Digital signage with local dimming ensures intelligent brightness adjustment of different LED backlight zones behind the LCD panel, based on the specific content being displayed. It helps to avoid prolonged exposure to overly bright or dark images and reduces visual fatigue.

Local Dimming is integrated with digital signage to make the display more delicate, greatly improve the digital display contrast, and reduce energy consumption, bringing additional performance advantages to the LCD digital signage.

Local dimming is a feature that allows LCD digital display to dynamically adjust the backlighting for different areas of the screen. By selectively dimming or turning off specific backlight zones, local dimming achieves deeper blacks and brighter whites, resulting in an enhanced contrast ratio.

2024年4月26日 · Local dimming is a zonal (defined as rectangles, columns or rows) screen backlight adjustment technology that involves dynamically controlling the amount of light in a particular part of the display. Darker portions of the image will be less illuminated and lighter portions will be brightened accordingly, which not only improves contrast, but ...

With Coretronic Group backlight technology, Champ Vision can provide customized LCM structure to make ultra slim LCD display, the thickness of the 55″ LCD display can be under 20mm for single or dual screens. Champ Vision patented optical design can …

Digital or PWM dimming is rapid-ly becoming the dimming technique of choice since it is less display-sen-sitive and offers more flexibility in choosing brightness levels. To make PWM dimming possible, an inverter needs to be specifically de-signed for it.

2019年12月8日 · PWM (Pulse Width Modulation): This varies the duty cycle of the backlight “on time” – it is predominant in modern LCD panel LED backlight designs to enable support for digital brightness controls. Analog: Uses a simple variable voltage to adjust brightness, for example this might be a dial or slider type potentiometer / variable resistor.

2024年11月18日 · The application of Local dimming in digital signage has multiple advantages, as follows: Enhance display effect. Enhance contrast - The contrast ratio of ordinary digital displays or LCD screens is relatively low, and it is usually difficult to present a distinct bright-dark contrast.

PWM controls the duty cycle from 0V to 5V (or 0V to 3.3V) for dimming ratio. Benefits. Dimming range (Duty cycle: 0%~100%) provides the widest brightness control ratio. User-friendly dim-to-black VR knob adjustment for ease of operation. Integration of other display technology such as sunlight readable or anti-glare coating ensures the great ...

This application note shows how to dim the backlight using Pulse Width Modulation controlled through code rather than manually variating voltage levels. 1. Introduction