Color film substrate for OLED and preparation method thereof, and OLED display device

Abstract

The invention discloses a color film substrate for an OLED and a preparation method thereof, and an OLED display device. The color film substrate includes a substrate and multiple color resist blocks,wherein the multiple color resist blocks are located on the substrate, colors of the multiple color resist blocks are not completely the same, the multiple color resist blocks respectively includes afirst color resistance portion and a second color resistance portion, the orthographic projection of the second color resistance portion on the substrate is located at the center of the orthographicprojection of the color resistance block on the substrate, and the transmittance of a material forming the second color resist portion to the light emitted by the OLED is lower than the transmittanceof a material forming the first color resist portion to the light emitted by the OLED. The color film substrate is advantaged in that the structure is simple, the OLED display device is made to be less prone to a pixel edge darkening phenomenon, uniformity of display brightness is strong, and the display effect is good.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a color filter substrate for OLED, a preparation method thereof, and an OLED display device. Background technique [0002] At present, organic light-emitting diode (Organic Light-Emitting Diodes, OLED) display devices have the advantages of self-illumination, wide viewing angle, high contrast, etc., and are widely used in smart products such as mobile phones, TVs, and notebook computers. In OLED display devices, the deposition methods of thin films in organic electroluminescent devices (OLEDs) mainly include vacuum evaporation and solution process. The utility model has the advantages of high utilization rate, low energy consumption, low cost, simple device structure and can be used for the preparation of large-area display, so it has wide application and development prospects. However, in the process of inkjet printing the light emitting layer of the OLED display devic...

AI Technical Summary

Problems solved by technology

However, in the process of inkjet printing the light emitting layer of the OLED display device, the solvent at the edge of the inkjet printing light emitting layer has a certain deviation in the thickness of the edge of the light emitting layer due to the difference in drying rate, thus causing the OLED display device to appear in use. Phenomenon where pixel edges are darker

[0003] Therefore, the relevant technologies of the existing OLED display devices still need to be improved.

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