Patents by Inventor Mu Shan Liao
Mu Shan Liao 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).
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Patent number: 8766951Abstract: An optical touch module and an optical touch display panel are provided. The optical touch module includes a first photo sensor, a second photo sensor, and a signal processing unit. The first photo sensor is disposed in one of the plurality of pixels of a pixel array. A first terminal and a control terminal of the first photo sensor are coupled to a first scan line. The second photo sensor has a first terminal coupled to a second terminal of the first photo sensor and outputting a sensing voltage, a control terminal coupled to the first terminal of the second photo sensor, and a second terminal receiving a first voltage. The signal processing unit is coupled to the first terminal of the second photo sensor, so as to convert the sensing voltage to a touch signal.Type: GrantFiled: October 8, 2010Date of Patent: July 1, 2014Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Tung-Hsin Lan, Mu-Shan Liao, Tien-Yung Huang, Feng-Shu Chang
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Patent number: 8629826Abstract: The present invention discloses a method for driving thin film transistor liquid crystal display (TFT-LCD) and the storage medium for storing computer program representative of the method thereof. The method utilizes a timing controller to send polarity control signals to a plurality of source drivers in a TFT-LCD panel for changing the polarity distribution of the liquid crystal molecules in the panel. The method is characterized by dynamically changing the positions of polarity inversion for alleviating the problem of undercharging under high resolution and high frequency conditions; utilizing both polar and reverse polar driving signals for solving the problem of color shift in “checker board” checking signals; and providing a mechanism for mending the problem of undercharging of the first horizontal line.Type: GrantFiled: April 8, 2010Date of Patent: January 14, 2014Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Mu-Shan Liao, Yuan-Jing Chang, Hung-Chun Li
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Patent number: 8344979Abstract: A method and an apparatus for over-driving a liquid crystal display (LCD) are provided, which are suitable for compensating a gray level brightness of the LCD. The method includes the following steps. Firstly, a data buffer unit outputs a current frame data. Then, the current frame data is stored into a frame memory unit, and the frame memory unit outputs a previous frame data. Next, several look-up tables (LUTs) are searched for a driving voltage in a corresponding LUT according to the current frame data and the previous frame data. Afterward, a position scanning unit receives the current frame data to determine a current position. Finally, a multiplexer outputs the corresponding driving voltage at the current position. Thus, a display panel has the same gray level brightness in upper, middle, and lower portions thereof, thereby avoiding ghosting.Type: GrantFiled: December 15, 2009Date of Patent: January 1, 2013Assignee: Chunghwa Picture Tubes., Ltd.Inventors: Mu-Shan Liao, Tung-Hsin Lan, Hung-Chun Li
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Patent number: 8339346Abstract: A display panel driving voltage supply apparatus and method is disclosed. Said supply apparatus comprises: a timing controller for providing a voltage control signal and a switch control signal; a level shifter, receiving the voltage control signal for selecting a first specified voltage to be transmitted on a first driving voltage supply line as well as selecting a second specified voltage to be transmitted on a second driving voltage supply line according to the voltage control signal; and a first switch, wherein the first and the second driving voltage supply lines are electrically connected with each other to charge share between the first and the second specified voltages when the first switch is turned on under the control of the switch control signal. Said supply apparatus is capable of solving the problem of high power consumption and thereby reducing the electricity consumption.Type: GrantFiled: November 23, 2010Date of Patent: December 25, 2012Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Hung-chun Li, Mu-shan Liao, Tung-hsin Lan
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Patent number: 8243219Abstract: Each pixel of an LCD display includes a main pixel, a sub-pixel, a resistor, and a third switch. The third switch is used for controlling the charging time of the main pixel and the sub-pixel. A data signal of a main pixel of a previous pixel is utilized to pre-charge the main pixel and the sub-pixel, and then data is transmitted to the sub-pixel and the main pixel. When data transmission to the sub-pixel is ended, the data transmission path to the sub-pixel is switched off, and the data keeps being transmitted only to the main pixel. The LCD panel utilizing this method only needs to add one gate line at each of the top and bottom of the panel to realize the AMVA structure of 8-domain for the LCD panel.Type: GrantFiled: August 18, 2009Date of Patent: August 14, 2012Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Tung-Hsin Lan, Mu-Shan Liao, Tien-Yung Huang, Chia-Chun Fang
