Audio switch / Control navigation switch / Shin-Etsu Polymer

Audio(Control navigation switch)

characteristics		Several options are available.

1.	Inner-type: The Shin-Etsu Rubber-Contact futures high actuation force, high stroke and good click feeling.
2.	HG-type: HG-Type characteristics back-lit key tops and soft feeling. The HG-Type Rubber Contact lights up only the letter that is illuminated, via a light-transmissitive material. The HG-type was developed and marketed by Shin-Etsu Polymer, and is the first of its kind in the world.
3.	FB-type: FB-type characteristics hard feeling in spite of plastic knobs and back lit function. Also film can be printed various colors and graphics on back side of film.

[FB-Type]

[HG-Type]
DCP(carbon printing)

Audio(Control navigation switch)[HG-Type]

FB-Type]

Designation	Material
a.Film	Film(PC)
b.Printed layer	Ink
c.Plastic area	Polycarbonate resin
d.area	Adhesion
e.Rubber contact	Conductive silicone ink
f.Printed circuit board	-
g.Contact (board side)	-

HG-Type

Designation	Material
a.Key top (translucent)	Sillicone rubber
b.Light-shielding latyer	Sillicone rubber
c.Character area	Sillicone rubber
d.Color-translucent layer (character area)	Sillicone ink
e.Contact (RC side)	Conductive sillicone ink
f.Housing	-
g.Printed circuit board	-
h.Contact (board side)	-
i.Light-guiding plate	-
j.LED	-

*It is available to design dom and contact in RC.

Function/type			HG-Type
Contact	Carbon Contact	Conductive rubber Conductive print
	Metal Contact	Gold plating
Dome	Non-click Click Over-stroke click PET dome
Key top printing	Key top suface printing*1 Back side printing
Key top Coating*2	Standard coat (OC) Semi-hard coat (SH) Hard coat(HH)
Metallic tone	Key top printing Semi-hard coat (SH)
Lighting	Key top lighting Highlight graphics
Light storage	Key top light storage
Antibacterial
Material of specific gravity (White color only)

Mass production is possible.

Prototype production is possible.

Under study.

Production is not possible.

*1		The Rubber-Contact cannot be manufactured for some key top profiles and under other conditions.
*2		Only the uppermost surface of the key top can be processed. However, the total surface can be processed for semi-hard (SH) products.

Test Item		Test condition	HG-Type
Environmental test	High-temperature and high-humidity test	60, 95%RH, 240H
	Temperature cycle test	-20~70, 40cycles
	High-temperature test	90, 240H
	Low-temperature test	-40, 240H
	Weather resistance test*	Sunshine weather menter, 150 continuous hours
Oil and chemical resistance test	Alcohol	Soaked in ethanol, 12 hours
	Artificial fingerprint liquid	Soaked in artificial fingerprint liquid, 12 hours
	Hard cream	Placed in a high-temperature and high-humidty tester for 240 hours with left materials applied to the key top surface.
	Olive oil
	Glass cleaner
Rubbing test	Methanol	100 abrasion cycles with cotton canvas moistenced with left materials prwithsed onto the key top surface with a force of 500g.
	Ethanol
	Toluene		Swelling
	Johnson Wax
	Regular gasoline		Swelling
	Engine oil
	Kerosene

Yellowing color difference data (based on Hunter's color difference method, in pursuance of JIS K7103)
KTP-type: Standard product: gE=7.7, Improved product: gE=2.9, PB-N-type: gE=2.7

Accepted

 
		*
		
		Circuit for acceptance

		 There shall ce no cracks, breaks, peeling or other visible defects. There 
		 shall be no changes in color tone or other abnormalities.

The figures above show the changes in the characteristics under specific testing conditions, and therefore the figures are not guaranteed under actual operating conditions. Please note that the judgement will differ depending on the product specifications, and testing conditions.