Patents Assigned to TPO Display Corp.
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Patent number: 7744193Abstract: The present invention relates to an inkjet print head (1) comprising at least one nozzle chamber (2), having a nozzle aperture (3) defined in one wall thereof for the ejection of printing fluid out of said aperture (3), and a printing fluid supply channel interconnected with said nozzle chamber (2). A printing fluid droplet tail release guide arrangement (4) is arranged at a predetermined position at an edge of a circumference of said aperture (3). The present invention further relates to a method for increasing droplet placement accuracy in an inkjet print head having at least one nozzle chamber with a nozzle aperture defined in one wall thereof for the ejection of printing fluid out of said aperture. The method comprises the step of providing a printing fluid droplet tail release guide arrangement at a predetermined position at an edge of a circumference of said aperture.Type: GrantFiled: October 25, 2004Date of Patent: June 29, 2010Assignee: TPO Displays Corp.Inventors: Martinus Jacobus Johannes Hack, Johannes Nicolaas Huiberts
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Patent number: 7746331Abstract: A source-follower-type analogue buffer with an active load, a new compensating operation and a display with the source-follower-type analogue buffers are developed to minimize the variation from both the charging time and the device characteristics and maximize the range of the input voltage. In the source-follower-type analogue buffer, during a compensation period, a voltage drop is stored in a proposed storage capacitor, and during a data-input period, the output voltage is compensated by the voltage stored in the storage capacitor.Type: GrantFiled: February 16, 2006Date of Patent: June 29, 2010Assignee: TPO Displays Corp.Inventors: Ya-Hsiang Tai, Cheng-Chiu Pai
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Patent number: 7742044Abstract: A source-follower-type analogue buffer with an active load, a new compensating operation and a display with the source-follower-type analogue buffers are developed to reduce an error voltage which is the difference between an input voltage and an output voltage of the analogue buffer. The source-follower type analogue buffer can also minimize the variation from both the charging time and the device characteristics and maximize the range of the input voltage.Type: GrantFiled: October 10, 2006Date of Patent: June 22, 2010Assignee: TPO Displays Corp.Inventors: Cheng-Ho Yu, Fu-Yuan Hsueh, Wei-Cheng Lin, Keiichi Sano, Ya-Hsiang Tai
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Publication number: 20100133998Abstract: A display device including a display panel is provided, including a substrate having a luminance region and a none-luminance region thereover. An interlayer dielectric layer is disposed over the substrate. A reflection layer is disposed over the interlayer dielectric layer in the luminance region. A planarization layer is disposed over the reflection layer, having a rugged top surface corresponding to the reflection layer. A first electrode is disposed over the planarization layer, having a rugged top surface corresponding to the reflection layer. A pixel defining layer is disposed over the planarization layer, exposing the rugged top surface of the first electrode and defining the luminance region. An electroluminescent layer and a second electrode are sequentially stacked over the first electrode.Type: ApplicationFiled: November 30, 2009Publication date: June 3, 2010Applicant: TPO Displays Corp.Inventors: Ryuji Nishikawa, Hsiang-Lun HSU
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Publication number: 20100129967Abstract: The present invention relates to a method for fabricating thin film transistors (TFTs), which includes the following steps: forming a semi-conductive layer on a substrate; forming a patterned photoresist layer with a first thickness and a second thickness on the semi-conductive layer; pattering the semi-conductive layer by using the patterned photoresist layer as a mask to form a patterned semi-conductive layer; removing the second thickness of the patterned photoresist layer; performing a first ion doping process on the patterned semi-conductive layer by using the first thickness of the patterned photoresist layer as a mask; removing the first thickness of the patterned photoresist layer; and forming a dielectric layer and a gate on the patterned semi-conductive layer. The present invention also discloses a method for fabricating an array substrate including aforementioned TFTs.Type: ApplicationFiled: November 19, 2009Publication date: May 27, 2010Applicant: TPO Displays CorpInventors: Kuo Chu LIAO, Shan Hung TSAI, Su Fen CHEN, Ming Yu CHUNG
