介绍了一种应用于AM-OLED显示屏的MDDI数据处理芯片。在移动显示领域,MDDI(Mobile Dis-play Digital Interface)因数据连接线少、功耗低、信号传输可靠性高、可有效降低噪声、降低硬件复杂度而得到越来越广泛的应用。所设计的芯片用于24...介绍了一种应用于AM-OLED显示屏的MDDI数据处理芯片。在移动显示领域,MDDI(Mobile Dis-play Digital Interface)因数据连接线少、功耗低、信号传输可靠性高、可有效降低噪声、降低硬件复杂度而得到越来越广泛的应用。所设计的芯片用于240RGB×320的AM-OLED显示屏,支持RGB模式和26万色分辨率。控制显示器的屏幕刷新频率为40～60Hz。可完全支持MDDI协议。由于输入数据量较大而MDDI为串行接口,芯片的数字输入频率最高可达100 MHz。设计中综合考虑了芯片面积、速率与功耗等方面的限制。经过FPGA验证,该显示电路性能完全满足设计指标要求。展开更多
The paper puts forward a method on controlling the AM-OLED panel to display image with high gray scale levels. It also gives an ASIC design sample to implement this method. A twenty sub-fields scan scheme has been tak...The paper puts forward a method on controlling the AM-OLED panel to display image with high gray scale levels. It also gives an ASIC design sample to implement this method. A twenty sub-fields scan scheme has been taken into use in the chip to display 256 gray scale levels on a QVGA resolution AM-OLED display screen. The functions of image scaling and rotating have also been implemented for multiply application. The simulation and chip test result show that the chip design has met the design requirements.展开更多
For LTPS AM-OLED displays,the spatial variation in the electrical characteristics of polysilicon TFTs will cause non-uniform pixel brightness and poor grayscale accuracy.The technological solution for this problem wil...For LTPS AM-OLED displays,the spatial variation in the electrical characteristics of polysilicon TFTs will cause non-uniform pixel brightness and poor grayscale accuracy.The technological solution for this problem will open up the larger size application of LTPS AM-OLED displays.In this paper,a digital driver employing a FPGA device is designed to serve 2-inch color LTPS AM-OLED displays with 128×(160×3) resolution.A digital method of simultaneous address-display (SAD) and the digital visual interface (DVI) are introduced in the driving scheme.100% display per.ratio can be obtained.Moving image with 16 grayscales is realized and has good image uniformity.展开更多
文摘介绍了一种应用于AM-OLED显示屏的MDDI数据处理芯片。在移动显示领域,MDDI(Mobile Dis-play Digital Interface)因数据连接线少、功耗低、信号传输可靠性高、可有效降低噪声、降低硬件复杂度而得到越来越广泛的应用。所设计的芯片用于240RGB×320的AM-OLED显示屏,支持RGB模式和26万色分辨率。控制显示器的屏幕刷新频率为40～60Hz。可完全支持MDDI协议。由于输入数据量较大而MDDI为串行接口,芯片的数字输入频率最高可达100 MHz。设计中综合考虑了芯片面积、速率与功耗等方面的限制。经过FPGA验证,该显示电路性能完全满足设计指标要求。
基金Project supported by the Science and Technology Commission of Shanghai Municipality(Grant No.09530708600)the Shanghai AM Foundation(Grant No.09700714000)
文摘The paper puts forward a method on controlling the AM-OLED panel to display image with high gray scale levels. It also gives an ASIC design sample to implement this method. A twenty sub-fields scan scheme has been taken into use in the chip to display 256 gray scale levels on a QVGA resolution AM-OLED display screen. The functions of image scaling and rotating have also been implemented for multiply application. The simulation and chip test result show that the chip design has met the design requirements.
文摘For LTPS AM-OLED displays,the spatial variation in the electrical characteristics of polysilicon TFTs will cause non-uniform pixel brightness and poor grayscale accuracy.The technological solution for this problem will open up the larger size application of LTPS AM-OLED displays.In this paper,a digital driver employing a FPGA device is designed to serve 2-inch color LTPS AM-OLED displays with 128×(160×3) resolution.A digital method of simultaneous address-display (SAD) and the digital visual interface (DVI) are introduced in the driving scheme.100% display per.ratio can be obtained.Moving image with 16 grayscales is realized and has good image uniformity.
