提出了一种可用于硅基OLED驱动芯片的温度反馈PWM调节电路。该电路能够根据温度变化自动对OLED阵列上的共阴极电压进行PWM调制，从而实现温度变化时，保持OLED微显示器屏幕亮度和灰阶特性不变。电路采用0.18 μm 1P6M混合信号工艺完成了电路设计和流片验证，仿真和测试结果表明，当温度从-25 ℃变化至70 ℃时，屏幕亮度与灰阶特征保持不变。研究解决了OLED微显示器屏幕亮度随温度变化，传统共阴极电压调节方案会改变OLED的灰阶特性的问题。

A temperature feedback PWM adjustment circuit has been proposed. The circuit could automatically pulse width modulate the common cathode voltage according to temperature changes， so as to maintain the brightness and gray-scale characteristics of the OLED screen with the temperature changing. The circuit used 0.18 μm 1P6M mixed-signal technology to complete the circuit design and tape-out verification. Simulation and test results showed that when the temperature changed from -45 °C to 70 °C， the screen brightness and grayscale characteristics remained unchanged. In the end， the problem about the brightness of the OLED screen changing with temperature， and the traditional solution changing the gray-scale characteristics were solved.