TW563361B - Flat-panel display - Google Patents
Flat-panel display Download PDFInfo
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- TW563361B TW563361B TW090124398A TW90124398A TW563361B TW 563361 B TW563361 B TW 563361B TW 090124398 A TW090124398 A TW 090124398A TW 90124398 A TW90124398 A TW 90124398A TW 563361 B TW563361 B TW 563361B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/003—Lens or lenticular sheet or layer
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3129—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] scanning a light beam on the display screen
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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
- G02F2/00—Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light
- G02F2/02—Frequency-changing of light, e.g. by quantum counters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
- H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
- H04N5/7441—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being an array of liquid crystal cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S385/00—Optical waveguides
- Y10S385/901—Illuminating or display apparatus
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Projection Apparatus (AREA)
- Overhead Projectors And Projection Screens (AREA)
Description
563361 五 案號 ^ 92, 7. 30 發明說明(1) 發明領域: 本發明係有關& # & 雷射二極體自一斜\ 一種製造平面顯示裝置的方法藉由 (tapered )面板。里顯不裝置投射影像至一楔型 曰 修正 相關技術說明 具有足夠 面顯示裝置可 置可輕易地安 寸受限於列及 微影技術可精 於一公尺得主 的電漿顯示装 隨尺寸大幅降 顯示裝置相對 費少許的錢。 投影機包 螢幕,投射鏡 大影像幾乎如 受度,但若投 擋到觀看者或 光線昏暗,否 景光與投射影 代,使得觀看 大的螢幕 立即提供 裝於室内 行的透明 確製作出 動矩陣液 置對大部 低且用於 地較便宜 以刺激 畫像, 牆上。 導體之 電晶體 晶顯示 分用途 投影機 ,指甲 我們周圍 又因為螢 然而,傳 電阻/電 的區域。 裝置成本 來說還是 之2"乘2,' 般大小的 視覺快速反 幕為平面, 統平面顯示 容時間常數 製作螢幕對 過高,即使 太昂貴,但 (5cm X 5cm 微型顯示裝 應的平 顯示裝 裝置尺 ,以及 角線大 較廉價 是成本 )液晶 置只花 括一二維顯示裝置、一投 片形成於半透明螢幕上, 需求般大。投影機較便宜 射器指向半透明螢幕前方 觀看者擋到投射光的情形 則影像看起來像被洗過般 像相同。可藉由指向螢幕 者與螢幕之間無任何東西 射鏡片及一半透明 二維顯示裝置的放 ’因此增加大眾接 ’時常造成投射器 。再者,除非室内 ’因為螢幕散射背 背面的投射器來取 ’且螢幕散射光只
3002-4389-PFl.ptc 第5頁 563361 五、發明說明(2) 案號 90124398
入射在其背面,但是背投式顯示裝置體積較龐大。 最近在PCT/GB01/01209中揭示一楔型顯示裝置,其包 括一投影機及一朝單一方向變細的玻璃平板。投影機本身 係由一近似準直照明光源、一微型顯示裝置、一聚焦鏡片 及一投射鏡片所組成,且當光線離開投射鏡片時形成一窄 腰(narrow waist)。因而光線會通入楔形玻璃平板的厚 端。當光線射入楔型玻璃平板的厚端,於每次光線從楔型 板相對表面反射時,量測楔型板表面之離面 (out-of-plane )角度都會改變。最後,當光線沿著楔型 板傳導的夠遠時,離面角度會大於臨界角,因而光線從此 楔型板漏出。光線進入到離開楔型玻璃平板的路程取決於馨 光線入射的角度。微型顯示裝置上二維畫素(p丨xe 1 )陣 列一對一設置定位於楔型波導管表面上的二維晝素陣列。 為確保光線達到臨界角時所有光線會離開螢幕,需要一抗 反射塗覆層,否則相鄰影像列之間會模糊不清。 楔型顯示裝置享有許多背螢幕投射顯示裝置的優點, 但是工作於雷射光較優於非相干(inc〇herent )的白色光 源。第一,白光並不準直,第二,白光包含許多波長而使 抗反射塗覆層必須更複雜更貴。紅、綠及藍色雷射效力更 大更便且’但疋幾年來都貴於弧光(arc_light),且塗 層設計要恰好配合三波長過於複雜。
