Tangent Angle Circuit Discharging Module Distribution

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Solution Overview

Problem

In LCD driving systems, the tangent angle circuit faces issues with overheating due to high current flow through discharging modules, leading to potential burning and congestion on the control board, which affects heat dissipation and increases the system's footprint.

Innovation Solution

The tangent angle circuit is designed with discharging modules distributed on each scan line driving circuit, reducing the burden of discharged charges and spatially separating them to avoid overheating, while using MOS transistors and resistors to control discharging and charging processes, and incorporating a voltage stabilizing module to regulate discharge voltage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If all discharging modules are installed on the control board, then the control is centralized, but the temperature rises gradually causing overhigh temperature or burning-down

Engineering Contradiction:

Improvecontrol structureVSAvoiddischarging module temperature

Core Design Contradiction:

Device complexityVSTemperature

Solution Approach 1:

The patent divides the discharging modules into multiple independent units distributed across different scan line driving circuits rather than consolidating them on the control board. This segmentation reduces the current burden on each individual module and improves heat dissipation by spreading them out spatially, preventing overheating and burning-down issues.

Inventive Principle:

Principle #1Segmentation

2Temperature

If discharging modules are distributed on scan line driving circuits, then heat dissipation is improved, but the system architecture becomes more complex

Engineering Contradiction:

Improveheat dissipationVSAvoidsystem architecture

Core Design Contradiction:

TemperatureVSDevice complexity

Solution Approach 1:

The system is segmented into multiple independent scan line driving circuits, each with its own discharging module. This segmentation naturally distributes the heat generation across multiple locations, improving overall heat dissipation while maintaining a modular architecture that is manageable despite the increased number of components.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Each scan line driving circuit is equipped with its own discharging module, creating local self-sufficiency. This local quality approach allows each module to handle its own discharge operations independently, improving heat dissipation at each location while maintaining systematic control through the distributed architecture.

Inventive Principle:

Principle #3Local quality

3Manufacturing precision

If MOS transistor is used to control cut-in voltage, then the charging control is precise, but the discharging process generates excessive heat

Engineering Contradiction:

Improvecharging control precisionVSAvoiddischarging heat

Core Design Contradiction:

Manufacturing precisionVSTemperature

Solution Approach 1:

The patent segments the discharging function into multiple distributed modules rather than using a single centralized MOS transistor control system. This segmentation reduces the current density and heat generation in each individual module while maintaining precise control capabilities through the distributed architecture.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces discharge resistors as intermediary components in the discharging path of each module. These resistors work alongside the MOS transistors to control the discharging process, distributing the power dissipation and reducing the heat burden on any single component while maintaining precise control.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 design effectively reduces overheating, prevents component congestion, and minimizes the control board's area by distributing discharging modules, enhancing heat dissipation and reducing the system's footprint.

Implementation Method 1

adopts a metal-oxide-semiconductor (MOS) transistor as a switch component to control a cut-in voltage to charge scan line driving circuits

Methodology Applied

Scientific EffectMOS transistor switching:

Implementation Method 2

the scan line driving circuits discharge through the discharging modules so as to transmit charges from a load end of the scan line driving circuits to the ground

Methodology Applied

Scientific EffectJoule heating: Joule Heating

Data Source

PatentUS8854288B2Tangent angle circuit in a liquid crystal display driving system having a charging and discharging module for the scan line driving circuits

Publication Date: 2014.10.07 TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO LTD

AI summary

A tangent angle circuit is connected to a plurality of scan line driving circuits and comprises: a charging module integrated on a control board to receive input of a direct current (DC) driving voltage and output a cut-in voltage to charge the scan line driving circuits; and a plurality of discharging modules integrated on the scan line driving circuits respectively to control the corresponding scan line driving circuits to discharge. In the present invention, by distributing the discharging modules on each of the scan line driving circuits respectively, the burden of load discharged charges on the discharging modules is reduced to avoid occurrence of an overhigh temperature; and the discharging modules are spatially separated, which is further favorable for reducing the temperature, releasing the space of the control board and reducing the area of the control board.