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).

  • Patent number: 6809718
    Abstract: A thin film transistor liquid crystal display (TFT-LCD) capable of adjusting its light source utilizes at least one thin film transistor (TFT) disposed in a peripheral region of a bottom substrate as a photo sensor for detecting ambient illumination. Then, a light source modulator can enhance, weaken, open or close the light source of the TFT-LCD to an optimal brightness level that depends on the ambient illumination spontaneously.
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: October 26, 2004
    Assignee: Chi Mei Optoelectronics Corporation
    Inventors: Chung-Kuang Wei, Chao-Wen Wu
  • Patent number: 6806934
    Abstract: A liquid crystal display (LCD) includes a dielectric multilayer formed inside an LCD cell and a light source behind the LCD cell wherein an image is generated by the LCD in accordance with input video signals when either ambient light is incident on the surface of the dielectric multilayer or when light is generated by the light source. The LCD cell has a first substrate and a second substrate being located facing each other with a liquid crystal layer therebetween. The dielectric multilayer includes multiple layers of transparent dielectric materials with different refractive index. In the LCD of the present invention, since the dielectric multilayer is formed inside the LCD cell, the light only passes through one of the substrates in the reflective mode thereby increasing efficiency while meeting the need for low power consumption.
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: October 19, 2004
    Assignee: Chi Mei Optoelectronics Corp.
    Inventors: Hiroyuki Furuhashi, Chung Kuang Wei, Chao Wen Wu
  • Publication number: 20040179156
    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: Application
    Filed: December 31, 2003
    Publication date: September 16, 2004
    Inventors: Wen-Jyh Sah, Chung-Kuang Wei, Cheng-Jen Chu
  • Patent number: 6674496
    Abstract: A liquid crystal display (LCD) device has a first side and a second side in parallel with the first side. The LCD device includes a front light source positioned on the first side of the LCD device for generating light beams, and a transflective liquid crystal panel. The transflective liquid crystal panel includes a first glass substrate located between the front light source and the second side of the LCD device, a second glass substrate located between the first glass substrate and the second side of LCD device, and a transflective layer located between the first glass substrate and the second glass substrate for reflecting and transmitting the light beams generated by the front light source. The LCD devices can display images both through the first side and through the second side.
    Type: Grant
    Filed: July 17, 2002
    Date of Patent: January 6, 2004
    Assignee: Chi Mei Optoelectronics Corporation
    Inventor: Chung-Kuang Wei
  • Publication number: 20030161940
    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 slit structures 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: Application
    Filed: February 21, 2003
    Publication date: August 28, 2003
    Inventors: Chung-Kuang Wei, Cheng-Jen Chu, Chia-Liang Lin
  • Publication number: 20030146680
    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: Application
    Filed: October 1, 2002
    Publication date: August 7, 2003
    Inventor: Chung-Kuang Wei
  • Publication number: 20030137485
    Abstract: A thin film transistor liquid crystal display (TFT-LCD) capable of adjusting its light source utilizes at least one thin film transistor (TFT) disposed in a peripheral region of a bottom substrate as a photo sensor for detecting ambient illumination. Then, a light source modulator can enhance, weaken, open or close the light source of the TFT-LCD to an optimal brightness level that depends on the ambient illumination spontaneously.
    Type: Application
    Filed: June 12, 2002
    Publication date: July 24, 2003
    Inventors: Chung-Kuang Wei, Chao-Wen Wu
  • Publication number: 20030138982
    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: Application
    Filed: January 22, 2003
    Publication date: July 24, 2003
    Inventors: Chung-Kuang Wei , Wang-Yang Li
  • Publication number: 20030132713
    Abstract: A liquid crystal display (LCD) device has a first side and a second side in parallel with the first side. The LCD device includes a front light source positioned on the first side of the LCD device for generating light beams, and a transflective liquid crystal panel. The transflective liquid crystal panel includes a first glass substrate located between the front light source and the second side of the LCD device, a second glass substrate located between the first glass substrate and the second side of LCD device, and a transflective layer located between the first glass substrate and the second glass substrate for reflecting and transmitting the light beams generated by the front light source. The LCD devices can display images both through the first side and through the second side.
