Reflective Layer in Liquid Crystal Panel Non-Display Region
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Solution Overview
Problem
Conventional liquid crystal displays have a low light utilization ratio due to the low reflective ratio of gate lines, data lines, and TFTs in the non-display regions, which results in inefficient use of backlight module light.
Innovation Solution
Incorporating a reflective layer made of high reflective materials like aluminum or silver on the surface of the second substrate assembly corresponding to the non-display region, reflecting light back to the backlight module for re-utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a reflective layer is added to the non-display region, then light utilization ratio is improved, but device complexity increases
Solution Approach 1:
The reflective layer is selectively applied only to the non-display region of the liquid crystal panel, not the entire surface. This localized application improves light utilization in the specific area where light would otherwise be wasted, while minimizing the increase in overall device complexity and material usage.
Solution Approach 2:
The reflective layer converts the harmful effect of light absorption in the non-display region into a beneficial effect by reflecting that light back toward the display region. The light that would have been absorbed by the black matrix and circuit structures is now reused, improving overall light efficiency without requiring additional backlight power.
2Use of energy by moving object
If a reflective layer is added to the non-display region, then light utilization ratio is improved, but manufacturing complexity increases
Solution Approach 1:
The reflective layer is applied only to the non-display region, which simplifies the manufacturing process compared to coating the entire panel. This localized approach reduces material costs and allows for more straightforward integration into existing liquid crystal panel manufacturing workflows.
3Illumination intensity
If the black matrix absorbs light in the non-display region, then display contrast is improved, but light utilization ratio deteriorates
Solution Approach 1:
The solution segments the panel into display and non-display regions, applying different optical treatments to each. The black matrix remains in the display region to maintain contrast, while the reflective layer is applied to the non-display region to improve light utilization, allowing both requirements to be satisfied simultaneously in their respective zones.
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 reflective layer increases the light utilization ratio by reflecting light from the non-display region back to the backlight module, enhancing the overall efficiency of light usage in the liquid crystal display.
Implementation Method 1
a reflective layer provided on a surface of the second transparent substrate 431 facing toward the first transparent substrate 411... The reflective layer is positioned corresponding to the non-display region... reflecting light back to the backlight module for re-utilization
Data Source
AI summary
An exemplary liquid crystal panel includes a first substrate assembly, a second substrate assembly parallel to the first substrate assembly, and a liquid crystal layer sandwiched between the first substrate assembly and the second substrate assembly. The second substrate assembly includes a transparent substrate and a reflective layer provided on a surface of the transparent substrate facing the first substrate assembly. The liquid crystal panel includes a display region and a non-display region. The reflective layer is positioned corresponding to the non-display region.