公开(公告)号：US20010035853A1

公开(公告)日：2001-11-01

申请号：US09837937

申请日：2001-04-19

Applicant: U.S. PHILIPS CORPORATION

Inventor： Christoph Gerard August Hoelen ,  Gerard Harbers

IPC: G09G003/36

CPC classification number: G09G3/3413 ,  G02F1/133603 ,  G02F1/133609 ,  G02F2201/58 ,  G09G3/3607 ,  G09G2320/0271 ,  G09G2320/0606 ,  G09G2320/0626 ,  G09G2320/0646 ,  G09G2320/066 ,  G09G2320/0666 ,  G09G2360/144 ,  G09G2360/145

Abstract: The system comprises a display device with a pattern of pixels (3) controlled by a control circuit (8) and a backlight system for illuminating the display device, which backlight system comprises a light-emitting panel and a light source (16, 16null, 16null, . . . ) associated with the light-emitting panel. The light source comprises a plurality of light-emitting diodes (LEDs) of at least two different colors. The control circuit (8) also controls the luminous flux of the LEDs. Preferably, the intensity of the light emitted by the LEDs (16, 16null, 16null) varies with the light level of the image to be displayed by the display device. Preferably, the intensity of the light emitted by the backlight system can be controlled on a frame-to-frame basis and, preferably, also for each color. Preferably, the LEDs comprise a plurality of red, green, blue (and amber) LEDs, each, preferably, having a luminous flux of at least 5 lumen. The color point of an image to be displayed on the display screen of the display device is set by the backlight system, enabling an optimum contrast to be obtained for the image to be displayed by the display device.

Abstract translation: 该系统包括具有由控制电路（8）控制的像素（3）图案的显示装置和用于照亮显示装置的背光系统，该背光系统包括发光面板和光源（16,16' ，16“，...），与发光面板相关联。 光源包括至少两种不同颜色的多个发光二极管（LED）。 控制电路（8）还控制LED的光通量。 优选地，由LED（16,16'，16“）发射的光的强度随着要由显示装置显示的图像的光级而变化。 优选地，由背光系统发射的光的强度可以基于帧到帧来控制，并且优选地也可以针对每种颜色进行控制。 优选地，LED包括多个红色，绿色，蓝色（和琥珀色）LED，每个LED优选具有至少5流明的光通量。 在显示装置的显示画面上显示的图像的色点由背光系统设定，能够对由显示装置显示的图像获得最佳的对比度。

公开(公告)号：US20030067786A1

公开(公告)日：2003-04-10

申请号：US10287221

申请日：2002-11-04

Applicant: U.S. PHILIPS CORPORATION

Inventor： Simon H.A. Begemann ,  Gerard Harbers

IPC: B60Q003/04

CPC classification number: F21S41/663 ,  F21S41/143 ,  F21Y2115/10 ,  Y10S362/80

Abstract: A headlamp (2; 3) of a vehicle (1) has a light source (4; 5) comprising a plurality of opto-electronic elements (11; 12; 13; 14), preferably light-emitting diodes (LED's). At least one of these opto-electronic elements (11; 12; 13; 14) has, in operation, a luminous flux of 5 lm or higher. According to the invention, the spectral characteristic of the light beam (6, 6null; 7, 7null) generated by the light source (4; 5) depends upon the position in the light beam (6, 6null; 7, 7null). Preferably, the light source (4; 5) comprises opto-electronic elements (11; 12; 13; 14) only. The light beam comprises at least two light beam segments (6, 6null; 7, 7null) having essentially different spectral characteristics. Preferably, one of the light beam segments (6null; 7null) is mesotopically tuned. In particular, a first light beam segment (6; 7) comprises a considerable amount of white or yellow-orange light, and a second light beam segment (6null; 7null) comprises a considerable amount of blue-green light.

Abstract translation: 车辆（1）的前照灯（2; 3）具有包括多个光电元件（11; 12; 13; 14）的光源（4; 5），优选地是发光二极管（LED）。 这些光电子元件（11; 12; 13; 14）中的至少一个在操作中具有5lm或更高的光通量。 根据本发明，由光源（4; 5）产生的光束（6,6'; 7,7'）的光谱特性取决于光束（6,6'; 7,7'）中的位置 '）。 优选地，光源（4; 5）仅包括光电元件（11; 12; 13; 14）。 光束包括具有基本上不同光谱特性的至少两个光束段（6,6'; 7,7'）。 优选地，光束段（6'; 7'）中的一个被中间调谐。 特别地，第一光束段（6; 7）包括相当大量的白色或黄色 - 橙色光，并且第二光束段（6'; 7'）包括相当数量的蓝绿色光。