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    • 3. 发明授权
    • Method for broadening bandwidth of cholesteric liquid crystal
    • 胆甾型液晶带宽扩大的方法
    • US06669999B2
    • 2003-12-30
    • US09871397
    • 2001-05-30
    • Pao-Ju HsiehHui-Lung Kuo
    • Pao-Ju HsiehHui-Lung Kuo
    • C09K1900
    • C09K19/38C09K19/3068C09K2019/0448G02B5/3016Y10T428/1036
    • A method for making broadband cholesteric liquid crystals with improved bandwidth. The method includes the main steps of: (a) preparing a polymerization mixture containing first and second chiral liquid crystals, wherein the first chiral liquid crystal possesses a cholesteric liquid crystal phase and the second chiral liquid crystal possesses a helix-inversion characteristic, and at least one of the first or second chiral liquid crystals contains a polymerizable functional group; and (b) subjecting the polymerization mixture to a polymerization reaction, wherein the polymerization reaction is conducted such that the first chiral liquid crystal will go through a helix-inversion phenomenon. In a preferred embodiment, the second chiral liquid crystal has a temperature-dependent helicity which exhibits a helix inversion characteristic at a helix inversion temperature.
    • 制造带宽提高的宽带胆甾型液晶的方法。 该方法包括以下主要步骤:(a)制备含有第一和第二手性液晶的聚合混合物,其中第一手性液晶具有胆甾型液晶相,第二手性液晶具有螺旋反转特性, 第一或第二手性液晶中的至少一个含有可聚合官能团; 和(b)使聚合混合物进行聚合反应,其中进行聚合反应,使得第一手性液晶将经历螺旋反转现象。 在优选的实施方案中,第二手性液晶具有在螺旋反转温度下呈现螺旋反转特性的温度依赖性螺旋度。
    • 8. 发明授权
    • Weak base developable positive photoresist composition containing
quinonediazide compound
    • 含有醌二叠氮化合物的弱碱显影性正性光致抗蚀剂组合物
    • US5645970A
    • 1997-07-08
    • US547753
    • 1995-10-25
    • Hua-Chi ChengChao H. TsengPao-Ju Hsieh
    • Hua-Chi ChengChao H. TsengPao-Ju Hsieh
    • C08G8/04G03F7/023
    • C08G8/04G03F7/0236
    • A positive photoresist composition is disclosed which comprises a photosensitive compound, a phenolic resin, and an organic solvent. The phenolic resin is prepared from a monomeric composition comprises formaldehyde and a mixture of phenol monomers. The mixture of phenol monomers comprises: (a) no more than 98 mole percent of a mixture of monohydroxy phenols, the mixture of monohydroxy phenols comprises: (I) about 50.about.80 mole percent of meta-methylphenol; (ii) about 10.about.30 mole percent of 2,5-dimethylphenol; and (iii) about 10.about.40 mole percent of 2,3,5-trimethylphenol; and (b) at least 2 mol percent of at least one polyhydroxybenzene which is presented by the following formula: ##STR1## wherein n is an integer of 1 or 2. Preferably, the polyhydroxybenzene is a mixture of trihydroxybenzene and dihydroxybenzene in a molar ratio of about 40 to 60. The photoresist composition can be developed using a weak basic solution which causes images of sharp contrast to be developed; it can also be advantageously used in making color filters for use in color liquid crystal displays in a multiple development process in conjunction with an electrodeposition lithography.
