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Preparation method of display panel, display panel and display device

A technology for display panels and substrates, used in semiconductor/solid-state device manufacturing, electrical components, electrical solid-state devices, etc., can solve the problems of mura brightness, color mixing, non-uniformity, etc., to prevent overflow of isolation column grooves and reduce color mixing. and the effect of the probability of the mura phenomenon

Inactive Publication Date: 2021-02-26
XIANYANG CAIHONG OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the inkjet printing process of organic electroluminescent devices, the pixel defining layer (Bank structure) is very important for the printing yield and the uniformity of film formation in the later stage. During the inkjet printing process, the ink overflows the isolation column grooves and easily causes color mixing and mura (uneven brightness) phenomenon

Method used

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  • Preparation method of display panel, display panel and display device
  • Preparation method of display panel, display panel and display device
  • Preparation method of display panel, display panel and display device

Examples

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Embodiment 1

[0038] At present, the mature display technology on the market is LCD (liquid crystal display) technology, while new display technologies such as OLED (organic electroluminescence display) and QLED (quantum dot electroluminescence display) use self-luminescence to bring high contrast and high color. Wide field of view, wide viewing angle, low energy consumption, low response time, and its advantages of being lighter and thinner have attracted everyone's attention.

[0039] At present, display giants such as Samsung and LG have launched large-size OLED TV products, and even OLED TV products with curved screens are available. However, due to the high cost of large-size OLED products, the mass-produced OLED displays on the market are still mainly small-sized, and the number of large-sized OLEDs is small. Facing the cruel market environment, it is difficult to form a competitive advantage. The main factor limiting large-size OLED displays is the fabrication of OLED devices. At pr...

Embodiment 2

[0049] In order to better describe the manufacturing method of the display panel in the first embodiment, this embodiment specifically describes the manufacturing method of the display panel on the basis of the above-mentioned embodiments.

[0050] See Figure 2a-Figure 2i , Figure 2a-Figure 2i It is a schematic diagram of a method for manufacturing a display panel provided by an embodiment of the present invention. The method for preparing the display panel may specifically include:

[0051] Step 1. Provide a base substrate 10. The base substrate 10 is a TFT substrate. The TFT substrate can be a rigid TFT substrate or a flexible TFT substrate. The TFT substrate can specifically include a substrate, a TFT array layer, and a flat surface covering the TFT array layer. layer, and a plurality of anodes corresponding to a plurality of pixel regions arranged on the planarization layer, and the TFT array layer may specifically include a plurality of TFTs (ThinFilm Transistor, thin...

Embodiment 3

[0073] This embodiment also provides a display panel on the basis of the above embodiments, the display panel is prepared according to the preparation method of any one of the above embodiments, please refer to image 3 , image 3 It is a schematic structural diagram of a display panel provided by an embodiment of the present invention. The display panel may specifically include a base substrate 10, a lower bank structure 40 with isolation column grooves 50, an upper bank structure 80, and a color resist layer 90, wherein:

[0074] The base substrate 10 is a TFT substrate, and the TFT substrate may specifically include a glass substrate, a TFT array layer, a planarization layer covering the TFT array layer, and a plurality of anodes disposed on the planarization layer corresponding to a plurality of pixel regions.

[0075] The lower bank structure 40 with isolation post grooves 50 is located on the base substrate 10 , and the lower bank structure 40 has a hydrophilic property....

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Abstract

The invention discloses a preparation method of a display panel. The preparation method comprises the following steps: providing a substrate; forming a lower-layer bank structure with an isolation column groove on the substrate, wherein the lower-layer bank structure has a hydrophilic characteristic; and correspondingly forming an upper-layer bank structure on the lower-layer bank structure, wherein the upper-layer bank structure has a hydrophobic characteristic. The lower-layer bank structure of the display panel prepared by the invention has a hydrophilic characteristic, and meanwhile, the upper-layer bank structure has a hydrophobic characteristic, so that when a color resistance material is injected into the isolation column groove, ink can be effectively prevented from overflowing outof the isolation column groove, and the probability of color mixing and mura phenomena is reduced.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to a method for preparing a display panel, a display panel and a display device. Background technique [0002] The flat panel display device has many advantages such as thin body, power saving, and no radiation, and has been widely used. With the development of information technology, people's demand for flat-panel display devices has grown rapidly. In order to meet this demand, display devices represented by liquid crystal display devices (LCD, Liquid Crystal Display), plasma displays (PDP, Plasma Display Panel), and organic light emitting display devices (OLED, Organic Light Emitting Diode) have been developed rapidly. . [0003] Organic light-emitting display devices have attracted extensive attention due to their self-illumination, high brightness, wide viewing angle, high contrast ratio, flexibility, low energy consumption, no need for backlight, and fast respons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/56H01L27/32
CPCH10K59/35H10K59/122H10K71/135
Inventor 蔡奇哲汪红
Owner XIANYANG CAIHONG OPTOELECTRONICS TECH CO LTD