    Type: Application
    Filed: July 17, 2002
    Publication date: July 17, 2003
    Inventor: Chung-Kuang Wei
  • Publication number: 20030133059
    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: Application
    Filed: May 17, 2002
    Publication date: July 17, 2003
    Applicant: CHI MEI OPTOELECTRONICS CORP.
    Inventors: Chung Kuang Wei, Chen Lung Kuo
  • Publication number: 20030112406
    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: Application
    Filed: April 8, 2002
    Publication date: June 19, 2003
    Applicant: CHI MEI OPTOELECTRONICS CORP.
    Inventors: Hsing Chj Lung, Chun Bin Wen, Hung I Tseng, Chung Kuang Wei
  • Publication number: 20030020856
    Abstract: A liquid crystal display (LCD) includes a dielectric multilayer formed inside an LCD cell and a light source behind the LCD cell wherein an image is generated by the LCD in accordance with input video signals when either ambient light is incident on the surface of the dielectric multilayer or when light is generated by the light source. The LCD cell comprises a first substrate and a second substrate being located facing each other with a liquid crystal layer therebetween. The dielectric multilayer is composed of multiple layers of transparent dielectric materials with different refractive index. In the LCD of the present invention, since the dielectric multilayer is formed inside the LCD cell, the light only passes through one of the substrates in the reflective mode thereby increasing efficiency while meeting the need for low power consumption.
    Type: Application
    Filed: May 14, 2002
    Publication date: January 30, 2003
    Applicant: CHI MEI OPTOELECTRONICS CORP.
    Inventors: Hiroyuki Furuhashi, Chung Kuang Wei, Chao Wen Wu
  • Patent number: 6377326
    Abstract: The present invention is provided a two-domain vertical aligned LCD with negative compensator. The liquid crystal molecules in each of the liquid crystal domains are orientated nearly perpendicular to surfaces of the transparent substrates with a little pre-tilted angle to the normal of said substrates when an electric field is not applied, the tilt angle projected on the azimuthal of substrate between the orientation of liquid crystal molecules in two domains are not equal to 180 degree, and the orientation of said liquid crystal molecules in two domains are oriented opposed direction. The structure that described above is obtained by ultraviolet exposure process.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: April 23, 2002
    Assignee: Industrial Technology Research Institute
    Inventors: Chen-Lung Kuo, Hong-Da Liu, Chung-Kuang Wei
  • Patent number: 6313899
    Abstract: A wide viewing angle liquid crystal display is provided. The present invention includes a first substrate, a second substrate, a liquid crystal layer, a plurality of pixels, a common electrode, a plurality of protrusions, a plurality of control electrodes, a first orientation layer and a second orientation layer. The liquid crystal layer is interposed between the first substrate and the second substrate. The plurality of pixels are arranged in a matrix and disposed on the first substrate, each pixel has a pixel electrode and a switching means connected to it. The common electrode is disposed on the second substrate. The plurality of protrusions are composed of dielectric material and at least one of the plurality of protrusions is disposed on each pixel electrode. Each of the plurality of control electrodes is disposed on top of one of the plurality of protrusions.
    Type: Grant
    Filed: August 5, 1999
    Date of Patent: November 6, 2001
    Assignee: Chi Mei Electronics Corporation
    Inventors: Biing-seng Wu, Chen-lung Kuo, Chung-kuang Wei
  • Patent number: 6300993
    Abstract: The present invention is provided a two-domain vertical aligned LCD with negative compensator. The liquid crystal molecules in each of the liquid crystal domains are orientated nearly perpendicular to surfaces of the transparent substrates with a little pre-tilted angle to the normal of said substrates when an electric field is not applied, the tilt angle projected on the azimuthal of substrate between the orientation of liquid crystal molecules in two domains are not equal to 180 degree, and the orientation of said liquid crystal molecules in two domains are oriented opposed direction. The structure that described above is obtained by ultraviolet exposure process.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: October 9, 2001
    Assignee: Industrial Technology Research Institute
    Inventors: Chen-Lung Kuo, Hong-Da Liu, Chung-Kuang Wei
  • Patent number: 6292244
    Abstract: The present invention is provided a two-domain vertical aligned LCD with negative compensator. The liquid crystal molecules in each of the liquid crystal domains are orientated nearly perpendicular to surfaces of the transparent substrates with a little pre-tilted angle to the normal of said substrates when an electric field is not applied, the tilt angle projected on the azimuthal of substrate between the orientation of liquid crystal molecules in two domains are not equal to 180 degree, and the orientation of said liquid crystal molecules in two domains are oriented opposed direction. The structure that described above is obtained by ultraviolet exposure process.
