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Method for inspecting droplet discharge head, device for inspecting droplet discharge head, and droplet discharge device

An inspection method and inspection device technology, applied to printing devices, printing, etc., can solve problems such as inability to obtain sufficient contrast, disappearance, etc.

Inactive Publication Date: 2010-09-22
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dot patterns of these tones cannot obtain sufficient contrast under white light illumination, and even if the dot patterns are photographed, they may disappear from electronic images, and inspections using image processing cannot be properly performed.

Method used

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  • Method for inspecting droplet discharge head, device for inspecting droplet discharge head, and droplet discharge device
  • Method for inspecting droplet discharge head, device for inspecting droplet discharge head, and droplet discharge device
  • Method for inspecting droplet discharge head, device for inspecting droplet discharge head, and droplet discharge device

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Embodiment Construction

[0029] Hereinafter, an embodiment of an inspection method and inspection device for a droplet discharge head, and a liquid droplet discharge device including the same according to the present invention will be described with reference to the accompanying drawings. The droplet discharge device of this embodiment is installed in a drawing system incorporated in a manufacturing line of an electro-optical device, and a functional liquid such as a special ink or a luminescent resin liquid is introduced into a droplet discharge head to form a film formation portion on a substrate.

[0030] figure 1 It is a top schematic view of the droplet ejection device in the embodiment of the present invention. figure 2 It is a schematic diagram of the functional droplet discharge head seen from the nozzle surface side. image 3 is a block diagram showing a control system of the droplet discharge device. Figure 4 It is a schematic plan view showing the inspection area of ​​the inspection cam...

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PUM

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Abstract

The present invention provides a method for inspecting a droplet discharge head, a device for inspecting a droplet discharge head, and a droplet discharge device whereby dot patterns having a predetermined color tone can be appropriately inspected using image processing. A discharge inspection unit 4 includes an inspection camera 66 for performing filming to dot patterns P having a predetermined color tone function droplet discharged from the function droplet discharge head; and an illumination device 65, projecting illumination light to the examination region R; and adopting the image processing to perform examination to the dot patterns P obtained by filming. The illumination device 65 has a red LED (Light Emitting Diode) 68R, a green LED 68G, and a blue LED 68B having a plurality of lighting sources with different tones with each other. The illumination device 65 has a configuration in which the controller 105 can adjust the luminosity of the illuminating light generated by selecting at least one of the lighting source based on the tone of the dot patterns P and performing light modulation to the light of the selected lighting source.

Description

technical field [0001] The present invention relates to a method for inspecting a droplet discharge head, an inspection device for a droplet discharge head, and a droplet discharge device. Background technique [0002] In recent years, electro-optical devices have been manufactured using inkjet droplet discharge devices. Examples of the electro-optical device include devices having a color filter such as a liquid crystal display device and an organic EL (Electro Luminescence) device. In manufacturing these electro-optical devices using a droplet discharge device, it is necessary to discharge (drip) a liquid droplet very accurately in a predetermined amount from a liquid droplet discharge head at a predetermined position with respect to an object to be discharged. [0003] Patent Document 1 below discloses an invention of a method and an apparatus for detecting a dot pattern of liquid droplets discharged from nozzles of a liquid droplet discharge head. The invention of Pate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/21
CPCB41J2/2142B41J29/393B41J29/38
Inventor 伊藤芳博
Owner SEIKO EPSON CORP
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