    • 公开了一种正型光致抗蚀剂组合物,其包含光敏化合物,酚醛树脂和有机溶剂。 酚醛树脂由包含甲醛和苯酚单体的混合物的单体组合物制备。 苯酚单体的混合物包括:(a)不超过98摩尔%的单羟基酚的混合物,单羟基酚的混合物包含:(I)约50摩尔%的间甲基苯酚; (ii)约10%(重量)的30摩尔%的2,5-二甲基苯酚; 和(iii)约10%差异的40摩尔%的2,3,5-三甲基苯酚; 和(b)至少2mol%的由下式表示的至少一种多羟基苯:其中n是1或2的整数。优选地,多羟基苯是三羟基苯和二羟基苯的摩尔比的混合物 约40至60.光致抗蚀剂组合物可以使用弱碱性溶液显影,这导致形成鲜明对比度的图像; 在电沉积光刻中,也可以有利地用于在多重显影工艺中制造用于彩色液晶显示器的滤色器。
    • 9. 发明授权
    • Manufacture of color filters by incremental exposure method
    • 通过增量曝光法制造滤色片
    • US5641595A
    • 1997-06-24
    • US591201
    • 1996-01-16
    • Pao-Ju HsiehHsien-Kuang LinJim-Chyuan ShiehChao-Wen NiuChao-Huei TsengHwa-Chi Cheng
    • Pao-Ju HsiehHsien-Kuang LinJim-Chyuan ShiehChao-Wen NiuChao-Huei TsengHwa-Chi Cheng
    • G03F7/00G03F7/20G03F9/00
    • G03F7/0007G03F7/2022
    • A method for making color filters containing a color matrix with at least three desired colored layers comprising the steps of: (a) forming a positive energy-accumulable photoresist layer on a transparent electrically conductive substrate; (b) pre-conditioning the energy-accumulable photoresist layer to form at least three regions of different initial levels of exposure energy, from a highest to a lowest; (c) using a developer solution to develop and remove the region of the photoresist layer with the highest level of initial exposure energy to thereby cause a corresponding area of the electrically conductive substrate underlying the photoresist to be uncovered; (d) electrodepositing a photo-curable resin of a desired color and a predetermined exposure energy required for curing onto the uncovered area of the substrate; (e) overall-exposing the photoresist layer to a light source so as to impart an incremental exposure energy to all regions of the photoresist layer; (f) using a developer solution to develop and remove the region of the photoresist layer which has accumulatively attained the full exposure energy in step (e) and uncover a corresponding area on the substrate; (g) electrodepositing a photo-curable resin of another desired color onto the uncovered area of the substrate formed in step (f); and (h) repeating steps (e) through (g) until all the desired colored layers are selectively developed on the substrate. The incremental exposure energy is provided in step (e) such that: (i) it enables a region with a next highest initial exposure energy to attain full exposure energy, and (ii) it equals to or exceeds the exposure energy required for curing the photo-curable resin to thereby, at the same time, cause the photo-curable resin to become hardened.
    • 一种制备包含具有至少三个所需着色层的彩色矩阵的滤色器的方法,包括以下步骤:(a)在透明导电基底上形成正的可蓄积的光致抗蚀剂层; (b)预处理能量可聚合的光致抗蚀剂层,以形成从最高到最低的不同初始曝光能量的至少三个区域; (c)使用显影剂溶液以最高水平的初始曝光能量显影和去除光致抗蚀剂层的区域,从而使得光致抗蚀剂下面的导电基材的相应区域不被覆盖; (d)将所需颜色的光固化树脂和固化所需的预定曝光能量电沉积到基底的未覆盖区域上; (e)将光致抗蚀剂层全部曝光到光源,以便赋予光致抗蚀剂层的所有区域增加的曝光能量; (f)使用显影剂溶液来显影和去除在步骤(e)中累积获得完全曝光能量的光致抗蚀剂层的区域,并且露出基板上相应的区域; (g)将另一所需颜色的光固化树脂电沉积到在步骤(f)中形成的衬底的未覆盖区域上; 和(h)重复步骤(e)至(g),直到所有所需的着色层在衬底上选择性地显影。 在步骤(e)中提供增量曝光能量,使得:(i)它能够使具有下一个最高初始曝光能量的区域获得完全的曝光能量,和(ii)它等于或超过固化所需的曝光能量 光固化树脂,从而同时使光固化树脂变硬。
    • 10. 发明申请
    • BISTABLE DISPLAY MATERIALS AND METHODS AND DEVICES THEREOF
    • 双重显示材料及其方法及其设备
    • US20100321626A1
    • 2010-12-23
    • US12562391
    • 2009-09-18
    • Pao-Ju HsiehHui-Lung Kuo
    • Pao-Ju HsiehHui-Lung Kuo
    • C09K19/02
    • C09K19/52
    • A display material and method and device thereof are provided. The display material is first formed by evenly mixing appropriate weight ratios of DFLCs, incurable nanoparticles, curable nanoparticles, and a photoinitiator. Next, the evenly mixed mixture is disposed between two parallel conducting transparent substrates, wherein an electrical field is conducted thereto and the DFLCs therein aligned to the direction of the applied electrical field. Concurrently, under the applied electrical field, some curable nanoparticles within the evenly mixed mixture, form short nano chains, initiating the photo initiator. The frame structure of short nano chains stabilize both the clear and scattering states, thereby the bistable characteristic was improved and the contrast ratio was enhanced as applied to bistable displays.
    • 提供了显示材料及其方法和装置。 显示材料首先通过均匀混合适当重量比的DFLC,不可消耗的纳米颗粒,可固化纳米颗粒和光引发剂来形成。 接下来,将均匀混合的混合物设置在两个平行的导电透明基板之间,其中对其进行电场并且其中的DFLC与所施加的电场的方向对齐。 同时,在施加的电场下,在均匀混合的混合物中的一些可固化纳米颗粒形成短的纳米链,引发光引发剂。 短纳米链的框架结构稳定了清晰和散射状态,从而双稳态特性得到改善,对比度提高了,适用于双稳态显示器。