Another type of membrane switch button, it is an embossed silver pad in the circuit layer by the "embossing" process, the silver pad of the button as the upper circuit is pressed into a fixed spherical crown shape with a mold, so that the button position of the entire switch has a guiding effect, and the material has a certain elasticity which is generated after the deformation by embossing. Also the button will rebound after being pressed, so that the button has a good touch feeling. The operator can obviously feel the closing of the switch.
It is also contact with the lower circuit to achieve circuit conduction through pressing. The convexity of the die-pressing needs to use the mold, especially for the batch order, which convexity mold needs to be specially customized. This can greatly improve the production efficiency and the stability of the product quality.
The size of the die-pressing can be designed to be 5mm-11mm, JRPanel recommended size is 8-10mm. The button size will be more suitable for finger pressing.
1.0mm pitch tail reinforcement (partial enlarged view)
According to the design requirements, LEDs can be mounted on the circuit of the membrane switch, and the LED light can indicate the function of product operation and button selection. JRPanel can provide a variety of high-quality LED colors, ( Package: 1206 ), SMD Type, the recommended diameter of LED window is about 3-4mm.
Monochrome LED Colors: Red, Yellow, Blue, Emerald-Green, Yellow-Green
Bi-Color LED: Red + Emerald-Green
RGB LED:Red + Emerald-Green + Blue
Reminder: Please be sure to indicate the LED color and the directions of LED ( the polarities (+/-) in the design drawings . (Following is an example picture, please refer to the actual product)
(Monochromatic LED) Package 1206
Pic 2 Bi-Color LED & Circuit Design Refer
Pic 3 RGB LED & Circuit Design Refer
- 3M GENUINE QUALITY ASSURANCE -
3M55236- Cheapest -
3M467MP- Thinnest -
JRPANEL FIRMLY SELECTED 3M IMPORTED GENUINE ADHESIVE!
ADHESIVE USE GUIDE
For the 2.54mm pitch terminal, it is ok to do with 3 types ESD : A, B, C.
For the 1mm/1.27mm pitch, it only can do with Type A.
In order to prevent the surface of the membrane switch from being charged with static electricity, JRPanel can add a layer of conductive adhesive or an independent shielding layer to the membrane switch and lead out the ground line. The main principle is to use electromagnetic shielding to shield space electromagnetic interference, thereby reducing and eliminating electromagnetic interference from space. After adding the electrostatic shielding layer, the overall structure of the membrane switch will become thicker, which is not suitable for products with higher thinness requirements;
you can choose the appropriate type according to actual needs. When placing an order, please note the required type.
For membrane switch and Graphic overlay, there usually will do embossing for the keys, which can help the operator to quickly determine the position of the button, make the button feeling better, and also make the product more design and three-dimensional.
The key embossing is to do embossed for the key area with a drum press on the graphic layer. This method has strict temperature and pressure requirements based on the natural and convex-concave characteristics of the material.
It has the following advantages: (1) Improve the decorative effect of the appearance of the membrane switch. (2) The operator's sense of touch is relatively sensitive. (3) The range of the key body is accurately given. (4) Improve the recognition speed.
JRPanel provides a variety of embossing types, which can reach customer's requirements with different types of keys. Circle Embossed, Flat- Embossed Key, Edge- Embossed, Key Shape Embossed, Flat- Key ( No embossed ).
Following are 2 reminds: 1. The default key type is the circle embossed ( the first on the left) ), If need to do with other kinds embossed type, kindly pls noted in the remarks or drawings when placing the order. 2. when designing embossing, please design the corner of rounded corners, It couldn't do not sharp corners ( this will break the graphic layer )
Graphic Layer Material:
It is mainly choose PC/PET material.
According to its surface type,
it can be divided into:
① Matte surface ( translucent film )
② Glossy surface ( transparent film )
If you need a smooth window, other surface matte,
JRPanel can also provides an option:
"Glossy window with Matte surface"
This can achieve the window glossy and the
effect of other surface matte.
Surface Effect Matte Material
Glossy Material with Matte oil covered
Comparison of Colorless Glossy Transparent Window & Colorless Matte Translucent Window
Distance 20mm - Display Effect
Colorless Glossy Transparent Window
Colorless Matte Translucent Window
No distance - Display Effect
Colorless Glossy Transparent Window
Colorless Matte Translucent Window
The total thickness of the product depends on the thickness of the material & the type of adhesive, etc. These can be selected by the customer when placing the order. You can check the thickness of the material and adhesive on JRPanel online quoting page conveniently. Quote Now
In the membrane switch, the design of the graphic overlay is mainly graphic design, because JRPanel use the silkscreen printing to make the graphic overlay. In the graphic design, the minimum process capability of the actual silkscreen printing process must be considered.
In order to be more suitable for factory production and improve the speed of product completion. When designing the drawing of the graphic overlay, please refer to the following parameters:
|Outline tolerance:||±0.2mm【Outline do Lower tolerance as default; Cutout do upper tolerance as default 】||Key border line||≥0.3mm
(Adjacenting Color border ≥ 0.5mm)
|Min.Text/pattern line width:||≥0.2mm||Embossed key spacing||≥2mm|
|Min.Silver track width||≥0.5mm||Safety distance between outline /cutout to silver track:||≥0.7mm|
|Max. Panel size:||800*400mm||Tail-exit to the edge:||≥0.7mm
Better not design to close to edge. If requirement of waterproof, it need ≥5mm
JRPanel uses silkscreen printing to produce patterns and texts of the membrane switch & graphic overlay. When designing, there will encounter adjacent colors. In the following two situations, it need to consider drawing borders to make the product more suitable for silkscreen printing and obtain better screen printing effects.
(1) When two colors and multiple colors are adjacent to each other, they may be misaligned or shifted because they are printed separately.
It needs to add a dark outline to cover the uneven edges.
(2) Sometimes the colors are mixed when the colors are adjacent to each other, there will be a mixed-color between the 2 colors.
So it also need to add a dark stroke to cover the color line.
<20% Gray, It need choose the "Light Color Background", as it need do 2 times printing for this color.
>=20% Gray, It doesn't need choose the "Light Color Background"
Silkscreen printing refers to the use of a silkscreen frame as the base, and use the method of film exposure to make a screen printing plate with graphics. When printing, the ink can be printed on the substrate through the fine holes of the screen. For the non-graphic area, the fine holes of the screen are blocked, then the ink cannot pass through the screen. Finally, it will print the graphic of customer needed on the substrate material, such as PC / PET. This is the basic principle of silkscreen printing. During printing, firstly, Pouring the ink on one end of the screen printing plate, then applying a certain pressure to the ink portion on the screen printing plate with a scraper, and moving at a constant speed toward the other end of the screen printing plate. The ink is moved by the scraper from the graphic during the movement part of the mesh is squeezed onto the substrate to produce the graphic design that the customer needs
Advantages of silkscreen printing:
Screen printing with exquisite
Patterns and text
PET/PC Colorless Film
In the design of membrane switches/graphic overlay , some customers will design white semi-transparent windows and white patterns & characters in 1 design, but only submit one color when ordering. This calculation is not correct. For white color, it is printed with conventional white ink, and For white semi-transparent color, it need to blend white ink and varnish into a white semi-transparent ink, which can be finally achieve a semi-transparent effect when printing. So the two inks are different and need to be printed separately. Therefore, when calculating the number of colors, it cannot be counted as 1color, but 2 colors. Hope this can be clearly for customer to understand this.
In the membrane switch design, if there is an LED design below, the LED window is designed to be white translucent, which can weaken the LED light and make the LED light relatively soft.