Patents by Inventor Tai-Jiun Hwang

Tai-Jiun Hwang 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: 20180158401
    Abstract: Provided is a driving system for a display device and a driving circuit applicable to an OLED, which belong to the field of display technology, and can eliminate the phenomenon of shortening in lifetime of the OLED caused by a long-term DC bias light-emitting state of the OLED.
    Type: Application
    Filed: October 10, 2015
    Publication date: June 7, 2018
    Applicant: Shenzhen China Star Optoelectronics Technology Co. Ltd.
    Inventors: Zhenling WANG, Tai Jiun HWANG
  • Patent number: 9947260
    Abstract: A demultiplexer and an AMOLED display device are disclosed. The present disclosure relates to the technical field of display, whereby the technical problem of color distortion of image in the prior art can be solved. The demultiplexer comprises a first switch, a second switch, and a third switch used for charging a first sub pixel, a second sub pixel, and a third sub pixel of a pixel unit respectively, wherein the first switch, the second switch, and the third switch are turned on in rotation; and wherein for the pixel unit, in three frame images, the first switch is turned on first in one of said three frame images, the second switch is turned on first in another one of said three frame images, and the third switch is turned on first in a remaining one of said three frame images. The demultiplexer of the present disclosure can be used in small sized AMOLED display device.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: April 17, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Tai Jiun Hwang, Jih Shiang Lee, Zhenling Wang
  • Publication number: 20180090100
    Abstract: The present disclosure provides a method for displaying image and apparatus thereof, the method includes: When a first image in power saving mode needs to be switched to a second image, determining a difference of average picture level between the first image and the second image; according to a relationship between a preset difference of average picture level and a first time, determining the first time, and the first time is a time restoring a first brightness to a second brightness needed, the first brightness is a brightness of the first image in power saving mode, and the second brightness is a normal brightness of the second image; switching from the first image to the second image, and the brightness of the second image is gradually restored in the first time to the normal brightness. In this way, the human eye cannot bring discomfort and enhance the panel viewing comfort.
    Type: Application
    Filed: March 4, 2016
    Publication date: March 29, 2018
    Applicant: Shenzhen China Star Optoelectronics Technology Co. , Ltd.
    Inventors: Jing XU, Tai-Jiun HWANG
  • Publication number: 20180082660
    Abstract: A method of reducing the power consumption of the display panels includes: obtaining a brightness of each of pixels of an image to be displayed on the display panel; calculating an average brightness of the image in accordance with the brightness of each of the pixels of the image; obtaining a brightness adjustment coefficient in accordance with the average brightness; decreasing the brightness of each of the pixels of the image in accordance with the brightness adjustment coefficient; and enhancing a contrastness between the pixels of the image in accordance with the brightness adjustment coefficient. In addition, a system of reducing the power consumption of the display panels is also disclosed. In this way, the power consumption of the display panel may be reduced, and the contrastness of the displayed image may be enhanced.
    Type: Application
    Filed: March 16, 2016
    Publication date: March 22, 2018
    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Jing XU, Tai-jiun HWANG
  • Patent number: 9898966
    Abstract: A method for driving a display device includes: dividing static frames displayed by the display device into a first frame and a second frame, which comprises a first sub-frame and a second sub-frame; outputting grey-scale images during the display period of the first frame and the first sub-frame; outputting dark state images during the display period of the second sub-frame, where the length of the display period of the second sub-frame is proportional to that of the static frames. The present invention also proposes a display device using the method. The brightness of the display device can be dynamically adjusted, preventing the device from operating in high brightness for a long period of time, and prolonging its lifespan.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: February 20, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Jing Xu, Tai-jiun Hwang
  • Patent number: 9858839
    Abstract: The disclosure is related to a naked eye three-dimensional display panel and an overdriving method. The overdriving method comprises: obtaining target voltages and overdriving voltages of driving electrodes; searching overdriving periods corresponding to the target voltages and the driving voltages in a preset look-up table, wherein mapping relations for different values of the target voltages, the overdriving voltages and the overdriving periods are stored in the preset look-up table; generating overdriving signals according to the obtained target voltages, the obtained driving voltages and the searched overdriving periods; and driving the liquid crystal prism. The disclosure can avoid the issues of insufficient overdriving and excessive overdriving and the naked eye three-dimensional displaying effect using the overdriving technology can be assured.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: January 2, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Limin Wang, Tai-jiun Hwang
  • Patent number: 9830874
