Patents by Inventor David E. Stevenson

David E. Stevenson 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).

  • Publication number: 20150060125
    Abstract: A touch panel includes a substrate, a plurality of first axis electrodes, a plurality of second axis electrodes and a first insulation layer. Each first axis electrode includes a plurality of first sub-electrodes and a plurality of first connection parts disposed between two adjacent first sub-electrodes. The first sub-electrodes and the first connection parts are monolithically formed. Each second axis electrode includes a plurality of second sub-electrodes and a plurality of second connection parts disposed between two adjacent second sub-electrodes. The second sub-electrodes and the second connection parts are monolithically formed. The first sub-electrodes and the second sub-electrodes are disposed on an identical surface. The first insulation layer is disposed on and completely covers the first axis electrodes. The first insulation layer is partially disposed between the first connection part and the second connection part.
    Type: Application
    Filed: September 4, 2014
    Publication date: March 5, 2015
    Inventors: David E. Stevenson, Siang-Lin Huang, Chia-Chi Chen, Kuo-Chang Su
  • Publication number: 20130234005
    Abstract: An image sensor for detecting a first and a second image light in different directions is disclosed. The image sensing device comprises a polarization beam splitter, a liquid crystal switch, a polarizer, a lens module and an image sensing device. The polarization beam splitter receives and splits the first and the second image light respectively into a first penetrative light, a first reflective light, a second penetrative light and a second reflective light. The liquid crystal switch controls the phase delay of the first and the second reflective light. The polarizer is disposed on the light emitting side of the liquid switch to control the passage of the first or the second reflective light. The lens module focuses the first or the second reflective light at a focal point. The image sensing device is disposed at the focal point to sense the focused first or second reflective light.
    Type: Application
    Filed: March 6, 2013
    Publication date: September 12, 2013
    Applicants: WINTEK CORPORATION, WINTEK (CHINA) TECHNOLOGY LTD.
    Inventors: Wen-Chun Wang, David E. Stevenson, Jyh-Yeuan Ma, Chong-Yang Fang, Tsung-Hsien Lin, Tsung-Yen Hsieh, Chia-Hung Yeh
  • Patent number: 7790060
    Abstract: Silicon oxide and electrically conductive doped silicon materials are sintered in a protective environment to yield a composite SiOx:Si material that exhibits the properties of SiOx, and yet is electrically conductive due to the presence of Si. Such a composite material finds many uses, such as a target for DC and/or AC sputtering processes to produce silicon oxide thin films for touch-screen applications, barrier thin films in LCD displays and optical thin films used in a wide variety of applications.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: September 7, 2010
    Assignee: Wintek Electro Optics Corporation
    Inventors: David E. Stevenson, Li Q. Zhou
  • Patent number: 7749406
    Abstract: Silicon oxide and electrically conductive doped silicon materials are joined in a protective environment to yield a composite SiOx:Si material that exhibits the properties of SiOx, and yet is electrically conductive due to the presence of the Si. Such a composite material finds use as a target for DC and/or AC sputtering processes to produce silicon oxide thin films for touch-screen applications, barrier thin films in LCD displays and optical thin films used in a wide variety of applications.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: July 6, 2010
    Inventors: David E. Stevenson, Li Q. Zhou
  • Patent number: 7658822
    Abstract: Article are made from silicon oxide and electrically conductive doped silicon materials that are joined in a protective environment to yield a composite SiOx:Si material that exhibits the properties of SiOx and yet is electrically conductive due to the presence of the Si. Articles from such composite materials find many uses, such as for targets for DC and/or AC sputtering processes to produce silicon oxide thin films for touch-screen application, barrier thin films in LCD displays and optical thin films used in a wide variety of applications.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: February 9, 2010
    Assignee: Wintek Electro-Optics Corporation
    Inventors: David E. Stevenson, Li Q. Zhou
  • Publication number: 20080296149
    Abstract: An AC or DC sputtering target for depositing thin films of chromium sub oxides on a substrate contains oxides of chromium, chromium metal and incorporated oxygen. The target has a resistivity of 200?·cm or less. The target can be made from a combination of oxides of chromium powder and chromium metal, such as in powder form, or can be made starting with 100% chromium oxide or sub oxide material that is subjected to a reducing atmosphere either before or during the process of making the target in order to reduce a fraction of the chromium oxide and/or sub oxide material to chromium metal and retained oxygen. Such a target can enable the sputtering process to be conducted using inert argon gas only to yield a thin film of chromium oxide. This enables the surface of the target to remain in a continuously stable condition and free of the arcing problems associated with using chromium targets and argon and oxygen gas.
