Patents by Inventor Po-Lun Chen

Po-Lun Chen 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: 7453547
    Abstract: An LCD panel includes an array substrate, a color filter substrate positioned above the array substrate, a dielectric layer disposed on the array substrate facing the color filter substrate, and a liquid crystal layer interposed between the array substrate and the color filter substrate. The color filter substrate includes a plurality of red pixel regions, green pixel regions, and blue pixel regions, and the dielectric layer has different thickness corresponding to the red pixel regions, the green pixel regions, and the blue pixel regions. Accordingly, the liquid crystal layer has a first thickness corresponding to the blue pixel regions, a second thickness corresponding to the green pixel regions, and a third thickness corresponding to the red pixel regions. The first thickness is less than the second thickness, and the second thickness is less than the third thickness.
    Type: Grant
    Filed: April 25, 2005
    Date of Patent: November 18, 2008
    Assignee: AU Optronics Corp.
    Inventors: Hsiu-Chi Tung, Chih-Ming Chang, Po-Lun Chen
  • Patent number: 7440048
    Abstract: A transflective liquid crystal display device implementing a color filter having various thicknesses. An insulating layer is formed on a lower substrate. A lower electrode is formed on the insulating layer, wherein the lower electrode has a transmissive portion and a reflective portion. An upper substrate opposing the lower substrate is provided, wherein a side of the upper substrate has a color filter having various thicknesses. A planarization layer is formed on the color filter, wherein the planarization layer is opposite to the lower substrate. An upper electrode is formed on the planarization layer. A liquid crystal layer is interposed between the upper and lower substrates.
    Type: Grant
    Filed: July 19, 2006
    Date of Patent: October 21, 2008
    Assignee: Au Optronics Corp.
    Inventors: Ming-Chin Chang, Yang-En Wu, Po-Lun Chen, Chih-Jen Hu, Ching-Huan Lin
  • Patent number: 7400368
    Abstract: Liquid crystal displays and fabrication methods thereof. The liquid crystal display comprises a first substrate with an active matrix of a plurality of pixels. A second substrate is provided opposing the first substrate. A liquid crystal layer is interposed between the first substrate and the second substrate. Each pixel comprises a polymer dispersed liquid crystal layer corresponding to a first liquid crystal region and a non-polymer dispersed liquid crystal layer corresponding to a second liquid crystal region.
    Type: Grant
    Filed: October 4, 2005
    Date of Patent: July 15, 2008
    Assignee: Au Optronics Corp.
    Inventors: Yi-Ju Chen, Chia-Yu Lee, Chieh-Ting Chen, Po-Lun Chen
  • Patent number: 7385578
    Abstract: A method for warming-up an LCD system which includes a pixel array having a plurality of pixel units. Each pixel unit includes a pixel electrode, and a TFT (thin film transistor) provide with a source and a gate such that a gate signal inputted into the gate can switch on and switch off the TFT so as to permit transfer of a data signal from the source to the pixel electrode. The method includes the steps: floating the source of the TFT; and applying the gate signal onto the gate which is coupled to the pixel electrode in such a manner that the pixel electrode possesses a voltage level which is substantially equal to that of the gate signal.
    Type: Grant
    Filed: March 3, 2005
    Date of Patent: June 10, 2008
    Assignee: AU Optronics Corp.
    Inventors: Ting-Jui Chang, Po-Lun Chen
  • Patent number: 7359025
    Abstract: An array substrate capable for a liquid crystal display (LCD). A pixel electrode is disposed in a pixel region of a substrate, which comprises at least one slit. A storage capacitor is disposed between the substrate and the pixel electrode, which comprises a bottom electrode, a capacitor dielectric layer, and a top electrode. The bottom electrode is disposed in the pixel region, creating an overlap region with the slit. The capacitor dielectric layer and the top electrode are successively disposed on the bottom electrode, in which the top electrode comprises at least one recess region to partially expose the overlap region.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: April 15, 2008
    Assignee: AU Optronics Corp.
    Inventors: Ming-Chou Wu, Jenn-Jia Su, Cheng-Han Tsao, Po-Lun Chen
  • Publication number: 20080074587
    Abstract: A pixel structure of a display including a first substrate, a second substrate, and a liquid crystal (LC) layer disposed therebetween. The pixel structure comprises a plurality of first, second, and third sub-pixels; a plurality of alignment controlling patterns, respectively formed in the first, second and third sub-pixels for controlling alignment direction of LC molecules of the LC layer; a plurality of opaque regions, respectively formed in the first, second, and third sub-pixels, and substantially aligned with the portion of the alignment controlling patterns, so that the alignment controlling patterns are shielded by the substantially corresponded opaque regions having different areas in at least two of the colored sub-pixels.
