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Pre-drying device, film layer preparation method, light-emitting device and preparation method thereof

A light-emitting device and pre-drying technology, applied in the optical field, can solve the problems of different solvent volatilization rates, uneven film morphology, etc., to avoid uneven morphology and improve luminous quality.

Active Publication Date: 2020-04-14
NANJING TECH CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a pre-drying device, a film preparation method, a light-emitting device and a preparation method thereof, so as to solve the uneven morphology of the film caused by the different volatilization rates of solvents in the film layers of each sub-pixel in the prior art The problem

Method used

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  • Pre-drying device, film layer preparation method, light-emitting device and preparation method thereof
  • Pre-drying device, film layer preparation method, light-emitting device and preparation method thereof
  • Pre-drying device, film layer preparation method, light-emitting device and preparation method thereof

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preparation example Construction

[0044] According to another aspect of the present invention, a kind of preparation method of film layer is provided, such as image 3 As shown, it includes the following steps: step S1', setting the ink on the substrate; step S2', using the same solvent material as the solvent in the ink to disperse the solute in the ink under the action of the gas; step S3', for The dispersed ink in the substrate is dried to form a film layer.

[0045] In the preparation method of the film layer of the present invention, since the ink is arranged on the substrate, and the solvent material is evenly dispersed by the gas, the ink on the substrate can be in a uniform solvent atmosphere, and the area located in the middle of the substrate is uniform. It flows and spreads, thereby effectively avoiding the problem of uneven morphology of the film after drying caused by the different solvent volatilization rates of inks on the surface of the substrate, and improving the performance of the device wit...

Embodiment 1

[0065] The pre-drying device provided in this embodiment includes a box body and a stage arranged in the box body, the box body is provided with a box door, an air inlet and an air outlet, and the vertical distance between the air inlet and the bottom surface of the box body is less than The vertical distance between the upper surface of the loading platform and the bottom surface of the box body, and the vertical distance between the air outlet and the bottom surface of the box body are greater than the vertical distance between the upper surface of the loading platform and the bottom surface of the box body.

[0066] Wherein, there is one air outlet, which is arranged on the top surface of the box body, and is located at the center of the upper surface of the loading platform.

[0067] There is one air inlet, which is arranged on a side wall of the box body.

Embodiment 2

[0069] The difference between the pre-drying device provided in this embodiment and embodiment 1 is:

[0070] There are two air outlets, which are arranged on the top surface of the box body, and are respectively located on both sides of the center position on the upper surface of the stage. The minimum vertical distances between the air outlets arranged on the top surface and the center position are equal.

[0071] There is one air inlet, which is arranged on the bottom surface of the box body, and the projection of the center of the upper surface of the object stage on the bottom surface is located in the air inlet.

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Abstract

The invention provides a pre-drying device, a film preparation method, a light-emitting device and a preparation method thereof. The pre-drying device includes a box body and an object stage arranged in the box body. The box body has an accommodating space for setting solvent materials, and the box body is provided with a box door, an air inlet and an air outlet. The vertical distance between the bottom surfaces of the bodies is smaller than the vertical distance between the upper surface of the loading platform and the bottom surface of the box body. The sub-pixel area provided with ink is set on the stage, and the solvent material of the same type as the solvent in the ink is placed on the bottom of the box in the pre-drying device, and the liquid level of the solvent material is lower than that of the stage When the upper surface is higher than the air inlet, the gas flowing into the box from the air inlet can make the ink in the sub-pixel area flow evenly from the middle area of ​​the sub-pixel area and spread to the entire sub-pixel area, effectively The problem of uneven morphology of the film after drying is avoided, and the luminous quality of the device is improved.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to a pre-drying device, a film preparation method, a light-emitting device and a preparation method thereof. Background technique [0002] In the preparation of PLED (English: Polymer Light-Emitting Diode, polymer light-emitting diode), OLED (organic light-emitting diode) and QLED (quantum dot light-emitting diode) display or lighting devices, inkjet printing technology is usually used to form red and green , blue three primary color light-emitting pixels. The pre-patterned ITO (Indium Tin Oxide) substrate is adsorbed on the printing platform, and various materials (including functional layer materials, and red, green, and blue light-emitting materials) dissolved in the solvent ) solution is sprayed in the sub-pixel pits on the substrate to form red, green and blue three-primary-color light-emitting pixels. The excess solvent in the film layer is then removed through a subsequent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/00H01L51/56
CPCH10K71/441H10K71/00
Inventor 彭军军
Owner NANJING TECH CORP LTD
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