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Electroluminescent display backplane, preparation method thereof, and display device

An electroluminescent display and backplane technology, which is applied in the direction of circuits, electrical components, and electrical solid-state devices, can solve problems that need to be improved, and achieve the effects of achieving consistency, improving film thickness uniformity, and improving production efficiency

Active Publication Date: 2021-01-01
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current electroluminescent display backplane and its preparation method and display device still need to be improved.

Method used

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  • Electroluminescent display backplane, preparation method thereof, and display device
  • Electroluminescent display backplane, preparation method thereof, and display device
  • Electroluminescent display backplane, preparation method thereof, and display device

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Embodiment Construction

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0033] In one aspect of the present invention, the present invention provides a method for preparing an electroluminescent display backplane. The method can easily obtain an electroluminescent display backplane, and the prepared electroluminescent display backplane can meet the consistency of the dry atmosphere between the display area and the peripheral area during film formation by inkjet printing without setting a pixel defining layer, and can Significantly improve the uniformity of film thickness in the display area, and at the same ...

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PUM

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Abstract

The invention discloses an electroluminescent display backplane, a preparation method thereof, and a display device. According to an embodiment of the present invention, the method includes: printing ink in the display area of ​​the substrate, the ink including a light-emitting layer material, and a solvent capable of dissolving the light-emitting layer material; and in an area other than the display area , to print the solvent. Therefore, this method can easily obtain an electroluminescent display backplane, and the prepared electroluminescent display backplane can meet the consistency of the dry atmosphere between the display area and the peripheral area during inkjet printing film formation, and improve the film thickness of the display area. Thickness uniformity is also conducive to the design requirements of large size and narrow frame.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an electroluminescent display backplane, a preparation method thereof, and a display device. Background technique [0002] Currently, organic electroluminescent (OLED) display technology is developing rapidly. As an important kind of OLED display technology, polymer electroluminescence (PLED) display technology is more and more widely used. The technology of preparing PLED display devices by inkjet printing (inkjet printing PLED technology) has the advantages of simple operation, low cost, simple process, and easy realization of large size, and with the continuous research and development of high-performance polymer materials and thin films The further improvement of the preparation technology is expected to realize the rapid industrialization. Inkjet printing is to spray a solution containing active materials, such as hole transport materials (such as PEDOT / PSS (doped polyani...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32H01L51/52
CPCH10K59/00H10K59/12H10K50/841H10K50/84H10K71/135H10K71/15H10K59/122H10K50/8426H10K71/00
Inventor 崔颖
Owner BOE TECH GRP CO LTD
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