Color filtering substrate, fabrication method thereof and white organic light-emitting diode (WOLED) display

Abstract

The invention provides a color filtering substrate, a fabrication method thereof and a white organic light-emitting diode (WOLED) display. The color filtering substrate comprises a substrate, a pixeldefining layer and a plurality of filtering patterns, wherein a plurality of openings are formed in positions, corresponding to a plurality of sub-pixel regions, on the pixel defining layer, the plurality of filtering patterns are arranged in the plurality of openings of the pixel defining layer and on the substrate, each filtering patter comprises a quantum-dot layer and a filtering layer which are sequentially arranged on the substrate. Only a photoetching process in one time is needed to fabricate the openings during fabrication of the color filtering substrate, the quantum-dot layers and the filtering layers of the filtering patterns both can be fabricated in the openings by a mode of forming a film form a solution, the process is effectively simplified, and the production efficiency is improved; and moreover, when the color filtering substrate is applied to the WOLED display, the light-emitting efficiency and the color gamut of the WOLED display can be effectively improved, and the product quality is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a color filter substrate, a manufacturing method thereof, and a WOLED display. Background technique [0002] Organic light-emitting diode (Organic Light-Emitting Diode, OLED) display, also known as organic electroluminescent display, is a new type of flat panel display, because of its simple preparation process, low cost, low power consumption, high luminance, and work It has a wide range of temperature adaptation, light and thin volume, fast response speed, and it is easy to realize color display and large-screen display, easy to realize matching with integrated circuit driver, easy to realize flexible display, etc., so it has broad application prospects. [0003] According to the driving method, OLED can be divided into two categories: passive matrix OLED (Passive Matrix OLED, PMOLED) and active matrix OLED (Active Matrix OLED, AMOLED), namely direct addressing and thin film t...

AI Technical Summary

Problems solved by technology

The color-resist unit in the common manufacturing method of color filter substrate is manufactured by evaporation process, which requires multiple photolithography processes to complete, and the manufacturing process is complicated.

However, the process of fabricating color-resist units by non-evaporation processes such as inkjet printing is still immature, and when applied to high-resolution WOLED displays, due to the tight arrangement of pixels in high-resolution WOLED displays, color mixing is prone to occur during preparation. Phenomena that affect product quality

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