Synchronized LCD Driver ICs via Internal Signal Sharing
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Solution Overview
Problem
Conventional image display devices face challenges in achieving synchronous driving of multiple integrated circuits without external synchronizing signals, leading to potential degradation in picture quality and product reliability due to erroneous driving timing.
Innovation Solution
The apparatus and method involve multiple data integrated circuits sharing internally generated synchronizing signals to generate gate and data control signals, allowing them to drive data and gate lines of the display panel synchronously, even in the absence of external synchronizing signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple data integrated circuits internally generate synchronizing signals independently, then device complexity is reduced and ease of operation is improved, but synchronous driving cannot be achieved and reliability deteriorates
Solution Approach 1:
The patent merges the synchronizing signal generation function into a single master data integrated circuit while other data integrated circuits acquire and synchronize to this master signal. This combining approach maintains operational simplicity (one circuit generates the signal) while ensuring reliable synchronous driving (all circuits follow the same timing reference), thus resolving the contradiction between ease of operation and reliability.
2Reliability
If external synchronizing signals are supplied to multiple data integrated circuits, then synchronous driving is achieved and reliability is improved, but device complexity increases
Solution Approach 1:
The master data integrated circuit serves itself by internally generating the synchronizing signal that it then distributes to other data integrated circuits. This self-service approach eliminates the need for external synchronizing signal sources, maintaining high reliability through synchronous driving while reducing device complexity by removing external signal input requirements.
3Manufacturing precision
If a single master data integrated circuit generates synchronizing signals for multiple other data integrated circuits, then synchronous driving is achieved and picture quality is improved, but the system requires a master-slave architecture increasing complexity
Solution Approach 1:
The master data integrated circuit is designed with multi-functionality, serving both as a data driver for its assigned data lines and as a synchronizing signal generator for the entire system. This universal design ensures precise synchronous driving (improving picture quality) while avoiding additional dedicated synchronizing signal generation circuits, thus not increasing overall device complexity.
Data Source
AI summary
An apparatus and method for driving an image display device are disclosed. The disclosed driving apparatus and method achieve synchronous driving of driving integrated circuits for driving an image display panel, through internal generation of drive control signals, thereby preventing a degradation in picture quality caused by erroneous driving timing while achieving an enhancement in product reliability. The driving apparatus includes a display panel, which includes a plurality of pixel regions, to display an image, a plurality of data integrated circuits, which share at least one of synchronizing signals internally generated therefrom, generate gate and data control signals in accordance with the shared synchronizing signal, and drive data lines of the display panel, using the internally-generated data control signals, and a gate driver for driving gate lines of the display panel in accordance with the gate control signal generated from one of the plural data integrated circuits.