OLED device and encapsulation method and display device thereof

Abstract

The invention provides an OLED device and an encapsulation method and a display device thereof. The encapsulation method comprises the steps of forming through holes in an area, between an area for forming glass cement and an area coated with UV adhesive, of a cover plate; adjusting the intensity of pressure in a paired box chamber into first intensity of pressure; folding a back plate and the cover plate on a base table in the paired box chamber; enabling the first intensity of pressure to be lower than the barometric pressure; regulating the intensity of pressure in the paired box chamber to the barometric pressure; curing the UV adhesive; regulating the intensity of pressure in the paired chamber to be second intensity of pressure, separating the cover plate from the base table, and enabling the second intensity of pressure to be lower than the barometric pressure and higher than the first intensity of pressure; encapsulating the through holes in the cover plate; sintering the glass cement. By means of the encapsulation method, the UV adhesive can be tightly compacted before the glass cement is sintered, and broken lines and bonding defects of the UV adhesive are avoided. Meanwhile, the intensity of pressure inside and outside a box of the sealed OLED device is made appropriate, so that the defects of cracks and damage caused by the fact that the glass cement are easily extruded under the effect of the difference of the intensity of pressure inside and outside the box are effectively overcome.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to an OLED device, a packaging method thereof, and a display device. Background technique [0002] OLED (Organic Light-Emitting Diode organic electrical laser display) devices have many outstanding properties such as ultra-thin, low cost, low power consumption, wide viewing angle, full curing, self-illumination, low driving voltage and flexible display. OLED will become A promising new generation of flat panel display technology. [0003] An OLED device is a display device that drives a luminescent material to emit light autonomously by an electric current. Since luminescent materials are very sensitive to temperature, air, and water, good packaging is crucial to the lifespan and picture quality of OLED devices. [0004] The existing mature packaging technology for small-sized OLED devices is glass glue packaging. The main packaging process steps are: 1. Screen printing g...

AI Technical Summary

Problems solved by technology

However, due to the brittle material of the glass glue, it is easy to cause cracks and damage under the extrusion of the large pressure difference between the inner and outer boxes of the above-mentioned box.

Images