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Patent number: 8217969Abstract: A display device and a display controlling module are provided. The display controlling module includes a data analyzing unit, an interference data storage unit and a data adjustment unit. The data analyzing unit receives a plurality of display data of a corresponding frame, analyzes the display data to obtain a plurality of grayscale distributions of the corresponding display regions of a display panel and generates a backlight signal for adjusting a brightness of each of a plurality of light emitting groups of a backlight module according to the grayscale distributions. The interference data storage unit outputs a plurality of interferences of the corresponding display data according to the backlight controlling signal. The data adjustment unit receives the display data and the interferences and correspondingly adjusts grayscales of the display data according to the interferences.Type: GrantFiled: November 16, 2010Date of Patent: July 10, 2012Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Hung-Chun Li, Mu-Shan Liao, Tung-Hsin Lan
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Patent number: 8217873Abstract: A liquid crystal display device for improving color washout problem is disclosed in the present invention, in which storage capacitors of two sub-pixels of a pixel are electrically connected to a next scan line and a next scan line of the next scan line, respectively, in order for utilizing driving signals of the two scan lines to modulate voltages of the storage capacitors, so as to make the two sub-pixels have different driving voltages.Type: GrantFiled: March 3, 2009Date of Patent: July 10, 2012Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Tung-Hsin Lan, Mu-Shan Liao, Hung-Chun Li, Ming-Chang Lin
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Patent number: 8217886Abstract: An LCD device includes a plurality of first data lines, a plurality of second data lines, a plurality of display units, a source driver and a gate driver. Each of the second data lines is disposed between two corresponding first data lines, while each display unit is coupled to a corresponding first data line and a corresponding gate line or to a corresponding second data line and a corresponding gate line. The source driver is coupled to the plurality of first data lines and the plurality of second data lines for providing a plurality of data signals. Each of the data signals is outputted to a corresponding first data line during a first period in a write period, and outputted to a corresponding second data line during a second period in the write period.Type: GrantFiled: March 29, 2009Date of Patent: July 10, 2012Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Tung-Hsin Lan, Mu-Shan Liao, Tien-Yung Huang, Chia-Chun Fang
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Patent number: 8212846Abstract: A display controlling method is provided. The display controlling method includes following steps. A plurality of display data of a frame is received. The display data is analyzed to obtain a plurality of grayscale distributions corresponding to the display regions. According to the grayscale distributions, a backlight controlling signal for adjusting a brightness of each of the light emitting groups is generated. According to the backlight controlling signal, a plurality of interferences corresponding to the display data is obtained. According to the interferences, grayscales of the display data are correspondingly adjusted. Therefore, the optical interference of each of the pixels from the light emitting groups not corresponding to the pixels can be eliminated.Type: GrantFiled: November 5, 2010Date of Patent: July 3, 2012Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Hung-Chun Li, Mu-Shan Liao, Tung-Hsin Lan
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Publication number: 20120092320Abstract: A liquid crystal display driving device for improving power on delay includes a gate driving circuit, a source driving circuit, and a timing control circuit. The timing control circuit is coupled to the gate driving circuit for transmitting a low-frequency frame rate lower than a normal frame rate of the liquid crystal display to operate the gate driving circuit for a predetermined number of clock cycles when a liquid crystal display powers on. Then, adjust the low-frequency frame rate to the normal frame rate of the liquid crystal display according to a trigger signal of the timing control circuit. And operate the liquid crystal display according to the normal frame rate.Type: ApplicationFiled: February 9, 2011Publication date: April 19, 2012Inventors: Hung-Chun Li, Mu-Shan Liao, Tung-Hsin Lan
