TW594155B - Optical interference type color display and optical interference modulator - Google Patents
Optical interference type color display and optical interference modulator Download PDFInfo
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- TW594155B TW594155B TW091137638A TW91137638A TW594155B TW 594155 B TW594155 B TW 594155B TW 091137638 A TW091137638 A TW 091137638A TW 91137638 A TW91137638 A TW 91137638A TW 594155 B TW594155 B TW 594155B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 19
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- 239000012788 optical film Substances 0.000 claims abstract description 17
- 239000010408 film Substances 0.000 claims description 55
- 239000000463 material Substances 0.000 claims description 21
- 239000011159 matrix material Substances 0.000 claims description 14
- 239000010409 thin film Substances 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 5
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910001182 Mo alloy Inorganic materials 0.000 claims description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims 2
- 229910052782 aluminium Inorganic materials 0.000 claims 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 4
- 238000000059 patterning Methods 0.000 abstract 3
- 238000010586 diagram Methods 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
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- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
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- 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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/001—Optical devices or arrangements for the control of light using movable or deformable optical elements based on interference in an adjustable optical cavity
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/201—Filters in the form of arrays
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- Crystallography & Structural Chemistry (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
- Liquid Crystal (AREA)
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Description
594155 _案號91137638_年月曰 修正_ 五、發明說明（1) 發明所屬之技術領域 本發明是有關於一種光干涉式彩色顯示面板及光干涉 調節元件，且特別是有關於一種採用單一空氣間隙設計以 及彩色濾光薄膜的光干涉式彩色顯示面板及光干涉調節元 件。 先前技術 目前具有重量輕、厚度薄的平面顯示器，例如液晶顯 示器（LCD)、有機電激發光顯示元件（OLED)、電漿顯示器 (PDP)等已被廣泛的應用於日常生活中。其中，液晶顯示 器已經漸漸成為顯示器的主流，但液晶顯示器仍然存在有 許多的問題，例如是視角不夠廣、應答時間不夠快、需要 藉由彩色濾光片方能全彩化，以及需要使用偏光片而使光 源利用效率不佳，進而導致背光模組更為耗電等等的問 題。 現今已有一種光干涉式顯示面板被發展出來，其主要 是由多個陣列排列的光干涉調節元件（〇 p t i c a 1 Interference Modulator)所構成。其中，光干涉調節元 件主要係由一透明電極、一反射電極以及一用以支撐反射 電極的支撐層所構成。藉由支撐層的支撐，反射電極與透 明電極之間會間隔一特定之空氣間隙（A i r G a p )，光線由 透明電極端進入光干涉調節元件之後，會經過空氣間隙並 入射至第二電極上，接著再藉由第二電極從透明電極端反 射出來。由於光線在不同的空氣間隙中會受到不同程度的 干涉（Interference)，進而呈現不同色光，如紅光、綠光
10395twf1.ptc 第8頁 594155 ____案號 91137638 _^^_日__修正___ 五、發明說明（2) 以及藍光。此外，光干涉調節元件中的反射電極必須結合 微機電系統（Micro Electro Mechanical System，MEMS) 進行設計，以使得光干涉調節元件能夠切換於開啟/關閉 (ο η / 〇 f f )兩種狀態之間，進而達到顯示的目的。 上述由光干涉調節元件所構成之光干涉式顯示面板不 需架構彩色渡光膜與偏光板即可顯示適當之彩色畫面，能 夠節省使用彩色濾光片所需的成本。此外，上述由光干涉 調節元件所構成之光干涉式顯示面板具有低電力耗能、快 速應答時間及雙穩態（B i - s t a b 1 e )的特性，因此有利於低 電力耗能產品的開發，進而應用於可攜式（p 〇 r t a b丨e )的產 品上’例如是行動電話（Μ o b i 1 e P h ο n e )、個人數位助理 (PDA)、電子書（e-book)等。 第1圖繪示為習知光干涉式彩色顯示面板的示意圖。 請參照第1圖所示’光干涉式彩色顯示面板1 〇 〇主要係由一 基板110、一圖案化支撐層120、多個第一電極ho、多個 光學薄膜1 4 0以及多個第二電極1 5 〇所構成。其中，基板 110通常是玻璃基板或其他透明材質之透明基板；圖案化 支撐層120配置於基板11〇上，且圖案化支撐層12〇係用以 支撐住第二電極150的邊緣；第一電極13〇配置於基板 上，此第一電極1 30為透明電極，其材質例如是銦錫氧化 物（Indium Tin Oxide ，IT0);光學薄膜“!）配詈於第一雷 極13〇上，且光學薄膜140通常是由多；膜高;0電配:數於與第多層電 低介電係數交互堆疊所組成；第二電極丨5 〇配置於圖案化 支撐層120上方，並藉由圖案化支撐層12〇支撐，此第二電
10395twf1.ptc 594155 -_ 年月曰 ^_ 五、發明說明（3) 極150通常是具有光反射的金屬材質。 習知的光千涉式彩色顯示面板是由具有不同空氣間隙 (Air Gap)的光干涉_ 節元件（interference m〇dulator) 所構成。由第1圖中可知，不同的光干涉調節元件中，第 二電極1 5 0與第一^電極間1 3 〇之間空氣間隙的設計並不相 同’且為了達成，色顯示的目的，光干涉調節元件中的空 氣間隙通常會設計成三種空氣間隙d丨、d 2、d 3，其中，空 氣間隙為d 1的光干涉調節元件例如能夠顯示紅光；空氣間 隙為d 2的光干涉调雖元件例如能夠顯示藍光；而空氣間隙 為d 3的光干涉調節元件例如能夠顯示綠光。換言之，當光 線由外界依序穿透基板1 1 0、第一電極丨3 〇、光學薄膜丨4 〇 之後’會經過不同的空氣間隙d丨、d 2、d 3入射至第二電極 150上，接著再由第二電極丨5〇反射出基板丨丨〇外時，受到 不同程度的干涉（Interference)而呈現紅光、綠光以及藍 光。 習知光干涉調節元件中的第二電極丨5 〇必須是反射材 質’且必須具備良好的機械特性，當第二電極1 5 0與第一 電極1 3 0麵接於一偏壓時，第二電極1 $ 〇會因電性吸引而朝 向第一電極130移動，進而改變光干涉調節元件中的空氣 間隙d 1 、d 2、d 3。換言之，藉由光干涉調節元件中空氣間 隙d 1、d 2、d 3的改變，即可讓顯示面板中的各個光干涉調 節元件（畫素）切換其開啟/關閉（0n/0f f )之狀態。 ° 承上所述，習知光干涉式彩色顯示面板主要是藉由三 種不同空隙間隙的光干涉調節元件來呈現紅光、綠光與藍
