彩色滤光片制备方法概述

彩色滤光片是液晶显示器中实现彩色显示的重要部件,其制备工艺直接影响决定了彩色滤光片的性能。本文介绍了彩色滤光片结构及原理,比较分析了各种彩色滤光层的制作方法的优势和劣势,提出喷墨法由于具有快速、精准、材料利用率高等一系列优点,其已经成为制备大尺寸彩色滤光片极有竞争力的一项技术,并简要阐述喷墨法国内外的发展现状及。     

TFT-LCD彩色滤光片技术及其产业发展现状

作为液晶显示器件的重要组件,彩色滤光片影响着液晶显示的技术发展和制造成本的降低。文中介绍了液晶显示器使用彩色滤光片的基本结构及原理,比较并分析了各种滤光片彩色层制造方法的优势和局限性,指出喷墨打印制造彩色层是今后彩色滤光片技术发展革新的重要方向。根据国内外液晶产业发展现状,我国在大力发展TFT-LCD的同时,也应关注CF制备的新技术和新工艺研发。     

LCD彩色滤光片技术发展

在介绍液晶显示器用彩色滤光片结构的基础上,概述目前研究和生产领域的新技术。通过对彩色滤光集成技术与传统工艺的比较详细分析了该技术的优点,并回顾了彩色滤光片加工工艺技术的发展历程,并介绍了喷墨打印和干膜转移两项新技术的发展情况。     

彩色滤光片的技术创新

彩色滤光片是液晶显示器的重要部件，其制造成本相当高。近年来，喷墨打印、滚轮印刷、纳米压印等技术在彩色滤光片制造中的应用，大幅度降低了成本，在液晶显示器的普及方面起到了不可估量的作用，同时也为下一代有机EL的制造奠定了良好的技术基础。     

气溶胶喷墨打印在有机器件制备中的应用

气溶胶喷墨打印是近年来新出现的一种打印技术。通过将形成的墨水气溶胶喷射至基底表面而成膜,使得气溶胶喷墨打印对墨水的黏度要求低、打印分辨率好、适用墨水的范围广。文章对气溶胶喷墨打印技术的基本原理、在有机器件制备方面的应用以及将来的改进等方面进行了简介和评价。     

CCD彩色滤光片的制备与集成技术研究

介绍了彩色CCD的器件结构和成像原理,采用彩色光刻胶光刻法实现了彩色滤光片的制备,并通过分析彩色滤光片缓冲层、滤光片厚度和固化工艺等对滤光片性能的影响,获得了彩色滤光片的片上集成技术,并将其集成在512×512帧转移CCD器件上,完成了性能评价与成像验证.测试结果表明:制备的彩色滤光片主线透过率大于80％,光谱串扰小于15％,色纯度大于75％,集成该滤光片的彩色CCD成像色彩空间与sRGB相当,能够满足大多数CCD相机彩色成像的要求.     

MDP打印方式与众不同

纵观当今打印机世界，传统的针式打印机已逐渐为喷墨、激光打印机所代替。激光打印机在目前的情况下能实现高质量黑白文本打印，但是彩色打印成本过于昂贵，喷墨打印机经过不断的开发和完善，打印质量比针打有相当的提高，而且价格也已能被接受。但是现有喷墨方式靠喷嘴喷出的水溶性墨水，会因打印纸张的质量产生不同程度的渗水、颜色不均、褪色等问题，对纸张的要求过于苛刻。ＰＥＶＲＯＤＰ１２００ＭＤ彩色打印机采平了ＭＤＰ这一全新的打印技术．代表着彩色打印的趋势，它包括三个关键的技术。第一是打印头。过去，作为打印头的基板材料…     

喷墨打印PVP绝缘层柔性薄膜晶体管研究

柔性电子设备的快速发展对薄膜晶体管(TFT)提出了低功耗、耐弯折和可低温制备的要求.其中,栅极绝缘层是核心材料之一.溶液法制备有机栅极绝缘层具有低成本、柔韧性强的优点,适合大面积加工.本文采用喷墨打印法实现了聚乙烯吡咯烷酮(PVP)墨水的印刷成膜,采用XPS分析了不同退火温度处理的印刷PVP薄膜成分差异,并测试了PVP...     

