Driver IC Synchronized Over-Temperature Protection for Display Panels
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Solution Overview
Problem
Conventional over-temperature protection mechanisms in display devices only protect individual components, such as driver integrated circuits, and fail to address overheating issues across the entire panel system, leading to instability and safety concerns.
Innovation Solution
Implementing a system with at least one first driver integrated circuit (IC) and one second driver IC, where both ICs are coupled to the display panel and communicate to stop driving the panel when the first IC detects overheating, ensuring complete protection and stability by synchronously adjusting and optimizing functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single component OTP mechanism is implemented, then that component is protected from overheating, but other components in the system continue to operate and cause display problems
Solution Approach 1:
The patent merges the OTP mechanisms of multiple driver ICs into a coordinated system. The first driver IC and second driver IC are coupled together such that when one detects overheating, both ICs simultaneously stop driving the display panel, achieving system-wide protection rather than isolated component protection.
Solution Approach 2:
The patent implements feedback communication between driver ICs. When the temperature sensor in the first driver IC detects overheating, it generates a first OTP signal that is transmitted to the second driver IC, which then stops driving the panel based on this feedback signal, ensuring synchronized protection across the system.
2Productivity
If driver ICs continue operating at high temperature, then productivity is maintained, but stability and safety issues occur
Solution Approach 1:
The patent applies preliminary anti-action by detecting temperature increases before they cause damage. The temperature sensor continuously monitors the driver IC temperature, and when the threshold is approached, the OTP mechanism proactively stops the driving operation before instability or burnout occurs, preventing rather than reacting to failures.
3Temperature
If temperature monitoring is implemented in one driver IC, then that IC's temperature is controlled, but power consumption is not optimized across the system
Solution Approach 1:
The patent makes the OTP mechanism universal across the entire display driving system. By coupling both driver ICs together and implementing synchronized shutdown, the system optimizes power consumption at the system level rather than just at the individual IC level, ensuring that no component continues to consume power when the system requires protection.
Data Source
AI summary
A display device and a driving device thereof is disclosed. The driving device is coupled to a display panel. The driving device includes at least one first driver integrated circuit (IC) and at least one second driver integrated circuit (IC). The first driver integrated circuit is coupled to the display panel. The first driver integrated circuit drives the display panel and detects a first working temperature. The second driver integrated circuit is coupled to the display panel and the first driver IC. The second driver integrated circuit drives the display panel. The first driver IC stops driving the display panel and communicates with the second driver IC to stop driving the display panel when the first working temperature is substantially higher than a first given temperature.