10395twfl,ptc 第10頁 594155 _案號91137638_年月曰 修正_ 五、發明說明（4) 光，其缺點條列如下： 1 .不同空隙間隙的光干涉調節元件在製作上必須分開 進行，其製程相當繁瑣而造成成本上的負擔。 2 .不同空隙間隙的光干涉調節元件在製作上必須分開 進行，使得製作時間隨之拉長，進而影響產能 (throughput ) ° 3.不同空隙間隙的光干涉調節元件在製作上必須分開 進行，使得製程冗長且複雜，故往往造成產品良率低落。 發明内容 因此，本發明的目的就是在提供一種光干涉式彩色顯 示面板及光干涉調節元件，藉由設計同一空氣間隙並配合 彩色濾光薄膜，以使顯示面板達到多彩或全彩之效果，並 使得製程更為簡易。 基於上述目的，本發明提出一種光干涉式彩色顯示面 板，此光干涉式彩色顯示面板係由一彩色濾光片基板、一 圖案化支撐層、多個第一電極、多個光學薄膜以及多個第 二電極所構成。其中，圖案化支撐層與第一電極皆配置於 彩色濾光片基板上，且圖案化支撐層位於各第一電極之間 的區域上，光學薄膜則配置於第一電極上，而第二電極配 置於第一電極上方，並藉由圖案化支撐層支撐住，故第二 電極與第一電極之間具有相同的空氣間隙。 基於上述目的，本發明提出一種光干涉調節元件，此 光干涉調節元件係由一基板、一彩色濾、光薄膜、一圖案化 支撐層、一第一電極、一光學薄膜以及一第二電極所構
10395twf1.ptc 第11頁 594155 _案號91137638_年月日__ 五、發明說明（5) 成。其中，彩色濾光薄膜配置於基板上，第一電極與圖案 化支撐層配置於彩色濾光薄膜上，且圖案化支撐層例如係 位於第一電極分佈的區域以外。光學薄膜則配置於第一電 極上，而第二電極配置於第一電極上方，並藉由案化支撐 層支撐住，故第二電極與第一電極之間具有一空氣間隙。 依照本發明之較佳實施例，彩色濾光片基板係由一基 板、一黑矩陣以及多個彩色濾光薄膜所構成。其中，黑矩 陣配置於基板上，黑矩陣具有多個格點，而彩色濾光薄膜 配置於基板上，且位於黑矩陣的各格點内。 依照本發明之較佳實施例，彩色濾光薄膜例如為紅色 濾光薄膜、綠色濾光薄膜或藍色濾光薄膜。基板例如是透 明基板，其材質例如是玻璃或高分子塑膠等。第一電極例 如為透明電極，且其材質例如為銦錫氧化物。第二電極例 如為金屬電極，且其材質例如為鉬、钥合金、鉻、銘或铭 合金等。光學薄膜例如是由多層高介電係數與多層低介電 係數交互堆疊所形成。 本發明之光干涉式彩色顯示面板及光干涉調節元件因 利用同一空氣間隙以及彩色濾光薄膜的結構，以使顯示面 板展現多彩或全彩之效果，且單一空氣間隙的設計將使得 面板製造流程更為簡易。 為讓本發明之上述和其他目的、特徵、和優點能更明 顯易懂，下文特舉一較佳實施例，並配合所附圖式，作詳 細說明如下： 實施方式
10395twfl.ptc 第12頁 594155 案號 91137638
Jf：η 曰 修正 五、發明說明（6) 第2圖是依照本發明一較佳實施例光干涉式彩色顯示 面板的示意圖。請參照第2圖所示，光干涉式彩色顯示面 板2 0 0主要係由一彩色濾光片基板2丨〇、一圖案化支撐層 220、多個第一電極230、多個光學薄膜240以及多個第二 電極2! 5 0所構成。 彩色濾光片基板2 1 0係由一基板2 1 2、一黑矩陣2 1 4以 及多個彩色濾光薄膜2 1 6所構成。其中，基板2 1 2例如是透 明基板，且其材質例如是玻璃、高分子塑膠或其他透明材 質。黑矩陣2 1 4配置於基板2 1 2上，且黑矩陣2 1 4具有多個 格點’而彩色濾光薄膜2 1 6則配置於基板2丨2上，並位於黑 矩陣2 1 4的格點之内。上述之彩色濾光薄膜2丨6例如包含多 個紅色，光薄膜2 1 6 a、多個綠色濾光薄膜2 1 6 b以及多個藍 色濾光薄膜2i6c，且紅色濾光薄膜216a、綠色濾光薄膜 2 16b、藍色遽光薄膜2 16c可以各種型態排列於黑矩陣21 4 點之内，如馬赛克型、三角配置型、條列配置型、四 畫素配置型等型態。 圖案化支樓層2 2 0配置於彩色濾光片基板2丨〇之黑矩陣 ΐ方，且圖案化支撐層2 2 0係用以支撐住第二電極 ^ h #邊+緣/由第2圖中可知，圖案化支撐層2 2 〇例如為多 ，柱狀支撐體。此外，圖案化支擇層2 2 0的材質例如為樹 月曰Ues i η)或其他與化性與物性安定之材質。 搞9卩電極2 3 〇配置於彩色濾、光片基板2 1 0上，此第一電 ^邋明電極’其材質例如是鋼錫氧化物或其他透明 之导電材質。
594155
光學薄膜240係配置於第一電極23〇上，且與 24 0通常是由至少一層第一介電薄膜24〇a與至 子声、一 案號 發明說明（7) :組成，其中第-介電薄膜曰丄、 第一介電薄膜2 4 Ob之介電係數不相同。 第二電極2 5 0配置於第—電極23〇 , 層22。支樓住，以使得第一電则於第二=案化支： 持-空氣間隙。本實施例中，第二電 金屬電極，其材質例…、二絡有上 中第二電極25。與第_電極間23 以：周： η目同。由於各個光干涉二η \ r ί其上方的光干涉調節元件a搭配將可顯Λ光Λ 示綠光，而藍色滤光薄膜21fi =二f :几件入搭配將可顯 叩i匕心尤溥膜6 c與其上方的光+斗，从士彼 A , 色濾光片基板210上之彩色濾光薄膜216、第_ ( m膜24〇之，，會經過相同的空氣間隙d4人射至第二 電極250上，接著再由第二電極15〇反射出 210外時，將可分別呈現色飽和度（ 色慮先片基板 光、綠光以及藍光。 又）心n的紅 承上所述，由於光干涉調節元件A中的第二電極25〇是
