JRPanel Membrane Switch / keypad Introduce

Beautiful Appearance

Modern Silkscreen Printing with Top design Custom the product as your need
Comfortable Key Feeling

Delicate Touch, High Quality
Easy to Use

Easy to carry and
disassemble
Orignal 3M adhesive
Stable Quality

JRPanel Guarantee Consistent Quality
of Proofing & Batches
High Reliability

JRPanel membrane switch
life up to 2 million times
Long Lifetime

The life time can reach
more than three years
Low Cost

JRPanel offer the low cost
with high quality
Small Volume & Light Weight

The total thickness is only about 1mm
Weighs only a few grams to tens grams
Fast Delivery

24-48 hours Ultra-fast
Delivery

Membrane Switch Application Fields

The membrane switch is consists of keys, front panel, text, marking, logo, transparent windows. And the
design of the graphic overlay can reflect the integration of product function and original color performance,
which is unique. The membrane switches are widely used in intelligent electronic measuring instruments,
medical instruments, computer control, CNC machine tools, communication terminal equipment, various
industrial and household appliances products
(such as copiers, refrigerators, microwave ovens, electric fans, washing machines, electronic game machines, etc.).

: Household Appliances

: Office Equipment

: Instrumentation

: Mechanical & Industrial Control

: Toys & Remote Control

Silkscreen Printing

Screen printing with exquisite
Patterns and text

Graphic Overlay

Thickness≤1mm
PET/PC Colorless Film

Graphic Overlay

It is generally printed on PET, PC
colorless sheets with beautiful patterns
and text. It has the functions of marking
and keys, and it has the characteristics
of high transparency, high ink adhesion,
high elasticity and high toughness.

Upper Adhesive

It is used to closely connect the panel layer
and the circuit layer to achieve sealing
& connection.It has high viscosity and anti-aging
Thickness of 0.02 ~ 0.05mm

Upper Circuit

This layer is mainly metal dome or die-
pressing silver paste point, which as the upper
circuit. It can be contacted with the lower
circuit by pressing the key to get connected

The Spacer

It is mainly used to insulate the upper &
lower circuit layers and bond them togetterh,
it also can prevent the metal dome from shifting.
Generally use PET double-sided tape,
its thickness is 0.05-0.2MM, etc.

Lower Circuit

The main circuit layer, this layer uses PET，
It use silver paste and carbon ink to
print the circuit design, which has excellent
conductive properties, also can mount LED.

Back Adhesive

Membrane switch back adhesive,
It is used for assembly bonding with
instruments & equipment.
JRPanel use genuine 3M adhesive,
Various types are available:
3M55236, 3M9448A
3M467, 3M468, 3M300LSE

Membrane Switch Technical Parameters:

Electrical Properties	Operating Voltage	Working current	Contact resistance	Insulation resistance	Base Material Voltage	Rebound time	Insulation ink withstand voltage
Electrical Properties	＜25VDC	≤50mA	20~150Ω According to cable length	≥100MΩ （100VDC）	1.5kDVC	≤6ms	100VDC

Mechanical Properties	Reliability Life	Key Displacement	Force	Silver Trace Width	Contact Pitch
Mechanical Properties	＞1 million times	0.1~0.2mm （Non-Tactile） 0.3~0.8mm （Embossed key）	180~350g	≥0.3mm min. spacing 0.5mm With green Insulating oil	2.54mm(common) 1.0mm(common) 1.27mm

Environment Properties	Operating Temperature	Storage Temperature	Atmospheric Pressure
Environment Properties	-20℃ ~ +80℃	-30℃ ~ +85℃ Humidity 95%±5%	86~106KPa	/

Printing Index	Printing Size Deviation	Hallow Deviation	Color difference	Others
Printing Index	±0.20mm Unclear edge deviation ±0.2mm	± 0.1mm/100mm	According to the Pantone card, with 10%	No ink scattered, no handwriting No creases or removal Transparent window is transparent and clean, No scratches, holes, impurities

