JP7402275B2 - ディスプレイプロテクタ - Google Patents
ディスプレイプロテクタ Download PDFInfo
- Publication number
- JP7402275B2 JP7402275B2 JP2022094948A JP2022094948A JP7402275B2 JP 7402275 B2 JP7402275 B2 JP 7402275B2 JP 2022094948 A JP2022094948 A JP 2022094948A JP 2022094948 A JP2022094948 A JP 2022094948A JP 7402275 B2 JP7402275 B2 JP 7402275B2
- Authority
- JP
- Japan
- Prior art keywords
- edge
- stress
- adhesive layer
- layer
- glass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000001012 protector Effects 0.000 title claims description 97
- 239000012790 adhesive layer Substances 0.000 claims description 159
- 239000011521 glass Substances 0.000 claims description 146
- 239000010410 layer Substances 0.000 claims description 124
- 238000003860 storage Methods 0.000 claims description 49
- 239000000853 adhesive Substances 0.000 claims description 48
- 230000001070 adhesive effect Effects 0.000 claims description 48
- 239000000463 material Substances 0.000 claims description 22
- 239000011247 coating layer Substances 0.000 claims description 10
- 239000004925 Acrylic resin Substances 0.000 claims description 6
- 229920000178 Acrylic resin Polymers 0.000 claims description 6
- 229920001225 polyester resin Polymers 0.000 claims description 6
- 239000004645 polyester resin Substances 0.000 claims description 6
- 229920005749 polyurethane resin Polymers 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 4
- 238000013459 approach Methods 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 189
- -1 isocyanate compound Chemical class 0.000 description 71
- 239000000178 monomer Substances 0.000 description 43
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 21
- 239000012948 isocyanate Substances 0.000 description 20
- 239000000243 solution Substances 0.000 description 14
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 13
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- 230000000052 comparative effect Effects 0.000 description 12
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- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 5
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- 125000000217 alkyl group Chemical group 0.000 description 5
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
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- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 5
- 229920001296 polysiloxane Polymers 0.000 description 5
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 4
- LCZVSXRMYJUNFX-UHFFFAOYSA-N 2-[2-(2-hydroxypropoxy)propoxy]propan-1-ol Chemical compound CC(O)COC(C)COC(C)CO LCZVSXRMYJUNFX-UHFFFAOYSA-N 0.000 description 4
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 4
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 4
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 4
- 230000003666 anti-fingerprint Effects 0.000 description 4
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 description 4