    Type: Grant
    Filed: July 12, 2000
    Date of Patent: September 18, 2001
    Assignee: Industrial Technology Research Institute
    Inventors: Chen-Lung Kuo, Hong-Da Liu, Chung-Kuang Wei
  • Publication number: 20010009449
    Abstract: The present invention is provided a two-domain vertical aligned LCD with negative compensator. The liquid crystal molecules in each of the liquid crystal domains are orientated nearly perpendicular to surfaces of the transparent substrates with a little pre-tilted angle to the normal of said substrates when an electric field is not applied, the tilt angle projected on the azimuthal of substrate between the orientation of liquid crystal molecules in two domains are not equal to 180 degree, and the orientation of said liquid crystal molecules in two domains are oriented opposed direction. The structure that described above is obtained by ultraviolet exposure process.
    Type: Application
    Filed: March 22, 2001
    Publication date: July 26, 2001
    Applicant: Industrial Technology Research Institute
    Inventors: Chen-Lung Kuo, Hong-Da Liu, Chung-Kuang Wei
  • Patent number: 6157425
    Abstract: A liquid crystal display device comprises extended polymer networks formed in the liquid crystal cells. By adding a monomer and a photo-initiator into the liquid crystal material of a liquid crystal display, applying a bias voltage and exposing the display under a UV light, a polymer network can be formed. The polymer network modifies the electro-optical characteristic of a liquid crystal display device. With different bias voltages, polymer networks of different structures can be formed so that the color difference of the liquid crystal display with respect to red, green and blue light can be minimized. Liquid crystal display devices of fast switching response and low color dispersion can be fabricated.
    Type: Grant
    Filed: August 2, 1999
    Date of Patent: December 5, 2000
    Assignee: Industrial Technology Research Institute
    Inventors: Chen-Lung Kuo, Chung-Kuang Wei, Yong-Hong Lu
  • Patent number: 6043860
    Abstract: A method for manufacturing a liquid crystal display having both wide angle viewing and fast response is described. A key feature of the method is the addition to the liquid crystal of a small amount of a monomer, selected from among the diacrylates or the monoacrylates, as well as a chiral dopant. Once the display has been assembled, the usual turn-on voltage (about 5 volts) is applied. After allowing the orientations of the directors to stabilize, the liquid crystal is irradiated with ultraviolet light for a few seconds. This causes the dissolved monomer to polymerize in place. The UV irradiation and applied voltage are then terminated. Defects that slow down the director stabilization are now prevented from re-forming so that the next time voltage is applied, the system responds in a few milliseconds. Adding a photoinitiator, in addition to the monomer, is an option.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: March 28, 2000
    Assignee: Industrial Technology Research Institute
    Inventors: Chung-Kuang Wei, Chen-Lung Kuo, Yong-Hong Lu, Chieh-Li Chen
  • Patent number: 6014194
    Abstract: A liquid crystal display device comprises extended polymer networks formed in the liquid crystal cells. By adding a monomer and a photo-initiator into the liquid crystal material of a liquid crystal display, applying a bias voltage and exposing the display under a UV light, a polymer network can be formed. The polymer network modifies the electro-optical characteristic of a liquid crystal display device. With different bias voltages, polymer networks of different structures can be formed so that the color difference of the liquid crystal display with respect to red, green and blue light can be minimized. Liquid crystal display devices of fast switching response and low color dispersion can be fabricated.
    Type: Grant
    Filed: August 1, 1997
    Date of Patent: January 11, 2000
    Assignee: Industrial Technology Research Institute
    Inventors: Chen-Lung Kuo, Chung-Kuang Wei, Yong-Hong Lu