White light OLED device

Abstract

The invention relates to a white light OLED (Organic Light Emitting Diode) device. The structure includes a substrate, a packaging layer in sealed connection with the substrate so as to form a packaging space, and an anode conducting layer, a blue ray light emitting layer and a cathode conducting layer arranged in the packaging space and formed on the substrate successively. The white light OLED device also includes a quantum dot light emitting layer arranged between the packaging layer and the cathode conducting layer. The blue ray light emitting layer emits blue rays and excites the quantum dot light emitting layer to emit light. The blue rays and light emitted by the quantum dot light emitting layer are mixed into white light. In the scheme, by adopting the combination of the blue ray light emitting layer and the quantum dot light emitting layer, the OLED light color stability is improved and the OLED service lifetime is prolonged.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a white OLED light-emitting device. Background technique [0002] At present, the world's lighting industry is developing rapidly. The continuous research and development of new lighting products and the continuous emergence of new technologies have driven the leapfrog development of the lighting industry. From traditional incandescent lamps, to fluorescent tubes, to today's LED (Light-Emitting Diode) and OLED (Organic Light-Emitting Diode, Organic Light-Emitting Diode), etc., all show the rapid development of lighting technology. Among them, OLED has the characteristics of low cost, full solid state, active light emission, high brightness, wide viewing angle, thin thickness, low voltage DC drive, low power consumption, wide operating temperature range, and soft screen lighting. It is called a new generation of energy-saving Environmental lighting products. [0003] ...

AI Technical Summary

Problems solved by technology

However, in this kind of light-emitting device, the color conversion layer is usually deposited on the back of the anode conductive layer, which makes the thickness of the whole device thicker, which is not conducive to the thinning and thinning of white light lighting, and causes the light emitted by the OLED light-emitting layer to pass through the anode for conduction. The color conversion layer can only be reached after the anode conductive layer, and the circuit design of the anode conductive layer will block the light output of the OLED light-emitting layer, resulting in a small aperture ratio and weak light output performance of the OLED.

[0005] In addition, the color conversion layer is usually made of organic dyes and phosphors. During long-term use, the color conversion layer made of the above materials has poor light and color stability and a low lifespan.

Images