Patent 11177419 was granted and assigned to InnoLux Corporation on November, 2021 by the United States Patent and Trademark Office.
An optical device includes two substrates disposed opposite to each other. Each of the substrates has a surrounding edge and a side surface at the surrounding edge. A wavelength conversion layer is disposed between the two substrates. A light emitting unit corresponding to the wavelength conversion layer is disposed between the corresponding wavelength conversion layer and one of the two substrates. A sealing element is disposed along the edges and in contact with the side surfaces of the two substrates, and seals the wavelength conversion layer and the light emitting unit located between the two substrates.