Patents by Inventor Wenhui Mei

Wenhui Mei 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: 20030025979
    Abstract: A distortion compensation system for use in an imaging device such as a photolithography system is described. The system projects a plurality of image portions onto a plurality of portions of a subject. The system includes a plurality of light-distance modulators corresponding to the plurality of image portions and a mechanical manipulator for individually manipulating each of the light-distance modulators. In this way, any distortion in the subject is compensated by the individual manipulation of the light-distance modulators.
    Type: Application
    Filed: December 28, 2001
    Publication date: February 6, 2003
    Applicant: Ball Semiconductor, Inc.
    Inventors: Kin Foong Chan, Wenhui Mei
  • Publication number: 20030026501
    Abstract: A system and method for extracting and manipulating image data is provided. A pixel panel is rotated so as to increase a resolution of a projected image. The rotation may be calculated so as to achieve a desired resolution. A portion of the image is retrieved from a memory and an address is calculated for either the portion or discrete bits in order to determine where the bits should appear on the pixel panel. The manipulated bits are transferred to a buffer, which may be a line or frame buffer, and from the buffer to the pixel panel. One or more shift registers may be used to shift the bits into the buffer.
    Type: Application
    Filed: August 3, 2001
    Publication date: February 6, 2003
    Applicant: Ball Semiconductor, Inc.
    Inventors: Wenhui Mei, Chad W. Mueller
  • Publication number: 20030025981
    Abstract: An apparatus and method for adjustably reflecting light is provided. The apparatus includes a base and, positioned above the base, a member having an upper surface and a lower surface. A reflective coating is applied to at least a portion of the upper surface. The system also includes a capacitive plate positioned between the member and the base. The capacitive plate is operable to deflect the member, which alters the orientation of the member relative to the base. A second member, which may be deformable, may be attached to the first member so that deformation of the second member alters the orientation of the first member relative to the base.
    Type: Application
    Filed: July 31, 2001
    Publication date: February 6, 2003
    Applicant: Ball Semiconductor, Inc.
    Inventors: Akira Ishikawa, Takashi Kanatake, Wenhui Mei, Wade P. Farrow, Chad Mueller, Phillip Ahrens, Zhiqiang Feng, Kin Chan
  • Patent number: 6512625
    Abstract: A light modulation element, device, and system is discussed. The light modulation element includes three electrodes, a flexible member, and a mirror. The flexible member is connected between the three electrodes so that the first and second electrodes are on one side and the third electrode is on the opposite side of the flexible member. The mirror is attached to the flexible member so that it can move therewith. The flexible member moves responsive to an external electrostatic force provided by one or more of the three electrodes so that the mirror is positioned in a predetermined position responsive to the state of the flexible member.
    Type: Grant
    Filed: December 1, 2000
    Date of Patent: January 28, 2003
    Assignee: Ball Semiconductor, Inc.
    Inventors: Wenhui Mei, Kin Foong Chan, Dong Youn Sim
  • Patent number: 6509955
    Abstract: A system for performing digital lithography onto a subject is provided. The system utilizes pixel panels to generate pixel patterns. Mirrors are utilized to divert and align the pixel elements forming the patterns onto a subject. A gradient lens system positioned between the panels and the subject simultaneously directs the pixel elements to the subject. The pixel elements may overlapping, adjacent, or spaced as desired. The pixel elements may be directed to multiple surfaces simultaneously. One or more point array units may be utilized in the system to achieve higher resolution.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: January 21, 2003
    Assignee: Ball Semiconductor, Inc.
    Inventors: Wenhui Mei, Takashi Kanatake
  • Patent number: 6498643
    Abstract: Method and apparatus are described for a spherical surface inspection system comprising a controller having software, an optical sensor connected to the controller, and an inspection device disposed adjacent to the optical sensor, and connected to the controller. The inspection device is for retaining and rotating the spherical-shaped object along a first axis to allow the optical sensor to convey an image of a portion of the surface of the spherical-shaped object to the controller. The inspection device also rotates the spherical-shaped object along a second axis to convey an image of more of the surface of the spherical-shaped object to the controller.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: December 24, 2002
    Assignee: Ball Semiconductor, Inc.
    Inventors: Wenhui Mei, Bright Qi, Bei Chen
  • Patent number: 6493867
    Abstract: A digital photolithography system is provided that is capable of making smooth diagonal components. The system includes a computer for providing a first digital pattern to a digital pixel panel, such as a deformable mirror device (DMD). The DMD is capable of providing a first plurality of pixel elements for exposure onto a plurality of wafer sites. After exposure, the wafer can be scanned a distance less than the site length. The DMD then receives a second digital pattern for exposing a second plurality of pixel elements onto the plurality of sites of the subject. The exposed second plurality of pixel elements overlaps the exposed first plurality of pixel elements. This overlapping allows incremental changes to be made in the image being exposed, thereby accommodating the creation of diagonal components.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: December 10, 2002
    Assignee: Ball Semiconductor, Inc.
