OLED device and making method thereof
A manufacturing method and device technology, which is applied in semiconductor/solid-state device manufacturing, electric solid-state devices, semiconductor devices, etc., can solve problems affecting ink film-forming uniformity and achieve the effect of improving film-forming uniformity
Active Publication Date: 2018-02-13
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 making method thereof. The making method is characterized in that when an ink storage layer is made, for each pixel point, an angle between a side wall ofthe ink storage layer corresponding to a long side of the pixel point and the substrate is smaller than an angle between a side wall of the ink storage layer corresponding to a short side of the pixelpoint and the substrate. The making method of the OLEED device is further characterized in that by making the ink storage layer with different angles according to the long side and the short side ofthe pixel point, and by modifying differences of the ink touching angles caused by uneven geometries and unifying volatilization rates of edges, the problem of uneven film forming is further solved, which is caused by high pinprick point of the film forming in the short side. The making method has the advantages that based on compatibility with the present devices, uniformity of the film forming is improved, production cost is reduced while good production rate of the OLED device is increased, and can be widely applied to printed OLED display and lighting technology manufacturing and printed electronics manufacturing.
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