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Patent number: 7724344Abstract: A liquid crystal display includes a liquid crystal provided between a first layer and a second layer. The first layer and the second layer may be in a substantially parallel direction to each another. Spacers may be provided in the liquid crystal to keep the first layer and the second layer spaced apart from each other. Electrode layers may include structural elements operable to prevent the spacers from moving through the liquid crystal in the substantially parallel direction. The display may include a first electrode layer and a second electrode layer having one or more gaps defining an electrode structure including electrodes to control the display.Type: GrantFiled: August 13, 2007Date of Patent: May 25, 2010Assignee: TPO Displays Corp.Inventor: Harrie Hermens
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Patent number: 7724327Abstract: A system for displaying images. The system comprises a transflective liquid crystal display (LCD) panel comprising lower and upper substrates opposing each other and a liquid crystal layer disposed therebetween. The lower substrate comprises reflective and transmissive regions. A stack of a protective layer, a transparent electrode and a reflective electrode is disposed on the lower substrate of the reflective and transmissive regions. The reflective electrode comprises an opening corresponding to the transmissive region to substantially expose the underlying transparent electrode. A transparent dielectric layer is disposed on the surface of the upper substrate facing and corresponding to the lower substrate of the reflective region.Type: GrantFiled: March 14, 2006Date of Patent: May 25, 2010Assignee: TPO Displays Corp.Inventors: Yi-Wen Tai, Cheng-Hsin Chen
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Publication number: 20100109992Abstract: An active matrix display device having pixels disposed in a matrix is provided. Each pixel is divided into sub-pixels with different areas. The display device includes an inputting portion, multi-bit memories, digital-to-analog conversion circuits, display elements, and a conversion portion. The inputting portion inputs image digital data from outside of the active matrix display device. The multi-bit memories are disposed respectively for the sub-pixels and store input digital data with at least two bits, which serves as gray level information for gray-scale displaying of the sub-pixels. The digital-to-analog conversion circuits convert the input digital data to analog data which is used for the gray-scale displaying. The display elements perform the gray-scale displaying according to the analog data. The conversion portion converts the image digital data to the input digital data according to a predetermined gamma value waiting to be achieved and an area ratio of the sub-pixels.Type: ApplicationFiled: October 20, 2009Publication date: May 6, 2010Applicant: TPO Displays Corp.Inventors: Naoki SUMI, Minoru SHIBAZAKI, Masahiro YOSHIGA
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Patent number: 7710518Abstract: A system for displaying images is disclosed. A display device comprises a first substrate comprising a plurality of pixels, each comprising RGB transparent sub-pixel regions. A second substrate comprises RGB regions opposite the first substrate, wherein the transparent sub-pixel regions respectively correspond to the three major color regions. A light blocking layer is disposed in one of the transparent sub-pixel regions of the first substrate. A photo spacer corresponding to the light blocking layer is formed, supporting the opposite first and second substrates.Type: GrantFiled: December 1, 2006Date of Patent: May 4, 2010Assignee: TPO Displays Corp.Inventors: Hsiao-Yi Lin, Hsiang-Ju Chuang, I-Chun Lai, Szu-Hui Chen, Ya-Chuan Tsai, Chi-Huang Lin
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Patent number: 7687812Abstract: A representative LED array includes: a base substrate (BS) and a plurality of light emitting diodes, each of the light emitting diodes comprising a stack of a first contact layer, a semiconductor stack and a second contact layer, the semiconductor stack being on top of the first contact layer, the second contact layer being on top of the semiconductor stack; the plurality of light emitting diodes being arranged in pixel matrix on the base substrate as LEDs of at least three types (R, G, B); the LEDs according to their type (R, G, B) being arranged as at least a first, second and third sub-pixel in the pixel matrix for emission of radiation of a respective specific at least first, second and third color; and interconnection circuitry on the substrate, operative to connect to the light emitting diodes of the array for addressing each of the light emitting diodes.Type: GrantFiled: June 15, 2007Date of Patent: March 30, 2010Assignee: TPO Displays Corp.Inventors: Hendrik Klaas Louwsma, Pieter Goldhoorn, Hermans Jans
