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Preparation method for display panel and preparation method for functional layer thereof

A display panel and functional layer technology, which is applied in the field of display panel preparation, can solve problems such as uneven film formation of functional layers, achieve uniform thickness, uniform film thickness, and achieve narrow frame effects

Active Publication Date: 2019-12-24
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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Problems solved by technology

[0005] The embodiment of the present application provides a method for preparing a display panel and a method for preparing a functional layer thereof, so as to solve the problem of the solvent evaporation process caused by the difference in the solvent atmosphere above the display area of ​​the substrate when preparing the functional layer of the display panel by inkjet printing. The problem of uneven film formation of the functional layer avoids setting up a dummy pixel layer around the display area and realizes the design of a narrow frame of the display panel

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  • Preparation method for display panel and preparation method for functional layer thereof
  • Preparation method for display panel and preparation method for functional layer thereof
  • Preparation method for display panel and preparation method for functional layer thereof

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Embodiment Construction

[0031] Specific structural and functional details disclosed herein are representative only and are for purposes of describing example embodiments of the present application. This application may, however, be embodied in many alternative forms and should not be construed as limited to only the embodiments set forth herein.

[0032] In the description of this application, it should be understood that the terms "central", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, rather than indicating or implying the referred device Or elements must have a certain orientation, be constructed and operate in a certain orientation, and thus should not be construed as limiting the application. In addition...

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Abstract

The invention discloses a preparation method for a display panel and a preparation method for a functional layer thereof. The display panel comprises a substrate. The preparation method for the functional layer comprises the steps that an inkjet printing technology is used to print on a display area of the substrate to form an ink layer, wherein the ink layer comprises a solute and a solvent whichdissolves the solute; the amount of the solute at different positions of the ink layer is the same, and the amount of the solvent at the edge of the ink layer is greater than the amount of the solvent at the center of the ink layer; the solvent in the ink layer is evaporated to form the functional layer with uniform film thickness. The invention provides the method for preparing the functional layer with uniform film thickness. According to the invention, in the process of solvent evaporation, the solvent atmosphere above the display area of the substrate is substantially the same; the film thickness of the formed functional layer is uniform; and the design of the narrow frame of the display panel is realized.

Description

technical field [0001] The present application relates to the technical field of display panels, in particular to a method for preparing a display panel and a method for preparing a functional layer thereof. Background technique [0002] At present, the organic light-emitting diode (OLED for short) display technology develops rapidly. The light-emitting layer (EL) in OLED devices is particularly important, and its mainstream process technology is evaporation. In comparison, the inkjet printing (IJP) method for preparing OLED devices has the advantages of simple operation, low cost, simple process, and easy realization of large Advantages such as size are more and more valued by the industry. Inkjet printing is to spray a solution containing active materials, such as HIL (hole injection layer), HTL (hole transport layer) and red, green and blue light-emitting materials, on the patterned surface through a micron-scale printing nozzle. In the sub-pixels (light-emitting areas)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/56H01L27/32H10K99/00
CPCH10K59/35H10K71/135H10K59/122H10K71/15H10K50/15H10K59/1213H10K2102/351
Inventor 翁德志王杲祯
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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