王者之战——三款8色彩色喷墨打印机对比评测

在数码相机急速发展的今天，不仅带动了数码消费热潮，还带动了数码冲印市场的高速发展。目前数码冲印市场被分成了两块，一块是传统的；中印方式，主要是由富士、柯达提供冲印设备，建立数码冲印连锁店，用户拿着照片文件去冲印；另外一种方式为打印方式，用户使用佳能、爱普生、惠普等公司推出的照片级彩色喷墨打印机．让用户直接在家里打印照片，并且可以根据自己的爱好设计出独具特色的数码照片。随着打印技术的不断进步，使得彩色喷墨打印机的照片打印质量相当出色，特别是在推出了8色照片打印技术以来，取得了更加突出的进步。在2003年爱普生和惠普推出了8色照片级彩色喷墨打印机．在2004年中，另一打印巨头佳能也推出了具有自己特色的8色彩色喷墨打印机。因此，我们在第一时间邀请到了这三家厂商的代表产品．推出了此次专门针对8色高端彩色喷墨打印机的横向评测，希望对高端照片用户的选购有一定的帮助。参加本次评测的三款产品分别是Canon i9950、EPSON StyIUS Photo R800、hP photosmart 7960．     

延长彩色喷墨盒使用寿命的方法

使用彩色喷墨打印机打印彩色图案、文件、资料时,经常会遇到一个新的彩色喷墨盒刚刚打印几十页(与标准打印页数相差甚远),打印机即指示“墨尽”、发出“脱机”信号并停止工作的情况。此时,通常的做法是更换新墨水盒后再继续进行打印。而废弃的彩色喷墨盒中的各色     

Simultaneous UV embossing method for fabricating two parallel organic layers with different hydrophilicity

We developed a simultaneous UV embossing method to fabricate bank-shaped, two parallel layers with different surface properties in a one-step processing using the mold having loop-shaped protrusions. In conjunction with ink-jet technology, the molded pattern could be used as barrier ribs for particular flat panel displays. We choose the layer materials so that the bottom ink-philic one absorb jetted ink and the top ink-phobic one expel jetted ink. Therefore, the structure prevents ink from staining the barrier ribs’ surface and from mixing between adjacent pixels. The structure could be an effective barrier ribs for manufacturing of color filter of a liquid crystal display or light emitting layer of an electroluminescent display with high throughput.     

Ring-Edged Bank Array Made by Inkjet Printing for Color Filters

A mask-free inkjet printing (IJP) process has been developed to fabricate color filters. The coffee ring effect was used to create a ring-edged bank array with fine structures by IJP of poly(methylmethacrylate). After the color filtering inks were deposited in the banks, a color filter panel was made without any transitional photolithography process. The resulting color coordinates of the three primary colors on the chromaticity diagram are (0.70, 0.30), (0.33, 0.60) and (0.14, 0.09), respectively, covering 67.8% of the National Television System Committee standard. This process can be used with flexible substrates to produce low-cost inkjet printed color filters.     

Full color organic electroluminescent display with shared blue light-emitting layer for reducing one fine metal shadow mask

To make a full color organic electroluminescent display, conventionally it requires three fine metal shadow masks (FMM) to pattern the red, green and blue light-emitting layer. In this work, by arranging the blue light-emitting layer as a shared layer for all sub-pixels, we demonstrate that a full color display can be achieved by two FMM processes, thus reducing one FMM process compared to conventional method. The red, green and blue sub-pixels can be optimized independently despite the reduction of one FMM process. Also, the performance of the red and green sub-pixels is not degraded by the shared blue light-emitting layer. Due to elimination of one FMM, the process TACT time, mask cost and alignment error can all be reduced, thus cutting down the manufacturing cost of full color organic electroluminescent display.     

