Process for roll-to-roll manufacture of a display by synchronized photolithographic exposure on a substrate web

    公开(公告)号:US06933098B2

    公开(公告)日:2005-08-23

    申请号:US09784972

    申请日:2001-02-15

    摘要: This invention relates to an electrophoretic display or a liquid crystal display and novel processes for its manufacture. The electrophoretic display (EPD) of the present invention comprises microcups of well-defined shape, size and aspect ratio and the microcups are filled with charged pigment particles dispersed in an optically contrasting dielectric solvent. The liquid crystal display (LCD) of this invention comprises well-defined microcups filled with at least a liquid crystal composition having its ordinary refractive index matched to that of the isotropic cup material. A novel roll-to-roll process and apparatus of the invention permits the display manufacture to be carried out continuously by a synchronized photo-lithographic process. The synchronized roll-to-roll process and apparatus permits a pre-patterned photomask, formed as a continuous loop, to be rolled in a synchronized motion in close parallel alignment to a web which has been pre-coated with a radiation sensitive material, so as to maintain image alignment during exposure to a radiation source. The radiation sensitive material may be a radiation curable material, in which the exposed and cured portions form the microcup structure. In an additional process step, the radiation sensitive material may be a positively working photoresist which temporarily seals the microcups. Exposure of a selected subset of the microcups via the photomask image permits selective re-opening, filling and sealing of the microcup subset. Repetition with additional colors permits the continuous assembly of a multicolor EPD or LCD display.

    Process for roll-to-roll manufacture of a display by synchronized photolithographic exposure on a substrate web
    3.
    发明授权
    Process for roll-to-roll manufacture of a display by synchronized photolithographic exposure on a substrate web 失效
    通过在衬底幅材上同步的光刻曝光来卷对卷制造显示器的方法

    公开(公告)号:US06906779B2

    公开(公告)日:2005-06-14

    申请号:US10366813

    申请日:2003-02-13

    摘要: This invention relates to an electrophoretic display or a liquid crystal display and novel processes for its manufacture. The electrophoretic display (EPD) of the present invention comprises microcups of well-defined shape, size and aspect ratio and the microcups are filled with charged pigment particles dispersed in an optically contrasting dielectric solvent. The liquid crystal display (LCD) of this invention comprises well-defined microcups filled with at least a liquid crystal composition having its ordinary refractive index matched to that of the isotropic cup material. A novel roll-to-roll process and apparatus of the invention permits the display manufacture to be carried out continuously by a synchronized photo-lithographic process. The synchronized roll-to-roll process and apparatus permits a pre-patterned photomask, formed as a continuous loop, to be rolled in a synchronized motion in close parallel alignment to a web which has been pre-coated with a radiation sensitive material, so as to maintain image alignment during exposure to a radiation source. The radiation sensitive material may be a radiation curable material, in which the exposed and cured portions form the microcup structure. In an additional process step, the radiation sensitive material may be a positively working photoresist which temporarily seals the microcups. Exposure of a selected subset of the microcups via the photomask image permits selective re-opening, filling and sealing of the microcup subset. Repetition with additional colors permits the continuous assembly of a multicolor EPD or LCD display.

    摘要翻译: 本发明涉及一种电泳显示器或液晶显示器及其制造方法。 本发明的电泳显示器(EPD)包括明确形状,尺寸和纵横比的微杯,并且微杯充满分散在光学对比介电溶剂中的带电颜料颗粒。 本发明的液晶显示器(LCD)包括充满至少液晶组合物的明确定义的微杯,其具有与各向同性杯材料相匹配的普通折射率。 本发明的新颖的卷对卷工艺和设备允许通过同步的光刻工艺连续进行显示器制造。 同步的卷对卷工艺和设备允许形成为连续环的预先图案化的光掩模以与预辐射敏感材料的纤维网紧密平行对准的同步运动滚动,因此 以便在暴露于辐射源期间保持图像对准。 辐射敏感材料可以是可辐射固化的材料,其中暴露和固化的部分形成微型杯结构。 在另外的工艺步骤中,辐射敏感材料可以是临时密封微型杯的正性光致抗蚀剂。 通过光掩模图像曝光微杯的选定子集允许选择性重新打开,填充和密封微杯子集。 使用附加颜色重复可以连续组装多色EPD或LCD显示屏。

    Electrophoretic display with color filters
    8.
    发明授权
    Electrophoretic display with color filters 有权
    带彩色滤光片的电泳显示

    公开(公告)号:US06850355B2

    公开(公告)日:2005-02-01

    申请号:US10206859

    申请日:2002-07-26

    CPC分类号: G02F1/167

    摘要: This invention relates to an electrophoretic display comprising a transparent top viewing electrode, a bottom electrode and a plurality of isolated cells having well-defined size, shape and aspect ratio, said cells filled with charged pigment particles dispersed in a dielectric solvent or solvent mixture, and a color filter placed with the top transparent electrode.

