News Column

Patent Issued for Display Device and Backlight Module

August 5, 2014



By a News Reporter-Staff News Editor at Journal of Technology -- According to news reporting originating from Alexandria, Virginia, by VerticalNews journalists, a patent by the inventor Fang, Chong-Yang (Taichung, TW), filed on June 1, 2012, was published online on July 22, 2014.

The assignee for this patent, patent number 8786791, is Dongguan Masstop Liquid Crystal Display Co., Ltd. (Dongcheng District, Dongguan, Guangdong Province,.

Reporters obtained the following quote from the background information supplied by the inventors: "The present invention relates to a display device and a backlight module thereof, and more particularly, to a backlight module providing a backlight source to a liquid crystal display panel for generating a two-dimensional/three-dimensional switchable display effect and a display device including the backlight module.

"The principle of stereoscopic display technology includes respectively delivering different images to a left eye and a right eye of a viewer, giving the viewer a feeling of gradation and depth in the images, and generating the stereoscopic effect in the cerebrum of the viewer by the analyzing and overlapping of images separately received by the left eye and the right eye.

"In general, the stereoscopic display technologies may be substantially divided into two major types, which are the glasses type and the naked-eye type (autostereoscopic type). Recently, the parallax barrier type stereoscopic display technology and the lenticular lens type stereoscopic display technology are the popular naked-eye type stereoscopic display technologies. In the parallax barrier type and the lenticular lens type stereoscopic display technologies, stripe barrier patterns or lenticular lenses are disposed in front of a general display panel, and one eye of a viewer may receive images different from those received by another eye of the viewer. The different images received respectively by two eyes of the viewer may be integrated in the viewer's brain to generate stereoscopic display effect. In the conventional naked-eye type stereoscopic display technologies, two adjacent pixels are used to respectively provide different images to the left eye and the right eye at the same time resulting in the perceived resolution becoming lower than the actual resolution of the display panel, and the display quality may then be seriously influenced."

In addition to obtaining background information on this patent, VerticalNews editors also obtained the inventor's summary information for this patent: "It is one of the objectives of the present invention to provide a display device and a backlight module thereof. The backlight module is used to provide a backlight source to a liquid crystal display panel. A micro-lens array is disposed between the luminant device and the liquid crystal display panel for providing different display images to two eyes of a viewer, and a purpose of presenting a naked-eye two-dimensional/three-dimensional switchable display effect with high resolution may then be achieved.

"A preferred embodiment of the present invention provides a backlight module. The backlight module is used to provide a backlight source for a liquid crystal display panel. The backlight module includes a luminant device and a micro-lens array. The luminant device is disposed under the liquid crystal display panel, and the luminant device includes a plurality of first luminant regions and a plurality of second luminant regions. Each of the first luminant regions and each of the second luminant regions are disposed alternately along a first direction. The micro-lens array is disposed between the luminant device and the liquid crystal display panel. The micro-lens array includes a plurality of micro-lenses, and each of the micro-lenses overlaps at least one first luminant region and at least one second luminant region in a direction perpendicular to the liquid crystal display panel. Each of the first luminant regions provides light in a first display direction via a partial area of the corresponding micro-lens, and each of the second luminant regions provides light in a second display direction via a partial area of the corresponding micro-lens.

"A preferred embodiment of the present invention provides a display device. The display device includes a liquid crystal display panel and a backlight module disposed under the liquid crystal display panel. The backlight module is used to provide a backlight source for the liquid crystal display panel. The backlight module includes a luminant device and a micro-lens array. The luminant device is disposed under the liquid crystal display panel, and the luminant device includes a plurality of first luminant regions and a plurality of second luminant regions. Each of the first luminant regions and each of the second luminant regions are disposed alternately along a first direction. The micro-lens array is disposed between the luminant device and the liquid crystal display panel. The micro-lens array includes a plurality of micro-lenses, and each of the micro-lenses overlaps at least one first luminant region and at least one second luminant region in a direction perpendicular to the liquid crystal display panel. Each of the first luminant regions provides light in a first display direction via a partial area of the corresponding micro-lens, and each of the second luminant regions provides light in a second display direction via a partial area of the corresponding micro-lens.

"In the present invention, by disposing the micro-lens array over the luminant device and controlling conditions of providing light from each of the luminant regions in the luminant device, the light may be provided in different display directions. The backlight module of the present invention may be combined with a liquid crystal display panel for providing a naked-eye two-dimensional/three-dimensional switchable display effect without lowering the display resolution.

"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."

For more information, see this patent: Fang, Chong-Yang. Display Device and Backlight Module. U.S. Patent Number 8786791, filed June 1, 2012, and published online on July 22, 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=8786791.PN.&OS=PN/8786791RS=PN/8786791

Keywords for this news article include: Technology, Dongguan Masstop Liquid Crystal Display Co. Ltd..

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Source: Journal of Technology


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