ASYMMETRICAL LUMINANCE ENHANCEMENT STRUCTURE FOR REFLECTIVE DISPLAY DEVICES

摘要

The present invention is directed to a luminance enhancement structure comprising grooves and columns, wherein the grooves have a triangular cross-section and a top angle, and the triangular cross-section having two sides which are not equal. The luminance enhancement structure is useful for reflective display devices. The structure can reduce total internal reflection, thus enhancing the brightness of a display device.

主权项

1. A reflective display device assembly, comprising:
(a) a display device comprising display cells and a top substrate layer on the viewing side of the display device; and (b) a luminance enhancement structure on the viewing side of the display device, wherein said structure comprises grooves and columns in an alternating order, and
(i) each of said grooves has a triangular cross-section and a top angle, and said triangular cross-section has two sides which are not equal and one of the two sides is a tilted side and the other side is a vertical side, and(ii) each of said columns has a top surface separating the grooves wherein the top surface connects the end point of the tilted side of a groove to the end point of the vertical side of a neighboring groove and the vertical side is almost vertical to the top surface of the column, and the top surfaces of the columns are in optical contact with the top substrate layer of the display device.