitches on the top.
C. When the pitch on the LCD is 1.5mm, the general conductive width is 0.75~1.0mm, so choose a connector of 0.25mm, and there will be three connector pitches on the top.
Note: Special case: Because the connector is made of silicone, it may be tilted during the cutting process. The general angle tolerance is 1", so the higher the height, the smaller the connector pitch, and the better the conductive effect.
Selection of the thickness of the conductive layer in the conductive adhesive strip/conductive connector Selection of the size of W' on the connector
1): Normally, it is between one third and one half of the total thickness.
2): If the height, length, width, and pitch are all OK, but the LCD display is dark, it means that the resistance is too high, so increasing the width of the conductive layer can improve it, 0.6mm, 0.8mm, 1.0mm.
3): However, if it is a transparent sandwich strip type, the foam strip type must consider the side thickness, which must be at least 0.3mm to produce.
Basic general parameters of conductive rubber strips/conductive connectors
| ltem | code | unit | ||||
| pitch | P | mm | 0.05 | 0.1 | 0.18 | 0.25 |
| Length | L | mm | ||||
| Height | H | mm | ||||
| width | W | mm | ||||
| conduct width | TC | mm | 0.025 | 0.05 | ||
| lnsulatorwidth | TI | mm | 0.025 | 0.05 | ||
| core eidth | CW | mm | 0.3-1 | 1.1-4 |
The common P value of conductive rubber strips is 0.1 or 0.18. If the P value is less than 0.1, the price will be higher. The common hardness of conductive rubber strips is 45 degrees. If it is less than 45 degrees, the price will also be different. The common resistivity of conductive rubber strips is 6 ohms per cm
Length: The length of the conductive adhesive strip is 0.5mm shorter than the length of the display glass.
Height: The height between the LCD and the PCB × (1.08-1.15), that is, the compression ratio is 8%-15%, and the optimal compression ratio is 10%.
Width: LCD edge width × (0.9-0.95)
Pitch: The ratio of the width of each PCB gold finger to the adhesive strip is ≥3-5, that is, there are 3-5 conductive layers on each gold finger to ensure good conductivity.
Can the length of the Conductive tape/conductive connector be cut as needed?
Can the length of the conductive rubber strip be cut at will according to actual needs? For example, if the required length is 50mm and the length of the conductive rubber strip is 80mm, and I cut 30mm with scissors, will it affect its performance?
In fact, the conductive rubber strip is like a wire, you can cut it as long as you want! The factory also produces conductive rubber strips of different specifications in the same process. First, large pieces of conductive rubber strips are produced, and then they are cut according to the specifications required by the customer, and finally the conductive rubber strips of the specifications required by the customer are obtained!
If it is cut manually, it is easy to cut unevenly or at an angle. This has little effect on the length direction, but the height and thickness directions cannot be cut by yourself. You can contact our manufacturer to customize it for you! Click the link to learn more：https://www.cmaisz.com/
What should I do if the zebra strip/conductive connector has poor contact?
The structural design of the product is to use conductive rubber strips, and its fixing structure is generally designed with screws and buckles.
The conductive rubber strip has poor contact. The most common phenomenon in LCD displays is dim, light, missing strokes, etc. The main reason is the assembly tolerance of the overall product. Since each batch of the same model of each original device will have dimensional errors, our structural engineers are required to accurately calculate the required size of the conductive rubber strip. However, once other devices are fixed, it is often very difficult to improve them. Here, modifying the size of the conductive rubber strip becomes simple and easy to use.
Can I still use the conductive tape/conductive connector after it has been pulled?
It is recommended not to use the conductive tape after it has been pulled.
The conductive tape is made up of a very thin layer of insulator and a layer of conductor, which visually appears as a zebra pattern.
Since the insulator layer is very thin, the insulating protective layer will be torn after being pulled, causing the adjacent two conductor layers to be conductive, which may cause a short circuit.
How long is the service life of the conductive strip zebra strip?
The life of molded high-temperature silicone products is usually more than 10 years, but if you want to guarantee it to you, this cannot be guaranteed. After all, the conductive rubber strip is not used alone, it is also related to many other accessories. Generally, the product can be used for five to six years.
Summary of issues related to the resistance of conductive tape/conductive connectors: How to measure it?
Conductive strip zebra strip is a weak conductive product, the resistance is not fixed, and it is impossible to measure a constant resistance value.
Is the resistance of the conductive tape/conductive connector fixed within a certain range?
When the conductive rubber strip is first touched and measured, the resistance will be several thousand ohms or even not conductive. As the pressure is pressed down to a certain compression ratio, the resistance will decrease. After reaching the appropriate compression ratio, the resistance will generally stabilize at around 200 ohms.
What is the volume resistivity of conductive tape/conductive connector?
The volume resistivity of the rubber strips we make is around 6 Ω.cm.
How do I know if the resistance of the conductive rubber strip/conductive connector is consistent with The sample?
When making samples, they can be sealed after confirmation. If there is a problem with the bulk goods later, the sealed samples can be found and compared with the problematic goods under the same compression ratio and test conditions to rule out whether the defect is caused by resistance problems.
How to prevent dust and pollution during the production of conductive rubber strips?
At present, all manufacturers on the conductive rubber strip production line have not used dust-free workshops for production. During the production process, Shenzhen Changmai Technology Control has a special team to clean and dust the production equipment and workshop before starting work every day, and only start work after cleaning. During the production process, materials are stacked in each link and covered with film to prevent dirt and dust. Finally, in the packaging link, workers will conduct another inspection. If dust and pollution are found, they will be sorted out and discarded or processed. After the control of the above links and the quality control of special production quality inspectors, we can fully guarantee that the products we ship out will not affect the quality.
Conductive rubber strip application areas
Conductive tape can be used for: LCD COB modules.
Digital display instruments: automobile meters, air conditioning remote controllers, multimeters, calipers, gas detectors.
Consumer electronics: electronic timers, electronic computers, electronic scales, electronic clocks, radios.
Medical equipment: forehead thermometer, blood pressure monitor. Smart home: treadmill, thermometer, smoke sensor.
Electronic toys: game consoles, children's early education machines.
Our products not only excel in electrical performance and durability, but also have flexible design capabilities and can be customized according to your specific needs. Whether you are looking for connectors suitable for 5G technology or need accessories to support high-end displays, our conductive silicone connectors can provide you with ideal solutions.
For more information about our products, please visit our website https://www.cmaisz.com/ or contact our sales team directly. We will wholeheartedly provide you with the best quality products and services to help your electronic devices stand out in the 5G era and future technologies.
Through continuous innovation and optimization, we are committed to becoming a leader in the field of conductive silicone connectors and providing strong support and protection for your electronic devices. Let us work together to meet the future technological challenges and create a new era in the electronics industry.
For more information,please contact us:
SHENZHEN CHANGMAI TECHNOLOGY Co.,LTD
Conductive rubber strips (zebra strips) characteristics and
applications explained
Silicone product 、Zebra connectors customization
+8618988796970 (Sherry)
Website: https://www.cmaisz.com/
Address:2003,LongGuangJiuZuan Building 5A,Tenglong Road，Hongshan, Longhua District, ShenZhen,518131
Email:contact@cmaisilicone.com