US2003224102A1PendingUtilityA1

Method for manufacturing electrophoretic display element

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Assignee: CANON KKPriority: May 31, 2002Filed: May 30, 2003Published: Dec 4, 2003
Est. expiryMay 31, 2022(expired)· nominal 20-yr term from priority
Inventors:Masato Minami
G02F 1/167G02F 1/16757G02F 1/1679
40
PatentIndex Score
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Claims

Abstract

A method for manufacturing an electrophoretic display element including partitions, which are arranged on a substrate and each of which contains a suspension composed of electrophoretic particles and a dispersion medium and a coating material for covering the suspension, is provided. The method includes the step of providing at least two nozzles at a predetermined distance from the substrate, discharging the above-mentioned suspension from one nozzle, and discharging the coating material from another nozzle, so as to adhere to the substrate.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . A method for manufacturing an electrophoretic display element including partitions, which are arranged on a substrate and each of which contains a suspension comprising electrophoretic particles and a dispersion medium and a coating material covering the suspension, the method comprising the step of: 
 providing at least two nozzles at a predetermined distance from the substrate, discharging the suspension from one nozzle, and discharging the coating material from another nozzle, so as to adhere to the substrate.    
     
     
         2 . The method for manufacturing an electrophoretic display element according to  claim 1 , wherein the step comprises a step of covering the suspension with the coating material, so that a coated suspension adheres to the substrate.  
     
     
         3 . The method for manufacturing an electrophoretic display element according to  claim 2 , further comprising the step of curing the coating material covering the suspension so as to form a microcapsule.  
     
     
         4 . The method for manufacturing an electrophoretic display element according to  claim 1 , wherein the step comprises a step of adhering the coating material to the suspension arranged on the substrate so as to form a partition enclosing the suspension with the substrate and the coating material.  
     
     
         5 . The method for manufacturing an electrophoretic display element according to  claim 4 , further comprising the step of curing the coating material so as to form a dome-shaped microcapsule.  
     
     
         6 . The method for manufacturing an electrophoretic display element according to  claim 1 , wherein partitions comprising the suspension and the coating material are successively arranged by repeating the step while the substrate is translated.  
     
     
         7 . The method for manufacturing an electrophoretic display element according to  claim 6 , further comprising the step of curing the coating materials by one operation after the step is repeated.  
     
     
         8 . The method for manufacturing an electrophoretic display element according to  claim 1 , wherein the step is performed on the substrate provided with an electrode pattern.  
     
     
         9 . The method for manufacturing an electrophoretic display element according to  claim 1 , wherein the step is performed while a voltage is applied to the electrode.  
     
     
         10 . The method for manufacturing an electrophoretic display element according to  claim 1 , wherein the step is performed on the substrate provided with a pattern in the shape of projections and depressions.  
     
     
         11 . The method for manufacturing an electrophoretic display element according to  claim 1 , wherein the step is performed on the substrate provided with a pattern having variations in surface energy.  
     
     
         12 . The method for manufacturing an electrophoretic display element according to  claim 1 , wherein the nozzle for discharging the suspension and the nozzle for discharging the coating material are concentrically arranged.  
     
     
         13 . The method for manufacturing an electrophoretic display element according to  claim 1 , wherein the nozzle for discharging the suspension and the nozzle for discharging the coating material are arranged in parallel.  
     
     
         14 . The method for manufacturing an electrophoretic display element according to  claim 1 , wherein the nozzle for discharging the suspension comprises a plurality of nozzles including respective electrophoretic particles having colors different on a nozzle basis.  
     
     
         15 . The method for manufacturing an electrophoretic display element according to  claim 1 , wherein at least one nozzle comprises a discharge amount control device.  
     
     
         16 . The method for manufacturing an electrophoretic display element according to  claim 15 , wherein the discharge amount control device comprises a piezoelectric-crystal element.  
     
     
         17 . The method for manufacturing an electrophoretic display element according to  claim 15 , wherein the discharge amount control device comprises a heat-foaming element.  
     
     
         18 . The method for manufacturing an electrophoretic display element according to  claim 15 , wherein the discharge amount control device is a device for vertically vibrating the nozzle.  
     
     
         19 . The method for manufacturing an electrophoretic display element according to  claim 1 , wherein the coating material is a thermosetting polymer.  
     
     
         20 . The method for manufacturing an electrophoretic display element according to  claim 1 , wherein the coating material is a UV-curing polymer.

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