TFT-LCD用彩色滤光片

彩色滤光片作为液晶显示器件的关键组件,其性能直接影响显示器的对比度、亮度、视角乃至画面质量。本文阐述LCD用彩色滤光片的结构、特性和制取方法,着重介绍目前最常用的制取彩色滤光片的颜料分散法。彩色滤光片产业属于技术密集型产业,只有掌握相关的技术知识,打破国外在颜料领域的垄断,拥有自主知识产权,才能带动国内整个行业的发展。     

IER film and inkjet printing method for full-color transflective cholesteric LCD

A transflective cholesteric liquid crystal display (Ch-LCD) is demonstrated by using the image-enhanced reflector (IER) film on the top of the transmissive region to provide the similar paths for both transmissive and reflective light, thus, to display same image color in any ambience, improving the image quality. For full color display, the inkjet printing was applied and the patterned Ch-LC droplet was successfully deposited on the substrate. Thus, full-color Ch-LCD can be fabricated by IJP.     

Adaptive filtering for color filter array demosaicking.

Most digital still cameras acquire imagery with a color filter array (CFA), sampling only one color value for each pixel and interpolating the other two color values afterwards. The interpolation process is commonly known as demosaicking. In general, a good demosaicking method should preserve the high-frequency information of imagery as much as possible, since such information is essential for image visual quality. We discuss in this paper two key observations for preserving high-frequency information in CFA demosaicking: (1) the high frequencies are similar across three color components, and (2) the high frequencies along the horizontal and vertical axes are essential for image quality. Our frequency analysis of CFA samples indicates that filtering a CFA image can better preserve high frequencies than filtering each color component separately. This motivates us to design an efficient filter for estimating the luminance at green pixels of the CFA image and devise an adaptive filtering approach to estimating the luminance at red and blue pixels. Experimental results on simulated CFA images, as well as raw CFA data, verify that the proposed method outperforms the existing state-of-the-art methods both visually and in terms of peak signal-to-noise ratio, at a notably lower computational cost.     

有机纳米颜料对彩膜滤光片的对比度影响

彩膜滤光片主要采用有机纳米颜料体系为主,是因为颜料具有良好的热稳定性、耐光性和耐化学性,可以满足LCD的工艺制程。而颜料的颗粒属性,是影响彩膜滤光片穿透率和对比度的主要因素。在三原色中,绿色的亮度最高,对对比度的影响也最大。因此,本文主要研究一种具有广色域的绿色滤光片,其由3种有机纳米颜料组成颜料绿58(G58)、颜料黄138(Y138)、颜料黄185(Y185)。其中Y185的加入是基于其高的着色率,可以有效降低滤光片的膜厚;然而,即使少量Y185的加入(5%颜料比例)也会使得整体的对比度呈现明显下降(20%)。为解析Y185造成对比度偏低的原因,本文主要采用同步对比来分析两种颜料的粒径、n值(折射率)、晶型及形貌和荧光特性之间的差异。研究结果表明,Y185造成对比度偏低的主要原因是在成膜或者干燥过程中有机纳米颜料粒子的团聚。本文通过系统地研究有机纳米颜料造成对比度偏低的原因,为提升有机纳米颜料的对比度和制备高对比度的彩膜滤光片提供了理论依据和设计方向。     

Perovskite and Organic Solar Cells Fabricated by Inkjet Printing: Progress and Prospects

Inkjet printing (IJP) technology, adapted from home and office printing, has proven to be an essential research tool and industrial manufacturing technique in a wide range of printed electronic technologies, including optoelectronics. Its primary advantage over other deposition methods is the low‐cost and maskless on‐demand patterning, which offers unmatched freedom‐of‐design. Additional benefits include the efficient use of materials, contactless high‐resolution deposition, and scalability, enabling rapid translation of learning from small‐scale, laboratory‐based research into large‐scale industrial roll‐to‐roll manufacturing. In the development of organic solar cells (OSCs), IJP has enabled the printing of many of the multiple functional layers which comprise the complete cell as part of an additive printing scheme. Although IJP is only recently employed in perovskite solar cell (PeSC) fabrication, it is already showing great promise and is anticipated to find broader application with this class of materials. As OSCs and PeSCs share many common functional materials and device architectures, this review presents a progress report on the IJP of OSCs and PeSCs in order to facilitate knowledge transfer between the two technologies, with critical analyses of the challenges and opportunities also presented.