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1. 发明申请

US20060164377A1 Light emitting diode driving apparatus with high power and wide dimming range 有权
标题翻译：发光二极管驱动装置，功率大，调光范围宽
公开(公告)号：US20060164377A1
公开(公告)日：2006-07-27
申请号：US11043226
申请日：2005-01-25
申请人： Mark Struebel , Eric Ronning , Dennis Davey
发明人： Mark Struebel , Eric Ronning , Dennis Davey
IPC分类号： G09G3/36
CPC分类号： H05B33/0815 , G09G3/3406 , G09G2320/0633 , G09G2360/144 , H05B33/0851 , Y02B20/346
摘要： Apparatus are provided for driving an LED light source and controlling a light output of the light source over a wide luminance range in response to a luminance input. The apparatus includes: a voltage source having an output configured to couple with the light source, a first input configured to receive the luminance input, and a second input; a photodetector unit configured to logarithmically compress the luminance range and determine a voltage based on a luminance of the light source in the compressed range; a comparator having an input coupled to the photodetector unit and having an output; and, a signal converter having an input coupled to the output of the comparator and having an output coupled to the second input of the voltage source. The voltage source is configured to generate an output signal at the output of the voltage source. The output signal has a frequency and a pulse width based on the luminance input. The comparator is configured to determine an error signal based on a comparison of the luminance input with the voltage. The converter is configured to exponentially convert the error signal to the frequency.
摘要翻译：提供了用于驱动LED光源并且响应于亮度输入在宽的亮度范围内控制光源的光输出的装置。该装置包括：具有配置成与光源耦合的输出的电压源，被配置为接收亮度输入的第一输入和第二输入; 光电检测器单元，被配置为对数压缩所述亮度范围，并且基于所述光源在所述压缩范围内的亮度来确定电压; 比较器，其具有耦合到所述光电检测器单元并具有输出的输入; 以及信号转换器，其具有耦合到所述比较器的输出并具有耦合到所述电压源的所述第二输入的输出的输入。电压源被配置为在电压源的输出处产生输出信号。输出信号具有基于亮度输入的频率和脉冲宽度。比较器被配置为基于亮度输入与电压的比较来确定误差信号。转换器被配置为将误差信号指数地转换为频率。

2. 发明申请

US20050259439A1 Chroma compensated backlit display 有权
标题翻译：色度补偿背光显示
公开(公告)号：US20050259439A1
公开(公告)日：2005-11-24
申请号：US10853484
申请日：2004-05-24
申请人： Brian Cull , Dennis Davey , Eric Ronning
发明人： Brian Cull , Dennis Davey , Eric Ronning
IPC分类号： G09G3/34 , H05B33/08 , G01D11/28
CPC分类号： G09G3/3413 , G02F1/133603 , G02F1/133606 , G09G2320/043 , G09G2320/0606 , G09G2320/0626 , G09G2320/0666
摘要： Methods and apparatus are provided for a backlit display with variable luminance and chrominance. The apparatus comprises i groups of LEDs of different colors and one or more sensors optically coupled to the LEDs. The combined light produced by the LEDs is directed to a transmissive liquid crystal display, preferably through a diffusing layer. The sensors monitor the output Si of each group of LEDs. Si for each group of LEDs is multiplied by a chrominance determining parameter Ki to obtain Ki*Si which is then compared to a commanded luminance signal LC to obtain LC−Ki*Si, which difference is used to adjust the drive current to each group of LEDs to achieve LC with the desired chrominance set by Ki. By changing Ki and LC the chrominance and luminescence of the display may be varied and aging effects compensated.
摘要翻译：为具有可变亮度和色度的背光显示器提供了方法和装置。该装置包括i组不同颜色的LED和一个或多个光学耦合到LED的传感器。由LED产生的组合光优选通过漫射层指向透射型液晶显示器。传感器监测每组LED的输出S SUB。对于每组LED来说，对于色度确定参数K i i来，将S i＆lt; i＆gt; i＆lt; i＆gt; i＆lt; i＆lt; i＆lt; i＆lt; >，然后将其与命令亮度信号L C C进行比较以获得L C i + ，该差异用于调整到每组LED的驱动电流以实现具有由K i i i设置的期望色度的L C C。通过改变显示器的色度和发光，可以改变K＆lt; i＆gt;和L＆gt; C＆lt; C＆gt;＆gt;可以补偿老化效应。

