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公开(公告)号：EP1661438A2
公开(公告)日：2006-05-31
申请号：EP04768000.4
申请日：2004-08-09
申请人： Pelikon Limited
发明人： FRYER, Christopher, James, Newton, 149 High Street , BLAKESLEY, Richard, Guy, c/o Pelikon Limited , BARNARDO, Christopher, John, A., 42 Grange Road , TYLDESLEY, William, Frank, c/o Pelikon Limited
CPC分类号： C09K11/02 , C09K11/565 , H01L27/3239 , H01L51/5203
摘要： Certain materials are electroluminescent, and this electroluminescent effect has been used in the construction of backlights for displays. Such a backlight commonly consists of a transparent front layer (11) known as the substrate carrying over its rear face a transparent electrically-conductive film (12) forming the backlight's front electrode and covered by a layer of electroluminescent/phosphor material (13) over the rear face of which is a high-dielectric layer (16) bearing on its rear face a conductive film (17) forming the back electrode. The whole is positioned behind a mask (18) that defines whatever characters the display is to show. This use of a mask has some disadvantages, some of which can be overcome by utilising an array of suitably shaped individual electrodes (21) instead of a continuous one; however, this itself has drawbacks, since the lead (22) to each electrode acts as an electrode in its own right, activating the phosphor to show faint but distracting additional illumination. The invention deals with this problem of track-derived tails; it proposes firstly that the electroluminescent material itself be shaped into discrete areas (43) each tightly matching in shape and size the relevant individual shaped back electrode (21), and secondly (or in addition) that there be used a shield layer (71) of electrically-conductive material shaped and sized as a negative of the shaped area back electrode (21) and positioned as an intermediate electrode between and aligned with the shaped area electrode (21) and the electroluminescent material layer (43), and given the same electrical potential as the front electrode (12).
摘要翻译： 某些材料是电致发光的，并且这种电致发光效应已经用于显示器背光的构造。 这种背光源通常由称为基板的透明前层（11）构成，后者在其背面上承载形成背光源前电极并由电致发光/磷光体材料（13）层覆盖的透明导电膜（12） 其后表面是高电介质层（16），在其背面上承载形成背电极的导电膜（17）。 整体位于面罩（18）的后面，该面罩定义显示器显示的任何字符。 掩模的这种使用具有一些缺点，其中一些可以通过利用适当形状的独立电极（21）而不是连续电极来克服; 然而，这本身具有缺点，因为到每个电极的引线（22）本身充当电极，激活磷光体以显示微弱但分散的额外照明。 本发明处理跟踪衍生的尾部的这个问题; 它首先提出，电致发光材料本身被成形为分离的区域（43），每个分区的形状和尺寸与有关的单独成形的背电极（21）紧密匹配，其次（或另外）使用屏蔽层（71） 的导电材料，该导电材料的形状和尺寸被设计为成形区域后电极（21）的负片并且被定位为在成形区域电极（21）和电致发光材料层（43）之间并与成形区域电极（21）和电致发光材料层（43）对准的中间电极， 电势作为正面电极（12）。
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公开(公告)号：EP1654911A2
公开(公告)日：2006-05-10
申请号：EP04768006.1
申请日：2004-08-09
申请人： Pelikon Limited
发明人： FRYER, Christopher, James, Newton , BLAKESLEY, Richard, Guy, c/o Pelikon Limited , BARNARDO, Christopher, John, Andrew , TYLDESLEY, William, Frank, c/o Pelikon Limited , POWELL, Mike, c/o Pelikon Limited , GREEN, Andrew, c/o Pelikon Limited
CPC分类号： F21V14/003 , G09G3/3208 , G09G3/3406 , G09G2320/0233
摘要： Certain materials are electroluminescent, and this electroluminescent effect has been used in the construction of backlights for displays. Such a backlight commonly consists of a transparent front layer (11) known as the substrate carrying over its rear face a transparent electrically-conductive film (12) forming the backlight's front electrode and covered by a layer of electroluminescent/phosphor material (13) over the rear face of which is a high-dielectric layer (16) bearing on its rear face a conductive film (17) forming the back electrode. The whole is positioned behind a mask (18) that defines whatever characters the display is to show. This use of a mask has some disadvantages, some of which can be overcome by utilising an array of suitably shaped individual electrodes (21) instead of a continuous one, and by shaping the electroluminescent material itself in discrete areas (43) each tightly matching in shape and size the relevant individual shaped back electrode (21). This latter, however, itself has drawbacks, for the colour of the phosphor commonly contrast with the colour of the surrounding insulating material, so that the discrete areas of phosphor may be visible under ambient light even when in their inactivated, 'off', state. The invention deals with this problem by proposing that there be modified - or apparently modified - the colour/reflectivity of one or other (or, indeed, both) of the phosphor (43) and the surrounding insulator material (16) so as to 2match' that of the other, and thus cause the phosphor and insulator material to blend with, and so be less distinguishable from, each other.
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