Patents by Inventor Jyh-Haur Huang
Jyh-Haur Huang 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: 7671542Abstract: The present invention relates to a light emitting diode (LED) backlight having a plurality of LED strips, in which driving current supplied to each of the plurality of LED strips is adjusted according to measured differences in chromaticity coordinates between the actual light chromaticity and brightness output by each LED strip and a desired light chromaticity and brightness of each LED so that the LED backlight generates light of a desired color with a uniform brightness, and methods of operating the same.Type: GrantFiled: November 7, 2007Date of Patent: March 2, 2010Assignee: AU Optronics CorporationInventors: Ya-Hsien Chang, Jyh-Haur Huang
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Publication number: 20090116232Abstract: The present invention relates to a light emitting diode (LED) backlight having a plurality of LED strips, in which driving current supplied to each of the plurality of LED strips is adjusted according to measured differences in chromaticity coordinates between the actual light chromaticity and brightness output by each LED strip and a desired light chromaticity and brightness of each LED so that the LED backlight generates light of a desired color with a uniform brightness, and methods of operating the same.Type: ApplicationFiled: November 7, 2007Publication date: May 7, 2009Applicant: AU Optronics CorporationInventors: Ya-Hsien Chang, Jyh-Haur Huang
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Patent number: 7507009Abstract: A light guide plate structure, for use with a back light module of a liquid crystal display, has a top surface, a bottom surface, a first end portion, a second end portion which is opposite the first end portion, and a plurality of substantially paralleled V-shape grooves formed on the bottom surface and extending from the first end portion to the second end portion. Each of said V-shape grooves comprises a top angle with a continuous variation from the first end portion to the second end portion. The present invention gets rid of the dark areas of an LCD that appear adjacent to one of the end portions in conventional models, thus enhancing the uniformity in its brightness levels.Type: GrantFiled: July 7, 2006Date of Patent: March 24, 2009Assignee: AU Optronics Corp.Inventors: Ko-Chia Kao, Jing-Huan Liao, Chih-Kuang Chen, Jyh-Haur Huang
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Patent number: 7470046Abstract: A backlight module and an illumination device thereof. The illumination device of the backlight module comprises a light source and a lens, disposed over the light source with a predetermined gap therebetween. The lens comprises a bottom surface as an incident surface, a pair of upper refracting surfaces, and a pair of lateral refracting surfaces. The upper refracting surfaces form an included angle substantially in a range of about 80° to about 120°.Type: GrantFiled: July 6, 2005Date of Patent: December 30, 2008Assignee: AU Optronics Corp.Inventors: Ko-Chia Kao, Chih-Kuang Cheng, Jyh-Haur Huang, Jing-Huan Liao
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Patent number: 7411732Abstract: A backlight module includes a light source, a light guide disposed on one side of the light source, a reflector disposed under the light guide, a lower diffuser disposed on the light guide, and a brightness enhancement film, which is disposed on the lower diffuser and includes a main part and several prism structures disposed side by side on a main part plane of the main part. Each prism structure includes first to third triangular prisms. The second triangular prism is adjacent to one side of the first triangular prism, and an adjacent angle adjacent to a base angle of the first triangular prism is a right angle. The third triangular prism is adjacent to another side of the first triangular prism, and an adjacent angle adjacent to another base angle of the first triangular prism is a right angle.Type: GrantFiled: April 17, 2007Date of Patent: August 12, 2008Assignee: Au Optronics Corp.Inventors: Ko-Chia Kao, Chih-Kuang Chen, Jyh-Haur Huang
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Patent number: 7377678Abstract: A backlight module including a diffuser, a reflector, a side light source, a prism lens and a TIR (total internal reflection) lens is disclosed. The reflector is disposed under the diffuser. The side light source is disposed on a side between the diffuser and the reflector. The prism lens is disposed between the side light source and the reflector. The TIR lens is disposed on a bottom of the diffuser and adjacent to the side light source.Type: GrantFiled: May 27, 2005Date of Patent: May 27, 2008Assignee: AU Optronics Corp.Inventors: Jyh-Haur Huang, Chih-Kuang Chen, Ko-Chia Kao
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Patent number: 7354179Abstract: A prism unit includes a first prism having a first incident face and a first refraction face that is adjacent to and that cooperates with the first incident face to define a first angle ranging 50° to 70°, a second prism having a second incident face that is generally parallel to the first refraction face and a medium layer sandwiched between the first refraction face and the second incident face, and having a refractive index smaller than that of the first and second prisms.Type: GrantFiled: April 11, 2006Date of Patent: April 8, 2008Assignee: AU Optronics Corp.Inventors: Jyh-Haur Huang, Jing-Huan Liao, Ming-Fa Wang, Chih-Kuang Chen
