Patents by Inventor Li-Sen Chuang
Li-Sen Chuang 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: 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
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Patent number: 7616278Abstract: Systems for displaying images are provided. A representative system comprises a wide viewing angle liquid crystal display with multi-film compensation. A liquid crystal display comprising a first substrate, a second substrate, and a liquid crystal layer sandwiched between the first substrate and the second substrate. A first compensation film is interposed between the first polarizer and the first substrate. A second compensation film interposed between the second polarizer and the second substrate. The first compensation film and the second compensation film comprise different birefringence polarities.Type: GrantFiled: December 5, 2005Date of Patent: November 10, 2009Assignee: TPO Displays Corp.Inventors: Chia-Yi Tsai, Li-Sen Chuang, Yih-Jun Wong
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Patent number: 7576724Abstract: A liquid crystal display device and an electronic device, which provide compensation for the difference of brightness caused by the LC effect to improve the image color fidelity is provided. The present invention provides a source driving method for a LCD device including providing data signals representing images to be displayed at a plurality of sub-pixels corresponding to different display wavelengths within a pixel and sequentially activating the sub-pixels within the pixel, in the order from a sub-pixel corresponding to the shortest display wavelength to a sub-pixel corresponding to longest display wavelength.Type: GrantFiled: August 8, 2005Date of Patent: August 18, 2009Assignee: TPO Displays Corp.Inventors: Ching-Yao Lin, Chung-Wen Lai, Norio Oku, Li-Sen Chuang
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Patent number: 7397484Abstract: A method of displaying an image including receiving a plurality of corresponding to an image data, wherein each of the plurality of frames includes a plurality of color sub-frames; sequentially displaying the color sub-frames corresponding to a first frame in a first color sequence over time; and displaying the sub-frames corresponding to a second frame following the first frame in a second color sequence over time, wherein the first color sequence is different from the second color sequence.Type: GrantFiled: January 11, 2005Date of Patent: July 8, 2008Assignee: TPO Displays Corp.Inventors: Wei-Chih Chang, Li-Sen Chuang, Dai-Liang Ting
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Publication number: 20080123029Abstract: 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: ApplicationFiled: November 27, 2007Publication date: May 29, 2008Applicant: TPO Displays Corp.Inventors: Chi-Mo Ko, Chao-Yin Lin, Ching-Yu Chang, Li-Sen Chuang, Chia-Ching Chu
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Patent number: 7339640Abstract: A transflective liquid crystal display device having one or more substrates is provided. A light emitting device is disposed at an edge of one of the substrates, such as the lower substrate. An insulating layer is disposed on the lower substrate and is formed with a plurality of notches. Each notch has a first angled sidewall and a second angled sidewall. The second angled sidewall has an included angle from horizontal. A first reflective layer may also be provided on top of the insulating layer and extend onto the second angled sidewall. The first reflective layer on the second angled sidewall faces the light emitting device and may assist in reflecting light from the light emitting device.Type: GrantFiled: January 14, 2005Date of Patent: March 4, 2008Assignee: TPO Display Corp.Inventors: Wei-Chih Chang, Li-Sen Chuang
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Patent number: 7289175Abstract: A transflective liquid crystal display comprising an active device array substrate, a facing substrate, a liquid crystal layer and a reflector. The liquid crystal molecules in the transparent area are driven by a potential between the transparent pixel electrode and the common electrode. The liquid crystal molecules in the reflective area are driven by a potential between the transparent pixel electrode and the active device array substrate or the auxiliary electrode on the facing substrate. Under the condition of a single cell gap, the electric field applied to the transparent area and the reflective area can control the change in effective phase so as to optimize the performance.Type: GrantFiled: March 8, 2005Date of Patent: October 30, 2007Assignee: TPO Displays Corp.Inventor: Li-Sen Chuang
