Independent Reference Voltage Circuits to Prevent LCD Image Sticking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Liquid crystal displays experience issues like image sticking due to the common use of reference voltages on array and color film substrates, which can lead to interference and quality problems.
Innovation Solution
A reference voltage generation system that includes a reference voltage generator, a voltage division circuit, and switch transistors to independently generate and manage two servo reference voltages, preventing interference between them and improving panel quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a common reference voltage is used for both array substrate and color film substrate, then the circuit structure is simple and easy to manufacture, but image sticking occurs due to interference between the two substrates
Solution Approach 1:
The patent divides the common reference voltage system into two separate reference voltage systems. The array substrate has its own reference voltage generation circuit, and the color film substrate has its own reference voltage generation circuit. This segmentation eliminates the interference between the two substrates that causes image sticking, while maintaining manufacturing simplicity through modular design.
Solution Approach 2:
The patent extracts the reference voltage generation function from a shared system and creates independent generation circuits for each substrate. By taking out the common reference voltage source and replacing it with separate sources, the harmful interference is eliminated while the overall system structure remains manageable.
2Object-affected harmful factors
If independent reference voltage systems are used for array substrate and color film substrate, then image sticking is prevented, but the circuit structure becomes more complex
Solution Approach 1:
The patent designs the independent reference voltage generation circuits to use similar circuit topologies and components for both the array substrate and color film substrate. This universality reduces design complexity and makes the overall system more manageable despite having separate reference voltage systems. The circuits can be fabricated using the same process and design rules.
Data Source
AI summary
The present application discloses a reference voltage generation system and method. The reference voltage generation system includes: a reference voltage generator; and a voltage division circuit coupled to the reference voltage generator. The reference voltage generator is coupled to a reference voltage through the voltage division circuit.