Patents by Inventor Chung-Kuang Tsai

Chung-Kuang Tsai 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: 8884859
    Abstract: A liquid crystal display (LCD) driving apparatus and the method thereof is disclosed. The method receives a pixel and drives a pixel of the LCD according to the pixel value in a frame period, wherein the frame period is divided into a precharge field and a compensation field. Firstly, a precharge pixel value is decided according to the pixel and a reference value. A compensation pixel value is decided according to the precharge pixel. Next, a precharge driving voltage is determined according to the precharge pixel value. Afterwards, a compensation driving voltage is determined according to the compensation pixel value. Finally, the pixel is driven according to the precharge driving voltage and the compensation driving voltage respectively during the precharge field and the compensation field.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: November 11, 2014
    Assignee: AU Optronics Corp.
    Inventors: Chung-Kuang Tsai, Li-Ru Lyu
  • Patent number: 8866712
    Abstract: A liquid crystal display (LCD) driving apparatus and the method thereof is disclosed. The method receives a pixel and drives a pixel of the LCD according to the pixel value in a frame period, wherein the frame period is divided into a precharge field and a compensation field. Firstly, a precharge pixel value is decided according to the pixel and a reference value. A compensation pixel value is decided according to the precharge pixel. Next, a precharge driving voltage is determined according to the precharge pixel value. Afterwards, a compensation driving voltage is determined according to the compensation pixel value. Finally, the pixel is driven according to the precharge driving voltage and the compensation driving voltage respectively during the precharge field and the compensation field.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: October 21, 2014
    Assignee: AU Optronics Corp.
    Inventors: Chung-Kuang Tsai, Li-Ru Lyu
  • Publication number: 20130249892
    Abstract: A liquid crystal display (LCD) driving apparatus and the method thereof is disclosed. The method receives a pixel and drives a pixel of the LCD according to the pixel value in a frame period, wherein the frame period is divided into a precharge field and a compensation field. Firstly, a precharge pixel value is decided according to the pixel and a reference value. A compensation pixel value is decided according to the precharge pixel. Next, a precharge driving voltage is determined according to the precharge pixel value. Afterwards, a compensation driving voltage is determined according to the compensation pixel value. Finally, the pixel is driven according to the precharge driving voltage and the compensation driving voltage respectively during the precharge field and the compensation field.
    Type: Application
    Filed: May 17, 2013
    Publication date: September 26, 2013
    Applicant: AU OPTRONICS CORP.
    Inventors: Chung-Kuang Tsai, Li-Ru Lyu
  • Patent number: 8232945
    Abstract: A gamma voltage generator can control brightness of a first color pixel unit and a second color pixel unit. A first potential divider is coupled between a first node and a second node for generating a first main gamma voltage. At least one second potential divider is coupled between the second node and a third node for generating a first sub-gamma voltage and a second sub-gamma voltage. The brightness of the first color pixel unit is controlled by the first main gamma voltage and the first sub-gamma voltage. The brightness of the second color pixel unit is controlled by the first main gamma voltage and the second sub-gamma voltage.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: July 31, 2012
    Assignee: AU Optronics Corp.
    Inventors: Hung-Min Shih, Chung-Kuang Tsai
  • Publication number: 20120139971
    Abstract: A gamma voltage generator can control brightness of a first color pixel unit and a second color pixel unit. A first potential divider is coupled between a first node and a second node for generating a first main gamma voltage. At least one second potential divider is coupled between the second node and a third node for generating a first sub-gamma voltage and a second sub-gamma voltage. The brightness of the first color pixel unit is controlled by the first main gamma voltage and the first sub-gamma voltage. The brightness of the second color pixel unit is controlled by the first main gamma voltage and the second sub-gamma voltage.
    Type: Application
    Filed: February 10, 2012
    Publication date: June 7, 2012
    Applicant: AU OPTRONICS CORP.
    Inventors: Hung-Min Shih, Chung-Kuang Tsai
  • Patent number: 8139010
    Abstract: A gamma voltage generator can control brightness of a first color pixel unit and a second color pixel unit. A first potential divider is coupled between a first node and a second node for generating a first main gamma voltage. At least one second potential divider is coupled between the second node and a third node for generating a first sub-gamma voltage and a second sub-gamma voltage. The brightness of the first color pixel unit is controlled by the first main gamma voltage and the first sub-gamma voltage. The brightness of the second color pixel unit is controlled by the first main gamma voltage and the second sub-gamma voltage.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: March 20, 2012
    Assignee: AU Optronics Corp.
    Inventors: Hung-Min Shih, Chung-Kuang Tsai
  • Publication number: 20110199347
    Abstract: A liquid crystal display (LCD) driving apparatus and the method thereof is disclosed. The method receives a pixel and drives a pixel of the LCD according to the pixel value in a frame period, wherein the frame period is divided into a precharge field and a compensation field. Firstly, a precharge pixel value is decided according to the pixel and a reference value. A compensation pixel value is decided according to the precharge pixel. Next, a precharge driving voltage is determined according to the precharge pixel value. Afterwards, a compensation driving voltage is determined according to the compensation pixel value. Finally, the pixel is driven according to the precharge driving voltage and the compensation driving voltage respectively during the precharge field and the compensation field.
