Pixel Sensing Circuit Integrator Preliminary Stabilization
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Solution Overview
Problem
The operating range of pixel sensing circuits in display devices is limited, leading to unstable output voltages during sensing, which can result in errors and degraded image quality, especially in OLED panels where increased load and display speed further reduce the sensing circuit's effectiveness.
Innovation Solution
The introduction of a second operation signal that allows the integrator to start operating in a preliminary phase before the main sensing phase, extending the sensing time and ensuring stable output voltages by maintaining the amplifier in a turn-on state during both the preliminary and sensing sections, thereby reducing errors and improving image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sensing section is increased to stabilize the output voltage for accurate sensing, then the sensing accuracy is improved, but the display section is reduced or the frame rate is reduced
Solution Approach 1:
The pixel sensing circuit is activated during a preliminary operation section (pre-sensing period) before the main sensing section. This preliminary action allows the output voltage to be stabilized in advance, so that when the main sensing occurs, the voltage is already stable, eliminating the need to extend the sensing section duration and preserving frame rate.
2Measurement precision
If the sensing section is increased to stabilize the output voltage, then the sensing accuracy is improved, but the display section is reduced
Solution Approach 1:
The pixel sensing circuit operates during a preliminary operation section that occurs before the main sensing section. This preliminary operation stabilizes the output voltage in advance, allowing the main sensing to be completed within the original sensing section timeframe, thereby preserving the display section area without compromising sensing accuracy.
3Reliability
If the operating range of the pixel sensing circuit is extended to ensure stable output voltage, then the sensing reliability is improved, but the device complexity increases
Solution Approach 1:
A preliminary operation section is introduced before the main sensing section, during which the pixel sensing circuit is activated to stabilize the output voltage. This temporal extension rather than circuit complexity extension achieves reliable sensing by preparing the voltage stability in advance, avoiding the need for additional complex circuitry.
4Productivity
If the pixel sensing circuit operates with limited range due to OLED load and display speed, then the display performance is maintained, but the sensing accuracy deteriorates
Solution Approach 1:
The pixel sensing circuit is activated during a preliminary operation section before the main sensing occurs. This preliminary activation allows the circuit to stabilize its output voltage in advance, ensuring accurate sensing even under the constraints of high display speed and OLED load, without requiring extension of the sensing section that would impact display performance.
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 secures stable sensing voltages, reduces sensing errors, and minimizes the required sensing time, allowing for improved image quality without compromising display time or frame rate.
Implementation Method 1
an integrator for integrating a current of the pixel
Data Source
AI summary
The present disclosure relates to a pixel sensing circuit which extends an operation section of an integrator by using an additional signal and allows securing a time required for a stable output of a sensing voltage.