Patent ID: 7829179
Filing Date: 2010-11-09
Classification: B32B,C09K,Y10T

Abstract:
1. A photoluminescent sheet, comprising: a body containing a phosphor and comprising two opposing surfaces, wherein the body is configured to 1) absorb light, of at least one wavelength, emitted from a light source, 2) emit light of a wavelength different from the wavelength of the emitted light and 3) allow the remainder of the light emitted from the light source to penetrate the photoluminescent sheet; and a layer formed on at least one of the two opposing surfaces of the body, wherein the layer comprises a wet preventing bead and an adhesive layer for attaching the wet preventing bead to the body, wherein the adhesive layer surrounds a surface of the wet preventing head, and wherein the diameter of the wet preventing bead is greater than the thickness of the adhesive layer on the body.