Integrated LED and Driver Package for Backlight Unit Volume Reduction
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Solution Overview
Problem
Conventional backlight units for liquid crystal displays require separate planes for mounting light emitting diodes and driving units, leading to increased production costs, potential failures in connections, and increased volume due to the need for additional components and connections.
Innovation Solution
Integrating light emitting chips and driving chips into a single package, mounted on a circuit board with shared power, ground, and control lines, allowing for direct connection and encapsulation, thereby simplifying the circuit and reducing production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If light emitting diodes and driving units are mounted on separate planes, then the driving units can be independently formed and connected, but the production cost increases and the volume of the backlight unit increases
Solution Approach 1:
The patent combines the light emitting diode and driving unit into a single integrated package, eliminating the need for separate planes and connection members. This merging reduces the overall volume of the backlight unit while maintaining the functional independence of the driving unit through integrated circuit design on the same substrate.
2Ease of manufacture
If light emitting diodes and driving units are mounted on separate planes, then the driving units can be independently formed, but additional connection members are required increasing production cost
Solution Approach 1:
The patent integrates the driving unit circuit directly onto the same plane as the light emitting diodes, eliminating the need for separate connection members between planes. This reduces device complexity and production cost while maintaining independent driving functionality through integrated circuit design.
3Ease of manufacture
If light emitting diodes and driving units are mounted on separate planes, then the driving units can be independently formed, but connection failures may occur
Solution Approach 1:
The patent merges the driving unit and light emitting diode into a single integrated package, eliminating external connections between separate planes. This integration removes potential connection failure points, significantly improving reliability while maintaining independent driving control through on-chip circuit design.
4Area of stationary object
If light emitting chip occupies small area in housing, then large area remains in housing, but separate mounting of driving chip requires additional space
Solution Approach 1:
The patent combines the light emitting chip and driving chip into a single integrated package mounted on one plane, utilizing the remaining housing area efficiently. This eliminates the need for a second mounting plane, reducing device complexity while making effective use of the available space in the housing.
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 solution reduces production costs, minimizes connection-related failures, and decreases the volume of the backlight unit while enabling efficient power management and control of light emitting devices.
Implementation Method 1
An example of a light source of the backlight unit spotlighted in recent years is a light emitting diode (LED)
Data Source
AI summary
A backlight unit and a liquid crystal display including the same are provided. The backlight unit includes a circuit board, at least one internal interconnection formed on the circuit board, and a plurality of light emitting devices mounted to be connected with the at least one internal interconnection on the circuit board, each of the plurality of light emitting devices including at least one light emitting chip and at least one driving chip.