OLED Display Signal Generator Capacitance Matching
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Solution Overview
Problem
Existing organic light emitting diode (OLED) displays face challenges in efficiently managing clock signals due to capacitance differences between clock signal input ends, leading to potential damage from static electricity and signal delays.
Innovation Solution
The OLED display incorporates first and second emitting signal generators with multiple emitting signal stages, each connected to n-numbered pixel rows, and includes a matching capacitor to equalize capacitance between clock signal input ends, ensuring balanced loads and preventing static electricity damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If clock signal wires are connected to clock signal input ends with different capacitance values, then the emitting signal generator can operate, but signal delays occur and static electricity damage may result
Solution Approach 1:
The patent changes the capacitance parameter by adding a matching capacitor to one of the clock signal input ends. This adjusts the electrical characteristic (capacitance) to match between the two input ends, thereby eliminating signal delays and protecting against static electricity damage while maintaining normal operation of the emitting signal generator
2Reliability
If a matching capacitor is added to equalize capacitance between clock signal input ends, then signal delays are reduced and static electricity protection is improved, but device complexity increases
Solution Approach 1:
The matching capacitor acts as an intermediary element that mediates between the two clock signal input ends with different capacitance values. By introducing this intermediate component, the patent achieves capacitance equalization without fundamentally redesigning the entire circuit, thus improving reliability while adding only minimal complexity
Data Source
AI summary
An organic light emitting diode display includes a display area including a pixel for receiving an emitting signal and emitting light, and first and second emitting signal generators provided on respective sides of the display area. Each of the first and second emitting signal generators includes a plurality of emitting signal stages. Each of the plurality of emitting signal stages are respectively connected to n-numbered pixel rows, and two adjacent emitting signal stages to which the n-numbered adjacent pixel rows are connected are in a same one of the first and second emitting signal generators.