Display Device Converter for Separated Panel and Main Board
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Solution Overview
Problem
Existing display devices face limitations in cable length and thickness due to signal loss or power loss, restricting the separation distance between the panel and the main board.
Innovation Solution
A display device design that incorporates a converter to step down high voltage power from the housing to a lower driving voltage for the panel, using Pulse Width Modulation (PWM) control and multiple channels to optimize power delivery, allowing for longer and thinner cables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the cable length is increased to allow greater separation between panel and main board, then the design flexibility is improved, but signal loss and power loss increase
Solution Approach 1:
The patent changes the voltage parameter by boosting it to a higher level before transmission through the cable. This allows the cable to be longer while maintaining adequate power delivery, as the higher voltage compensates for resistive losses over distance. The converter unit at the panel end then steps down this boosted voltage to the appropriate operating level.
2Loss of energy
If the cable thickness is increased to reduce power loss, then the power delivery capability is improved, but the cable becomes bulkier and design constraints increase
Solution Approach 1:
The patent changes the voltage parameter by boosting it to a higher level before transmission. This allows the use of a thinner cable because the higher voltage reduces the current required for the same power transmission, and lower current reduces the required cable cross-sectional area while maintaining acceptable power loss levels.
3Ease of operation
If the panel and main board are separated to enable wall mounting, then the usability is improved, but the cable length is restricted by signal and power loss
Solution Approach 1:
The patent changes the voltage parameter by boosting it to a higher level for transmission through the cable connecting the separated main board and panel. This higher voltage enables the cable to be longer while maintaining adequate power and signal quality, thus allowing greater separation distance and enabling wall mounting configurations.
4Length of stationary object
If a converter is added to step down voltage at the panel, then the cable length capability is improved, but the device complexity increases
Solution Approach 1:
The patent segments the power conversion function into a separate converter unit that is integrated with the panel assembly rather than being part of the main board. This segmentation allows the main board to focus on signal processing while the converter unit handles power conversion, enabling longer cable operation while distributing the complexity across modular components.
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 enables longer cable lengths and thinner designs by maintaining efficient power delivery to the panel, reducing signal loss and power constraints, while improving usability and reducing the thickness of the display body.
Implementation Method 1
The converter performs conversion of power through Pulse Width Modulation (PWM) control
Implementation Method 2
the converter converts the first voltage into a second voltage lower than the first voltage and supplies power to the panel at the second voltage
Data Source
AI summary
The present invention relates to a display device of separated type in which a panel and a main board are spaced apart from each other. The display device includes a display body including a panel, a housing spaced apart from the display body to transmit or receive a signal to or from the display body, and a cable configured to connect the display body and the housing, wherein the display body further includes a converter configured to converter power supplied from the housing via the cable into driving power for the panel.