Archive for the ‘Dome Array’ Category

The quality and price of dome sheet analysis

Friday, November 19th, 2010

Now the quality and price of mobile phone metal dome sheet are a little confused in our domestic makeketing, some manufacturers in order to be able to get orders, repeated request to ask for lower prices, but lower price is no guarantee for quality. if the product quality is no guarantee so that the company can’t survive for long time. Our company dedicate to quality-oriented, but also to provide the best price.

1, The quality of mobile phone dome sheet depends on the metal domes, the materials of metal domes as follows:
 
Raw Material   life cycles    Click Ratio     Force            Remark

Japan         1,000,000       55%            Stable               best quality
Kearo         700,000         45%           less stable         better quality
China         500,000         35%          General feeling    good quality

Different metal dome materials determin the different prices of dome sheets.

2, Other dome sheet materials are: Myalr, PET, Silver.

3, Silver is also divided into: The USA silver,Taiwan silver,domestic silver. Different silver for the different resistanceof dome array, but also with different price.

We put these materials of metal dome sheet announced, we just want to provide a reference for you, I hope we should not request to ask the lowest price, we also should consider the quality.

Our company strictly to ensure quality of dome sheets, welcome customers to inquiry of our snap dome and dome sheet!

Ten reasons of tactile dome dirty in dome array

Thursday, October 28th, 2010

Today follow me to know the ten reasons of tactile dome dirty in dome array have caused, analyze the reasons and find solutions to problems to ensure the quality of dome array(dome sheet).

1. Tactile dome itself dirty:  change to the clean metal dome(brown rust stains or white spots are tactile dome dirt;

2. Tactile dome collection table or the vibration plate are dirty: the work surface need to be cleaned before the production process;

3. Stamping die dirty itself: the stamping dies need to be cleaned before production (usually is grease.);

4. Electrical inspection process dirty: clean before working (usually oil);

5. Protective film composition problems caused dome array pollution: choose better quality protective film (usually white spots minor impurities);

6. Materials electrostatic strong absorption caused Dome Array stolen stolen sewage pollution: workshop humidity adjustment (usually fibers, dander minor impurities);

7. Hand touch tactile dome directly: work with finger cover (usually fingerprint);

8. Anhydrous alcohol (orange water) wipe casued pollution: use the clean alcohol, if they are “pollution” needs immediate replacement (generally white spots minor impurities);

9. The working environment and the operating table dirty: Clean the table before woking (usually particulate impurities, or fibers, dander minor impurities);

10. Storehouse dirty: keep in clean containers (usually particle impurities, or fibers, dander and other minor impurities.)

We have learned above ten reasons and solutions of the tactile dome dirty in dome array, so we can be in control of the production process, and to prevent the production of defective products.

How to peel off the dome array?

Monday, September 13th, 2010

Normally, when we make the finished dome array, then how to peel off the dome array from the sheet rightly?

The right way is to use the forceps or other tooling to peel off the dome array from the protective film, please don’t use the hand. If you use hand to peel off, you will stain the adhesive on the behind of dome array, then it won’t stick on the printed circuit boards firmly. Please aslo make sure the circuit boards no stain,dust,dirt.

Please see below picture:
Peel off dome arrayby tooling
I think you know the important to peel off the dome array by tooling, please follow up with our required.

Related posts:
1. The assembling instruction of dome array;
2. How can assemble dome array on PCB firmly?
3. Laser cutting to make dome array;
4. The structure of dome array.

The function of EMI on metal dome array

Tuesday, July 27th, 2010

As you know for EMI dome array, there is an EMI layer on the top of metal dome array. So what’s the function of EMI? OK, follow me:

EMI dome array is that there is a sliver paste is printed on the top layer as ESD (electrostatic Discharge Control). It can help to reduce the electrostatic which maybe hamful to the other parts inside of the mobile phone, and to protect the product.There are also two “contact eyes”(we named) to let me electrostatic run way. The contact resistance can reduce to less than three ohm.

This item are mostly used in our china marketing, and used in the cellphone products. Do you need the dome array made into EMI? Please contact us for your required.

Related Posts:
1. The theory of metal dome work;
2. The structure of dome array;
3. Metal dome with 3M adhesive sheet.