3. 发明申请

US20070139957A1 LED backlight system for LCD displays 审中-公开
标题翻译： LED背光系统用于LCD显示屏
公开(公告)号：US20070139957A1
公开(公告)日：2007-06-21
申请号：US11317086
申请日：2005-12-21
申请人： Victoria Haim , Elias Haim , Brian Cull , Dennis Davey , Karen Myers
发明人： Victoria Haim , Elias Haim , Brian Cull , Dennis Davey , Karen Myers
IPC分类号： F21V7/04
CPC分类号： G02B6/0068 , G02F1/133603 , G02F1/133609 , G02F1/133615 , G02F1/133621
摘要： A LCD display comprises an LCD panel coupled to a backlight system. The backlight system comprises a direct view backlight comprising a first plurality of LEDs configured to emit white illumination that, at least in part, provides the required luminosity for the LCD panel. The backlight system further comprises an edge view backlight comprising a second plurality of LEDs configured to emit colored illumination that, at least in part, provides the required chromaticity for the LCD panel.
摘要翻译： LCD显示器包括耦合到背光系统的LCD面板。背光系统包括直接观察背光，其包括被配置为发射白光的第一多个LED，其至少部分地为LCD面板提供所需的亮度。背光系统还包括边缘视图背光，其包括被配置为发射彩色照明的第二多个LED，其至少部分地为LCD面板提供所需的色度。

4. 发明申请

US20110096098A1 LOW LUMINANCE READABILITY IMPROVEMENT SYSTEM AND METHOD FOR LIQUID CRYSTAL DISPLAYS 审中-公开
标题翻译：低液晶可读性改进系统和液晶显示方法
公开(公告)号：US20110096098A1
公开(公告)日：2011-04-28
申请号：US12605942
申请日：2009-10-26
申请人： Victoria Haim , Elias S. Haim , Brent D. Larson , Dennis Davey
发明人： Victoria Haim , Elias S. Haim , Brent D. Larson , Dennis Davey
IPC分类号： G09G5/10
CPC分类号： G09G3/36 , G09G2320/062 , G09G2320/0626 , G09G2320/0666 , G09G2360/144
摘要： A display system and method is provided to increase the ability to recognize and distinguish red, magenta, and various other colors rendered on a display device by dynamically compensating for, at least in part, changes in the human vision system when the display luminance is within the mesopic range. The dynamic compensation enables the display system to be optimized differently depending upon the visual luminance range, be it photopic, mesopic, or scotopic.
摘要翻译：提供了一种显示系统和方法，以通过在显示亮度在内部时至少部分地对人类视觉系统的变化进行动态补偿，来提高识别和区分在显示设备上呈现的红色，品红色和各种其他颜色的能力中间范围。动态补偿使得显示系统可以根据视觉亮度范围进行不同的优化，无论是明视，中等还是深色。

5. 发明申请

US20070274093A1 LED backlight system for LCD displays 审中-公开
标题翻译： LED背光系统用于LCD显示屏
公开(公告)号：US20070274093A1
公开(公告)日：2007-11-29
申请号：US11440487
申请日：2006-05-25
申请人： Victoria Haim , Elias Haim , Brent Larson , Dennis Davey
发明人： Victoria Haim , Elias Haim , Brent Larson , Dennis Davey
IPC分类号： F21V7/04
CPC分类号： G02B6/0068 , G02B6/0028 , G02B6/0031 , G02F1/133603 , G02F1/133609
摘要： A LCD display comprises a backlight assembly that includes a backlight substrate, one or more first white LEDs coupled to the backlight substrate and configured to produce a first light output, and one or more second white LEDs coupled to the backlight substrate and configured to produce a second light output. A light integration unit is coupled to the backlight assembly and configured to produce a combined output from the first light output and the second light output, the combined output having a desired luminance and chrominance. A LCD assembly is coupled to the light integration unit.
摘要翻译： LCD显示器包括背光组件，其包括背光源基板，耦合到所述背光源基板并被配置为产生第一光输出的一个或多个第一白色LED以及耦合到所述背光源基板的一个或多个第二白色LED并且被配置为产生第二光输出。光集成单元耦合到背光组件并且被配置为产生来自第一光输出和第二光输出的组合输出，组合输出具有期望的亮度和色度。 LCD组件耦合到光集成单元。

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