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Publication number: 20070206140Abstract: An LCD panel having a novel substrate structure, which has optical characteristics that extend the range of horizontal viewing angles with improved contrast ratio, and that extend range of vertical viewing angles with reduced grayscale inversion effect. In one aspect, the substrate structure includes an alignment layer provided with a plurality of first alignment grooves that are aligned at an angle close to an axis parallel to one edge of the display area. The angle may be 0° or ranges from +20° to ?20° relative to the edge of the display area. The LCD panel comprises two opposing substrate structures, with the alignment grooves orthogonal to each other.Type: ApplicationFiled: March 3, 2006Publication date: September 6, 2007Inventors: Dai-Liang Ting, Li-Sen Chuang
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Patent number: 7239365Abstract: An array substrate for a transflective liquid crystal display device is disclosed. The array substrate includes a substrate; a plurality of scanning lines and data lines on the substrate, crossing each other to define a plurality of pixel regions; a transmissive electrode disposed in the transmission region; and a reflector disposed in the reflection region and not subjected to a voltage. A lateral field is generated in the reflection region. The transflective LCD of the present invention achieves the maximum light efficiency in both reflection and transmission modes.Type: GrantFiled: November 9, 2004Date of Patent: July 3, 2007Assignee: TPO Displays Corp.Inventors: Wei-Chih Chang, Li-Sen Chuang
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Publication number: 20070146590Abstract: Systems for displaying images are provided. A representative system comprises a transflective liquid crystal display panel. The display panel comprises a liquid crystal display element and a retro-reflector disposed at the bottom of the liquid crystal display element such that an incident ray of light incident upon the retro-reflector is internally reflected twice such that the ray is redirected as a reflected ray that travels substantially parallel to the incident ray yet in an opposing direction.Type: ApplicationFiled: December 28, 2005Publication date: June 28, 2007Inventors: Wei-Chih Chang, Li-Sen Chuang
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Publication number: 20070126961Abstract: Systems for displaying images are provided. A representative system comprises a wide viewing angle liquid crystal display with multi-film compensation. A liquid crystal display comprising a first substrate, a second substrate, and a liquid crystal layer sandwiched between the first substrate and the second substrate. A first compensation film is interposed between the first polarizer and the first substrate. A second compensation film interposed between the second polarizer and the second substrate. The first compensation film and the second compensation film comprise different birefringence polarities.Type: ApplicationFiled: December 5, 2005Publication date: June 7, 2007Inventors: Chia-Yi Tsai, Li-Sen Chuang, Yih-Jun Wong
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Publication number: 20070109472Abstract: A thin film transistor array substrate including a substrate, a plurality of scan lines disposed on the substrate, a plurality of data lines disposed on the substrate, a first pixel rows disposed on the substrate and a second pixel group disposed on the substrate is provided. The first pixel group has a first reflective region and a first transmissive region. The second pixel group has a second transmissive region and a second reflective region, the first pixel group and the second pixel group are controlled by the scan lines and the data lines and arranged alternatively along a column direction, wherein the first transmissive region is contiguous to the second transmissive region.Type: ApplicationFiled: November 17, 2005Publication date: May 17, 2007Inventors: Li-Sen Chuang, Wei-Chih Chang
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Patent number: 7180560Abstract: A transflective liquid crystal display has a plurality of pixel electrode layers corresponding to a plurality of color elements. A first pixel electrode layer has a first reflective region and a first transmissive region. A second pixel electrode layer has a second reflective region and a second transmissive region. A third pixel electrode layer has a third reflective region and a third transmissive region. The first reflective region is larger than the second reflective region, and the first reflective region is larger than the third reflective region.Type: GrantFiled: October 12, 2004Date of Patent: February 20, 2007Assignee: TPO Displays Corp.Inventors: Li-Sen Chuang, Wei-Chih Chang, Chia-Yi Tsai, Chi-Jain Wen
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Publication number: 20070030238Abstract: A liquid crystal display device and an electronic device, which provide compensation for the difference of brightness caused by the LC effect to improve the image color fidelity is provided. The present invention provides a source driving method for a LCD device including providing data signals representing images to be displayed at a plurality of sub-pixels corresponding to different display wavelengths within a pixel and sequentially activating the sub-pixels within the pixel, in the order from a sub-pixel corresponding to the shortest display wavelength to a sub-pixel corresponding to longest display wavelength.Type: ApplicationFiled: August 8, 2005Publication date: February 8, 2007Inventors: Ching-Yao Lin, Chung-Wen Lai, Norio Oku, Li-Sen Chuang
