Backlight assembly and method of driving the same
AssigneeSamsung Display Co., Ltd.
InventorsGi-Cherl Kim, Moon-Hwan Chang, Jeom-Oh Kim
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AssigneeSamsung Display Co., Ltd.
InventorsGi-Cherl Kim, Moon-Hwan Chang, Jeom-Oh Kim
Estimating the term…
A plurality of point-light sources emits light, based on an image displayed on a display panel. A substrate has the point-light sources disposed thereon. A power-controlling section provides the point-light sources with first driving current having a pulse current with a pulse modulation duty less than or equal to a maximum pulse modulation duty cycle and a first amplitude in accordance with a normal image. A power-controlling section provides the point-light sources with second driving current having a pulse current with the maximum pulse modulation duty cycle and first boosting amplitude greater than the first amplitude in accordance with a high luminance image. Thus, the quantity of emitted light of the point-light sources may be adjusted in accordance with the position of an image displayed in a display panel, and the point-light sources that correspond to high luminance images may be boosted up.
A backlight assembly comprising:
A method of driving a backlight assembly, the method comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines:…
Circuit arrangements for operating light-emitting diodes [LED]: controlling the colour of the light
Switched mode power supply [SMPS]: using boost topology
For control of overall brightness: by time modulation of the brightness of the illumination source
About 5 years 1 month of term left · ends 10 Dec 2031 (estimated)
This application claims priority to Korean Patent Application No. 2006-112958, filed on Nov. 15, 2006, and all the benefits accruing therefrom under 35 U.S.C. §119, the content of which is incorporated herein by reference in its entirety.
1. Field of the Invention
The present invention relates to a backlight assembly and a method of driving the same.
The above and other features and advantages of the present invention will become readily apparent by reference to the following detailed description when considered in conjunction with the accompanying drawings wherein:
FIG. 1 is a block diagram showing a backlight assembly according to an exemplary embodiment;
FIG. 2 is a plan view showing the substrate in FIG. 1;
The invention is described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. This invention, however, should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to convey the scope of the invention to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity.
It will be understood that when an element or layer is referred to as being “on,” “connected to” or “coupled to” another element or layer, it can be directly on, connected or coupled to the other element or layer or intervening elements or layers may be present. In contrast, when an element is referred to as being “directly on,” “directly connected to” or “directly coupled to” another element or layer, there are no intervening elements or layers present. Like numbers refer to like elements throughout. As used herein, the term “and/or” comprises any and all combinations of one or more of the associated listed items.
It will be understood that, although the terms first, second, third, and the like may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, first element, component, region, layer or section discussed below could be termed second element, component, region, layer or section without departing from the teachings of the present invention.