Transparent LCD Transmittance Control via RGB Saturation
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Solution Overview
Problem
Current transparent liquid crystal displays (LCDs) lack the ability to independently control the transmittance of their transparent sub-pixels, leading to inadequate display effects as important image parts are not adequately highlighted due to uniform transmittance across all image areas.
Innovation Solution
A data processing method for transparent LCDs that calculates the grayscale value of transparent sub-pixels based on the values of red, green, and blue sub-pixels using the equation T=(f(R,G,B)−a)/a+b, allowing for real-time adjustment of transmittance according to color saturation, where f can be a function such as maximum, minimum, or average of R, G, and B, with constants a and b optimizing transmittance control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the transmittance of transparent sub-pixel is controlled uniformly across all pixels, then the device structure is simple, but the display effect is poor as important image parts cannot be highlighted
Solution Approach 1:
The patent applies local quality by making the transmittance of transparent sub-pixels spatially variable rather than uniform. The grayscale value of each transparent sub-pixel is independently controlled based on its position and the local image characteristics (color saturation of RGB sub-pixels), allowing different regions of the display to have different transmittance properties optimized for their specific function
Solution Approach 2:
The patent implements dynamic control of transparent sub-pixel transmittance by calculating grayscale values in real-time based on the color saturation of corresponding RGB sub-pixels. This dynamic adjustment allows the display to adapt transmittance characteristics to the displayed content, highlighting important regions while maintaining visibility in less important areas
2Manufacturing precision
If the transmittance of transparent sub-pixel is adjusted independently for each pixel, then the display effect is improved, but the control complexity increases
Solution Approach 1:
The patent applies self-service by enabling each transparent sub-pixel to automatically determine its own grayscale value based on the color saturation of its corresponding RGB sub-pixels. The system uses local image information (R, G, B values at each pixel location) to autonomously calculate the appropriate transmittance without requiring external control signals or complex centralized control logic
Solution Approach 2:
The patent implements feedback control by using the color saturation information of RGB sub-pixels as input to determine the grayscale value of transparent sub-pixels. The system continuously monitors the displayed image content and adjusts transmittance accordingly, creating a closed-loop control mechanism that optimizes display效果 based on actual image characteristics
3Illumination intensity
If higher grayscale values are assigned to transparent sub-pixel, then the transmittance increases for better background visibility, but the display content becomes less prominent
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the grayscale value parameter of transparent sub-pixels based on local image characteristics. Instead of using a fixed grayscale value, the system varies the grayscale parameter according to the color saturation of corresponding RGB sub-pixels, thereby optimizing the balance between background visibility and display content prominence for each local region
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 method enables real-time adjustment of transmittance, enhancing the display quality by varying transmittance based on color saturation, ensuring that unimportant image parts have higher transmittance while important parts have lower, thus improving the overall display effect.
Implementation Method 1
the rotation of the liquid crystal (LC) corresponding to the transparent sub-pixel must be controlled independently
Data Source
AI summary
The invention provides a data processing method for transparent LCD; which computes the grayscale value of the transparent sub-pixel based on the grayscale values of the red, green and blue sub-pixels of each display pixel. As such, the present invention realizes the real time adjustment of the transmittance of the transparent sub-pixel of the transparent LCD and effectively improves the display quality of the transparent LCD.