14、艾迈斯欧司朗-《汽车内饰氛围灯的发展趋势与解决方案》.pdf

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1、1Sensing is lifeAM interior Ambient RGB Trend And SolutionRaymond Zhong/AM SSE12/7/20232Agenda1.RGB color mixing concept and LED characteristics2.Intelligent RGB LED solution3RGB color mixing concept 1.A set of primary colors,define a color triangle;only colors within this triangle(color Gamut)can b

2、e reproduced by mixing the primary colors.2.The color of mixed light depends on the respective brightness proportion of Reds,Greens,and Blues.3.The Brightness of mixed light is the total brightness of Reds,Greens and Blues.PrimarycolorCxCyBrightness mlm or mcdDuty CycleRedx1y1Y1D1Greenx2y2Y2D2Bluex3

3、y3Y3D3MixedcolorCxCyBrightness mlm or mcdAnyxmymYm=1111+2222+3333111+222+333=1111+2222+3333111+222+333=11+22+334LED CharacteristicsForward Current Dependency of l ldom True GreenBlue5LED CharacteristicsTemperature Dependency of l ldomRedTrue GreenBlue6LED CharacteristicsBrightness Degradation with T

4、emperatureRedTrue GreenBlue9LED CharacteristicsBin groups and Color GamutColor and brightness bin groupsColor GamutLargest common color gamut for all bin combinations10Normal RGB LED solutionsColor stability requirements result in the following driving schemes Temperature compensation is necessary U

5、se PWM for adjusting color and brightness(eliminate forward current dependencies)Module calibration is necessary To compensate for differences within the same bin To compensate between different bins(largest common color gamut for all bin combinations)Light Control ModuleLED DriverRGB ModuleLED Driv

6、erRGB ModuleLED DriverRGB ModuleLIN BUSColor,brightness,Sequences11Agenda1.RGB color mixing concept and LED characteristics2.Intelligent RGB LED solution12Moving to full RGB solutionsExtension of RGB LED portfolio Backlighting of different materialsHigh bright-ness of one single LEDor high amount of