Patents by Inventor Ju-Hwa Ha

Ju-Hwa Ha 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: 20060181867
    Abstract: A light-diffusing member includes a first face, a second face arranged opposite to the first face, and a light-diffusing portion including at least one valley and at least one ridge that are alternatively arranged. A first thickness of the light-diffusing member between the ridge and the first face is about 1.15 to about 1.80 times greater than a second thickness of the light-diffusing member between the valley and the first face.
    Type: Application
    Filed: December 15, 2005
    Publication date: August 17, 2006
    Inventors: Seong-Sik Choi, Dong-Lyoul Shin, Doo-Won Lee, Kui-Yong Choi, Ju-Hwa Ha, Byung-Yun Joo, Jung-Wook Paek, Jin-Sung Choi, Heu-Gon Kim, Sang-Hoon Lee, Jae-Hwan Chun
  • Publication number: 20060164568
    Abstract: A light control plate includes a base part and a lenticular shaped first light dispersion part combined with at least one side of the base part to disperse light provided from an exterior of the light control part. Accordingly, a light control plate and a thin liquid crystal display including the light control plate is provided to assure uniform brightness.
    Type: Application
    Filed: January 24, 2006
    Publication date: July 27, 2006
    Inventors: Jung-Wook Paek, Jin-Soo Kim, Byung-Yun Joo, Ju-Hwa Ha, Jin-Sung Choi
  • Publication number: 20060133108
    Abstract: In a backlight assembly and a display device including the backlight assembly, the backlight assembly includes a light dispersion member and a light source having a plurality of light source members, a distance defined between the light sources members adjacent to each other. The light dispersion member includes a lower face portion having alternately arranged ridges and grooves. Each light source is positioned under a respective ridge. An interval between a center of each light source and the respective ridge positioned directly over the light source is from about 0.2 to about 0.55 times the distance.
    Type: Application
    Filed: November 28, 2005
    Publication date: June 22, 2006
    Inventors: Seong-Sik Choi, Dong-Lyoul Shin, Jae-Hwan Chun, Byung-Yun Joo, Jung-Wook Paek, Jin-sung Choi, Ju-Hwa Ha, Heu-Gon Kim, Sang-Hoon Lee
  • Publication number: 20060093825
    Abstract: A reflection sheet includes a reflection layer that reflects light irradiated from an external device and a dissipating layer that is formed on the reflection layer and dissipates the heat generated from a lamp unit in a horizontal direction toward an outside of the lamp unit. The dissipation layer has a thermal conductivity in a horizontal direction higher than that in a vertical direction and thus the heat may rapidly be transmitted to a first container. As a result, this may suppress the increment of temperatures in a backlight assembly, increase the luminance of the lamp unit, and improve a display quality of a liquid crystal display device.
    Type: Application
    Filed: October 28, 2005
    Publication date: May 4, 2006
    Inventors: Sang-Hoon Lee, Ju-Hwa Ha, Si-Joon Song
  • Publication number: 20060087865
    Abstract: In a light modulating plate, a backlight assembly having the light modulating plate and a display device having the light modulating plate, the light modulating plate includes a light modulating layer and a light characteristics improving member. The light modulating layer includes a foam layer to modulate a light. The light characteristics improving member is integrally formed with the light modulating layer to improve optical characteristics of the light that has passed through the light modulating layer. Therefore, the backlight assembly is easily fabricated, and an image display quality is improved.
    Type: Application
    Filed: August 26, 2005
    Publication date: April 27, 2006
    Inventors: Ju-Hwa Ha, Jin-Soo Kim, Heu-Gon Kim, Jae-Ho Jung
  • Publication number: 20050280756
    Abstract: A compact, light, and uniformly bright backlight assembly and a display device are disclosed. The backlight assembly includes a light source assembly, a substrate, and a transflective member. The light source assembly emits a first light with a first luminance uniformity. Then, the first light passes through the substrate above the light source assembly for producing enhanced luminance uniformity. Again, after the light is reflected from and/or transmitted through the transflective member, the luminance uniformity is even more enhanced. Therefore, the volume, weight, and luminance uniformity of the backlight assembly and the display device are enhanced.
    Type: Application
    Filed: March 31, 2005
    Publication date: December 22, 2005
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Heu-Gon Kim, Hea-Chun Lee, Jae-Ho Jung, Ju-Hwa Ha