Patents by Inventor Young-Joo Chang

Young-Joo 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).

  • Patent number: 10788692
    Abstract: An LCD device includes a transmissive LCD panel assembly, a backlight assembly for supplying light to the LCD panel assembly, and a selective reflection film provided between the backlight assembly and the LCD panel assembly. A display region of the LCD has a low-resolution area and a high-resolution area, and a pixel formed in the low-resolution area that is larger than a pixel formed in the high-resolution area.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: September 29, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kee-Han Uh, Hyung-Guel Kim, Sang-Woo Kim, Seung-Kyu Lee, Bo-Young An, Won-Sang Park, Jae-Hyun Kim, Hae-Young Yun, Jae-Young Lee, Poundaleva Irina, Sung-Eun Cha, Young-Joo Chang, Jae-Ik Lim, Ki-Hun Jeong
  • Patent number: 8023073
    Abstract: A liquid crystal display (“LCD”) includes forming only a ?/4 plate between a polarizer and a display panel and setting a direction of an absorption axis of the polarizer and a slow axis of the ?/4 plate, so that the LCD can have a smaller thickness and its fabrication cost can be reduced while having better or the same characteristics than an LCD using both ?/2 and ?/4 plates. In addition, in an ECB mode backlit LCD, transmittance, contrast ratio, and viewing angles can be enhanced by attaching both the ?/4 or ?/2 plate and allowing the absorption axis of the polarizer and the slow axis of the ?/4 and ?/2 plates to have predetermined angle relationships.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: September 20, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Woo Kim, Cheong-Haeng Lee, Won-Sang Park, Young-Joo Chang, Jun-Young Lee, Sung-Wook Kang, Jae-Young Lee, Hae-Young Yun, Jae-Ik Lim, Seung-Kyu Lee, Chang-Woo Shim, Yong-Suk Yeo, Ji-Youn Choi
  • Patent number: 7956962
    Abstract: In a transflective-type display panel and a display apparatus having the transflective-type display panel, the transflective-type display panel includes a first display substrate, a second display substrate and a liquid crystal layer. The first display substrate includes a first substrate and a common electrode arranged on the first substrate. The second display substrate includes a second substrate having a main pixel area where a plurality of sub pixel areas are formed, a plurality of transmission electrodes formed in the sub pixel areas and coupled with each other, and a reflection electrode arranged in at least one sub pixel area. Thus, the transflective-type display panel improves a viewing angle and a display quality thereof and improves productivity.
    Type: Grant
    Filed: November 16, 2005
    Date of Patent: June 7, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-Young Lee, Kee-Han Uh, Won-Sang Park, Hae-Young Yun, Jae-Hyun Kim, Young-Joo Chang, Irina Poundaleva, Sung-Eun Cha, Seung-Kyu Lee, Jae-Ik Lim, Sang-Woo Kim
  • Patent number: 7728616
    Abstract: Disclosed is a picture quality testing apparatus and method of a liquid crystal display which can measure at least any one of gray inversion and color shift. An apparatus for testing the picture quality of a liquid crystal display includes a liquid crystal display for displaying a test pattern, an image pickup device for photographing the test pattern of the liquid crystal display, a measurer for measuring the transmittance of the test pattern photographed by the image pickup device, and a rotating means for rotating at least one of the liquid crystal display and the image pickup device while the image pickup device photographs the test pattern.
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: June 1, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Won Sang Park, Kee Han Uh, Hae Young Yun, Jae Ik Lim, Seung Kyu Lee, Sung Eun Cha, Young Joo Chang, Jae Young Lee, Sang Woo Kim
  • Publication number: 20100066655
    Abstract: An LCD device includes a transmissive LCD panel assembly, a backlight assembly for supplying light to the LCD panel assembly, and a selective reflection film provided between the backlight assembly and the LCD panel assembly. A display region of the LCD has a low-resolution area and a high-resolution area, and a pixel formed in the low-resolution area that is larger than a pixel formed in the high-resolution area.