    Type: Application
    Filed: May 17, 2007
    Publication date: March 27, 2008
    Applicant: AU OPTRONICS CORP.
    Inventors: Ming-Feng Tien, Kun-Yu Lin, Po-Lun Chen
  • Publication number: 20080062107
    Abstract: A liquid crystal display includes a gate driver, a data driver and a pixel matrix. The gate driver is for outputting a plurality of gate signals successively. The data driver is for providing a plurality of data signals. The pixel matrix includes a number of pixels. Each pixel includes a first sub-pixel, a second sub-pixel and a voltage coupling device. The voltage coupling device is coupled between the first sub-pixel and the second sub-pixel such that pixel voltages of the first sub-pixel and the second sub-pixel are different and have relevant variation.
    Type: Application
    Filed: March 5, 2007
    Publication date: March 13, 2008
    Applicant: AU OPTRONICS CORP.
    Inventors: Jenn-Jia Su, Ming-Feng Tien, Ting-Jui Chang, Po-Lun Chen
  • Patent number: 7333158
    Abstract: A three-dimensional (3D) display system includes a liquid crystal display and a directional backlight module. The backlight module disposed behind the liquid crystal display includes a light-guide plate, a focusing layer, a left backlight source, a right backlight source, and a first V-shaped micro-grooved and a second V-shaped micro-grooved structures of the light-guide plate. The focusing layer is disposed between the light-guide plate and the liquid crystal display. The 3D display method is to instantly switch on and off the left and the right backlight sources to alternately emit the light from the left side and right side of light-guide plate. By means of the first and the second V-shaped micro-grooved structure, the light transmitted from the light-guide plate is focused by the focusing layer within a particular range of angles and passing through the liquid crystal layer for being alternately projected to form a 3D image.
    Type: Grant
    Filed: January 4, 2005
    Date of Patent: February 19, 2008
    Assignee: AU Optronics Corp.
    Inventors: Ko-Wei Chien, Han-Ping Shieh, Yu-Mioun Chu, Ching-Yu Tsai, Yung-Lun Lin, Chih-Jen Hu, Chih-Ming Chang, Yi-Cheng Hsu, Po-Lun Chen
  • Publication number: 20070290970
    Abstract: A method for driving a normal black type liquid crystal display (LCD) includes driving the LCD by applying uncompensated source signals corresponding to gray levels; recording first optimized common signal voltages (Vcom-opt1) of common signals corresponding with the gray levels; adjusting the source signal to drive the LCD so second optimized common signal voltages (Vcom-opt2) of common signals corresponding with the gray levels conform to the following conditions: (1) when the gray level is lower than a predetermined gray level, the Vcom-opt2 exceeds a predetermined voltage of the common signal and the absolute difference between the Vcom-opt2 and the predetermined voltage is less than or equal to that between the Vcom-opt1 and the predetermined voltage; and (2) when the gray level exceeds the predetermined gray level, the absolute difference between the Vcom-opt2 and the predetermined voltage is less than or equal to that between the Vcom-opt1 and the predetermined voltage.
    Type: Application
    Filed: November 2, 2006
    Publication date: December 20, 2007
    Applicant: AU OPTRONICS CORP.
    Inventors: Pin-Miao Liu, Cheng-Han Tsao, Po-Lun Chen
  • Publication number: 20070279370
    Abstract: A field-sequential liquid crystal display and method for driving the same are disclosed to provide sufficient gate-on time for attaining a high-resolution field-sequential liquid crystal display. According to one embodiment of the present invention, at least two adjacent rows of pixels are scanned to turn on transistors during a scan period. During the same scan period, image data are respectively provided to the at least two adjacent rows of pixels to charge associated capacitors for display.
    Type: Application
    Filed: August 25, 2006
    Publication date: December 6, 2007
    Inventors: Chia-Yu Lee, Ting-Jui Chang, Kun-Yu Lin, Po-Lun Chen, Jeng-Fang Wu
  • Patent number: 7289099
    Abstract: A transflective liquid crystal display device. A first substrate having viewing and peripheral areas is provided. The viewing area comprises transmissive and reflective regions. A backlight device is disposed under the first substrate, used to provide a backlight passing through the transmissive region. A power management controller connects the backlight device to control an intensity of the backlight. At least one photodetector is formed on the first substrate in the peripheral area, wherein the photodetector detects an intensity of ambient light above the first substrate, and then provides a corresponding signal to the power management controller to control the intensity of the backlight. According to the invention, the intensity of the backlight automatically becomes greater when the intensity of the ambient light becomes lower, and the intensity of the backlight automatically becomes lower when the intensity of the ambient light becomes greater.