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Publication number: 20120081038Abstract: A display panel driving voltage supply apparatus and method is disclosed. Said supply apparatus comprises: a timing controller for providing a voltage control signal and a switch control signal; a level shifter, receiving the voltage control signal for selecting a first specified voltage to be transmitted on a first driving voltage supply line as well as selecting a second specified voltage to be transmitted on a second driving voltage supply line according to the voltage control signal; and a first switch, wherein the first and the second driving voltage supply lines are electrically connected with each other to charge share between the first and the second specified voltages when the first switch is turned on under the control of the switch control signal. Said supply apparatus is capable of solving the problem of high power consumption and thereby reducing the electricity consumption.Type: ApplicationFiled: November 23, 2010Publication date: April 5, 2012Applicant: CHUNGHWA PICTURE TUBES, LTD.,Inventors: Hung-chun Li, Mu-shan Liao, Tung-hsin Lan
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Publication number: 20120068994Abstract: A display device including a timing controller and a display panel is provided. The timing controller provides a clock signal and an inverted signal of the clock signal. The display panel includes a substrate, a pixel array and a plurality of shift registers. The pixel array is disposed on the substrate. The shift registers are disposed on the substrate and respectively coupled to the timing controller. The shift registers sequentially output a plurality of scanning signals to drive the pixel array according to the clock signal and the inverted signal. In a display period of a frame period, frequencies of the clock signal and the inverted signal are a first frequency. In a vertical blanking period of the frame period, frequencies of the clock signal and the inverted signal are a second frequency. The second frequency is smaller than the first frequency.Type: ApplicationFiled: November 5, 2010Publication date: March 22, 2012Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Hung-Chun Li, Mu-Shan Liao, Tung-Hsin Lan
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Publication number: 20120044207Abstract: An optical touch module and an optical touch display panel are provided. The optical touch module includes a first photo sensor, a second photo sensor, and a signal processing unit. The first photo sensor is disposed in one of the plurality of pixels of a pixel array. A first terminal and a control terminal of the first photo sensor are coupled to a first scan line. The second photo sensor has a first terminal coupled to a second terminal of the first photo sensor and outputting a sensing voltage, a control terminal coupled to the first terminal of the second photo sensor, and a second terminal receiving a first voltage. The signal processing unit is coupled to the first terminal of the second photo sensor, so as to convert the sensing voltage to a touch signal.Type: ApplicationFiled: October 8, 2010Publication date: February 23, 2012Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Tung-Hsin Lan, Mu-Shan Liao, Tien-Yung Huang, Feng-Shu Chang
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Publication number: 20120032989Abstract: A display controlling method is provided. The display controlling method includes following steps. A plurality of display data of a frame is received. The display data is analyzed to obtain a plurality of grayscale distributions corresponding to the display regions. According to the grayscale distributions, a backlight controlling signal for adjusting a brightness of each of the light emitting groups is generated. According to the backlight controlling signal, a plurality of interferences corresponding to the display data is obtained. According to the interferences, grayscales of the display data are correspondingly adjusted. Therefore, the optical interference of each of the pixels from the light emitting groups not corresponding to the pixels can be eliminated.Type: ApplicationFiled: November 5, 2010Publication date: February 9, 2012Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Hung-Chun Li, Mu-Shan Liao, Tung-Hsin Lan
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Publication number: 20120032990Abstract: A display device and a display controlling module are provided. The display controlling module includes a data analyzing unit, an interference data storage unit and a data adjustment unit. The data analyzing unit receives a plurality of display data of a corresponding frame, analyzes the display data to obtain a plurality of grayscale distributions of the corresponding display regions of a display panel and generates a backlight signal for adjusting a brightness of each of a plurality of light emitting groups of a backlight module according to the grayscale distributions. The interference data storage unit outputs a plurality of interferences of the corresponding display data according to the backlight controlling signal. The data adjustment unit receives the display data and the interferences and correspondingly adjusts grayscales of the display data according to the interferences.Type: ApplicationFiled: November 16, 2010Publication date: February 9, 2012Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Hung-Chun Li, Mu-Shan Liao, Tung-Hsin Lan