最近,由A Rapaport、F Szipocs、J Milliez、H
Jenssen、M Bass、K Schafer 及 K Belfield 揭示於「近紅 外線上轉換(up-conversiori)之光學寫入式顯示裝置」
3002-4389-PFi.ptc 第6頁 563361 案號 90124398 ΛΜ Β 修正 五、發明說明(3) 第20國際顯示裝置研究會議之會議記錄的丨丨^到丨丨^頁中, 一種製作影像顯示裝置的方法,其中調整過的9 75奈米 (ΠΠ1 )紅外線雷射光束知描過鏡離子(γ|^3+ )螢幕,其吸 收此光並轉換能量至發出可見波長螢光之摻雜離子。紅外 線雷射二極體較具效力且相對較便宜,且證明在施加電位 之四氟紀納(NaYF4)基質(host)中分別利用鐘(TV )、鈥(Ho3 )及铒(Er3 )離子可得到高光學效率之紅 色、綠色及藍色發射光’但是此種投影方式體積較龐大。 發明概述: 本發明提供 以一準直光源照 與入射至面板邊 置,最好介於該 向(亦即垂直傳 出螢幕,以將紅 本發明可使 導管的輸入裝置 光材料所製成。 均勻發射的優點 因為大部分玻璃 (monochoma t i c 為不易分散及對 一種平面顯示裝置,包括:一投射裝置 射,例如 緣角度有 投射裝置 導軸之平 外線或其 用單一、 ,且仍可 用於彩色 ’提供確 或塑膠材 )或窄帶 塗層而言 一紅外線雷射;一波導管,沿著 關的傳導軸路程發射光線;一裝 與該波導管之間,以放大寬度方 面大小)的投射影像;以及一輸 他光源轉成可見光。 便宜、高功率雷射,用作楔型波 獲得全彩影像。輸出螢幕可由磷 影像的RGB畫素中,具有全方向 實的視覺影像。紅外光較有利, 料對其而言是透明的。單色 (narrow-band )光較有矛,因 ,例如抗反射層,較單純。
I瞧 3002-4389-PFl.Dtc 第7頁 563361 __案號90124398_年月曰 修正_ 五、發明說明(4) 圖式之簡單說明: 為了進一步了解本發明實施例,以下藉由範例並配合 所附圖示說明之,其中: 第1圖係繪示出以光線射入角度來取決沿楔型波導管 傳導之光線路程; 第2圖係繪示出以紅外線雷射二極體照射一上轉換磷 螢幕及一楔型顯示裝置可提供一可見圖像; 第3圖係繪示出三影像投射裝置的每一個可用來照射 三組磷光體的每一組的畫素;以及 第4圖係繪示出第3圖中磷光體系統之放大圖。 [符號說明] 1〜玻璃楔型平板; 2a、21、22、23〜投射裝置; 2b〜聚焦鏡片; 3〜厚板; 4〜柱狀鏡片; 5a、5b〜鍵銀鏡面; 6、1 5〜鏡面; 7〜輸出螢幕; 1 〇〜雷射二極體; 1 1、1 2〜望遠鏡片; 1 3、1 4〜微鏡片; 1 6、1 7、1 8〜磷光體; 1 9〜棱鏡。
3002-4389-PFl.ptc 第8頁 563361 案號 90124398 92. 7. 30 年月曰 修正 五、發明說明(5) 較佳實施例之詳細說明: 第1圖說明光從一楔型平面漏出的原理,其位置取決 於入射的離面角❶此原理係用於PCT/GB0 1 / 0 1 209中以製作 一平面二維顯示裝置。 第2圖中,一種準直光源1 〇,例如來自一紅外線雷射 二極體的光束,經由一對倒置的望遠鏡片1 1、1 2而展開並 接著進入包括一微型顯示裝置2a及一聚焦鏡片2b的一投射 裝置。經調整的光線藉由一鏡面6反射,接著進入一放大 裝置3的邊緣,例如一玻璃或透明塑膠之楔型厚板邊緣, 並因在内部全反射而侷限於玻璃/空氣界面。光線在厚板 平面内傳導’使得光束依到達厚板3末端的時間而擴展成 厚板的寬度。光線可藉由夾擠於一對前置鍍銀鏡面5a、5匕 之間厚板3每一面上的柱狀鏡片4而隨意地呈準直,並接 =入楔型玻璃平板1的厚端。楔型玻璃平板丨之前視(觀測 面)表面塗覆有一抗反射層來調整雷射二極體1 〇的波 ί線在到達臨界角時立即離開楔型玻璃平板1, 先線接者入射於一輸出螢幕7 ’例如一上轉換 圖:二光平板及於經由微型顯示裝置調整 _茶=可見先中產生一放大影像。 彩色的圖像較令人滿意,磷 克式红多、線’尤输出螢幕7可被一馬赛 裝置顯示出;些===光體圖案化且由微型顯示 而,此需要微型顯示裝置; 1”其他色彩。然 礙光勞幕之精確疊合精度
3002-4389-PFl.ptc 第9頁 9Z 7. 30 寺月曰 條正 563361 _案號 90124398 五、發明說明(6) (registration) 〇 遮蔽罩幕(shad〇w mask)可利用相 同方式使用於陰極射線管,但是較浪費光源。 第3圖繪示出如何以一紅外線雷射二極體(未繪示) 照射三個如微型顯示裝置之色彩投射裝置21、22、23的每 一個,可透過一組鏡片控制輸出螢幕7上的色彩。光線從 每一微型顯示裝置21、22、23投射至厚板6並藉由柱狀鏡 片4調成準直,使得每一微型顯示裝置的光線有相同的入 面角(in-Plane angie ),但是來自其他微型顯示裝置的 光線則不同。因此當光線從楔型玻璃平板丨露出,來&自任 何一微型顯示裝置的光線具有清楚的方位角(azi angle),一連串的棱鏡19將光線彎入水平面(亦即垂直 厚板)且接者一如柱狀微鏡片(microlens)之聚集裝 置14的垂直陣列係用以將光線聚焦於垂直攔中的位組Ύ 一上轉換鱗光體色彩設置於這些位組。依次在其他微型顯 示裝置作相同的動作,使得微型顯示裝置21調整磷光體 18、微型顯示裝置22調整磷光體17及微型顯示 磷光體16。 < β f光體可發射出所有方向的光,且令人滿意的是射入 螢幕貪面的光線回反射而朝向前面。然而若一簡單的鏡面 設置於磷光體後面,也可反射紅外光來照射磷光體。一解 決方法係使用雙色性(dichr〇ic )鏡面,其透射紅外光且 反f可見光,但是雙色性鏡面太昂貴。第3圖繪示出一柱 狀微鏡片1 3的水平陣列位於棱鏡1 9與垂直鏡片曰i 4之間以將 紅外光聚焦通過鏡面丨5中水平狹縫。由於這些狹縫^、,大
