Light Bar Assembly with Segmented Circuits for Fill Light
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing mobile phone camera systems face complexity in structure due to separate settings for fill lights and backlights, leading to luminance loss and potential backlight damage when displaying white screens for selfies.
Innovation Solution
A light bar assembly with a printed circuit board connecting backlights and fill lights, where each emits light in different directions, allowing for separate circuit control to optimize luminance and reduce structural complexity, using a switching component to manage power between the circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display screen is controlled to display white for fill light, then the fill light function is achieved, but there is great luminance loss and the backlight life is reduced
Solution Approach 1:
The patent segments the lighting function into two independent parts: the backlight for display illumination and the fill light for selfie illumination. By providing separate light sources (backlight LEDs and fill light LEDs) and separate driving circuits, the system can activate only the fill light when needed for selfies, avoiding the luminance loss and energy waste associated with using the display backlight for fill light purposes.
2Illumination intensity
If separate settings are provided for fill light and backlight, then the fill light function is achieved, but the product structure becomes complicated
Solution Approach 1:
The patent merges the fill light and backlight into a single integrated light bar assembly structure. Both the fill light LEDs and backlight LEDs are mounted on the same light bar printed circuit board, sharing common structural support and housing. This integration reduces the number of separate components and simplifies the overall product structure while maintaining independent electrical control through separate driving circuits.
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
This design simplifies the product structure, enhances fill light luminance for selfies without damaging the backlight, and prolongs the life of the backlight by isolating the fill light's power usage.
Implementation Method 1
a plurality of backlights electrically connected to the light bar printed circuit board; and at least one fill light electrically connected to the light bar printed circuit board wherein the light bar printed circuit board includes a first circuit and a second circuit connected to a drive circuit, the first circuit is configured to provide an electrical signal to the backlights, and the second circuit is configured to provide an electrical signal to the fill light
Data Source
AI summary
The present disclosure provides a light bar assembly, a backlight unit, a display unit and a mobile electronic device. The light bar assembly includes: a light bar printed circuit board; a plurality of backlights electrically connected to the light bar printed circuit board; and at least one till light electrically connected to the light bar printed circuit hoard. The light bar printed circuit board includes a first circuit and a second circuit connected to a drive circuit, the first circuit is configured to provide an electrical signal to the backlights, and the second circuit is configured to provide an electrical signal to the fill light.