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Three-primary-color LED control driving method

A driving method and a three-primary color technology, applied in the field of LED lighting systems, can solve problems such as reducing serial transmission frequency, and achieve the effect of solving power balance problems

Active Publication Date: 2016-11-23
上海艺霆灯具制造启东有限公司
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Problems solved by technology

In this way, in a cycle of repeated lighting, each pixel only needs 4 pulses at 16-level grayscale, and only 8 pulses at 256-level grayscale, which greatly reduces the serial transmission frequency

Method used

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  • Three-primary-color LED control driving method

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Embodiment Construction

[0014] A three-color LED control driving method, the three-color LED display image, the image is divided into several frames, it is characterized in that each frame of image is divided into several primary color units in time, according to the color of the frame image The ratio of the three colors, calculate the number of primary color units occupied by each color LED in the three-color LEDs, and light up the LEDs of this color for a corresponding time unit, so that only one color LED light is lit in the same primary color unit .

[0015] According to a specific embodiment of the present invention, the number of primary color units is 256 primary color units, that is, each frame of image is divided into 256 primary color units in time, if a certain color can be composed of 56 parts of green, 100 parts of blue and 100 parts In the time frame of each frame of image, the green LED lights up 56 primary color units, the blue LED lights up 100 primary color units, and the red LED li...

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Abstract

The invention discloses a method for controlling and driving a three-primary-color LED. The three-color LED displays an image, and the image is composed of a plurality of frame images, which is characterized in that each frame of image is divided into several primary-color units in time, according to the The proportion of the three colors in the color of the frame image, calculate the number of primary color units occupied by each color LED in the three-color LEDs, and light up the corresponding primary color unit with the LED of this color, so that there is only one primary color unit in the same primary color unit Color LED lights up. In the present invention, in order to maintain the balance of electro-optical colors during color matching, brightness, color saturation and hue can be configured and controlled by using the three-color LED control driving method.

Description

technical field [0001] The invention relates to the technical field of LED lighting systems, in particular to a method for controlling and driving LEDs with three primary colors. Background technique [0002] The luminous color and luminous efficiency of LED are related to the material and process of making LED. At present, red, green and blue are widely used. Due to the low working voltage of the LED (only 1.5-3V), it can actively emit light with a certain brightness, and the brightness can be adjusted by voltage (or current), and it is shock-resistant, vibration-resistant, and has a long life (100,000 hours). Among the display devices, there is currently no other display method that rivals the LED display method. A display made by putting red and green LEDs together as a pixel is called a two-color screen or a color screen; a display made by putting red, green, and blue LED tubes together as a pixel is called a three-color screen or a full screen. color screen. The pixe...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32
Inventor 蒋克勤
Owner 上海艺霆灯具制造启东有限公司
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