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Publication number: 20110216174Abstract: A stereoscopic image displaying method generates a first and second right-eye multiplexed frame data by respectively performing frequency-multiplexing on a first and second right-eye frame data among a plurality of right-eye frame data, and generates a first and a second left-eye multiplexed frame data by respectively performing frequency-multiplexing on a first and a second left-eye frame data among a plurality of left-eye frame data. The first multiplexed right-eye frame data is outputted for two consecutive times during a first frame period. The first multiplexed left-eye frame data is outputted for two consecutive times during a second frame period subsequent to the first frame period. The second multiplexed right-eye frame data is outputted for two consecutive times during a third frame period subsequent to the second frame period. The second multiplexed left-eye frame data is outputted for two consecutive times during a fourth frame period subsequent to the third frame period.Type: ApplicationFiled: May 2, 2010Publication date: September 8, 2011Inventors: Mu-Shan Liao, Tung-Hsin Lan, Hung-Chun Li
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Publication number: 20110187705Abstract: A stereoscopic image displaying method provides a data driving signal related to a right-eye image and a left-eye image. During a plurality of frame periods, the data driving signal switches polarities every m frame periods, wherein m is an integer larger than 1. The right-eye image is outputted during the odd-numbered frame periods among the plurality of frame periods, while the left-eye image is outputted during the even-numbered frame periods among the plurality of frame periods.Type: ApplicationFiled: April 21, 2010Publication date: August 4, 2011Inventors: Tung-Hsin Lan, Mu-Shan Liao, Chun-Chieh Chiu, Tien-Yung Huang
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Patent number: 7932891Abstract: A multiple scan method for driving a display and a display therewith is provided. The multiple scan method is achieved by alternately driving the active pixels in the display twice or more times for expediting response time of these active pixels to reach the target luminance in the display. The pixels in the display are charged or discharged twice or more times within one frame period. By such design, the response time is shortened and quality for showing motion pictures is significantly improved.Type: GrantFiled: September 13, 2005Date of Patent: April 26, 2011Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Ming-Wei Huang, Wen-Tse Tseng, Mu-Shan Liao, Juin-Ying Huang
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Publication number: 20110063332Abstract: A method and an apparatus for over-driving a liquid crystal display (LCD) are provided, which are suitable for compensating a gray level brightness of the LCD. The method includes the following steps. Firstly, a data buffer unit outputs a current frame data. Then, the current frame data is stored into a frame memory unit, and the frame memory unit outputs a previous frame data. Next, several look-up tables (LUTs) are searched for a driving voltage in a corresponding LUT according to the current frame data and the previous frame data. Afterward, a position scanning unit receives the current frame data to determine a current position. Finally, a multiplexer outputs the corresponding driving voltage at the current position. Thus, a display panel has the same gray level brightness in upper, middle, and lower portions thereof, thereby avoiding ghosting.Type: ApplicationFiled: December 15, 2009Publication date: March 17, 2011Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Mu-Shan Liao, Tung-Hsin Lan, Hung-Chun Li
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Publication number: 20110025664Abstract: The present invention discloses a method for driving thin film transistor liquid crystal display (TFT-LCD) and the storage medium for storing computer program representative of the method thereof. The method utilizes a timing controller to send polarity control signals to a plurality of source drivers in a TFT-LCD panel for changing the polarity distribution of the liquid crystal molecules in the panel. The method is characterized by dynamically changing the positions of polarity inversion for alleviating the problem of undercharging under high resolution and high frequency conditions; utilizing both polar and reverse polar driving signals for solving the problem of color shift in “checker board” checking signals; and providing a mechanism for mending the problem of undercharging of the first horizontal line.Type: ApplicationFiled: April 8, 2010Publication date: February 3, 2011Inventors: Mu-Shan LIAO, Yuan-Jing Chang, Hung-Chun Li