    Type: Application
    Filed: November 20, 2009
    Publication date: March 18, 2010
    Inventors: Kee-Han Uh, Hyung-Guel Kim, Sang-Woo Kim, Seung-Kyu Lee, Bo-Young An, Won-Sang Park, Jae-Hyun Kim, Hae-Young Yun, Jae-Young Lee, Poundaleva Irina, Sung-Eun Cha, Young-Joo Chang, Jae-Ik Lim, Ki-Hun Jeong
  • Patent number: 7646438
    Abstract: A micro lens panel unit for 3D display device includes: a first panel; a resin lens formed on the first panel and having a convex shape; a second panel facing the first panel; and a liquid crystal interposed between the first and second panels.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: January 12, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Won-Sang Park, Kee-Han Uh, Hae-Young Yun, Jae-Hyun Kim, Jae-Young Lee, Young-Joo Chang, Poundaleva Irina, Sung-Eun Cha, Seung-Kyu Lee, Jae-Ik Lim, Sang-Woo Kim
  • Patent number: 7633473
    Abstract: An LCD device includes a transmissive LCD panel assembly, a backlight assembly for supplying light to the LCD panel assembly, and a selective reflection film provided between the backlight assembly and the LCD panel assembly. A display region of the LCD has a low-resolution area and a high-resolution area, and a pixel formed in the low-resolution area that is larger than a pixel formed in the high-resolution area.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: December 15, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kee-Han Uh, Hyung-Guel Kim, Sang-Woo Kim, Seung-Kyu Lee, Bo-Young An, Won-Sang Park, Jae-Hyun Kim, Hae-Young Yun, Jae-Young Lee, Poundaleva Irina, Sung-Eun Cha, Young-Joo Chang, Jae-Ik Lim, Ki-Hun Jeong
  • Patent number: 7609344
    Abstract: The present invention provides a transflective liquid crystal display having reflection regions and transmission regions, including a first substrate, a light transmissive layer formed on the first substrate and having recessed portions corresponding to the transmission regions, color filters formed on the light transmissive layer and having a position-dependent thickness due to the recessed portions of the light transmissive layer, transparent electrodes formed on the first substrate, reflective electrodes disposed on the reflection regions and interposed between the light transmissive layer and the color filters, a second substrate, a common electrode formed on the second substrate, and a liquid crystal layer interposed between the first substrate and the second substrate.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: October 27, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Joo Chang, Jae-Ik Lim, Jae-Young Lee, Seung-Kyu Lee, Sung-Eun Cha, Poundaleva Irina, Sang-Woo Kim, Jae-Hyun Kim, Hae-Young Yun, Won-Sang Park, Kee-Han Uh
  • Publication number: 20080180355
    Abstract: An array substrate comprises a gate line formed on a substrate, a plurality of data lines insulated from the gate line, a pixel area including a first sub-area and a second sub-area, a thin film transistor formed in the pixel area, a pixel electrode formed on the thin film transistor, the pixel electrode electrically connected to the thin film transistor, a storage line formed on the substrate, the storage line spaced apart from the gate line and positioned at a first boundary of each of the pixel areas and a floating electrode formed on the substrate, the floating electrode spaced apart from the gate line and the storage line, and positioned at a second boundary of the pixel area.
    Type: Application
    Filed: December 26, 2007
    Publication date: July 31, 2008
    Inventors: So-Young LEE, Il-Gon KIM, Young-Joo CHANG
  • Publication number: 20070171336
    Abstract: A liquid crystal display (“LCD”) includes forming only a ?/4 plate between a polarizer and a display panel and setting a direction of an absorption axis of the polarizer and a slow axis of the ?/4 plate, so that the LCD can have a smaller thickness and its fabrication cost can be reduced while having better or the same characteristics than an LCD using both ?/2 and ?/4 plates. In addition, in an ECB mode backlit LCD, transmittance, contrast ratio, and viewing angles can be enhanced by attaching both the ?/4 or ?/2 plate and allowing the absorption axis of the polarizer and the slow axis of the ?/4 and ?/2 plates to have predetermined angle relationships.
