Method of, and apparatus for, filling liquid droplet ejection head with function liquid; liquid droplet ejection apparatus; electrooptic device; method of manufacturing electrooptic device; and electronic apparatus

a technology of function liquid and which is applied in the field of filling the liquid droplet ejection head of the ink jet system with a function liquid, can solve the problems of poor ejection from the nozzle, wasteful consumption of expensive function liquid, and air bubbles that cannot be easily discharged toward the nozzle by the liquid feeding under positive pressur

Inactive Publication Date: 2006-04-25
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention relates to methods or devices that allow liquids containing gas bubbled up during use without causing damage from pressure changes caused by temperature fluctuations. These techniques help improve performance and reliability when used in various applications such as printing technology.

Problems solved by technology

The technical problem addressed in this patented text relates how to efficiently fill the interior space within the printhead without generating unwanted gas bubble(s), especially for use in printing functional materials during manufacturing processes involving multiple steps where different chemical substances can mix before being deposited onto substrate surfaces.

Method used

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  • Method of, and apparatus for, filling liquid droplet ejection head with function liquid; liquid droplet ejection apparatus; electrooptic device; method of manufacturing electrooptic device; and electronic apparatus
  • Method of, and apparatus for, filling liquid droplet ejection head with function liquid; liquid droplet ejection apparatus; electrooptic device; method of manufacturing electrooptic device; and electronic apparatus
  • Method of, and apparatus for, filling liquid droplet ejection head with function liquid; liquid droplet ejection apparatus; electrooptic device; method of manufacturing electrooptic device; and electronic apparatus

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Embodiment Construction

[0082]With reference to the accompanying drawings, a description will now be made about the method of, and an apparatus for, filling a liquid droplet ejection head with a function liquid, and a liquid droplet ejection apparatus. This liquid droplet ejection apparatus is to be built into a line of manufacturing a flat panel display such as an organic electroluminescence (EL) device, or the like. An image (or picture) drawing is made with an ink jet system by selectively ejecting from a liquid droplet ejection apparatus a function liquid such as a filter material, an emitting material, or the like, toward a substrate (workpiece). A predetermined film forming part is thus formed on the substrate.

[0083]As shown in FIGS. 1 through 4, the liquid droplet ejection apparatus 1 is made up of: ejecting means 2 which has liquid droplet ejection heads 20 as shown in FIGS. 6A and 6B and which ejects function liquids; maintenance means 3 which performs maintenance work of the liquid droplet ejection

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Abstract

A function liquid is sent under pressure into the flow passages inside the liquid droplet ejection heads. Thereafter, the function liquid is sucked from nozzles of the liquid droplet ejection heads. In filling the liquid function droplet ejection heads with a function liquid, air bubbles in the flow passages inside the liquid droplet ejection heads can be efficiently discharged, whereby the liquid droplet ejection head is surely filled with the function liquid.

Description

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Claims

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Application Information

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Owner SEIKO EPSON CORP
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