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Patent number: 7683878Abstract: Systems for providing dual resolution control of display panels are provided. A representative system incorporates two pairs of shift registers, each of the shift registers outputting a shifting signal; two pairs of logic gates; and a switching network coupled among the shifting registers and the logic gates. In a low resolution mode, the switching network causes the shift registers to output shifting signals, with corresponding pulses of the shifting signals of the shift registers of the first pair temporally overlapping with corresponding pulses of the shifting signals of the shift registers of the second pair; and wherein, responsive to the shifting signals, the logic gates output panel control signals, with corresponding pulses of the panel control signals of the logic gates of the first pair not temporally overlapping with corresponding pulses of the panel control signals of the logic gates of the second pair.Type: GrantFiled: January 23, 2006Date of Patent: March 23, 2010Assignee: TPO Displays Corp.Inventor: Ping Luo
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Patent number: 7683991Abstract: A system for displaying images is disclosed. A display panel having a multi-domain pixel structure comprises a plurality of electrodes that are physically separated form one another, each defining a domain within pixel, and a capacitance element, electrically connecting the electrodes.Type: GrantFiled: March 29, 2007Date of Patent: March 23, 2010Assignee: TPO Displays Corp.Inventors: Mu-Chia Lee, Hao-Chun Lee, I-Lin Wu, Chun-Yi Lee, Cheng-Hsin Chen
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Patent number: 7683816Abstract: A system for displaying images is provided. A capacitor type digital-to-analog converter is coupled between a first node and a second node and generates a first analog signal according to a digital signal with N bit data. An analogue buffer is coupled between the second node and a third node and generates a second analog signal according to the first analog signal and a bias voltage. A first switch is coupled between a predetermined voltage and the second node. A second switch is coupled between the first node and the third node. A third switch is coupled between the third node and an analog output signal. The second switch is turned on and the third switch is turned off when the first switch is turned on, and the first and second switches are turned off when the third switch is turned on.Type: GrantFiled: August 21, 2008Date of Patent: March 23, 2010Assignee: TPO Displays Corp.Inventor: Cheng-Ho Yu
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Patent number: 7678627Abstract: In a process for producing a TFT display, a polysilicon layer is patterned to define a first and a second TFT regions. A first doping material is implanted into a first exposed portion in the first TFT region to define a first doped region and a first channel region, and implanted into a second exposed portion in the second TFT region to define a second doped region and a second channel region. A second doping material is implanted into a third exposed portion smaller than the first exposed portion to form first source/drain regions and simultaneously define a first LDD region in the first TFT region. A first and a second gate structures are formed over the first and the second channel regions, respectively. In a certain direction, the first gate structure is longer than the first channel, and the second gate structure isn't longer than the second channel region.Type: GrantFiled: May 16, 2006Date of Patent: March 16, 2010Assignee: TPO Display Corp.Inventors: An Shih, Chao-Yu Meng, Wen Yuan Guo
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Patent number: 7679595Abstract: An image sticking prevention circuit for a display. The image sticking prevention circuit comprises a diode, a first capacitor, a transistor, and a second capacitor. The first terminal of the diode is coupled to a first voltage terminal of a voltage converter. The first capacitor has a first terminal coupled to the second terminal of the diode and a second terminal coupled to a first fixed potential. The transistor has a first terminal coupled to the first terminal of the first capacitor, a second terminal coupled to the first terminal of the diode and the first voltage terminal of the voltage converter, and a third terminal coupled to a second voltage terminal of the voltage converter and a gate driver circuit. The second capacitor has a first terminal coupled to the third terminal of the transistor and a second terminal coupled to a second fixed potential.Type: GrantFiled: July 29, 2005Date of Patent: March 16, 2010Assignee: TPO Displays Corp.Inventors: Ping Luo, Chien-Chih Chen
