Patents by Inventor Hung Chen Kao

Hung Chen Kao 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: 20190325813
    Abstract: A display device includes a pixel array, multiple data lines and multiple gate lines. The pixel array includes multiple pixels. At least one of the pixels includes a first sub-pixel and a second sub-pixel. The first sub-pixel includes a pixel circuit, which includes a first light-emitting element and a first driving circuit. The first driving circuit is coupled to and configured to control the first light-emitting element. The first driving circuit includes multiple TFTs. The second sub-pixel includes a pixel circuit, which includes a second light-emitting element and a second driving circuit. The second driving circuit is coupled to and configured to control the second light-emitting element. The second driving circuit includes multiple TFTs. The number of TFTs of the first driving circuit and the number of TFTs of the second driving circuit are different.
    Type: Application
    Filed: March 18, 2019
    Publication date: October 24, 2019
    Inventors: Min-Hsin LO, Ker-Yih KAO, Cheng-Hsu CHOU, Kung-Chen KUO, Hung-Sheng LIAO
  • Publication number: 20190296719
    Abstract: A flip-flop circuit configured to latch an input signal to an output signal is disclosed. The circuit includes a first latch circuit; and a second latch circuit coupled to the first latch circuit. In some embodiments, in response to a clock signal, the first and second latch circuits are complementarily activated so as to latch the input signal to the output signal, and the first and second latch circuits each comprises at most two transistors configured to receive the clock signal.
    Type: Application
    Filed: June 11, 2019
    Publication date: September 26, 2019
    Inventors: Po-Chia LAI, Meng-Hung SHEN, Chi-Lin LIU, Stefan RUSU, Yan-Hao CHEN, Jerry Chang-Jui KAO
  • Patent number: 10326430
    Abstract: A flip-flop circuit configured to latch an input signal to an output signal is disclosed. The circuit includes a first latch circuit; and a second latch circuit coupled to the first latch circuit. In some embodiments, in response to a clock signal, the first and second latch circuits are complementarily activated so as to latch the input signal to the output signal, and the first and second latch circuits each comprises at most two transistors configured to receive the clock signal.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: June 18, 2019
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Po-Chia Lai, Meng-Hung Shen, Chi-Lin Liu, Stefan Rusu, Yan-Hao Chen, Jerry Chang-Jui Kao
  • Patent number: 9224544
    Abstract: A trace structure for a touch panel having a transparent substrate with a touch sensing region and a border region surrounding the touch sensing region, the trace structure including: a plurality of traces disposed on the transparent substrate and within the border region; a plurality of bonding pads disposed in the border region of the transparent substrate, wherein each bonding pad has a first side and a second side, and the first side of each bonding pad is connected to a corresponding trace of the plurality of traces; and at least two trace extending portions extended toward an outer edge of the border region from the second side of two of the plurality of bonding pads.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: December 29, 2015
    Assignee: HANNSTAR DISPLAY CORP
    Inventors: Hung-Chen Kao, Yu-Sheng Lin, Chia-Feng Teng
  • Patent number: 8941608
    Abstract: A liquid crystal display according to the present disclosure is provided. The liquid crystal display includes a frame, a backlight module, a plurality of hooking members, an LCD panel, and a touch sensor. According to the liquid crystal display of the present disclosure, wherein the hooking members on the frame may secure the touch sensor or the LCD panel on the backlight module without need of using double-sided tapes or optical adhesive.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: January 27, 2015
    Assignee: Hannstar Display Corp.
    Inventors: Ming Sheng Chiu, Wen Chi Lin, Hung Chen Kao, Chien Hsiang Tseng, Chia Feng Teng
  • Publication number: 20140015563
    Abstract: A trace structure for a touch panel having a transparent substrate with a touch sensing region and a border region surrounding the touch sensing region, the trace structure including: a plurality of traces disposed on the transparent substrate and within the border region; a plurality of bonding pads disposed in the border region of the transparent substrate, wherein each bonding pad has a first side and a second side, and the first side of each bonding pad is connected to a corresponding trace of the plurality of traces; and at least two trace extending portions extended toward an outer edge of the border region from the second side of two of the plurality of bonding pads.
    Type: Application
    Filed: June 26, 2013
    Publication date: January 16, 2014
    Inventors: Hung-Chen KAO, Yu-Sheng LIN, Chia-Feng TENG
  • Publication number: 20130057484
    Abstract: A liquid crystal display according to the present disclosure is provided. The liquid crystal display includes a frame, a backlight module, a plurality of hooking members, an LCD panel, and a touch sensor. According to the liquid crystal display of the present disclosure, wherein the hooking members on the frame may secure the touch sensor or the LCD panel on the backlight module without need of using double-sided tapes or optical adhesive.
