TEL:+86-15812821892  E-mail: lushufen@dongchengdg.com

light guide film membrane switch | Dongchen

Multiregion spectroscopic LGF:
On the basis of conventional LGF, a layer of 0.3mm black foam gum is added to block the transmission of light and achieve the effect of multi-region light splitting.
LGF,It has the characteristics of ultra-thin, which does not affect the feel, uniform light emission, and many changes in color. Its working principle is to use the principle of light reflection and refraction, combined with special optical software design, to do microstructure processing on the optical PC film, thereby expanding the "point light source" into a "surface light source". The light beam propagates from the medium at a suitable angle and density, so as to achieve the excellent effect of uniform light emission.

Multiregion spectroscopic LGF

On the basis of conventional LGF, a layer of 0.3mm black foam gum is added to block the transmission of light and achieve the effect of multi-region light splitting.

LGF,It has the characteristics of ultra-thin, which does not affect the feel, uniform light emission, and many changes in color. Its working principle is to use the principle of light reflection and refraction, combined with special optical software design, to do microstructure processing on the optical PC film, thereby expanding the "point light source" into a "surface light source". The light beam propagates from the medium at a suitable angle and density, so as to achieve the excellent effect of uniform light emission.

图片001

Black foam + glue + shading film + diffusion film + LGF + water glue + cover layer + spacer layer + metal dome layer + protective film layer

 1.  Black foam + glue

2. Shading film(Black and white fingerprint adhesive)

3. LGF(PC)

4. (3M7533)

5. (Mylar)

6. Spacer)

7. (Metal Dome)

8.  protective film layer


 Product Specification:

1. Black foam + glue: the thickness is generally 0.28 ~ 0.32mm.The usual thickness is 0.32mm

2. Optical PC: common thickness of 0.125mm, light transmittance of >90%

3. Water glue: 3M7533

project

thickness(mm)

initial force

retentivity(hr/kg*inch)

adhesive force(kgf/inch)

Detection Tool

thickness gauge

Tape initial viscosity tester

Supplier supply

Supplier supply

Colour

Transparent

thickness of adhesive:0.018~0.025

The adhesive rolling distance of corresponding steel balls is less than 10cm

8↑

0.6↑

base material:  0.025/0.05/0.075/0.1

White

thickness of adhesive:0.018~0.025

The adhesive rolling distance of corresponding steel balls is less than 10cm

8↑

0.6↑

base material:  0.025/0.05/0.075/0.1

One side is black, the other side is white

thickness of adhesive:0.018~0.025

The adhesive rolling distance of corresponding steel balls is less than 10cm

8↑

1.1↑

base material:  0.025


Note: (1) metal DOME substrate: SUS301;(2) vertex: down Dimple

project

positioning hole to positioning hole(mm)

Positioning hole to shape(mm)

Shape to shape(mm)

Hole diameter(mm)

Positioning hole to metal dome(mm)

metal dome to metal dome(mm)

sample

Manual sample

±0.15

±0.15

±0.15

±0.1

±0.2

±0.2

Mould sample

±0.1

±0.1

±0.1

+0.08/-0

±0.12

±0.12

Note: (1) the positioning hole are minimum aperture Φ 1.0 mm;

(2) the minimum aperture of SP sheet is 0.15mm larger than that of shrapnel.The width of gas groove of SP sheet is 1.0~1.2mm, and the wiring mode is: two to three keys are connected, and avoid components to avoid dust.

4. The sample delivery

 

 

sample


 

Model

The new model(5~20pcs)

The old model(5~20pcs)

Manual sample

3 ~ 5 working days

3 ~ 5 working days

Mould sample

1 working day after the mold returns

2 ~ 3 working days

Mold delivery time: 6-7 working days

Note: 1. The life test conditions are as follows: the plastic flat head of the hitting head;Diameter: Φ 1.8;Speed: 2~3 times/second;Strike power: 400-500g.

2. Determination of life span: before and after the life span impact, the change rate of elasticity and feel of the DOME is less than 30%, and the metal dome is not broken.





CONTACT

  (+86)-15812821892
  lushufen@dongchengdg.com
    Dongcheng Huimei Technology Park,
Chashan Town, Dongguan, Guangdong, 
China

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