Patents Assigned to Chi Mei Optoelectronics Corporation
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Publication number: 20100208176Abstract: A wide viewing angle transflective liquid crystal display includes a retardation film and pixels positioned between first and second substrates, each pixel including a transmissive region and a reflective region. The retardation film has a phase retardation that compensates the phase retardation of a liquid crystal layer in the transmissive region for normal incident light to achieve a dark state when no data voltage is applied to the pixel. The retardation film and a liquid crystal layer in the reflective region has a phase retardation in a range between 0.22? and 0.28? with respect to normal incident light to achieve a dark state when no data voltage is applied to the pixel, ? being the wavelength of the incident light.Type: ApplicationFiled: February 17, 2009Publication date: August 19, 2010Applicants: Chi Mei Optoelectronics Corporation, University of Central Florida Research Foundation, Inc.Inventors: Zhibing Ge, Shin-Tson Wu, Wang-Yang Li, Chung- Kuang Wei
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Publication number: 20100163869Abstract: A bonding inspection structure is provided. The bonding inspection structure includes at least a elastic bump located on a substrate. At least an opening is formed in the top portion of the elastic bump. An inspection area of the top portion of the elastic bump is larger than an area of the opening.Type: ApplicationFiled: April 29, 2009Publication date: July 1, 2010Applicants: TAIWAN TFT LCD ASSOCIATION, CHUNGHWA PICTURE TUBES, LTD., AU OPTRONICS CORPORATION, HANNSTAR DISPLAY CORPORATION, CHI MEI OPTOELECTRONICS CORPORATION, INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Sheng-Shu Yang, Hsiao-Ting Lee, Chao-Chyun An
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Publication number: 20100163281Abstract: A base of circuit board, a circuit board, and a method of fabricating thereof are provided. The circuit board includes a substrate, a plurality of elastic bumps and a patterned circuit layer. The elastic bumps arranged in at least an array are located on the substrate. The patterned circuit layer is located on a portion of the elastic bumps and a portion of the substrate. The base of the circuit board and the method of fabricating thereof are also included in the present invention.Type: ApplicationFiled: June 3, 2009Publication date: July 1, 2010Applicants: TAIWAN TFT LCD ASSOCIATION, CHUNGHWA PICTURE TUBES, LTD., AU OPTRONICS CORPORATION, HANNSTAR DISPLAY CORPORATION, CHI MEI OPTOELECTRONICS CORPORATION, INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Ngai Tsang, Kuo-Shu Kao
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Patent number: 7745267Abstract: A manufacturing method of an active layer of a thin film transistor is provided. The method includes following steps. First a substrate is provided, and a semiconductor precursor solution is then prepared through a liquid process. Thereafter, the semiconductor precursor solution is provided on the substrate to form a semiconductor precursor thin film. After that, a light source is used to irradiate the semiconductor precursor thin film to remove residual solvent and allow the semiconductor precursor thin film to produce semiconductor property, so as to form a semiconductor active layer.Type: GrantFiled: December 22, 2006Date of Patent: June 29, 2010Assignees: Taiwan TFT LCD Association, Chunghwa Picture Tubes, Ltd., Au Optronics Corporation, Hannstar Display Corporation, Chi Mei Optoelectronics Corporation, Industrial Technology Research Institute, TPO Dispalys Corp.Inventors: Hsiang-Yuan Cheng, Shin-Chuan Chiang, Shih-Hsiang Lai, Chin-Chih Yu, Bor-Chuan Chuang
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Publication number: 20100149157Abstract: An active matrix display and a method for driving the display are provided. During a first scan period, a first scan line and a second scan line of the active matrix display are both at a high voltage level so that a first pixel electrode of the display is electrically connected to a data line of the display, and a second pixel electrode of the display is electrically connected to the first pixel electrode. During a second scan period, the first scan line is at the high voltage level while the second scan line is at a low voltage level so that the first pixel electrode is electrically connected to the data line and the second pixel electrode is electrically disconnected from the first pixel electrode.Type: ApplicationFiled: December 11, 2009Publication date: June 17, 2010Applicant: CHI MEI OPTOELECTRONICS CORPORATIONInventors: Ming-Chia Shih, Fu-Chi Yang, Chia-Hang Lee, Chao-Jen Huang
