Liquid crystal display device
Patent 6597425 Issued on July 22, 2003. Estimated Expiration Date: 
May 3, 2021. 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.
May 3, 2021. 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 ReferencesLiquid crystal display device with acrylic polymer spacers and method of manufacturing the same Liquid crystal display device Smart spacers for active matrix liquid crystal projection light valves LCD cell having two supporting gap members different in height Liquid crystal display devices and processes for producing the same Patent #: 6299949 InventorsAssigneeApplicationNo. 847330 filed on 05/03/2001US Classes:349/156Formed as walls (e.g., between pixels) or integral with substrateExaminersPrimary: Ton, ToanAttorney, Agent or FirmForeign Patent References
International ClassG02F 001/133.9Foreign Application Priority Data2000-05-12 JPAbstractThere is provided a liquid crystal display device in which film thickness irregularities and rubbing irregularities of orientation films are minimized in which superior image quality is provided even when columnar spacers are disposed therein. The liquid crystal display device has a structure in which a liquid crystal substance is sandwiched between a pair of substrates facing each other with the space therebetween controlled to a specific value by a plurality of the columnar spacers independent from each other, wherein the placement density of the columnar spacers is 100 to 2000/mm2, and the sectional area of the columnar spacers is 1 to 100 μm2. | |
