Patents by Inventor Cheng-Chung Hu
Cheng-Chung Hu 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: 8570483Abstract: A liquid crystal lens including a first substrate, a first electrode layer, a liquid crystal layer and a second electrode layer is provided. The second electrode layer includes a plurality of first electrode patterns and a plurality of second electrode patterns. The second electrode patterns are opposite to the first electrode patterns, respectively, and the second electrode patterns and the first electrode patterns are alternately arranged. A square measure of first or second electrode patterns decreases from an edge of the liquid crystal lens to a center of the liquid crystal lens, so that a resistance of the first or second electrode patterns increases from the edge to the center of the liquid crystal lens.Type: GrantFiled: May 27, 2010Date of Patent: October 29, 2013Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Sheng-Chi Liu, Cheng-Chung Hu
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Patent number: 8416354Abstract: The present invention discloses a display apparatus with display switching modes, the display apparatus includes a display device; an image mode switch device formed corresponding to the display device, wherein the image mode switch device includes: a liquid crystal layer; a first electrode set on a side of the liquid crystal layer; a second electrode set between the first electrode and the liquid crystal layer; a third electrode set on another side of the liquid crystal layer; and a voltage providing device electrically coupled to the image mode switch device to supply different voltage to the first electrode, the second electrode and the third electrode for switching displaying mode; the display apparatus may display the 2D, 3D and IP stereo image by using the electrodes with different pattern and voltage on the first electrode, the second electrode and the third electrode.Type: GrantFiled: August 6, 2010Date of Patent: April 9, 2013Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Sheng-Chi Liu, Cheng-Chung Hu
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Patent number: 8189181Abstract: A method and a system of evaluating a stereo image displaying panel are provided. The evaluation method includes the following steps. An inspection frame is displayed on the stereo image displaying panel, wherein the displaying surface of the stereo image displaying panel has a first normal vector. A luminance of the inspection frame is sensed by an image sensing apparatus, wherein the sensing surface of the image sensing apparatus has a second normal vector. An angle is formed between the first normal vector and the second normal vector. The luminance of the inspection frame is sensed in different angles. A maximum luminance of the inspection frame is sensed by the image sensing apparatus when the angle is equal to a first angle. A luminance uniformity of the inspection frame is analyzed at the first angle. An optimized viewable distance is measured, and the degree of cross-talk is calculated.Type: GrantFiled: August 28, 2009Date of Patent: May 29, 2012Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Yen-Chi Liu, Cheng-Chung Hu
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Publication number: 20110285953Abstract: The present invention discloses a display apparatus with display switching mode, the display apparatus includes a display device; an image mode switch device formed corresponding to the display device, wherein the image mode switch device includes: a liquid crystal layer; a first electrode set on a side of the liquid crystal layer; a second electrode set between the first electrode and the liquid crystal layer; a third electrode set on another side of the liquid crystal layer; and a voltage providing device electrically coupled to the image mode switch device to supply different voltage to the first electrode, the second electrode and the third electrode for switching displaying mode; the display apparatus may display the 2D, 3D and IP stereo image by using the electrodes with different pattern and voltage with different voltage on the first electrode, the second electrode and the third electrode.Type: ApplicationFiled: August 6, 2010Publication date: November 24, 2011Inventors: Sheng-Chi LIU, Cheng-Chung Hu
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Publication number: 20110249206Abstract: A liquid crystal lens including a first substrate, a first electrode layer, a liquid crystal layer and a second electrode layer is provided. The second electrode layer includes a plurality of first electrode patterns and a plurality of second electrode patterns. The second electrode patterns are opposite to the first electrode patterns, respectively, and the second electrode patterns and the first electrode patterns are alternately arranged. A square measure of first or second electrode patterns decreases from an edge of the liquid crystal lens to a center of the liquid crystal lens, so that a resistance of the first or second electrode patterns increases from the edge to the center of the liquid crystal lens.Type: ApplicationFiled: May 27, 2010Publication date: October 13, 2011Applicant: Chunghwa Picture Tubes, LTD.Inventors: Sheng-Chi Liu, Cheng-Chung Hu
