Display device including fine bump for adjusting attachment and detachment and manufacturing method therefor
Provided are a display device including micro protrusions for attachment and detachment control, having supplemented functions, such as control of adhesive strength for attachment and detachment, the prevention of attachment of an alien substance, fingerprint prevention, the easy removal of bubbles, and a smooth application to a curved display when a window or touch screen is attached or detached, and a method of manufacturing the same. In the device and method, the display device including a window and a display and selectively including a touch screen includes an attachment and detachment layer positioned in any one of the window, the touch screen, and the display and having adhesive strength of 0.1 gf/25 mm to 500 gf/25 mm, and an attachment and detachment control layer positioned to face the attachment and detachment layer in any one of the window, the touch screen, and the display and having micro protrusions formed therein.
1. A display device comprising:
a display;
a touch screen attached to the display;
an attachment and detachment control layer attached to the touch screen;
an attachment and detachment layer detachably to the attachment and detachment control layer, the attachment and detachment layer having an adhesive strength of 0.1 gf/25 mm to 500 gf/25 mm; and
a window attached to the attachment and detachment layer,
wherein the attachment and detachment control layer includes an attachment and detachment control pattern formed towards the attachment and detachment layer, the attachment and detachment control pattern being divided into an uneven part having micro protrusions formed thereon and a flat part having no micro protrusion, and
wherein the attachment and detachment control pattern has a stripe form, a lattice form, a fence form, or a combination of a stripe form, a lattice form and a fence form.
2. The display device of claim 1 , wherein the attachment and detachment layer is formed of any one selected from a thermosetting resin of an acrylic polymer, a silicon-based polymer or an urethane-based polymer, an adhesive in which a cross linker is mixed with an ultraviolet curing resin, a mixture of the thermosetting resin and the adhesive, and a copolymer thereof.
3. The display device of claim 1 , wherein the attachment and detachment layer is burrowed into the micro protrusions of the attachment and detachment control layer to make transparent the attachment and detachment control layer.
4. The display device of claim 1 , wherein the attachment and detachment control layer comprises a fluoro-based resin or a silicon-based resin.
5. The display device of claim 1 , wherein the attachment and detachment control layer comprises:
a deposition layer made of titania (TiO 2 ) or silica (SiO 2 ), and
a layer comprising a fluoro-based resin or a silicon-based resin on the deposition layer.
6. The display device of claim 1 , wherein the attachment and detachment layer is configured to have an adhesive strength of 0.5 gf/25 mm to 500 gf/25 mm by the attachment and detachment control pattern of the attachment and detachment control layer.
7. The display device of claim 1 , wherein the micro protrusions have a cross section forming an angle, a curvature or a combination thereof.
8. The display device of claim 1 , wherein the micro protrusions are arranged in a line form, a lattice form, an island form, or a combination of a line form, a lattice form, an island form.
9. The display device of claim 1 , wherein the uneven part corresponds to a curved edge or a bent part.
10. A method of manufacturing a display device, the method comprising:
preparing a display;
attaching a touch screen to the display;
preparing an attachment and detachment control layer having an attachment and detachment control pattern, wherein the attachment and detachment control pattern is divided into an uneven part having micro protrusions formed thereon and a flat part having no micro protrusion, and the attachment and detachment control pattern has a stripe form, a lattice form, a fence form, or a combination of a stripe form, a lattice form and a fence form;
attaching the attachment and detachment control layer to the touch screen;
preparing an attachment and detachment layer having an adhesive strength of 0.1 gf/25 mm to 500 gf/25 mm;
detachably attaching the attachment and detachment layer to the attachment and detachment control layer in such a manner that the attachment and detachment control pattern is in contact with the attachment and detachment layer; and
attaching a window to the attachment and detachment layer.
11. The method of claim 10 , wherein the attachment and detachment layer is burrowed into the micro protrusions of the attachment and detachment control layer to make transparent the attachment and detachment control layer.
12. The method of claim 10 , wherein the micro protrusions have a cross section including an angle, a curvature, or a combination of an angle and a curvature.
13. The method of claim 10 , wherein the micro protrusions are arranged in a line form, a lattice form, an island form or a combination of a line form, a lattice form and an island form.