Light emitting sheet and light unit including the same
AssigneeMemslux
InventorJeong-Mu Lee
Life of this patent
Estimating the term…
Abstract
The present invention relates to a light exiting member, a method of manufacturing the same, and more particularly, to a backlight unit of a liquid crystal display, a front light unit of a reflective display, applicable to interior lighting, living lighting or advertisement lighting, and a light member capable of implementing a delicate and various specific image by selectively burying or modifying the same. The light exiting member according to an embodiment of the present invention has a plurality of fine pattern portions formed on one surface, the fine pattern portions have a cavity, the cavity is defined by a lower surface located at a predetermined depth from the opening and a plurality of inner surfaces connected to the lower surface, and at least one of the inner surfaces is convex.
Claims18
A light exiting member comprising:
- a plurality of fine pattern portions formed on one surface, wherein at least one fine pattern portion of the plurality of fine pattern portions has a cavity, the cavity is defined by a lower surface located at a predetermined depth from an opening and a plurality of inner surfaces each of which is connected to each side of the lower surface,
- wherein the cavity has a width which becomes narrower from the opening toward the lower surface,
- wherein each of the inner surfaces is a curved surface convex toward inside of the cavity,
- wherein the cavity has a trapezoidal cross-section,
- wherein the cross-section of the trapezoid is perpendicular to the one surface while passing through a central axis of the cavity,
- wherein the cross-section of the trapezoid includes first to fourth straight lines,
- wherein the first straight line is included in the lower surface,
- wherein the plurality of inner surfaces includes a first inner surface and a second inner surface arranged to face each other,
- wherein the second straight line is included in the first inner surface,
- wherein the third straight line is included in the second inner surface,
- wherein the fourth straight line is included in the opening,
- wherein an angle between the second straight line and the fourth straight line is an acute angle, and
- wherein an angle between the second straight line and the first straight line is an obtuse angle.
A light unit, comprising:
- a light source;
- and
- a light exiting member for exiting light upward from the light source,
- wherein the light exiting member has a plurality of fine pattern portions formed on one surface thereof,
- wherein at least one fine pattern portion of the plurality of fine pattern portions has a cavity,
- wherein the cavity is defined by a lower surface located at a predetermined depth from an opening and a plurality of inner surfaces each of which is connected to each side of the lower surface,
- wherein the cavity has a width which becomes narrower from the opening toward the lower surface,
- wherein each of the inner surfaces is a curved surface convex toward inside of the cavity,
- wherein the cavity has a trapezoidal cross-section,
- wherein the cross-section of the trapezoid is perpendicular to the one surface while passing through a central axis of the cavity,
- wherein the cross-section of the trapezoid includes first to fourth straight lines,
- wherein the first straight line is included in the lower surface,
- wherein the plurality of inner surfaces includes a first inner surface and a second inner surface arranged to face each other,
- wherein the second straight line is included in the first inner surface,
- wherein the third straight line is included in the second inner surface,
- wherein the fourth straight line is included in the opening,
- wherein an angle between the second straight line and the fourth straight line is an acute angle, and
- wherein an angle between the second straight line and the first straight line is an obtuse angle.
Dependencies are inferred from the claim text.