Display Device Connector Resistor Voltage Equalization
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Solution Overview
Problem
Display devices face defects due to over-current issues caused by voltage differences between circuit boards connected through different power source voltages, leading to heat generation and reliability concerns.
Innovation Solution
A display device design that includes a connector with a resistor portion between connection portions on circuit boards, which connects adjacent voltage lines to equalize power source voltages and reduce voltage drops, using flexible circuit boards and a main circuit board to manage power distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If circuit boards are spaced apart from each other with different line lengths, then the display device can accommodate larger display panels, but voltage differences occur leading to over-current and heat generation
Solution Approach 1:
A connector is introduced as an intermediary component between the first and second source circuit boards. This connector includes a resistor portion that acts as a mediator to equalize voltage differences by providing a controlled resistance path, thereby preventing over-current issues while maintaining the ability to support large display panels with spaced-apart circuit boards
2Adaptability or versatility
If circuit boards are spaced apart from each other, then more flexible layout is achieved, but voltage differences due to line length differences cause defects
Solution Approach 1:
The connector with resistor portion serves as a mediator that allows the circuit boards to remain spaced apart for layout flexibility while simultaneously compensating for voltage differences. The resistor portion equalizes the power source voltages by providing a controlled resistance path, thus eliminating the harmful voltage difference defects that would otherwise result from different line lengths
3Power
If power source voltages are applied to spaced circuit boards, then power distribution is achieved, but voltage drops occur due to line resistance
Solution Approach 1:
The connector with resistor portion creates a feedback mechanism where voltage differences between the two source circuit boards are automatically equalized. When one board experiences a voltage drop due to line resistance, the resistor portion in the connector provides a compensatory current path that equalizes the voltages, thereby reducing energy loss and improving overall power distribution efficiency
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 effectively compensates for voltage differences, reducing heat generation and enhancing the reliability of the display device by ensuring consistent power delivery across circuit boards.
Implementation Method 1
a resistor portion disposed between the first connection portion and the second connection portion, and the resistor portion has a relatively higher resistance than the first connection portion and the second connection portion
Data Source
AI summary
A display device includes a driver including flexible circuit boards connected to a display panel. The driver includes a first source circuit board, a second source circuit board, a main circuit board including a controller that generates a power source voltage and applying the power source voltage to each of the first source circuit board and the second source circuit board, and a connector connecting the first source circuit board and the second source circuit board. The connector is electrically connected to a first voltage line that is the most adjacent to the second source circuit board among the voltage lines of the first source circuit board and a second voltage line that is the most adjacent to the first source circuit board among the voltage lines of the second source circuit board.