News Column

Patent Issued for Connector for Light Source Module and Backlight Assembly Having the Same

May 7, 2014



By a News Reporter-Staff News Editor at Electronics Newsweekly -- Samsung Display Co., Ltd. (KR) has been issued patent number 8704972, according to news reporting originating out of Alexandria, Virginia, by VerticalNews editors.

The patent's inventors are Jang, Jin-Won (Asan-si, KR); Kang, Moon-Shik (Yongin-si, KR); Kwon, Young-Sup (Gwangmyeong-si, KR); Choi, Min-Soo (Asan-si, KR); Kim, Seung-Wan (Asan-si, KR).

This patent was filed on July 13, 2011 and was published online on April 22, 2014.

From the background information supplied by the inventors, news correspondents obtained the following quote: "Exemplary embodiments of the present invention relate to a connector for a light source module and a backlight assembly having the connector. More particularly, exemplary embodiments of the present invention relate to a connector for a light source module capable of simplifying a connecting structure, decreasing a manufacturing cost and improving reliability, and a backlight assembly having the connector.

"Generally, a liquid crystal display apparatus has a thin thickness, a light weight, and a low power consumption so that the liquid crystal display apparatus has been broadly used for a monitor, a laptop computer, a cellular phone, a television and so on. The liquid crystal display apparatus includes a liquid crystal display panel displaying images using a light transmittance of a liquid crystal, and a backlight assembly disposed under the liquid crystal display panel to provide a light to the liquid crystal display panel.

"The backlight assembly includes a plurality of light sources generating light required to display the images by the liquid crystal display panel. For example, the light sources may include a cold cathode fluorescent lamp ('CCFL'), an external electrode fluorescent lamp ('EEFL'), a flat fluorescent lamp ('FFL'), and a light emitting diode ('LED'), etc.

"The LED having a low power consumption and not causing pollution has been being broadly used. The backlight assembly may include a plurality of LED modules and a driving circuit part driving the LED modules. Generally, the driving circuit part is disposed on an outside of a bottom chassis.

"A connector and connecting wirings are used to connect an input terminal of the LED module to an output terminal of the driving circuit part. Assembly processes may be complicated due to the connecting wirings. A manufacturing cost may be increased due to fixing elements, such as a tape and a fixing structure, to fix the connecting wirings to the backlight assembly. An electrical interference may be caused between the connecting wirings. A sheath of the connecting wiring may be peeled off when contacting the fixing structure. Therefore, reliability of the backlight assembly and the liquid crystal display apparatus may be decreased, and a fire may be caused."

Supplementing the background information on this patent, VerticalNews reporters also obtained the inventors' summary information for this patent: "Exemplary embodiments of the present invention provide a connector for light source module capable of simplifying a connecting structure, decreasing a manufacturing cost and improving reliability.

"Exemplary embodiments of the present invention also provide a backlight assembly including the connector.

"In an exemplary embodiment according to the present invention, a connector for a light source module includes a body portion and a terminal portion. The body portion includes a first opening portion and a second opening portion. The first opening portion receives a portion of the light source module. The second opening portion receives a portion of a light source driver which drives the light source module. The terminal portion includes a first terminal and a second terminal. The first terminal is in the first opening portion. The second terminal is connected to the first terminal. The second terminal is in the second opening portion.

"In an exemplary embodiment, the first opening portion may extend through an upper surface of the body portion. The second opening portion may extend through a side surface of the body portion substantially perpendicular to the upper surface of the body portion.

"In an exemplary embodiment, the first opening portion may include a first opening and a second opening.

"In an exemplary embodiment, the first opening portion may extend through a first side surface of the body portion. The second opening portion may extend through a second side surface of the body portion substantially perpendicular to the side surface through which the first opening portion is extended.

"In an exemplary embodiment, the first opening portion may include a first opening extended through the first side surface, and a second opening extended through a third side surface opposite to the first side surface.

"In an exemplary embodiment, the first and second openings may each be extended through an upper surface of the body portion.

"In an exemplary embodiment, an upper portion of the body portion may have a width greater than a width of a lower portion of the body portion.

"In an exemplary embodiment, the lower portion of the body portion may include a fixing element protruded from a side surface of the lower portion.

"In an exemplary embodiment, the first terminal may make contact with a first surface of the light source module. The second terminal may make contact with both first and second surfaces of the light source driver, where the first and second surfaces are opposite to each other.

"In an exemplary embodiment according to the present invention, a backlight assembly includes a light source module part, a bottom chassis, a light source driver and a connector. The light source module part includes a light source substrate, and a plurality of light emitting diodes disposed on the light source substrate. The bottom chassis is disposed under the light source module part and receives the light source module part. The light source driver is disposed facing a bottom surface of the bottom chassis and drives the light source module part. The connector includes a body portion and a terminal portion. The body portion includes a first opening portion and a second opening portion. The first opening portion receives a portion of the light source module part. The second opening portion receives a portion of the light source driver. The terminal portion includes a first terminal and a second terminal. The first terminal is disposed in the first opening portion. The second terminal is connected to the first terminal. The second terminal is disposed in the second opening portion.

