Patents by Inventor Chao-Song Chang
Chao-Song Chang 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: 8259242Abstract: A stereoscopic display device is disclosed. The stereoscopic display device includes a backlight module, a first liquid crystal display panel, a first polarizer, a second liquid crystal display panel, a second polarizer, and a detachable polarizer. The backlight module has a light emitting side. The first polarizer, the first liquid crystal display panel, the detachable polarizer, the second liquid crystal display panel, and the second polarizer are disposed sequentially from the light emitting side. The detachable polarizer is detachably inserted. By designing arrangements of the first polarizer, the second polarizer, and the detachable polarizer, and by limiting the pixel scale relationship between the first liquid crystal display panel and the second liquid crystal display panel, various types of stereoscopic display technologies can be implemented according to the present invention.Type: GrantFiled: April 17, 2010Date of Patent: September 4, 2012Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Chao-song Chang, Chen-chi Lin
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Publication number: 20110242449Abstract: A liquid crystal display device includes a white light source, a liquid crystal display panel, and an electrochromic unit. The white light source has a light exiting plane, and the liquid crystal display panel is disposed on the light exiting plane of the white light source. Additionally, the electrochromic unit is disposed on the light exiting plane of the white light source, wherein the electrochromic unit displays different colors in sequence.Type: ApplicationFiled: May 20, 2010Publication date: October 6, 2011Inventor: Chao-Song Chang
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Publication number: 20110176073Abstract: A stereoscopic display device is disclosed. The stereoscopic display device includes a backlight module, a first liquid crystal display panel, a first polarizer, a second liquid crystal display panel, a second polarizer, and a detachable polarizer. The backlight module has a light emitting side. The first polarizer, the first liquid crystal display panel, the detachable polarizer, the second liquid crystal display panel, and the second polarizer are disposed sequentially from the light emitting side. The detachable polarizer is detachably inserted. By designing arrangements of the first polarizer, the second polarizer, and the detachable polarizer, and by limiting the pixel scale relationship between the first liquid crystal display panel and the second liquid crystal display panel, various types of stereoscopic display technologies can be implemented according to the present invention.Type: ApplicationFiled: April 17, 2010Publication date: July 21, 2011Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Chao-song Chang, Chen-chi Lin
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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: 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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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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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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Patent number: 5669716Abstract: A new ball circulating system for a linear ball bearing that greatly simplifies the manufacturing process of the ball bearing. The linear ball bearing includes an outer sleeve, a ball retainer, several ball tracks and two snap rings. Each ball track includes a linear loaded ball groove and a linear unloaded ball groove, and two semi-circular ball turning grooves which allow the steel balls to turn 180 degrees between the two linear ball grooves. The turning grooves include two-stage depth variations to simplify the geometry of the inner surface of the outer sleeve, to provide better manufacturability, and to increase the bearing's overall strength and longevity.Type: GrantFiled: January 11, 1996Date of Patent: September 23, 1997Assignee: Hiwin Technologies CorporationInventor: Chao Song Chang