OLED device and manufacturing method thereof
A manufacturing method and device technology, which are applied in the manufacture of semiconductor/solid-state devices, semiconductor devices, electric solid-state devices, etc., can solve the problems affecting the uniformity of ink film formation, and achieve the effect of improving the uniformity of film formation.
Active Publication Date: 2019-07-19
GUANGDONG JUHUA PRINTING DISPLAY TECH CO LTD
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Problems solved by technology
Under the influence of different concentrations, the deposition rate of solute on the short side is often greater than that on the long side, resulting in premature pinprick points, resulting in a thicker deposited film on the short side than on the long side, which in turn affects the uniformity of ink film formation
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[0021] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.
[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of ...
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The invention discloses an OLED device and a manufacturing method thereof. In the manufacturing method of the OLED device, when making the ink storage layer, for each pixel point, the angle between the side wall corresponding to the long side of the pixel point in the ink storage layer and the substrate is controlled to be smaller than that of the pixel point. The included angle between the side wall corresponding to the short side and the substrate. The manufacturing method of the OLED device, by making ink storage layers with different angles on the long side and short side of the pixel point, corrects the difference in ink contact angle caused by uneven geometry, unifies the volatilization rate at the edge, and then solves the problem of short side The problem of uneven film formation caused by excessively high film-forming needle points. On the basis of being compatible with existing equipment, the manufacturing method improves the uniformity of film formation, reduces the production cost while improving the yield of OLED devices, and can be widely used in the manufacture of printed OLED display and lighting technologies as well as printed electronic technologies.
Description
technical field [0001] The invention relates to the technical field of electroluminescence, in particular to an OLED device and a manufacturing method thereof. Background technique [0002] With the gradual development of display technology, organic light emitting diode (OLED) devices have attracted attention from all parties because of their excellent display performance. Companies such as LG, Samsung and BOE are gradually increasing their investment in OLED display technology. The production of OLEDs by conventional evaporation methods faces problems such as low material utilization. In order to further reduce the production cost of OLED screens, the production of OLEDs by printing methods has also been gradually put on the research and development and production schedules of major manufacturers. [0003] When making OLED devices by printing, it is often necessary to make an ink storage layer (Bank) on TFT and ITO glass to limit the flow of ink material on the substrate. ...
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IPC IPC(8): H01L51/56H01L27/32
CPCH10K59/122H10K71/00
Inventor 李耘
Owner GUANGDONG JUHUA PRINTING DISPLAY TECH CO LTD