Control Board Drive Voltage Adaptation for Display Panel Compatibility

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Solution Overview

Problem

Existing display devices face challenges in efficiently managing drive voltages across different types of display panels, leading to potential damage when a control board with a high voltage mode is applied to panels requiring lower voltage modes.

Innovation Solution

A control board with a control circuit that generates drive voltages based on feedback signals and mode signals, using a switching mechanism to prevent damage by stopping voltage generation when a high voltage mode is applied to panels requiring lower voltage modes, and includes a printed circuit board with signal lines to connect terminals appropriately based on the display panel type.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a control board with high voltage mode is applied to display panels requiring lower voltage modes, then the control board can drive high voltage panels, but it causes damage to gate driving circuits of low voltage panels

Engineering Contradiction:

Improvecompatibility with different display panel typesVSAvoiddamage to gate driving circuits

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The control board includes a detection circuit that detects the type of display panel connected (high voltage or low voltage) and provides feedback to the control circuit. Based on this feedback, the control circuit automatically adjusts the voltage output mode, preventing high voltage from being applied to low voltage panels and thus avoiding damage to gate driving circuits.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The control board dynamically switches between high voltage mode and low voltage mode based on the detected display panel type. The voltage output is not fixed but adapts in real-time according to the connected panel's requirements, enabling safe operation with both high voltage and low voltage panels.

Inventive Principle:

Principle #15Dynamics

2Device complexity

If the control board uses a fixed voltage output mode, then the circuit design is simplified, but it cannot accommodate different types of display panels with different voltage requirements

Engineering Contradiction:

Improvecontrol circuit designVSAvoidsupport for different display panel types

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The control board is designed with multi-functionality to support both high voltage and low voltage display panels. By incorporating a detection circuit and a switchable voltage output mechanism, a single control board design can universally accommodate different panel types without requiring separate dedicated control boards for each voltage requirement.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS9280926B2Control board and display device using the same

Publication Date: 2016.03.08 SAMSUNG DISPLAY CO LTD

AI summary

A control board in a display device includes terminals and a control circuit. The control circuit is configured to output a control signal an image signal through the terminals and to generate a drive voltage in response to a feedback signal, which is fed back to a second terminal of the terminals when a source voltage is applied to a first terminal of the terminals.