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- 239000004814 polyurethane Substances 0.000 description 4
- 229920002635 polyurethane Polymers 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
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- 235000000126 Styrax benzoin Nutrition 0.000 description 3
- 235000008411 Sumatra benzointree Nutrition 0.000 description 3
- 239000007983 Tris buffer Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 3
- 125000003545 alkoxy group Chemical group 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 229960002130 benzoin Drugs 0.000 description 3
- 125000005442 diisocyanate group Chemical group 0.000 description 3
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
- 235000019382 gum benzoic Nutrition 0.000 description 3
- ACCCMOQWYVYDOT-UHFFFAOYSA-N hexane-1,1-diol Chemical compound CCCCCC(O)O ACCCMOQWYVYDOT-UHFFFAOYSA-N 0.000 description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 3
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
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- 238000005096 rolling process Methods 0.000 description 3
- 125000000542 sulfonic acid group Chemical group 0.000 description 3
- AZYRZNIYJDKRHO-UHFFFAOYSA-N 1,3-bis(2-isocyanatopropan-2-yl)benzene Chemical compound O=C=NC(C)(C)C1=CC=CC(C(C)(C)N=C=O)=C1 AZYRZNIYJDKRHO-UHFFFAOYSA-N 0.000 description 2
- ATOUXIOKEJWULN-UHFFFAOYSA-N 1,6-diisocyanato-2,2,4-trimethylhexane Chemical compound O=C=NCCC(C)CC(C)(C)CN=C=O ATOUXIOKEJWULN-UHFFFAOYSA-N 0.000 description 2
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 2
- AOPDRZXCEAKHHW-UHFFFAOYSA-N 1-pentoxypentane Chemical compound CCCCCOCCCCC AOPDRZXCEAKHHW-UHFFFAOYSA-N 0.000 description 2
- 125000004200 2-methoxyethyl group Chemical group [H]C([H])([H])OC([H])([H])C([H])([H])* 0.000 description 2
- SZNYYWIUQFZLLT-UHFFFAOYSA-N 2-methyl-1-(2-methylpropoxy)propane Chemical compound CC(C)COCC(C)C SZNYYWIUQFZLLT-UHFFFAOYSA-N 0.000 description 2
- NJWGQARXZDRHCD-UHFFFAOYSA-N 2-methylanthraquinone Chemical compound C1=CC=C2C(=O)C3=CC(C)=CC=C3C(=O)C2=C1 NJWGQARXZDRHCD-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 description 2
- ZAFNJMIOTHYJRJ-UHFFFAOYSA-N Diisopropyl ether Chemical compound CC(C)OC(C)C ZAFNJMIOTHYJRJ-UHFFFAOYSA-N 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
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- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 150000005215 alkyl ethers Chemical class 0.000 description 2
- 125000003368 amide group Chemical group 0.000 description 2
- 125000006267 biphenyl group Chemical group 0.000 description 2
- 235000019437 butane-1,3-diol Nutrition 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 2
- AQEFLFZSWDEAIP-UHFFFAOYSA-N di-tert-butyl ether Chemical compound CC(C)(C)OC(C)(C)C AQEFLFZSWDEAIP-UHFFFAOYSA-N 0.000 description 2
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical compound C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 2