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Publication number: 20110242011Abstract: A touch input device includes a substrate and a plurality of touch-sensing strips. The substrate has a flat surface. The touch-sensing strips are all disposed side by side on the flat surface. Each touch-sensing strip includes a plurality of sensing electrodes electrically connected to one another in series. Each sensing electrode has a top surface, and the areas of the top surfaces in at least two sensing electrodes of each touch-sensing strip are not equal to each other.Type: ApplicationFiled: July 14, 2010Publication date: October 6, 2011Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Chun-Wei Wu, Yu-Ping Ho, Cheng-Chung Hu, Long-Cai Jhuo, Jyun-Cheng Lin
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Patent number: 7961260Abstract: The present invention discloses a stereoscopic display device with a parallax barrier. The parallax barrier includes: a first substrate; a plurality of first electrodes parallel to each other and stretching in one direction on the first substrate; a transparent insulation layer between the first substrate and the first electrodes; a plurality of second electrodes parallel to each other and stretching in one direction on the opposite side against the first electrodes; a common electrode between the second substrate and the transparent insulation layer; and a liquid crystal layer between the common electrode and the second electrodes. In particular, the plurality of first electrodes and second electrodes interlace with each other and each contains partial overlapping in the vertical direction.Type: GrantFiled: January 21, 2009Date of Patent: June 14, 2011Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Chiu-Jung Huang, Cheng-Chung Hu
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Patent number: 7868975Abstract: A color filter substrate having a substrate, a black matrix layer, a first filter layer and a second filter layer is provided. The black matrix layer is disposed on the substrate, and multiple pixel areas is defined on the substrate by the black matrix layer. Each pixel area includes a first sub-pixel area and a second sub-pixel area. The first and second filter layer are disposed in the pixel area, and the second filter layer covers the first filter layer. A refractive index of the second filter layer is greater than that of the first filter layer, such that light emitting direction of the first sub-pixel area is different from that of the second sub-pixel area. Besides, a fabricating method of the color filter substrate and an LCD panel with the color filter substrate are provided. The LCD panel with 3D image display or dual-view function can be easily manufactured.Type: GrantFiled: August 7, 2008Date of Patent: January 11, 2011Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Chun-Wei Wu, Cheng-Chung Hu, Chiu-Jung Huang, Chao-Song Chang, Huan-Ting Li
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Publication number: 20100328653Abstract: A method and a system of evaluating a stereo image displaying panel are provided. The evaluation method includes the following steps. An inspection frame is displayed on the stereo image displaying panel, wherein the displaying surface of the stereo image displaying panel has a first normal vector. A luminance of the inspection frame is sensed by an image sensing apparatus, wherein the sensing surface of the image sensing apparatus has a second normal vector. An angle is formed between the first normal vector and the second normal vector. The luminance of the inspection frame is sensed in different angles. A maximum luminance of the inspection frame is sensed by the image sensing apparatus when the angle is equal to a first angle. A luminance uniformity of the inspection frame is analyzed at the first angle. An optimized viewable distance is measured, and the degree of cross-talk is calculated.Type: ApplicationFiled: August 28, 2009Publication date: December 30, 2010Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Yen-Chi Liu, Cheng-Chung Hu
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Publication number: 20100253875Abstract: A position tuning structure is disclosed, which comprises a holding tube having a side hole extending through the wall of the holding tube; a nut locating in the holding tube and connecting to the side hole; a tuning element threadedly engaged in the nut; an elastic rod locating in the holding tube and pushed by the tuning element; a supporting element locating in the holding tube and pushed by the elastic rod; and an elastic element locating in the holding tube and connecting to the supporting element. Also, an adjustable optical film device comprising the above position tuning structure is disclosed.Type: ApplicationFiled: December 22, 2009Publication date: October 7, 2010Applicant: Chunghwa Picture Tubes, Ltd.Inventors: Cheng-Chung Hu, Hung-Jen Chu, Long-Cai Jhuo