    Inventors: Wenhui Mei, Takashi Kanatake
  • Publication number: 20020171047
    Abstract: A system for performing digital lithography onto a subject is provided. The system includes a laser diode or LED array for generating and projecting a digital pattern. The array has a plurality of lasers which may be controlled either individually or as a group to produce the desired pattern. A lens system may then direct the digital pattern to the subject, thereby enabling the lithography.
    Type: Application
    Filed: March 28, 2001
    Publication date: November 21, 2002
    Inventors: Kin Foeng Chan, Wenhui Mei, Jinhui Zhai, Akira Ishikawa
  • Publication number: 20020159044
    Abstract: A system for performing digital lithography onto a subject is provided. The system includes a telecentric lens system that utilizes a field lens for redirecting light without distortion. The field lens may be utilized with a microlens array, a grating, and other lenses to achieve a desired result. A Fresnel lens may be used in place of the field lens and may be combined with the microlens array into a diffraction optical element.
    Type: Application
    Filed: April 2, 2002
    Publication date: October 31, 2002
    Applicant: Ball Semiconductor, Inc.
    Inventors: Wenhui Mei, Takashi Kanatake
  • Patent number: 6473237
    Abstract: A system for performing digital lithography onto a subject is provided. The system includes a noncoherent light source for producing a first light and an optical diffraction element for individually focusing the first light into a plurality of second lights. The system also includes a pixel panel for generating a digital pattern, the pixel panel having a plurality of pixels corresponding to the plurality of second lights. A lens system may then direct the digital pattern to the subject, thereby enabling the lithography.
    Type: Grant
    Filed: March 8, 2001
    Date of Patent: October 29, 2002
    Assignee: Ball Semiconductor, Inc.
    Inventor: Wenhui Mei
  • Publication number: 20020149834
    Abstract: A light modulation element, device, and system is discussed. The light modulation element includes three electrodes, a rigid member, and a mirror. The rigid member is connected between the three electrodes so that the first and second electrodes are on one side and the third electrode is on the opposite side of the rigid member. The mirror is attached to the rigid member so that it can move therewith. The rigid member moves responsive to an external electrostatic force provided by one or more of the three electrodes so that the mirror is positioned in a predetermined position responsive to the state of the rigid member.
    Type: Application
    Filed: November 15, 2001
    Publication date: October 17, 2002
    Applicant: Ball Semiconductor, Inc.
    Inventors: Wenhui Mei, Kin Foong Chan, Dong Youn Sim
  • Publication number: 20020135814
    Abstract: A method for losslessly transmitting data is provided. The data is separated into two or more portions and the second portion is subtracted from the first portion to find a difference. The first portion and the difference are transmitted, and then the second portion is reconstructed by adding the difference to the first portion. The data may comprise two or more images, with each image being a temporally displaced version of the preceding image. Each image may be divided into multiple areas, where the areas on each image correspond to the areas on the other images. A difference may be obtained by subtracting each area of an image from the corresponding area of the preceding image. The first image may then be transferred as a reference image along with the differences, and each image may be reconstructed by adding each difference to the corresponding area of the previous image.
    Type: Application
    Filed: February 14, 2002
    Publication date: September 26, 2002
    Applicant: Ball Semiconductor, Inc.
    Inventors: Xiaoqi Zhou, Wenhui Mei, Takashi Kanatake, Kin Foong Chan
  • Publication number: 20020126479
    Abstract: A high power light source is provided. The light source includes one or more diodes that may produce relatively coherent light of a desired intensity. The diodes may be pulsed to provide light as desired. The light projected by the diodes passes through a combiner, which combines the light from the different diodes and passes the combined light to an incoherence apparatus. The incoherence apparatus may include a rotating surface relief phase device such as an optical hologram, a computer generated hologram, or a diffractive optical element with random phase modulation. The incoherence apparatus may include a rotating fiber conduit comprising a plurality of multifiber cores. The incoherence apparatus renders the combined light incoherent and passes it to an illuminator apparatus that focuses the incoherent combined light onto an image plane.
    Type: Application
    Filed: March 7, 2002
    Publication date: September 12, 2002
    Applicant: Ball Semiconductor, Inc.
