Pixel Circuit Reset Mechanism for Voltage Offset and Aperture Ratio
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Solution Overview
Problem
Display apparatuses experience significant voltage loss and reduced aperture ratio due to residual charges from previous frames affecting the display of subsequent frames, leading to flicker phenomena and sub-optimal image quality.
Innovation Solution
A pixel circuit comprising an energy storage circuit, a driving circuit, a display circuit, and a reset circuit, where the reset circuit is used to synchronize the polarity of the voltage in the display circuit with the data signal, preventing voltage offset and allowing for increased aperture ratio without increasing energy storage capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If energy storage capacity is increased to reduce voltage loss, then voltage stability is improved, but pixel area is reduced
Solution Approach 1:
The reset circuit performs preliminary action by resetting the voltage in the display circuit to the same polarity as the data signal before the data signal is written. This preliminary voltage synchronization prevents voltage offset and reduces the energy storage requirements, allowing smaller capacitors and larger pixel apertures while maintaining voltage stability.
Solution Approach 2:
The reset circuit acts as an intermediary between the data signal line and the display circuit. It mediates the voltage relationship by synchronizing the display circuit voltage with the data signal polarity, eliminating the need for large energy storage components to compensate for voltage offset.
2Stability of the object's composition
If residual charges are maintained for image holding, then display continuity is improved, but voltage offset increases
Solution Approach 1:
The reset circuit operates periodically at the beginning of each frame period, synchronizing the display circuit voltage with the incoming data signal polarity. This periodic reset action maintains display continuity by ensuring proper voltage conditions for each new frame while preventing cumulative voltage offset that would occur with continuous residual charge maintenance.
Data Source
AI summary
Embodiments of the present disclosure provide a pixel circuit and a method for driving the same and a display apparatus and a method for driving the same. The pixel circuit comprises an energy storage circuit, a driving circuit, a display circuit and a reset circuit, wherein the energy storage circuit is connected to a first scanning signal line, a data signal line and the driving circuit, and is configured to store a data signal input through the data signal line under control of the first scanning signal line, the driving circuit is connected to a second scanning signal line and the display circuit and is configured to drive the display circuit to display a picture under control of the second scanning signal line; the display circuit is connected to a second voltage terminal and is configured to display a picture under control of the driving circuit and the second voltage terminal; and the reset circuit is connected to a third scanning signal line, the data signal line and the display circuit, and is configured to set a reset signal input through the data signal line to the display circuit under control of the third scanning signal line to reset a voltage in the display circuit.