Backlight Assembly Reducing Connector Count via Current Balancing
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Solution Overview
Problem
The high number of electrical connectors and wires between the LED backlight unit and the backlight driver in liquid crystal display devices increases production costs due to the use of expensive connectors and wires, which is a limitation in existing technologies.
Innovation Solution
A backlight assembly for liquid crystal display devices that includes an LED backlight unit with multiple light emitting diode strings coupled to current balancing circuits and a backlight driver with a light emitting diode driver, where each current balancing circuit is connected to the driver via a single connector, reducing the need for multiple connectors and wires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple connectors and wires are used to connect LED strings to the backlight driver, then electrical connection reliability is improved, but production cost increases
Solution Approach 1:
The patent merges multiple electrical connections into a single connector that interfaces with the backlight driver. Instead of having separate connectors for each LED string, the invention uses one connector that internally connects to multiple LED strings through current balancing circuits, thereby reducing the number of connectors and wires while maintaining electrical connection reliability.
Solution Approach 2:
The single connector serves multiple functions by connecting to multiple LED strings simultaneously through current balancing circuits. This universal connector replaces what would traditionally require multiple separate connectors, reducing component count while maintaining the ability to drive multiple LED strings reliably.
2Reliability
If multiple connectors are used for each LED string, then electrical connection stability is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple electrical connections into a single connector interface. The current balancing circuits are integrated into the LED backlight unit and connect to the backlight driver through one connector, reducing the number of wires and connectors from multiple individual connections to a single consolidated connection point.
Solution Approach 2:
The current balancing circuits act as intermediaries between the single connector and the multiple LED strings. These circuits receive electrical signals from the single connector and distribute them appropriately to multiple LED strings, maintaining connection stability without requiring multiple separate connectors.
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 configuration significantly reduces the number of connectors and wires, thereby lowering production costs and simplifying the electrical connection between the LED backlight unit and the backlight driver, making the backlight assembly more cost-effective.
Implementation Method 1
an LED backlight unit including a plurality of light emitting diode strings
Data Source
AI summary
A backlight assembly for a liquid crystal display device including an LED backlight unit including a plurality of light emitting diode strings coupled to a plurality of current balancing circuits, a backlight driver including a light emitting diode driver that supplies current to the light emitting diode strings, and a connector electrically connecting the plurality of current balancing circuits to the light emitting diode driver.