Flat Panel Display Voltage Stabilizing Unit
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Solution Overview
Problem
Flat panel displays face challenges in stabilizing voltages for data signals, leading to potential power unit misoperation and instability due to sudden voltage changes, which affects display quality and driving stability.
Innovation Solution
A signal generator system that includes a first voltage supply unit, a second voltage supply unit, and a voltage stabilizing unit to alternately supply and stabilize voltages from different voltage sources, ensuring stable voltage transitions and preventing power unit misoperation by using PMOS and NMOS transistors and resistors to manage voltage levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If voltage is supplied directly from voltage sources to data lines, then voltage supply speed is improved, but voltage stability deteriorates due to sudden voltage changes causing power unit misoperation
Solution Approach 1:
The patent applies preliminary action by first supplying a pre-emphasis voltage to the data line before supplying the actual data voltage. This preliminary voltage application prepares the data line and prevents sudden voltage changes that would cause power unit misoperation, while still maintaining fast voltage supply performance
Solution Approach 2:
The patent introduces a voltage stabilizing unit as an intermediary component between the voltage sources and the data lines. This stabilizing unit mediates the voltage transition by controlling the timing and sequence of voltage application, ensuring stable voltage supply while maintaining fast response
2Adaptability or versatility
If multiple voltage sources are used to supply different voltage levels, then voltage adaptability is improved, but device complexity increases due to multiple voltage supply units and control circuits
Solution Approach 1:
The patent applies universality by designing the voltage supply units and switches to handle multiple voltage levels through a unified control mechanism. The same hardware infrastructure (voltage supply units and switches) is used to supply different voltage levels (pre-emphasis voltage and data voltage) by changing control signal timing, rather than requiring separate dedicated circuits for each voltage level
Solution Approach 2:
The patent uses periodic action by controlling the switches to operate in a specific time sequence - first switching to supply pre-emphasis voltage, then switching to supply data voltage. This time-division multiplexing approach allows multiple voltage levels to be supplied through the same hardware infrastructure, reducing overall system complexity
Data Source
AI summary
A flat panel display includes a signal generator to generate data signals to respective data lines via an output terminal or to generate a control signal for controlling switches. The signal generator includes a first voltage supply unit to supply, to the output terminal, a voltage of a first voltage sources, a voltage stabilizing unit to raise or drop the voltage supplied to the output terminal, and a second voltage supply unit to supply, to the output terminal, a voltage from a second voltage source, after the voltage of the output terminal is raised or dropped.