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US 10,288,943 B2Granted
Black sealant composition, display device including the same, and method of manufacturing display device
AssigneeLG Display Co., Ltd.
InventorsChangwoo Chun, Jinwuk Kim, Byunggeol Kim, Sungwoo Kim, Kyungyeol Ryu
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Abstract
A black sealant composition includes magnetic nanoparticles including a core and a shell surrounding the core, conductive black particles having a black color, and a resin including the magnetic nanoparticles and the conductive black particles dispersed therein.
Claims6
A display device comprising:
- a display panel on a backlight unit, wherein the backlight unit includes a light guide plate, a bottom cover, and a lateral surface cover;
- and
- a black sealant including magnetic nanoparticles, conductive black particles, and a resin at a position between the display panel and the lateral surface cover to seal the display panel and the lateral surface cover,
- wherein the black sealant is further on a lateral surface of the display panel to seal the lateral surface of the display panel,
- and wherein the magnetic nanoparticles include a core and a shell surrounding the core, the conductive black particles comprise graphene having a black color, and the resin includes the magnetic nanoparticles and the conductive black particles dispersed therein;
- wherein the resin comprises about 80% by weight to about 90% by weight thermosetting epoxy resin and about 10% by weight to about 20% by weight acryl resin based on the total weight of the resin,
- wherein the black sealant is cured by using spinning and frictional heat of the magnetic nanoparticles,
- wherein the conductive black particles transfer heat generated by the magnetic nanoparticles to the resin to rapidly thermally cure the resin.
5 more elements
A method of manufacturing a display device, comprising:
- arranging a display panel on a backlight unit, wherein the backlight unit includes including a light guide plate, a bottom cover, and a lateral surface cover;
- applying a black sealant including magnetic nanoparticles, conductive black particles, and a resin at a position between the display panel and the lateral surface cover to seal the display panel and the lateral surface cover;
- applying the black sealant further to a lateral surface of the display panel to seal the lateral surface of the display panel;
- applying a magnetic field to the black sealant to spin the magnetic nanoparticles causing frictional heat;
- and
- curing the black sealant using frictional heat of the magnetic nanoparticles transferred by the conductive black particles to the resin,
- wherein the magnetic nanoparticles include a core and a shell surrounding the core, the conductive black particles comprise graphene having a black color, and the resin includes the magnetic nanoparticles and the conductive black particles dispersed therein;
- wherein the resin comprises about 80% by weight to about 90% by weight thermosetting epoxy resin by and about 10% by weight to about 20% by weight acryl resin based on the total weight of the resin.
5 more elements
Dependencies are inferred from the claim text.