    Type: Application
    Filed: April 19, 2011
    Publication date: August 18, 2011
    Applicant: AU OPTRONICS CORP.
    Inventors: Chung-Kuang Tsai, Li-Ru Lyu
  • Patent number: 7742030
    Abstract: A pixel of the LCD is driven according to a precharge pixel value and a compensation pixel value both being generated from a pixel value during a precharge field and a compensation field respectively. A precharge driving voltage corresponding to the precharge pixel value, and a compensation driving voltage corresponding to the compensation pixel value is then determined and used to drive the pixel. The lightness of the pixel driven according to the precharge pixel value and the compensation pixel value is substantially the same as the lightness of the pixel if driven according to the pixel value. The precharge field comes before the compensation field when the precharge pixel value is larger than the compensation pixel value, and the compensation field comes before the precharge field when the compensation pixel value is larger than the precharge pixel value.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: June 22, 2010
    Assignee: AU Optronics Corp.
    Inventors: Chung-Kuang Tsai, Li-Ru Lyu
  • Publication number: 20090244436
    Abstract: A backlight module of a flat panel display for lighting the flat panel display is described. The backlight module includes a rear bezel, a plurality of lamps, an optical film and a middle bezel. The rear bezel is composed of a bezel main body and sidewalls. The bezel main body includes a plurality of ribs to enhance the strength thereof and a plurality of studs to fix with a wall mounting bracket or a foot stand. The middle bezel fixes the optical film on the rear bezel. The backlight module may further include a plurality of supports integrated the rear bezel. A reflective film may also be integrated on the rear bezel to further reduce the quantity of separable components of the flat panel display.
    Type: Application
    Filed: June 8, 2009
    Publication date: October 1, 2009
    Inventors: Nan-Ching Lee, Chung-Kuang Tsai, Kuang-Ting Cheng
  • Publication number: 20090189886
    Abstract: A liquid crystal display (LCD) driving apparatus and the method thereof is disclosed. The method receives a pixel and drives a pixel of the LCD according to the pixel value in a frame period, wherein the frame period is divided into a precharge field and a compensation field. Firstly, a precharge pixel value is decided according to the pixel and a reference value. A compensation pixel value is decided according to the precharge pixel. Next, a precharge driving voltage is determined according to the precharge pixel value. Afterwards, a compensation driving voltage is determined according to the compensation pixel value. Finally, the pixel is driven according to the precharge driving voltage and the compensation driving voltage respectively during the precharge field and the compensation field.
    Type: Application
    Filed: March 31, 2009
    Publication date: July 30, 2009
    Applicant: AU OPTRONICS CORP.
    Inventors: Chung-Kuang Tsai, Li-Ru Lyu
  • Patent number: 7561224
    Abstract: A backlight module of a flat panel display for lighting the flat panel display is described. The backlight module includes a rear bezel, a plurality of lamps, an optical film and a middle bezel. The rear bezel is composed of a bezel main body and sidewalls. The bezel main body includes a plurality of ribs to enhance the strength thereof and a plurality of studs to fix with a wall mounting bracket or a foot stand. The middle bezel fixes the optical film on the rear bezel. The backlight module may further include a plurality of supports integrated the rear bezel. A reflective film may also be integrated on the rear bezel to further reduce the quantity of separable components of the flat panel display.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: July 14, 2009
    Assignee: AU Optronics Corporation
    Inventors: Nan-Ching Lee, Chung-Kuang Tsai, Kuang-Ting Cheng
  • Publication number: 20090154179
    Abstract: A back bezel for use in a back light module is disclosed. The back bezel comprises a body and a reinforced structure. The body includes a plastic portion and a plurality of openings arranged in the plastic portion. The body further includes a first side and a second side opposite the first side. The reinforced structure of the back bezel is formed on the plastic portion to increase the structural strength of the body.
    Type: Application
    Filed: June 18, 2008
    Publication date: June 18, 2009
    Applicant: AU Optronics Corp.
    Inventors: Nan-Ching Lee, Chung-Kuang Tsai
  • Patent number: 7548249
    Abstract: A method of dynamic frame presentation improvement for liquid crystal display is disclosed. The method comprises the step of providing a gray level mapping table, which maps the signal gray levels from 0 to N into mapped gray levels from 1 to N?1 level. Thereafter, the mapped data is fed into over-voltage compensation circuit. The over-voltage compensation circuit then implements process of the gray level ascending or gray level descending while the previous frame turns into current frame with a varied gray level.
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: June 16, 2009
    Assignee: Au Optronics Corp.
