Color Filter Substrate Color-Resist Layout for White-Point Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Color filter substrates in display devices experience a shift in the preset white point due to light emission changes through material layers, affecting display quality.
Innovation Solution
A color filter substrate design with distinct color resists in specific pixel regions, including a third color resist in multiple sub-pixel regions, mitigates the yellow shift of the white point by adjusting the b* value and improving optical transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If light passes through material layers in the display device, then the display function is achieved, but the white point shifts yellow and display quality deteriorates
Solution Approach 1:
The patent applies local quality by differentiating the color resist structure across different sub-pixel regions. Specifically, the third color resist is selectively disposed in at least one of the first or second sub-pixel regions, creating localized optical compensation zones that address the yellow shift problem in specific areas without affecting the entire display uniformity.
Solution Approach 2:
The patent utilizes color changes by introducing a third color resist with a specific color (different from the first and second color resists) to compensate for the yellow shift. The third color resist's optical properties are specifically designed to counterbalance the yellowing effect caused by light passing through material layers, thereby restoring the white point.
2Ease of manufacture
If the color resist structure is simplified, then the manufacturing process is easier, but the ability to compensate for white point shift is reduced
Solution Approach 1:
The patent applies segmentation by dividing the color resist structure into multiple distinct color resists (first, second, and third color resists) with different colors and optical properties. Each color resist is disposed in specific sub-pixel regions, allowing independent optimization of each region's optical characteristics while maintaining overall manufacturability through standardized fabrication processes.
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 design effectively reduces the yellow shift of the white point, enhancing display quality by aligning color coordinates and maintaining luminance.
Implementation Method 1
the color resist structure includes a first color resist, a second color resist and a third color resist... the first color resist, the second color resist and the third color resist have different colors from each other... the problem of yellow shift of the white point may be mitigated
Data Source
AI summary
A color filter substrate including a substrate and a color resist structure is disclosed. The substrate has a pixel region, and the pixel region includes a first sub-pixel region, a second sub-pixel region and a third sub-pixel region. The color resist structure is disposed on the substrate, and the color resist structure includes a first color resist, a second color resist and a third color resist. The first color resist is disposed in the first sub-pixel region. The second color resist is disposed in the second sub-pixel region. A portion of the third color resist is disposed in at least one of the first sub-pixel region and the second sub-pixel region, and another portion of the third color resist is disposed in the third sub-pixel region. The first color resist, the second color resist and the third color resist have different colors from each other.