Source Driver Temperature Detection Circuit for Display Devices

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Solution Overview

Problem

Existing display source drivers face operational failures and image quality deterioration due to increased temperature, requiring temperature abnormality detection and notification mechanisms, but current methods are cumbersome and require manual probe connections for testing.

Innovation Solution

Incorporating a temperature abnormality detection circuit and notification processing part within the source driver to detect temperature thresholds and display notification images or change display patterns on the panel, eliminating the need for manual probe connections during temperature evaluation tests.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a temperature abnormality detection circuit and notification processing part are incorporated into the source driver, then temperature evaluation testing becomes easy and real-time without manual probe connections, but device complexity increases

Engineering Contradiction:

Improvetemperature evaluation testingVSAvoidsource driver structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The source driver performs temperature evaluation testing on its own without requiring external testers or manual probe connections. The temperature abnormality detection circuit continuously monitors the source driver's temperature, and the notification processing part automatically displays temperature status on the display panel, enabling the device to self-test and self-report temperature abnormalities.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The display panel serves dual purposes: it functions as both the display output device and as a notification interface for temperature abnormality information. By reusing the existing display panel for temperature notification, the patent avoids adding separate indicator devices, thereby reducing overall system complexity while achieving multi-functionality.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Device complexity

If manual probe connections are used for temperature evaluation testing, then device complexity remains low, but ease of operation deteriorates due to troublesome manual connection work

Engineering Contradiction:

Improvesource driver structureVSAvoidtemperature evaluation testing

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

Inventive Principle:

Principle #25Self-service

3Productivity

If the source driver operates at high temperature, then productivity is maintained, but reliability deteriorates due to operational failures and image quality deterioration

Engineering Contradiction:

Improvedisplay operationVSAvoidsource driver operation

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The temperature abnormality detection circuit continuously monitors the source driver's temperature and provides feedback to the notification processing part. When the temperature exceeds a predetermined threshold, the system immediately notifies the user through the display panel, allowing for timely intervention before operational failures occur, thus maintaining reliability while enabling continuous operation.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system prepares for potential temperature-related failures by continuously monitoring temperature and providing advance warning through the notification processing part. This allows operators to take preventive measures before actual operational failures or image quality deterioration occur, cushioning against reliability issues.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

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

Enables easy and real-time temperature evaluation testing without manual probe connections, preventing operational failures by reducing heat generation and informing of temperature abnormalities through visual display on the panel.

Implementation Method 1

a temperature abnormality detection circuit that detects a temperature inside the source driver and generates a temperature abnormality detection signal indicating the presence of a temperature abnormality when the temperature is higher than a predetermined temperature threshold

Methodology Applied

Scientific EffectTemperature detection:

Data Source

PatentUS11532257B2Display driver and display device

Publication Date: 2022.12.20 LAPIS TECH CO LTD

AI summary

The disclosure provides a display driver and a display device which includes the display driver. A display driver according to the disclosure has a temperature abnormality detection circuit that detects a temperature inside the display driver and generates a temperature abnormality detection signal indicating the presence of a temperature abnormality when the temperature therein is higher than a predetermined temperature threshold, and a temperature abnormality notification processing part that causes a display panel to display an image for informing of occurrence of a temperature abnormality for a predetermined period instead of an image based on a video signal in accordance with the temperature abnormality detection signal.