Display Device Color Weakness Mode Signal Controller
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Solution Overview
Problem
Color vision defectives, such as those with protanomaly, deuteranomaly, or tritanomaly, struggle to distinguish colors due to incomplete functions of cone cells in their retina, leading to difficulties in recognizing colors displayed on conventional display devices.
Innovation Solution
A display device with a signal controller that processes input image signals to enhance the luminance of specific colors in a color weakness mode, allowing at least one color to be displayed with higher gray levels than others, and includes additional pixels or emission layers to improve color recognition without compromising overall luminance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the luminance of a specific color is enhanced for color vision defectives, then color distinguishability is improved, but the overall luminance balance deteriorates
Solution Approach 1:
The patent applies local quality by selectively enhancing the luminance of specific color subpixels (e.g., red, green, or blue) based on the type of color weakness detected. The signal controller adjusts the gray level of predetermined color subpixels independently from other subpixels, allowing localized correction for color vision defectives without affecting the overall display balance.
Solution Approach 2:
The patent changes the luminance parameter of specific color subpixels by adjusting their gray levels. The signal controller modifies the input image signal to increase the luminance of predetermined color subpixels (those corresponding to the defective cone cell type) while maintaining or reducing luminance of other subpixels, thereby compensating for color vision deficiencies through parameter transformation.
2Measurement precision
If additional pixels or emission layers are added to enhance color recognition, then color distinguishability is improved, but device complexity increases
Solution Approach 1:
The patent utilizes the time dimension by sequentially displaying different colors in time-division mode. Instead of adding spatial elements (more pixels or layers), the system displays red, green, and blue colors at different time intervals, allowing color vision defectives to perceive enhanced color information through temporal separation without increasing structural complexity.
Solution Approach 2:
The patent transforms the spatial problem of color differentiation into a temporal parameter problem. By controlling the display timing and duration of different colors, the system enables color vision defectives to distinguish colors that would otherwise be indistinguishable, achieving improved color recognition without adding physical structural elements.
Data Source
AI summary
A display device according to an exemplary embodiment of the present invention includes: a display panel including a plurality of pixels respectively displaying a first color, a second color, and a third color; and a signal controller controlling the display panel by processing an input image signal, wherein, in a color weakness mode, at least one color among the first to third colors is displayed with a higher gray than an input gray of the input image signal, and the other colors are displayed with the same gray as the input gray of the input image signal.