oled display device

Abstract

The present invention provides an OLED display device. By arranging a plurality of protrusions on the surface of the cover substrate close to the OLED device, and covering the outer surface of the cover substrate and the plurality of protrusions with a heat-conducting layer, the thickness of the cover is increased. Heat dissipation area and heat dissipation efficiency prevent heat accumulation from reducing the service life of OLED devices, and make the cover plate have better mechanical strength; by coating on the outside of the sealant, the area other than the sealant on the cover plate, and the area other than the sealant on the substrate The first heat-conducting light-shielding layer including graphene and light-shielding material, and the second heat-conducting light-shielding layer is coated on the bottom of the substrate corresponding to the area other than the OLED device, so as to avoid light leakage around the OLED display device and enhance the sealing performance of the OLED display device, which can effectively prevent The intrusion of external water vapor into the OLED device affects its service life, and because the graphene material has good thermal conductivity and electrical conductivity, the heat dissipation efficiency of the OLED display device is further improved, and at the same time, it can eliminate static electricity on the OLED display device and improve product quality.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an OLED display device. Background technique [0002] Organic light-emitting diode (Organic Light-Emitting Diode, OLED) display, also known as organic electroluminescent display, is a new type of flat panel display device, due to its simple preparation process, low cost, low power consumption, high luminance, Wide range of working temperature, light and thin size, fast response speed, easy to realize color display and large-screen display, easy to realize matching with integrated circuit driver, easy to realize flexible display, etc., so it has broad application prospects. [0003] OLED generally includes: a substrate, an anode disposed on the substrate, a hole injection layer (Hole Inject Layer, HIL) disposed on the anode, a hole transport layer (Hole Transport Layer, HTL) disposed on the hole injection layer, a device The light-emitting layer on the hole transport layer, the ...

AI Technical Summary

Problems solved by technology

However, the OLED display device has a poor sealing effect and can only block external water vapor to a certain extent. Part of the water vapor will still invade the OLED device 200 through the sealant 400 and shorten its life. Low, heat accumulation will still be generated, which will directly shorten the life of the OLED device, and cause the water vapor in each film layer to be heated and discharged, which will aggravate the shortening of the life of the OLED device

South Korea's LG Company currently uses full-cathode bonding adhesive plus transparent or non-transparent metal cover to realize the packaging and bonding of OLED devices, which still has insufficient sealing effect and heat dissipation efficiency. At the same time, due to the use of metal cover, the cost of the product Increase

Images