A micro-led manufacturing method for improving sub-pixel luminescence balance

Abstract

The invention relates to a Micro-LED manufacturing method for improving sub-pixel light emission balance. The method includes: coating photoresist on the light-receiving surface of an array substrate; adjusting a mask so that the light-transmitting area of ​​the mask corresponds to each Display pixels; keep the relative position of the mask and the array substrate unchanged, and use three groups of light sources with different incident directions to simultaneously pass through the light-transmitting area of ​​the mask to expose different groups of sub-pixels; wherein, each group of light sources corresponds to a A group of sub-pixels of the same color, the illumination intensity and illumination time of each group of light sources are determined according to the volume of quantum dot colloid to be filled in the sub-pixels of the corresponding color of the group of light sources; the photoresist on the array substrate is subjected to the first time using the developer solution. dissolve; dry the array substrate, and etch the sub-pixels to form three liquid storage tanks with different depths. The method is beneficial to improve the luminous brightness balance of the sub-pixels and improve the display effect.

Description

technical field [0001] The invention belongs to the field of displays, and in particular relates to a Micro-LED manufacturing method for improving sub-pixel light emission balance. Background technique [0002] Micro-LED (Micro Light Emitting Diode) is a new generation of display technology that is brighter and more efficient, but consumes less power than existing OLED (Organic Light Emitting Diode) technology. Micro-LED technology, the LED structure design is thinned, miniaturized, and arrayed, and its size is only about 1 to 10 μm. The biggest advantage of Micro-LED comes from the micron-level pitch, each pixel can be addressed and controlled and driven to emit light at a single point, long life, and wide range of applications. [0003] Quantum dot QDs are semiconductor nanoparticles composed of II-VI or III-V elements, and their size is generally between several nanometers to tens of nanometers. Due to the existence of the quantum confinement effect, the quantum dot mat...

AI Technical Summary

Problems solved by technology

[0004] In Micro-LED, when encapsulating the quantum dots corresponding to the three colors of red, green, and blue, the liquid storage tank (groove) of the same size is generally used, but the amount of colloidal encapsulation of quantum dots corresponding to different colors is different. When the groove is sealed with glue, the thickness of the glue is also different, which further leads to uneven luminance of sub-pixels of different colors and poor display effect

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