One-Piece Backlight Module for Uniform Light Emission
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Solution Overview
Problem
Conventional backlight modules for LCD devices are complex and prone to defects in mass production due to their multi-component structure, which results in imperfect light conversion and non-uniform light emission.
Innovation Solution
A one-piece backlight module is developed, comprising a brightness enhancement unit and a light emitting unit with electrode layers and a light emitting layer, integrated as a single body to provide uniform light without the need for a light guide plate or reflectors, simplifying assembly and reducing defect rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a multi-component backlight module structure is used, then light conversion can be achieved, but assembly complexity increases and defect rate increases
Solution Approach 1:
The patent merges the light guide plate, brightness enhancement film, and diffusing film into a single integrated component called a 'one-piece backlight module'. This consolidation eliminates multiple assembly steps and reduces the number of interfaces where defects can occur, directly resolving the contradiction between reliability and device complexity.
2Illumination intensity
If separate components are used for light conversion, then light guidance can be achieved, but light uniformity deteriorates
Solution Approach 1:
By integrating the light guide plate, brightness enhancement film, and diffusing film into a single monolithic structure, the patent ensures uniform light distribution without the alignment and interface issues that arise from separate components. The integrated design maintains optical performance while eliminating the complexity of multiple discrete parts.
3Manufacturing precision
If conventional multi-component structure is used, then light emission can be achieved, but manufacturing precision decreases
Solution Approach 1:
The integrated one-piece backlight module eliminates multiple assembly operations and interfaces, significantly improving manufacturing precision. With a single component design, there are no alignment tolerances or interface sealing issues to manage, making the manufacturing process simpler and more precise.
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 integrated design enhances light concentration and uniformity, improving brightness for the liquid crystal panel while simplifying the manufacturing process and reducing production defects.
Implementation Method 1
a light emitting unit (260) under the brightness enhancement unit (240). The brightness enhancement unit (240) and the light emitting unit (260) are gaplessly interfaced with each other as portions of a single body
Implementation Method 2
The integrated design enhances light concentration and uniformity, improving brightness for the liquid crystal panel
Data Source
AI summary
An exemplary one-piece backlight module (200) includes a brightness enhancement unit (240); and a light emitting unit (260) including a first electrode layer (261), a second electrode layer (264), and a light emitting layer (262) between the first and second electrode layers. The brightness enhancement unit and the light emitting unit are stacked one above the other. A liquid crystal display device using the backlight module is also provided.