Patents Assigned to Chi Mei Optoelectronics Corp.
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Publication number: 20100086097Abstract: A shift register circuit includes a latch unit, a leakage current control unit, and a first output unit. The latch unit outputs a latch signal in accordance with a clock signal and an input signal. The first output unit outputs an output signal in accordance with the latch signal. The leakage current control unit is electrically connected between the latch unit and the first output unit for outputting the latch signal to the first output unit in accordance with the clock signal.Type: ApplicationFiled: October 6, 2009Publication date: April 8, 2010Applicants: CHI MEI EL CORP., CHI MEI OPTOELECTRONICS CORP.Inventors: Ming-Chun TSENG, Tsung-Chien TSAI, Yu-Wen CHIOU, Hong-Ru GUO
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Publication number: 20100079366Abstract: In a backlight module of a display device, a first light source, a second light source, and a third light source are respectively and sequentially in a first sub-frame period, a second sub-frame period, and a third sub-frame period of a frame period so that the backlight module emits predominantly the first color light, the second color light, and the third color light during the first sub-frame period, the second sub-frame period, and the third sub-frame period, respectively. At least one of the second and third light sources also emits the second or third color light during a part of the first sub-frame period.Type: ApplicationFiled: May 27, 2009Publication date: April 1, 2010Applicant: CHI MEI OPTOELECTRONICS CORP.Inventors: Wen-Tsung LIN, Yung-Yu TSAI, Yu-Yeh CHEN, Feng-Sheng LIN
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Patent number: 7688295Abstract: A display has plural pixel groups each having plural color pixels. In a given frame that is divided into a first sub-period and a second sub-period, a first signal is provided in the first sub-period to a pixel of a given color in a first pixel group, and a second signal is provided to the pixel in the second sub-period. The first signal is set to one of a first polarity and a second polarity, and the second signal is set to one of the first polarity and second polarity, wherein the first signal and the second signal form a first sequence. A pixel of the given color in a second pixel group that is adjacent the first pixel group is driven with a second sequence of signals that is the same as the first sequence.Type: GrantFiled: March 24, 2006Date of Patent: March 30, 2010Assignee: Chi Mei Optoelectronics Corp.Inventors: Ying-Hao Hsu, Ming-Chia Shih
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Patent number: 7688402Abstract: A backlight module includes a light box and multiple real light sources. The light box has an opening and a plurality of substantially parallel grooves recessed from a bottom surface thereof. Each of the slots has a reflection curved surface. A light source allocation line is defined between every two adjacent grooves. The light source allocation lines are parallel to the grooves. The sum of shortest distances between any point of the reflection curved surface and the two adjacent light source allocation lines is substantially the same. In addition, the real light sources are alternately allocated in the light source allocation lines. A part of light emitted from each light source is reflected from the reflection curved surface to the light source allocation line in which no light source is allocated. Thereby, a virtual light source is formed on the light source allocation line that does not contain a real light source.Type: GrantFiled: February 27, 2006Date of Patent: March 30, 2010Assignee: Chi Mei Optoelectronics Corp.Inventors: Kuo-Tsun Huang, Chen-Pin Hung
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Publication number: 20100066656Abstract: A flat panel needs a reduced number of gate drivers and/or their pins by using two spaced scan lines to drive pixel units together. In the panel, additional capacitors are disposed on the scan lines and/or the scanning waveform of the scan signal is changed so as to reduce the influence of the scan signal on the pixel voltage. Alternatively or additional, such panel has control lines for indirectly supplying scan signals to the scan lines.Type: ApplicationFiled: May 15, 2009Publication date: March 18, 2010Applicant: CHI MEI OPTOELECTRONICS CORP.Inventor: YUNG-SHUN YANG
