Display substrate and preparation method thereof, display device and ink-jet printing method
A display substrate and printing liquid technology, which is applied in semiconductor/solid-state device manufacturing, electrical components, electric solid-state devices, etc. It can solve the problems of low volume ratio of pixel area, influence of display device life and display effect, uneven film formation, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
no. 1 example
[0047] figure 1 A cross-sectional view of a substrate is shown for an embodiment of the present invention; figure 2 A top view of a substrate is shown for an embodiment of the present invention. Such as figure 1 and figure 2 As shown, the display substrate in the embodiment of the present invention includes a base substrate 10, on which a pixel defining layer 11 is arranged, and a pixel region 12 for accommodating printing droplets is formed between the pixel defining layers 11, and the pixel region 12 forms There are two layers of stepped holes 13 arranged in a stepped shape, and a retaining wall 14 is arranged above the stepped holes 13 to separate adjacent steps of the stepped holes 13 .
[0048] In the display substrate provided by the embodiment of the present invention, by forming stepped holes in the pixel area, the volume ratio of the pixel area to accommodate printing droplets is increased without increasing the height of the pixel defining layer, and the effecti...
no. 2 example
[0058] Based on the technical idea of the foregoing embodiments, the embodiments of the present invention further provide a method for preparing a display substrate, so as to prepare the display substrate of the foregoing embodiments.
[0059] The embodiment of the present invention shows that the preparation method of the substrate includes:
[0060] 1) Forming a stepped hole on the base substrate; forming the stepped hole on the base substrate includes: forming a flat layer on the base substrate, and forming two layers of stepped holes arranged in steps on the flat layer through a patterning process. Wherein, the stepped hole includes a first step and a second step, the first step is located in the middle of the pixel area, and the second step is higher than the first step and is located on both sides of the first step.
[0061] 2) A pixel defining layer is formed on the flat layer of the base substrate; wherein, the pixel defining layer is arranged around the stepped hole...
no. 3 example
[0074] Figure 5 It is a schematic diagram of the structure after dripping printing droplets into the pixel area in the existing inkjet printing method; Figure 6 It is a schematic diagram of the structure after film formation in the pixel region by the existing inkjet printing method. Such as Figure 5 with Figure 6 As shown, in the existing inkjet printing process, in order to ensure that the printing droplets can accurately enter the pixel area and prevent the droplets from falling outside the specified pixel area, it is necessary to ensure that there is a safe distance for the printing droplets to enter the pixel area (keep out), and at the same time, in order to fully spread the printing droplets, different printing droplets must be hit at different places. If the printing droplets hit the same position, it is easy to overflow, and it is found in the actual process that the printing Insufficient wetting of the droplets at the four corners of the pixel area (Dewetting)...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More