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Patent number: 7317288Abstract: The present invention uses different frequencies to drive the LED strips in the back-lighting source so that the spatial uniformity of the back-lighting source as well as the color levels in the source can be monitored and adjusted. Each individual strip is assigned to a different frequency. Alternatively, the strips are divided into groups and each group is assigned to a different frequency. A group may comprise two or more strips. Furthermore, some groups may have more strips than the other groups and the number of LEDs in one strip may be different from the number in other strips. The brightness uniformity and the color levels in the back-lighting source are sensed by one or more groups of color sensors in R, G and B. The assignment of driving frequencies can be based on the location of the strips.Type: GrantFiled: September 2, 2005Date of Patent: January 8, 2008Assignee: Au Optronics CorporationInventors: Hsin-Wu Lin, Jen-Chi Liu, Jyh-Haur Huang
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Publication number: 20070295972Abstract: A light emitting diode module is disclosed. The light emitting diode module includes a substrate, a plurality of light emitting diodes, and a plurality of lenses. The light emitting diodes are disposed on the substrate, and the lenses are disposed on the substrate and covering the light emitting diodes, in which each of the lenses includes a curved surface corresponding to each of the light emitting diodes.Type: ApplicationFiled: September 27, 2006Publication date: December 27, 2007Inventors: Shau-Yu Tsai, Chih-Lin Wang, Jyh-Haur Huang, Ci-Guang Peng
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Patent number: 7262916Abstract: A backlight module includes a light source, a light guide disposed on one side of the light source, a reflector disposed under the light guide, a lower diffuser disposed on the light guide, and a brightness enhancement film, which is disposed on the lower diffuser and includes a main part and several prism structures disposed side by side on a main part plane of the main part. Each prism structure includes first to third triangular prisms. The second triangular prism is adjacent to one side of the first triangular prism, and an adjacent angle adjacent to a base angle of the first triangular prism is a right angle. The third triangular prism is adjacent to another side of the first triangular prism, and an adjacent angle adjacent to another base angle of the first triangular prism is a right angle.Type: GrantFiled: July 8, 2005Date of Patent: August 28, 2007Assignee: AU Optronicscorp.Inventors: Ko-Chia Kao, Chih-Kuang Chen, Jyh-Haur Huang
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Publication number: 20070188872Abstract: A backlight module includes a light source, a light guide disposed on one side of the light source, a reflector disposed under the light guide, a lower diffuser disposed on the light guide, and a brightness enhancement film, which is disposed on the lower diffuser and includes a main part and several prism structures disposed side by side on a main part plane of the main part. Each prism structure includes first to third triangular prisms. The second triangular prism is adjacent to one side of the first triangular prism, and an adjacent angle adjacent to a base angle of the first triangular prism is a right angle. The third triangular prism is adjacent to another side of the first triangular prism, and an adjacent angle adjacent to another base angle of the first triangular prism is a right angle.Type: ApplicationFiled: April 17, 2007Publication date: August 16, 2007Applicant: AU OPTRONICS CORP.Inventors: Ko-Chia Kao, Chih-Kuang Chen, Jyh-Haur Huang
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Patent number: 7252424Abstract: The provided backlight module includes a reflection sheet, a retardation plate, a light-guide plate, a light source, and a sub-wavelength grating plate. The retardation plate is set over the reflection sheet. The light-guide plate is disposed over the retardation plate, and the surface of the light-guide plate comprises a plurality of micro-structures. The light source is set beside the light-guide plate, and the light from the light source transferring into the light-guide plate passes through one of its end and out through the micro-structures. The sub-wavelength grating plate is disposed over the light-guide plate: (i) to transmit light having a polarization oriented parallel to the rows of bars and to define a transmitted light, corresponding to the light, as P-ray, and (ii) to reflect light having a polarization oriented perpendicular to the rows of bars and to define a reflected light, corresponding to the light, as S-ray.Type: GrantFiled: May 26, 2005Date of Patent: August 7, 2007Assignee: AU Optronics Corp.Inventors: Shih-Chia Hsu, Jyh-Haur Huang
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Publication number: 20070159852Abstract: A light guide plate structure, for use with a back light module of a liquid crystal display, has a top surface, a bottom surface, a first end portion, a second end portion which is opposite the first end portion, and a plurality of substantially paralleled V-shape grooves formed on the bottom surface and extending from the first end portion to the second end portion. Each of said V-shape grooves comprises a top angle with a continuous variation from the first end portion to the second end portion. The present invention gets rid of the dark areas of an LCD that appear adjacent to one of the end portions in conventional models, thus enhancing the uniformity in its brightness levels.Type: ApplicationFiled: July 7, 2006Publication date: July 12, 2007Applicant: AU OPTRONICS CORP.Inventors: Ko-Chia Kao, Jing-Huan Liao, Chih-Kuang Chen, Jyh-Haur Huang