"In an exemplary embodiment, the light source substrate may include a light source portion on which the light emitting diodes are disposed, and a light source terminal portion extended directly from the light source portion and on which an input terminal is disposed.

"In an exemplary embodiment, the light source portion of the light source substrate may be extended in a first direction. The light source terminal portion of the light source substrate may be extended from an end portion of the light source portion in a second direction crossing the first direction. The first opening portion of the connector may be extended through an upper surface of the body portion and receive the light source terminal portion. The second opening portion may be extended through a side surface of the body portion substantially perpendicular to the upper surface of the body portion and receive the portion of the light source driver.

"In an exemplary embodiment, the backlight assembly may further include a plurality of light source module parts. The light source module part includes a first light source module including a first light source terminal portion, and a second light source module including a second light source terminal portion. The first opening portion of the connector may include a first opening receiving the first light source terminal portion, and a second opening receiving the second light source terminal portion.

"In an exemplary embodiment, the light source portion of the light source substrate may be extended in a first direction. The light source terminal portion of the light source substrate may be extended directly from an end portion of the light source portion in the first direction. The first opening portion of the connector may extend through a first side surface of the body portion and receive the light source terminal portion. The second opening portion may be extended through a second side surface of the body portion substantially perpendicular to the first side surface through which the first opening portion is extended and receive the portion of the light source driver.

"In an exemplary embodiment, the backlight assembly may further include a plurality of light source module parts. The light source module part includes a first light source module including a first light source terminal portion, and a second light source module including a second light source terminal portion. The first opening portion of the connector may include a first opening extended through a first side surface of the body portion and receiving the first light source terminal portion, and a second opening extended through a third side surface of the body portion opposite to the first side surface of the body portion and receiving the second light source terminal portion.

"In an exemplary embodiment, the first and second openings may both be extended through an upper surface of the body portion.

"In an exemplary embodiment, the light source module part may further include a light emitting diode string including the light emitting diodes connected to each other in series.

"In an exemplary embodiment, an anode (+) of a first light emitting diode of the light emitting diode string, which is the closest to the light source terminal portion, may be connected to the input terminal of the light source module part.

"In an exemplary embodiment, the light source module part may further include a plurality of the light source emitting diode strings.

"In an exemplary embodiment, the light source driver may include a balancing circuit adjusting a current flow through the light emitting diodes to have a uniform level. The balancing circuit may be connected to the anode (+) of the first light emitting diode through the connector.

"In an exemplary embodiment, a cathode (-) of a second light emitting diode of the light emitting diode string, which is the farthest from the light source terminal portion, may be connected to the light source substrate and electrically grounded through the light source substrate.

"In an exemplary embodiment, the bottom chassis may include an opening extended through a bottom plate of the bottom chassis and receiving the body portion of the connector. An upper portion of the body portion may be disposed over the bottom plate of the bottom chassis. A lower portion of the body portion may be disposed under the bottom plate of the bottom chassis.

"In an exemplary embodiment, the upper portion of the body portion may include a protruding portion extending further than a side surface of the lower portion of the body portion. A lower surface of the protruding portion may make contact with an upper surface of the bottom plate of the bottom chassis.

"In an exemplary embodiment, the lower portion of the body portion may include a fixing element protruded from the side surface of the lower portion. An upper surface of the fixing element may make contact with a lower surface of the bottom plate of the bottom chassis.

"In an exemplary embodiment, the first terminal may make contact with a first surface of the light source module part. The second terminal may make contact with both first and second surfaces of the light source driver, the first and second surfaces being opposite to each other.

"In an exemplary embodiment, the backlight assembly may further include a light guide plate. The light source module part may be extended along a first side surface of the light guide plate.

"In an exemplary embodiment, the connector may be disposed adjacent to a central portion of the first side surface of the light guide plate.

"In an exemplary embodiment, the connector may be disposed adjacent to an end portion of the first side surface of the light guide plate.

"In an exemplary embodiment, the backlight assembly may further include a heat sink plate. The heat sink plate may be disposed on the bottom chassis. The heat sink plate may absorb a heat generated from the light source module part.

"In an exemplary embodiment, an upper surface of the heat sink plate is coplanar with an upper surface of the connector.

"According to the connector for a light source module and the backlight assembly including the connector, the connector directly receives portions of a light source module and a light source driver so that connecting wirings to connect the light source module and the light source driver may be omitted. Thus, a connecting structure of the backlight assembly may be simplified, and a manufacturing cost may be decreased. In addition, reliability of the backlight assembly may be improved."

For the URL and additional information on this patent, see: Jang, Jin-Won; Kang, Moon-Shik; Kwon, Young-Sup; Choi, Min-Soo; Kim, Seung-Wan. Connector for Light Source Module and Backlight Assembly Having the Same. U.S. Patent Number 8704972, filed July 13, 2011, and published online on April 22, 2014. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=61&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=3007&f=G&l=50&co1=AND&d=PTXT&s1=20140422.PD.&OS=ISD/20140422&RS=ISD/20140422

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

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Electronics Newsweekly


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