Chamfered Light Guide Plate Backlight Assembly
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Solution Overview
Problem
Backlight assemblies using light emitting diodes (LEDs) increase manufacturing costs and size due to complex wiring structures and the need for multiple light sources, which is not efficiently addressed by existing technologies.
Innovation Solution
A backlight assembly design featuring a light guide plate with chamfered corners and a light source unit positioned adjacent to the light incident surface, reducing the number of light sources and simplifying wiring, while incorporating a coupling recess to prevent damage from screws, thereby reducing manufacturing costs and size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple light sources are used to ensure adequate illumination, then the illumination intensity is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges multiple light sources into a single integrated light source unit that emits light in multiple directions simultaneously. This single unit replaces what would traditionally require multiple separate light sources, reducing device complexity while maintaining adequate illumination intensity through the multi-directional emission capability of the unified light source.
Solution Approach 2:
The light source unit is designed with multi-functionality to provide illumination in multiple directions (front, rear, and side directions) simultaneously. This universal light source performs the function of multiple dedicated light sources, reducing the overall number of components while ensuring adequate illumination intensity across all required areas.
2Area of stationary object
If multiple light sources are used to cover different illumination areas, then the illumination coverage is improved, but the manufacturing cost increases
Solution Approach 1:
The patent combines multiple illumination functions into a single light source unit that emits light in front, rear, and side directions simultaneously. This merging approach covers the entire illumination area that would traditionally require multiple separate light sources, reducing manufacturing cost while maintaining comprehensive illumination coverage.
Solution Approach 2:
The light source unit is designed as a universal component that performs multiple illumination functions (front illumination, rear illumination, side illumination) simultaneously. This multi-functional design eliminates the need for multiple specialized light sources, thereby reducing manufacturing cost while ensuring adequate illumination coverage across all areas.
3Reliability
If a complex wiring structure is used to connect multiple light sources, then the illumination reliability is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple wiring connections into a single simplified wiring structure by integrating multiple light sources into one unified light source unit. This reduces the number of wires and connection points required, simplifying the wiring structure while maintaining illumination reliability through the consolidated design.
Solution Approach 2:
The single light source unit serves as a universal power and control node for all illumination directions (front, rear, side). This multi-functional integration eliminates the need for separate wiring for each light source, reducing wiring structure complexity while ensuring reliable illumination through the unified electrical connection.
4Strength
If the light guide plate is directly coupled to the cover member with screws, then the assembly strength is improved, but the light guide plate may be damaged by the screws
Solution Approach 1:
The patent introduces a recess in the light guide plate as an intermediary structure that accommodates the screw. This recess acts as a mediator between the screw and the light guide plate, allowing the screw to provide assembly strength while the recessed design prevents the screw from directly damaging the light guide plate by providing a protected engagement space.
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
The design reduces manufacturing costs and size by minimizing the number of light sources and simplifying the wiring structure, while protecting the light guide plate from damage, resulting in a more efficient and cost-effective backlight assembly.
Implementation Method 1
a light guide plate and a light source unit... the light guide plate includes at least one chamfered corner and a light incident surface defined by the chamfered corner
Data Source
AI summary
A display apparatus includes a light guide plate, a light source unit, a display panel, a receiving container, and a driving part. The light guide plate includes at least one chamfered corner and a light incident surface defined by the chamfered corner. The light source unit generates the light and is positioned adjacent to the light incident surface. The display panel receives the light to display an image and the receiving container includes a bottom and sidewalls extended from the bottom to receive the light guide plate and the light source unit. The driving part is electrically connected to the display panel to apply a driving signal to the display panel and is electrically connected to the light source unit to apply a power source voltage to the light source unit.