Energy Efficient Control of LED Backlight TV Display and Ambient Light
The goal of the project is to develop and demonstrate energy efficient control of LED backlight for TV displays. The novel approach is based on energy aware optimization. It will be demonstrated for LED backlight for two different HDTV architectures. The technique shall also include measurements for ambient light for optimal energy efficiency.
Bang & Olufsen and DTU Fotonik will develop and demonstrate energy efficient advanced control of TV displays with LED backlight. This includes the utilization of measurements of the ambient light at the time of viewing the TV.
The goal is simultaneous reduction of energy consumption and image quality improvement in typical TV viewing in a living room. The high image quality shall contribute to the success of the energy efficient display.
The project will develop and demonstrate energy efficient TV platforms with local dimming of LED backlight. These will include an ambient light sensor. Demonstration and testing will be performed in an environment with controlled ambient light to demonstrate the light aware control and energy efficient solution.
The result of the project will include demonstration of energy efficient control of LED backlight LCD display for two different architectures including measurements of ambient light. The LED backlight TV is dominating the market and the backlight accounts for most of the energy consumption Thus efficient solution to control the LEDs provide significant potentials for saving energy in households worldwide. The energy goals of the project include providing energy optimal, high quality LED backlight display control.
The goal of the project was to develop and demonstrate energy efficient control of LED backlight
for TV displays. The novel approach is based on energy aware optimization. The project
worked with and demonstrated LED backlight control for two different backlight architectures
and for HDTV and UHD. The technique also included as an important input measurement of
ambient light for optimal energy efficiency. For high quality TV material relative image dependent
energy saving of 30% for the display was achieved. Taking the ambient light into
account energy saving of up to seven times was demonstrated. It was shown that including
the ambient light plays a crucially important role in energy efficient backlight control with
Key figures
Category
Dokumenter
Participants
| Partner | Subsidy | Auto financing |
|---|---|---|
| Danmarks Tekniske Universitet (DTU) | 1,50 mio. DKK | 0,47 mio. DKK |
| BANG & OLUFSEN A/S | 0,40 mio. DKK | 1,20 mio. DKK |