JP2008208020A - ディスプレイ用ガラス基板 - Google Patents
ディスプレイ用ガラス基板 Download PDFInfo
- Publication number
- JP2008208020A JP2008208020A JP2008007507A JP2008007507A JP2008208020A JP 2008208020 A JP2008208020 A JP 2008208020A JP 2008007507 A JP2008007507 A JP 2008007507A JP 2008007507 A JP2008007507 A JP 2008007507A JP 2008208020 A JP2008208020 A JP 2008208020A
- Authority
- JP
- Japan
- Prior art keywords
- glass substrate
- glass
- sin
- retardation
- display
- 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.)
- Granted
Links
- 239000011521 glass Substances 0.000 title claims abstract description 218
- 239000000758 substrate Substances 0.000 title claims abstract description 123
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 33
- 238000005259 measurement Methods 0.000 claims abstract description 28
- 238000000465 moulding Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 14
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 7
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 7
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 229910052700 potassium Inorganic materials 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 238000010583 slow cooling Methods 0.000 description 21
- 210000002858 crystal cell Anatomy 0.000 description 10
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 8
- 238000001816 cooling Methods 0.000 description 8
- 230000007423 decrease Effects 0.000 description 8
- 238000007500 overflow downdraw method Methods 0.000 description 8
- 238000004031 devitrification Methods 0.000 description 6
- 238000009826 distribution Methods 0.000 description 6
- 238000003280 down draw process Methods 0.000 description 6
- 239000000156 glass melt Substances 0.000 description 6
- 238000000137 annealing Methods 0.000 description 5
- 239000010408 film Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000006124 Pilkington process Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 239000006060 molten glass Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- MQWCQFCZUNBTCM-UHFFFAOYSA-N 2-tert-butyl-6-(3-tert-butyl-2-hydroxy-5-methylphenyl)sulfanyl-4-methylphenol Chemical compound CC(C)(C)C1=CC(C)=CC(SC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O MQWCQFCZUNBTCM-UHFFFAOYSA-N 0.000 description 1
- 229910021193 La 2 O 3 Inorganic materials 0.000 description 1
- -1 SO 3 Inorganic materials 0.000 description 1
- 229910006404 SnO 2 Inorganic materials 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
- C03C3/093—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium containing zinc or zirconium
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/06—Forming glass sheets
- C03B17/067—Forming glass sheets combined with thermal conditioning of the sheets
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
- C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133302—Rigid substrates, e.g. inorganic substrates
Landscapes
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Glass Compositions (AREA)
- Liquid Crystal (AREA)
Abstract
【解決手段】本発明のディスプレイ用ガラス基板は、ガラス基板面と直交する光によりガラス基板面内を50mm間隔で測定したレタデーションをΔ(nm)、該レタデーションのガラス基板の辺方向に対する方位角をθ(°)とし、任意の測定点aにおける{sin(2θ)}2×{sin(180°・Δ/550)}2で求めた値をA、測定点aに隣り合う測定点a’における{sin(2θ)}2×{sin(180°・Δ/550)}2で求めた値をA’とした際、
隣り合う測定点a、a’における値A、A’の変化率((A−A’)/50)が4.0×10-7以下であることを特徴とする。
【選択図】図3
Description
(1)ガラスリボンが均一に加熱されるように、ヒーターの数を多くする。
(2)ヒーターからの熱がガラスリボンに均一に伝わるように、ヒーターとガラスリボンの間に均熱板を設置する。
(3)ガラスリボンの中央部と端部の冷却速度の差が小さくなるように、ガラスリボンの端部に囲いを設置したり、その部分にヒーターを多く配置する。
(4)ガラスの板引き速度を低く(遅く)する。
2 背面ガラス基板(アレイ用ガラス基板)
3 前面ガラス基板(カラーフィルター用ガラス基板)
4 薄膜トランジスタ(TFT)
5 画素電極
6 配向膜(背面用)
7 偏光板(背面用)
8 対向電極
9 カラーフィルター
10 配向膜(前面用)
11 偏光板(前面用)
12 バックライト
13 液晶分子
20 成形炉
20a 成形炉の炉壁
21 成形体
22 成形ロール
23 徐冷炉
23a 徐冷炉の炉壁
24 引っ張りロール
25 冷却室
26 支持ロール
27 切断室
28 成形室
29 送風機
30 周壁部
31 フィルター
A 溶融ガラス
B ガラスリボン
C ガラス基板
Claims (5)
- ガラス基板面と直交する光によりガラス基板面内を50mm間隔で測定したレタデーションをΔ(nm)、該レタデーションのガラス基板の辺方向に対する方位角をθ(°)とし、任意の測定点aにおける{sin(2θ)}2×{sin(180°・Δ/550)}2で求めた値をA、測定点aに隣り合う測定点a’における{sin(2θ)}2×{sin(180°・Δ/550)}2で求めた値をA’とした際、