    Type: Application
    Filed: September 14, 2006
    Publication date: July 26, 2007
    Inventors: Sang-Woo Kim, Cheong-Haeng Lee, Won-Sang Park, Young-Joo Chang, Jun-Young Lee, Sung-Wook Kang, Jae-Young Lee, Hae-Young Yun, Jae-Ik Lim, Seung-Kyu Lee, Chang-Woo Shim, Yong-Suk Yeo, Ji-Youn Choi
  • Publication number: 20070052891
    Abstract: A panel includes a first substrate, a second substrate facing the first substrate and first and second polarizers disposed on the outer surfaces of the first and the second substrates, respectively. The first and second polarizers include biaxial n-TAC as a supporter.
    Type: Application
    Filed: September 8, 2006
    Publication date: March 8, 2007
    Inventors: Sang-Woo Kim, Won-Sang Park, Jae-Young Lee, Hae-Young Yun, Jae-Ik Lim, Young-Joo Chang, Seung-Kyu Lee, Chang-Woo Shim, Yong-Suk Yeo, Sung-Eun Cha, Ji-Youn Choi, Hye-Jin Seo, Joo-Hee Oh
  • Publication number: 20070019134
    Abstract: A polarizing film assembly includes a polarizing film, a speaker film, a vibration improving layer, and a line member. The polarizing film includes a polarization layer transmitting a light vibrating in a polarizing direction. The speaker film is on the polarizing film to change an electric signal into a mechanical vibration to generate a sound. The vibration improving layer is interposed between the polarizing film and the speaker film to improve the mechanical vibration. The line member is electrically connected to the speaker film to transmit the electric signal. Therefore, a size and thickness of a display device are decreased while maintaining sound quality of the display device.
    Type: Application
    Filed: July 19, 2006
    Publication date: January 25, 2007
    Inventors: Won-Sang Park, Kee-Han Uh, Hae-Young Yun, Jae-Ik Lim, Seung-Kyu Lee, Young-Joo Chang, Jae-Young Lee, Hyung-Guel Kim, Sung-Eun Cha, Sang-Woo Kim
  • Publication number: 20070019132
    Abstract: A method of manufacturing a microlens substrate includes forming a microlens sheet of a photosensitive resin including a lenticular lens array on a lower substrate, exposing the microlens sheet to light through a mask dividing the lenticular lens array into a plurality of portions respectively corresponding to a plurality of cells and defining a boundary between each of the plurality of cells, planarizing a portion of the microlens sheet corresponding to the boundary, and forming a seal line on the planarized boundary to combine the lower substrate with a corresponding upper substrate.
    Type: Application
    Filed: December 30, 2005
    Publication date: January 25, 2007
    Inventors: Jae-hyun Kim, Kee-han Uh, Won-sang Park, Hae-young Yun, Sang-woo Kim, Jae-Young Lee, Jae-ik Lim, Young-Joo Chang, Seung-Kyu Lee, Poundaleva Irina, Sung-eun Cha
  • Publication number: 20070012918
    Abstract: A liquid crystal display device is provided. The liquid crystal display device includes a liquid crystal display panel and an optical film assembly. The liquid crystal display panel includes two substrates and a liquid crystal layer disposed between the substrates, and has a plurality of multi-domains defined in a unit pixel. The optical film assembly includes a biaxial film and a polarizing film formed integrally with the biaxial film. Moreover, the biaxial film is disposed near to the liquid crystal cell.
    Type: Application
    Filed: June 21, 2006
    Publication date: January 18, 2007
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jae-Young Lee, Won-Sang Park, Hae-Young Yun, Jae-Hyun Kim, Jae-Ik Lim, Seung-Hyu Lee, Ji-Youn Choi, Joo-Hee Oh, Hye-Jin Seo, Sung-Eun Cha, Young-Joo Chang, Sang-Woo Kim
  • Publication number: 20070008459
    Abstract: A polarizing film includes a pressure sensitive adhesive layer, a phase difference layer, a polarizing layer and a transparent protecting layer. The phase difference layer is on the pressure sensitive adhesive layer. The phase difference layer is extended in a first direction. The polarizing layer is on the phase difference layer. The polarizing layer is extended in a second direction. The transparent protecting film is on the polarizing layer. Therefore, the thickness of the polarizing film is decreased, and the yield is increased.