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Patent number: 7671943Abstract: A transflective liquid crystal display (LCD) panel includes an active device array substrate, an opposite substrate, and a liquid crystal layer in between. The active device array substrate includes scan lines, data lines, and pixel units. Each pixel unit includes an active device, a reflective pixel electrode, and a transparent pixel electrode. The active device is electrically connected to the corresponding scan line and data line. The reflective pixel electrode and the transparent pixel electrode are respectively disposed in a reflective region and a transmissive region and both electrically connected to the active device. The liquid crystal molecules in the reflective region are pre-tilted at a pretilt angle.Type: GrantFiled: January 31, 2008Date of Patent: March 2, 2010Assignee: Chi Mei Optoelectronics Corp.Inventors: Cheng-Jen Chu, Chen-Kuan Kao, Chung-Kuang Wei
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Publication number: 20100026948Abstract: A liquid crystal display includes a first substrate, a second substrate and a liquid crystal layer. The first substrate has a pixel electrode having many first slits and many second slits, connected to a third slit. Each first and second slit respectively stretches along a first and a second vector with a starting point in a junction with the third slit. Liquid crystal molecules near an alignment layer of the second substrate is aligned by the alignment layer to pre-tilt. Each projection of the long-axis of at least part of the pre-tilted liquid crystal molecules on the second substrate forms a third vector with a starting point at the end of the liquid crystal molecule near the alignment layer. An included angle between the first and the third vector is ?1, and an included angle between the second and the third vector is ?2. 90°<?1<160°, and 90°<?2<160°.Type: ApplicationFiled: July 23, 2009Publication date: February 4, 2010Applicant: Chi Mei Optoelectronic Corp.Inventors: Chun-Jui Wang, Chien-Hong Chen, Chih-Yung Hsieh, Heng-Hsien Li, Wei-Ting Hsu
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Patent number: 7656475Abstract: A liquid crystal display (LCD) module includes a backlight module and an LCD panel. The backlight module has an illumination device for emitting at least a first, a second, and a third color light. The wavelength of the second color light is between 520 nm and 540 nm. The LCD panel is provided to display an image with the first, second and third color lights provided as light sources. The LCD panel includes a color filter having at least a first, a second, and a third filtering layer for filtering the first, second, and third color lights, respectively. The LCD panel also includes a liquid crystal layer disposed next to the color filter. The peak value of a transmission spectrum of the second filtering layer is between 520 nm and 540 nm, and the full width at half maximum of the transmission spectrum of the second filtering layer is between 90 nm and 120 nm.Type: GrantFiled: May 31, 2006Date of Patent: February 2, 2010Assignee: Chi Mei Optoelectronics Corp.Inventor: Hung-Sheng Hsieh
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Publication number: 20100007833Abstract: A liquid crystal display is provided. The liquid crystal display having a plurality of pixel regions includes a first substrate, a second substrate and a liquid crystal layer. The second substrate has a patterned electrode layer having a plurality of complete coverage regions and at least one slit distribution region. Each of the complete coverage regions is located in a corresponding pixel region. The liquid crystal layer is disposed between the first substrate and the second substrate. Liquid crystal molecules of the liquid crystal layer have various slanting directions, and each of the complete coverage regions is located at a slanting center of the slanting directions of the liquid crystal molecules. The slit distribution region is used for stabilizing the slanting directions of liquid crystal molecules within the liquid crystal layer.Type: ApplicationFiled: July 8, 2009Publication date: January 14, 2010Applicant: CHI MEI OPTOELECTRONIC CORP.Inventors: Chun-Yi Kuo, Wu-Liu Tsai, Fuh-Tsang Wu
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Publication number: 20100007595Abstract: In a driving method for a liquid crystal panel, overdriving pixel data is obtained either independently of the FRC pixel data or depending on a difference between the FRC pixel data and previous FRC pixel data.Type: ApplicationFiled: December 8, 2008Publication date: January 14, 2010Applicant: CHI MEI OPTOELECTRONICS CORP.Inventors: Yao-Ching CHIANG, Yu-Yeh CHEN
