- LGF metal dome array is a new design with the purpose of improving current one.
- As everyone knows, 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.
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- LGF, which full name is Light Guide Film. 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.
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- 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.
- ?
- On the motherboard of mobile phone, through the optical refraction, only 1~4 pcs
- LED will be enough for soft and high light luminance, if using our LGF dome array
- (mobile phone LGF). At the same time, we can adjust luminance of the black area
- during the design to achieve the value to 30CD/M2.
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- Our LGF dome array can be used widely in high value added mobile phone, solving
- the problem of uneven of luminance, high power-consumption, big room space
- requirements and high costing. We can make LGF dome array in various color and
- shape, also adjust different artwork to make LGF, such as printing, mould punching, etc.
- Please contact us for more information about LGF dome array.
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| Character: |
- Good lighting result, even luminance and high intensity of light
- Soft, flexibility and elasticity, thickness is about 0.125mm which does not need too much space.
- Save LED & power consumption, two LED will be enough for small area mobile phone LGF.
- No special request for electrical trace
- Great stability, long durability, the life cycles can reach up to 1 million times.
- When assembly with metal dome array, LGF will not affect the clicking feeling.
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| Structure |
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|
| Technical Parameter |
| Total Height: |
0.28-0.45 mm |
|
| Travel: |
0.13-0.30 mm |
| Scope of Force: |
100-400 gf |
| Tolerance of Force: |
±25 gf |
| Click Ratio: |
>30% |
| Life Cycles: |
>1 Million Cycles |
| Salt and Fog Examination: |
v35±2°C, 5±0.1%, 48H |
| Working Temperature: |
-20°C-50°C |
| Working Humidity: |
Under 100%RH |
| Touch Resistance: |
<1 ohm |
| ESD Resistance: |
<3 ohm |
| Dimension Tolerance: |
±0.05-±0.15mm | |
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