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Display substrate, ink-jet printing method thereof and display device

A display substrate and inkjet printing technology, which is applied to semiconductor devices, electrical components, circuits, etc., can solve problems such as difficult ink droplets, and achieve the effect of ensuring uniformity

Pending Publication Date: 2021-06-22
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, based on the current printing technology, the diameter of the ink droplet formed by the printer nozzle is basically the same as the size of the sub-pixel area, and it is difficult to accurately control the ink droplet falling to the sub-pixel area to ensure that the thickness of the pixel film layer in each sub-pixel area is consistent

Method used

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  • Display substrate, ink-jet printing method thereof and display device
  • Display substrate, ink-jet printing method thereof and display device
  • Display substrate, ink-jet printing method thereof and display device

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Embodiment Construction

[0031] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0032] figure 1 It is a schematic diagram of a display substrate formed with a pixel film layer through an inkjet printing process. Such as figure 1 As shown, the display substrate includes a base substrate 10 and a pixel defining layer 20 disposed on the base substrate 10, and a sub-pixel region 30 for accommodating printing ink droplets 40 is formed on the base substrate 10 between the pixel defining layers 20 . During the inkjet printing process, the printing ink droplet 40 needs to drop accurat...

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Abstract

The embodiment of the invention provides a display substrate and an ink-jet printing method thereof and a display device. The display substrate comprises a substrate body and pixel defining layers arranged on the substrate body; the pixel defining layers comprise first defining layers and second defining layers; a printing area is formed in the position, between the first defining layers, of the substrate body, the second defining layer is arranged on the printing area and divides the printing area into at least two sub-pixel areas, wherein the height of the first defining layer is larger than that of the second defining layer in the direction perpendicular to the substrate base plate.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display substrate, an inkjet printing method thereof, and a display device. Background technique [0002] Compared with Liquid Crystal Display (LCD), Organic Light-Emitting Diode (OLED) has the advantages of self-illumination, fast response, wide viewing angle, high brightness, bright color, light and thin, etc. It is becoming more and more widely recognized as the display device with the most potential for development. [0003] At present, there are mainly two methods of film deposition for organic electroluminescent devices: vacuum evaporation and solution process: 1. Vacuum evaporation is suitable for small organic molecules. The film formation is uniform and the technology is relatively mature, but the equipment investment is large and the material utilization rate is high. Low and large-size products have low mask alignment accuracy; 2. Solution process, including spin c...

Claims

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Application Information

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IPC IPC(8): H01L51/56H01L27/32
CPCH10K71/135H10K77/10H10K59/352H10K59/35H10K59/353H10K59/122H10K50/80
Inventor 罗程远
Owner BOE TECH GRP CO LTD
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