backlight membrane switchIntegrated AssembliesReliable performance
Backlighting Membrane Switches means that there is a light source from the backside to light the graphic overlay and provide the indication information to users or when the product used in the night or dark environment it can light the graphic and make the users or workers make buttons press operation correctly and avoid pressing wrong buttons.
There are several types of backlighting ways for the membrane switches. They are:
LED backlighting membrane switches
EL lamp backlighting membrane switches
LGF(Light Guide Film) backlighting membrane switches
Fiber backlighting membrane switches (seldom used nowadays due to their complex manufacturing process and very high cost. It has been replaced by EL lamp backlighting and LGF backlighting technology
For the LED backlighting keypads, the graphic overlay lighted by the backside LEDs assembled on the flex or rigid circuit layer. In this way, it is very simple and also economical.
But it couldn’t get an even lighting effect on the surface. For this backlighting method, the LEDs can be assembled under centered buttons also can be assembled beside the buttons or other areas. For the products need each button to be backlighted, usually design the LEDs under the center of the buttons, then use the center holed metal domes and print transparent color on the graphic overlay.
Parameter reference (based on the actual product)：
| brand | LuPhi/LuphiTouch | Processing customization | yes |
| Key lifespan | ≥ 1 million times | Rebound time | 6ms |
| working voltage | <35V (DC) | Working current | ≤ 100mA |
| contact resistance | 0.5~10 Ω | Working resistance | 40 Ω~500 Ω |
| insulation resistance | >100M Ω 250V DC | Substrate pressure resistance | 2kDVC |
| working temperature | -25 ℃~+80 ℃ | Atmospheric pressure | 86~106kPa |
| Waterproof technology | IP65-IP67 | LGF/LED/EL | Support customization |
| Product Certification | ISO9001:2015 | Applicable scope | Medical equipment, industrial control, transportation, instrumentation, household appliances, electronic entertainment, testing equipment, communication equipment |
| type | Membrane switch | Using Materials | PC/PET/PVC/Acrylic/Anti static |
| 3C rated voltage range | 440V and below | Protective function | Waterproof and anti-static |
| Monthly production capacity | 2000000PCS | Product process | screen printing |
