电容式触摸屏项目计划书(精简)

项目计划书2014.04电容式触摸屏项目计划书（王祥）电话：[phone]E-mail：[e-mail]：12315681二〇一四年四月十二日第2页共14页目录1概述··········································································································································31项目内容···························································································································31.2所属领域························································································································31.3产品特性························································································································32技术与产品实现······················································································································32.1技术原理简介················································································································32.2关键技术························································································································42.3产品实现························································································································43支持条件··································································································································53.1基本条件························································································································53.2产能规划························································································································53.3设备及人员配置············································································································64设备清单和资金投入··············································································································84.1设备清单························································································································84.2厂房装修投入资金········································································································94.3前期投入资金················································································································95成本分析································································································································105.1P+G结构·······················································································································105.2G+FF结构·····················································································································116实施计划································································································································146.1车间装修计划表·········································································································146.2设备调试计划表··········································································································146.3人员培训计划表·········································································································14第3页共14页1概述1项目内容本项目关注的主要是以ITO导电薄膜或ITO导电玻璃为探测层的一种触控输入装置的生产加工和制造，生产工艺以非黄光工艺为主。本项目主要有两类产品：1）P+G结构的电容式触摸屏(有机玻璃盖板加双面ITO导电玻璃结构)2）G+FF结构的电容式触摸屏(玻璃盖板加双层ITO导电薄膜结构)本项目两类产品各涉及两种生产工艺：1）全印刷工艺。此工艺主要针对P+G结构的产品，该工艺成熟的制程能力为100μm的线宽和间隙，其特点是成本低廉，制程简单。2）印刷加激光蚀刻工艺。此工艺主要针对G+FF结构的电容式触摸屏，该工艺成熟的制程能力为40μm的线宽和间隙，其特点是成本较高，制程稍为复杂些。本项目主要以7英寸产品为主，产能规划为每天30K/日，月产能为1KK/月，由于大部分工序具有相容性，除非特别注明，以下主要以G+FF结构的电容式触摸屏为陈述对象。1.2所属领域微电子技术\电子信息1.3产品特性产品形态：工业中间产品\电子配件产品用途：触控技术产品特性：电子产品2技术与产品实现2.1技术原理简介基于电容型的触摸感应技术按照电容感应的方式目前主要有三类：①电场变化触摸感应技术；②基于弛张振荡器的触摸感应技术；③电荷转移型的触摸感应技术。投射式电容触摸屏(ProjectedCapacitiveTouch)触摸技术就是基于电场变化触摸感应技术的。电场传感器通常会使用一个数百kHz的正弦波，然后将这个正弦波信号施加于在电容的一个极板导电块上，并检测另外一个导电块上的信号电平。当用户的手指或另外的导体对象接触或接近两个导电块的时候，接收器上的信号电平将改变。通过解调和滤波极板上的信号，可获得一个直流电压，这个电压随电容的改变而变化。将这个电压与阀值电压进行比较，即可以产生触摸/无触摸的信号。采用单层或多层ITO层，形成矩阵式分布，以X轴、Y轴交叉分布做为电容矩阵，当手指触碰屏幕时，可通过X、Y轴的扫描，检测到触碰位置电容的变化，进而计算出手指之所在。基于此种架构，投射电容可以做到多点触控操作。图2-1投射式电容触摸屏SensorITO矩阵示意图。X1X2X3Xm-1Xm…Y1Y2Y3Yn-1Yn……图2-1投射式电容触摸屏SensorITO矩阵示意图第4页共14页2.2关键技术电容式触摸屏的开发需要驱动IC厂商、应用设备终端厂商、触摸屏制造厂商、操作软件厂商多方一起合作才行，定制化程度非常高。作为一个高度定制化产品，每一款产品的生命周期都非常短（iPhone手机相对长一点，其它手机一般不到半年），要求生产商必须有足够快的爬坡速度，在出货量昀集中的前三个月内就能迅速将良品率提高到非常高的水平，才能够有经济效益。2.2.1驱动芯片触摸屏模组三个主要组成部分Sensor、CoverLens和ControlIC，三者地位同等重要。其中IC厂商介于Sensor和下游客户，在推广触摸屏的过程扮演重要角色。这个行业有着完整的产业链细分，电容屏Sensor厂商和IC厂商是分开做的，各自专营自己精通的领域。IC决定了Sensor的制造工艺，也决定了终端应用的整个方案。但是，反过来，性能优良的触摸屏也可能影响IC的选择。因此，IC是触摸屏技术发展的关键。硬件方案设计、Sensor制造工艺的确定，都是围绕着IC展开的。2.2.2精密线路加工技术电容式触摸屏的生产制造关键在于精密线路加工技术。为满足终端设备显示区域不断缩小的布线空间，以及终端设备设计师更自由的设计空间要求，触摸屏的线路加工技术要求朝着不断精密化的方向发展。目前，黄光制程可以满足10μm以下线宽和间隙的要求。2.2.3材料科技触摸屏生产用的主要材料，如ITO导电薄膜、ITO导电玻璃、IC的关键技术主要掌握在美日韩等国家手里，大部分原材料主要从日、韩、美以及台湾进口，供应渠道比较集中。原材料成本占产品制造成本的70％以上，原材料的质量、价格及供货发生波动，可能影响本公司的正常生产。预计未来2到3年后，如石墨烯、金属网格、碳纳米技术等会实现稳定的国产量产化，替代传统的触摸屏原材料。2.3产品实现为应对触摸屏市场的快速变化，从技术角度讲，昀佳状况是主流技术我们都有能力制作，这样才能够更强的抵御市场风险。但结合实际状况，我们选择投入成本低、见效快的技术路线。2.3.1P+G结构电容触摸屏制造工艺流程ITOGlassMK1蚀刻膏印刷1ET1蚀刻/脱膜2PS银浆印刷5银浆印刷PS2CU28银浆固化9PT2保护胶印刷13CT分切14OCA光学胶下料CTCT21开孔/分切2贴合/测试贴OCAT1AM15组合盖板17AM218功能片电测T2电测20包装CO贴保护膜22OQC外观21PG包装23MK2蚀刻膏印刷3ET2蚀刻/脱膜4CU银浆固化6保护胶印刷PT17BDFPC绑定16PI绝缘油印刷11UVU