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Display substrate, use method of display substrate, and polymer electroluminescent device

A technology of electroluminescent devices and display substrates, which is applied in the direction of electric solid-state devices, electrical components, semiconductor devices, etc., and can solve the problem of low uniformity

Active Publication Date: 2015-03-11
BOE TECH GRP CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a display substrate, a method for using the same, and a polymer electroluminescent device, so as to solve the problem of low uniformity of a film formed from a solution in the light-emitting region of the polymer electroluminescent device, thereby improving its display quality

Method used

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  • Display substrate, use method of display substrate, and polymer electroluminescent device
  • Display substrate, use method of display substrate, and polymer electroluminescent device
  • Display substrate, use method of display substrate, and polymer electroluminescent device

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Embodiment 1

[0044] In this embodiment, the display substrate provided by the present invention is used to make a polymer electroluminescent device. The substrate is a 14-inch substrate, and the width of the dummy pixel area is the width of two pixels. A groove area is formed inside, and the width of the groove area is equal to the width of the dummy pixel area (that is, the width of two pixels).

[0045] The process of making a polymer electroluminescent device by inkjet printing technology is as follows: using luminescent material as a solute and volatile organic matter as a solvent to prepare a second ink; mixing the second ink with 1,2-propylene glycol to prepare the first ink; Use glue dispensing technology to add the first ink to the groove area on the substrate, and keep adding the first ink in the groove area; use the second ink to perform inkjet printing on the light-emitting area, so that the second The ink dries to form a film, and finally forms a light-emitting unit; finally, t...

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Abstract

The invention provides a display substrate, a use method of the display substrate, and a polymer electroluminescent device, belongs to the light emitting device field, solves a problem of relatively low uniformity of a film prepared by solution in a light emitting zone of a polymer electroluminescent device in the prior art and improves display quality. The display substrate comprises a light emitting zone arranged at a center of the display substrate, and a virtual pixel zone surrounding the light emitting zone, wherein the virtual pixel zone is internally provided with a groove zone surrounding the light emitting zone. The display substrate can be used for manufacturing the polymer electroluminescent device.

Description

technical field [0001] The invention relates to the field of light-emitting devices, in particular to a display substrate, a method for using the same, and a polymer electroluminescent device. Background technique [0002] Polymer electroluminescent device (PLED) has the advantages of self-luminescence, high brightness, wide viewing angle, low energy consumption, ultra-thin thickness, etc., and is a kind of flat panel display device with great potential. [0003] In order to realize high-efficiency industrial production of polymer electroluminescent devices, inkjet printing technology is now mostly used to manufacture polymer electroluminescent devices. As the name implies, inkjet printing technology dissolves the solution of carrier transport materials and luminescent materials in a solvent as ink, and uses micron-scale printing nozzles to spray the ink into the sub-pixel pits on the patterned ITO substrate, and then Dry to form a film to form each light-emitting unit. In...

Claims

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Application Information

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IPC IPC(8): H01L27/32H01L51/52H01L51/50H01L51/56
Inventor 崔颖刘则王辉锋
Owner BOE TECH GRP CO LTD
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