LGF, at least one surface out of front and rear surfaces of the light guide film is formed with a pattern such that density increases as distanced from a light source to allow light to be uniformly supplied to the keypad, or is concentratively formed with a pattern at a particular region of the light guide film to allow the light to be concentratively supplied to a particular region of the keypad.
Luminescent ink is printed on the graphic layer, primarily button area;
Metallic ink such as silver mirror ink is printed on graphic layer;
Electroplated coating on whole PET layer is deplated.
MAJIOR TECHNICAL PARAMETERS & ADVANTAGES OF METAL DOME ARRAY
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Item | Description | TECHNICAL INDEX |
1 | LONG LIFE-TIME |
Shape Type : Round , Oblong , 4-legged , Trianglar , Rectangular , Irregular
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Appearance Treatment Type : Stainless Steel ,Nickel plated , Silver Plated , Gold plated | ||
Dimple numbers : 0/1/3/4/5 | ||
Life-time : 300~5000K Hits | ||
Force & Click Ratio : In compare of initial value , the change rate<30% after 1M hits | ||
2 |
Click % | Force:100gf~450gf , Tolerance :+/-20gf |
Click Ratio :50+/-10% , | ||
3 | Stroke | Custom in accordance with Customer's requirement |
4 | Dimension Tolerance | Position dimension tolearance :+/-0.1mm |
5 |
Weather-proof Resistance |
Under the conditions of 55±2°C , R.H. 95%,Replacement 24H , resume 2H under the normal room temperature |
6 |
Corrosion Resistance |
High Temp. can bear : +70°C Low Temp. can bear : -40°C |
7 | Tape Adhesive Test | 0.6↑(unit : kgf/inch) |
8 |
Stable adhesive Shrinkage Rate |
MD(%):0.5↓ CD(%):0.3↓ |
9 |
Small Instantant Contact Resistance |
Nickel Plating <1Ω Stainless Steel<3Ω |
10 |
Total Thickness of Base Material |
0.05mm,0.075mm,0.1mm,0.15mm for normal thickness Spec. |
11 | Light-Guide Film Uniformity | >75% |
Front Panel can be finished within 24 hours at the earliest.
No MOQ limited.
Different quantity, Different price depends.
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