The present invention provides a laminated polyester film which exhibits a good adhesion property to various adhesives, and can be suitably used in the applications in which a high total light transmittance is required, for example, as a member for protecting a polarizing plate of liquid crystal displays, in particularly, as a protective film disposed on a rear surface of a rear side polarizing plate. The laminated polyester film according to the present invention comprises a polyester film; a coating layer formed by applying a coating solution which comprises at least one resin selected from the group consisting of a polyester resin, an acrylic resin and a urethane resin, polyvinyl alcohol and an oxazoline compound, on one surface of the polyester film; and a coating layer formed on the other surface of the polyester film which has an absolute reflectance exhibiting one minimum value in a wavelength range of 300 to 800 nm wherein the minimum value is not more than 3.5%.

Laminated polyester film

The present invention introduces a new class of lightweight tile-based illumination systems for uses wherein thin directionally-illuminating light distributing engines are embedded into the body of otherwise standard building materials like conventional ceiling tiles along with associated means of electrical control and electrical power interconnection. As a new class of composite light emitting ceiling materials, the present invention enables a lighter weight more flexibly distributed overhead lighting system alternatives for commercial office buildings and residential housing without changing the existing materials. One or more spot lighting, task lighting, flood lighting and wall washing elements having cross-sectional thickness matched to that of the building material or tile into which they are embedded, are contained and interconnected within the material body's cross-section. Embedded power control devices interconnected to each lighting element in the distributed system communicate with a central switching center that thereby controls each light-emitting element in the system.

Distributed illumination system

The present invention introduces a new class of thin doubly collimating light distributing engines for use in a variety of general lighting applications. Output illumination from these slim-profile illumination systems whether square, rectangular or circular in physical aperture shape is directional, square, rectangular or circular in beam cross-section, and spatially uniform and sharply cutoff outside the system's adjustable far-field angular cone. Some embodiments provided include thin light distributing engines which provide input light collimated in one meridian and a light distributing element that maintains input collimation while collimating output light in the un-collimated orthogonal meridian, in such a manner that the system's far-field output light is collimated in both its orthogonal output meridians. The present invention can also include optical films that process the engine's doubly collimated output illumination so as to increase its angular extent one or both output meridians without changing beam shape or uniformity.

Thin illumination system

A spatial light modulator comprises an integrated optical compensation structure, e.g., an optical compensation structure arranged between a substrate and a plurality of individually addressable light-modulating elements, or an optical compensation structure located on the opposite side of the light-modulating elements from the substrate. The individually addressable light-modulating elements are configured to modulate light transmitted through or reflected from the transparent substrate. Methods for making such spatial light modulators involve fabricating an optical compensation structure over a substrate and fabricating a plurality of individually addressable light-modulating elements over the optical compensation structure. The optical compensation structure may be a passive optical compensation structure. The optical compensation structure may include one or more of a supplemental frontlighting source, a diffuser, a black mask, a diffractive optical element, a color filter, an anti-reflective layer, a structure that scatters light, a microlens array, and a holographic film.

Spatial light modulator with integrated optical compensation structure

Illumination devices and methods of making same are disclosed. In one embodiment, a display device includes a light modulating array and a light guide configured to receive light into at least one edge of the light guide. The light guide can be characterized by a first refractive index. The display device can also include a light turning layer disposed such that the light guide is at least partially between the turning layer and the array. The turning layer can comprise an inorganic material characterized by a second refractive index that is substantially the same as the first refractive index.

Illumination devices and methods of fabrication thereof

A polyester film which is excellent in the property of evenly diffusing light, dimensional stability to high temperatures, and luminance and which is suitable for use as the substrate of a light diffuser plate for liquid-crystal displays. The film comprises a polyester consisting mainly of poly(ethylene 2,6-naphthalenedicarboxylate). It has a thermal shrinkage of 0.3% or lower in each of two in-plane directions perpendicular to each other when heated at 105°C for 30 minutes, and has a dimensional change of 1.0% or lower in each of two in-plane directions perpendicular to each other with changing temperature in the range of from 30°C to 150°C under a stress of 0.37 MPa. The film has a density of 1.350 g/cm3 or higher, a total light transmittance of 87% or higher, a haze lower than 1.5%, and a thickness of 50 to 150 νm.

Biaxially oriented polyester film for light diffuser plate and light diffuser plate

A polyester film for capacitors which is a biaxially oriented film made mainly of polyethylene-2,6-naphthalene- dicarboxylate and satisfying the relationship: -1.5% </= RMD(150) </= 0.0% wherein RMD(150) represents the rate of thermal strain of the film in machine direction (MD) at 150 DEG C as defined based on the length of the film in MD at t DEG C, LMD(t), by the formula: RMD(T) = {[LMD(T) LMD(35)]/LMD(35)} x 100 (%) wherein RMD(T) is the rate of thermal strain of the film in MD at T DEG C. This film is excellent in insulating characteristics and is not lowered in the quality in fabricating, particularly hot pressing, thus being useful as a dielectric for capacitors.

Polyester film for capacitors

PROBLEM TO BE SOLVED: To provide a polyester film at a cost lower than that of a heat resistant film, capable of being durable with respect to practical use, even under a high temperature conditions, such as at 160 degC SOLUTION: The polyester film for the TAB lead tape of a biaxially oriented film, containing polyethylene-2,6-naphthalene dicarboxylate, as the main component and having a thickness of 75 μm or larger

Polyester film for tab lead tape

PROBLEM TO BE SOLVED: To provide a biaxially oriented laminated polyester film for electric insulation capable of preventing the generation of the problem caused by ply separation or an adhesive while keeping the excellent thermal deterioration resistance and oligomer suppressing effect of polyethylene-2,6-naphthalate. SOLUTION: The biaxially oriented laminated polyester film for electric insulation is constituted by laminating layers (surface layers) comprising polyethylene-2,6-naphthalenedicarbolxylate on both surfaces of a layer (intermediate layer) comprising polyethylene terephthalate. The intermediate layer contains 0.05- 70-99 wt.% of the polyethylene-2,6- naphthalenedicarbolxylate. Each of the surface layers has a thickness of at least 2 μm and is below 10% on the basis of the thickness of the laminated film.

Biaxially oriented laminated polyester film for electric insulation

A composite film for a film condenser, which comprises a biaxially oriented film made of polyethylene-2,6-naphthalenedicarboxylate as a main polymer component and an electrically conductive metal thin layer formed on the surface of the biaxially oriented film, wherein the number of flyspecks having an average diameter of 60 μm or greater in the surface of said biaxially oriented film is 20/m2 or less and the number of portions failing to satisfy a dielectric breakdown voltage of 200 V/μm (electrical insulation defects) in said composite film is 20/m2 or less, and a biaxially oriented film therefor. According to the present invention, there is provided a high-quality composite film for a film condenser, which has excellent physical properties and electric characteristics. Further, there is provided a very thin biaxially oriented film excellent in processability and surface properties and usable for the composite film.

Hiroshi Kusume

Papers

Biaxially oriented polyester film for light diffuser plate and light diffuser plate

Polyester film for capacitors

Polyester film for tab lead tape

Biaxially oriented laminated polyester film for electric insulation

Composite film for capacitor, method for manufacturing the same, and base film therefor