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Researchers Submit Patent Application, "Light Emitting Module Applied to Display Device", for Approval

September 10, 2014



By a News Reporter-Staff News Editor at Electronics Newsweekly -- From Washington, D.C., VerticalNews journalists report that a patent application by the inventor Cheng, Chieh-Jen (Hsin-Chu, TW), filed on October 4, 2013, was made available online on August 28, 2014.

The patent's assignee is AU Optronics Corp.

News editors obtained the following quote from the background information supplied by the inventors: "The invention relates to a light emitting module and, more particularly, to a light emitting module adapted for a display device with a narrow bezel.

"Referring to FIG. 1, FIG. 1 is a top view illustrating a light emitting module 1 of the prior art. The light emitting module 1 is adapted for a backlight module of a display device. As shown in FIG. 1, the light emitting module 1 comprises a printed circuit board (PCB) 10, a connector 12, a flexible printed circuit board (FPC) 14 and a plurality of light emitting diodes 16. The connector 12 is disposed on the PCB 10. The FPC 14 has one group of connecting cables 140 and one end of the group of connecting cables 140 is electrically connected to the connector 12. The light emitting diodes 16 are disposed on the FPC 14 and electrically connected to the other end of the group of connecting cables 140.

"In the conventional light emitting module 1, the connector 12 disposed on the PCB 10 has ten connecting pins for electrically connecting a certain number of light emitting diodes 16 through the group of connecting cables 140, so as to provide sufficient light for a display panel. In general, a width W1 of the connector 12 with ten connecting pins is about 8 mm, such that a width W2 of the PCB increases correspondingly (e.g. 10 mm). Since the display device tends to thinned size, the PCB 10 of the conventional light emitting module 1 is usually disposed at one side of the display panel. Consequently, a width of a bezel increases due to the width W2 of the PCB 10, such that the conventional light emitting module 1 cannot be adapted for a display device with a narrow bezel."

As a supplement to the background information on this patent application, VerticalNews correspondents also obtained the inventor's summary information for this patent application: "An objective of the invention is to provide a light emitting module adapted for a display device with a narrow bezel, so as to solve the aforesaid problems.

"According to an embodiment of the invention, a light emitting module comprises a first circuit board, a driver chip, two connectors, a second circuit board and a plurality of light emitting units. The driver chip is disposed on the first circuit board. The two connectors are disposed on the first circuit board and electrically connected to the driver chip. The second circuit board has two groups of connecting cables and each group of connecting cables is electrically connected to one of the two connectors. The light emitting units are disposed on the second circuit board and electrically connected to the two groups of connecting cables.

"According to another embodiment of the invention, a display device comprises a frame, a backlight module and a display panel. The backlight module is disposed in the frame. The backlight module comprises the aforesaid light emitting module, a light guide plate and an optical film assembly. The light emitting units are located at a side of the light guide plate. The optical film assembly is disposed on the light guide plate. The display panel is disposed in the frame and located on the backlight module.

"As mentioned in the above, the invention disposes two connectors on the first circuit board and the two connectors are electrically connected to the light emitting units on the second circuit board through two groups of connecting cables. In other words, the invention replaces a single large connector of the prior art (e.g. the one has ten connecting pins) with two small connectors (e.g. each one has six connecting pins), so as to reduce a width of the first circuit board. Consequently, a width of a bezel of the display device can be reduced. Therefore, the light emitting module of the invention can be adapted for a display device with a narrow bezel.

"These and other objectives of the present invention will no doubt become obvious to those of ordinary skill in the art after reading the following detailed description of the preferred embodiment that is illustrated in the various figures and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

"FIG. 1 is a top view illustrating a light emitting module of the prior art.

"FIG. 2 is a partial cross-sectional view illustrating a display device according to an embodiment of the invention.

"FIG. 3 is a top view illustrating a light emitting module according to an embodiment of the invention.

"FIG. 4 is a top view illustrating a light emitting module according to another embodiment of the invention.

"FIG. 5 is a top view illustrating a light emitting module according to another embodiment of the invention.

"FIG. 6 is a cross-sectional view illustrating the first circuit board along line X-X shown in FIG. 5."

For additional information on this patent application, see: Cheng, Chieh-Jen. Light Emitting Module Applied to Display Device. Filed October 4, 2013 and posted August 28, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=4438&p=89&f=G&l=50&d=PG01&S1=20140821.PD.&OS=PD/20140821&RS=PD/20140821

Keywords for this news article include: AU Optronics Corp., Circuit Board, Electronics, Light-emitting Diode.

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Source: Electronics Newsweekly


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