General-Purposed LCD Panel with Segmented Color Filter
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Solution Overview
Problem
Conventional liquid crystal display (LCD) panels face challenges in achieving high luminance and chromatics while minimizing power consumption, particularly in laptop computers, where reducing color filter film thickness complicates manufacturing and diminishes color quality, and in desktop computers, where high luminance backlights are not necessary, leading to different design requirements for the same LCD panel size.
Innovation Solution
A general-purpose LCD panel design featuring a first substrate with thin film transistors and a second substrate with color filter films that include transparent regions free of color filter, allowing white light to reach users without passing through the color filter, thereby increasing luminance without affecting chromatics, and using shielding regions on the TFT substrate for desktop applications to meet chromatic requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the thickness of color filter films is reduced to increase luminance, then luminance is improved, but chromatics diminish and manufacturing complexity increases
Solution Approach 1:
The color filter film is segmented into two functional regions: a first region with standard thickness for chromatic filtering and a second region with reduced thickness for enhanced luminance. This segmentation allows each region to optimize for its specific function, resolving the contradiction between luminance and chromatics.
Solution Approach 2:
Different regions of the color filter film are assigned different thicknesses based on local functional requirements. The first region maintains standard thickness where chromatic performance is critical, while the second region uses reduced thickness where luminance enhancement is prioritized, achieving local optimization of both parameters.
2Illumination intensity
If high luminance backlight plates are used to increase luminance, then luminance is improved, but power consumption increases
Solution Approach 1:
The patent extracts the luminance enhancement function from the backlight system and relocates it to the color filter film structure itself. By reducing the thickness of the color filter film in specific regions, light absorption is minimized and luminance is enhanced without requiring additional backlight power, thus resolving the contradiction between luminance and power consumption.
3Reliability
If different designs are applied for laptop and desktop LCD panels, then application-specific performance is optimized, but device complexity and manufacturing cost increase
Solution Approach 1:
The LCD panel is designed with universal applicability by incorporating both a first region with standard thickness color filter film and a second region with reduced thickness color filter film into a single panel structure. This multi-functional design enables the same panel to serve both laptop and desktop applications, eliminating the need for separate designs and reducing overall complexity.
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 enhances luminance in laptop computers without increasing power consumption and maintains chromatic quality, while allowing the same LCD panel to be applicable to both laptop and desktop computers, achieving uniform white light and improved color fidelity without additional power usage.
Implementation Method 1
transparent regions free of color filter thereon... allowing white light to reach users without passing through the color filter
Data Source
AI summary
Transparent regions are allocated on the color filter regions to promote luminance of LCD devices. Shielding regions are allocated on the pixels regions of TFT substrate corresponding to the transparent regions to promote chromatics. These two designs can be adapted to both display devices for laptop computers with high luminance requirement and desktop computers with pure chromatics requirement.