Patents by Inventor Chung-Kuang Wei

Chung-Kuang Wei 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: 20080309854
    Abstract: Apparatus, devices, systems, and methods for wide viewing angle and broadband circular polarizers in transflective displays. A liquid crystal display configuration can include two stacked circular polarizers, each having a linear polarizer, a half-wave plate and a quarter-wave plate wherein two linear polarizers are crossed to each other, two half-wave plates are made of uniaxial A plates with opposite optical birefringence (one positive and one negative type), and two quarter-wave plates are made of uniaxial A plates with opposite optical birefringence (one positive and one negative type). The configurations can generate wide viewing angles and broadband properties and are suitable for display applications that require circular polarizers.
    Type: Application
    Filed: June 15, 2007
    Publication date: December 18, 2008
    Inventors: Zhibing Ge, Meizi Jiao, Ruibo Lu, Thomas Xinzhang Wu, Shin-Tson Wu, Wang-Yang Li, Chung-Kuang Wei
  • Publication number: 20080309853
    Abstract: Apparatus, methods and systems for a transmissive liquid crystal display including a plurality of pixel circuits, each pixel circuit including a reflective region and a transmissive region. The reflective region includes a polarization dependent reflector for reflecting ambient light. The reflective and transmissive regions include an initially homogeneously aligned liquid crystal layer sandwiched between a first and a second substrate. Each pixel further includes at lease one first transparent electrode as the common electrode and at least one second transparent electrode as the pixel electrode both formed on one of the same first and second substrates, wherein substantial fringe fields with rich horizontal electric fields are generated in the liquid crystal layer when voltage is applied to the pixel electrode, making the liquid crystal molecules rotate mainly in the horizontal direction to achieve wide viewing angle.
    Type: Application
    Filed: June 15, 2007
    Publication date: December 18, 2008
    Inventors: Zhibing Ge, Thomas Xinzhang Wu, Shin-Tson Wu, Wang-Yang Li, Chung-Kuang Wei
  • Publication number: 20080231781
    Abstract: A transflective display includes pixels each including a first electrode, a second electrode, a liquid crystal layer associated with the first and second electrodes, and a conductive reflective layer between the liquid crystal layer and the second electrode to reflect ambient light. The conductive reflective layer is insulated from the second electrode and covers less than all of the second electrode to allow backlight to be transmitted through a portion of the pixel not covered by the conductive reflective layer.
    Type: Application
    Filed: March 21, 2007
    Publication date: September 25, 2008
    Applicants: Chi Mei Optoelectronics Corporation, University of Central Florida Research Foundation, Inc.
    Inventors: Zhibing Ge, Xinyu Zhu, Ruibo Lu, Thomas Xinzhang Wu, Shin-Tson Wu, Wang-Yang Li, Chung-Kuang Wei
  • Publication number: 20080225189
    Abstract: In accordance with one embodiment of the present invention, a first pixel of an LCD panel is driven via a first scan line to a first pixel voltage during a first scan period and to a second pixel voltage during a second scan period. Also, a second pixel is driven via the first scan line and a second scan line to the first pixel voltage during the first scan period.
    Type: Application
    Filed: February 1, 2008
    Publication date: September 18, 2008
    Inventors: Chang-Hao Yang, Yung Shun Yang, Chung Kuang Wei
  • Publication number: 20080218645
    Abstract: A display includes pixel circuits, each pixel circuit including a first electrode, a second electrode, a third electrode, and a liquid crystal layer doped with a chiral material. The first electric is electrically coupled to a first reference voltage. The second electrode receives a pixel voltage corresponding to a gray scale level, the second electrode including a conducting layer having openings. The third electrode is electrically coupled to a second reference voltage. The second electrode is between the first and third electrodes, and the liquid crystal layer is between the first and second electrodes.
    Type: Application
    Filed: March 7, 2007
    Publication date: September 11, 2008
    Applicants: CHI MEI OPTOELECTRONICS CORPORATION, University of Central Florida Research Foundation, Inc.