    Abstract: The present invention provides an electronic device (100) having smaller number of drive chips and including a timing controller (10), a gate and a source drive chips (20, 30), a pixel cells matrix (60) and a multiplexer (40). The multiplexer (40) includes a plurality of first signal outputs connected to the pixel cells matrix (60). The timing controller (10) might generate enable signals for the multiplexer (40). In this way, the multiplexer (40) could output scan signals to the pixel cells matrix by a corresponding signal end. The number of the drive chips could be reduced by the present invention.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: November 28, 2017
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD
    Inventors: Ping-Sheng Kuo, Tai-Jiun Hwang
  • Patent number: 9806134
    Abstract: The present invention discloses a display apparatus, comprising: a control unit, employed for setting an image display period and a touch sense period and generating image display data, a first control signal and a second control signal; a display panel, employed for displaying images and generating a touch sense signal. The present invention also discloses a method of image display and touch sense of a display apparatus. The present invention integrates the image display function and the touch sense function without stacking the touch panel and promotes the display quality.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: October 31, 2017
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Tai Jiun Hwang
  • Patent number: 9734749
    Abstract: The present invention provides an image display method, comprising: acquiring test gray scale data for pixel data of test image data, and acquiring the gray scale compensation table according to the test gray scale data and the preset gray scale data; converting the original image data into processed image data; implementing gray scale data compensation to pixel data in the processed image data according to a gray scale compensation table; implementing display operation with the processed image data after the gray scale data compensation.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: August 15, 2017
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Tai-Jiun Hwang, Pengfei Liang
  • Publication number: 20170193903
    Abstract: A method for driving a display device includes: dividing static frames displayed by the display device into a first frame and a second frame, which comprises a first sub-frame and a second sub-frame; outputting grey-scale images during the display period of the first frame and the first sub-frame; outputting dark state images during the display period of the second sub-frame, where the length of the display period of the second sub-frame is proportional to that of the static frames. The present invention also proposes a display device using the method. The brightness of the display device can be dynamically adjusted, preventing the device from operating in high brightness for a long period of time, and prolonging its lifespan.
    Type: Application
    Filed: November 2, 2015
    Publication date: July 6, 2017
    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Jing XU, Tai-jiun HWANG
  • Publication number: 20170186392
    Abstract: The present invention provides an electronic device (100) having smaller number of drive chips and including a timing controller (10), a gate and a source drive chips (20, 30), a pixel cells matrix (60) and a multiplexer (40). The multiplexer (40) includes a plurality of first signal outputs connected to the pixel cells matrix (60). The timing controller (10) might generate enable signals for the multiplexer (40). In this way, the multiplexer (40) could output scan signals to the pixel cells matrix by a corresponding signal end. The number of the drive chips could be reduced by the present invention.
    Type: Application
    Filed: June 27, 2014
    Publication date: June 29, 2017
    Inventors: Ping-Sheng KUO, Tai-Jiun HWANG
  • Patent number: 9691322
    Abstract: An OLED display device includes a display screen, a sensor, and a timing controller. The timing controller includes a detection unit, a test image generation unit, a data compensation unit, and image control unit. The detection unit provides a command for generating a test image. The test image generation unit generates a test image according to the command. The data compensation unit receives a decayed signal that corresponds to the test image and is detected by the sensor in order to generate a compensation signal according to the decayed signal. In response to the compensation signal, the image control unit compensates an external image to achieve normal displaying of the external image on the display screen.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: June 27, 2017
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Tai-jiun Hwang
  • Publication number: 20170154562
    Abstract: A demultiplexer and an AMOLED display device are disclosed. The present disclosure relates to the technical field of display, whereby the technical problem of color distortion of image in the prior art can be solved. The demultiplexer comprises a first switch, a second switch, and a third switch used for charging a first sub pixel, a second sub pixel, and a third sub pixel of a pixel unit respectively, wherein the first switch, the second switch, and the third switch are turned on in rotation; and wherein for the pixel unit, in three frame images, the first switch is turned on first in one of said three frame images, the second switch is turned on first in another one of said three frame images, and the third switch is turned on first in a remaining one of said three frame images. The demultiplexer of the present disclosure can be used in small sized AMOLED display device.
