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Manufacturing method of display panel, display panel and display device

A technology for display panels and manufacturing methods, applied in semiconductor/solid-state device manufacturing, electrical components, electric solid-state devices, etc., can solve problems such as color mixing, mura brightness, unevenness, etc., to reduce the probability of color mixing and mura phenomena, and prevent The effect of overflowing pixel pits

Active 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, during the inkjet printing process of organic electroluminescent devices, the pixel definition layer (Bank structure) is very important for the printing yield and the uniformity of film formation in the later stage. Ink overflowing pixel pits during inkjet printing can easily cause color mixing and mura (uneven brightness)

Method used

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

Examples

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Embodiment 1

[0035] 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.

[0036] 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

[0046] 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.

[0047] See Figure 2a-Figure 2f , Figure 2a-Figure 2f It is a schematic diagram of a method for manufacturing a display panel provided by an embodiment of the present invention. The manufacturing method of the display panel may specifically include:

[0048] Step 1. Provide a base substrate 10. The base substrate 10 is a TFT substrate. 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 pixels arranged on the planarization layer. A plurality of anodes corresponding to the region, the TFT array layer can specifically include a plurality of TFTs (Thin Film Transistor, thin film transistors), scanning signal lines (or gate lines) for transmi...

Embodiment 3

[0070] This embodiment also provides a display panel on the basis of the above embodiments, the display panel is manufactured according to the manufacturing method of any one of the above embodiments, please refer to image 3 , the display panel may specifically include a base substrate 10, a final photoresist layer having pixel pits 50, and a color resist layer 70, wherein:

[0071] 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.

[0072] The final photoresist layer is located on the base substrate 10, and the material of the final photoresist layer is a negative photoresist material mixed with photosensitive materials, and the final photoresist layer includes a first photoresist layer and a photoresist layer located on the first photoresist...

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Abstract

The invention discloses a manufacturing method of a display panel. The manufacturing method comprises the following steps: providing a substrate; forming a first photoresist layer with pixel pits on the substrate through first exposure, wherein the material of the first photoresist layer comprises a negative photoresist material mixed with a photosensitive material; enabling the first photoresistlayer to be exposed for the second time to form a final photoresist layer, wherein the final photoresist layer comprises the remaining part of the first photoresist layer and a second photoresist layer located on the remaining part of the first photoresist layer, and the hydrophilic characteristics of the first photoresist layer and the second photoresist layer are different. The photosensitive material is mixed in the negative photoresist material, in the second exposure process, the upper layer part of the negative photoresist material receives more illumination, the photosensitive materialreacts under the illumination condition to become hydrophobic, and the lower layer part of the negative photoresist material is slightly influenced by illumination and still has the hydrophilic characteristic. When the color resistance material is injected into the pixel pits, ink can be effectively prevented from overflowing out of the pixel pits, 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 manufacturing 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 res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/56H01L27/32
CPCH10K59/122H10K71/135H10K59/1201H10K71/00
Inventor 蔡奇哲汪红
Owner XIANYANG CAIHONG OPTOELECTRONICS TECH CO LTD
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