    Type: Application
    Filed: October 19, 2007
    Publication date: December 4, 2008
    Inventors: David E. Stevenson, Li Q. Zhou
  • Patent number: 5541770
    Abstract: An anti-reflection coating includes a first layer of a transparent material having a low refractive index a second layer of an absorbing metal, a third layer of a material which may have a high or a low refractive index and a fourth layer of titanium nitride.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: July 30, 1996
    Assignee: Photran Corporation
    Inventors: Samuel F. Pellicori, David E. Stevenson
  • Patent number: 5421979
    Abstract: Vacuum coating apparatus (30) includes a coating chamber (32), and a load-lock chamber (34) connected to the coating chamber via a high vacuum valve (44). The coating chamber includes deposition-devices (123) and a cylindrical or drum shaped substrate-transporter (100) for transporting substrates (64) past the deposition-devices. Substrates are carried on substrate-carriers (66) which are configured to fit into transport-stations (102) around the periphery of the substrate-transporter. A magazine (61) holding a plurality of substrate-carriers is located in the load-lock chamber. An injector arrangement (120) is provided for ejecting a substrate-carrier from the magazine, transporting the substrate-carrier through the high vacuum valve, and inserting the substrate-carrier into a transport-station of the substrate-carrier.
    Type: Grant
    Filed: August 3, 1993
    Date of Patent: June 6, 1995
    Assignee: Photran Corporation
    Inventor: David E. Stevenson
  • Patent number: 5328585
    Abstract: A linear planar-magnetron sputtering cathode comprises a cathode body (22) including two side-walls (104) two end-walls (106) and a target-supporting member (102) attached to the walls. The cathode body encloses a magnet array (40) which may be moved reciprocally in at least one direction relative to the cathode body. A cooling fluid may be flowed through the target supporting member for cooling the target. A cooling fluid may also be flowed through the side-walls and the end-walls for cooling the end walls. A cooled enclosure is thus be provided for the magnet-array.
    Type: Grant
    Filed: December 11, 1992
    Date of Patent: July 12, 1994
    Assignee: Photran Corporation
    Inventors: David E. Stevenson, Geoffrey H. Humberstone
  • Patent number: 5200049
    Abstract: An apparatus for rotatably mounting a cylindrical magnetron in a vacuum chamber. The apparatus includes a bearing housing having one end extending into the vacuum chamber with the other end located outside the chamber. A drive shaft is rotatably mounted in the bearing housing. Each end of the drive shaft extends beyond the housing. The cylindrical magnetron is attached to the end of the drive shaft inside the chamber. A vacuum seal is located in the bearing housing for sealing the drive shaft to the housing. The drive shaft is mounted in the housing such that the load of the magnetron is not transferred to the vacuum seal.
    Type: Grant
    Filed: July 29, 1991
    Date of Patent: April 6, 1993
    Assignee: Viratec Thin Films, Inc.
    Inventors: David E. Stevenson, Erik J. Bjornard, Geoffrey H. Humberstone
  • Patent number: 5100527
    Abstract: A rotatable magnetron having a cathode and a bearing assembly wherein the cathode may be removed from a coating chamber while the bearing assembly remains in place.
    Type: Grant
    Filed: October 18, 1990
    Date of Patent: March 31, 1992
    Assignee: Viratec Thin Films, Inc.
    Inventors: David E. Stevenson, Erik J. Bjornard, Geoffrey Humberstone
  • Patent number: 4966062
    Abstract: A guitar support apparatus which supports a guitar in the playing position while the guitarist is in the sitting position, consisting of a leg support strap supporting three legs hinged together and having guitar support means opposite the strap.
    Type: Grant
    Filed: February 9, 1990
    Date of Patent: October 30, 1990
    Inventors: Robert H. Driggers, David E. Stevenson
  • Patent number: D743480
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: November 17, 2015
    Inventor: David E. Stevenson