Light guide technology of optical film,to light up through the point to plane | Lighting | Light Guide | Film | Electro Luminescent Lamp Manufacturer | Cochief

Customized light guide | 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.


Light Guide Plate | Capacitive Touch Switch Modules & Displays Manufacturer | Cochief

Located in Taiwan since 1998, Cochief Industrial Co., Ltd. has been a backlight applications and touch switch solutions manufacturer. Their main products include, Light Guide Plate, cuttable EL panel, light guide film, EL wire, light display electroluminescent, EL lamps, intelligent lighting control module, capacitive touch switch module, capacitive touch sensor, flexible touch film, tactile switch and touch module, which are mainly focusing on designing and developing electro-luminescent products.

COCHIEF was established in February, 1998. We mainly produce electro-luminescent that known as “EL”. “KEEPING PROGRESS & BEST QUALITY” as the key spiritual principle strongly persisting in Cochief. Keep improving the manufacturing capability as well as pursuing innovative ability in order to match the multi-developing markets. Also being eco-friendly matched as ROHS compliance products. with more than 20 years manufacturing experience in producing EL Panel, Light Guide Film and Intelligent Touch Switches Modules for customers in global market from Taiwan.

Cochief has been offering customers backlight applications and touch switch solutions, both with advanced technology and 25 years of manufacturing experience, Cochief ensures each customer's demands are met.

Light Guide Plate

Customized light guide(LGP)

Light guide technology of optical film,to light up through the point to plane

Customized light guide
Customized light guide

Light guide plate (LGP), as the name implies, is a light guide medium, which is more rigid than the light guide film. The thickness varies from 1mm to 20mm to satisfy client’s request, also depending on the customer's different application and needs.
As different thickness to have better lighting performance and large light guide dimension.
We use optical grade plates and professional layout design as micro-structure size planning to achieve the best uniformity of light efficiency to meet customer needs.

Easy to design, power-saving, apply widely to LCD backlight, LED sign board and door sill in car, etc.


The procedure of Light guide plate.Using the edge type of LEDs, spreading LED lighting on PMMA. Lighting uniformity and high brightness.

Practical application

  • Indicating light of the security system,saturated colorfulness and homogeneous light(photo 1)
  • Light of door sill, small volume and homogeneous light(photo 2)


  • Size:10mm*10mm~594mm×841mm
  • Thickness:1mm~20mm
  • Brightness:318 nits / 1000 Lux
  • Light Uniformity:70%
  • RoHs Compliant

Feature of product

  • Very thin
  • Low power consumption
  • Competitive price
  • Brighter light with fewer LEDs
  • Customized Design
  • Homogeneous brightness
  • Long life
  • No EMI
  • Various designs

Application field

  • Advertisement display
  • Decoration
  • Bulletin Board
  • Traffic sign
  • Public transport station
  • Showroom
  • Exhibitions
  • Automotive parts etc.

Cochief's Advantage

Press Release