Display backplane, display device
A display backplane and substrate technology, applied in semiconductor devices, electrical components, circuits, etc., can solve the problems of uneven inner film surface of pixels, affecting the efficiency, life and display effect of OLED display devices, and achieve good display effect, The effect of high yield
Active Publication Date: 2022-06-21
HEFEI BOE ZHUOYIN TECH CO LTD +1
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Problems solved by technology
However, during the drying process, due to the difference in solvent volatilization rate between the middle and the edge of the large-scale glass, it will cause the problem of uneven film surface in the pixel, which will affect the efficiency, life and display effect of the OLED display device
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[0035] The embodiments of the present invention are described in detail below, and those skilled in the art will understand that the following embodiments are intended to explain the present invention and should not be regarded as a limitation of the present invention. Unless otherwise specified, specific techniques or conditions are not explicitly described in the following examples, and those skilled in the art can follow common techniques or conditions in the art or follow product specifications.
[0036] In one aspect of the present invention, the present invention provides a display backplane.
[0037] According to an embodiment of the present invention, refer to figure 1 , the display backplane includes a substrate 100 and a pixel defining layer; wherein, the pixel defining layer is disposed on one side of the substrate 100 and has a plurality of openings 201 passing through, and the pixel defining layer includes a stacked first sublayer 210 and The second sublayer 220,...
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Abstract
The present invention proposes a display backplane and a display device. The display backplane includes: a substrate; a pixel defining layer, which is arranged on one side of the substrate and has a plurality of through openings, and the pixel defining layer includes stacked first sublayers and second sublayers, the first sublayer The layer is disposed between the second sublayer and the substrate; wherein the orthographic projection of the first sublayer on the substrate falls within the orthographic projection of the second sublayer on the substrate. In the display backplane proposed by the present invention, the first sub-layer in the pixel defining layer has an indentation structure relative to the second sub-layer, and the indentation structure can make the ink droplets of inkjet printing be able to Spread more evenly in the opening, so as to reduce the coffee ring effect produced by the ink drop when it dries, thereby improving the display quality of the display backplane.
Description
technical field [0001] The present invention relates to the field of display technology, and in particular, the present invention relates to a display backplane and a display device. Background technique [0002] OLED (Organic Light Emitting Diode) display devices have the advantages of self-luminescence, fast response, wide viewing angle, high brightness, bright colors and thinness, and are widely used in display technology. Among various OLED film forming processes, ink jet printing (IJP) is a new process technology that can directly perform patterned thin film deposition. In the process of inkjet printing, the energy layer material is usually dissolved in a designated solvent as a solute to prepare ink, and then the ink is printed on the substrate using an inkjet printer, and the printed substrate is dried, baked, etc. The process is to make the solvent in the ink volatilize, and finally the OLED thin film deposited on the substrate can be obtained. However, during the ...
Claims
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IPC IPC(8): H01L27/32
CPCH10K59/122
Inventor 廖金龙
Owner HEFEI BOE ZHUOYIN TECH CO LTD