OLED display device and manufacturing method thereof, color filter substrate and manufacturing method thereof

Abstract

The invention provides an OLED display device and a manufacturing method thereof, a color filter substrate and a manufacturing method thereof, and relates to the field of display technology, which can improve the display brightness of the display device and increase the display color gamut. Wherein the OLED display device includes: a TFT array substrate, a light-emitting structure layer arranged on the TFT array substrate, the light emitted by the light-emitting structure layer is infrared light; a light conversion layer located on the light-emitting structure layer, the light conversion layer includes A plurality of pixel areas, each pixel area is provided with at least three light conversion units of red light, green light and blue light; the red light conversion unit is formed by an up-conversion luminescent material that emits red light after being excited by infrared light; The conversion unit is formed by an up-conversion luminescent material that emits green light after being excited by infrared light; the blue light conversion unit is formed by an up-conversion luminescent material that emits blue light after being excited by infrared light. The OLED display device described above is used to display images.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to an OLED (Organic Light-Emitting Diode, Organic Light-Emitting Diode) display device and a manufacturing method thereof, a color filter substrate and a manufacturing method thereof. Background technique [0002] OLED display device is an active light-emitting display device, which has excellent characteristics such as high contrast, thin thickness, wide viewing angle, fast response speed, can be used for flexible panels, wide operating temperature range, simple structure and manufacturing process, etc., and is widely used. In mobile phones, PDA (Personal Digital Assistant, personal digital assistant), notebook computers, digital video cameras, DVD (Digital Versatile Disc, Digital Versatile Disc) machines, car audio and television and other fields. [0003] The structure of a traditional OLED display device mainly includes: a TFT (Thin Film Transistor, thin film transistor...

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Problems solved by technology

[0004] However, since monochromatic light is obtained by color-resistive filtering, the light transmittance of the above-mentioned color filter layer is low, resulting in low display brightness of the OLED display device.

Although there is currently a method of increasing the color resistance of W (white) color in the color filter layer to improve the display brightness, increasing the color resistance of W (white) color in the color filter layer will cause the reduction of the display color gamut. Small; in addition, there is also the use of quantum dots to form a color film layer, so that the light-emitting structure layer that can emit blue light or ultraviolet light emits light to stimulate the quantum dots in the color film layer to emit RGB monochromatic light. Although this method can improve display brightness , and increase the display color gamut, but the quantum dot material is expensive and easy to oxidize, resulting in an increase in the cost of the OLED display device, and the display stability is not high

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