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Publication number: 20090325453Abstract: A method for alignment treatment of a substrate for a liquid crystal display (LCD) device includes the steps of: forming an alignment film including a plurality of molecules with curable parts on a substrate; applying an electrical field on the substrate to rotate the curable parts; and curing the curable parts such that the curable parts are cured along a first direction. A manufacturing method of the LCD device is also disclosed.Type: ApplicationFiled: June 29, 2009Publication date: December 31, 2009Applicant: CHI MEI OPTOELECTRONICS CORP.Inventors: Han Lang LEE, Shu Hao HSU, Cheng-Hsu CHUANG
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Publication number: 20090316061Abstract: In a pixel array substrate, scan lines intersect data lines to define first to third sub-pixel regions. First to third conductive parts are respectively disposed in the first to third sub-pixel regions. First to third capacitor electrodes are respectively disposed over the first to third conductive parts to form pixel storage capacitors. A spacer is disposed over the third capacitor electrode. At least one of a shape or a size of the third capacitor electrode is different from that of the first or second capacitor electrode.Type: ApplicationFiled: June 19, 2009Publication date: December 24, 2009Applicant: CHI MEI OPTOELECTRONICS CORP.Inventor: Yu-Chien KAO
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Patent number: 7636073Abstract: An image display apparatus includes a light emitting element that emits light depending on an injected electric current; a driver that includes at least a first terminal and a second terminal, and controls the light emitting element based on a potential difference, applied between the first terminal and the second terminal, of a level higher than a predetermined threshold; a storage capacitor that serves to retain a potential on the first terminal of the driver; and a controller that changes the potential on the first terminal via the storage capacitor at writing of electric data current corresponding to a display in a black level.Type: GrantFiled: June 23, 2005Date of Patent: December 22, 2009Assignees: Kyocera Corporation, Chi Mei Optoelectronics Corp.Inventors: Shinya Ono, Yoshinao Kobayashi
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Patent number: 7633509Abstract: A liquid crystal display (LCD) including an LCD panel and a driving unit is provided. The LCD panel has a red pixel, a green pixel, and a blue pixel. The driving unit is applied for receiving a red data signal, a green data signal, and a blue data signal, and outputting a red voltage signal, a green voltage signal, and a blue voltage signal for driving the red pixel, the green pixel, and the blue pixel respectively. When the red data signal, the green data signal, and the blue data signal all correspond to a specific gray level, the pixel luminance of the blue pixel is lower than the pixel luminance of the red pixel as well as the pixel luminance of the green pixel.Type: GrantFiled: October 20, 2008Date of Patent: December 15, 2009Assignee: CHI MEI Optoelectronics Corp.Inventors: Wang-Yang Li, Ying-Hao Hsu
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Patent number: 7632694Abstract: A manufacturing method for a TFT electrode which is implemented to prevent metal ion diffusion to an adjacent insulating layer during fabrication. The method includes, in the order recited, providing a substrate; forming a first metal layer on the substrate which is comprised of one of a single metal layer structure or a multiple metal layer structure; performing a photolithography and etching process on the first metal layer to form a gate electrode of the TFT electrode; forming a transparent conducting electrode on the first metal layer to cover at least the gate electrode and prevent metal ion diffusion during fabrication, the transparent conducting electrode being comprised of one of indium tin oxide, indium zinc oxide, ZnO or an organic material; and forming a pixel electrode which functions as a barrier to prevent metal ion diffusion during fabrication by performing a photolithography and etching process on the transparent conducting electrode.Type: GrantFiled: March 15, 2006Date of Patent: December 15, 2009Assignees: Taiwan TFT LCD Association, Chunghwa Picture Tubes, Ltd., AU Optronics Corp., Quanta Display Inc., Hannstar Display Corp., Chi Mei Optoelectronics Corp., Industrial Technology Research Institute, Toppoly Optoelectronics Corp.Inventors: Cheng-Chung Chen, Yu-Chang Sun, Yi-Hsun Huang, Chien-Wei Wu, Shuo-Wei Liang, Chia-Hsiang Chen, Chi-Shen Lee, Chai-Yuan Sheu, Yu-Chi Lee, Te-Ming Chu, Cheng-Hsing Chen
