OLED显示模块与AT91RM9200的接口设计

在简要介绍点阵式OLED模块的显示驱动芯片SSD1303的基础上,着重讨论台湾铼宝公司内嵌SSD1303驱动芯片的超薄OLED显示屏P13501;给出它与AT91RM9200的接口电路设计,以及在嵌入式Linux下OLED显示屏P13501的驱动编程.     

基于C8051F的OLED控制电路的设计

设计了一种有机电致发光显示器的控制电路,可用于128×64的单色OLED点阵显示屏.结合OLED显示屏特性和驱动芯片SSD1303的功能特性,该系统实现了OLED显示屏的文字和图片的动静态显示.并提出了一种相时简单的软件实现显示的方法,和通过字模提取软件提取所需显示代码的方法.     

超薄显示屏OLED在陀螺经纬仪中的应用

在简要介绍Solomon公司出品的CMOSOLED/PLED显示驱动SSD1303芯片的基础上,重点讨论台湾铼宝公司最新产品——内嵌SSD1303驱动芯片的超薄OLED显示屏P09703在陀螺经纬仪中的应用问题,给出了硬件电路图和软件流程图,为开发带有显示屏的便携设备提供参考。     

可穿戴设备显示系统的低功耗控制

可穿戴设备的显示系统往往受其体积和功耗的限制而非常的小巧,近些年来OLED显示屏因为较LCD显示屏有刷新速度快、功耗低的诸多优点,被广泛采用在可装戴设备中,如智能手表、可穿戴医疗仪器等.本文采用MSP430F1611低功耗处理器模拟SPI协议对OLED显示屏控制,并采用低功耗技术处理,实现了低功耗的可穿戴设备的显示系统.     

单片机控制的OLED全彩色静态和动态视频图像显示

构建了以单片机为控制器的OLED显示系统,分析了显示驱动芯片的工作原理。在PC机上生成图像数据流,该数据流经RS-232串口或USB接口传输到与单片机外接的数据存储器,单片机控制读取存储器中的数据,在OLED显示屏上实现各种全彩色字符、静态图像和视频动态图像显示。     

单片机控制的OLED全彩色静态和动态视频图像显示

构建了以单片机为控制器的OLED显示系统,分析了显示驱动芯片的工作原理.在PC机上生成图像数据流,该数据流经RS-232串口或USB接口传输到与单片机外接的数据存储器,单片机控制读取存储器中的数据,在OLED显示屏上实现各种全彩色字符、静态图像和视频动态图像显示.     

OLED矩阵显示屏控制电路的设计

本文论述了OLED矩阵显示屏的制作方法,并利用OLED控制驱动电路SSD1303和单片机AT89C51成功驱动了该显示屏,为OLED的实际应用提供了一种可行的方法.     

OLED无源驱动技术应用

就现有OLED的技术状况进行了阐述,并结合对实验用OLED显示屏驱动电路的设计讲述OLED的无源驱动方式。     

OLED无源驱动技术应用

就现有OLED的技术状况进行了阐述,并结合对实验用OLED显示屏驱动电路的设计讲述OLED的无源驱动方式.     

显示设备

OLED显然已经成为今后显示器的发展趋势，其最大的特点便是超低功耗与极强的色彩表现力，而且不存在响应时间的缺陷。目前已经有很多MP5以及Dc显示屏采用OLED，而未来显示器采用OLED也只是时间问题，毕竟12英寸OLED面板已经量产化，未来潜力将非常乐观。     

MEMS无线数显角度测量仪设计

针对双轴或单轴高精度角度测量的工况需要,采用8位单片机为主控芯片,高精度数字MEMS为传感器芯片设计了一种体积小、功耗低的无线数显角度测量仪.远端上位机通过ZigBee无线模块对测量仪进行操作和三维显示,同时集成OLED屏可就地显示测量数据.具有双轴±90°倾角测量和单轴绝对式0°~360°转角测量功能.测试结果表明:该测量仪测量精度为0.1°,具有较高的推广应用价值.     

Anode‐voltage‐control circuit for compensation of luminance deterioration

Abstract— An external driving circuit that has realized long lifetime, power‐consumption control, and peak luminance for organic light‐emitting diode (OLED) displays have been developed. This circuit realizes an effective method for constant‐anode‐voltage (CV) driving refered to as clamped inverter (CI) driving. The feature of CV driving is to achieve low‐power consumption compared with constant‐anode‐current (CC) driving and to control the power consumption and peak luminance according to the image because display luminance can be easily changed by controlling the anode voltage. On the other hand, CV driving has the problem that luminance deterioration appears to be serious compared with that of CC driving because the current of the OLED element decreases according to usage time. To cope with this, a lifetime compensation circuit that has increased the anode voltage so that it compensates for the luminance deterioration has been developed. This circuit can compensate not only the decrease in current but also the decrease in luminance at a constant current that CC driving cannot. However, increasing the anode voltage causes an increase in stress on the OLED element. The influence of stress on OLED lifetime was verified. As a result, it was confirmed that this circuit can extend the lifetime by 32% even if the anode voltage is increased, causing stress on the OLED structure.     

基于STM32的健康一体机控制系统的设计

设计与实现了一种基于STM32芯片、用于居家环境下的健康一体机控制系统.该系统由电源管理模块、蓝牙模块、SD卡模块、OLED显示模块等几部分组成,可以用于控制与处理多生理参数模块采集到的心电、血氧饱和浓度、血压、脉搏率、呼吸率、体温等人体生理信息数据,并且可以对数据解析进行OLED屏显示以及通过蓝牙或串口发送给外界显示设备进行显示.系统利用模块化设计理念,可以适应不同多生理参数采集模块,具有多功能、扩展性能好、可移植性高等特点.同时,系统利用OLED屏进行显示,区别于传统的医用大型设备,有效地减小了设备体积,降低了设备使用功耗,便于居家环境下使用.     

