【摘要】 有源矩阵有机发光二极管（AMOLED）显示技术以其高对比度、快速响应及柔性特性成为新型显示领域的主流技术之一，而像素驱动架构直接决定了显示品质与能耗。本文系统梳理了AMOLED像素驱动电路的技术发展：从早期2T1C架构的简易设计，到流水线补偿架构（如6T1C/7T1C）实现阈值电压(V_th)内部实时补偿；进一步发展为LTPO宽频驱动架构，通过低温多晶硅与氧化物（LTPS&Oxide）混合TFT背板技术，支持1～120 Hz刷新率自适应调节，显著降低显示动态功耗；系统评述了阈值电压一次锁存（OTD）架构，创新性采用“存算一体”设计，实现V_th锁存与数据刷新的分离，将补偿频率降至数据刷新频率的1/N(如N=20，每20帧补偿一次V_th)，高刷新率下动态功耗降低超50%。本文深入剖析了各驱动架构的电路原理、时序控制及功耗模型，并指出高迁移率稀土掺杂氧化物TFT（如Ln-IZO）与OTD架构的融合，将为低成本、低功耗AMOLED显示提供技术新路径。更多还原

【Abstract】 Active-matrix organic light-emitting diode（AMOLED） display technology has become a mainstream solution in next-generation displays due to its high contrast ratio, rapid response, and flexibility. The pixel driving architecture critically determines display quality and energy efficiency. This paper systematically reviews the technical evolution of AMOLED pixel driving circuits: From the early simplified 2T1C architecture to the pipelined compensation architectures（e.g., 6T1C/7T1C） enabling realtime internal compensation of threshold voltage(V_th); Further advancing to LTPO wide-frequency driving architectures, which leverage hybrid low-temperature polycrystalline silicon and oxide（LTPS & Oxide） TFT backplane technology to support adaptive refresh rate adjustment（1～120 Hz）, significantly reducing dynamic power consumption; And innovating with the One-Time Driving（OTD） architecture, which adopts nonvolatile memory and in-memory computing design. This approach decouples V_th latching from data refreshing, reducing the compensation frequency to 1/N of the data refresh rate(e.g., N=20, compensating V_th once per 20 frames), thereby slashing dynamic power consumption by >50% at high refresh rates. The paper thoroughly analyzes circuit principles, timing diagram, and power models of these architectures. It highlights that the integration of high-mobility rare-earth-doped oxide TFTs（e.g., Ln-IZO） with the OTD architecture will pave a new technical path for low-cost, low-power AMOLED displays.更多还原