98043985609

98043985609 Datasheet


Part Datasheet
98043985609 98043985609 98043985609 (pdf)
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98043985039 98043985039 98043985039
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Application Guidelines

Effective January 14, 2010

Vikuiti Brightness Enhancement Film II BEF II Vikuiti Brightness Enhancement Film III BEF III Vikuiti Thin Brightness Enhancement Film TBEF

The prismatic structure of Vikuiti Brightness Enhancement Film BEF allows you to manage the angle of light exiting from your display. Vikuiti BEF films work by utilizing the principles of refraction and total internal reflection. The process of refracting usable light towards the viewer and reflecting most of the remaining light back into the display is called recycling. This form of light management can be done with a single sheet of Vikuiti BEF film or two sheets crossed at 90 degrees to each other. Vikuiti BEF films can also be used with Vikuiti Dual Brightness Enhancement Films DBEF and Vikuiti Enhanced Specular Reflector ESR to further increase the efficiency of your display. Vikuiti BEF II Film This is the current version of the original Vikuiti BEF I film, which has been out of production for some time. It features an acrylic resin prismatic structure coated on a polyester substrate. This is the highest performance member of the family, and incorporates structural features which helps avoid wet-out, which is an optical coupling that can mar the appearance of an LCD display. It is available in the standard 90/50 version, and a 90/24 version for additional moiré avoidance. Vikuiti BEF III Film This is a newer version, featuring similar structural elements to Vikuiti BEF II film, but utilizing a randomized prism pattern for increased wet-out and reflective moiré avoidance. It has slightly lower performance than Vikuiti BEF II film. It is also available in an M Matte version. The M version softens the brightness fall-off at the edges and may allow the elimination of a separate diffuser from the display. Essentially, Vikuiti BEF III film is a slightly lower cost, slightly lower performance alternative to Vikuiti BEF II film. Vikuiti TBEF Film The “T” stands for Thin. Vikuiti TBEF film has excellent optical performance, yet is less than half as thick as Vikuiti BEF III film. It is intended for those applications where the thickness of the entire display/module must be kept to an absolute minimum. Its thin nature makes it somewhat less robust, and should be restricted to relatively smaller displays where its reduced warp resistance and environmental stability will not be a factor.

The figures below illustrate the film’s basic constructions. All dimensions are approximate, and the figures are not drawn to scale.

Vikuiti BEF II 90/50 Film

Removable Liner 40 microns Prismatic Structure 23 microns Polyester Substrate 127 microns

Removable Liner 60 microns Delivered Thickness 250 microns Applied Thickness 150 microns excluding liners

Vikuiti BEF II 90/24 Film

Removable Liner 45 microns Prismatic Structure 13 microns Polyester Substrate 127 microns

Removable Liner 60 microns

Delivered Thickness 245 microns Applied Thickness 140 microns excluding liners

Vikuiti BEF III-T Films 5T

Removable Liner 40 microns 40 microns Prismatic Structure. 28 microns 24 microns

Polyester Substrate 127 microns 254 microns

Removable Liner 60 microns 60 microns

Delivered Thickness 255 microns 378 microns

Applied Thickness. 155 microns 278 microns excluding liners

Vikuiti BEF III-M Film

Removable Liner 40 microns Prismatic Structure 28 microns

Polyester Substrate 127 microns

Matte Coating 5 microns Removable Liner 60 microns

Delivered Thickness 260 microns

Applied Thickness 160 microns excluding liners

Vikuiti TBEF Film

Removable Liner 40 microns Prismatic Structure 12 microns Polyester Substrate 50 microns

Removable Liner 75 microns

Delivered Thickness 177 microns Applied Thickness 62 microns excluding liners

Formats

Reference the current price sheet or call customer service 1-800-553-9215 for information on part sizes.

To help you orient the film, the sheets will have a small notch cut into one of the corners. Hold the sheets with the cut notch in the upper right-hand corner to identify the prism direction for square parts and rectangular parts with vertical prisms. Orient the notch to the lower right hand corner for rectangular parts with horizontal prisms as illustrated below. When held like this, you will be looking at the upper surface with the prismatic structure, which must face the LC glass module, and away from the backlight.

Notch

Notch

Prism Direction Prism Direction

Prism Direction

Notch

Vertical Prisms

Horizontal Prisms

Liquid Crystal Module Vikuiti DBEF Film Optional

Vikuiti BEF Film Vikuiti BEF Film Optional

Diffuser Optional Backlight System LED, CCFT, etc.
More datasheets: B25834D4476K4 | B25834D4336K4 | B25834D4226K4 | B25834D4157K4 | B25834D5336K4 | B25834D6156K4 | 98-0440-0360-0 | 98-0440-0359-2 | 98-0440-0038-2 | 98-0440-0037-4


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Datasheet ID: 98043985609 519749