A high image quality organic light‐emitting diode display with motion blur reduction for ultrahigh resolution and premium TVs

In this paper, we present a high image quality organic light‐emitting diode (OLED) display with motion blur reduction technology. Our latest work includes driving method that reduces motion blur using an adaptive black data insertion, brightness compensation technology, the simple structure pixel with low capacitance coupling for horizontal noise, and the multifunction integrated gate driver. The moving picture response time (MPRT) value of the OLED display panel with a fast response time was significantly affected by the frame frequency and the compensation driving method. The MPRT value of the large‐size OLED display panels was significantly decreased by using the integrated gate driver circuit with an MPRT reduction method. The decrease in the MPRT value originated from the turning of the emitting pixels off in advance resulting from providing black data. The integrated gate drivers were designed to achieve the normal display, the black data insertion, and the compensation mode. The MPRT value of the 65‐in. ultrahigh‐definition (UHD) OLED panels was decreased to 3.4 ms by using an integrated gate driver circuit. The motion blur of large‐size OLED display panels was significantly reduced due to a decrease in the MPRT value.     

Development of 8‐in. oxide‐TFT‐driven flexible AMOLED display using high‐performance red phosphorescent OLED

An 8‐in. flexible active‐matrix organic light‐emitting diode (AMOLED) display driven by oxide thin‐film transistors (TFTs) has been developed. In‐Ga‐Zn‐O (IGZO)‐TFTs used as driving devices were fabricated directly on a plastic film at a low temperature below 200 °C. To form a SiO_x layer for use as the gate insulator of the TFTs, direct current pulse sputtering was used for the deposition at a low temperature. The fabricated TFT shows a good transfer characteristic and enough carrier mobility to drive OLED displays with Video Graphic Array pixels. A solution‐processable photo‐sensitive polymer was also used as a passivation layer of the TFTs. Furthermore, a high‐performance phosphorescent OLED was developed as a red‐light‐emitting device. Both lower power consumption and longer lifetime were achieved in the OLED, which used an efficient energy transfer from the host material to the guest material in the emission layer. By assembling these technologies, a flexible AMOLED display was fabricated on the plastic film. We obtained a clear and uniform moving color image on the display.     

基于MLA改进算法的STN LCD驱动控制芯片显示电路的设计

提出一种改进的MLA驱动算法,并基于该算法完成了STN LCD驱动控制芯片显示电路的设计,包括MLA矩阵控制电路、行时序电路和极性反转电路。对设计结果进行了综合及功耗分析,结果表明,采用改进算法设计的显示电路模块的面积和功耗得到有效优化。     

一种低功耗多功能手持射频读卡仪设计

介绍了一种多功能、低功耗便携式射频读卡器的设计方法。该读卡器采用Ⅱ公司的低功耗微控制器MSP430F149作为主控芯片。结合射频基站芯片U2270B实现TEMIC系列射频卡的读写功能，并采用2560芯片和HT1621B芯片分别实现语音功能和数显功能。给出了各部分的硬件电路设计原理图，描述了各个功能的实现方法，并采用了多种方法以降低系统的功耗。该便携式读卡器具有体积小、存储容量大、读写速度快、扩展性好、功耗低等特点。已成功应用于停车场收费系统中。     

Performance of high‐efficiency AMOLED displays

Abstract— In this paper, the performance of active‐matrix‐driven small‐molecule OLED displays incorporating high‐efficiency electrophosphorescent dopants were analyzed. These enable triplet excitons to contribute to light emission and have led to pixel efficiencies of over 40 lm/W. By considering a conventional two TFT per pixel addressing scheme, we show how this OLED design enables the fabrication of very‐low‐power‐consumption displays (lower than AMLCDs). We simulate display performance and perform a trade‐off analysis comparing the power consumption of displays driven by both amorphous‐silicon and low‐temperature poly‐Si TFTs.     

Model for assessing organic light‐emitting diode display lifetime across applications

A model for assessing organic light‐emitting diode (OLED) display lifetime is developed and discussed for estimating OLED display lifetime in various applications. The lifetime model extends existing stretched exponential models of luminance decay for OLED devices to permit this decay to be estimated as a function of time and current density. This extended model is illustrated within an application to assess the power consumption and luminance decay of diodes within an OLED display. Various metrics of display lifetime are discussed with the aim of developing methods to assess the perceived lifetime of an OLED display to global and local luminance decay mechanisms. Finally, these metrics are applied to illustrate the performance of the model for assessing the impact of an image processing algorithm on OLED display lifetime.     

A reduced‐voltage differential signaling (RVDS) interface for chip‐on‐glass TFT‐LCD applications

Abstract— Reduced‐voltage differential signaling (RVDS) is a novel interface for TFT‐LCD panels with a chip‐on‐glass (COG) structure, which has a point‐to‐point topology and a voltage mode differential signaling scheme. The voltage‐driving interface scheme has advantages in high‐speed operation owing to its relatively small time constant for the resistive channel condition. And reduced‐voltage signaling can reduce the power consumption of a transmitter. The display source driver IC with an RVDS interface, which is fabricated by using a 0.25‐μm CMOS process with a 2.5‐V logic supply voltage, offers a high data rate up to 500 Mbps, low‐current consumption of 2.2 mA, and good EMI characteristics. Also, an RVDS interface has programmable options that control the bandwidth, system power, and EMI performance. Therefore, the RVDS interface is a competitive solution for low‐power, low‐cost, and slim notebook applications.