    Inventors: Xinyu Zhu, Zhibing Ge, Shin-Tson Wu, Wang-Yang Li, Chung-Kuang Wei
  • Publication number: 20080204636
    Abstract: A display includes a plurality of pixel circuits, each pixel circuit including a first electrode, a second electrode, a reflective region, and a transmissive region. The reflective region reflects ambient light and includes a first portion of a liquid crystal layer and a polarization dependent reflector. The transmissive region transmits backlight and includes a second portion of the liquid crystal layer. A dielectric layer is between the first and second electrodes in one of the reflective region and the transmissive region, the dielectric layer configured such that when a pixel voltage is applied to the first and second electrodes, the percentage of the pixel voltage applied across the first portion of the liquid crystal layer is different from the percentage of the pixel voltage applied across the second portion of the liquid crystal layer. The display includes a backlight module to generate the backlight.
    Type: Application
    Filed: February 26, 2007
    Publication date: August 28, 2008
    Applicants: CHI MEI OPTOELECTRONICS CORPORATION, UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Zhibing Ge, Xinyu Zhu, Thomas Xinzhang Wu, Shin-Tson Wu, Wang-Yang Li, Chung-Kuang Wei
  • Publication number: 20080186436
    Abstract: A transflective liquid crystal display (LCD) panel includes an active device array substrate, an opposite substrate, and a liquid crystal layer in between. The active device array substrate includes scan lines, data lines, and pixel units. Each pixel unit includes an active device, a reflective pixel electrode, and a transparent pixel electrode. The active device is electrically connected to the corresponding scan line and data line. The reflective pixel electrode and the transparent pixel electrode are respectively disposed in a reflective region and a transmissive region and both electrically connected to the active device. The liquid crystal molecules in the reflective region are pre-tilted at a pretilt angle.
    Type: Application
    Filed: January 31, 2008
    Publication date: August 7, 2008
    Applicant: CHI MEI OPTOELECTRONICS CORP.
    Inventors: Cheng-Jen Chu, Chen-Kuan Kao, Chung-Kuang Wei
  • Publication number: 20080165309
    Abstract: A display includes pixel circuits each having a liquid crystal layer, a storage capacitor to store an electric charge corresponding to a data voltage, and a controller to enable different percentages of the data voltage to be applied to the liquid crystal layer depending on an operation state of the display.
    Type: Application
    Filed: January 9, 2007
    Publication date: July 10, 2008
    Applicant: CHI MEI OPTOELECTRONICS CORPORATION
    Inventors: Zhibing Ge, Xinyu Zhu, Thomas Xinzhang Wu, Shin-Tson Wu, Wang-Yang Li, Chung-Kuang Wei
  • Publication number: 20080151149
    Abstract: A liquid crystal display includes a first substrate having a first electrode and a first alignment film, a second substrate having a second electrode and a second alignment film, and a liquid crystal layer having liquid crystal molecules between the first and second substrates. The liquid crystal layer is doped with a chiral material that tends to induce a twist in directors of the liquid crystal molecules when an electric field is applied to the liquid crystal layer using the first and second electrodes. The first alignment film has a first alignment direction, the second alignment film has a second alignment direction, and the first and second alignment films have orientations that tend to induce a twist in the directors when an electric field is applied to the liquid crystal layer, in which the direction of twist induced by the first and second alignment films is different from the direction of twist induced by the chiral material.
    Type: Application
    Filed: December 22, 2006
    Publication date: June 26, 2008
    Inventors: Ju-Hyun Lee, Shin-Tson Wu, Wang-Yang Li, Chung-Kuang Wei
  • Publication number: 20080151148
    Abstract: A liquid crystal display includes a first alignment film having a first alignment direction, a second alignment film having a second alignment direction, and a liquid crystal layer having liquid crystal molecules between the first and second alignment films. The liquid crystal layer is doped with a chiral material that tends to induce a first twist in directors of the liquid crystal molecules when an electric field is applied to the liquid crystal layer. The first and second alignment films have orientations that tends to induce a second twist in the directors when an electric field is applied to the liquid crystal layer, in which the direction of the first twist is different from the direction of the second twist.