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Publication number: 20100128025Abstract: A method of manufacturing and driving an optically compensated birefringence (OCB) mode liquid crystal (LC) panel is provided. In the method, the OCB LC panel is applied which is characterized that a closed structure region with HAN, VA or Bend property is around a display region of the OCB LC panel. Thereafter, the OCB LC panel is driven by a mode of multistage voltage variation. The mode of multistage voltage variation includes applying a high voltage to LC molecules in the OCB LC panel for transferring them to a bend or a VA state, decaying the high voltage to a low voltage above a bend state holding voltage of the OCB LC panel, and turning off the voltage to zero so as to maintain the configuration of LC molecules in the OCB LC panel in a ?-twist state.Type: ApplicationFiled: June 16, 2009Publication date: May 27, 2010Applicants: TAIWAN TFT LCD ASSOCIATION, CHUNGHWA PICTURE TUBES, LTD., AU OPTRONICS CORPORATION, HANNSTAR DISPLAY CORPORATION, CHI MEI OPTOELECTRONICS CORPORATION, INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Ze-Yu Yen, Ding-Jen Chen, Jian-Lung Chen, Cho-Ying Lin
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Patent number: 7724227Abstract: A flat panel display includes a plurality of pixel circuits, each pixel circuit including a switch and a storage capacitor, in which the storage capacitor receives pixel data from a data line when the switch is turned on. A scan driver controls the switches of the pixel circuits, in which the scan driver turns on a first switch of a first pixel circuit for a first length of time within a frame period, and turns on a second switch of a second pixel circuit for a second length of time within the frame period, the first length of time being different from the second length of time.Type: GrantFiled: December 22, 2006Date of Patent: May 25, 2010Assignee: Chi Mei Optoelectronics CorporationInventors: Ying-Wen Yang, Yung-Li Huang
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Patent number: 7719510Abstract: A flat panel display, a display driving apparatus thereof and a shift register thereof are disclosed. The shift register is adapted for driving a flat panel display. The shift register receives an input signal and a clock signal. The shift register includes a delay unit and a buffer unit. The delay unit is used to delay the input signal for a half period of the clock signal and then output the delayed input signal. The buffer unit receives the delayed input signal, and provides an extra driving power accordingly. The buffer unit is operated by a fixed first voltage and a fixed second voltage.Type: GrantFiled: May 5, 2006Date of Patent: May 18, 2010Assignees: Chi Mei El Corporation, Chi Mei Optoelectronics CorporationInventors: Hong-Ru Guo, Chien-Hsiang Huang, Ming-Chun Tseng
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Patent number: 7714947Abstract: The present invention relates to the removal of ion (42, 44, 902) contaminations from liquid crystal layers (901) in liquid crystal display devices (900). The ions (42, 44, 902) are removed by means of so called ion pumping, which utilizes the anisotropic viscosity of liquid crystals. The ions (42, 44, 902) are pumped up and down in the liquid crystal layer by means of an alternating electric filed. The alternating electric field simultaneously alters the alignment of directors (41) in the liquid crystal. The viscosity in the liquid crystal is related to the director directions, and the ions (42, 44, 902) are thereby moved in non-closed trajectories (43, 45). The inventive ion pumping can be further improved using an asymmetric or biased alternating electric field.Type: GrantFiled: August 17, 2004Date of Patent: May 11, 2010Assignee: Chi Mei Optoelectronics CorporationInventors: Alwin Rogier Martijn Verschueren, Kristiaan Neyts, Goran Stojmenovik
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Publication number: 20100103520Abstract: An optical sheet suitable for linear polarized light to pass through is provided. The optical sheet includes a substrate and a retardation film. The retardation film herein is located on the substrate and has a plurality of optical axes with different extending directions. The linear polarized light after passing through the retardation film is converted into a plurality of linear polarized light with different polarization directions, wherein the retardation film substantially has a phase retardation of ?/2 at anywhere of the area where the linear polarized light passes through and ? is the wavelength of the linear polarized light. Besides, the present invention also provides a display apparatus, a fabricating method of an optical sheet and a fabricating method of a display apparatus.Type: ApplicationFiled: December 25, 2008Publication date: April 29, 2010Applicants: TAIWAN TFT LCD ASSOCIATION, CHUNGHWA PICTURE TUBES, LTD., AU OPTRONICS CORPORATION, HANNSTAR DISPLAY CORPORATION, CHI MEI OPTOELECTRONICS CORPORATION, INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Wei-Chih Liu, Jie-Shiung Yang
