新型LCD用LED背光源

本文对新近研发的一些用于液晶显示(LCD)的发光二极管(LED)作了介绍,并对它们现存在的一些问题也作了说明.     

温差检测系统中的LCD控制设计

以新型高精度外冷器温差测量系统为背景，介绍了MCS80C196KC单片机与8279、LCD的接口原理以及系统实现的功能，详细阐述了液晶模块显示的软件实现方法．并对设计中的有关问题进行说明．     

Robust flexible LCDs with paintable technology

Abstract— In this article, second‐generation liquid‐crystal displays (LCDs) made by Paintable LCD technology is presented. With this technology, LCDs are manufactured by a sequence of simple coating and UV curing processes. Since the process can be carried out on plastic substrates and the stack of optical layers is only tens of micrometers thick, the resulting LCDs are ultra‐thin and flexible.     

智能数显回弹仪的研制

介绍智能数显回弹仪的功能、硬件组成及其工作原理，并对回弹值的数字化测量方法进行了分析。该仪器实现了回弹值的现场测量与强度换算的全过程自动化。其主要特点之一是采用全汉字操作菜单，现场操作十分简便，开发了与之配套的上位机资料处理软件，对下位机传输的现场测量信息进行处理，形成检测报告。对系统软件结构，编程技术，软件设计思想进行了介绍，并给出了下位机主要软件设计流程图。该仪器已有效地应用于工程建筑行业检测领域。     

基于P89V51RD2和SED1335的CGM320240 LCD模块控制的设计

本文介绍实际使用过程中的一种用单片机P89V51RD2和SED1335液晶控制器控制LCD显示模块的软硬件设计，对设计过程中存在的难点和疑点进行解析，为各种便携式系统的显示前端提供一种参考。     

基于特征提取与识别两阶段的汽车电机轴承故障诊断

针对特征提取和故障识别这两个轴承故障诊断的关键环节,提出一种汽车电机轴承故障诊断新方法。该方法在特征提取环节:提出了将LCD分解和符号熵(SE)相结合的特征提取方法;在故障识别环节为提高果蝇算法(FOA)对相关向量机(RVM)参数的寻优能力,在FOA算法中增加了向"历史"学习的策略,提出具有历史学习能力的果蝇算法(HSAFOA),有效地提升了RVM的分类性能。汽车电机轴承不同类型、不同程度故障诊断实例表明,LCD符号熵可有效对故障进行表征,而HSAFOA算法则提升了RVM的识别效果,相比于其他一些方法更有优势。     

On the origin of fine structure in the photoluminescence spectra of the β-sialon:Eu2+ green phosphor

Abstract

The photoluminescence (PL) and PL excitation (PLE) spectra of Si_6?zAl_zO_zN_8?z (β-sialon):Eu²⁺ phosphors with small z values (z=0.025–0.24) were studied at room temperature and 6 K. The PL and PLE spectra exhibit fine structure with the PL lines being as sharp as 45–55 nm even at room temperature; this fine structure was enhanced by decreasing the z value. These results can be used for expanding the color gamut of liquid crystal displays, particularly in the blue–green region. From low-temperature measurements, the fine PLE structure was ascribed to discrete energy levels of ⁷F_J states. The 4f⁶5d excited states of Eu²⁺ are considered to be localized near the 4f orbital. This is because the bonding of Eu²⁺ with surrounding atoms is ionic rather than covalent. Lattice phonon absorptions were also observed in the PLE spectrum, revealing that the optically active Eu²⁺ ions are located in the β-sialon crystal. The PL spectrum of the sample with the smallest z value (0.025) consists of a sharp zero-phonon line and lattice phonon replicas, which results in a sharp and asymmetric spectral shape.     

基于HGO12864A液晶的显示控制设计

传统的显示设备需要供应电压较高,功耗较大,已无法适应便携式仪器仪表的要求,文中介绍了一种低电压、低功耗的液晶显示器HGO12864A,设计了倍压电路,只需3 V的电压便可驱动,采用MSP430直接控制,并给出了串口显示控制方案,能显示字符、图片。通过在单片机RAM区模拟显示,能动态地显示曲线,通过实验证明,得到了很好的显示效果。     

液晶电视整机模组一体化结构优化设计

本文主要通过与传统电视结构的简单对比介绍了液晶电视整机模组的一体化结构设计的技术特征，并在原有一体化结构设计的基础上提出了一种优化结构。     

Evaluating sub-pixel functional defects of a display using an arbitrary resolution camera

An automatic optical inspection system to evaluate functional defects of sub-pixel elements in image displays is proposed, which is based on a single full-field imaging sensor. In order to circumvent sampling aliasing, the display is addressed with a set of grid patterns whose defocused optical images imitate a lower resolution display. The cross-talk between the sensor and the display primary colors is corrected by means of a linear transformation between their color-spaces. Dark and bright dots are located and quantified by applying a notch multi-band Fourier filter to the sensor images. The technique is simple, robust, and easily scalable, since only one image sensor is required, no moving parts are used, and the sensor can be reused to analyze increasing resolution displays.