Abstract:
Methods for improving the performance of electrophoretic media with the addition of acetylene surfactants comprising hydroxyl groups. In particular, the described acetylene surfactants reduce ghosting while improving the contrast ratio in electrophoretic displays.
Abstract:
Variable transmission covering systems that can be used, for example, to control the amount of light passing through a window in a building. Using transmissive electrophoretic media that can switch between a first and second optical state, the invention can be used to change the color and/or transmissivity of a structure (or structures) that is placed in front of an object. In some embodiments, the variable transmission system can change transmission and color on command.
Abstract:
The invention is directed to a variety of designs of piezo electrophoretic displays which may be driven without connecting to a power source. The piezo-electrophoretic display comprises an electrophoretic layer, a conductor layer, and a layer of piezo material. The processes for manufacturing the piezo electrophoretic displays are also provided.
Abstract:
The present invention is directed to display devices comprising a watermark area and a non-watermark area. The watermark aims to protect against counterfeiting or to be used for decoration purposes. The watermark is visible at certain viewing angles and/or under certain lighting conditions and it does not interfere with displaying of the regular images.
Abstract:
A display element (100) comprises a cell (40, 240) containing a fluid (80, 280) including a plurality of wells (20, 220) at the bottom of the cell. A luminescent material (90, 290) is within the cell for modulating light incident from the top of the cell and for returning luminescent light; and a dispersion of particles is contained within the fluid (80, 280). The dispersion of particles (50, 290) is movable between a first state in which the particles are substantially contained within the plurality of wells (20, 220) and a second state in which the particles are distributed between the top and bottom of the cell, to control the intensity of luminescent light returned by the display element (100, 200).
Abstract:
The present invention relates to electrophoretic particles and to a production method therefor, and also to a display device and a drive method using the same. An electrophoretic display device according to one embodiment of the present invention comprises: facing substrates comprising drive electrodes; an array of cavities filled with one or two or more types of data-display particles, disposed between the substrates; and colourless particles which are dispersed together with the data-display particles, in either some or all of the cavities.
Abstract:
본 발명은 일정 간격을 두고 이격되어 있는 제 1 기판과 제 2 기판; 상기 제 1 기판과 제 2 기판의 일면에 각각 서로 대향하게 형성되어 있는 제 1 전극과 제 2 전극; 상기 제 1 전극 상에 형성된 흑색 패턴층; 상기 제 1 전극과 제 2 전극 사이에 형성되어 있고, 상기 제 1 전극상의 격벽의 일면이 상기 흑색 패턴층과 접하거나 중첩하는 복수의 격벽; 및 상기 격벽 사이에 충진된 백색 대전 입자 슬러리;를 포함하는 전기영동 디스플레이 장치및 이의 제조 방법에 관한 것으로서, 상기 전기영동 디스플레이 장치는 높은 대조비와 향상된 시인성을 나타내어 고화질의 텍스트를 구현할 수 있다.