563361 ___ 案號 90124398 年 月 ’日 修正 五、發明說明(7) 少 部分來自磷光體的可見光回反射朝向螢幕前方。 第4圖繪示出磷光螢幕之一紅綠藍(RGB )色彩畫素分 解圖。RGB填光體可以是Rapap〇rt等人提出的類型。然 而,也可以藉由紫外光激發。需留意的是雖然紫外線雷射 依舊昂貴且脆弱,但是水銀放電燈發射出線寬小的光且由 於孔徑小而可利用一碟狀鏡面適度地將光調成準直。傳統 的磷光體可用於將紫外光轉成可見光,且第2、3、4圖的 佈局亦可以紫外光下運作。
Claims (1)
- 563361•一種平面顯示裝置,包括:一投射裝置(2a; 21-23),以一準直光源(10 一波導管(1 ),沿著與 關的傳導軸路程發射光線; —放大裝置(3),以放 的投射影像;以及 入射至該波導管邊緣角度有 大垂直該傳導軸之平面大小 光。 ,其中 ,其中 光平-輸出螢幕⑴,以將該準直光源轉成可見 # &播ί申晴專利範圍第1項所述之平面顯示裝置 Μ /導官(1 )係一透明材質之楔型厚板。 3·如申請專利範圍第2項所述之平面顯示裝置 該雨出螢幕(7 )係一位在該厚板上或在附近的磷 ^ 4 ·如申請專利範圍第3項所述之平面顯示裝置,其中 沿该厚板傳導的方向平行的柱狀物中的該磷光體係RGB磷 光體’且該投射裝置具有三個相應的色彩投射裝置 (21-23)以不同的入面角射入。 5·如申請專利範圍第4項所述之平面顯示裝置,更包 括一聚集裝置(14),以從每一該等色彩投射裝置聚集光 線於該相應磷光體柱狀物上。 6·如申請專利範圍第5項所述之平面顯示裝置,其中 到達該磷光體的光利用一組枉狀微鏡片(1 3 ),且通過列 方向相應的狹縫而聚集,使得/些光從該磷光體向後發射 進入該波導管系統。3002-4389-PH.ptc 第12頁 563361 92. 7. 30 案號90124398_年月日_i±^_ 六、申請專利範圍 7.如申請專利範圍第3項所述之平面顯示裝置,其中 該投射器係一紅外線雷射且該磷光體係上轉換磷光體。 « Φ3002-4389-PFl.ptc 第13頁
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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GBGB0024112.5A GB0024112D0 (en) | 2000-10-03 | 2000-10-03 | Flat panel display |
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TW563361B true TW563361B (en) | 2003-11-21 |
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TW090124398A TW563361B (en) | 2000-10-03 | 2001-10-03 | Flat-panel display |
Country Status (9)
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US (1) | US6870671B2 (zh) |
EP (2) | EP2023626A3 (zh) |
JP (1) | JP4214208B2 (zh) |
CN (1) | CN100411432C (zh) |
AU (1) | AU2001292102A1 (zh) |
DE (1) | DE60138559D1 (zh) |
GB (1) | GB0024112D0 (zh) |
TW (1) | TW563361B (zh) |
WO (1) | WO2002029772A2 (zh) |
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WO2002029772A3 (en) | 2002-08-15 |
EP2023626A2 (en) | 2009-02-11 |
WO2002029772A2 (en) | 2002-04-11 |
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EP2023626A3 (en) | 2009-02-25 |
EP1323306B1 (en) | 2009-04-29 |
JP2004511016A (ja) | 2004-04-08 |
EP1323306A2 (en) | 2003-07-02 |
CN100411432C (zh) | 2008-08-13 |
JP4214208B2 (ja) | 2009-01-28 |
AU2001292102A1 (en) | 2002-04-15 |
CN1600025A (zh) | 2005-03-23 |
GB0024112D0 (en) | 2000-11-15 |
DE60138559D1 (de) | 2009-06-10 |
US20040004761A1 (en) | 2004-01-08 |
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