    Type: Application
    Filed: December 22, 2006
    Publication date: June 26, 2008
    Inventors: Ju-Hyun Lee, Shin-Tson Wu, Wang-Yang Li, Chung-Kuang Wei
  • Patent number: 7264373
    Abstract: A backlight module (BLM) including a bezel, at least a first lamp and at least a second lamp is provided. The bezel has a first lighe region and is arranged substantially in parallel to the top side of the bezel. The second lamp is positioned in the second light source region and is arranged substantially in parallel to the top side of the bezel. The second lamp corresponds to the first lamp.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: September 4, 2007
    Assignee: Chi Mei Optoelectronics Corp.
    Inventors: Kuo-Tsun Huang, Hsin-Cheng Hung, Chung-Kuang Wei
  • Patent number: 7170572
    Abstract: The invention provides a manufacturing process of transflective TFT-LCD panel (transflective TFT-LCD panel) comprising the following steps: first, form a first conductive layer on the substrate; next, define the first conductive layer to form a gate; after that, form a dielectric layer on the gate; following that, form a channel over the gate; then, form a photo-resist block; form a second conductive layer; next, define the second conductive to form a source and a drain over the gate, and to form a photo-reflective layer on the photo-resist block; after that, form a protection layer thereon; following that, define the protection layer to form a first opening on the photo-reflective layer allowing part of the drain to be exposed, and to form a second opening on the photo-reflective layer allowing part of the photo-reflective layer to be exposed; last, form a transparent electrode being electrically connected to the drain and the photo-reflective layer via the first and the second opening respectively.
    Type: Grant
    Filed: December 31, 2003
    Date of Patent: January 30, 2007
    Assignee: Chi Mei Optoelectronics Corp.
    Inventors: Wen-Jyh Sah, Chung-Kuang Wei, Cheng-Jen Chu
  • Patent number: 7092064
    Abstract: A liquid crystal display device includes a pair of transparent substrates, a liquid crystal layer sandwiched between inner surfaces of the transparent substrates, and a pair of optical films each attached on an outer surface of the transparent substrate via a transparent adhesive layer. The transparent adhesive layer has an outer surface facing the optical film. The outer surface of each transparent substrate has a first Ra surface roughness, and the outer surface of the adhesive layer has a second Ra surface roughness which is smaller than the first Ra surface roughness. The present invention further provides a method for manufacturing the liquid crystal display device.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: August 15, 2006
    Assignee: Chi-Mei Optoelectronics Corp.
    Inventors: Hsing Chj Lung, Chun Bin Wen, Hung I Tseng, Chung Kuang Wei
  • Publication number: 20060120108
    Abstract: A backlight module (BLM) including a bezel, at least a first lamp and at least a second lamp is provided. The bezel has a first lighe region and is arranged substantially in parallel to the top side of the bezel. The second lamp is positioned in the second light source region and is arranged substantially in parallel to the top side of the bezel. The second lamp corresponds to the first lamp.
    Type: Application
    Filed: October 20, 2005
    Publication date: June 8, 2006
    Applicant: CHI MEI OPTOELECTRONICS CORP.
    Inventors: Kuo-Tsun Huang, Hsin-Cheng Hung, Chung-Kuang Wei
  • Publication number: 20060050049
    Abstract: A display method used for a display which has a backlight module suitable to provide more than M types of primary color lights, where M=3. The display panel of the display has an array of pixel regions. The display method provides these pixels regions to display multiple image data to be display in multiple frame times. Each of the image data includes (L1N, L2N, . . . , LMN) each representing the brightness of the M primary color light in each pixel region, where N is a positive integer. The backlight module sequentially provides M-1 primary color lights within any two successive frame times, so allow the image data to drive the pixel regions. The first and the Mth primary color lights provide the frame times for these two successive frame times.
