Parallax barrier, multiple display device and parallax barrier manufacturing method
Patent 7612834 Issued on November 3, 2009. Estimated Expiration Date: 
June 26, 2026. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 26, 2026. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesThree-dimensional image display device Image displaying unit of a 3D image system having multi-viewpoints capable of displaying 2D and 3D images selectively Patent #: 7336326 InventorsAssigneeApplicationNo. 11995146 filed on 06/26/2006US Classes:349/15StereoscopicExaminersPrimary: Qi, MikeAttorney, Agent or FirmForeign Patent References
International ClassesG02F 1/1335G02F 1/1333 AbstractA parallax barrier is manufactured by forming a light-blocking layer by patterning a metal layer or a resin layer on a barrier glass in a photolithography step. On a mask used in the photolithography step, some pitches between slits are different, the slits corresponding to portions whereupon the light-blocking layers are to be formed. In addition, on the mask, first pitches (for instance, 100) and second pitches (for instance 99.5), which can be actually formed with accuracy, are formed in a cycle, and the average of such pitches can be accord with a theoretical pitch distance (for instance, 99.99). Thus, in the parallax barrier to be used for a multiple display device, visibility of the entire screen can be improved, and the parallax barrier which can be manufactured by using the mask lithography technology having a limited accuracy, and a method for manufacturing such parallax barrier are provided.Other References
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