- POLCUAVZOMRGSN-UHFFFAOYSA-N dipropyl ether Chemical compound CCCOCCC POLCUAVZOMRGSN-UHFFFAOYSA-N 0.000 description 2
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- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
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- 235000011187 glycerol Nutrition 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 2
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- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- NUKZAGXMHTUAFE-UHFFFAOYSA-N methyl hexanoate Chemical compound CCCCCC(=O)OC NUKZAGXMHTUAFE-UHFFFAOYSA-N 0.000 description 2
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000002560 nitrile group Chemical group 0.000 description 2
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 2
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
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- 125000000027 (C1-C10) alkoxy group Chemical group 0.000 description 1
- 125000000008 (C1-C10) alkyl group Chemical group 0.000 description 1
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- UFUXVJFOILLERS-UHFFFAOYSA-N 2,2-dimethylpropane-1,3-diol;prop-2-enoic acid Chemical compound OC(=O)C=C.OCC(C)(C)CO UFUXVJFOILLERS-UHFFFAOYSA-N 0.000 description 1
- BTJPUDCSZVCXFQ-UHFFFAOYSA-N 2,4-diethylthioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC(CC)=CC(CC)=C3SC2=C1 BTJPUDCSZVCXFQ-UHFFFAOYSA-N 0.000 description 1
- LCHAFMWSFCONOO-UHFFFAOYSA-N 2,4-dimethylthioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC(C)=CC(C)=C3SC2=C1 LCHAFMWSFCONOO-UHFFFAOYSA-N 0.000 description 1
- GFRUDODCZTYECG-UHFFFAOYSA-N 2,5-bis(isocyanatomethyl)-2-(3-isocyanatopropyl)bicyclo[2.2.1]heptane Chemical compound C1C2C(CCCN=C=O)(CN=C=O)CC1C(CN=C=O)C2 GFRUDODCZTYECG-UHFFFAOYSA-N 0.000 description 1
- UMLWXYJZDNNBTD-UHFFFAOYSA-N 2-(dimethylamino)-1-phenylethanone Chemical compound CN(C)CC(=O)C1=CC=CC=C1 UMLWXYJZDNNBTD-UHFFFAOYSA-N 0.000 description 1
- XOGPDSATLSAZEK-UHFFFAOYSA-N 2-Aminoanthraquinone Chemical compound C1=CC=C2C(=O)C3=CC(N)=CC=C3C(=O)C2=C1 XOGPDSATLSAZEK-UHFFFAOYSA-N 0.000 description 1
- DZZAHLOABNWIFA-UHFFFAOYSA-N 2-butoxy-1,2-diphenylethanone Chemical compound C=1C=CC=CC=1C(OCCCC)C(=O)C1=CC=CC=C1 DZZAHLOABNWIFA-UHFFFAOYSA-N 0.000 description 1
- ZCDADJXRUCOCJE-UHFFFAOYSA-N 2-chlorothioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC(Cl)=CC=C3SC2=C1 ZCDADJXRUCOCJE-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
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Description
前記透明基材層110は、対向する2つの主表面である第1表面110aと第2表面110bとを有する。
前記第1応力緩和粘着層120aと前記第2応力緩和粘着層120bは、それぞれ独立して、アクリル系重合体またはポリシロキサン化合物を含んでもよい。
前記超薄ガラス(UTG)層130は、約25μmないし70μmの厚みを有する強化ガラス素材からなる層であってもよい。一部実施例において、前記超薄ガラス(UTG)層130は、約25μmないし約70μm、約30μmないし70μm、約32μmないし70μm、約34μmないし65μm、約36μmないし60μm、約38μmないし55μm、約40μmないし50μm、約25μmないし約65μm、約25μmないし約60μm、約25μmないし約55μm、約25μmないし約50μm、またはそれら数値間の任意の範囲の厚みを有しうる。
