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).

  • Publication number: 20210048856
    Abstract: 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: Application
    Filed: July 7, 2020
    Publication date: February 18, 2021
    Inventors: TIEN-LU HO, KENG-JU LIU
  • Patent number: 8879028
    Abstract: 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: Grant
    Filed: July 28, 2011
    Date of Patent: November 4, 2014
    Assignee: AU Optronics Corporation
    Inventors: Pei-Hsun Wu, Ying-Che Lan, Chih-Haw Wang, Szu-Han Li, Keng-Ju Liu
  • Patent number: 8446546
    Abstract: 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: Grant
    Filed: April 1, 2009
    Date of Patent: May 21, 2013
    Assignee: Au Optronics Corporation
    Inventors: Ya-Ting Ho, Chi-Chih Chu, Keng-Ju Liu
  • Patent number: 8092069
    Abstract: 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: Grant
    Filed: October 15, 2008
    Date of Patent: January 10, 2012
    Assignee: AU Optronics Corp.
    Inventors: Yung-Pin Chuang, Szu-Han Li, Ching-Fu Tien, Keng-Ju Liu, Cheng-Hua Tien, Tsung-Hsien Hsieh
  • Publication number: 20110285938
    Abstract: 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: Application
    Filed: July 28, 2011
    Publication date: November 24, 2011
    Applicant: AU OPTRONICS CORP.
    Inventors: Pei-Hsun WU, Ying-Che Lan, Chih-Haw Wang, Szu-Han Li, Keng-Ju Liu
  • Patent number: 8009251
    Abstract: 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: Grant
    Filed: April 23, 2007
    Date of Patent: August 30, 2011
    Assignee: Au Optronics Corporation
    Inventors: Pei-Hsun Wu, Ying-Che Lan, Chih-Haw Wang, Szu-Han Li, Keng-Ju Liu
  • Patent number: 7866874
    Abstract: 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: Grant
    Filed: July 22, 2008
    Date of Patent: January 11, 2011
    Assignee: AU Optronics Corp.
    Inventors: Keng-ju Liu, Wen-yuan Cheng, Chi-chih Chu
  • Patent number: 7830470
    Abstract: 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: Grant
    Filed: November 25, 2008
    Date of Patent: November 9, 2010
    Assignee: Au Optronics Corporation
    Inventor: Keng-Ju Liu
  • Patent number: 7699497
    Abstract: 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: Grant
    Filed: October 30, 2007
    Date of Patent: April 20, 2010
    Assignee: AU Optronics Corp.
    Inventors: Yung-Pin Chuang, Szu-Han Li, Ching-Fu Tien, Keng-Ju Liu, Cheng-Hua Tien, Tsung-Hsien Hsieh
  • Publication number: 20100014015
    Abstract: 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: Application
    Filed: April 1, 2009
    Publication date: January 21, 2010
    Applicant: AU OPTRONICS CORPORATION
    Inventors: Ya-Ting Ho, Chi-Chih Chu, Keng-Ju Liu
  • Publication number: 20090290381
    Abstract: 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: Application
    Filed: July 22, 2008
    Publication date: November 26, 2009
    Applicant: AU Optronics Corp.
    Inventors: Keng-ju Liu, Wen-yuan Cheng, Chi-chih Chu
  • Publication number: 20090168402
    Abstract: 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: Application
    Filed: November 25, 2008
    Publication date: July 2, 2009
    Applicant: AU OPTRONICS CORPORATION
    Inventor: Keng-Ju Liu
  • Publication number: 20090115930
    Abstract: 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: Application
    Filed: October 15, 2008
    Publication date: May 7, 2009
    Applicant: AU Optronics Corp.
    Inventors: Yung-Pin Chuang, Szu-Han Li, Ching-Fu Tien, Keng-Ju Liu, Cheng-Hua Tien, Tsung-Hsien Hsieh
  • Publication number: 20090021668
    Abstract: 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: Application
    Filed: November 16, 2007
    Publication date: January 22, 2009
    Applicant: AU OPTRONICS CORP.
    Inventors: Wen-Yuan Cheng, Cheng-Chih Lai, Keng-Ju Liu
  • Publication number: 20080112163
    Abstract: 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: Application
    Filed: October 30, 2007
    Publication date: May 15, 2008
    Applicant: AU Optronics Corp.
    Inventors: Yung-Pin Chuang, Szu-Han Li, Ching-Fu Tien, Keng-Ju Liu, Cheng-Hua Tien, Tsung-Hsien Hsieh
  • Publication number: 20070285597
    Abstract: 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: Application
    Filed: April 23, 2007
    Publication date: December 13, 2007
    Applicant: QUANTA DISPLAY INC.
    Inventors: Pei-Hsun Wu, Ying-Che Lan, Chih-Haw Wang, Szu-Han Li, Keng-Ju Liu
  • Patent number: 7097342
    Abstract: 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: Grant
    Filed: May 10, 2004
    Date of Patent: August 29, 2006
    Assignee: 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
  • Publication number: 20050157520
    Abstract: 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: Application
    Filed: May 10, 2004
    Publication date: July 21, 2005
    Applicant: 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