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Patent Issued for Top Chassis Assembly and Display Device Having the Same

August 20, 2014



By a News Reporter-Staff News Editor at Electronics Newsweekly -- From Alexandria, Virginia, VerticalNews journalists report that a patent by the inventors Yoo, Dong-Hyun (Asan-si, KR); Kim, Bo-Yeong (Asan-si, KR); Kim, Jae-Won (Asan-si, KR); Park, Kyung-Ho (Asan-si, KR); Park, Hyung-Jun (Seongnam-si, KR), filed on September 10, 2012, was published online on August 5, 2014.

The patent's assignee for patent number 8794778 is Samsung Display Co., Ltd. (KR).

News editors obtained the following quote from the background information supplied by the inventors: "(1) Field

"Exemplary embodiments of the invention relate to a top chassis assembly and a display device having the top chassis assembly. More particularly, exemplary embodiments of the invention relate to a top chassis assembly for realizing a narrow bezel of a display device and a display device having the top chassis assembly.

"(2) Description of the Related Art

"A range of application for liquid crystal display ('LCD') devices has gradually widened because of the LCD's excellent characteristics such as light weight, thin thickness and low power consumption. The LCD devices have been used in personal computers ('PC') such as notebook PCs, office automation equipment, audio/video equipment, interior/outdoor advertising display devices, and the like. A transparent type LCD device employed in many if not most of the LCD devices, controls an electric field applied to a liquid crystal layer and modulates light provided from a backlight assembly, thereby displaying images.

"In the related art, a cold cathode fluorescent lamp ('CCFL'), a hot cathode fluorescent lamp ('HCFL'), an external electrode fluorescent lamp ('EEFL'), etc. were used as the light source of the backlight assembly. However, a light-emitting diode ('LED') has been spotlighted because the LED can be driven at a low voltage and has excellent characteristics such as low power consumption, excellent color reproduction, excellent contrast ratio, and a long life span.

"An LCD device having a slim size and light weight has been developed in order to secure a competitiveness of a display device product. In the slim size and light weight LCD, for example, a bezel that is a width taken from a peripheral line or an outer edge of an LCD device to an active area of the LCD device is decreased, so that research for reducing a peripheral size of the LCD device to thereby reduce a width of the bezel is ongoing."

As a supplement to the background information on this patent, VerticalNews correspondents also obtained the inventors' summary information for this patent: "One or more exemplary embodiments of the invention provide a top chassis assembly realizing a narrow bezel of a display device by omitting a bonding area of a display panel.

"One or more exemplary embodiments of the invention provide a display device having the above-mentioned top chassis assembly.

"According to an exemplary embodiment of the invention, a top chassis assembly includes a top chassis and a contact unit. The top chassis surrounds a non-display area of a display panel. The contact unit is disposed at an inner surface of the top chassis and contacts a pad part on the non-display area of the display panel.

"In an exemplary embodiment, the contact unit may be a metal pad pattern. The metal pad pattern may be on the inner surface of the top chassis. The top chassis assembly may further include an insulation layer between the metal pad pattern and the top chassis. Moreover, the top chassis may include a nonconductive material. The nonconductive material may include polycarbonate ('PC').

"In an exemplary embodiment, the contact unit may include a probe unit film, and a probe may be on the probe unit film. The probe unit film may be attached to the inner surface of the top chassis.

"In an exemplary embodiment, the top chassis may include an upper plate defining a bezel of a display device. A width of the upper plate may be less than or equal to about 1 millimeter.

"In an exemplary embodiment, the contact unit may have a barcode shape.

"In an exemplary embodiment, the top chassis may include an upper plate, and a side plate which extends from the upper plate. The contact unit may be disposed on an inner surface of the upper plate and on an inner surface of the side plate.

"In an exemplary embodiment, the top chassis may include an upper plate, and a side plate which extends from the upper plate. The contact unit may be disposed on an inner surface of only the upper plate.

"According to another exemplary embodiment of the invention, a display device includes a display panel, a driving circuit, a bottom chassis and a top chassis assembly. The driving circuit drives the display panel. The bottom chassis supports the display panel. The top chassis assembly is combined with the bottom chassis to receive the display panel. The top chassis assembly includes a top chassis and a contact unit. The top chassis surrounds a non-display area of the display panel. The contact unit is disposed at an inner surface of the top chassis and contacts a pad part on the non-display area of the display panel.

"In an exemplary embodiment, the contact unit may be a metal pad pattern. The metal pad pattern may be on the inner surface of the top chassis. The top chassis assembly may further include an insulation layer between the metal pad pattern and the top chassis. Moreover, the top chassis may include a nonconductive material.

"In an exemplary embodiment, the contact unit may include a probe unit film. The probe unit film may include a probe thereon. The probe unit film may be attached to the inner surface of the top chassis.

"In an exemplary embodiment, the top chassis may include an upper plate defining a bezel of the display device. A width of the upper plate may be less than or equal to about 1 millimeter.

"In an exemplary embodiment, the top chassis may include an upper plate, and a side plate which extends from the upper plate. The contact unit may be disposed on an inner surface of the upper plate and on an inner surface of the side plate.

"In an exemplary embodiment, the top chassis may include an upper plate, and a side plate which extends from the upper plate. The contact unit may be disposed on an inner surface of only the upper plate.

"In an exemplary embodiment, the display device may further include a backlight assembly disposed below the display panel. The backlight assembly is received on the bottom chassis and provides the display panel with lights. The backlight assembly may include a printed circuit board, and a plurality of light-emitting diode packages emitting lights and on the printed circuit board.

"In an exemplary embodiment, the display device may further include a backlight assembly disposed below the display panel. The backlight assembly is received on the bottom chassis and provides the display panel with lights. The backlight assembly may include a point light source, and a light guide plate guiding lights emitted from the point light source towards the display panel.

"According to one or more embodiment of a top chassis assembly and a display device having the top chassis assembly, a contact unit is disposed at an inner surface of a top chassis so as to directly contact a pad part on a display substrate, so that a bonding area of a display panel may be omitted, thus a bezel of a display device including the display panel may be reduced."

For additional information on this patent, see: Yoo, Dong-Hyun; Kim, Bo-Yeong; Kim, Jae-Won; Park, Kyung-Ho; Park, Hyung-Jun. Top Chassis Assembly and Display Device Having the Same. U.S. Patent Number 8794778, filed September 10, 2012, and published online on August 5, 2014. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=8794778.PN.&OS=PN/8794778RS=PN/8794778

Keywords for this news article include: Electronics, Circuit Board, Light-emitting Diode, Samsung Display Co. Ltd.

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Source: Electronics Newsweekly


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