Dynamic Resistance Circuit for Display Panel Voltage Stability
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Solution Overview
Problem
The capacitance coupling effect in display panels affects voltage stability and image quality, leading to inefficiencies in pixel charging and horizontal block phenomena due to the need for repetitive adjustments of clipping resistances to optimize resistance values.
Innovation Solution
A device and method involving a control circuit, memory circuit, timing circuit, and resistance circuit with a resistance controller and switches, which adjusts resistance values based on stored data to optimize voltage waveforms without the need for multiple clipping resistances, improving efficiency and reducing the horizontal block phenomenon.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple clipping resistances are used to optimize voltage waveforms, then voltage stability and image quality are improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent applies a dynamic resistance adjustment mechanism where the clipping resistance value is not fixed but can be changed based on different working conditions. The control circuit reads resistance control data from memory and adjusts the resistance circuit accordingly, allowing the same physical resistance component to effectively provide multiple resistance values. This resolves the contradiction by replacing multiple static resistance components with one dynamic resistance component that can adapt to different requirements.
Solution Approach 2:
The patent changes the resistance parameter dynamically by controlling a resistance circuit with adjustable resistance values. The control circuit outputs resistance control data to adjust the resistance circuit, enabling the same circuit to produce various clipped voltage waveforms by changing the resistance parameter. This eliminates the need for multiple physical clipping resistances while maintaining the ability to optimize voltage waveforms for different conditions.
2Manufacturing precision
If repetitive adjustments of clipping resistances are performed to find optimal resistance values, then pixel charging time is optimized, but productivity and working efficiency decrease
Solution Approach 1:
The patent implements preliminary action by pre-storing multiple resistance control data values in the memory circuit before actual operation. The control circuit can directly read and apply these pre-calculated resistance values without requiring repetitive trial-and-adjustment operations during manufacturing or operation. This eliminates the need for time-consuming repetitive adjustments while maintaining optimal pixel charging performance.
Solution Approach 2:
The patent incorporates a timing circuit that provides feedback control for resistance adjustment. The timing circuit monitors the pixel charging process and provides feedback signals to the control circuit, which then adjusts the resistance circuit accordingly. This automated feedback mechanism replaces manual repetitive adjustments, optimizing pixel charging time efficiently without reducing productivity.
3Reliability
If manual adjustments and repetitive operations are used to optimize clipping resistance, then voltage waveform control is achieved, but ease of operation deteriorates
Solution Approach 1:
The patent implements self-service through an automated control system where the control circuit automatically reads resistance control data from memory and adjusts the resistance circuit without requiring manual intervention. The system self-regulates the clipping resistance based on stored data and timing feedback, eliminating tedious manual adjustments while maintaining precise voltage waveform control. This significantly improves ease of operation while preserving voltage waveform control reliability.
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 approach enhances voltage waveform clipping, reduces the number of required resistances, and improves display panel efficiency while saving costs by allowing the same circuit to produce various clipped voltage waveforms without manual adjustments.
Implementation Method 1
a resistance circuit configured to be coupled with the control circuit and including a resistance controller... the resistance circuit is configured to adjust its own resistance according to the received resistance control data
Data Source
AI summary
An embodiment of the present disclosure provides a device of driving a display panel, comprising: a control circuit, a memory circuit, a timing circuit and a resistance circuit; where the control circuit is configured to read resistance control data stored in the memory circuit and output the resistance control data to the timing circuit and the resistance circuit, the resistance circuit is configured to adjust its own resistance according to the received resistance control data.