各レシピによって製造したディスプレイプロテクタをフォールダブル装置に付着させた後、室温(約20℃ないし25℃)でフォールディング(折り畳み)とアンフォールディング(開き広げ)とを反復するテストを行った。
基材として、12μm厚のポリウレタンフィルムを使用し、第1応力緩和粘着層及び第2応力緩和粘着層の厚みと粘着力とを変化させ、前記フォールディング信頼性テストを行った。その結果、下記表2のような結果を得た。
該第1応力緩和粘着層及び該第2応力緩和粘着層として、それぞれ25μm厚を有するアクリル系OCA(optical clear adhesive)層を形成し、ポリウレタン透明基材層の厚みを変化させ、前記フォールディング信頼性テストを行った。その結果、下記表3のような結果を得た。
該第1応力緩和粘着層及び該第2応力緩和粘着層として、それぞれ25μm厚及び600gf/inの付着力を有するアクリル系OCA層を使用し、透明基材層として、12μm厚を有するポリウレタン透明基材層を使用し、その上に、多様な厚み(30μm、50μm、75μm)の超薄ガラス(UTG)層を形成し、ディスプレイプロテクタを製造し、前記フォールディング信頼性テストを行った。その結果、30μm厚と50μm厚との超薄ガラス(UTG)層を使用したときには、超薄ガラス(UTG)層の浮き上がりや破損がなかったが、75μm厚の超薄ガラス(UTG)層を使用したときには、超薄ガラス(UTG)層の浮き上がりと破損とがいずれも観察され、フォールダブル装置をL字型に維持するのに困難が伴った。
透明基材層として12μm厚を有するポリウレタン透明基材層を使用し、この両面に等しいまたは相異なる応力緩和粘着層を提供して前記フォールディング信頼性テストを遂行して浮き上がりを観察した。超薄ガラス(UTG)層の厚みは、30μmであった。テスト結果を下記表4に整理した。
該第1応力緩和粘着層及び該第2応力緩和粘着層の40℃における貯蔵モジュラスを変化させ、前記フォールディング信頼性テストを行い、浮き上がりを観察し、該テスト結果を下記表5に整理した。
12μm厚を有するポリエチレンテレフタレート(PET)透明基材層の両面に、1,200gf/inの付着力を有する第1応力緩和粘着層及び第2応力緩和粘着層をそれぞれ付着させた後、前記第1応力緩和粘着層上に、30μm厚を有する超薄ガラス(UTG)層を付着させた。前記ポリエチレンテレフタレート(PET)透明基材層と、該第1応力緩和粘着層及び該第2応力緩和粘着層との積層体は、フォールディング軸において、前記超薄ガラス(UTG)層に対し、-100μm、+50μm、+150μm及び+250μmのオフセットを有するように裁断され、それぞれの場合につき、デバイス1とデバイス2とにそれぞれ付着させ、フォールディングテストを行い、その結果を表6に整理した。また-100μmのオフセットを有する場合には、粘着剤を形成した場合と、形成していない場合とにつき、それぞれフォールディングテストを行った。
10 表示パネル
20 ローラ部
30 ハウジング部
90 下部カバー
100,100a,100b,100c,100d ディスプレイプロテクタ
110 透明基材層
120a 第1応力緩和粘着層
120b 第2応力緩和粘着層
130 超薄ガラス(UTG)層
140 飛散防止用コーティング層
150 粘着剤
Claims (25)
- 対向する第1表面及び第2表面を有する透明基材層と、
前記透明基材層の前記第1表面上に提供された第1応力緩和粘着層と、
前記透明基材層の前記第2表面上に提供された第2応力緩和粘着層と、
前記第1応力緩和粘着層上に提供された超薄ガラス(UTG)層と、を含み、
前記第1応力緩和粘着層の貯蔵モジュラスが-10℃で、0.03MPaないし0.18MPaであり、
前記透明基材層は、ポリウレタン樹脂、ポリエステル系樹脂及び(メト)アクリル系樹脂から選択された少なくとも1つを含む、ディスプレイプロテクタ。 - 前記第1応力緩和粘着層及び前記第2応力緩和粘着層が、それぞれ600gf/inないし1,500gf/inの粘着力を有することを特徴とする請求項1に記載のディスプレイプロテクタ。
- 前記第1応力緩和粘着層の貯蔵モジュラスが+40℃で、0.02MPaないし0.2MPaであることを特徴とする請求項1に記載のディスプレイプロテクタ。
- 前記第2応力緩和粘着層の貯蔵モジュラスが-10℃で、0.03MPaないし0.2MPaであることを特徴とする請求項1に記載のディスプレイプロテクタ。
- 前記第2応力緩和粘着層の貯蔵モジュラスが+40℃で、0.02MPaないし0.2MPaであることを特徴とする請求項1に記載のディスプレイプロテクタ。
- 前記超薄ガラス(UTG)層上に、飛散防止用コーティング層をさらに含むことを特徴とする請求項1に記載のディスプレイプロテクタ。
- 前記超薄ガラス(UTG)層は、30μmないし70μmの厚みを有し、曲率半径1.0mmで折り畳んだとき、破損されないように強化されたガラスであることを特徴とする請求項1に記載のディスプレイプロテクタ。
- 前記第1応力緩和粘着層の貯蔵モジュラスは、前記第2応力緩和粘着層の貯蔵モジュラスより小さいか、あるいは実質的に同一であることを特徴とする請求項1に記載のディスプレイプロテクタ。
- 対向する第1表面及び第2表面を有する透明基材層と、
前記透明基材層の前記第1表面上に提供された第1応力緩和粘着層と、
前記透明基材層の前記第2表面上に提供された第2応力緩和粘着層と、
前記第1応力緩和粘着層上に提供された超薄ガラス(UTG)層と、を含み、
前記第1応力緩和粘着層及び前記第2応力緩和粘着層が、それぞれ前記透明基材層と、前記第1応力緩和粘着層及び前記第2応力緩和粘着層が付着するフォールダブルディスプレイまたはローラブルディスプレイとに対し、600gf/inないし1,500gf/inの粘着力を有し、
前記透明基材層は、ポリウレタン樹脂、ポリエステル系樹脂及び(メト)アクリル系樹脂から選択された少なくとも1つを含む、ディスプレイプロテクタ。 - 前記第1応力緩和粘着層及び前記第2応力緩和粘着層の貯蔵モジュラスが、それぞれ-10℃で、0.03MPaないし0.18MPaであることを特徴とする請求項9に記載のディスプレイプロテクタ。
- 前記第1応力緩和粘着層及び前記第2応力緩和粘着層の貯蔵モジュラスが、それぞれ-10℃で、0.06MPaないし0.14MPaであることを特徴とする請求項10に記載のディスプレイプロテクタ。
- 前記第1応力緩和粘着層及び前記第2応力緩和粘着層の貯蔵モジュラスが、それぞれ+40℃で、0.02MPaないし0.18MPaであることを特徴とする請求項9に記載のディスプレイプロテクタ。
- 前記第1応力緩和粘着層及び前記第2応力緩和粘着層の貯蔵モジュラスが、それぞれ+40℃で、0.04MPaないし0.14MPaであることを特徴とする請求項12に記載のディスプレイプロテクタ。
