基于FPGA的TFT液晶显示模组测试系统的设计与实现

发布时间：2019-04-26 06:22

【摘要】：薄膜晶体管液晶显示器(Thin Film Transistor-Liquid Crystal Display: TFT-LCD)已经广泛应用到各个领域,并且逐步进入千家万户。而随着LCD制造业的发展以及LCD设计技术的革新换代,对TFT液晶显示器的测试能力提出了新的要求。多年来LCD测试技术一直被国外所掌握,测试设备主要以外购为主,比如韩国的J600和J1000,高昂的设备经费也成为必然。由此可见,掌握TFT-LCD测试核心技术并开发专业的测试设备的意义尤为重要。本论文主要基于现场可编程门阵列(Field-Programmable Gate Array, FPGA)开发平台进行研究,设计开发新的TFT-LCD测试系统,主要工作包括： (1)在深入研究了TFT-LCD的显示原理和国内外测试设备开发现状的基础上,根据实际的功能需求制定了系统的整体开发方案； (2)搭建了FPGA硬件实现平台,对硬件模块进行了对比选型,并分别实现了电源控制、时钟控制、时序控制以及MIPI桥接等多个功能模块； (3)实现了软件编程,制定多处理器之间的通信协议,配合对数字电源模块、时钟控制模块以及MIPI桥接等功能模块的控制,并通过参数配置的方式实现多种逻辑图片在TFT-LCD上显示,达到了实际需求的画面检测功能； (4)应用设计的TFT液晶显示模组测试系统进行了信号测试,主要对各个功能模块及MIPI信号的实现效果进行了实际评估,验证了本测试系统的实际效果。本论文设计的设备为一种可同时驱动两块模组的驱动方式的国产测试设备,最终实现的测试设备已在某液晶显示器模组制造工厂使用。论文的研究结果表明,随着国内LCD制造业的兴起,包括测试技术的多个核心技术都被国内企业所掌握,并逐渐发展壮大,测试技术作为LCD制造工艺的一项重要技术,已经具备行业内较高的水准,并逐步实现国产化。
[Abstract]:Thin Film Transistor liquid Crystal display (Thin Film Transistor-Liquid Crystal Display: TFT-LCD) has been widely used in various fields, and gradually into thousands of households. With the development of LCD manufacturing industry and the innovation of LCD design technology, the testing ability of TFT liquid crystal display (LCD) is required. For many years, LCD testing technology has been mastered abroad, the main test equipment is mainly purchased from outside, such as J600 and J1000 in South Korea, the high cost of equipment has also become inevitable. It can be seen that it is very important to master the core technology of TFT-LCD testing and develop professional testing equipment. This paper is mainly based on the field programmable gate array (Field-Programmable Gate Array, FPGA) development platform for research, design and development of a new TFT-LCD test system, The main work includes: (1) on the basis of in-depth study of the display principle of TFT-LCD and the status quo of the development of test equipment at home and abroad, the overall development scheme of the system is formulated according to the actual functional requirements; (2) the FPGA hardware implementation platform is built, and the hardware modules are compared and selected, and several functional modules, such as power control, clock control, timing control and MIPI bridging, are realized respectively. (3) the software programming is realized, the communication protocol between multi-processors is made, and the digital power module, clock control module and MIPI bridging module are controlled. And through the configuration of parameters to achieve a variety of logical pictures on the TFT-LCD display, to achieve the actual needs of the screen detection function; (4) the test system of TFT liquid crystal display module is used to test the signal, and the realization effect of each function module and MIPI signal is evaluated, and the actual effect of the test system is verified. The equipment designed in this paper is a kind of domestic test equipment which can drive two modules at the same time. Finally, the test equipment has been used in a liquid crystal display module manufacturing factory. The research results show that, with the rise of domestic LCD manufacturing industry, many core technologies, including test technology, are mastered by domestic enterprises and gradually developed. As an important technology of LCD manufacturing process, test technology is one of the most important technologies. Has already had the industry within the higher level, and gradually realized localization.
【学位授予单位】：中国科学院大学（工程管理与信息技术学院）
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN791;TN873.93

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