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LED brightness and chroma consistency adjusting device and method

An adjustment method and an adjustment device technology, which are applied to lighting devices, lamp circuit layout, light sources, etc., to solve the effect of screen flickering

Active Publication Date: 2015-05-06
FORYOU GENERAL ELECTRONICS
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] The invention provides a device and method for adjusting the consistency of LED brightness and chromaticity, which avoids flickering of LED lights and LCD flickering when LEDs are used as backlights, and solves the problem of consistent brightness and chromaticity of LED lights on instrument panels, car audio panels, and displays. The problem

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  • LED brightness and chroma consistency adjusting device and method

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[0029] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings. The accompanying drawings are only for reference and description, and do not constitute a limitation to the protection scope of the present invention.

[0030] Such as figure 1 As shown, the embodiments of the present invention provide an LED brightness and chromaticity consistency adjustment device on the one hand, including a headlight power supply switch 1 for controlling the power supply of the headlight, a dimmer 2, and the dimmer refers to a car dimmer According to the light requirements of the environment, the components for adjusting the light brightness of the instrument panel in the car; the headlight power supply switch 1 is connected to the detection circuit 3, the dimmer 2 is connected to the dimming PWM acquisition circuit 4, and the detection circuit 3, The dimming PWM acquisition circuit 4 is connected to the micro-processing unit ...

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Abstract

The invention provides LED brightness and chroma consistency adjusting device and method. The method comprises a headlight power supply switch and a light regulator; the headlight power supply switch outputs a headlight signal to a detecting circuit; the light regulator is connected with a light regulating PWM acquiring circuit; the detecting circuit and the light regulating PWM acquiring circuit are both connected with a micro-processing unit; the micro-processing unit is connected with a PWM regulating circuit which is connected with an LED unit. The method comprises the steps of detecting, namely, processing PWM_IN signal after detecting that the headlight power supply switch is on; processing PWM_IN, namely, processing the acquired low-frequency PWM_IN signal, and then outputting a high-frequency PWM-CTL signal of which the duty cycle range is the product of the set duty cycle range and the ratio of the actual LED working current to the LED light and color division current; outputting a PWM_OUT signal, namely, outputting the signal PWM_OUT to the LED unit according to the PWM_CTL signal. With the adoption of the device and method, the LCD light flashing and the LCD flashing while the LED is used as the backlight can be avoided, and the problem of consistency of the LED light brightness and chroma of an instrument panel, an automobile audio panel and a display can be solved.

Description

technical field [0001] The invention relates to the technical field of LED brightness and chromaticity adjustment, in particular to an LED brightness and chromaticity consistency adjustment device and method. Background technique [0002] With the development of the automobile industry in the direction of high-end and humanization, LEDs are widely used in automobile equipment to bring users a comfortable visual experience. Automotive LED has developed from the traditional fixed brightness and chromaticity to the use of dimmers to adjust the brightness and chromaticity, which brings better visual experience and safety to users, but there are still the following deficiencies: [0003] 1) When used on an LCD screen for car display with a dimmer, when the light is on, there will be a problem of screen flicker; [0004] 2) When used on car dashboards, car audio and other in-vehicle equipment, it will cause glare due to excessive light, poor brightness and chromaticity consistenc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
Inventor 龙林云张晓龙曾海龙陈永基
Owner FORYOU GENERAL ELECTRONICS
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