小尺寸OLED拼接屏的设计与实现

发布时间：2018-03-10 13:53

本文选题：拼接显示　切入点：OLED模块　出处：《电子科技大学》2017年硕士论文　论文类型：学位论文

【摘要】：在目前的信息社会,对信息的显示量的要求越来越高。拼接显示可以解决对信息显示的要求,主要包括LCD拼接、PDP拼接、LED拼接、LCD投影拼接和DLP拼接等。目前不少公司推出了OLED拼接屏,OLED具有阴极射线管(CRT)和LCD的综合优点,是全固体化器件。它具有薄而轻、高亮度、温度范围宽、响应速度快、视角宽、对比度高和驱动电压及功耗低等优点。OLED被称为第3代显示器、21世纪的平板显示,是LCD的升级更新产品。拼接显示主要集中于中、大尺寸屏幕显示,小尺寸的显示屏拼接报道很少。研究OLED拼接显示系统具有广泛的工程应用前景,基于科学研究需要,本文对小尺寸OLED的拼接设计进行了探索研究。基于ARM7嵌入式系统芯片LPC2138,设计了OLED屏拼接显示系统,采用了4个2.8"全彩OLED模块进行拼接。系统基于ARM7系列的2片LPC2138为控制核心,分别各向2个OLED驱动控制器S6E63D6提供时序控制信号和图像数据信号,从而实现4个OLED屏的全彩显示。系统硬件采用模块化设计,包括OLED拼接屏母板电路和子板电路两部分。OLED模块如果有损坏,只需要通过更换子板,拼接系统即可正常工作。母板电路是系统的核心电路:包含电源、ARM晶振、JTAG、复位电路和外围电路。母板电路以两片LPC2138为核心,每片LPC2138驱动两个OLED屏,提供4个双排插口给子板的4个OLED屏。子板电路包含四块显示屏的拼接接口电路和外围电路,分别将4个S6E63D6的接口部信号引到4个双排插口上,与母板对应的4个双排插口进行连接实现电气连接。系统软件基于KeilμVision平台,采用C语言编程。软件包括写数据、写命令、IC初始化、γ校正、单色显示和全彩显示等子程序。系统可实现4个2.8"的OLED屏的全彩拼接显示,分辨率为480(RGB)×640,色彩65K,亮度200cd/m2。系统显示接口采用MCU接口-间接控制方式,8080并行8位总线时序。
[Abstract]:In the current information society, the demand for the amount of information display is becoming higher and higher. Splicing display can solve the demand for information display. It mainly includes LCD splicing, LCD splicing, LCD splicing, LCD projection splicing, DLP splicing, etc. At present, many companies have introduced OLED splicing screen, which has the comprehensive advantages of cathode ray tube (CRT) and LCD, and is a fully solid device. It has thin, light, high brightness, and so on. Wide temperature range, fast response speed, wide angle of view, high contrast and low drive voltage and power consumption. OLED is called the third generation display panel display in the 21st century, and it is an upgraded and updated product of LCD. There are few reports of large screen display and small size display screen splicing. The research of OLED splicing display system has wide engineering application prospect, and is based on the need of scientific research. In this paper, the splicing design of small size OLED is studied. Based on ARM7 embedded system chip LPC2138, the OLED screen splicing display system is designed, and four 2.8 "full-color OLED modules are used for splicing. The system is based on two pieces of LPC2138 of ARM7 series as the control core. The timing control signal and image data signal are provided to two OLED drive controllers S6E63D6, respectively, so as to realize the full color display of four OLED screens. The hardware of the system is designed by modularization. OLED module if damaged, only need to replace the subboard by replacing the subboard, OLED module is composed of two parts: OLED splicing motherboard circuit and sub-board circuit. The mainboard circuit is the core circuit of the system, including power supply arm crystal oscillator JTAG, reset circuit and peripheral circuit. The motherboard circuit takes two LPC2138 as the core, and each LPC2138 drives two OLED screens. Four OLED screens with four double rows of sockets are provided. The sub-board circuit includes four spliced interface circuits of four display screens and peripheral circuits, which lead four S6E63D6 interface signals to four double-row sockets, respectively. The system software is based on Keil 渭 Vision platform and is programmed by C language. The software includes writing data, writing command IC initialization, 纬 correction, and so on. The system can realize the full color splicing display of 4 2.8 "OLED screens with a resolution of 480 OLED 脳 640, color 65K, brightness 200cd / m2. The system display interface adopts MCU interface-indirect control mode and 8080 parallel 8-bit bus timing.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN873

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