LED, manufacturing method thereof and display device

Abstract

The invention discloses a LED, a manufacturing method thereof and a display device. The LED comprises: a first electrode, a second electrode, a light-emitting layer between the first electrode and thesecond electrode, and a light extraction layer on a side of the second electrode away from the light-emitting layer; wherein the light extraction layer comprises a photoresponsive material. Since thecis-structure of the photoresponsive material can be easily converted into a trans-structure under ambient light conditions and the refractive index of the trans-structure of the photoresponsive material is greater than the refractive index of the cis-structure, the refractive index of the photoresponsive material increases under the effect of ambient light so that the refractive index of the light extraction layer containing the photoresponsive material may also increase. Thus, more light can be refracted from the LED, which effectively increases the light emission rate. Therefore, when theLED is used in outdoor high light environment, the brightness of the display device can be enhanced without increasing the driving voltage difference of the LED, and the standby time is not affected.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a light emitting diode, a manufacturing method thereof and a display device. Background technique [0002] Currently, displays using light-emitting diodes such as organic light-emitting diodes or quantum-dot light-emitting diodes as light-emitting elements generally suffer from poor luminous efficiency, resulting in low brightness. In order to solve this technical problem, in the prior art, a light extraction layer is added on the translucent electrode of the light emitting element to weaken the waveguide effect of the light emitted by the light emitting layer and improve the light output rate. Even so, when the display is used outdoors or in an environment with a brightness higher than that of the display, due to the excessively bright external ambient light, the brightness of the display is low, resulting in a poor display effect, which is not conducive to viewing by human eye...

AI Technical Summary

Problems solved by technology

Even so, when the display is used outdoors or in an environment higher than the brightness of the display, due to the external ambient light being too bright, there will still be a phenomenon that the display brightness is low and the display effect is not good, which is not conducive to human viewing.

At this time, the brightness of the display can only be increased by increasing the driving voltage difference of the light-emitting element, but this will increase the power consumption of the display and shorten the standby time.

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