Shock absorbing module and display device including the same
A shock absorbing module includes a shock absorbing layer at which the shock absorbing module is attachable to a display panel, the shock absorbing layer including a cushion layer including an adhesive polymer resin, and a hollow particle which is in the adhesive polymer resin, and an embossed adhesive layer with which the shock absorbing layer is attachable to the display panel, and a base layer. The shock absorbing module attached to the display panel disposes the shock absorbing layer between the display panel and the base layer.
1. A shock absorbing module, comprising:
a shock absorbing layer at which the shock absorbing module is attached to a surface of a display panel which is opposite to a display surface of the display panel, the shock absorbing layer comprising:
a self-adhesive cushion layer comprising an adhesive polymer resin, and a hollow particle which is in the adhesive polymer resin,
the self-adhesive cushion layer comprising the hollow particle which is in the adhesive polymer resin defining extended portions thereof spaced apart from each other, and
the extended portions which are defined by the self-adhesive cushion layer defining an embossed adhesive layer of the shock absorbing layer which is attached to the surface of the display panel, and
a base layer facing the shock absorbing layer.
2. The shock absorbing module of claim 1 , further comprising a light-blocking layer,
the shock absorbing module attached to the display panel disposes the self-adhesive cushion layer and the embossed adhesive layer between the display panel and the light-blocking layer.
3. The shock absorbing module of claim 1 , wherein the adhesive polymer resin within the self-adhesive cushion layer comprises at least one of acrylic polymer, urethane polymer, olefin polymer, imide polymer, amide polymer, ester polymer, isocyanate polymer, epoxy polymer, and silicone polymer.
4. The shock absorbing module of claim 1 , wherein the hollow particle within the self-adhesive cushion layer comprises a void portion and a shell which surrounds the void portion, the shell of the hollow particle comprising polymerized acrylic monomer or polymerized vinyl chloride monomer.
5. The shock absorbing module of claim 1 , wherein a density of the hollow particle ranges from about 0.08 g/cm 3 to about 0.40 g/cm 3 .
6. The shock absorbing module of claim 1 , wherein a weight percentage of the hollow particle to a total weight of the self-adhesive cushion layer ranges from about 0.5 wt % to about 20.0 wt %.
7. The shock absorbing module of claim 1 , wherein the hollow particle within the self-adhesive cushion layer has a mean diameter from about 10 μm to about 40 μm or a mean diameter from about 40 μm to about 80 μm.
8. The shock absorbing module of claim 1 , wherein
the hollow particle is provided in plural within the shock absorbing layer to define a plurality of hollow particles, and
the extended portions which define the embossed adhesive layer within the shock absorbing layer comprise a hollow particle among the plurality of hollow particles.
9. The shock absorbing module of claim 1 , wherein the self-adhesive cushion layer further comprises a light blocking material in the adhesive polymer resin.
10. The shock absorbing module of claim 9 , wherein
the light blocking material is a carbon black nanoparticle, and
a weight percentage of the carbon black nanoparticle to a total weight of the self-adhesive cushion layer ranges from about 0.5 wt % to about 5.0 wt %.
11. The shock absorbing module of claim 1 , wherein
the shock absorbing layer further comprises a film layer comprising polyimide, and
the shock absorbing module attached to the display panel disposes the embossed adhesive layer between the display panel and the film layer.
12. The shock absorbing module of claim 1 , wherein the base layer comprises a film layer, a metal layer and a graphite layer, which are sequentially stacked in a direction toward the shock absorbing layer.
13. The shock absorbing module of claim 12 , wherein within the base layer:
the film layer comprises polyethyleneterephthalate, and
the metal layer comprises copper.
14. A shock absorbing layer, comprising:
a self-adhesive cushion layer which is attached to a surface of a display panel which is opposite to a display surface of the display panel, the self-adhesive cushion layer comprising:
an adhesive polymer resin;
a hollow particle in the adhesive polymer resin, the hollow particle comprising a polymerized acrylic monomer or a polymerized vinyl chloride monomer; and
a carbon black nanoparticle in the adhesive polymer resin;
the self-adhesive cushion layer comprising the hollow particle and the carbon black nanoparticle which are in the adhesive polymer resin defining extended portions thereof spaced apart from each other, and
the extended portions which are defined by the self-adhesive cushion layer defining an embossed adhesive layer attached to the surface of the display panel.
15. The shock absorbing layer of claim 14 , wherein the adhesive polymer resin within the self-adhesive cushion layer comprises an acrylic resin.
16. The shock absorbing layer of claim 14 , wherein
a weight percentage of the carbon black nanoparticle to a total weight of the self-adhesive cushion layer ranges from about 0.5 wt % to about 5.0 wt %, and
a weight percentage of the hollow particle to a total weight of the adhesive polymer resin and the hollow particle ranges from about 0.5 wt % to about 20 wt %.
17. The shock absorbing layer of claim 14 , wherein
the hollow particle and the carbon black nanoparticle are each provided in plural within the shock absorbing layer to define a plurality of hollow particles and a plurality of carbon black nanoparticles, and
the extended portions which define the embossed adhesive layer comprise a hollow particle among the plurality of hollow particles and a carbon black nanoparticle among the plurality of carbon black nanoparticles.
18. The shock absorbing layer of claim 14 , wherein the hollow particle has a mean diameter from about 10 μm to about 80 μm.
19. A display device, comprising:
a display panel; and
a shock absorbing layer which is attached to a surface of the display panel which is opposite to a display surface of the display panel,
wherein
the shock absorbing layer comprises:
a self-adhesive cushion layer comprising:
an acrylic resin, and
a hollow particle which is in the acrylic resin, has a mean diameter from about 10 μm to about 80 μm, and comprises a polymerized acrylic monomer or a polymerized vinyl chloride monomer;
the self-adhesive cushion layer comprising the hollow particle defining extended portions spaced apart from each other, and
the extended portions which are defined by the self-adhesive cushion layer defining an embossed adhesive layer of the shock absorbing layer,
the embossed adhesive layer being attached to the surface of the display panel.
20. The display device of claim 19 , wherein the display panel comprises:
a light-emitting device;
a thin encapsulation layer on the light-emitting device; and
an input sensing sensor on the thin encapsulation layer.