Patents by Inventor Keng-Ju Liu
Keng-Ju Liu 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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Publication number: 20210048856Abstract: A display device includes a display panel having a bottom surface, a frame disposed along a periphery of the display panel, a first convex structure, and a block. The frame has a support surface configured to support the bottom surface. The first convex structure protrudes from the support surface, and is located between the support surface and the bottom surface and distributed along at least a portion of the periphery of the display panel. The block has a first surface and a second surface. The first surface is connected to the bottom surface; the second surface at least partially abuts against a top portion of the first convex structure to cause a local deformation of the block. The block has a flexibility larger than that of the first convex structure.Type: ApplicationFiled: July 7, 2020Publication date: February 18, 2021Inventors: TIEN-LU HO, KENG-JU LIU
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Patent number: 8879028Abstract: The LCD sequentially comprises, from bottom to top, a backlight module, a first polarizer, a first substrate, a liquid crystal layer, a second substrate, and a second polarizer. The second substrate comprises plural transparent areas thereon. The first substrate comprises plural light-focusing arrays. Each of the light-focusing arrays comprises plural high-refractive areas and low-refractive areas disposed between the high-refractive areas. The plural high-refractive areas comprises a first high-refractive area and plural second high-refractive area disposed on two sides of the high-refractive areas symmetrically, wherein the widths of the second high-refractive areas are the same and smaller than the width of the first high-refractive area.Type: GrantFiled: July 28, 2011Date of Patent: November 4, 2014Assignee: AU Optronics CorporationInventors: Pei-Hsun Wu, Ying-Che Lan, Chih-Haw Wang, Szu-Han Li, Keng-Ju Liu
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Patent number: 8446546Abstract: A backlight module and a display panel device using the same are provided. The backlight module includes a light source module, an open frame, and a reflector sheet. The open frame is disposed around the light source module and has a first free-end and a second free-end. A space interval exists between the first and second free-ends. The reflector sheet is disposed on a rear side of the light source module and has a body and a sidewall. The sidewall corresponds to the space interval between the first and second free-ends and extends over the light source module. The display panel further includes a liquid crystal display panel (LCD panel) on the light source module and a front frame which is disposed on the LCD panel enclosing a lateral side of the LCD panel. The sidewall of the reflector sheet extends between the lateral side of the LCD panel and the front frame to provide insulation.Type: GrantFiled: April 1, 2009Date of Patent: May 21, 2013Assignee: Au Optronics CorporationInventors: Ya-Ting Ho, Chi-Chih Chu, Keng-Ju Liu
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Patent number: 8092069Abstract: A backlight module and a frame thereof are provided, which comprises an outer frame, an elastic side frame, a connecting arm and a cantilever. Here, the elastic side frame is disposed on the at least one side of the outer frame. The connecting arm is connected to a surface of the elastic side frame. The cantilever is disposed on the connecting arm, and formed a first space with the elastic side frame.Type: GrantFiled: October 15, 2008Date of Patent: January 10, 2012Assignee: AU Optronics Corp.Inventors: Yung-Pin Chuang, Szu-Han Li, Ching-Fu Tien, Keng-Ju Liu, Cheng-Hua Tien, Tsung-Hsien Hsieh
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Publication number: 20110285938Abstract: The LCD sequentially comprises, from bottom to top, a backlight module, a first polarizer, a first substrate, a liquid crystal layer, a second substrate, and a second polarizer. The second substrate comprises plural transparent areas thereon. The first substrate comprises plural light-focusing arrays. Each of the light-focusing arrays comprises plural high-refractive areas and low-refractive areas disposed between the high-refractive areas. The plural high-refractive areas comprises a first high-refractive area and plural second high-refractive area disposed on two sides of the high-refractive areas symmetrically, wherein the widths of the second high-refractive areas are the same and smaller than the width of the first high-refractive area.Type: ApplicationFiled: July 28, 2011Publication date: November 24, 2011Applicant: AU OPTRONICS CORP.Inventors: Pei-Hsun WU, Ying-Che Lan, Chih-Haw Wang, Szu-Han Li, Keng-Ju Liu
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Patent number: 8009251Abstract: The LCD sequentially includes, from bottom to top, a backlight module, a first polarizer, a first substrate, a liquid crystal layer, a second substrate, and a second polarizer. The second substrate includes multiple transparent areas thereon. The first substrate includes multiple light-focusing arrays. Each of the light-focusing arrays includes multiple high-refractive areas and low-refractive areas disposed between the high-refractive areas. The multiple high-refractive areas includes a first high-refractive area and multiple second high-refractive area disposed on two sides of the high-refractive areas symmetrically, wherein the widths of the second high-refractive areas are the same and smaller than the width of the first high-refractive area.Type: GrantFiled: April 23, 2007Date of Patent: August 30, 2011Assignee: Au Optronics CorporationInventors: Pei-Hsun Wu, Ying-Che Lan, Chih-Haw Wang, Szu-Han Li, Keng-Ju Liu
