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US 12,703,172 B2Granted
Display device and carrier film
AssigneeSamsung Display Co., Ltd.
InventorsKicheol Song, Youngmoon Kim, Nari Ahn
Life of this patent
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Abstract
A display device includes a display panel, a panel protective film disposed below the display panel, and a first adhesive layer disposed between the display panel and the panel protective film, where a test speed of a tensile test of the panel protective film is about 5 millimeters per minute (mm/min), Young's modulus of the panel protective film is measured in a range of strain in which strain of the panel protective film is about 0.05 percent (%) to about 0.5%, and the panel protective film has the Young's modulus of about 4324 megapascals (MPa) to about 4792 MPa at about 25 degrees Celsius.
Claims14
A carrier film comprising:
- a first protective film;
- a second protective film disposed on the first protective film;
- a panel protective film disposed between the first protective film and the second protective film;
- a dummy adhesive layer disposed between the first protective film and the panel protective film;
- a first adhesive layer disposed between the panel protective film and the second protective film;
- and
- a release agent coated on a bottom surface of the second protective film facing the panel protective film, the release agent having a thickness less than a thickness of the second protective film,
- wherein a test speed of a tensile test of the panel protective film is about 5 millimeters per minute, and Young's modulus of the panel protective film is measured in a range of strain in which strain of the panel protective film is about 0.05 percent to about 0.5 percent,
- the panel protective film has the Young's modulus of about 4324 megapascals to about 4792 megapascals at about 25 degrees Celsius, and has the Young's modulus of about 3646 megapascals to about 3924 megapascals at about 85 degrees Celsius,
- an adhesive strength of the first adhesive layer is greater than an adhesive strength of the dummy adhesive layer so that the dummy adhesive layer adheres to the first protective film more strongly than to the panel protective film, and
- when the second protective film is separated, the first adhesive layer remains on an upper surface of the panel protective film, the first adhesive layer having a stronger adhesive strength than the dummy adhesive layer is attached to a lower surface of a substrate of the display panel, and then the dummy adhesive layer having a weaker adhesive strength than the first adhesive layer and the first protective film are removed from the panel protective film.
8 more elements
A carrier film comprising:
- a first protective film;
- a second protective film disposed on the first protective film;
- a panel protective film disposed between the first protective film and the second protective film;
- a dummy adhesive layer disposed between the first protective film and the panel protective film;
- a first adhesive layer disposed between the panel protective film and the second protective film;
- and
- a release agent coated on a bottom surface of the second protective film facing the panel protective film, the release agent having a thickness less than a thickness of the second protective film,
- wherein the panel protective film has a thickness of about 10 micrometers to about 50 micrometers, the first adhesive layer has a thickness of about 5 micrometers to about 18 micrometers, the first protective film has a thickness of about 30 micrometers to about 75 micrometers, and the dummy adhesive layer has a thickness of about 1 micrometers to about 10 micrometers,
- an adhesive strength of the first adhesive layer is greater than an adhesive strength of the dummy adhesive layer so that the dummy adhesive layer adheres to the first protective film more strongly than to the panel protective film, and
- when the second protective film is separated, the first adhesive layer remains on an upper surface of the panel protective film, the first adhesive layer having a stronger adhesive strength than the dummy adhesive layer is attached to a lower surface of a substrate of the display panel, and then the dummy adhesive layer having a weaker adhesive strength than the first adhesive layer and the first protective film are removed from the panel protective film.
7 more elements
Dependencies are inferred from the claim text.