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US 2003/0193473 A1Published application
Method of producing display panel and display panel
AssigneeSeiko Epson Corporation
InventorHideyuki Kawai
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AssigneeSeiko Epson Corporation
InventorHideyuki Kawai
Estimating the term…
The prevent invention is a method in which microcapsules are placed at desired locations selectively accurately and easily to produce a high accuracy electrophoretic display panel. In the production method of a display panel of the present invention, the microcapsules (43) are uniformly coated onto a substrate (41), on which electrodes (42) is formed by using an optical hardening resin as a binder material (44). Next, the binder material (44) is hardened by selectively irradiating a light beam to the only locations desired for placing the microcapsules (43) by using a photomask (45). The binder material (44) of portions not hardened is removed by washing in water. Thus, the microcapsules can be selectively and accurately placed at the only desired positions. A color electrophoretic display panel, in which each microcapsule of three primary colors is placed in a predetermined arrangement, can be produced by sequentially performing the processes for the three types of microcapsules corresponding to three primary colors.
A method of manufacturing a display apparatus which includes a pixel, comprising:
A display apparatus including a plurality of pixels comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
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Being movable elements: the positions of the elements being controlled by the application of an electric field
Characterised by the electro-optical or magneto-optical effect: by electrophoresis
Constructional details: microcapsules
Function characteristic: colour display without the use of colour mosaic filters
Term end not estimated
The present invention relates to a display panel using microcapsules which accommodates an electrophoretic or magnetophoretic particles, and more particularly, to a method of producing the display panel capable of arranging the microcapsules at a predetermined position on electrodes accurately and the display panel in which the microcapsules is accurately, arranged at the predetermined position on the electrodes.
In an electrophoretic display apparatus and magnetophoretic display apparatus for displaying a desired picture by using the microcapsules, each sealing colored dispersion media and the electrophoretic particles, the uniform arrangement of the microcapsules over a substrate is important on a stable display operation.
Conventionally, many methods with an object of producing a pressure sensing paper and a heat sensitive paper are proposed an methods of uniformly coating microcapsules on a plane surface.
Objects and features of the present invention as mentioned above becomes more clear from the following descriptions referring to the attached drawings,
FIG. 1A to FIG. 1C are diagrams for explaining a production method of a display panel of a first embodiment in the present invention;
FIG. 1A is a diagram showing a state of coating the microcapsules onto a substrate;
FIRST EMBODIMENT
First, a method which is a basic production method of the display panel for the present invention and a method for placing the microcapsules at any positions over a substrate selectively and accurately will be explained referring to FIGS. 1A to 1C as a first embodiment of the present invention.
FIGS. 1A to 1C are diagrams showing a step of placing the microcapsules at the desired position over a substrate.