    Type: Application
    Filed: September 6, 2005
    Publication date: March 9, 2006
    Inventors: Chao-Lien Lin, Fu-Cheng Chen, Chung-Kuang Wei
  • Patent number: 6986983
    Abstract: A reflection-type light diffuser is fabricated on a glass substrate, which has a pixel matrix array disposed thereon. The pixel matrix array includes a plurality of adjacent pixel regions, and each of the pixel regions has a pair of side edges that are parallel and opposite. A photoresist pattern is formed on the glass substrate, and the photoresist pattern includes a plurality of wave-shaped straight protrusions formed on the side edges of each of the pixel regions and a plurality of bump structures formed on each of the pixel regions. A reflective metal layer is formed on the photoresist pattern.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: January 17, 2006
    Assignee: Chi Mei Optoelectronics Corporation
    Inventors: Chung-Kuang Wei, Cheng-Jen Chu, Chia-Liang Lin
  • Publication number: 20060007105
    Abstract: A displaying method and device. The display device includes a back light module and a display panel. The back light module emits at least M color lights. The display panel includes a plurality of pixel areas arranged in array structure, wherein each pixel area comprises N color filters, and at least one of the color filters is for passing through a plurality of primary color lights. In the displaying method, the back light module provides at least M color lights in a frame time, and a frame is displayed by arranging the M color lights and the N color filters in each pixel area, wherein M?2 and N?2. Moreover, the display panel may include an active component array substrate, a liquid crystal layer and a color filter substrate. In addition, any two adjacent pixel areas can share at least one color filter.
    Type: Application
    Filed: May 31, 2005
    Publication date: January 12, 2006
    Applicant: Chi Mei Optoelectronics Corporation
    Inventors: Fu-Cheng Chen, Chao-Lien Lin, Cheng-Jen Chu, Chung-Kuang Wei
  • Patent number: 6872587
    Abstract: A semiconductor substrate with a control circuit and electrodes thereon is used in a method of fabricating a liquid crystal on silicon display panel. First, a transparent conductive layer is formed on the semiconductor substrate and a cell gap is formed between the semiconductor substrate and the transparent conductive layer. A liquid crystal filling process is performed to fill the cell gap with a liquid crystal material including liquid crystal molecules and monomers. A uniform magnetic field is formed to pass through the panel so that the liquid crystal molecules and monomers are aligned in a predetermined tilt direction along the direction of the magnetic field. Next, a curing process is performed so that the monomers form a polymer network with the predetermined tilt direction. Thus, when an electric field is formed between the electrodes and the transparent conductive layer, the liquid crystal molecules rotate along the predetermined tilt direction.
    Type: Grant
    Filed: January 22, 2003
    Date of Patent: March 29, 2005
    Assignee: Chi Mei Optoelectronics Corporation
    Inventors: Chung-Kuang Wei, Wang-Yang Li
  • Patent number: 6861789
    Abstract: A backlight unit is disposed beneath a display panel. The backlight unit includes an illumination means, which is used to provide a light source, and a diffuser positioned between the illumination means and the display panel, which is used to scatter the light generated by the illumination means. The diffuser, which is composed of liquid crystal particles and polymer, has a plurality of regions. The region thatis closer to the illumination means has greater scattering effect. In addition, the region with the greatest scattering effect has a shape corresponding to the illumination means.
    Type: Grant
    Filed: October 1, 2002
    Date of Patent: March 1, 2005
    Assignee: Chi Mei Optoelectronics Corporation
    Inventor: Chung-Kuang Wei
  • Patent number: 6831718
    Abstract: A liquid crystal display (LCD) device mainly includes a first substrate, a second substrate and a liquid crystal layer provided between the inner-surfaces of the first and the second substrates. The first substrate has a plurality of pixel regions arranged in a matrix, wherein each of the pixel regions is provided with a switching element (e.g., TFT), a reflection electrode (as an ambient light reflector) and a transmission electrode (as a backlight transmitter). The second substrate is provided with color filter elements for displaying colors and a common electrode. The LCD according to the present invention is characterized by having an extra color filter layer provided in each of the pixel regions of the first substrate for improving the color saturation in the transmissive mode.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: December 14, 2004
    Assignee: Chi Mei Optoelectronics Corp.
    Inventors: Chung Kuang Wei, Chen Lung Kuo