LED Substrate Notch Integration for Compact Backlight Units
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing backlight units in electronic display devices require larger bezels due to the substrate's increased height or width from pins and sockets, which accommodates power connectors, leading to a larger form factor.
Innovation Solution
The configuration of the LED substrate with a power connector that does not significantly increase the width or height, allowing for a smaller bezel by using a notch in the light guide plate to house the power connector and a supplemental LED to offset any dark spots, ensuring even light distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power connector is mounted on the LED substrate with pins and sockets, then the power connection is achieved, but the substrate height or width increases requiring larger bezel
Solution Approach 1:
The power connector is repositioned from the traditional substrate mounting location to the light guide plate structure. Specifically, the light guide plate includes a recess or notch that accommodates the power connector, allowing it to be integrated into the side view of the display device rather than extending the substrate dimensions. This dimensional relocation resolves the contradiction by achieving power connection without increasing substrate size.
Solution Approach 2:
The power connector is nested within the light guide plate structure. The light guide plate is configured with an integrated housing or recess that contains the power connector components (pins and sockets), effectively nesting the connector within the existing optical structure. This eliminates the need for additional substrate extension while maintaining reliable power connection.
2Reliability
If the power connector is integrated into the substrate, then power supply is achieved, but the form factor increases
Solution Approach 1:
The power connector functionality is merged with the light guide plate structure. Instead of being separate components requiring additional substrate area, the power connector is integrated into the light guide plate's physical structure through recesses or notches. This merging of functions achieves power supply reliability without increasing the overall display device form factor or bezel area.
3Length of stationary object
If the substrate size is reduced to minimize bezel, then the form factor is compact, but it becomes difficult to accommodate power connector components
Solution Approach 1:
The light guide plate serves as an intermediary structure that accommodates the power connector components. Rather than directly mounting pins and sockets on the reduced substrate, the light guide plate provides an intermediate housing or recess structure that contains the power connector assembly. This intermediary approach enables compact substrate dimensions while maintaining ease of manufacture for power connector integration.
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
Enables a more compact display device design with improved light distribution and reduced bezel size without compromising the light emission, addressing the challenge of accommodating power connectors within the existing form factor.
Implementation Method 1
The light guide plate is configured to redirect light incoming from its side(s) through its front towards the LCD panel
Implementation Method 2
The light emitting diode substrate includes a plurality of LEDs that are configured to supply light to a side of the light guide plate
Data Source
AI summary
A display device includes a liquid crystal display (LCD) panel, a rear frame, a light guide plate, and a light emitting diode (LED) substrate. The LED substrate includes a first substrate portion, a second substrate portion, a plurality of LEDs mounted to the first substrate portion, and a power connector mounted to the second substrate portion. The first substrate portion extends in a first direction along a first side of the light guide plate that faces the first sidewall of the rear frame. The second substrate portion extends in a second direction along a second side of the light guide plate that faces the second sidewall of the rear frame. A backlight unit for a display device includes a light guide plate and a LED substrate.