Compared to Printed, Chemical, Laser Etched or V-Groove Light Extraction Technologies, only MicroLens™ offers:

• up to 180,000 unique shapes per sq. in.
• Unparalled versatility in the types of shapes available
• Greater Control
• Higher Efficiency
• Reduction of film layers
• Higher Repeatability
• Science, not Artwork
• Reduced cost and high output
• CCFL-based, large format backlighting technology for LCD displays, including notebooks and desktop monitors
• Most efficient utilization of advances in LED technology
• GLT specializes in white high-bright LED backlights for color displays

MicroLens™ FOR LED-BASED BACKLIGHTING

INSERT-MOLDED LEDs

Molding the LEDs directly into the light guide (a patented GLT feature) maximizes the amount of light entering the panel by eliminating losses associated with air gaps. Insert molding also eliminates the alignment issues that can result from board mounted LEDs that are abutted to molded light guide products. Insert-molded LEDs result in a rugged and optically aligned package that keeps them solidly in place while the backlight and LCD are assembled. Combined with LCD glass holding features, the backlight can also serve as a mounting device for the LCD and backlight into the host application.

In small displays (1.5" or less wide), as few as one LED can be employed to achieve desirable light output in many applications. In mid-sized displays MicroLens™ will reduce the number of LEDs required to achieve acceptable results, saving power and cost.

MicroLens™ – HARNESSING ADVANCES IN LED TECHNOLOGY

In recent years there has been significant improvement in the output of LEDs. Display designers have been able to utilize LEDs of unprecedented efficiency in nearly any color. These new LEDs are available in eye pleasing colors including white, blue, and green, and offer significantly higher brightness levels when compared to other standard LEDs. LED reduction is important since the new LED technology is not only high output, but high cost as well.

By combining the latest high output LEDs, GLT's patented light guide design, and the efficiency of MicroLens™, the number of LEDs required for a given application can be significantly reduced, in some cases to as few as one.

MicroLens™ UniLED backlights can replace 2, 3 or more LEDs with only one high-output LED (white, blue, or green) for applications such as cellular phones, thermostats and hand-held test and measurement equipment.

MicroLens™ FOR CCFL BACKLIGHTING

MicroLens™ CCFL backlight assembly for 15-inch desktop TFT flat panel LCD monitors.

CCFL (Cold Cathode Fluorescent Lamp) backlit LCDs require a light diffusion plate that is butted against the edge of the light guide and is held by either a plastic tray assembly or a reflective foil tape at the edge of the backlight assembly. For color LCDs, most CCFL backlights will add brightness enhancement films (BEFs) to improve the brightness of the display. These films require special handling and are expensive. In small to mid-sized displays, BEF films can be optional and MicroLens™ technology will typically offer increased brightness, particularly when compared to printed, laser and chemical etched lightguide technologies.

In large format displays (10.4 inch diagonal and larger), BEF films are very common. With all other factors remaining the same, the use of GLT MicroLens™ backlight offers the opportunities to reduce the number of top films (diffusers and BEFs) required.

Global Lighting Technologies, Inc., USA Office, 55 Andrews Circle, Brecksville, OH 44141
Tel: 440-922-GLTI (4584) Toll Free: 866-922-GLTI (4584) Fax: 440-922-4585
Global Lighting Technologies, Inc., Taiwan Office, No. 1149, Sec. 3, Min-Chuan Rd., Chung-Li, Taiwan
Tel: 886-3-426-2828 Fax: 886-3-425-1919
E-mail: info@glthome.com (general information) sales@glthome.com (sales information)

MicroLens™ is a registered trademark of Global Lighting Technologies, Inc.