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Publication number: 20070052375Abstract: The present invention uses different frequencies to drive the LED strips in the back-lighting source so that the spatial uniformity of the back-lighting source as well as the color levels in the source can be monitored and adjusted. Each individual strip is assigned to a different frequency. Alternatively, the strips are divided into groups and each group is assigned to a different frequency. A group may comprise two or more strips. Furthermore, some groups may have more strips than the other groups and the number of LEDs in one strip may be different from the number in other strips. The brightness uniformity and the color levels in the back-lighting source are sensed by one or more groups of color sensors in R, G and B. The assignment of driving frequencies can be based on the location of the strips.Type: ApplicationFiled: September 2, 2005Publication date: March 8, 2007Inventors: Hsin-Wu Lin, Jen-Chi Liu, Jyh-Haur Huang
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Publication number: 20070041215Abstract: A backlight module is provided. The backlight module includes a light guide plate, a lamp and an optical microstructure. The light guide plate has an edge side. The lamp is disposed on the edge side of the light guide plate. The lamp has an electrode end. The light guide plate has a corner shadow area adjacent to the corner shadow area. Light generated by the lamp propagates toward the edge side in the first direction. The optical microstructure is disposed on a surface of the edge side of the light guide plate and guides the light toward the second direction to enter the corner shadow area.Type: ApplicationFiled: March 20, 2006Publication date: February 22, 2007Inventors: Ko-Chia Kao, Jing-Huan Liao, Chih-Kuang Chen, Jyh-Haur Huang
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Publication number: 20060291247Abstract: A light guide plate has a substrate and a set of curved grooves. The set of curved grooves are on the substrate, and has a plurality of curves parallel to the substrate. By the curved grooves, the light guide plate can mitigate the Moiré effect induced by the conventional light guide plate and increase the intensity of emitting light.Type: ApplicationFiled: October 4, 2005Publication date: December 28, 2006Inventors: Ko-Chia Kao, Jing-Huan Liao, Chih-Kuang Chen, Jyh-Haur Huang
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Publication number: 20060274547Abstract: A backlight module and an illumination device thereof. The illumination device of the backlight module comprises a light source and a lens, disposed over the light source with a predetermined gap therebetween. The lens comprises a bottom surface as an incident surface, a pair of upper refracting surfaces, and a pair of lateral refracting surfaces. The upper refracting surfaces form an included angle substantially in a range of about 80° to about 120°.Type: ApplicationFiled: July 6, 2005Publication date: December 7, 2006Inventors: Ko-Chia Kao, Chih-Kuang Chen, Jyh-Haur Huang, Jing-Huan Liao
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Publication number: 20060227548Abstract: A prism unit includes a first prism having a first incident face and a first refraction face that is adjacent to and that cooperates with the first incident face to define a first angle ranging 50° to 70°, a second prism having a second incident face that is generally parallel to the first refraction face and a medium layer sandwiched between the first refraction face and the second incident face, and having a refractive index smaller than that of the first and second prisms.Type: ApplicationFiled: April 11, 2006Publication date: October 12, 2006Inventors: Jyh-Haur Huang, Jing-Huan Liao, Ming-Fa Wang, Chih-Kuang Chen
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Publication number: 20060209415Abstract: A backlight module includes a light source, a light guide disposed on one side of the light source, a reflector disposed under the light guide, a lower diffuser disposed on the light guide, and a brightness enhancement film, which is disposed on the lower diffuser and includes a main part and several prism structures disposed side by side on a main part plane of the main part. Each prism structure includes first to third triangular prisms. The second triangular prism is adjacent to one side of the first triangular prism, and an adjacent angle adjacent to a base angle of the first triangular prism is a right angle. The third triangular prism is adjacent to another side of the first triangular prism, and an adjacent angle adjacent to another base angle of the first triangular prism is a right angle.Type: ApplicationFiled: July 8, 2005Publication date: September 21, 2006Inventors: Ko-Chia Kao, Chih-Kuang Chen, Jyh-Haur Huang
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Publication number: 20060181898Abstract: A backlight module including a diffuser, a reflector, a side light source, a prism lens and a TIR (total internal reflection) lens is disclosed. The reflector is disposed under the diffuser. The side light source is disposed on a side between the diffuser and the reflector. The prism lens is disposed between the side light source and the reflector. The TIR lens is disposed on a bottom of the diffuser and adjacent to the side light source.Type: ApplicationFiled: May 27, 2005Publication date: August 17, 2006Applicant: AU OPTRONICS CORPInventors: Jyh-Haur Huang, Chih-Kuang Chen, Ko-Chia Kao