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Patent number: 7696975Abstract: A liquid crystal display includes an active display area and gate drivers. The active display area includes display blocks, each display block including pixel rows. The gate driver sequentially outputs gate signals to the display block and drives corresponding pixel rows to display pixel images, or outputs a dummy gate signal to the display block to drive the corresponding pixel rows to display a compensation image for improving motion image quality. A method of driving the liquid crystal display includes using the gate drivers to sequentially drive the pixel rows of each of the display blocks to display pixel images, and using the gate driver to output a dummy gate signal to simultaneously drive the pixel rows of another display block to display the compensation image.Type: GrantFiled: October 21, 2005Date of Patent: April 13, 2010Assignee: Chi Mei Optoelectronics CorporationInventors: Hui-Wen Yang, Chia-Ho Yang
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Publication number: 20100060617Abstract: A display includes an array of pixel circuits and data drivers to drive the pixel circuits. The data drivers include a first data driver to receive pixel data according to a first clock frequency and to forward some of the pixel data to a second data driver according to a second clock frequency, the second clock frequency being different from the first clock frequency.Type: ApplicationFiled: November 13, 2009Publication date: March 11, 2010Applicant: CHI MEI OPTOELECTRONICS CORPORATIONInventors: Tzong-Yau Ku, Yung-Yu Tsai
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Publication number: 20100044696Abstract: A thin film transistor is provided. The thin film transistor includes a substrate, a gate, a source/drain, an insulating layer, and a semiconductor active layer. The gate and the source/drain are respectively deposited on the substrate and are separated by the insulating layer on the substrate. The semiconductor active layer connects the source and the drain. The material of the semiconductor active layer is a semiconductor precursor which produces semiconductor property after being irradiated by a light source. A liquid crystal display which includes the above thin film transistor is also provided.Type: ApplicationFiled: October 28, 2009Publication date: February 25, 2010Applicants: TAIWAN TFT LCD ASSOCIATION, CHUNGHWA PICTURE TUBES, LTD., AU OPTRONICS CORPORATION, HANNSTAR DISPLAY CORPORATION, CHI MEI OPTOELECTRONICS CORPORATION, INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, TPO DISPLAYS CORP.Inventors: Hsiang-Yuan Cheng, Shin-Chuan Chiang, Shih-Hsiang Lai, Chin-Chih Yu, Bor-Chuan Chuang
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Patent number: 7652607Abstract: In a digital to analogue converter, a plurality of digital inputs are used to select one of first and second binary voltage levels as binary inputs (10) to the converter. A capacitor circuit (C, 2C, . . . , 32C) is associated with each input, and these are controlled to output an effective voltage to an output load comprising the first binary voltage level, the second binary voltage level or an average of the first and second binary voltage levels in dependence on the bits of the digital input word. The plurality of capacitor circuits can be operated in either a voltage divider mode (to provide an average output) or a resistor mode depending on the value of the digital data. Operation of the capacitor circuits in this way can result in a reduction in the currents flowing and can therefore reduce the power consumption.Type: GrantFiled: March 23, 2005Date of Patent: January 26, 2010Assignee: Chi Mei Optoelectronics CorporationInventor: Martin J. Edwards
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Publication number: 20090322798Abstract: A display includes pixels, each pixel including a first display region and a second display region. A controller controls driving of the first and second display regions of each pixel to set the gray scale levels of the first and second display regions based on an overall gray scale level to be shown by the pixel. The controller sets the gray scale level of the second display region independently of the gray scale level of the first display region.Type: ApplicationFiled: May 4, 2009Publication date: December 31, 2009Applicant: Chi Mei Optoelectronics CorporationInventors: Chun-Hsu Lin, Chih-Yung Hsieh, Chien-Hong Chen
