LED matrix display module with high luminance area ratio
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United States of America Patent
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Apr 1, 2008
Grant Date -
Jan 25, 2007
app pub date -
Jul 11, 2006
filing date -
Jan 19, 2004
priority date (Note) -
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Abstract
The invention relates to a display apparatus, particularly to structure of LED display modules. The invention could be implemented through a LED matrix display module with high luminance area ratio comprising an injection molding unit and a printing board fitted therewith, wherein, LEDs are regularly arranged in a matrix on said printing board, and each pixel dot is correspondingly provided with a reflecting cavity on said molding unit, with the reflecting cavity expanding gradually from the inside section (close to the display surface). The circumference of the inside section of the reflecting cavity forms a closed and smooth circular curve. The invention is characterized in that, the circumference of the outside section of the reflecting cavity forms a closed and smooth curve which is a square with round corners, and the side face of the reflecting cavity is a smooth and cured surface. The invention is advantageous because the luminance area ratio could be significantly improved when the area formed by the circumference of the outside section of the reflecting cavity, which is a square with round corners, was large enough.
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