    摘要翻译: 本发明涉及一种电泳显示器,其包括透明的顶部观察电极,底部电极和具有明确尺寸,形状和纵横比的多个分离的电池,所述电池填充有分散在介电溶剂或溶剂混合物中的带电颜料颗粒, 以及与顶部透明电极放置的滤色器。

    Compositions and processes for format flexible, roll-to-roll manufacturing of electrophoretic displays
    9.
    发明授权
    Compositions and processes for format flexible, roll-to-roll manufacturing of electrophoretic displays 有权
    用于格式化的电泳显示器的卷对卷制造的组合和工艺

    公开(公告)号:US06873452B2

    公开(公告)日:2005-03-29

    申请号:US10422608

    申请日:2003-04-23

    摘要: The present invention is directed to a process which comprises removing and stripping off part of the display panel in order to expose and connect the conductor lines on an electrode plate to a driver circuitry. More specifically the process involves (1) preparing a display panel having filled display cells sandwiched between a first and a second substrate layers, preferably by a roll-to-roll process; (2) removing part of a first substrate by asymmetrical cutting by, for example, a die, diamond, knife or laser cutting method to expose the layers underneath (which may include adhesive layer, primer layer, display cell layer and in the case of a display prepared by the microcup technology, the microcup layer and the sealing layer); and (3) stripping off the exposed layers by a stripping solvent or solution. After stripping, the conductor lines on the second substrate are exposed and ready for connection to the driver circuitry.

    摘要翻译: 本发明涉及一种方法,其包括去除和剥离部分显示面板,以便将电极板上的导体线暴露并连接到驱动器电路。 更具体地,该方法包括(1)优选通过卷对卷方法制备具有夹在第一和第二基底层之间的填充显示细胞的显示面板; (2)通过例如模具,金刚石,刀或激光切割方法的不对称切割来去除第一基板的一部分,以暴露下面的层(其可以包括粘合剂层,底漆层,显示单元层,以及在 通过微型杯技术制备的显示器,微杯层和密封层); 和(3)通过剥离溶剂或溶液剥离暴露的层。 剥离后,第二基板上的导体线被暴露并准备连接到驱动器电路。

    Methods of surface modification for improving electrophoretic display performance
    10.
    发明授权
    Methods of surface modification for improving electrophoretic display performance 有权
    改善电泳显示性能的表面改性方法

    公开(公告)号:US06870662B2

    公开(公告)日:2005-03-22

    申请号:US10429016

    申请日:2003-05-02

    摘要: The present invention is directed to methods for improving the performance of an electrophoretic display by modifying the display cell surface. More specifically, the methods are directed to modification of the microcup surface after the microcups are released from the mold. The microcups which have undergone any of the treatment methods of the invention show significant improvement in their surface properties, such as chemical functionality, surface roughness, surface tension, morphology, surface charge, surface reflectivity, surface conductivity and optical properties, particularly optical density in the visible light region. An electrophoretic display formed from the treated microcups has many advantages. For example, the display shows a higher contrast ratio, lower electro-optic response time, lower driving voltage, longer shelf life, higher imageincreasing bistability and higher threshold voltage. In addition, it exhibits an improved image quality by reducing undesirable scum formation or irreversible particle deposition on the microcup surface.

    摘要翻译: 本发明涉及通过修改显示单元表面来提高电泳显示性能的方法。 更具体地,该方法涉及微型杯从模具中释放后的微杯面的修改。 已经经历本发明任何处理方法的微杯显示出其表面性能的显着改进,例如化学官能度,表面粗糙度,表面张力,形态,表面电荷,表面反射率,表面电导率和光学性能,特别是光密度 可见光区域。 由经处理的微型杯形成的电泳显示器具有许多优点。 例如,显示器显示出较高的对比度,较低的电光响应时间,较低的驱动电压,更长的保质期,更高的图像增加双稳态度和更高的阈值电压。 此外,它通过减少微型杯表面上不期望的浮渣形成或不可逆的颗粒沉积来显示出改进的图像质量。