Patents by Inventor Suman Halder

Suman Halder has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12158670
    Abstract: Various arrangements described herein relate to a dual-sided display with improved light scattering. In one embodiment, a display is disclosed. The display includes an inside transparent layer disposed parallel to and spaced apart from an outside transparent layer. The display also includes a liquid crystal (LC) layer disposed between the inside transparent layer and the outside transparent layer and together forming a waveguide that is planar. The display includes ground electrodes disposed between the LC layer and the outside transparent layer and arranged in strips along the transparent layer, the strips being spaced apart and parallel. The display includes inside electrodes and outside electrodes disposed between the inside transparent layer and the LC layer and defining a geometric pattern that is in plane with the waveguide and a light source disposed at an edge surface of the waveguide and providing light along the waveguide.
    Type: Grant
    Filed: February 13, 2024
    Date of Patent: December 3, 2024
    Assignees: Toyota Motor Engineering & Manufacturing North America, Inc., Kent State University
    Inventors: Sean P. Rodrigues, Suman Halder, Deng-Ke Yang
  • Publication number: 20240184156
    Abstract: An aligned polymer dispersed liquid crystal film is useful for enhancing light efficiency of a quantum dot backlight. The film may be formed by a process including irradiating a mixture with UV light at a first intensity to form a first composition comprising an isotropic polymer matrix; and irradiating the first composition with UV light at a second intensity to form a second composition comprising an anisotropic polymer network. The mixture includes an isotropic monomer; a mesogenic monomer; photo-initiator and a liquid crystal.
    Type: Application
    Filed: December 4, 2023
    Publication date: June 6, 2024
    Applicant: KENT STATE UNIVERSITY
    Inventors: Deng-Ke Yang, Suman Halder