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Patent number: 7633582Abstract: Embodiments of an optical compensator for a liquid crystal display is disclosed. One embodiment of the optical compensator includes an A-plate and a C-plate wherein: the retardation of the A-plate satisfies the following formula: 0.644<R0(450)/R0(550)<1 the retardation of the C-plate satisfies the following formula: 1<Rth(450)/Rth(550)<1.35 where R0(450) and R0(550) represent the retardation of the A-plate at wavelengths of 450 nm and 550 nm, respectively, and Rth(450) and Rth(550) are the values calculated by Rth=[[nx+ny]/2?nz]×d (where nx, ny and nz represent the three-dimensional refractive indexes of the C-plate as the refractive indexes in the direction of the x-axis, y-axis and z-axis, respectively, and d represents the thickness of the C-plate) for the C-plate at a wavelength of 450 nm and 550 nm, respectively. Other embodiments are also included.Type: GrantFiled: February 18, 2005Date of Patent: December 15, 2009Assignee: CHI MEI Optoelectronics Corp.Inventors: Tsung-Hsien Lin, Ming-Feng Hsieh
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Publication number: 20090295703Abstract: A liquid crystal display panel includes a plurality of pixels and each of the pixels includes a first sub-pixel and a second sub-pixel. The first sub-pixel and the second sub-pixel individually load a source voltage according to a first gate pulse and a second gate pulse, respectively. The second sub-pixel includes a first storage capacitor and a first compensation capacitor. The first compensation capacitor charges or discharges to a predetermined voltage before performing charge neutralization with the first storage capacitor according to a second gate pulse.Type: ApplicationFiled: March 20, 2009Publication date: December 3, 2009Applicant: CHI MEI OPTOELECTRONICS CORP.Inventors: Ming-Feng HSIEH, Yu-Yeh CHEN, Han-Chung HUANG, Yi-Fen CHUANG, Chih-Yung HSIEH
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Patent number: 7626657Abstract: A multi-function integrated polarizer/optical film structure and manufacturing method thereof solves the disadvantages of O type or E type polarizers that cannot simultaneously have high polarizing efficiency and high transmittance. The present invention utilizes optical design for a polarizer/optical film having a plurality of material layers on substrates. The present invention is a multi-function integrated polarizer/optical film structure and manufacturing method thereof, that allows an LCD image to have high polarizing efficiency, high transmittance, wide-angle, high contrast and super-film characteristics simultaneously.Type: GrantFiled: May 18, 2005Date of Patent: December 1, 2009Assignees: Taiwan TFT LCD Association, Chunghwa Picture Tubes, Ltd., Au Optronics Corp., Quanta Display Inc., Hannstar Display Corp., Chi Mei Optoelectronics Corp., Industrial Technology Research Institute, Toppoly Optoelectronics Corp.Inventors: Yue-Shih Jeng, Yuh-Shyang Chen, Wei-Chih Liu, Tsung-Hsiung Wang, Yu-Hsun Wu
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Patent number: 7619641Abstract: A color display comprises a plurality of first pixel groups and a plurality of second pixel groups. Each first pixel group includes three color pixels and each color pixel has at least two subpixels. Each first pixel group has a first arrangement of subpixels. The first pixel groups and the second pixel groups are alternately disposed in at least one direction. Each second pixel group includes three color pixels and each color pixel has at least two subpixels. Each second pixel group has a second arrangement of subpixels. The second arrangement is different from the first arrangement.Type: GrantFiled: October 28, 2005Date of Patent: November 17, 2009Assignee: Chi Mei Optoelectronics Corp.Inventors: Ming-Chia Shih, Ying-Hao Hsu
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Patent number: 7619704Abstract: A display device has a lower substrate, an upper substrate located above and generally parallel with the lower substrate, and a plurality of pixel units located between the lower and upper substrates. Each pixel unit of the display device includes a transmissive area and a transreflective area. The transmissive area allows light to pass through, while the transreflective area includes a light selecting membrane to selectively allow light having a first characteristic to pass through, and reflect light having a second characteristic.Type: GrantFiled: May 9, 2006Date of Patent: November 17, 2009Assignee: Chi Mei Optoelectronics Corp.Inventors: Cheng-Jen Chu, Fu-Cheng Chen