The Comparison of PVC/PC/ PET

PVC - Not supply	PC（Polycarbonate）	PET（Polyester）

Non-degradable (not environmentally)	Degradable ( Environmentally )	Degradable ( Environmentally )
Glossy / Transparent to opaque / Good light transmittance	Glossy / Transparent to opaque / Good light transmittance	Glossy / Transparent/ Good light transmittance
-10~60℃	-30~110℃	-20~120℃
Thickness：0.175~0.5mm	Thickness：0.175~1.0mm	Thickness：0.125~0.2mm
It is stable to acids, alkalis and salts at room temperature. Good abrasion resistance, flame-retardant, self-extinguishing, noise reduction and shock absorption, and good electrical insulation. Poor thermal stability. 70% light transmittance, suitable for less demanding display panels, not suitable for button panels, because the texture is particularly soft, the buttons are easy to be broken by long-term use, the life is not long, and they are not resistant to aging, The material can not be degraded, not environmentally, can not withstand high temperature, It can be use at room temperature within 65 degrees.	Low water absorption, good dimensional stability, excellent bending, tensile and compressive strength, excellent heat resistance, cold resistance, electrical insulation and atmospheric aging resistance; Poor chemical resistance, poor fatigue resistance, prone to stress cracking. The general scope of application is the most extensive, except that it can meet the requirements of most membrane switch panels, Among them, the high light transmittance of glossy PC can meet the requirements of liquid crystal display windows PC matte, material, light transmittance 78%, material is softer than PET, can be bent at will, is not resistant to aging, can withstand weak acids and alkalis, and is also one of the most widely used materials on the market at this stage. (F150 is small matte), the emboseed feeling weaker than PET, the material is environmentally friendly and degradable, and it can meet export standards.	Good chemical resistance, insoluble in common organic solvents, not resistant to alkali. It has excellent mechanical properties, electrical properties, rigidity, hardness and maximum toughness of thermoplastics, low water absorption, excellent wear resistance and friction resistance, and high dimensional stability. The tensile strength is comparable to aluminum film, which is much higher than PC and PVC. F150 is imported PET frosted material with high temperature resistance and aging resistance. Even if it is frosted, the light transmittance of the material is still very high. The light transmittance of PET is 89%, making the color more vivid. It is the most ideal substrate for making membrane switch circuits. It is suitable for products with high environmental requirements or products with digital tubes.

Material used in the
circuit layer

The base material of the circuit should be polyester
(polyethylene phthalate) Film (Potyester referred to as PET).
It has good insulation and heat resistance, high mechanical
strength, transparency and airtightness, especially folding
resistance and high elasticity.

The thickness of
the plastic

The thickness of the plastic substrate is 0.25mm or below and is called a film. It is mainly used as the panel layer of the membrane switch. Various indicative patterns and text are printed on the back to indicate the operation area of the corresponding key switch. Depending on the size of the button, the material is thick, the touch force is increased, and the response is slow; the material is too thin, the feel is poor when touched, and the rebound is not obvious. Thickness above 0.25mm is called plate, which is not suitable for three- dimensional key forming. It can be used as an indicative sign panel in the keyless operation area, and can also be used as a lining for membrane switches to increase its hardness.

EMBOSSED KEY TYPE:

JRPanel can provide various types of embossed-key as following picture.
The default is circle-embossed (the left 1st ). If you need other types, you can specify it in the remarks or drawings when placing an order.

Circle Embossed
Flat-Embossed Key
Edge-Embossed
Key-Shape Embossed
Flat-Key
(No embossed)

Membrane Switch with Die-pressing Key

This type of membrane switch uses silver paste as the upper circuit layer of the switch. By pressing, the center of the silver paste point is connected to the lower circuit to realize the conduction and trigger signal. Through the "die-pressing" , the silver paste disk of the button of the upper circuit is pressed into a certain spherical crown shape with a mold, and a certain elasticity is generated, so that the button can rebound when pressed, and the circuit is turned on or off. It is also obvious enough to feel the switch closed. Bumping of silver paste requires the use of molds, especially batch orders, and the need to customize the bumping molds can greatly improve the production efficiency and the stability of product quality.

