Display Panel Signal Distribution for Image Stain Prevention
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Solution Overview
Problem
Conventional display devices face issues with shortened scan time for pixels, leading to image stains due to the distribution of data signals, which causes previous data signals to remain in data lines and mix with new signals.
Innovation Solution
A display panel design that includes a distributor to transfer data signals to data lines in specific periods, with pixels initialized and data stored in response to control and scan signals, allowing for concurrent initialization and writing operations, thereby extending scan time and preventing signal mixing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data signals are distributed using a de-multiplexer to prevent signal mixing, then signal integrity is improved, but scan time for each pixel is shortened causing image stains
Solution Approach 1:
The patent segments the data signal distribution into multiple time periods (first period and second period) within one frame period. Different data signals are distributed to different data lines in different periods, allowing extended scan time while preventing signal mixing through temporal separation.
Solution Approach 2:
The patent performs preliminary initialization of pixels before data signal distribution. The initialization signal is applied in advance to clear previous data signals from data lines, preventing mixing with new signals. This preliminary action ensures signal integrity while maintaining extended scan time for each pixel.
2Manufacturing precision
If scan time is extended to prevent image stains, then display quality is improved, but data signal distribution efficiency decreases
Solution Approach 1:
The patent maintains continuous useful action by overlapping the initialization period with the data signal distribution period. While data signals are being distributed in the first and second periods, initialization signals are simultaneously applied to pixels, ensuring that initialization continues without interruption and does not extend the overall frame period.
Solution Approach 2:
The patent uses periodic action by dividing the frame period into multiple distinct periods (initialization period, first period, second period) with regular timing. This periodic structure allows systematic distribution of multiple data signals while maintaining consistent scan time for each pixel, balancing display quality with distribution efficiency.
Data Source
AI summary
A display panel includes a distributor to transfer a second data signal to a second data line in a first period of a data period and to transfer a first data signal to a first data line in a second period of the data period, the second period being different from the first period; a first pixel electrically connected to the first data line, to initialize a first previous data signal in the data period in response to a first control signal, and to store the first data signal in the second period in response a scan signal; and a second pixel electrically connected to the second data line and to store the second data signal in the first period in response to the scan signal.