    Type: Application
    Filed: June 7, 2006
    Publication date: January 11, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Won-Sang Park, Kee-Han Uh, Hae-Young Yun, Sang-Woo Kim, Jae-Ik Kim, Seung-Kyu Lee, Sung-Eun Cha, Young-Joo Chang, Jae-Young Lee
  • Publication number: 20070004071
    Abstract: A liquid crystal display (LCD) and a method for fabricating the same in which the pixel electrodes of a lower substrate includes sub-pixel electrodes each defining a domain and in which the upper substrate includes a common electrode having openings in a region corresponding to the center of the sub-pixel electrodes, either of both of the sub-pixel electrodes and the common electrodes inclining toward each other, and a liquid crystal layer including liquid crystal molecules formed between the lower substrate and the upper substrate.
    Type: Application
    Filed: June 30, 2006
    Publication date: January 4, 2007
    Inventors: Jae-young Lee, Won-sang Park, Hae-young Yun, Sang-woo Kim, Jae-ik Lim, Young-joo Chang, Sung-eun Cha, Ji-youn Choi, Hye-jin Seo, Joo-hee Oh
  • Publication number: 20070002216
    Abstract: A polarizer which includes a polarization film having a transmissive region and a reflective region, the reflective region being comprised of a layer of reflective material supported
    Type: Application
    Filed: June 30, 2006
    Publication date: January 4, 2007
    Inventors: Young-joo Chang, Won-sang Park, Hyung-guel Kim, Kee-han Uh, Hae-young Yun, Sang-woo Kim, Jae-young Lee, Jae-ik Lim, Seung-kyu Lee, Sung-eun Cha
  • Publication number: 20060158588
    Abstract: An LCD device includes a transmissive LCD panel assembly, a backlight assembly for supplying light to the LCD panel assembly, and a selective reflection film provided between the backlight assembly and the LCD panel assembly. A display region of the LCD has a low-resolution area and a high-resolution area, and a pixel formed in the low-resolution area that is larger than a pixel formed in the high-resolution area.
    Type: Application
    Filed: December 14, 2005
    Publication date: July 20, 2006
    Inventors: Kee-Han Uh, Hyung-Guel Kim, Sang-Woo Kim, Seung-Kyu Lee, Bo-Young An, Won-Sang Park, Jae-Hyun Kim, Hae-Young Yun, Jae-Young Lee, Poundaleva Irina, Sung-Eun Cha, Young-Joo Chang, Jae-lk Lim, Ki-Hun Jeong
  • Publication number: 20060125977
    Abstract: A micro lens panel unit for 3D display device includes: a first panel; a resin lens formed on the first panel and having a convex shape; a second panel facing the first panel; and a liquid crystal interposed between the first and second panels.
    Type: Application
    Filed: December 8, 2005
    Publication date: June 15, 2006
    Inventors: Won-Sang Park, Kee-Han Uh, Hae-Young Yun, Jae-Hyun Kim, Jae-Young Lee, Young-Joo Chang, Poundaleva Irina, Sung-Eun Cha, Seung-Kyu Lee, Jae-Ik Lim, Sang-Woo Kim
  • Publication number: 20060125749
    Abstract: Disclosed is a display device with a driving method thereof. The display device includes a plurality of gate lines, a plurality of data lines crossing the gate lines for transmitting gray voltages corresponding to image data among a plurality of the gray voltages as data voltages, and a plurality of pixels connected to the gate and the data lines for receiving the data voltages. The pixels include first color pixels, second color pixels, and third color pixels. The first color pixels express a maximum luminance upon application of a first voltage having the maximum value among the gray voltages, and the second and the third color pixels express a maximum luminance upon application of second and third voltages less than the first voltage among the gray voltages.
    Type: Application
    Filed: December 14, 2005
    Publication date: June 15, 2006
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seung-Kyu Lee, Won-Sang Park, Kee-Han Uh, Hae-Young Yun, Jae-Hyun Kim, Sang-Woo Kim, Ki-Hun Jeong, Sung-Eun Cha, Irina Poundaleva, Jae-Young Lee, Jae-Ik Lim, Young-Joo Chang