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Inkjet printer and printing method thereof

a printing head and printer technology, applied in the field of display, can solve the problems of quite different drop precision of each drop from the printing head, and achieve the effect of improving display performance and ensuring uniformity of film layers

Active Publication Date: 2019-09-05
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is an inkjet printer and printing method that addresses the issue of uneven brightness of a screen caused by uneven printing volume of an organic light-emitting diode solution among different sub-pixels during a printing process. The invention includes a volume detection apparatus and compensation printing apparatus. The volume detection apparatus detects the volume of the printing solution as soon as the primary printing is completed, and the compensation printing apparatus carries out compensation printing on the printing solution that needs it. This ensures uniformity of a film layer of the OLED device and improves the display performance of the screen.

Problems solved by technology

However, dropping precision of each drop from a printing head is quite different from one another, and droplets ejected from different nozzles of a same printing head are not assured to have the same volume.

Method used

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  • Inkjet printer and printing method thereof

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Embodiment Construction

[0054]The following embodiments are referring to the accompanying drawings for exemplifying specific implementable embodiments of the present disclosure. Furthermore, directional terms described by the present disclosure, such as upper, lower, front, back, left, right, inner, outer, side, etc., are only directions by referring to the accompanying drawings, and thus the used directional terms are used to describe and understand the present disclosure, but the present disclosure is not limited thereto. In the drawings, elements with similar structures are labeled with like reference numerals.

[0055]The present invention provides an inkjet printer and a printing method thereof for overcoming the problem of uneven brightness of a screen caused by considerable printing volume variation of an organic light-emitting diode solution among different sub-pixels during a printing process of an organic light-emitting diode device.

[0056]FIG. 1 is a schematic structural view of an inkjet printer of...

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Abstract

An inkjet printer and a method thereof is disclosed. The inkjet printer, for fabricating an organic light-emitting diode device, includes a printing control apparatus, a main printing apparatus, a volume detection apparatus, and a compensation printing apparatus. The volume detection apparatus is capable of detecting volume and printing locations of a printing solution which needs to be compensated as soon as a main printing apparatus carrying out a primary printing, so that the compensation printing apparatus is capable of carrying out a compensation printing on the printing solution which needs printing compensation.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a U.S. National Phase application submitted under 35 U.S.C. § 371 of Patent Cooperation Treaty Application serial No. PCT / CN2018 / 078772, filed Mar. 13, 2018, which claims the priority of China Patent Application serial No. 201810177505.3, filed Mar. 5, 2018, the disclosures of which are incorporated herein by reference in their entirety.BACKGROUND OF INVENTION1. Field of Invention[0002]The present invention relates to a display field, and particularly to an inkjet printer and printing method thereof.2. Related Art[0003]Organic light-emitting diode (OLED) devices have become novel display devices having most potential due to advantages of being self-luminous, all-solid, and high contrast, etc.[0004]Film formation of OLED devices generally includes an evaporation process and a solution process. The evaporation process has been widely used in manufacturing small size display panels. The solution process includes inkjet pr...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B41J2/045B41J29/393B41M5/00H01L51/00H01L51/56H10K99/00
CPCB41J2/0456B41J29/393H01L51/56H01L51/0005B41M5/0047B41J2/2054H10K71/135B41J2/21H10K71/00
Inventor HAO, PENGWU, YUAN-CHUN
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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