Display Driver Voltage Drop Unit for Single-Channel Stability
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Solution Overview
Problem
Large-sized display devices require multiple channels in their driving circuits for stability, leading to increased manufacturing costs and thickness.
Innovation Solution
A display device configuration that includes a power transformer, a rectifier, a converter, and a voltage drop unit to reduce the input voltage to the driving circuit, allowing for a single channel to drive a display panel, using a buck converter and capacitors to ensure sufficient voltage for image display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple channels are implemented in the driving circuit for stability in large-sized display panels, then the reliability is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent changes the voltage parameter by dropping it to a specific level (e.g., 5V or lower) to enable single-channel operation. This parameter change allows the driving circuit to maintain stability with fewer channels, resolving the contradiction between reliability and device complexity
Solution Approach 2:
The patent introduces a dynamic voltage drop mechanism that adjusts the voltage level based on the display panel size and requirements. This dynamic adjustment enables the system to operate reliably with a single channel while adapting to different display configurations
2Reliability
If multiple channels are implemented in the driving circuit for stability, then the reliability is improved, but the manufacturing cost increases
Solution Approach 1:
By changing the voltage parameter to a dropped level, the patent enables the use of simpler, less expensive driving circuits with fewer channels, directly reducing manufacturing cost while maintaining stability through the voltage drop mechanism
3Reliability
If multiple channels are implemented in the driving circuit, then the reliability is improved, but the thickness of the display device increases
Solution Approach 1:
The voltage drop to specific levels (5V or lower) enables the use of thinner, more integrated driving circuit components, reducing the overall thickness of the display device while maintaining reliability through the stabilized voltage output
Solution Approach 2:
The patent integrates the voltage drop function within the driving circuit itself, nesting the voltage regulation mechanism inside the existing circuit architecture. This eliminates the need for separate external components, reducing thickness while maintaining stability
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 reduces the number of channels and manufacturing costs while maintaining stability and performance, enabling the display of images on large-sized panels with reduced thickness.
Implementation Method 1
a power transformer converting an input voltage into a specified voltage
Implementation Method 2
a rectifier rectifying a voltage converted through the power transformer
Implementation Method 3
a converter converting a voltage rectified through the rectifier based on a control signal for outputting an image
Implementation Method 4
a voltage drop unit dropping a voltage input through the rectifier
Implementation Method 5
The voltage drop unit may include a capacitor
Data Source
AI summary
Disclosed is a display device including a power transformer converting an input voltage into a specified voltage, a display driver including a rectifier rectifying a voltage converted through the power transformer and a converter converting a voltage rectified through the rectifier based on a control signal for outputting an image, and a display panel receiving a converted voltage through the display driver to display the image. The display driver may include a voltage drop unit dropping a voltage input through the rectifier. Other various embodiments as understood from the specification are also possible.