594155 _案號91137638_年月日__ 五、發明說明（8) 反射材質，且具備良好的機械特性，當第二電極2 5 0與第 一電極2 3 0耦接於一偏壓時，第二電極2 5 0會因電性吸引而 朝向第一電極2 3 0移動，進而改變光干涉調節元件A中的空 氣間隙d4。換言之，藉由光干涉調節元件A中空氣間隙d4 的改變，即可讓顯示面板中的各個光干涉調節元件A (畫 素）切換於開啟/關閉（on/of f )之狀態之間。 綜合以上所述，本發明至少具有下列優點： 1 .本發明光干涉式彩色顯示面板，由於每一光干涉調 節元件的空氣間隙皆相同，各個光干涉調節元件可同時製 作，使製程更行簡易，故可降低成本。 2.本發明光干涉式彩色顯示面板，由於每一光干涉調 節元件的空氣間隙皆相同，係可避免習知需重複製作所造 成的時間浪費，故可提昇產能（t h r 〇 u g h p u t )。 3 ·本發明光干涉式彩色顯示面板，由於每一光干涉調 節元件的空氣間隙皆相同，使製程更行簡易，故產品的良 率可提升。 4.本發明光干涉式彩色顯示面板中所使用之彩色濾光 薄膜，由於已是目前相當成熟的技術，其取得容易且色純 度高，故實用性高。 雖然本發明已以較佳實施例揭露如上，然其並非用以 限定本發明，任何熟習此技藝者，在不脫離本發明之精神 和範圍内，當可作些許之更動與潤飾，因此本發明之保護 範圍當視後附之申請專利範圍所界定者為準。
10395twfl.ptc 第15頁 594155 _案號91137638_年月日__ 圖式簡單說明 第1圖繪示為習知光干涉式彩色顯示面板的示意圖； 以及 第2圖是依照本發明一較佳實施例光干涉式彩色顯示 面板的示意圖。 圖式標示說明 100 光 干 涉式彩色顯示 110 基 板 120 圖 案 化支撐層 130 第 一 電極 140 第 二 電極 dl、1 d2、 • d 3 :空氣間隙 200 光 干 涉式彩色顯示 210 彩 色 濾、光片基板 212 基 板 214 垔 矩 陣 216 彩 色 濾光薄膜 216a ：乡 3：色濾光薄膜 216b :綠色濾光薄膜 216c :藍色濾光薄膜 220 圖 案 化支撐層 230 第 _ — 電極 240 光 學 薄膜 2 5 0 : :第 二 電極 d4 : 空氣間隙
10395twfl.ptc 第16頁 594155 案號 91137638 年月曰 修正 圖式簡單說明 A :光干涉調節元件
IBS 第17頁 10395twf1.ptc
Claims (1)
- 594155 _案號91137638_年月日_ifi_ 六、申請專利範圍 1 . 一種光干涉式彩色顯示面板，包括： 一彩色濾光片基板； 一圖案化支撐層，配置於該彩色濾光片基板上； 複數個第一電極，配置於該彩色濾光片基板上； 複數個光學薄膜，配置於該些第一電極上；以及 複數個第二電極，配置於該些第一電極上方，並藉由 該圖案化支撐層支撐，其中該些第二電極與該些第一電極 之間具有相同的空氣間隙。 2 .如申請專利範圍第1項所述之光干涉式彩色顯示面 板，其中該彩色濾光片基板包括： 一基板； 一黑矩陣；以及 複數個彩色濾光薄膜，其中該黑矩陣配置於該基板 上，且該黑矩陣具有複數個格點，而該些彩色濾光薄膜配 置於該基板上，且位於該些格點之内。 3 .如申請專利範圍第2項所述之光干涉式彩色顯示面 板，其中該些彩色濾光薄膜包括複數個紅色濾光薄膜、複 數個綠色濾光薄膜，以及複數個藍色濾光薄膜。 4.如申請專利範圍第1項所述之光干涉式彩色顯示面 板，其中該些第一電極之材質包括透明電極。 5 .如申請專利範圍第4項所述之光干涉式彩色顯示面 板，其中該些第一電極之材質包括銦錫氧化物。 6.如申請專利範圍第1項所述之光干涉式彩色顯示面 板，其中該些第二電極之材質包括金屬電極。10395twf1.ptc 第18頁 594155 _案號91137638_年月日_ί±±_ 六、申請專利範圍 7 .如申請專利範圍第6項所述之光干涉式彩色顯示面 板，其中該些第二電極之材質包括鉬、鉬合金、鉻、鋁及 鋁合金其中之一。 8 .如申請專利範圍第1項所述之光干涉式彩色顯示面 板，其中該基板之材質為玻璃及高分子塑膠其中之一。 9 .如申請專利範圍第1項所述之光干涉式彩色顯示面 板，其中每一該些光學薄膜包括： 至少一第一介電薄膜；以及 至少一第二介電薄膜，其中該第二介電薄膜與該第一 薄膜係交互堆疊，且該第二介電薄膜之介電係數與該第一 介電薄膜之介電係數不同。 1 0 . —種光干涉調節元件，包括： 一基板； 一彩色濾光薄膜，配置於該基板上； 一圖案化支撐層，配置於該彩色濾光薄膜上； 一第一電極，配置於該彩色濾光薄膜上； 一光學薄膜，配置於該第一電極上；以及 一第二電極，配置於該第一電極上方，並藉由該圖案 化支撐層支撐，其中該第二電極與該第一電極之間具有一 空氣間隙。 1 1 .如申請專利範圍第1 0項所述之光干涉調節元件， 其中該彩色濾光薄膜包括一紅色濾光薄膜、一綠色濾光薄 膜，以及一藍色濾光薄膜其中之一。 1 2.如申請專利範圍第1 0項所述之光干涉調節元件，10395twf1.ptc 第19頁 594155 _案號91137638_年月曰 修正_ 六、申請專利範圍 其中該第一電極之材質包括透明電極。 