High‐uniformity 2T1C AMOLED panels by a built‐in trimming method

Abstract— A new built‐in trimming scheme boosting the OLED driving current through analog programming of the driver p‐channel TFT is proposed. By using a selective programming operation, the current variation on the LTPS panel can be reduced to less than 1%. Another blanket‐boosting method is investigated for concurrent programming of the entire panel. This blanket‐boosting scheme has been successfully demonstrated on a 2.4‐in. AMOLED panel where the non‐uniformity improved from 8.1 to 4.9% under a worst‐case condition.     

激光修整埋入无源元件的最佳设计

当设计具有埋入无源元件的PCB时,必须仔细考虑影响修整生产率和准确性的因素,而采用激光修整是最佳的。     

基于功能建模的多边折弯机规避与创新设计

探讨了如何在进行产品研发创新突破的同时还能有效规避专利侵权的风险。首先根据产品研发需求,全面准确地确定目标专利,有效提取专利技术特征中的明确组件与不明确组件。再通过组件分析确定组件层级,判断组件间的功能及类型,进行产品的功能建模。然后结合裁剪策略对功能建模的模型进行修剪,得到侵权风险较小的创新方案后,将方案次生问题转换成TRIZ标准问题,通过求解形成改进的创新方案。最后运用侵权判定原则和方法判定组合方案是否存在侵权风险。通过总结优化现有规避方法,得到基于TRIZ的创新规避方法,并以高效率的多边折弯机为研究对象,经判定运用该方法得到的方案无侵权风险,实际上该方法对不同行业领域的产品创新与专利规避设计均具有借鉴与指导意义。     

剪挤复合精整中凸模圆角对核心变形区应力状态的影响

目的为了提高剪挤复合精整加工零件的成形质量,研究了关键工艺参数对核心变形区应力状态的影响。方法利用理论分析的方法,确定了凸模圆角是影响核心变形区应力状态的关键工艺参数;进一步利用有限元模拟和物理实验相结合的方法,研究了不同凸模圆角半径对核心变形区应力状态的影响。结果在一定范围内,模具圆角越大,所提供的压应力也就越大。结论压应力可以抑制撕裂产生,从而降低成形面损伤,所以一定范围内增大模具圆角可以提高成形质量。     

有效降低厚板料冲裁模冲裁力的方法

介绍了厚板冲裁模冲裁力计算及通过波浪型刃口及阶梯型凸模的应用有效降低冲裁力,最终满足机床使用要求,并介绍了厚板修边冲孔模具结构的设计及模具的工作过程。     

刺绣机剪线长度控制方法的研究

在对电脑刺绣机剪线机构机械结构研究基础上,通过设计各种剪线试验和剪线长度实验数据的分析,全面分析了影响剪线长度的各种因素,从而设计优化剪线控制方式.本文还分析了电磁铁剪线方式经常出现剪线长度不一致原因.剪线长度不一致的问题与电控和机械都有关系.通过理论研究和实验验证,证明可以实现剪线长度的有效控制以及剪线长度不一致的问...     

中板2500滚切式双边剪故障分析及改进措施

通过对韶钢第二轧钢厂2500滚切式双边剪故障分析，提出并实施了改造措施，取得了良好的效果．     

Chebyshev Polynomials for Boxing and Intersections of Parametric Curves and Surfaces

Parametric curves and surfaces are powerful and popular modelling tools in Computer Graphics and Computer Aided Design. Ray-tracing is a versatile and popular rendering technique. There is therefore a strong incentive in developing fast, accurate and reliable algorithms to intersect rays and parametric curves and surfaces. We propose and demonstrate the use of Chebyshev basis functions to speed up the computation of the intersections between rays and parametric curves or surfaces. The properties of Chebyshev polynomials result in the computation of better and tighter enclosing boxes. For surfaces they provide a better termination criterion to decide on the limits of subdivision, and allow the use of bilinear surfaces for the computation of the intersection when needed. The efficiency of the techniques used depends on the relative magnitude of the coefficients of the Chebyshev basis functions. We show from a statistical analysis of the characteristics of several thousands surfaces of different origin that these techniques will result most of the time in significant improvement in speed and accuracy over other other boxing and subdivision techniques.     

建筑装饰工程施工管理过程质量控制

介绍了建筑装饰装修包括的内容,分析了目前装饰工程存在的问题,提出了确保装饰工程质量的具体措施,并对室内污染的防治进行了探讨,以确保装饰工程质量,从而促进装饰行业的发展.     

Impartial trimmed k-means for functional data

A robust cluster procedure for functional data is introduced. It is based on the notion of impartial trimming. Existence and consistency results are obtained. Furthermore, a feasible algorithm is proposed and implemented in a real data example, where patterns of electrical power consumers are observed.