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Patent number: 7866874Abstract: The present invention discloses a backlight module having replaceable light apparatus. The backlight module includes the replaceable light apparatus, a back plate and a frame body. The replaceable light apparatus includes a light control circuit, a securing device and conducting wires. The light control circuit is adapted to a frame body and a back plate of the backlight module. Additionally, the light control circuit has a plurality of light sources, a first end portion and a second end portion. The securing device has a supporting housing which has a position protrusion and a clamping portion for supporting the first end portion of the light control circuit along a first direction (X) and a third direction (Z). The clamping portion clamps the first end portion of the light control circuit along a second direction (Y) and the third direction (Z).Type: GrantFiled: July 22, 2008Date of Patent: January 11, 2011Assignee: AU Optronics Corp.Inventors: Keng-ju Liu, Wen-yuan Cheng, Chi-chih Chu
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Patent number: 7830470Abstract: The present invention discloses a backlight module. The backlight module of the present invention includes a frame, a flexible circuit board, a light emitting unit, and a light guide plate. The frame has a bottom surface, an inner sidewall adjacent and perpendicular to the bottom surface, and a protrusion unit. Protrusion unit protrudes from the inner sidewall and is parallel to the bottom surface. The flexible circuit board is disposed beneath the protrusion unit and electrically connected to the light emitting unit. The light guide plate is disposed on the bottom surface and is adjacent to the light emitting unit. Furthermore, the protrusion unit is disposed at the corner of the two adjacent inner sidewalls of the frame, and a substrate presses the protrusion unit which further presses the flexible circuit board, and thus the flexible circuit board and the light emitting unit connected thereto can be fixed in the frame.Type: GrantFiled: November 25, 2008Date of Patent: November 9, 2010Assignee: Au Optronics CorporationInventor: Keng-Ju Liu
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Patent number: 7699497Abstract: A backlight module for a liquid crystal display (LCD) device includes a bottom plate, a plurality light sources, a light-premixing unit, and a light-mixing unit. The light sources are mounted on the bottom frame. The light-premixing unit is located above the bottom frame. The light-premixing unit includes a first diffuser. The light-mixing unit is located at a distance above the light-premixing unit. The light-mixing unit includes a second diffuser. The backlight module can effectively reduce the thickness of and meet the slim-line requirement of the LCD.Type: GrantFiled: October 30, 2007Date of Patent: April 20, 2010Assignee: AU Optronics Corp.Inventors: Yung-Pin Chuang, Szu-Han Li, Ching-Fu Tien, Keng-Ju Liu, Cheng-Hua Tien, Tsung-Hsien Hsieh
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Publication number: 20100014015Abstract: A backlight module and a display panel device using the same are provided. The backlight module includes a light source module, an open frame, and a reflector sheet. The open frame is disposed around the light source module and has a first free-end and a second free-end. A space interval exists between the first and second free-ends. The reflector sheet is disposed on a rear side of the light source module and has a body and a sidewall. The sidewall corresponds to the space interval between the first and second free-ends and extends over the light source module. The display panel further includes a liquid crystal display panel (LCD panel) on the light source module and a front frame which is disposed on the LCD panel enclosing a lateral side of the LCD panel. The sidewall of the reflector sheet extends between the lateral side of the LCD panel and the front frame to provide insulation.Type: ApplicationFiled: April 1, 2009Publication date: January 21, 2010Applicant: AU OPTRONICS CORPORATIONInventors: Ya-Ting Ho, Chi-Chih Chu, Keng-Ju Liu
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Publication number: 20090290381Abstract: The present invention discloses a backlight module having replaceable light apparatus. The backlight module includes the replaceable light apparatus, a back plate and a frame body. The replaceable light apparatus includes a light control circuit, a securing device and conducting wires. The light control circuit is adapted to a frame body and a back plate of the backlight module. Additionally, the light control circuit has a plurality of light sources, a first end portion and a second end portion. The securing device has a supporting housing which has a position protrusion and a clamping portion for supporting the first end portion of the light control circuit along a first direction (X) and a third direction (Z). The clamping portion clamps the first end portion of the light control circuit along a second direction (Y) and the third direction (Z).Type: ApplicationFiled: July 22, 2008Publication date: November 26, 2009Applicant: AU Optronics Corp.Inventors: Keng-ju Liu, Wen-yuan Cheng, Chi-chih Chu
