Lighting Unit with Resin Layer for LCD Backlight
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Solution Overview
Problem
Conventional liquid crystal display (LCD) devices require a backlight unit to emit white light for color reproduction, leading to energy consumption and size constraints due to the need for a separate light source.
Innovation Solution
A lighting unit with a light-transmitting resin layer covering a light emitting module and bottom cover, incorporating multiple light emitting diodes and an optical sheet for improved light distribution and efficiency, which serves as a compact and energy-efficient light source for LCD panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a separate backlight unit with light guide plate is used, then white light is emitted for color reproduction, but device size and energy consumption increase
Solution Approach 1:
The patent combines the light emitting module and bottom cover into an integrated lighting unit structure. The light-transmitting resin layer is formed to cover both components simultaneously, merging previously separate elements (backlight unit, light guide plate, bottom cover) into a single integrated assembly, thereby reducing overall device size while maintaining white light emission capability
Solution Approach 2:
The lighting unit serves multiple functions: it acts as both the light source and the bottom cover structure, eliminates the need for separate light guide plates, and provides structural support. This multi-functionality reduces the number of components needed while maintaining the white light emission required for color reproduction
2Illumination intensity
If a separate backlight unit with light guide plate is used, then white light is emitted for color reproduction, but energy consumption increases
Solution Approach 1:
By merging the light emitting module directly with the bottom cover and eliminating intermediate components like light guide plates, the patent reduces energy loss through fewer optical interfaces and material layers. The integrated structure allows more efficient light transmission from the LEDs to the display panel, reducing the total energy required to achieve the same illumination intensity
3Illumination intensity
If multiple components are used in backlight unit, then light distribution is achieved, but device complexity increases
Solution Approach 1:
The patent merges the bottom cover and light emitting module into a single integrated lighting unit, eliminating the need for separate light guide plates and reducing the number of discrete components. The light-transmitting resin layer is formed as a single component that performs both structural and optical functions, simplifying the overall device architecture while maintaining effective light distribution
Solution Approach 2:
The lighting unit is designed to perform multiple functions simultaneously: it provides structural support as a bottom cover, generates light through mounted LEDs, and distributes light uniformly through the integrated light-transmitting resin layer. This multi-functionality reduces component count and device complexity while achieving the required light distribution characteristics
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 solution enhances light efficiency and distribution, reduces the need for separate light guide plates, and allows for local dimming capabilities, resulting in a more compact and energy-efficient display device.
Implementation Method 1
a plurality of light emitting diodes mounted on the board
Implementation Method 2
a light-transmitting resin layer covering the bottom cover and the board
Data Source
AI summary
A lighting unit may include a bottom cover having a plurality of sidewalls, a board, a plurality of light emitting diodes, and a light-transmitting resin layer over the plurality of light emitting devices and the board. One of the sidewalls includes a first fixing groove having an inside region greater than an opened inlet region. The light-transmitting resin layer may be provided within the first fixing groove in order to support the light-transmitting resin layer.