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Publication number: 20070030237Abstract: A source driving method and a source driver for a liquid crystal display device having a plurality of pixels, wherein each pixel comprises a first color sub-pixel with a first displaying wavelength, a second color sub-pixel with a second displaying wavelength less than the first displaying wavelength, and a third color sub-pixel with a third displaying wavelength less than the second displaying wavelength are provided. First, a digital data is received. Then, a digital to analog process is performed to convert the digital data into an analog data. Next, the analog data is sequentially selected and output to the first color sub-pixel, the second color sub-pixel, and then the third color sub-pixel of the selected pixel. The source driving method can improve the image color fidelity of the liquid crystal display device.Type: ApplicationFiled: August 8, 2005Publication date: February 8, 2007Inventors: Tzung-Hsien Chen, Yih-Jun Wong, Chien-Cheng Yu, Ching-Yao Lin, Norio Oku, Li-Sen Chuang
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Publication number: 20060170849Abstract: A transflective LCD panel is disclosed. It uses a backlight structure of a transmissive LCD panel. Polarizers with compensation films are added to the top and bottom of the LCD panel. Through appropriate rotations of the liquid crystal materials and the angle between the compensation film polarization direction and the polarizer, the display panel of the transmissive LCD can also achieve reflection effects.Type: ApplicationFiled: January 28, 2005Publication date: August 3, 2006Inventor: Li-Sen Chuang
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Publication number: 20060152534Abstract: A method of displaying an image including receiving a plurality of corresponding to an image data, wherein each of the plurality of frames includes a plurality of color sub-frames; sequentially displaying the color sub-frames corresponding to a first frame in a first color sequence over time; and displaying the sub-frames corresponding to a second frame following the first frame in a second color sequence over time, wherein the first color sequence is different from the second color sequence.Type: ApplicationFiled: January 11, 2005Publication date: July 13, 2006Inventors: Wei-Chih Chang, Li-Sen Chuang, Dai-Liang Ting
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Publication number: 20060139527Abstract: A method of displaying balanced chromatic images for a liquid crystal display (LCD) device with a transmissive display mode and a reflective display mode. The LCD device generates an output image in the transmissive mode with a first white output signal Wo, whereby the brightness increases of red, green and blue, the saturations of which are not decreased from an input image. The LCD device generates an output image in the reflective mode with a second white output signal Wo?, whereby the brightness increases of red, green and blue, the hues of which are not decreased from an input image, but the saturations of which decrease. The first white output signal Wo in the transmissive mode is different from the second white output signal Wo? in the reflective mode.Type: ApplicationFiled: December 23, 2005Publication date: June 29, 2006Inventors: Wei-Chih Chang, Li-Sen Chuang, Dai-Liang Ting
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Publication number: 20060139522Abstract: A four color transflective liquid crystal display device is disclosed. Each main pixel area includes three primary color sub-pixel areas and a white sub-pixel area. Each primary color sub-pixel area includes a first transmissive portion and a first reflective portion. The white sub-pixel area includes a second reflective portion and a second transmissive portion. The second reflection reflects a substantively white light to raise display brightness in the reflective mode. Thus, the chromaticity of the reflective mode approaches that of the transmissive mode.Type: ApplicationFiled: December 27, 2004Publication date: June 29, 2006Inventors: Wei-Chih Chang, Li-Sen Chuang, Dai-Liang Ting
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Publication number: 20060098144Abstract: An array substrate for a transflective liquid crystal display device is disclosed. The array substrate includes a substrate; a plurality of scanning lines and data lines on the substrate, crossing each other to define a plurality of pixel regions; a transmissive electrode disposed in the transmission region; and a reflector disposed in the reflection region and not subjected to a voltage. A lateral field is generated in the reflection region. The transflective LCD of the present invention achieves the maximum light efficiency in both reflection and transmission modes.Type: ApplicationFiled: November 9, 2004Publication date: May 11, 2006Inventors: Wei-Chih Chang, Li-Sen Chuang