EL Backlight

EL Panel / Cochief provides total solution of light source solution to create more innovative products with customers.

Flexible Touch Sensor

Flexible Touch Sensor

Check out our new product group, the Flexible Touch Switch and see how you can use our technology for your type of product!

EL on Fabric

EL on Fabric

Now you can print EL fabric! Enhance your products with our electroluminescent panels.


Cochief's EL Backlight

Cochief Industrial Co., Ltd. is a lighting product manufacturer that is mainly focusing on designing and developing electro-luminescent product from Taiwan, since 1998.

Cochief's RoHS certified and patented EL Backlight are sold worldwide. Along with the newly introduced products, including electroluminescent keypads, flexible touch-switch, EL plates, EL inverters, light guide products, LED plates and lamps, Cochief has become a leading supplier with a great reputation.

Both with electroluminescent advanced technology and 21 years' manufacturing experience of EL Panels and Light Guide Film, Cochief ensures each customer's demands are met.

EL Backlight

Enhance your products with EL backlight

EL Panel

EL panel for back light
EL panel for back light

Cochief, with mature EL technology, accumulated about 20 years of experience in producing EL products design.
The original color of phosphor includes green、blue、blue-green and pink-white, but we are also capable to produce EL in other colors via adding color film or print color ink directly on our EL lamp to complete customer’s visual color requirement.
EL panel is colorful、uniformity and smooth lighting to catch customer’s attention.

EL will be your best solution if your products need multiple backlight and restrictions by mechanical. With features-thin、 flexible,、only 0.1~0.5mm thickness 、 no heat generated, flexible EL backlight makes it easier to adapt to irregular surfaces and the light source can be evenly distributed in any small area of product. Like controller and keypad backlight or even can lighting on fabric….etc.

Do you have a question about how to implement EL for your product? Please contact us right away, we can offer you best suggestion.


EL is ultra-thin、 uniform light and no heat generation, suitable for various electronic equipment, as a product backlight!

Electroluminescence technology is a great way to combine practical backlighting and outstanding design in your product. The unique look of the glowing phosphor gives the user the feeling of high quality. And it’s true! Our EL panels for backlighting are processed with high quality and the best possible brightness.

Together with our engineers and designers we are constantly searching for new ideas how to implement our technology in new products. What about using electroluminescent light for fabric? We are capable to do this already.

Do you have a question about how to implement EL for your product? Contact us and we will do our best to provide you with our competent advice.

Thin, flexible and lightweight

Fitting any possible design because of it's extradordinary thin layers with only 0.1 - 0.6 mm. Due to it's flexibility it is easy to fit curved or irregular surfaces by maintaining a very light weight.

Multiple color options

We are capable to exactly determine your desired color wish. The nature color of phosphor is green to blue or a pink-white. By adding colored sheets or directly printing a colored ink on the surface we are also able to create other colors.

Irregular design

If your product requres a very special, multicolor backlighting design, EL is a very good option to do so. The uniform light reaches even the smallest areas of your product equally and absolutely reliable.


  • Colors: Blue, Blue-Green, Green, Pink-White.
  • Other colors: special painting dyes and colored sheets
  • Dimension: 50mm x 50mm ~ 800mm x 1200mm
  • Thickness: 0.1mm ~ 0.6mm
  • Operating Voltage: AC 40V ~ 300V
  • Operating Frequency: 50Hz ~ 2,000Hz
  • Operating Temperature: -30℃ ~ 60℃
  • Storage Temperature: -40℃ ~ 80℃
  • Life Time SIMULATION DATA: Above 10,000Hrs (5Hrs/day usage; above 3 ~ 5years usage); Half life time: 2500~3000 hours in 24 hours running).

EL Backlight Application FOR LCD Backlight 

1. EL Backlight for Electronic Scale

EL Backlight for Electronic Scale  

2. EL Backlight for Watches panel

EL Backlight for watches panel 

3. EL Backlight for thermometer

EL Backlight for thermometer

4. Other applications such as Calculators, Clocks, Membrane Switches, Name Plates, Domestic light switches...etc. Our Electroluminescent Backlighting are designed to solve your backlight need.

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