Loading patent…
AssigneeSamsung Electronics Co., Ltd.
InventorsHee-Sun Kim, Dong-Sun Kim, Young-Duk Kim
Estimating the term…
Disclosed are a brightness-enhancing light guiding plate and an LCD using the same, in which a brightness enhancing recess portion for improving an optical distribution, changing a light path and enhancing brightness is formed at a surface by which light is reflected. The brightness enhancing recess portion has a reflection recess surface having a maximum surface area and a non-reflection recess surface having a minimum surface area, thereby improving the brightness, changing the light path and improving the optical distribution and thus improving a displaying performance.
A brightness-enhancing light guiding plate, comprising:
A liquid crystal display comprising:
A brightness-enhancing light guiding plate, comprising:
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
From the US filing history. Foreign family members aren’t listed.
No references of this kind are recorded.
Provided on the surface of the light guide or in the bulk of it: 2-D arrangement of prisms, protrusions, indentations or roughened surfaces
Incandescent lamp or gas discharge lamp: with elongated shape, e.g. tube
Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides,…:…
Optical elements, systems or apparatus
Term ended 3 Apr 2022 (estimated)
1. Field of the Invention
The present invention relates to a liquid crystal display device (LCD), and more particularly, to a brightness-enhancing light guiding plate, which changes an optical distribution concentrated on a limited surface area into a uniform optical distribution on an enlarged surface area and thus enhances a brightness necessary for displaying an image, thereby improving a displaying performance, and an LCD device using the same.
2. Description of the Related Art
The above and other advantages of the present invention will become more apparent by describing in detail preferred embodiments thereof with reference to the attached drawings in which:
FIG. 1 is a schematic view showing a principle of changing an optical distribution through a brightness-enhancing light guiding plate according to one embodiment of the present invention;
FIG. 2 is a schematic view showing the brightness-enhancing light guiding plate and a lamp according to one embodiment of the present invention;
Now, preferred embodiments of the present invention will be described in detail with reference to the drawings.
Referring to FIG. 1, an expression “light guiding plate 110” which is generally used throughout the specification is defined as an optical distribution changing unit by which an optical distribution concentrated on a limited surface area “A” is changed into an uniform optical distribution throughout an enlarged surface area “B”.
As shown in FIG. 2, the light guiding plate 110 has a rectangular parallelepiped shape, as one example. More specifically, the light guiding plate 110 has the rectangular parallelepiped shape having four side surfaces, an upper surface and a lower surface.