    Type: Application
    Filed: June 8, 2012
    Publication date: March 7, 2013
    Applicant: HANNSTAR DISPLAY CORP.
    Inventors: Ming Sheng CHIU, Wen Chi LIN, Hung Chen KAO, Chien Hsiang TSENG, Chia Feng TENG
  • Patent number: 7559682
    Abstract: The present invention provides a backlight module used for a liquid crystal display. The backlight comprises a back plate having a first track set, a detachable light source set disposed on the back plate, and an optical films set combined with the back plate. The detachable light source set comprises a base, a light source disposed on a first side of the base, and a second track set disposed on a second side of the base. The second track set can connect to and slide on the first track set. Then the detachable light source set is removable, and the light source is easily to be replaced.
    Type: Grant
    Filed: March 4, 2005
    Date of Patent: July 14, 2009
    Assignee: Hannstar Display Corporation
    Inventors: Hung-Chen Kao, Ke-Chin Chang, Fu-Tung Chen, Yuh-Hsien Wang, Cheng-Chia Wu, Sheng-Hao Huang
  • Patent number: 7528900
    Abstract: A liquid crystal display module with backlight module providing an enhancement coefficient of the brightness enhancement film (BEF) within the range of 0.1 to 0.5. The backlight module is disposed behind the display panel and comprises a bottom diffuser, a brightness enhancement film, and a top diffuser disposed on the brightness enhancement film. A set of polarizers is disposed above and below the liquid crystal display panel. The backlight module meets TCO standards and has improved optical performance.
    Type: Grant
    Filed: April 7, 2006
    Date of Patent: May 5, 2009
    Assignee: Hannstar Display Corporation
    Inventors: Chih-Li Chang, Hung-Chen Kao, Wei-Chi Lin, Jia-Rung Juang
  • Patent number: 7518321
    Abstract: The invention is directed to a light module, which allows the individual lamp unit to be replaced with a new one and the luminance of the newly-replaced lamp unit can be automatically or manually adjusted to get a uniform luminance. Wherein, information of a first relation table of a lamp luminance versus a using time and a second relation table of the lamp luminance versus an operation current-power is used to determine the current power. In addition, a clocking unit is used to count a total using time for the light module. Then, a desired lamp luminance according to the first relation table can be determined, and then the current power is determined according to the second relation table.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: April 14, 2009
    Assignee: Hannstar Display Corporation
    Inventors: Ke-Chin Chang, Hung-Chen Kao, Hsin-Chieh Lai
  • Patent number: 7486354
    Abstract: A cut filter is used in a backlight module or a display device and positioned over the light source to filter off a part of the light comprising an overlap of at least two of the red light, the green light, and the blue light. By filtering off the overlapping part of light emitted from the light source to obtain a purer primary color light, the display device equipped with a conventional color filter can attain an improved color gamut.
    Type: Grant
    Filed: January 26, 2006
    Date of Patent: February 3, 2009
    Assignee: HannStar Display Corp.
    Inventors: Chih-Li Chang, Chi-Jen Huang, Hung-Chen Kao, Ching-Cherng Sun, Cheng-Chung Lee
  • Publication number: 20080136997
    Abstract: A liquid crystal display device has an upper prism sheet and a lower polarizer disposed on the upper prism sheet. The upper prism sheet has a plurality of first parallel ridgelines arranged in a first direction and a light-condensing direction. The first direction of the first parallel ridgelines is substantially perpendicular to the light-condensing direction. The lower polarizer has a first transmissive axis substantially parallel to the light-condensing direction.
    Type: Application
    Filed: December 6, 2006
    Publication date: June 12, 2008
    Inventors: Chih-Li Chang, Cheng-Chia Wu, Hung-Chen Kao
  • Publication number: 20080088261
    Abstract: The invention is directed to a light module, which allows the individual lamp unit to be replaced with a new one and the luminance of the newly-replaced lamp unit can be automatically or manually adjusted to get a uniform luminance. Wherein, information of a first relation table of a lamp luminance versus a using time and a second relation table of the lamp luminance versus an operation current-power is used to determine the current power. In addition, a clocking unit is used to count a total using time for the light module. Then, a desired lamp luminance according to the first relation table can be determined, and then the current power is determined according to the second relation table.
