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Pixel definition layer, ink-jet printing method, display substrate and preparation method thereof and display device

A pixel-defining layer and pixel-defining technology, applied in semiconductor/solid-state device manufacturing, electrical components, electrical solid-state devices, etc., can solve the problems of uneven display brightness, uneven shape, and influence on the display effect of organic light-emitting display devices in the pixel area. , to achieve the effect of being conducive to narrow frame design, uniform shape, and reducing space size

Pending Publication Date: 2019-04-05
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inconsistency of the drying speed of the ink may make the morphology of the organic functional layer formed at different positions in the pixel area uneven when the inkjet printing method is used to form the organic functional layer, which will lead to uneven display brightness in the pixel area, which seriously affects The display effect of the obtained organic light-emitting display device

Method used

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  • Pixel definition layer, ink-jet printing method, display substrate and preparation method thereof and display device
  • Pixel definition layer, ink-jet printing method, display substrate and preparation method thereof and display device
  • Pixel definition layer, ink-jet printing method, display substrate and preparation method thereof and display device

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preparation example Construction

[0036]At least one embodiment of the present disclosure provides a method for preparing a display substrate. The display substrate includes a display region and a peripheral region. The method includes: forming the above-mentioned pixel defining layer, wherein the display pixel defining region and the auxiliary pixel defining region of the pixel defining layer Corresponding to the display area and the peripheral area respectively; a plurality of first pixels are formed in the display area by a plurality of first pixel defining units, and a plurality of second pixels are formed in the peripheral area by a plurality of second pixel defining units.

[0037] At least one embodiment of the present disclosure provides a display device, including the above-mentioned display substrate.

Embodiment 1

[0040] The present embodiment provides a pixel defining layer, which can be used to form an array substrate such as an organic light emitting diode (OLED) display panel. Such as figure 1 As shown, the pixel defining layer includes a display pixel defining region 10 and an auxiliary pixel defining region 20 surrounding the display pixel defining region 10; the display pixel defining region 10 includes a plurality of first pixel defining units 101; the auxiliary pixel defining region 20 includes a plurality of The second pixel defining unit 201 , and the opening area of ​​at least part of the second pixel defining unit 201 is larger than the opening area of ​​the first pixel defining unit 101 .

[0041] In this example, if figure 1 As shown, the first pixel defining unit and the second pixel defining unit may be arranged in a matrix form, for example, a plurality of pixel defining units form rows and columns and are aligned with each other. For example, a plurality of second p...

Embodiment 2

[0057] This embodiment provides a method for inkjet printing using the pixel defining layer provided in the above embodiment, which can be used to form an array substrate such as an OLED display panel, and the method includes: forming the first pixel defining unit and the second pixel Inkjet printing is carried out within the openings defining the cells, thereby forming the desired functional layer.

[0058] For example, in this embodiment, when inkjet printing is performed, the amount of ink jet printed in the opening of the second pixel defining unit may be more than the amount of ink jet printing in the opening of the first pixel defining unit. For example, the amount of ink jet printed in the second pixel defining unit and the first pixel defining unit may be proportional to the size of the openings of the second pixel defining unit and the first pixel defining unit respectively. Therefore, by inkjet printing different amounts of ink in the pixel defining units with differ...

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Abstract

The invention discloses a pixel definition layer, an ink-jet printing method, a display substrate and a preparation method thereof and a display device. The pixel definition layer comprises a displaypixel definition region and an auxiliary pixel definition region surrounding the display pixel definition region; the display pixel definition region comprises a plurality of first pixel definition units; the auxiliary pixel definition region comprises a plurality of second pixel definition units, and the opening area of at least a part of the second pixel definition units is greater than that ofthe first pixel definition units. According to the pixel definition layer, the drying speed of ink-jet printing ink positioned inside an edge and an internal opening can be balanced during ink-jet printing by setting few second pixel definition units, so that the form of ink after drying is more uniform.

Description

technical field [0001] Embodiments of the present disclosure relate to a pixel defining layer, an inkjet printing method, a display substrate and a manufacturing method thereof, and a display device. Background technique [0002] Organic light-emitting display devices have the advantages of self-illumination, fast response, wide viewing angle, high brightness, bright colors, light and thin, etc., and thus become an important display technology. [0003] The organic functional layer of the organic light-emitting display device can be formed by inkjet printing, for example, and the formation of the organic functional layer by inkjet printing requires pre-fabricating a pixel defining layer on the substrate to limit the precise injection of the organic functional material. within the pixel area. Usually, the above-mentioned pixel defining layer has multiple openings. In the process of inkjet printing, the ink drying speed of inkjet printing on the openings at the edge of the su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/32H01L51/00H01L51/56H10K99/00
CPCH10K59/122H10K71/135H10K59/88H10K59/173H10K71/00
Inventor 侯文军
Owner BOE TECH GRP CO LTD
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