多功能汽车仪表盘的设计与研究

本文介绍了以PIC18f458单片机及扩展电路构成的全液显汽车仪表盘的设计思想及软件、硬件设计技术。该仪表盘不仅可以代替传统的汽车仪表盘独立运行，也可以作为CAN总线控制汽车的一个节点运行。     

LCD用三防功能膜技术

本文简述了LCD用抗划伤、防眩、防静电膜技术原理、涂膜结构和技术进展,并对三防功能膜技术今后的发展趋势和方向进行了分析。     

Investigation of the interaction between rubbing cloth and pattern structure on in‐plane‐switching liquid‐crystal displays

Abstract— For the rubbing process, there have been several problems, especially scratching, disclination, and light leakage that increases the black luminance of a panel because the alignment of the liquid crystals might not be uniform due to a fluctuation in the fine‐rubbing direction. To investigate the basic causes of these problems, several experiments concerning the characteristics of the rubbing cloth and the pattern structures on an LCD substrate were carried out. A new mechanism regarding the interaction between the rotation of filaments on the rubbing cloth and the structure of patterns on the IPS‐LCD substrate is proposed. There is a correlation between the filament's rubbing direction and the pattern angle of the substrate. A new rubbing method based on two types of rubbing cloths were introduced to improve the rubbing density. As a result, it was determined that the black luminance was relatively reduced by using this method compared with that of conventional rubbing processes.     

一种智能电能表液晶循显内容自动检测的方法

介绍一种在智能电能表自动检定流水线的LCD液晶显示单元中,通过电能表的RS485通讯接口和专用的协议指令,控制电能表切换到指定显示状态,再通过智能相机拍照,从而实现检测智能电能表液晶循环显示内容及指示灯的方法。此方法不仅实现了智能电能表液晶循环显示的检测,还不增加设备故障点、不影响检测节拍,使检测完善、简便、先进、高效。     

Automatic defect inspection system of colour filters using Taguchi-based neural network

A coloured filter is a critical part of an LCD panel, especially to present a high quality colour display. At present, the defect detection of colour filters is conducted by manual inspection in the final product stage. However, poor detection efficiency and subjective judgment of manual inspection undermine accuracy. Therefore, this study applied image processing technology and the neural network to detect surface defects of colour filters in order to prevent losses arising from incorrect detection, lower production costs, and effectively improve yield. A back-propagation neural network (BPNN) classifier was selected to train the features. The results showed that the proposed method can be successfully applied in defect detection of colour filters to reduce artificial detection errors. In addition, the Taguchi method was used with BPNN to save time searching optimal learning parameters by the trial and error method, which achieves faster convergence, smaller convergent errors and better recognition rate. The results proved that the root-mean-square error (RMSE) of the Taguchi-based BPNN at final convergence is 0.000254, and recognition rate reaches 94%. Therefore, the proposed method has good effects in detecting the micro defects of a colour filter panel.     

The Relationship between Innovation and Market Share: Evidence from the Global LCD Industry

We investigate the impact of technological capability on firm market share using technology investment data in the global thin-film-transistor liquid-crystal-display panel industry from 1999 to 2007. The Arellano–Bond estimation of the dynamic panel model indicates that prior technological capability is positively correlated with current market share. The magnitude of this effect appears economically substantial: an improvement of technological capability by one standard deviation implied a permanent increase of 2.6 percent-point in quarterly market share, a return tantamount to $470 million in 2007 sales. The Granger test reveals that technological capability helps to predict future market share, but that the inverse is not true.     

透明显示技术的进展

随着显示技术的日益发展,各种新型技术不断涌现,透明显示技术因其透明的显示面板这一特性及其独特的应用,越来越受到人们的关注。通过对透明显示技术的发展进行概述,介绍了近些年来逐渐应用于透明显示的LCD、OLED、PDP等主流显示技术以及一些新型的透明显示技术,以器件结构和工艺为重点阐述了透明显示技术的基本原理和实现条件。     

89C51与OCMJ12232液晶显示模块的接口设计

文章介绍了液晶显示模块OCMJ12232的结构和功能,对其工作原理进行了深入研究,并设计了89C51单片机与液晶模块的接口电路,给出了核心部分显示的汇编语言程序。该设计具有I/O口线占用少、驱动程序简单的优点。     

LCD偏光片贴片工艺技术研究

随着近几年液晶显示技术在诸多领域的广泛应用和新技术的推出,对液晶生产工艺的要求也越来越高。在液晶显示器的后工序生产制造中,偏光片贴附是关键工序,所以贴片是影响产品质量和生产效率的主要关键工序之一,现代化流水生产线对贴片工艺设备有高精度、高效率及高可靠性要求。文章主要介绍了LCD玻璃后工序制程中的贴片工艺,针对现有贴片工艺设备所存在的缺陷,对贴片工艺设备的关键技术和如何提高贴片的良品率做了分析。     

现代显示的现状及发展

近年来显示技术发展很快,平板显示以其诸多优点独占显示鳌头,在平板显示中又以等离子和液晶为主流显示方式,OLED、FED、电子纸的新型显示技术也在不断进步。液晶显示的光源正逐渐从CCFL向LED过渡,到2019年LED背光源液晶显示仍然占显示主导位置。