Ultra Thin Face-Coupled Scalable LED Backlight Technology For Large Format LCD TV. TilEx™ Thin Collimating Modular LGP with Face-Coupled Immersed LED
Large backlights can be constructed from a number of standard modules. Individual modules are designed to “leak” light to their neighbors. In this way LED rank & binning and aging effects on local nonuniformity are reduced.
Foconic couplers can also be integrally formed in a modular or large size light extracting LGP. SMD LEDs are mounted or preferably bonded to a back face of an LGP
Brighter Future With Ultimate Dream Backlight: Converting Top Window Low Rank SMD LED into A Large Area High Bright Directional Uniform Emitter.
Ultra-thin Patented CRATER™ side emitting foconic encapsulator integrally coupled to a planar flux extracting & collimating ExFRACTOR™ light guide enables to construct low-profile modular backlights.
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TilEx© represents a disruptive technology of the future in view of the following quantum leap benefits for LCD of any size:
Factor 2-20 Higher power efficiency due to an improved EQE (extraction quantum efficiency) of LED and more efficient and directional light extraction by a secondary LED optics:-
LED output can be improved by 25% – 200% depending on LED chip type and lamp packaging. Foconic TIR CRATER™ coupler collects all the light emitted by a top window chip and collimates it to propagate along a planar LGP solely by TIR without any uncontrollable leakage.
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Flexible Luminance distribution unattainable with conventional edge-coupled design : from a highly collimated one with an on-axis gain of 20 for small displays to an isotropic Lambertian for large wide - angle LCD TV.
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Low profile: LGP thickness is determined by a height of a CRATER™ coupler operating to intercept and inject LED’s flux into main LGP. Its height and maximal radius are similar to LED’s chip size and are reduced to just 0.25 mm for small power package to 3mm for more powerful 1W LED.
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Modular BLU design scalable to any size. A large area BLU is constructed as a 2D array of smaller standard modules. Drastically reduced NRE, as same modules can be used for different BLU size.
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Improved Image Quality & Power Efficiency. Modular design also allows dynamic dimming of individual units to conform to an image content. Dynamic dimming is known to save up to 50% of power compared to conventional BLU continuously operating at maximal luminance. It also greatly improves an image quality by reducing a luminance of a black reference resulting in a larger contrast ratio and reproducible shades of gray.
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Ease of mounting: TilEx™modular backlights are ideally suited for insert molding providing a complete backlight module solution.
