Patent ID: 9448400
Filing Date: 2016-09-20
CPC Classification: G02B

Claim Text:
1. A display device comprising: an electrophoresis solution tank containing electrophoresis; and a shelter layer disposed above and covering the electrophoresis solution tank, the shelter layer being made up of an opaque material, wherein the display device, in a pixel, further comprises only one rolling ball for the pixel and an electrode embracing a part of the rolling ball, the rolling ball has plural colors on its surface, the rolling ball and the electrode embracing the part of the rolling ball are immerged into the electrophoresis solution, a light transmitting hole is formed in the shelter layer and right above the core of the rolling ball, the light transmitting hole is aligned with the core of the rolling ball so that the light of the color to be currently displayed on the rolling ball passes through the light transmitting hole for display, while the light of the colors not intended to be displayed on the rolling ball is blocked by the shelter layer; and a size of the light transmitting hole is smaller than a size of the rolling ball.