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Publication number: 20100060596Abstract: A display device with touch sensor input has a touch sensor structure on top of the display layer. The touch sensor structure includes a first and second array of electrodes, the electrodes in the first array being non-parallel to the electrodes in the second array. The first and second arrays of electrodes occupy different fractions of a touch sensor area. These asymmetric fill factors give improved sensitivity.Type: ApplicationFiled: April 30, 2009Publication date: March 11, 2010Applicant: TPO Displays Corp.Inventor: Kenneth R. Whight
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Publication number: 20100059313Abstract: A layout structure and a method for reducing audible noise generated by a flexible printed circuit are provided. The layout structure includes a flexible printed circuit and a piezoelectric element. The flexible printed circuit is disposed with respect to an axis. When an alternating voltage/current is applied across the piezoelectric element, the piezoelectric element expands and contracts alternately. The piezoelectric element is located on the flexible printed circuit, and an angle between the axis and a side of the piezoelectric element is less than 90 degrees.Type: ApplicationFiled: September 3, 2009Publication date: March 11, 2010Applicant: TPO Displays Corp.Inventors: Chi-Ming Lee, Yu-Ming Su
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Patent number: 7675352Abstract: Systems and methods for generating reference voltages are provided. A representative system comprises a resistor circuit; a first switch coupled between a first end of the resistor circuit and a first power source; a second switch coupled between the first end of the resistor circuit and a second power source; a third switch coupled to a second end of the resistor circuit; a fourth switch coupled to the second end of the resistor circuit; a first resistor coupled between the first end of the resistor circuit and the first switch; a second resistor coupled between the first end of the resistor circuit and the second switch; a third resistor coupled between the second end of the resistor circuit and the third switch; a fourth resistor coupled between the second end of the resistor circuit and the fourth switch; and a control circuit for controlling the switches.Type: GrantFiled: September 7, 2005Date of Patent: March 9, 2010Assignee: TPO Displays Corp.Inventors: Ching-Wei Lin, Chueh-Kuei Jan, Meng-Hsun Hsieh
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Patent number: 7675498Abstract: Display devices with low power consumption. In the display device, and first and second data lines, first and second gate lines, first and second supplemental lines, first and second pixels are provided. In the first pixel, a first transistor comprises a first terminal coupled to the first data line and a control terminal coupled to the first gate line, and a first storage capacitor comprises a first terminal coupled to the second terminal of the first transistor and a second terminal coupled to the first supplemental line. In the second pixel, a second transistor comprises a first terminal coupled to the second data line, and a control terminal coupled to the second gate line, and a second storage capacitor comprises a first terminal coupled to the second terminal of the second transistor and a second terminal coupled to the second supplemental line.Type: GrantFiled: July 20, 2006Date of Patent: March 9, 2010Assignee: TPO Displays Corp.Inventor: Ksuan-Chun Ku
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Patent number: 7675588Abstract: A system for displaying images includes a liquid crystal display panel. The liquid crystal display panel comprises a color filter substrate having a light shielding layer on a peripheral area and a common electrode on a display area and the peripheral area, and an array substrate having a pixel electrode on the display area and a separate and independent electrode with a fixed voltage on the peripheral area. The liquid crystal display panel further comprises a liquid crystal layer between the color filter substrate and the array substrate.Type: GrantFiled: November 27, 2007Date of Patent: March 9, 2010Assignee: TPO Displays Corp.Inventors: Chi-Mo Ko, Chao-Yin Lin, Ching-Yu Chang, Li-Sen Chuang, Chia-Ching Chu