Prism of backlight module and structure thereof
AssigneeChunghwa Picture Tubes, Ltd.
InventorsChih-Chun Hsiao, Cheng-Min Liao
Life of this patent
Estimating the term…
Abstract
A prism of backlight module and structure thereof is provided. The prism includes a central area on which geometrical units are formed and arranged adjacent to each other on the prism and a periphery area, being a planar structure, located at two sides outside the central area and terminated at edges of the prism. The prism applied to a backlight module is provided by an integrity process or mold punching process or by providing a shielding surface formed by an ink print method on a lower surface of a base of the periphery area of the prism. As such, the problem of light condensing at edges of the prism in a general notebook computer due to absence of an upper diffuser may be reduced and light leakage may also be reduced.
Claims16
A prism applied to a backlight module, comprising:
- a central area on which geometrical units being formed and arranged adjacent to each other on said prism;
- and
- a periphery area, being a planar structure, located at two sides outside said central area and terminated at edges of said prism.
A prism applied to a backlight module, comprising:
- a central area on which first geometrical units being formed and arranged adjacent to each other on said prism;
- and
- a periphery area on which second geometrical units being formed and arranged adjacent to each other on said prism located at two sides outside said central area and terminated at edges of said prism, and having a shielding surface formed by an ink print method on a lower surface of said periphery area.
A prism applied to a backlight module, comprising:
- a central area on which geometrical units being formed and arranged adjacent to each other on said prism;
- and
- a periphery area, being a planar structure, located at two sides outside said central area and terminated at edges of said prism and having a shielding surface formed by an ink print method on a lower surface of said periphery area.
A backlight module, comprising:
- a reflective mask having a chamber;
- a lamp unit disposed on said chamber;
- a light guide plate disposed on one side of said lamp unit;
- a reflector disposed blow said light guide plate;
- a diffuser disposed above said light guide plate;
- and
- a prism disposed above said diffuser, wherein said prism includes a central area on which geometrical units being formed and arranged adjacent to each other on said prism;
- and
- a periphery area, being a planar structure, located at two sides outside said display area and terminated at edges of said prism.
A backlight module, comprising:
- a reflective mask having a chamber;
- a lamp unit disposed on said chamber;
- a light guide plate disposed on one side of said lamp unit;
- a reflector disposed blow said light guide plate;
- a diffuser disposed above said light guide plate;
- and
- a prism disposed above said diffuser, wherein said prism includes a central area on which first geometrical units being formed and arranged adjacent to each other on said prism;
- and
- a periphery area on which second geometrical units being formed and arranged adjacent to each other on said prism, located at two sides outside said central area and terminated at edges of said prism and having a shielding surface formed by an ink print method on a lower surface of said periphery area.
A backlight module, comprising:
- a reflective mask having a chamber;
- a lamp unit disposed on said chamber;
- a light guide plate disposed on one side of said lamp unit;
- a reflector disposed blow said light guide plate;
- a diffuser disposed above said light guide plate;
- and
- a prism disposed above said diffuser, wherein said prism includes a central area on which geometrical units being formed and arranged adjacent to each other on said prism;
- and
- a periphery area having a shielding surface formed by an ink print method on a lower surface of said periphery area.
Dependencies are inferred from the claim text.