    Inventors: Jinhui Zhai, Wenhui Mei, Kin Foong Chan
  • Patent number: 6444976
    Abstract: A system and method of utilizing spherical and hemispherical shaped devices to function as an optical switch is disclosed. The optical switch can contain mirrors that turn on and off, or are fixed in place with a movable spherical device. Additionally, the optical switches can contain grating patterns to deflect an optical signal from its original path. The grating patterns can vary in design and pattern to deflect the optical signal in almost any direction, or to not let the optical signal continue. The optical switch can also include photo sensors along the exterior of the sphere or along the reflection device. The optical switch can also include an integrated circuits.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: September 3, 2002
    Assignee: Ball Semiconductor, Inc.
    Inventors: Akira Ishikawa, Takashi Kanatake, Wenhui Mei
  • Patent number: 6433917
    Abstract: A light modulation element, device, and system is discussed. The light modulation element includes three electrodes, a flexible member, and a mirror. The flexible member is connected between the three electrodes so that the first and second electrodes are on one side and the third electrode is on the opposite side of the flexible member. The mirror is attached to the flexible member so that it can move therewith. The flexible member moves responsive to an external electrostatic force provided by one or more of the three electrodes so that the mirror is positioned in a predetermined position responsive to the state of the flexible member.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: August 13, 2002
    Assignee: Ball Semiconductor, Inc.
    Inventors: Wenhui Mei, Kin Foong Chan
  • Publication number: 20020101644
    Abstract: A light modulation element, device, and system is discussed. The light modulation element includes three electrodes, a flexible member, and a mirror. The flexible member is connected between the three electrodes so that the first and second electrodes are on one side and the third electrode is on the opposite side of the flexible member. The mirror is attached to the flexible member so that it can move therewith. The flexible member moves responsive to an external electrostatic force provided by one or more of the three electrodes so that the mirror is positioned in a predetermined position responsive to the state of the flexible member.
    Type: Application
    Filed: December 1, 2000
    Publication date: August 1, 2002
    Inventors: Wenhui Mei, Kin Foong Chan, Dong Youn Sim
  • Patent number: 6425669
    Abstract: A photolithography system and method for providing a pattern to a subject such as a wafer is provided. The system includes a pixel panel, such as a digital mirror device or a liquid crystal display, for generating for creating a plurality of pixel elements of the pattern. The pixel elements are simultaneously directed to a first site of the subject by a lense system. The system also includes a manipulator for moving the pixel elements, relative to the subject, to a second site of the subject so that a portion of the second site overlaps a portion of the first site.
    Type: Grant
    Filed: May 24, 2000
    Date of Patent: July 30, 2002
    Assignee: Ball Semiconductor, Inc.
    Inventors: Wenhui Mei, Takashi Kanatake, Karlton Powell
  • Publication number: 20020097495
    Abstract: A system for performing digital lithography onto a subject is provided. The system includes a noncoherent light source for producing a first light and an optical diffraction element for individually focusing the first light into a plurality of second lights. The system also includes a pixel panel for generating a digital pattern, the pixel panel having a plurality of pixels corresponding to the plurality of second lights. A lens system may then direct the digital pattern to the subject, thereby enabling the lithography.
    Type: Application
    Filed: March 8, 2001
    Publication date: July 25, 2002
    Inventor: Wenhui Mei
  • Publication number: 20020092993
    Abstract: A method for scaling a pixel location in a digital photolithography system by rotating a pixel panel is provided. The method determines the angle of rotation of the pixel panel relative to a subject and calculates the original location of the pixel to be scaled. The method calculates the desired location of the pixel and determines the angle through which the pixel panel should be rotated to align the pixel with the desired location in a first dimension. The scan rate of the pixel panel and the subject is altered to align the pixel with the desired location in a second dimension.
    Type: Application
    Filed: December 19, 2001
    Publication date: July 18, 2002
    Applicant: Ball Semiconductor, Inc.
    Inventors: Takashi Kanatake, Wenhui Mei, Akira Ishikawa
  • Patent number: 6379867
    Abstract: A photolithography system and method for providing a mask image to a subject such as a wafer is provided. The mask images are divided into sub-patterns and sequentially provided to a pixel panel, such as a deformable mirror device or a liquid crystal display. The pixel panel converts each sub-pattern into a plurality of pixel elements. Each of the pixel elements is then simultaneously focused to discrete, non-contiguous portions of the subject through a microlense array. The subject and pixel elements are then moved (e.g., one or both may be moved) and the next sub-pattern in the sequence is provided to the pixel panel. As a result, light can be projected on the subject, according to the pixel elements, to create a contiguous image on the subject.
    Type: Grant
    Filed: January 10, 2000
    Date of Patent: April 30, 2002
    Assignee: Ball Semiconductor, Inc.
    Inventors: Wenhui Mei, Takashi Kanatake, Akira Ishikawa