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Patent number: 7639244Abstract: A display includes an array of pixel circuits and data drivers to drive the pixel circuits. The data drivers include a first data driver to receive pixel data according to a first clock frequency and to forward some of the pixel data to a second data driver according to a second clock frequency, the second clock frequency being different from the first clock frequency.Type: GrantFiled: June 2, 2006Date of Patent: December 29, 2009Assignee: Chi Mei Optoelectronics CorporationInventors: Tzong-Yau Ku, Yung-Yu Tsai
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Patent number: 7633472Abstract: In an active matrix display device, such as AMLCD, having an array of pixels (P) addressed via sets of row and column conductors (14, 15) to which, respectively, selection and data signals are applied, each pixel comprises a plurality of sub pixels (P1-P4) which each have an associated switch, for example a TFT, (T1-T4) and which are addressed with data signals through a common switch (T1) coupled to a column conductor (15). Addressing the sub pixels through a common switch reduces the effective capacitance of the column conductor.Type: GrantFiled: September 12, 2003Date of Patent: December 15, 2009Assignee: Chi Mei Optoelectronics CorporationInventor: Martin J. Edwards
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Publication number: 20090305473Abstract: A method for fabricating a thin film transistor is provided. A gate is formed on a substrate. A gate insulating layer is formed on the substrate to cover the gate. A metal oxide material layer is formed on the gate insulating layer. A photoresist layer is formed on the metal oxide material layer, in which a thickness of the photoresist layer above the gate is larger than that of the photoresist layer above two sides adjacent to the gate. A portion of the metal oxide material layer is removed to form a metal oxide active layer by using the photoresist layer as a mask. The photoresist layer above the two sides adjacent to the gate is removed and the remaining photoresist layer covers a portion of the metal oxide active layer. A source and a drain are formed on the metal oxide active layer covered by the photoresist layer.Type: ApplicationFiled: October 27, 2008Publication date: December 10, 2009Applicants: TAIWAN TFT LCD ASSOCIATION, CHUNGHWA PICTURE TUBES, LTD., AU OPTRONICS CORPORATION, HANNSTAR DISPLAY CORPORATION, CHI MEI OPTOELECTRONICS CORPORATION, INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Fang-Chen Luo, Shuo-Wei Liang, Shin-Chuan Chiang, Chao-Nan Chen, Chin-Chih Yu
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Patent number: 7623107Abstract: Driving schemes are described in which rows (1 to m) are selected one at a time and column data voltages are inverted to provide inversion schemes for display devices comprising pixels (12) arranged in rows (1 to m) and columns (1 to n). The order in which rows are selected is such that a first group of first polarity rows is selected in a first order, a first group of second polarity rows is selected in a second order, a second group of first polarity rows is selected in the second order, and a second group of second polarity rows is selected in the first order, the first order being one of ascending or descending row number order, and the second order being the other of ascending or descending row number order.Type: GrantFiled: July 4, 2005Date of Patent: November 24, 2009Assignee: Chi Mei Optoelectronics CorporationInventor: Steven C. Deane
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Publication number: 20090278785Abstract: A display includes a glass substrate, a source driver and a gate driver. The glass substrate includes multiple pixels. The source driver is used to drives the pixels, and the gate driver disposed on the glass substrate enables the pixels. The gate driver has (N+1) shift registers. The nth shift register includes an input unit, an output unit, an output pull-down unit and a threshold voltage memory unit. When an output signal of the (n+1)th shift register is at a high voltage level, the threshold voltage memory unit turns on the output pull-down unit such that an output signal of the nth shift register is changed to and maintained at a low voltage level. The threshold voltage memory unit stores a characteristic voltage relating to a threshold voltage of the output pull-down unit.Type: ApplicationFiled: May 11, 2009Publication date: November 12, 2009Applicant: Chi Mei Optoelectronics CorporationInventor: Tsai Chin-Cheng