Luminance Adjustment Subpixel for Display Visibility
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Solution Overview
Problem
Display devices struggle to adjust luminance and saturation effectively in response to varying external light illuminance, impacting image visibility.
Innovation Solution
A display device with a two-dimensional matrix of pixels, including additive mixture subpixels and a luminance adjustment subpixel, controlled by a signal unit that adjusts the maximum gray scale based on external light illuminance, using a photo sensor and signal control circuit to regulate voltage and maintain optimal image visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If external light illuminance decreases, then luminance of displayed image decreases, but image visibility deteriorates
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the luminance of the white subpixel based on external light illuminance conditions. When external light illuminance decreases, the luminance of the white subpixel is increased to compensate for the reduced overall image luminance, thereby maintaining image visibility. This is achieved by modifying the drive voltage or signal intensity to the white subpixel in response to detected ambient light levels.
2Illumination intensity
If external light illuminance is sufficiently high, then adequate luminance of displayed image can be obtained, but saturation may be compromised
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the luminance of the white subpixel based on external light illuminance conditions. When external light illuminance decreases, the luminance of the white subpixel is increased to compensate for the reduced overall image luminance, thereby maintaining image visibility. This is achieved by modifying the drive voltage or signal intensity to the white subpixel in response to detected ambient light levels.
3Reliability
If luminance at maximum gray scale in luminance adjustment subpixel is increased, then visibility in dark environments improves, but saturation in bright environments deteriorates
Solution Approach 1:
The patent applies dynamics by making the luminance of the white subpixel dynamically adjustable based on external light illuminance conditions. Rather than using a fixed luminance setting, the system continuously adapts the white subpixel's luminance output to match the ambient lighting conditions, thereby optimizing both visibility in dark environments and saturation preservation in bright environments.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting the luminance of the white subpixel based on external light illuminance conditions. When external light illuminance decreases, the luminance of the white subpixel is increased to compensate for the reduced overall image luminance, thereby maintaining image visibility. This is achieved by modifying the drive voltage or signal intensity to the white subpixel in response to detected ambient light levels.
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
The solution allows for dynamic adjustment of luminance and saturation in response to light conditions, ensuring high visibility and image quality in both bright and dark environments.
Implementation Method 1
using a photo sensor and signal control circuit to regulate voltage
Data Source
AI summary
A display device is provided. The display device includes a display unit having pixels arranged in a two-dimensional matrix, each pixel including additive mixture subpixels and a luminance adjustment subpixel, and a signal control unit controlling a luminance at a maximum gray scale in the luminance adjustment subpixel depending on an external light illuminance.