AMOLED Display Panel Blue Sub-Pixel Wavelength Segmentation
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Solution Overview
Problem
AMOLED display panels fail to effectively protect eye health due to high blue ray energy emission, which can cause retinal damage and vision loss over time.
Innovation Solution
The AMOLED display panel employs blue sub-pixels with different emissive peak wavelengths in odd and even columns, with one peak wavelength range from 430 nm to 445 nm and the other from 450 nm to 465 nm, and a driving method that adjusts the display of these sub-pixels based on blue ray saturation thresholds to reduce overall blue ray energy exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If blue sub-pixels with short wavelength (430-445 nm) are used to achieve high luminance and color accuracy, then display quality is improved, but blue ray energy emission increases causing retinal damage
Solution Approach 1:
The patent divides the blue sub-pixel population into two groups based on wavelength characteristics: short wavelength blue sub-pixels (430-445 nm) and long wavelength blue sub-pixels (450-465 nm). This segmentation allows selective driving of different wavelength groups to balance display quality and eye protection, resolving the contradiction between luminance and blue ray energy emission.
Solution Approach 2:
The patent implements dynamic control by adjusting the driving status of blue sub-pixels based on real-time detection of blue ray saturation. When blue ray saturation exceeds the threshold, the system dynamically switches from driving all blue sub-pixels to driving only long wavelength blue sub-pixels, creating a dynamic adaptation mechanism that resolves the luminance-quality versus eye protection contradiction.
2Illumination intensity
If all blue sub-pixels are driven simultaneously to maintain display brightness, then luminance is maintained, but blue ray saturation increases causing health hazards
Solution Approach 1:
The patent incorporates a feedback mechanism where the driving status of blue sub-pixels is adjusted based on detected blue ray saturation levels. When blue ray saturation exceeds the threshold, the system feedback-controls the switching between driving all blue sub-pixels and driving only long wavelength blue sub-pixels, thereby dynamically maintaining brightness while controlling blue ray saturation to protect eye health.
3Object-affected harmful factors
If blue sub-pixels with longer wavelength (450-465 nm) are used exclusively, then blue ray energy is reduced for eye protection, but luminance and color accuracy deteriorate
Solution Approach 1:
The patent implements dynamic control by adjusting the driving status of blue sub-pixels based on real-time detection of blue ray saturation. When blue ray saturation exceeds the threshold, the system dynamically switches from driving all blue sub-pixels to driving only long wavelength blue sub-pixels, creating a dynamic adaptation mechanism that resolves the luminance versus eye protection contradiction.
Solution Approach 2:
The patent changes the operational parameters of blue sub-pixels by switching between two wavelength groups (short wavelength 430-445 nm and long wavelength 450-465 nm). This parameter change allows the system to adjust blue ray energy emission while maintaining acceptable luminance through selective activation of appropriate wavelength groups.
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 effectively reduces blue ray energy in displayed images, providing an eye protection function by selectively driving blue sub-pixels with lower energy emission when blue ray saturation exceeds a threshold, thereby minimizing retinal damage.
Implementation Method 1
When a current flows through the OLED, organic material may emitting light
Data Source
AI summary
The present disclosure discloses an AMOLED display panel, a driving method thereof, and a driving device thereof. The AMOLED display panel includes a plurality of pixel structures arranged in a matrix, and each of the pixel structures includes at least one red sub-pixel R, at least one green sub-pixel, and at least one blue sub-pixel. The blue sub-pixels of the pixel structures arranged in odd columns respectively have a first emissive peak wavelength, and the blue sub-pixels of the pixel structures arranged in even columns respectively have a second emissive peak wavelength. The first emissive peak wavelength is greater than the second emissive peak wavelength.