DIFFRACTIVE LIGHT GUIDE PLATE AND METHOD FOR MANUFACTURING DIFFRACTIVE LIGHT GUIDE PLATE

• Main Authors: SHIN BU GON, PARK JEONG HO, YOON JUNG HWAN, CHOO SO YOUNG, HER EUN KYU
• Format: Patent
• Language: Chinese; English
• Published: 24.04.2020
• Subjects: BLASTING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LIGHTING; MECHANICAL ENGINEERING; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; WEAPONS

One embodiment of the present invention provides a diffractive light guide plate comprising a first diffractive substrate and a second diffractive substrate disposed on the first diffractive substrate, wherein: the first diffractive substrate comprises a first diffractive lattice layer on one surface thereof and a second diffractive lattice layer on the other surface thereof; the second diffractive substrate comprises a third diffractive lattice layer on one surface thereof and a stress compensation layer on the other surface thereof; and the first diffractive lattice layer separates light having a wavelength of 550nm-700nm inclusive, the second diffractive lattice layer separates light having a wavelength of 400nm-550nm inclusive, the third diffractive lattice layer separates light havinga wavelength of 450nm-650nm inclusive, and the stress compensation layer has a stress in the same direction as a stress of the third diffractive lattice layer. 本发明的示例性实施方案提供了衍射导光板，包括：第一衍射基底；和设置在第一衍射基底上的第二衍射基底，其中第一衍射基底包括在一个表面