隣り合う測定点a、a’における値A、A’の変化率((A−A’)/50)が4.0×10-7以下であることを特徴とするディスプレイ用ガラス基板。 - ガラス基板の短辺の長さが1000mm以上であることを特徴とする請求項1記載のディスプレイ用ガラス基板。
- 質量百分率で、SiO2 40〜70%、Al2O3 2〜25%、B2O3 0〜20%、MgO 0〜10%、CaO 0〜15%、SrO 0〜10%、BaO 0〜15%、ZnO 0〜10%、R2O(RはLi、Na、Kを表わす) 0〜25%、ZrO2 0〜10%を含有するガラスからなることを特徴とする請求項1または2に記載のディスプレイ用ガラス基板。
- ダウンドロー成形法により成形されてなることを特徴とする請求項1〜3の何れかに記載のディスプレイ用ガラス基板。
- 液晶ディスプレイのガラス基板として使用されることを特徴とする請求項1〜4の何れかに記載のディスプレイ用ガラス基板。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008007507A JP5365970B2 (ja) | 2007-01-29 | 2008-01-17 | ディスプレイ用ガラス基板 |
| PCT/JP2008/050784 WO2008093566A1 (ja) | 2007-01-29 | 2008-01-22 | ディスプレイ用ガラス基板 |
| KR1020097009942A KR101422309B1 (ko) | 2007-01-29 | 2008-01-22 | 디스플레이용 유리 기판 |
| TW097102794A TWI408116B (zh) | 2007-01-29 | 2008-01-25 | 顯示器用玻璃基板 |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007017869 | 2007-01-29 | ||
| JP2007017869 | 2007-01-29 | ||
| JP2008007507A JP5365970B2 (ja) | 2007-01-29 | 2008-01-17 | ディスプレイ用ガラス基板 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2008208020A true JP2008208020A (ja) | 2008-09-11 |
| JP5365970B2 JP5365970B2 (ja) | 2013-12-11 |
Family
ID=39673878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008007507A Active JP5365970B2 (ja) | 2007-01-29 | 2008-01-17 | ディスプレイ用ガラス基板 |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5365970B2 (ja) |
| KR (1) | KR101422309B1 (ja) |
| TW (1) | TWI408116B (ja) |
| WO (1) | WO2008093566A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014189457A (ja) * | 2013-03-27 | 2014-10-06 | Avanstrate Inc | ガラス板製造方法、および、ガラス板製造装置 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5224096B2 (ja) * | 2007-01-29 | 2013-07-03 | 日本電気硝子株式会社 | ディスプレイ用ガラス基板の製造方法 |
| US8210001B2 (en) | 2010-11-10 | 2012-07-03 | Corning Incorporated | Method of producing uniform light transmission fusion drawn glass |
| KR102212726B1 (ko) | 2020-08-31 | 2021-02-04 | 김보화 | 열 확산구조를 갖는 전기구이기 |
| KR102555274B1 (ko) | 2022-12-03 | 2023-07-13 | 김환배 | 분리형 측면 미세먼지 집진휀스로 세척이 용이한 고기구이기 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001130920A (ja) * | 1999-10-28 | 2001-05-15 | Asahi Glass Co Ltd | ディスプレイ用ガラス基板 |
| JP2004091244A (ja) * | 2002-08-30 | 2004-03-25 | Nippon Electric Glass Co Ltd | 無アルカリガラス基板及びその製造方法 |
| JP2005097544A (ja) * | 2003-08-20 | 2005-04-14 | Tosoh Corp | ディスプレイ用プラスチック基板および表示素子 |
| JP2005283969A (ja) * | 2004-03-30 | 2005-10-13 | Nec Corp | 液晶表示装置及びこれを用いた液晶プロジェクタ |
| JP2006137631A (ja) * | 2004-11-11 | 2006-06-01 | Nippon Electric Glass Co Ltd | ガラス基板及びその製造方法 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0922002A (ja) * | 1995-07-07 | 1997-01-21 | Teijin Ltd | 液晶用プラスチック基板 |
| JPH1016143A (ja) * | 1996-07-03 | 1998-01-20 | Kanegafuchi Chem Ind Co Ltd | 光学用透明プラスチックシートの製造方法 |
-
2008
- 2008-01-17 JP JP2008007507A patent/JP5365970B2/ja active Active
- 2008-01-22 WO PCT/JP2008/050784 patent/WO2008093566A1/ja not_active Ceased
- 2008-01-22 KR KR1020097009942A patent/KR101422309B1/ko active Active
- 2008-01-25 TW TW097102794A patent/TWI408116B/zh active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001130920A (ja) * | 1999-10-28 | 2001-05-15 | Asahi Glass Co Ltd | ディスプレイ用ガラス基板 |
| JP2004091244A (ja) * | 2002-08-30 | 2004-03-25 | Nippon Electric Glass Co Ltd | 無アルカリガラス基板及びその製造方法 |
| JP2005097544A (ja) * | 2003-08-20 | 2005-04-14 | Tosoh Corp | ディスプレイ用プラスチック基板および表示素子 |
| JP2005283969A (ja) * | 2004-03-30 | 2005-10-13 | Nec Corp | 液晶表示装置及びこれを用いた液晶プロジェクタ |
| JP2006137631A (ja) * | 2004-11-11 | 2006-06-01 | Nippon Electric Glass Co Ltd | ガラス基板及びその製造方法 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014189457A (ja) * | 2013-03-27 | 2014-10-06 | Avanstrate Inc | ガラス板製造方法、および、ガラス板製造装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101422309B1 (ko) | 2014-07-22 |
| TWI408116B (zh) | 2013-09-11 |
| WO2008093566A1 (ja) | 2008-08-07 |
| JP5365970B2 (ja) | 2013-12-11 |
| TW200833627A (en) | 2008-08-16 |
| KR20090103995A (ko) | 2009-10-05 |
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