    Type: Application
    Filed: July 2, 2015
    Publication date: June 1, 2017
    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Tai Jiun Hwang, Jih Shiang Lee, Zhenling Wang
  • Publication number: 20170140716
    Abstract: The present invention discloses a display panel and the driving method thereof. It divides the pixel electrodes of the display panel into multiple groups according to the light color allowed passing through. That is, each said pixel electrode allows the light with the same color to pass through; during one frame display, the data driver applies independent Gamma voltage to each said pixel electrode. After the gate driver drives the gate line connected with a group of the pixel electrodes, it drives the gate line connected with next group of the pixel electrodes in sequence, so that it can independently adjust the Gamma voltage applied to the pixels with different colors.
    Type: Application
    Filed: July 10, 2015
    Publication date: May 18, 2017
    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Jing XU, Tai-jiun HWANG
  • Publication number: 20170132978
    Abstract: A display device includes a format converter and a display panel. The format converter is for obtaining an original data frame, and performing a format conversion for the original data frame in order to obtain multiple converted data frames having different formats. The display panel is for that when obtaining each converted data frame which is converted through the format converter, one portion of pixel units of the display panel emits light, and the other portion of the pixel units of the display panel does not emit light. A driving method for a display device is also disclosed. The present invention can reduce the light emitting time of the pixel units of the display panel, and effectively decrease the aging speed of the display panel.
    Type: Application
    Filed: June 5, 2015
    Publication date: May 11, 2017
    Inventors: Jianhang FU, Tai-jiun HWANG
  • Patent number: 9626888
    Abstract: A method and an apparatus for testing a display panel are provided. The apparatus comprises an interface circuit for connecting to the display panel to be tested, and a test circuit for generating a test signal to the display panel through the interface circuit in a test state for a display panel, and for generating an adjustment signal to the display panel through the interface circuit in a predetermined state for the display panel, wherein at least a portion of an afterimage signal in the display panel is reduced by the adjustment signal.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: April 18, 2017
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD
    Inventors: Zhenling Wang, Tai-Jiun Hwang
  • Patent number: 9621164
    Abstract: A driving circuit is proposed. The driving circuit includes a scanning driving circuit and at least one group of combinational logic circuits. A first group of scanning signals output by an output terminal of the scanning driving circuit. An input terminal of the at least one group of combinational logic circuits is connected to the output terminal of the scanning driving circuit or is connected to an output terminal of a preceding group of combinational logic circuits. At least one second group of scanning signals output by the output terminal of the at least one group of combinational logic circuits for the driving circuit to output more groups of scanning signals. Accordingly, it is not necessary to use multiple groups of independent driving circuits. Besides, the combination of the scanning driving circuit and the groups of combinational logic circuits reduce cost.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: April 11, 2017
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Yuchao Zeng, Tai-jiun Hwang
  • Patent number: 9524136
    Abstract: An image compensation method is disclosed. The method comprising: detecting a realistic display mode of a display; generating an image compensation data based on the realistic display mode of the display and a preset compensation data; using the image compensation data to execute an image compensation operation to a display image signal; using the realistic display mode of a display to execute a display operation to the display image signal after the image compensation operation. The present invention is able to execute the image compensation operation to the display images of all display modes of the display.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: December 20, 2016
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Tai-Jiun Hwang, Pengfei Liang
  • Publication number: 20160365036
    Abstract: A display device and a brightness adjusting method thereof are provided. The brightness adjusting method includes: detecting a real-time current value of a display panel at working; generating a corresponding control signal according to the magnitude of the real-time current value; determining a real-time voltage of a corresponding level according to the control signal and outputting the real-time voltage of the corresponding level to drive the display panel to work. The invention can, based on real-time situation of the display panel in use, detect the real-time current and change the real-time voltage for driving the display panel according to the feedback of the real-time current, and therefore can ensure the provision of required real-time voltage for working, avoid the problems of reduced current and decreased brightness at fixed voltage when aging and meanwhile can achieve better energy saving effect when non-aging.
    Type: Application
    Filed: November 21, 2014
    Publication date: December 15, 2016
    Applicant: Shenzhen China Star Optoelectrics Technology Co., Ltd.
    Inventors: Jing XU, Tai-jiun HWANG
  • Patent number: 9520080
    Abstract: An OLED display device includes a display screen, a sensor, and a timing controller. The timing controller includes a detection unit, a test image generation unit, a data compensation unit, and image control unit. The detection unit provides a command for generating a test image. The test image generation unit generates a test image according to the command. The data compensation unit receives a decayed signal that corresponds to the test image and is detected by the sensor in order to generate a compensation signal according to the decayed signal. In response to the compensation signal, the image control unit compensates an external image to achieve normal displaying of the external image on the display screen.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: December 13, 2016
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Tai-jiun Hwang