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Publication number: 20090168402Abstract: The present invention discloses a backlight module. The backlight module of the present invention includes a frame, a flexible circuit board, a light emitting unit, and a light guide plate. The frame has a bottom surface, an inner sidewall adjacent and perpendicular to the bottom surface, and a protrusion unit. Protrusion unit protrudes from the inner sidewall and is parallel to the bottom surface. The flexible circuit board is disposed beneath the protrusion unit and electrically connected to the light emitting unit. The light guide plate is disposed on the bottom surface and is adjacent to the light emitting unit. Furthermore, the protrusion unit is disposed at the corner of the two adjacent inner sidewalls of the frame, and a substrate presses the protrusion unit which further presses the flexible circuit board, and thus the flexible circuit board and the light emitting unit connected thereto can be fixed in the frame.Type: ApplicationFiled: November 25, 2008Publication date: July 2, 2009Applicant: AU OPTRONICS CORPORATIONInventor: Keng-Ju Liu
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Publication number: 20090115930Abstract: A backlight module and a frame thereof are provided, which comprises an outer frame, an elastic side frame, a connecting arm and a cantilever. Here, the elastic side frame is disposed on the at least one side of the outer frame. The connecting arm is connected to a surface of the elastic side frame. The cantilever is disposed on the connecting arm, and formed a first space with the elastic side frame. The frame of the backlight can protect optical films or panel and sustain optical films against higher stress.Type: ApplicationFiled: October 15, 2008Publication date: May 7, 2009Applicant: AU Optronics Corp.Inventors: Yung-Pin Chuang, Szu-Han Li, Ching-Fu Tien, Keng-Ju Liu, Cheng-Hua Tien, Tsung-Hsien Hsieh
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Publication number: 20090021668Abstract: A backlight module and a liquid crystal display including the backlight module are provided. The backlight module includes a light source, a light guide plate and a prism sheet. The light source is disposed at a side of the light guide plate, while the prism sheet is disposed adjacent to the light emitting surface of the light guide plate. The prism sheet has a plurality of prism structures facing the light guide plate, wherein each of the prism structures substantially has a vertex angle of about 55 to 70 degrees. Thus, light emitted from the light guide plate can be adjustably concentrated along the direction perpendicular to the panel.Type: ApplicationFiled: November 16, 2007Publication date: January 22, 2009Applicant: AU OPTRONICS CORP.Inventors: Wen-Yuan Cheng, Cheng-Chih Lai, Keng-Ju Liu
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Publication number: 20080112163Abstract: A backlight module for a liquid crystal display (LCD) device includes a bottom plate, a plurality light sources, a light-premixing unit, and a light-mixing unit. The light sources are mounted on the bottom frame. The light-premixing unit is located above the bottom frame. The light-premixing unit includes a first diffuser. The light-mixing unit is located at a distance above the light-premixing unit. The light-mixing unit includes a second diffuser. The backlight module can effectively reduce the thickness of and meet the slim-line requirement of the LCD.Type: ApplicationFiled: October 30, 2007Publication date: May 15, 2008Applicant: AU Optronics Corp.Inventors: Yung-Pin Chuang, Szu-Han Li, Ching-Fu Tien, Keng-Ju Liu, Cheng-Hua Tien, Tsung-Hsien Hsieh
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Publication number: 20070285597Abstract: A high brightness liquid crystal display (LCD) is provided. In the LCD, plural light-focusing areas are disposed on a first substrate or a first polarizer, near the backlight module, right below the transparent areas on a second substrate to increase brightness of the LCD. Each of the light-focusing areas comprises at least a high-refractive area having higher refractive index.Type: ApplicationFiled: April 23, 2007Publication date: December 13, 2007Applicant: QUANTA DISPLAY INC.Inventors: Pei-Hsun Wu, Ying-Che Lan, Chih-Haw Wang, Szu-Han Li, Keng-Ju Liu
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Patent number: 7097342Abstract: A housing for a backlight module is disclosed. The housing has a bottom casing and a side frame for holding a lighting unit, a light guide plate having a protrusion, and optionally a plurality of optical sheets. In particular, an indentation part is formed on the side frame for holding the protrusion, and a slit with unequal width is formed adjacent to the indentation part. A backlight module using the above-mentioned housing is also disclosed therewith.Type: GrantFiled: May 10, 2004Date of Patent: August 29, 2006Assignee: Quanta Display Inc.Inventors: Yung-Ping Chuang, Keng-Ju Liu, Chun-Chi Hsu, Bing-Han Tsai, Mao-Wei Lin, Szu-Han Li, Li-Hwang Lu, Deng-Kuen Shiau, Chun-Ming Chen, Chun-Chien Chu
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Publication number: 20050157520Abstract: A housing for a backlight module is disclosed. The housing has a bottom casing and a side frame for holding a lighting unit, a light guide plate having a protrusion, and optionally a plurality of optical sheets. In particular, an indentation part is formed on the side frame for holding the protrusion, and a slit with unequal width is formed adjacent to the indentation part. A backlight module using the above-mentioned housing is also disclosed therewith.Type: ApplicationFiled: May 10, 2004Publication date: July 21, 2005Applicant: Quanta Display Inc.Inventors: Yung-Ping Chuang, Keng-Ju Liu, Chun-Chi Hsu, Bing-Han Tsai, Mao-Wei Lin, Szu-Han Li, Li-Hwang Lu, Deng-Kuen Shiau, Chun-Ming Chen, Chun-Chien Chu