18642765. SYSTEMS AND METHODS FOR TWO-DIMENSIONAL BACKLIGHT OPERATION simplified abstract (Apple Inc.)
Contents
SYSTEMS AND METHODS FOR TWO-DIMENSIONAL BACKLIGHT OPERATION
Organization Name
Inventor(s)
Mahesh B. Chappalli of San Jose CA (US)
Assaf Menachem of Hod Hasharon (IL)
Daniel Yechiel Dar of Givatayim (IL)
Ido Yaacov Soffair of Tel-Aviv (IL)
SYSTEMS AND METHODS FOR TWO-DIMENSIONAL BACKLIGHT OPERATION - A simplified explanation of the abstract
This abstract first appeared for US patent application 18642765 titled 'SYSTEMS AND METHODS FOR TWO-DIMENSIONAL BACKLIGHT OPERATION
The abstract describes an electronic display device that adjusts the brightness of an LED backlight based on target brightness, current brightness, and temperature. It also manages power consumption, voltage supply, interrupts, and compensates for aging and temperature changes in the LEDs.
- The device gradually changes the brightness of the LED based on target brightness, current brightness, and temperature.
- It limits power to the backlight by estimating power consumption of current and other rows of LEDs.
- The device adjusts the voltage supplied to an LED based on the current required for operation.
- It sends interrupts to the backlight to prevent updates while writing image content to the panel.
- The device compensates for aging and temperature effects on the LEDs.
Potential Applications: - Electronic displays in various devices such as smartphones, tablets, laptops, and TVs. - Automotive displays for instrument clusters, infotainment systems, and head-up displays.
Problems Solved: - Efficient management of LED backlight brightness and power consumption. - Enhanced display quality and longevity by compensating for aging and temperature effects.
Benefits: - Improved energy efficiency and longer lifespan of LED backlights. - Enhanced visual experience with optimized brightness levels. - Consistent display performance under varying conditions.
Commercial Applications: Title: "Smart LED Backlight Control System for Enhanced Display Performance" This technology can be used in consumer electronics, automotive displays, medical devices, and industrial equipment to improve display quality, energy efficiency, and longevity.
Questions about LED Backlight Control Systems: 1. How does the device adjust the brightness of the LED backlight based on temperature changes? The device adjusts the brightness by considering the target brightness, current brightness, and temperature at the LED. 2. What are the potential benefits of using this technology in automotive displays? Using this technology can improve display quality, energy efficiency, and longevity in automotive displays.
Original Abstract Submitted
An electronic display device has a panel that operates in conjunction with a light-emitting diode (LED) backlight. The device “slopes” or gradually ramps a change in brightness of an LED based on a target brightness value of the LED, a current brightness value of the LED, and temperature at the LED. The device also may limit power to the backlight based on an estimated power consumption of a current row of LEDs of the backlight and power consumption of the other rows of LEDs. The device also may determine a reduced voltage to supply to an LED based on a current to supply to the LED to cause the LED to operate. The device also may send an interrupt to the backlight to block updates to the backlight while image content is written to pixels of the panel. The device further compensates for aging of and temperature at an LED.