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Publication number: 20100238366Abstract: The present invention discloses a method to display a depth fused display. The method includes the following steps. First, a depth fused display that includes a first panel and a second panel is provided. The first panel can display a first image, the second panel can display a second image, and the two panels are disposed in parallel and opposite to each other. Then, the view angle signal of an observer is detected, and the relative position of the first image and the second image is adjusted according to the view angle signal of the observer such that the observer may perceive a stereoscopic image.Type: ApplicationFiled: July 20, 2009Publication date: September 23, 2010Inventors: Chao-Song Chang, Cheng-Chung Hu
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Publication number: 20100149176Abstract: A Depth-Fused 3D (DFD) display, a driving method thereof and a driving circuit thereof are provided. The driving method includes the steps listed below. During a first frame time, a foreground image signal is provided to a front panel and a first uniform image signal is provided to a rear panel. During a second frame time, a background image signal is provided to the rear panel and a second uniform image signal is provided to the front panel.Type: ApplicationFiled: March 18, 2009Publication date: June 17, 2010Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Chao-Song Chang, Cheng-Chung Hu
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Publication number: 20100110316Abstract: The present invention discloses a stereoscopic display device with a parallax barrier. The parallax barrier includes: a first substrate; a plurality of first electrodes parallel to each other and stretching in one direction on the first substrate; a transparent insulation layer between the first substrate and the first electrodes; a plurality of second electrodes parallel to each other and stretching in one direction on the opposite side against the first electrodes; a common electrode between the second substrate and the transparent insulation layer; and a liquid crystal layer between the common electrode and the second electrodes. In particular, the plurality of first electrodes and second electrodes interlace with each other and each contains partial overlapping in the vertical direction.Type: ApplicationFiled: January 21, 2009Publication date: May 6, 2010Inventors: Chiu-Jung Huang, Cheng-Chung Hu
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Patent number: 7639360Abstract: An examining device adapted to examining a transmittance of a display panel is provided. The examining device includes a light source, a first polarizer, a photodetector, a second polarizer, at least one first reflector and at least one second reflector. The light source and the photodetector are respectively disposed on both sides of the display panel. The second polarizer is disposed between the display panel and the photodetector. The first reflector is disposed between the display panel and the second polarizer. The second reflector is disposed between the display panel and the first polarizer. Light emitting from the light source successively passes via the first polarizer, the display panel, the first reflector, the display panel, the second reflector, the display panel, the second polarizer and then emits into the photodetector.Type: GrantFiled: September 4, 2008Date of Patent: December 29, 2009Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Chun-Wei Wu, Cheng-Chung Hu, Chiu-Jung Huang, Chao-Song Chang, Huan-Ting Li
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Patent number: 7567316Abstract: A backlight module of a liquid crystal display is provided. The backlight module includes a back cover, an optical plate, at least one light source, a mold frame and at least one optical film. The optical plate is disposed on the back cover and the light source is disposed adjacent to the optical plate. The mold frame surrounding the back cover has a protruding structure. The protruding structure is located between a light outlet surface of the optical plate and a front frame of the mold frame to form a recess, so that the optical film can be disposed in the recess. The present invention also discloses a liquid crystal module including a backlight module and a liquid crystal panel. The liquid crystal panel is disposed on a mold frame of the backlight module.Type: GrantFiled: December 21, 2006Date of Patent: July 28, 2009Assignee: Chunghwa Picture Tubes, Ltd.Inventor: Cheng-Chung Hu
