基于汽车仪表的5寸单色反显TFT液晶屏驱动功能实现  

Realization of 5-inch Monochrome Reverse Display TFT LCD Drive Function of Automobile Instrument

作　　者：陆敬泉 LU Jing-quan(Dongfeng Electric Drive System Co.,Ltd,Xiangyang 441001,China)

机构地区：[1]东风电驱动系统有限公司,襄阳441001

出　　处：《汽车科技》2022年第5期80-87,57,共9页Auto Sci-Tech

摘　　要：构建了汽车组合仪表的5寸单色TFT反显屏软、硬件驱动方案,重点设计了该液晶屏的显示驱动、数据压缩等实现算法,通过详细设计、计算分析与实验验证,该方案能够可靠的驱动液晶屏显示,通过优化系统软件和显示策略,保证了在不更换更高主频性能的MCU前提下,驱动更高显示分辨率的液晶屏(320*240)。同时由于相同构型和分辨率下的反显屏在采购成本上明显低于正显屏,因此使用反显液晶屏模组能充分满足单色液晶仪表的降成本要求,满足客户对液晶显示的更高性能需求。该设计具有可靠性高、易实现、低成本、可移植的特点,该设计的应用在某种程度上使公司在组合仪表的单色TFT液晶显示方案上实现了突破,从而提高公司的产能和产品质量。在取代竞争对手为公司创造良好经济效益的同时。该驱动方法可推广移植应用于其他汽车组合仪表设计上,实现该技术的持续增盈。The software and hardware driving scheme of the 5-inch monochrome TFT with reverse display screen of the Automobile combination instrument is constructed,focusing on designing the display driving,data compression and other implementation algorithms of the LCD drive.Through detailed design,calculation analysis and experimental verification,the solution can drive the LCD reliably.By optimizing the system software and display strategy,it is guaranteed to drive the LCD with higher display resolution(320*240)without replacing the MCUs which need higher frequency performance.At the same time,since the purchase cost of the reverse display LCD with the same configuration and resolution is significantly lower than that of the positive display LCD,the use of the reverse display LCD module can fully make the cost reduction and the higher performance requirements for the customers.The design has the characteristics of high reliability,easy implementation,low cost and portability.The application of this design has enabled the company to achieve a breakthrough in the monochrome TFT LCD scheme of the instrument cluster to some extent,thereby improving the company's production capacity and product quality.While replacing competitors to create good economic benefits for the company,this driving method can be popularized and transplanted to other vehicle combination instrument designs,and realize the continuous increase of the technology.

关 键 词：汽车仪表 反显 TFT_LCD 

分 类 号：U463.7[机械工程—车辆工程]