LIGHT GUIDE PLATE AND OPTICAL DISPLAY WITH BACKLIGHT

PROBLEM TO BE SOLVED: To provide a light guide plate suitable for guiding visible light for backlighting of a liquid crystal display.SOLUTION: A light guide plate 1 is made of glass and has two parallel lateral faces 10, 11 and at least one edge face 13 preferably used for light input face. The glas...

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Hauptverfasser:	JOCHEN ALKEMPER, SCHMITT MATTHIAS, ANDREAS VOITSCH, KLOSS THOMAS, GERHARD LAUTENSCHLAEGER
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ADVERTISING BLASTING CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY CRYPTOGRAPHY DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING DISPLAY DISPLAYING EDUCATION FREQUENCY-CHANGING GLASS HEATING JOINING GLASS TO GLASS OR OTHER MATERIALS LABELS OR NAME-PLATES LIGHTING MECHANICAL ENGINEERING METALLURGY MINERAL OR SLAG WOOL NON-LINEAR OPTICS NON-PORTABLE LIGHTING DEVICES OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS SEALS SIGNS SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS SYSTEMS THEREOF TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a light guide plate suitable for guiding visible light for backlighting of a liquid crystal display.SOLUTION: A light guide plate 1 is made of glass and has two parallel lateral faces 10, 11 and at least one edge face 13 preferably used for light input face. The glass for the light guide plate contains BOand SiOas components, in a total content percentage of at least 70 mass%, preferably at least 80 mass% and more advantageously at least 90 mass% and a content percentage of BOof over 10%, and contains metal oxides of divalent metals in a total content percentage of less than 3 mass% and AlOby 1 to 5 mass%. The light guide plate 1 shows a pure transmittance of at least 90% in a 100 mm optical path length.SELECTED DRAWING: Figure 1 【課題】液晶ディスプレイのバックライト用の可視光を導く目的に適した導光板の提供。【解決手段】導光板１はガラス製で、２つの平行した側面１０，１１と、好ましくは光入射面として用いられる少なくとも１つのエッジ面１３とを有し、成分としてＢ2Ｏ3とＳｉＯ2の合計含有率は、少なくとも７０質量％、好ましくは少なくとも８０質量％、特に有利には少なくとも９０質量％であり、Ｂ2Ｏ3含有率が１０％超、さらに、二価の金属の金属酸化物の全含有率が３質量％未満、Ａｌ2Ｏ3が１〜５質量％の間で含まれ、導光板１の純透過率が１００ｍｍの光路長で少なくとも９０％である導光板用ガラス。【選択図】図１