Reflective Shading Layer for LCD Brightness
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Solution Overview
Problem
In TFT-LCD apparatuses, the borderless design reverses the positions of the TFT and color filter substrates, causing the shading layer to fail in preventing background light leakage, which results in reduced brightness.
Innovation Solution
The implementation of a shading layer with a light reflecting layer on specific surfaces of the color filter substrate, which reflects light rays back through a light guide plate, improving light utilization and panel brightness, and optionally incorporating convex or concave protrusions for enhanced reflection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the TFT substrate is placed in front and the CF substrate is placed behind (borderless design), then the bezel area is reduced and the display area is increased, but the shading layer cannot prevent background light leakage and the brightness is reduced
Solution Approach 1:
The invention converts the harmful effect of background light leakage into a beneficial effect by adding a light reflecting layer to the shading layer. This layer reflects the leaked background light back through the light guide plate, turning the previously harmful light leakage into useful light that contributes to panel brightness, thereby resolving the contradiction between increased display area and reduced brightness
Solution Approach 2:
The invention changes the optical parameter of the shading layer by adding a light reflecting layer with specific reflectivity characteristics. This parameter change enables the shading layer to not only block light but also reflect it back, improving the overall light utilization efficiency and brightness without compromising the borderless design
2Illumination intensity
If a light reflecting layer is added to the shading layer, then light reflection and brightness are improved, but the device complexity increases
Solution Approach 1:
The invention merges the light reflecting layer with the existing shading layer structure, making the shading layer serve dual functions: light blocking and light reflection. This integration approach improves brightness without significantly increasing device complexity, as the added functional layer is combined with an existing component rather than adding a separate independent structure
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 configuration effectively enhances light reflection and brightness by directing and reflecting light rays more efficiently, addressing the issue of background light leakage and improving image quality.
Implementation Method 1
the shading layer includes a light reflecting layer disposed on surfaces of the shading layer, and when the light rays is irradiated to the light reflecting layer, the light reflecting layer reflects the light rays
Data Source
AI summary
The present application provides a liquid crystal display panel and a liquid crystal display apparatus. The liquid crystal display panel is used in the liquid crystal display apparatus, and the liquid crystal display panel includes a color filter substrate including a substrate, a shading layer disposed on the substrate, and a color filter layer. The shading layer is configured to reflect light rays, and when the light rays are irradiated to the shading layer, the shading layer reflects the light rays. The color filter layer is disposed on the substrate and is spaced by the shading layer.