1 3 .如申請專利範圍第1 2項所述之光干涉調節元件， 其中該第一電極之材質包括銦錫氧化物。 1 4.如申請專利範圍第1 0項所述之光干涉調節元件， 其中該第二電極之材質包括金屬電極。 1 5 .如申請專利範圍第1 4項所述之光干涉調節元件， 其中該第二電極之材質包括鉬、鉬合金、鉻、鋁及鋁合金 其中之一。 1 6 .如申請專利範圍第1 0項所述之光干涉調節元件， 其中該基板之材質為玻璃及高分子塑膠其中之一。 1 7.如申請專利範圍第1 0項所述之光干涉調節元件， 其中該光學薄膜包括： 至少一第一介電薄膜；以及 至少一第二介電薄膜，其中該第二介電薄膜與該第一 薄膜係交互堆疊，且該第二介電薄膜之介電係數與該第一 介電薄膜之介電係數不同。10395twf1.ptc 第20頁
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| TW091137638A TW594155B (en) | 2002-12-27 | 2002-12-27 | Optical interference type color display and optical interference modulator |
| US10/249,244 US6912022B2 (en) | 2002-12-27 | 2003-03-26 | Optical interference color display and optical interference modulator |
| KR10-2003-0026832A KR100494736B1 (ko) | 2002-12-27 | 2003-04-28 | 광 간섭 컬러 디스플레이 및 광 간섭 변조기 |
| JP2003136787A JP3996545B2 (ja) | 2002-12-27 | 2003-05-15 | 光干渉型カラーディスプレイおよび光干渉型変調器 |
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| JP2001356701A (ja) * | 2000-06-15 | 2001-12-26 | Fuji Photo Film Co Ltd | 光学素子、光源ユニットおよび表示装置 |
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2002
- 2002-12-27 TW TW091137638A patent/TW594155B/zh not_active IP Right Cessation
-
2003
- 2003-03-26 US US10/249,244 patent/US6912022B2/en not_active Expired - Fee Related
- 2003-04-28 KR KR10-2003-0026832A patent/KR100494736B1/ko not_active IP Right Cessation
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| US8004743B2 (en) | 2006-04-21 | 2011-08-23 | Qualcomm Mems Technologies, Inc. | Method and apparatus for providing brightness control in an interferometric modulator (IMOD) display |
| US9019183B2 (en) | 2006-10-06 | 2015-04-28 | Qualcomm Mems Technologies, Inc. | Optical loss structure integrated in an illumination apparatus |
| US8979349B2 (en) | 2009-05-29 | 2015-03-17 | Qualcomm Mems Technologies, Inc. | Illumination devices and methods of fabrication thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200411255A (en) | 2004-07-01 |
| JP2004212922A (ja) | 2004-07-29 |
| US20040125282A1 (en) | 2004-07-01 |
| US6912022B2 (en) | 2005-06-28 |
| KR20040060704A (ko) | 2004-07-06 |
| KR100494736B1 (ko) | 2005-06-13 |
| JP3996545B2 (ja) | 2007-10-24 |
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