Full-color μled micro-display device without electrical contact and a manufacturing method therefor

Abstract

The present invention relates to a full-color μLED micro-display device without electrical contact and a manufacturing method therefor. The device includes a lower driving electrode and a reflective layer arranged on a surface of the lower transparent substrate, an upper driving electrode and a diffusion layer arranged on a surface of the upper transparent substrate, a wavelength down-conversion light-emitting layer and a blue μLED grain arranged between the upper and lower driving electrodes, and a control module and a color filter film; the upper and lower driving electrodes are in no electrical contact with the blue μLED grain, the control module is in an electrical contact with the upper and lower driving electrodes, and the control module provides an alternating driving signal for controlling the μLED grain to excite a first light source which is converted into a second light source after passing through the wavelength down-conversion light-emitting layer, and after passing through the reflective layer and the diffusion layer, the first and second light sources achieve the full-color μLED micro-display through the color filter film. The present invention can effectively avoid the complex process for manufacturing tricolor μLED chips in the full-color μLED device, as well as the complex bonding and mass transfer processes for the light-emitting chip and the driving chip, thereby shortening the cycle for manufacturing a μLED display, and cutting down the production cost.