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What is LGF Dome Array and How does it work ?
LGF metal dome array , which full name is Light Guide Film , it is a new design . which used to replace LED in function , in comparsion with LED , lighting Uniformity; When we add a LGF on current normal double layer or EMI dome array, it becomes a LGF dome array. It can achieve great result of light distribution.see from the design , the light under keypad is coming from the LED on PCB motherboard. We need to put about 8-10 pieces LED on each board, but if the design changed to use LGF, then we can save several LED, as well as SMT fee.
What is the LGF DESIGN PRINCIPLE & What is the Advantage ?
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.
PRODUCT PHOTOGRAP
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MAJIOR TECHNICAL PARAMETERS & ADVANTAGES OF METAL DOME ARRAY
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Item
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Description
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TECHNICAL INDEX
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1
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LONG LIFE-TIME
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Shape Type : Round , Oblong , 4-legged , Trianglar , Rectangular , Irregular
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Appearance Treatment Type : Stainless Steel ,Nickel plated , Silver Plated , Gold plated
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Dimple numbers : 0/1/3/4/5
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Life-time : 300~5000K Hits
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Force & Click Ratio : In compare of initial value , the change rate<30% after 1M hits
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2
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Click %
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Force:100gf~450gf , Tolerance :+/-20gf
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Click Ratio :50+/-10% ,
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3
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Stroke
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Custom in accordance with Customer's requirement
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4
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Dimension Tolerance
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Position dimension tolearance :+/-0.1mm
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5
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Weather-proof
Resistance
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Under the conditions of 55±2°C , R.H. 95%,Replacement 24H , resume 2H under the normal room temperature
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6
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Corrosion
Resistance
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High Temp. can bear : +70°C
Low Temp. can bear : -40°C
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7
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Tape Adhesive Test
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0.6↑(unit : kgf/inch)
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8
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Stable adhesive
Shrinkage Rate
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MD(%):0.5↓ CD(%):0.3↓
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9
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Small Instantant
Contact Resistance
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Nickel Plating <1Ω Stainless Steel <3Ω
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10
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Total Thickness
of Base Material
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0.05mm,0.075mm,0.1mm,0.15mm for normal thickness Spec.
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11
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Light-Guide Film Uniformity
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>75%
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F A Q
Q1: Are you Trading company or manufacturer ?
A: We are a Professional Trading & Manufacturer Integrated .
Q2 : Can you offer OEM Service ?
A: Surely Okay , we have Seasoned OEM service experience .
Q3: what is the Lead time of sample ?
A : It takes 2-7working days depends .
Q4: How fast can i get the Quotation ?
A : I am smart to understand what customers want , reply quickly , Sometimes you can receive my email within 10mins., even in deep evening such as 11P.m or 12P.m
Please do not hesitate to contact with us , if you have any inquires .
LGF Dome Array
FPC switch
FPC Dome Array
FPC
Membrane switch Panel
Membrane Switch
Backlight Module
Backlight module
Backlight panel
KEYBOARD LGF Module
Backlight source
Light guide dot mold customized
EVA Foam
Insulation Series
EMI Series
Water-proof Series
EVA Foam
EVA Foam 
LGF Dome Array 