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: October 30, 2007
    Assignee: Au Optronics Corporation
    Inventors: Ming-Chin Chang, Yang-En Wu, Po-Lun Chen
  • Publication number: 20070247416
    Abstract: A transflective liquid crystal display device. A first substrate having viewing and peripheral areas is provided. The viewing area comprises transmissive and reflective regions. A backlight device is disposed under the first substrate, used to provide a backlight passing through the transmissive region. A power management controller connects the backlight device to control an intensity of the backlight. At least one photodetector is formed on the first substrate in the peripheral area, wherein the photodetector detects an intensity of ambient light above the first substrate, and then provides a corresponding signal to the power management controller to control the intensity of the backlight. According to the invention, the intensity of the backlight automatically becomes greater when the intensity of the ambient light becomes lower, and the intensity of the backlight automatically becomes lower when the intensity of the ambient light becomes greater.
    Type: Application
    Filed: June 25, 2007
    Publication date: October 25, 2007
    Applicant: AU OPTRONICS CORP.
    Inventors: Ming-Chin Chang, Yang-En Wu, Po-Lun Chen
  • Publication number: 20070211007
    Abstract: A liquid crystal display including a number of scan lines, a number of data lines, a pixel, a first switch circuit, and a second switch circuit is provided. The scan lines include an Nth scan line and an (N+1)th scan line, where N is a positive integer. The pixel includes a first sub-pixel and a second sub-pixel. The first switch circuit is coupled to both the Nth scan line and the (N+1)th scan line and is used for controlling the second sub-pixel. The second switch circuit is coupled to the Nth scan line and is used for controlling the first sub-pixel. The pixel is used for displaying a red, a green, a blue, or a white color.
    Type: Application
    Filed: September 22, 2006
    Publication date: September 13, 2007
    Applicant: AU OPTRONICS CORP.
    Inventors: Jenn-Jia Su, Ming-Feng Tien, Chia-Leng Yang, Ting-Jui Chang, Po-Lun Chen
  • Publication number: 20070177095
    Abstract: An optical compensated bend (OCB) mode liquid crystal display (LCD) includes a pixel electrode, a color filter, a common electrode and a liquid crystal layer. The pixel electrode is formed on the first substrate of the OCB mode LCD. The color filter is formed on the second substrate of the OCB mode LCD. The common electrode is formed on the color filter. The liquid crystal layer is sandwiched between the first substrate and the second substrate. A step structure is formed on the second structure, so that the liquid crystal molecules in the liquid crystal layer are twisted into the bend state from the splay state uniformly and quickly.
    Type: Application
    Filed: July 24, 2006
    Publication date: August 2, 2007
    Applicant: AU Optronics Corp.
    Inventors: Chia-Yu Lee, Ting-Jui Chang, Po-Lun Chen, Jeng-Fang Fu
  • Publication number: 20070126965
    Abstract: A pixel structure for a multi-domain vertical alignment liquid crystal display (MVA-LCD) is disclosed. The pixel structure includes a pixel array having a plurality of adjacently arranged sub-pixels; and a first substrate and a second substrate having, respectively, first and second means for controlling tilt angles of liquid crystal molecules between the first and second substrates. The first and second means are alternately disposed to define each of the sub-pixels into a plurality of different azimuthal angle domains. Moreover, each of the sub-pixels also is further defined into at least two different polar angle domains. The azimuthal angle domains and polar angle domains of two adjacent sub-pixels have a mirror-image arrangement.
    Type: Application
    Filed: July 5, 2006
    Publication date: June 7, 2007
    Applicant: AU OPTRONICS CORP.
