Three-primary-color light bar dimming control system and television
A dimming control and three-primary color technology, which is applied in color TV, color TV parts, color signal processing circuit, etc., can solve the problems of inability to realize different image quality display requirements, low color gamut, etc., and achieve high color gamut The effect of high-quality display and high-quality display screen requirements
Pending Publication Date: 2021-08-13
GUANGDONG CHANGHONG ELECTRONICS
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Problems solved by technology
[0003] With the improvement of living standards, people require higher and higher color reproduction of TV screens, and the market demand for high-color gamut TVs is strong. The lighting control system of existing TVs uses a control chip to uniformly control the LED lights of three basic colors. Color display, the color gamut is low and the display screen requirements of different image quality cannot be realized
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[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0030] In the description of the present invention, unless otherwise clearly defined, words such as setting, installation, and connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.
[0031] refer to figure 1 , a dimming control system for a three-primary-color light bar, comprising:
[0032] Power module 100 , first LED driver module 200 , second LED drive...
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The invention discloses a three-primary-color light bar dimming control system and a television, the three-primary-color light bar dimming control system comprises: a power supply module, a first LED driving module, a second LED driving module and a third LED driving module, wherein the output end of the power supply module is connected with the input ends of the first LED driving module, the second LED driving module and the third LED driving module; a red light LED, a green light LED and a blue light LED, wherein the output end of the first LED driving module is connected with the red light LED, the output end of the second LED driving module is connected with the green light LED, and the output end of the third LED driving module is connected with the blue light LED; and an MCU which is respectively connected with the control ends of the first LED driving module, the second LED driving module and the third LED driving module. The light-emitting states of the LEDs with different colors can be controlled by sending the PWM signals with different frequency duty ratios, and the requirements for display of a higher color gamut and display pictures with different picture qualities can be met.
Description
technical field [0001] The invention relates to the field of dimming control, in particular to a dimming control system for a three-primary-color light bar and a television. Background technique [0002] Existing color TVs use three primary color light strips for color display. The three primary colors refer to the "basic colors" that cannot be obtained by mixing other colors. Because the human naked eye has cone cells that perceive three different colors of RGB, Therefore, the color space can usually be expressed by three basic colors of RGB, and the three primary colors are R (Red) red, G (Green) green and B (Blue) blue. [0003] With the improvement of living standards, people require higher and higher color reproduction of TV screens, and the market demand for high-color gamut TVs is strong. The lighting control system of existing TVs uses a control chip to uniformly control the LED lights of three basic colors. Color display, the color gamut is low and the display scre...
Claims
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IPC IPC(8): H04N9/64H04N9/68H04N9/31
CPCH04N9/643H04N9/68H04N9/3117
Inventor 罗国威蒋吉强梁平茂刘应兵杨宣华李荷花
Owner GUANGDONG CHANGHONG ELECTRONICS