    Type: Application
    Filed: December 12, 2007
    Publication date: April 17, 2008
    Applicant: HANNSTAR DISPLAY CORPORATION
    Inventors: Ke-Chin Chang, Hung-Chen Kao, Hsin-Chieh Lai
  • Patent number: 7350955
    Abstract: A back light source module of a liquid crystal device is provided. The back light source module includes a backplate, a light source fixture disposed on the backplate. The back light source module also includes a first light source having a first normal line and disposing on the light source fixture, a second light source having a second normal line and disposing on the light source fixture, and a third light source having a third normal line and disposing on the light source fixture. Among them, a first angle is formed between the second normal line and the first normal line, a second angle is formed between the third normal line and the first normal line, and both the first angle and the second angle are less than 90 degrees.
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: April 1, 2008
    Assignee: Hannstar Display Corporation
    Inventors: Chih-Li Chang, Hung-Chen Kao
  • Patent number: 7327097
    Abstract: The invention is directed to a light module, which allows the individual lamp unit to be replaced with a new one and the luminance of the newly-replaced lamp unit can be automatically or manually adjusted to get a uniform luminance. Wherein, information of a first relation table of a lamp luminance versus a using time and a second relation table of the lamp luminance versus an operation current-power is used to determine the current power. In addition, a clocking unit is used to count a total using time for the light module. Then, a desired lamp luminance according to the first relation table can be determined, and then the current power is determined according to the second relation table.
    Type: Grant
    Filed: March 21, 2005
    Date of Patent: February 5, 2008
    Assignee: Hannstar Display Corporation
    Inventors: Ke-Chin Chang, Hung-Chen Kao, Hsin-Chieh Lai
  • Publication number: 20070236634
    Abstract: A liquid crystal display module with backlight module providing an enhancement coefficient of the brightness enhancement film (BEF) within the range of 0.1 to 0.5. The backlight module is disposed behind the display panel and comprises a bottom diffuser, a brightness enhancement film, and a top diffuser disposed on the brightness enhancement film. A set of polarizers is disposed above and below the liquid crystal display panel. The backlight module meets TCO standards and has improved optical performance.
    Type: Application
    Filed: April 7, 2006
    Publication date: October 11, 2007
    Inventors: Chih-Li Chang, Hung-Chen Kao, Wei-Chi Lin, Jia-Rung Juang
  • Publication number: 20070171186
    Abstract: A cut filter is used in a backlight module or a display device and positioned over the light source to filter off a part of the light comprising an overlap of at least two of the red light, the green light, and the blue light. By filtering off the overlapping part of light emitted from the light source to obtain a purer primary color light, the display device equipped with a conventional color filter can attain an improved color gamut.
    Type: Application
    Filed: January 26, 2006
    Publication date: July 26, 2007
    Inventors: Chih-Li Chang, Chi-Jen Huang, Hung-Chen Kao, Ching-Cherng Sun, Cheng-Chung Lee
  • Publication number: 20070103853
    Abstract: Here provided is a structure for assembling a flat panel display in a notebook. A rear cover has a cross section of a wedge shape conformable to an LCD module so as to avoid using a conventional rectangular plastic mold frame by replacing it with the rear cover. Additionally, a conventional bezel is replaced with a front frame of the notebook. With such replacement, a structure and processes for assembling the flat panel display in the notebook can be significantly simplified without scarifying the advantage of the high compactness of the notebook computer to decrease a fabricating cost and the weight of the flat display.
    Type: Application
    Filed: November 9, 2005
    Publication date: May 10, 2007
    Inventor: Hung-Chen Kao
  • Patent number: 7172329
    Abstract: The present invention provides a back light module, having an optical element, a light source and an outer supporting means. The optical element includes main body and protrusions which protrude from an edge of the main body. Contiguous protrusions with the main body form a positioning groove. The conjunction region between protrusion and main body is a fillet. The outer supporting means fixes the optical elements and the light source, which has at least one positioning component disposed on the edge of the back plate. The positioning component includes one inner wall near to edge of the main body, a side wall near to the protrusion and a transition wall connecting the side wall and the inner wall. A separate distance g between the fillet and the side wall so that the optical element can be prevented from cracking during the impact or shock test of the back light module.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: February 6, 2007
    Assignee: Hannstar Display Corporation
    Inventors: Hung-Chen Kao, Hsin-Chieh Lai
  • Publication number: 20060285311
    Abstract: A light-emitting device comprises at least one light source to emit a light and a transparent cap positioned over the light source. The transparent cap has a tapered interior for receiving and refracting the light from the light source and an exterior for refracting the light. The distance of light mixing is shortened conveniently using the light-emitting device.
    Type: Application
    Filed: June 19, 2005
    Publication date: December 21, 2006
    Inventors: Chih-Li Chang, Chi-Jen Huang, Hung-Chen Kao