    Inventors: Yi-Pai Huang, Ting-Jui Chang, Po-Lun Chen, Cheng-Han Tsao
  • Publication number: 20070097305
    Abstract: A liquid crystal display panel including several first electrode portions, several second electrode portions, and a smectic liquid crystal layer is provided. The first electrode portions and the second electrode portions are disposed on a first substrate. When an AC voltage is applied on the first electrode portions and the second electrode portions, the direction of a horizontal electrical field formed between each first electrode portion and the adjacent second electrode portion is parallel to the surface of the first substrate. The smectic liquid crystal layer is interposed between the first substrate and a second substrate. During the phase change of a liquid crystal molecule of the smectic liquid crystal layer, the horizontal electrical field generated by applying the AC voltage on the first electrode portions and the second electrode portions facilitates the alignment of the liquid crystal molecule of the smectic liquid crystal layer.
    Type: Application
    Filed: October 26, 2006
    Publication date: May 3, 2007
    Applicant: AU OPTRONICS CORP.
    Inventors: Tzu-Yuan Lin, Po-Kai Liu, Ren-Hung Huang, Po-Chang Wu, Fu-Cheng Sie, Chun-Hung Chiang, Shune-Long Wu, Jin-Jei Wu, Po-Lun Chen
  • Publication number: 20070085956
    Abstract: A multi-domain vertical alignment thin film transistor liquid crystal display (MVA TFT-LCD) device is disclosed. The MVA TFT-LCD comprises a MVA TFT-LCD panel, a first wide viewing film (WV film), a first polarizer film, a second WV film, and a second polarizer film. The first WV film is on the first surface of the MVA TFT-LCD panel. The first polarizer film is on the first WV film, wherein diffusive patterns are formed on surface of the first polarizer. The second WV film is on the second surface of the MAV TFT-LCD panel. The second polarizer film is on the second WV film. The MVA TFT-LCD of the invention can reduce the issues of color shift and color washing out resulting from the change of the view angle.
    Type: Application
    Filed: October 12, 2006
    Publication date: April 19, 2007
    Inventor: Po-Lun Chen
  • Publication number: 20070046869
    Abstract: A liquid crystal display with transmissive region and reflective region is provided. The display comprises an upper substrate and a lower substrate, which is settled in parallel with the upper substrate. A reflective layer is located on the reflective region of the lower substrate and an insulation layer covers the reflective layer and the lower substrate. Positive and negative driving electrodes are chiastically settled on the insulation layer. A first alignment film is positioned on the inner surface of the upper substrate, and the alignments of the first alignment film on the transmissive region and reflective region are different. A second alignment film covers the insulation layer, the positive and negative electrodes. A liquid crystal layer is located between the first alignment film and the second alignment film.
    Type: Application
    Filed: May 12, 2006
    Publication date: March 1, 2007
    Inventors: Tzu-Yuan Lin, Chun-Hung Chiang, Fu-Cheng Hsieh, Po-Chang Wu, Ren-Hung Huang, Jin-Jei Wu, Chih-Ming Chang, Po-Lun Chen
  • Publication number: 20060250554
    Abstract: A transflective liquid crystal display device implementing a color filter having various thicknesses. An insulating layer is formed on a lower substrate. A lower electrode is formed on the insulating layer, wherein the lower electrode has a transmissive portion and a reflective portion. An upper substrate opposing the lower substrate is provided, wherein a side of the upper substrate has a color filter having various thicknesses. A planarization layer is formed on the color filter, wherein the planarization layer is opposite to the lower substrate. An upper electrode is formed on the planarization layer. A liquid crystal layer is interposed between the upper and lower substrates.
    Type: Application
    Filed: July 19, 2006
    Publication date: November 9, 2006
    Applicant: AU OPTRONICS CORP.
    Inventors: Ming-Chin Chang, Yang-En Wu, Po-Lun Chen, Chih-Jen Hu, Ching-Huan Lin
  • Publication number: 20060244890
    Abstract: A liquid crystal display device and a forming method of the electrode plate are disclosed. The forming method of the electrode plate includes providing one or more bottom plane electrodes, one or more conductive layers and a dielectric layer, floating the bottom plane electrodes, electrically connecting the conductive layers and an electrode of a thin film transistor, positioning the dielectric layer between the bottom plane electrodes and the conductive layers, utilizing the conductive layers, the dielectric layer and the bottom plane electrodes to form a coupling capacitor, and adjusting the capacitance of the coupling capacitor to control the voltage on the bottom plane electrodes. Therefore, the liquid crystal display device makes every sub-pixel have a predetermined voltage-transmittance characteristic curve by controlling the voltage on the bottom plane electrodes.
    Type: Application
    Filed: August 26, 2005
    Publication date: November 2, 2006
    Inventors: Po-Lun Chen, Ming-Feng Tien, Jenn-Jia Su, Ming-Chou WU