- 前記超薄ガラス(UTG)層上に、飛散防止用コーティング層をさらに含むことを特徴とする請求項9に記載のディスプレイプロテクタ。
- 前記超薄ガラス(UTG)層の厚みは、30μmないし70μmであることを特徴とする請求項14に記載のディスプレイプロテクタ。
- 対向する第1表面及び第2表面を有する透明基材層と、
前記透明基材層の前記第1表面上に提供された第1応力緩和粘着層と、
前記透明基材層の前記第2表面上に提供された第2応力緩和粘着層と、
前記第1応力緩和粘着層上に提供された超薄ガラス(UTG)層と、を含み、
前記超薄ガラス(UTG)層は、
第1方向に延長され、互いに反対側に位置する第1ガラスエッジ及び第2ガラスエッジと、
前記第1方向に垂直である第2方向に延長され、互いに反対側に位置する第3ガラスエッジ及び第4ガラスエッジと、を含み、
前記透明基材層、前記第1応力緩和粘着層及び前記第2応力緩和粘着層は、互いに共通する外縁を有するが、
前記外縁は、
前記第1ガラスエッジ及び前記第2ガラスエッジにそれぞれ平行に延長される第1フィルムエッジ及び第2フィルムエッジと、
前記第3ガラスエッジ及び前記第4ガラスエッジにそれぞれ対応する第3フィルムエッジ及び第4フィルムエッジと、を含み、
前記第1フィルムエッジ及び前記第2フィルムエッジが、それぞれ前記第1ガラスエッジ及び前記第2ガラスエッジより内側にオフセットされている、ディスプレイプロテクタ。 - 前記ディスプレイプロテクタは、前記第1ガラスエッジ及び前記第2ガラスエッジに平行なフォールディング軸について折り畳まれるように構成されていることを特徴とする請求項16に記載のディスプレイプロテクタ。
- 前記第3フィルムエッジは、少なくとも部分的に、前記第3ガラスエッジより外側にオフセットされるか、
前記第4フィルムエッジは、少なくとも部分的に、前記第4ガラスエッジより外側にオフセットされるか、あるいは
前記第3フィルムエッジ及び前記第4フィルムエッジは、それぞれ少なくとも部分的に、前記第3ガラスエッジ及び前記第4ガラスエッジより外側にオフセットされていることを特徴とする請求項17に記載のディスプレイプロテクタ。 - 前記第3フィルムエッジ及び前記第4フィルムエッジは、それぞれ少なくとも部分的に、前記第3ガラスエッジ及び前記第4ガラスエッジより外側にオフセットされていることを特徴とする請求項18に記載のディスプレイプロテクタ。
- 前記第3フィルムエッジは、
前記フォールディング軸と交差し、前記第3ガラスエッジより外側にオフセットされている第1フィルムサブエッジ部と、
前記第3フィルムエッジの末端部をなし、前記第1フィルムエッジと出合う第1コーナーエッジ部と、
前記第1フィルムサブエッジ部と前記第1コーナーエッジ部とを連結する第2フィルムサブエッジ部と、を含み、
前記第1コーナーエッジ部は、前記超薄ガラス(UTG)層の対応するコーナーエッジより内側にオフセットされていることを特徴とする請求項18に記載のディスプレイプロテクタ。 - 前記第2フィルムサブエッジ部は、前記第3ガラスエッジより外側にオフセットされている部分を含むが、前記第1コーナーエッジ部に近づくほど、外側にオフセットされる寸法が漸進的に低減することを特徴とする請求項20に記載のディスプレイプロテクタ。
- 前記第1フィルムサブエッジ部は、前記第3ガラスエッジより外側に、少なくとも20μmオフセットされ、
前記第2フィルムサブエッジ部は、80%以上の長さにつき、前記第3ガラスエッジの対応する部分より内側にオフセットされていることを特徴とする請求項20に記載のディスプレイプロテクタ。 - 前記フォールディング軸上において、前記第1フィルムサブエッジ部が、前記第3ガラスエッジより外側にオフセットされる寸法は、約50μmないし400μmであることを特徴とする請求項20に記載のディスプレイプロテクタ。
- ディスプレイプロテクタ付着キットであって、前記ディスプレイプロテクタ付着キットは、
請求項1ないし15のうちいずれか1項に記載のディスプレイプロテクタと、
前記ディスプレイプロテクタのエッジに提供されうる粘着溶液と、を含み、
前記透明基材層、前記第1応力緩和粘着層及び前記第2応力緩和粘着層は、互いに共通する外縁を有するが、前記外縁は、前記超薄ガラス(UTG)層のエッジより内側にオフセットされている、ディスプレイプロテクタ付着キット。 - 前記粘着溶液の粘度は、20℃ないし25℃の温度で、10cpないし50cpであることを特徴とする請求項24に記載のディスプレイプロテクタ付着キット。
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- 2022-06-13 US US17/838,271 patent/US20220413187A1/en active Pending
- 2022-06-13 CN CN202210659822.5A patent/CN115464965A/zh active Pending
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JP2012123343A (ja) | 2010-12-10 | 2012-06-28 | Arisawa Mfg Co Ltd | 立体画像表示装置 |
US20190086709A1 (en) | 2017-09-18 | 2019-03-21 | Samsung Display Co., Ltd. | Flexible display device |
US20190115547A1 (en) | 2017-10-18 | 2019-04-18 | Dongwoo Fine-Chem Co., Ltd. | Flexible display device |
CN111667769A (zh) | 2020-07-07 | 2020-09-15 | 京东方科技集团股份有限公司 | 粘接结构及其制作方法、显示装置 |
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TW202248011A (zh) | 2022-12-16 |
CN115464965A (zh) | 2022-12-13 |
EP4101635A1 (en) | 2022-12-14 |
TWI818583B (zh) | 2023-10-11 |
JP2022189823A (ja) | 2022-12-22 |
US20220413187A1 (en) | 2022-12-29 |
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