Display Device Deviation Compensation Circuit for Current Difference
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Solution Overview
Problem
Display devices face challenges in maintaining optimal display quality due to current deviations caused by the physical separation of voltage lines transmitted through multiple circuit boards or cables.
Innovation Solution
A display device and method that incorporate a deviation compensation circuit and a variable circuit to sense voltage differences across circuit boards connected by cables and adjust the resistance or current flow of voltage lines to compensate for these deviations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If voltage lines are transmitted through multiple circuit boards or cables, then the display device can be constructed with modular components, but current deviations occur that deteriorate display quality
Solution Approach 1:
The patent implements a feedback mechanism where a sensing circuit detects voltage differences between circuit boards and feeds this information to a compensation circuit. The compensation circuit then adjusts current distribution based on the detected deviations, creating a closed-loop system that maintains display quality despite modular construction. This is achieved through sensing circuits that monitor voltage at different locations and compensation circuits that adjust current flow accordingly.
Solution Approach 2:
The patent changes electrical parameters (current distribution and voltage compensation) to counteract the effects of modular construction. By dynamically adjusting current values through variable circuits and compensation circuits based on detected voltage differences, the system maintains consistent display performance across all circuit boards despite their physical separation and connection through cables.
2Ease of operation
If circuit boards are physically separated and connected by cables, then device assembly is simplified, but voltage transmission consistency deteriorates
Solution Approach 1:
The patent introduces intermediary compensation circuits and sensing circuits as mediators between the physically separated circuit boards. These intermediary components detect voltage differences caused by cable connections and actively compensate for them, ensuring consistent voltage transmission across all circuit boards despite their physical separation and modular assembly.
3Adaptability or versatility
If multiple circuit boards are used to transmit voltage, then the display device can be scaled and modularized, but current uniformity across boards deteriorates
Solution Approach 1:
The patent dynamically changes current parameters through variable circuits and compensation circuits to maintain uniformity across multiple circuit boards. By sensing voltage differences and adjusting current distribution in real-time, the system ensures that each circuit board receives the appropriate current regardless of its position in the modular configuration, enabling scalable design while maintaining current uniformity.
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 current deviations, thereby enhancing display quality by ensuring consistent voltage transmission to the display panel, reducing errors, and improving overall image rendering.
Implementation Method 1
a deviation compensation circuit configured to sense voltages transmitted through a circuit board on one side and a circuit board on the other side connected by the cable
Implementation Method 2
at least one variable resistor configured to vary resistance values of the voltage lines based on the signal output from the deviation compensation circuit
Implementation Method 3
at least one transistor configured to vary an amount of current flowing through the voltage lines based on the signal output from the deviation compensation circuit
Data Source
AI summary
A display device includes a display panel configured to display images, a plurality of circuit boards connected to one side of the display panel, a cable electrically connecting at least two of the plurality of circuit boards, voltage lines disposed on the cable, the plurality of circuit boards, and the display panel, a deviation compensation circuit configured to sense voltages transmitted through a circuit board on one side and a circuit board on the other side connected by the cable among the plurality of circuit boards and to output a signal based on the sensed voltages, and a variable circuit configured to compensate for a current difference between the circuit board on one side and the circuit board on the other side based on the signal output from the deviation compensation circuit.