    Inventors: Chung-Kuang Tsai, Li-Ru Lyu, Hung-Min Shih, Yung-Zhi Wu, Ya-Fang Chen
  • Patent number: 7532186
    Abstract: A liquid crystal display (LCD) driving apparatus and the method thereof is disclosed. The method receives a pixel and drives a pixel of the LCD according to the pixel value During a frame period, wherein the frame period is divided into a precharge field and a compensation field. Firstly, a precharge pixel value is decided according to the pixel and a reference value. A compensation pixel value is decided according to the precharge pixel. Next, a precharge driving voltage is determined according to the precharge pixel value. Afterwards, a compensation driving voltage is determined according to the compensation pixel value. Finally, the pixel is driven according to the precharge driving voltage and the compensation driving voltage respectively during the precharge field and the compensation field.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: May 12, 2009
    Assignee: AU Optronics Corp.
    Inventors: Chung-Kuang Tsai, Li-Ru Lyu
  • Publication number: 20080211753
    Abstract: A liquid crystal display (LCD) driving apparatus and the method thereof is disclosed. The method receives a pixel and drives a pixel of the LCD according to the pixel value During a frame period, wherein the frame period is divided into a precharge field and a compensation field. Firstly, a precharge pixel value is decided according to the pixel and a reference value. A compensation pixel value is decided according to the precharge pixel. Next, a precharge driving voltage is determined according to the precharge pixel value. Afterwards, a compensation driving voltage is determined according to the compensation pixel value. Finally, the pixel is driven according to the precharge driving voltage and the compensation driving voltage respectively during the precharge field and the compensation field.
    Type: Application
    Filed: November 30, 2007
    Publication date: September 4, 2008
    Applicant: AU OPTRONICS CORP.
    Inventors: Chung-Kuang Tsai, Li-Ru Lyu
  • Publication number: 20070229552
    Abstract: A color compensation method for a display is disclosed. The display includes a display module for receiving a plurality of original pixel data. The method includes calculating power-on time duration of the display module; and adjusting gray levels of the original pixel data according to the power-on time duration.
    Type: Application
    Filed: May 30, 2007
    Publication date: October 4, 2007
    Applicant: AU OPTRONICS CORP.
    Inventors: Hung-Min Shih, Chung-Kuang Tsai, Kun-Hung Hsieh, Chih-Wei Chen, Chung-Lung Li
  • Patent number: 7262748
    Abstract: A driving method for a plasma display panel (PDP). The odd pixels units are selected by the odd fields, and are discharged. The even pixels units are selected by the even fields, and are discharged. The pixel units are disposed in a triangular arrangement, so that the odd pixel units and adjacent even pixel units, being different in color, are arranged alternately. Thereby, the present invention can eliminate flicker. In addition, the different pixel units are controlled by different common electrodes and the present invention thereby reduces cross-talk.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: August 28, 2007
    Assignee: Au Optronics Corp.
    Inventors: Ji-Bin Du, Chung-Kuang Tsai
  • Publication number: 20070164976
    Abstract: A backlight module of a display panel includes a first light source, a second light source, a first inverter, and a second inverter. The first light source is disposed on a first side of the display panel and includes a first light-emitting device and a second light-emitting device. The second light source is disposed on a second side of the display panel and includes a third light-emitting device and a fourth light-emitting device. The first inverter is coupled to the first and third light-emitting devices, and the second inverter is coupled to the second and fourth light-emitting devices.
    Type: Application
    Filed: March 7, 2006
    Publication date: July 19, 2007
    Inventors: Chung-Huwa Kuo, Chung-Kuang Tsai, Jian-Shen Li
  • Publication number: 20070147022
    Abstract: A backlight module of a flat panel display for lighting the flat panel display is described. The backlight module includes a rear bezel, a plurality of lamps, an optical film and a middle bezel. The rear bezel is composed of a bezel main body and sidewalls. The bezel main body includes a plurality of ribs to enhance the strength thereof and a plurality of studs to fix with a wall mounting bracket or a foot stand. The middle bezel fixes the optical film on the rear bezel. The backlight module may further include a plurality of supports integrated the rear bezel. A reflective film may also be integrated on the rear bezel to further reduce the quantity of separable components of the flat panel display.
    Type: Application
    Filed: June 28, 2006
    Publication date: June 28, 2007
    Inventors: Nan-Ching Lee, Chung-Kuang Tsai, Kuang-Ting Cheng
  • Publication number: 20070120788
    Abstract: A display device comprising a glass substrate, a display array, a backlight unit, at least one first driver, a second driver, a scalar, and a timing controller. The display array is disposed on the glass substrate and comprises a plurality of pixel units. The backlight unit provides light to the display array. The at least one first driver controls the pixel units. The second driver drives the backlight unit. The scalar processes an image input signal and outputs a digital image signal. The timing controller receives the digital image signal and provides at least one control signal to the at least one first driver. The memory device stores optics and image references of the display array. The memory device is coupled to the circuit board of the at least one first driver, the circuit board of the second driver, or the glass substrate.
    Type: Application
    Filed: March 8, 2006
    Publication date: May 31, 2007
    Inventors: Chung-Kuang Tsai, Wen-Kai Shih, Wu-Feng Liou