Electronic paper display apparatus and method thereof
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsHwan-Soo Lee, Hye Yeon Cha, Yongsoo Oh
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Abstract
The present invention provides an electronic paper display apparatus, which comprises: plural pairs of rotating balls each pair having a first rotating ball and a second rotating ball of a size smaller than that of the first rotating ball; a partition wall member having a plurality of cavities each in which a respective rotating ball is positioned and configured to transversely separate the plurality of rotating balls from each other; an electrode structure formed on the partition wall member and configured to provide a drive voltage to each of the plurality of rotating balls; and a plurality of distance adjusting members disposed inside the plurality of cavities, with being faced the plurality of rotating balls.
Claims17
An electronic paper display apparatus, comprising:
- plural pairs of rotating balls each pair having a first rotating ball and a second rotating ball of a size smaller than that of the first rotating ball;
- a partition wall member having a plurality of cavities each in which a respective rotating ball is positioned and configured to transversely separate the plurality of rotating balls from each other;
- an electrode structure formed on the partition wall member and configured to provide a drive voltage to each of the plurality of rotating balls;
- and
- a plurality of distance adjusting members disposed inside the plurality of cavities, with being faced the plurality of rotating balls,
- wherein a thickness of the distance adjusting member is adjusted so that the ratio of the height of the cavity to the diameter of the rotating ball falls within the range of 1.1 to 1.7.
An electronic paper display apparatus, comprising:
- plural pairs of rotating balls each pair having different diameters;
- a partition wall member having a plurality of cavities each in which a respective one of rotating balls is positioned;
- a lower structure formed beneath the partition wall member;
- an upper structure formed above the partition wall member, and configured to define the plurality of cavities together with the partition wall member and the lower structure;
- an electrode structure formed on the partition wall member and configured to provide drive voltages to each of the plurality of rotating balls;
- and
- a plurality of distance adjusting members disposed on at least one of the lower structure and the upper structure so that the ratio of the distance between the lower and upper structures to the diameter of the rotating ball falls within a range of 1.1 to 1.7.
A method of manufacturing an electronic paper display apparatus, comprising:
- preparing plural pairs of rotating balls each pair having a first rotating ball and a second rotating ball of a size smaller than that of the first rotating ball;
- forming a partition wall member having a plurality of cavities each in which a respective one of the rotating balls is positioned, on a lower electrode, and further forming a lower structure;
- forming an upper structure with an upper electrode which provides a drive voltage to each of the plurality of rotating balls;
- forming a plurality of distance adjusting members on at least one of the lower structure and the upper structure;
- and
- disposing the distance adjusting member inside the plurality of cavities and further coupling the lower structure and the upper structure so that the ratio of the distance between the lower and upper structures to the diameter of the rotating balls falls within a range of 1.1 to 1.7.
Dependencies are inferred from the claim text.