The die-pressing silver pad can be designed to be 5mm-11mm, and the recommended size is 8-10mm. The button size will be more suitable for finger pressing.
Membrane Switch with Metal Dome Key

This type of membrane switch uses metal dome as the upper circuit layer of the switch. By pressing the key, the metol dome central point will connect the lower circuit, then trigger with a singal. Metal dome is usually made of stainless steel, which is flexible and can be pressed more than one million times.

The keys of the metal shrapnel have a good button touch and provide good tactile feedback to the operator. JRPanel uses stainless steel cross shrapnel, and available in specifications of 8.4, 10, 12, 14, 16mm. The metal dome size of 10-12mm is generally recommended, which is more suitable for the actual finger press.
Membrane Switch with LED

This type of membrane switch can be installed with LEDs inside. When the corresponding button is pressed, the LED will light up and be used only as the operating area of the switch. JRPanel uses Everlight's Everlight package as a 1206 SMD LED. The LED light is welded on the circuit under the membrane switch to assemble it as a whole. The LED light window is often bumped. This type of product is mainly used for the function keyboard of the industrial control equipment of the man-machine interface.

JRPanel this product can be welded with LED lights of various colors according to customer needs. (Red, Emerald green, Blue, Yellow green, BI-LEDs, RGB LED).
Membrane Switch with Electrostatic Shield

Membrane switch with Electrostatic Shield, it is seted up electrostatic protection components (ESD) inside the device,。The main principle is to use electromagnetic shielding to shield space electromagnetic interference, thereby reducing and eliminating electromagnetic interference from space. Generally, it is used in the fields and products that are with high requirements for electromagnetic interference EMI and EMC, such as laboratory equipment, scientific research equipment, military products. The membrane switch used in the above will use a shielded electrostatic membrane switch, which has complicated art and high cost, and it is especially suitable for products with requirements for anti- electromagnetic interference performance and low cost requirements.

Features:
1. It has anti-static protection for product devices
2. Reduce the damage of static electricity of surrounding devices
Flat Membrane switch

The upper circuit silver pad and the circuit layer are not emboseed. the entire panel layer is flat, the keys are no feeling when touched, and the service life of the keys is more than 2 million times. It can be used as a function membrane switch for industrial control equipment and household appliances.
Plug-in-Card Membrane Switch:

Plug- in-Card membrane switch, It will design colorless transparent window in the graphic overlay, the bottom of graphic owerlay is isolated, then it is ok to plug in the cards from the card slots in the edge side. The membrane switch is the main body, the cards can be designed in various ways, and the cards can be replaced according to actual use, which can be more flexible used. This type of membrane switch is mainly suitable for supermarket electronic weighing devices. In this kind, the Membrane switches can be used repeatedly. Only the graphics and text of the card need to be changed. JRPanel designs key content, color, effect, etc. according to customer needs, The Plug-in-Card Membrane Switch can only change the design of the cards in the future, it can be used more widely.
Waterproof Membrane Switch

The waterproof membrane switch can be used in rainy or humid environment with waterproof and moisture proof effect.

JRPanel's unique waterproof technology with 3M300LSE adhesive, the waterproof grade can reach IP67. This product is more used in the kitchen and medical ,outdoor devices.

Inspection & Check

Membrane switch & Graphic overlay

1. Check the color: The contrast of colors. Due to ambient light and other reasons, it can not be directly compared with the real sample or computer pictures. It needs to be checked with the Pantone color card. The general colors can only be closer, couldn't be same. JRPanel uses Pantone Formula Guide Coated card. [Finding color numbers on https://www.pantone.com/color-finder]

2. Shape inspection: Check the shape and internal slots and windows accordingly according to the product design drawings.

3. Appearance inspection: check the graphics of the panel layer，the logo text, etc, whether there are defects, omissions, stains, etc. Whether the window and press position are offset. If there is protective film attached to the window.

4. Check the peel strength of the adhesive: check whether the adhesive is the adhesive selected according to the order, and test the peel strength of the adhesive is not less than N/25mm.

Membrane Switch

Enjoy the Convenience Orders at JRPanel.com!

Erin KOU