Non-direct electrical contact orientation ordered nLED light-emitting display device

Abstract

The invention relates to a non-direct electrical contact orientation ordered nLED light-emitting display device. The device comprises in order from top to bottom: an upper driving electrode substrate,an upper driving electrode, a nano LED crystal grain sheet, a lower driving electrode and a lower driving electrode substrate. The device further comprises an alternating-current driving control module, the two ends of the alternating-current driving control module are respectively connected with the upper driving electrode and the lower driving electrode, the nano LED crystal grain sheet is formed by orderly arranging a plurality of nano LED crystal grains, so that when the nano LED crystal grain sheet is placed between the electrode substrates, and the light-emitting layer of each nano LEDcrystal grain is parallel to the electrode substrates and is perpendicular to the direction of an electric field; and at least one of the upper driving electrode and the lower driving electrode is isolated from the nano LED crystal grains through an insulating dielectric layer, and the nano LED crystal grains are lightened through electromagnetic coupling under an alternating driving signal. According to the invention, an indirect electrical contact method is adopted to achieve ordered nLED light-emitting display, a huge transfer process of micron-scale and nano-scale LEDs can be omitted, andthe process cost is effectively reduced.

Description

technical field [0001] The present invention and the field of integrated semiconductor light-emitting and display, in particular, relate to a non-direct electrical contact orientation ordered nLED light-emitting display device. Background technique [0002] LED display has the advantages of self-illumination, high brightness and luminous efficiency, low power consumption, high stability, etc., and is widely used in various occasions. With the reduction of LED chip size and pixel pitch, LED display is expected to achieve flexible, highly transparent, interactive, and modular splicing display, which is considered to be a revolutionary display technology with full functions and applications. Among them, μLED display is a new type of display technology consisting of an array of micron-scale LED light-emitting pixels, and nLED (nano LED) display is a new type of display technology consisting of an array of nano-scale LED light-emitting pixels. At present, major domestic and fore...

AI Technical Summary

Problems solved by technology

However, when the size of the LED chip is small to a certain extent, the operation of the chip becomes more and more difficult, especially for nLED grains, how to orderly transfer the grains with different luminescent colors to the circuit substrate through various mechanical tools, And it is an important technical challenge to achieve precise electrical contact between μLED grains and driving electrodes through precise alignment and bonding.

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