Display Signal Correction for Blue Light Reduction and Resolution
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Solution Overview
Problem
The single driving mode of display devices, which alternates between different efficiencies of blue light emission based on the time of day, limits the number of pixels driven, reducing resolution and degrading display quality compared to mixed driving modes.
Innovation Solution
A display device and method that includes a signal corrector to generate corrected data for first color pixels based on the data signal of second color pixels in a single driving mode, allowing first color pixels to emit light of different grayscale values, thereby improving resolution and display quality by sharing the resolution obtained from driving second color pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If single driving mode is used to reduce blue light exposure and improve health effects, then health benefits are improved, but the number of pixels driven is limited reducing resolution and display quality
Solution Approach 1:
The patent applies the copying principle by generating corrected data for first color pixels based on data signals from second color pixels. This creates a virtual representation or copy of the second color pixel data to compensate for the reduced number of driven pixels, thereby maintaining resolution quality while operating in single driving mode to reduce blue light exposure.
Solution Approach 2:
The patent changes the data parameters of the first color pixels by generating corrected data that incorporates information from second color pixels. This parameter transformation allows the first color pixels to emulate the resolution contribution that would normally come from both first and second color pixels being driven, thus maintaining display quality under single driving mode constraints.
2Object-affected harmful factors
If single driving mode is used to alternate blue light emission based on time of day, then health effects are improved, but display quality is degraded due to limited pixels driven
Solution Approach 1:
The signal corrector creates a copy or representation of the second color pixel data to compensate for not driving second color pixels in single driving mode. This copied data is then used to generate corrected output that maintains display quality and reliability while still benefiting from the reduced blue light exposure of single driving mode.
Solution Approach 2:
The signal corrector acts as an intermediary component that processes data signals from driven pixels and generates corrected data that simulates the output that would result from driving all pixels. This intermediary processing layer bridges the gap between the limited driven pixels in single driving mode and the full display quality expected from mixed driving mode.
3Object-affected harmful factors
If first color pixels are driven to emit light in single driving mode, then blue light exposure is reduced, but resolution is reduced due to fewer pixels being driven
Solution Approach 1:
The patent transforms the data parameters of first color pixels by generating corrected data that incorporates spatial and intensity information from second color pixels. This parameter change enables first color pixels to effectively represent the combined information that would normally require both first and second color pixels, thereby maintaining resolution while reducing blue light exposure.
Data Source
AI summary
A display device includes a signal receiver, a signal generator, and a signal corrector. The signal receiver receives an image signal. The signal generator generates a data signal for each of a first color pixel and a second color pixel based on the image signal. The signal corrector generates corrected data for the first color pixel based on the data signal for the second color pixel in a single driving mode. The first color pixel and the second color pixel emit light of different grayscale values of a same color. The first color pixel is driven and the second color pixel is not driven in the single driving mode.