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Publication number: 20090168065Abstract: An examining device adapted to examining a transmittance of a display panel is provided. The examining device includes a light source, a first polarizer, a photodetector, a second polarizer, at least one first reflector and at least one second reflector. The light source and the photodetector are respectively disposed on both sides of the display panel. The second polarizer is disposed between the display panel and the photodetector. The first reflector is disposed between the display panel and the second polarizer. The second reflector is disposed between the display panel and the first polarizer. Light emitting from the light source successively passes via the first polarizer, the display panel, the first reflector, the display panel, the second reflector, the display panel, the second polarizer and then emits into the photodetector.Type: ApplicationFiled: September 4, 2008Publication date: July 2, 2009Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Chun-Wei Wu, Cheng-Chung Hu, Chiu-Jung Huang, Chao-Song Chang, Huan-Ting Li
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Publication number: 20090103019Abstract: A color filter substrate having a substrate, a black matrix layer, a first filter layer and a second filter layer is provided. The black matrix layer is disposed on the substrate, and multiple pixel areas is defined on the substrate by the black matrix layer. Each pixel area includes a first sub-pixel area and a second sub-pixel area. The first and second filter layer are disposed in the pixel area, and the second filter layer covers the first filter layer. A refractive index of the second filter layer is greater than that of the first filter layer, such that light emitting direction of the first sub-pixel area is different from that of the second sub-pixel area. Besides, a fabricating method of the color filter substrate and an LCD panel with the color filter substrate are provided. The LCD panel with 3D image display or dual-view function can be easily manufactured.Type: ApplicationFiled: August 7, 2008Publication date: April 23, 2009Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Chun-Wei Wu, Cheng-Chung Hu, Chiu-Jung Huang, Chao-Song Chang, Huan-Ting Li
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Publication number: 20080284952Abstract: A liquid crystal display (LCD) panel and module is provided. The LCD panel includes a thin film transistor (TFT) array substrate, a color filter substrate, a liquid crystal layer, an upper polarizing plate and a lower polarizing plate. The color filter substrate is disposed over the TFT array substrate, and the liquid crystal layer is disposed between the TFT array substrate and the color filter substrate. In addition, the upper polarizing plate is disposed over the color filter substrate. Moreover, the lower polarizing plate is disposed over the TFT array substrate, and the lower polarizing plate includes, for example, a polarizer and a light scattering layer disposed over a surface of the polarizer.Type: ApplicationFiled: June 26, 2008Publication date: November 20, 2008Applicant: Chunghwa Picture Tubes, LTD.Inventors: Cheng-Chung Hu, Hsien-Chang Hsiao
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Patent number: 7411641Abstract: A liquid crystal display (LCD) panel and module is provided. The LCD panel comprises a thin film transistor (TFT) array substrate, a color filter substrate, a liquid crystal layer, an upper polarizing plate and a lower polarizing plate. The color filter substrate is disposed over the TFT array substrate, and the liquid crystal layer is disposed between the TFT array substrate and the color filter substrate. In addition, the upper polarizing plate is disposed over the color filter substrate. Moreover, the lower polarizing plate is disposed over the TFT array substrate, and the lower polarizing plate includes, for example, a polarizer and a light scattering layer disposed over a surface of the polarizer.Type: GrantFiled: November 9, 2004Date of Patent: August 12, 2008Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Cheng-Chung Hu, Hsien-Chang Hsiao
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Publication number: 20070222910Abstract: A backlight module of a liquid crystal display is provided. The backlight module includes a back cover, an optical plate, at least one light source, a mold frame and at least one optical film. The optical plate is disposed on the back cover and the light source is disposed adjacent to the optical plate. The mold frame surrounding the back cover has a protruding structure. The protruding structure is located between a light outlet surface of the optical plate and a front frame of the mold frame to form a recess, so that the optical film can be disposed in the recess. The present invention also discloses a liquid crystal module including a backlight module and a liquid crystal panel. The liquid crystal panel is disposed on a mold frame of the backlight module.Type: ApplicationFiled: December 21, 2006Publication date: September 27, 2007Inventor: Cheng-Chung Hu