Display Device Lighting Mode via Shared Backlight Driver
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Solution Overview
Problem
Conventional display devices become aesthetically unpleasing and unutilized when not in use, as they revert to a black, noticeable object in the home, lacking functionality beyond their primary display purpose.
Innovation Solution
A display device and control method that enables the device to operate as a lighting unit when turned off, utilizing a light emitting frame, a backlight driver, and a processor to manage power distribution between the display panel and light emitting frame, allowing the device to function as a lighting source while reducing production costs by eliminating the need for a separate backlight driver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate backlight driver is added to enable lighting function, then the lighting capability is improved, but the device complexity and production cost increase
Solution Approach 1:
The existing backlight driver is designed to perform dual functions: driving the backlight unit during display operation and driving the light emitting frame when display is turned off. This eliminates the need for a separate lighting driver, reducing device complexity while maintaining lighting capability.
Solution Approach 2:
The patent combines the backlight driver and lighting driver into a single integrated backlight driver unit. The driver receives control signals from the processor and dynamically switches between driving the backlight unit and the light emitting frame, merging two separate functions into one component.
2Illumination intensity
If power is continuously supplied to both backlight unit and light emitting frame, then the lighting performance is improved, but the energy consumption increases
Solution Approach 1:
The system uses periodic switching between display mode and lighting mode based on processor control. When the display is turned off, power is redirected from the backlight unit to the light emitting frame, creating a periodic alternation that ensures lighting function is available when needed while avoiding continuous simultaneous operation.
Solution Approach 2:
The backlight driver dynamically adjusts its output based on real-time control signals from the processor. The driver can switch between driving the backlight unit and the light emitting frame, and can also adjust brightness levels through PWM dimming signals, enabling adaptive power management that optimizes energy consumption based on actual usage conditions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances usability by converting the display device into a functional lighting unit when not in use, reducing production costs through shared power management and eliminating the need for a dedicated backlight driver.
Implementation Method 1
a light emitting frame including a plurality of light emitting elements
Data Source
AI summary
A display device and controlling method are provided. The display device includes a display including a display panel and a backlight unit arranged on the rear surface of the display panel, a light emitting frame including a plurality of light emitting elements, the light emitting frame being arranged on at least one edge of the display, a backlight driver, and a processor configured to control the backlight driver so as to supply power to the backlight unit based on an event for turning on the display occurring, and supply power to the light emitting frame based on an event for turning off the display occurring.