Array Substrate Grooves Reflect Light to Display Region
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Solution Overview
Problem
Liquid crystal display panels experience low backlight utilization and transmittance due to light leakage in non-display regions, as the black matrix layer in these areas does not effectively utilize incident light.
Innovation Solution
An array substrate is designed with grooves on the insulating layer in non-display regions, where signal lines are placed on the inner walls of these grooves to reflect incident light back into the display region, improving backlight utilization and transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a black matrix layer is formed in the non-display region to prevent light leakage, then light leakage is prevented, but backlight utilization rate and panel transmittance decrease
Solution Approach 1:
The patent converts the harmful light leakage in the non-display region into a beneficial effect by forming grooves with reflective inner walls. These grooves reflect the incident light from the backlight source back into the display region, transforming what was previously wasted light into useful illumination that improves backlight utilization rate and panel transmittance while maintaining the light leakage prevention function.
2Object-affected harmful factors
If a black matrix layer is formed in the non-display region to prevent light leakage, then light leakage is prevented, but panel transmittance decreases
Solution Approach 1:
The patent converts the harmful light leakage in the non-display region into a beneficial effect by forming grooves with reflective inner walls. These grooves reflect the incident light from the backlight source back into the display region, transforming what was previously wasted light into useful illumination that improves backlight utilization rate and panel transmittance while maintaining the light leakage prevention function.
3Reliability
If signal lines are placed in the non-display region, then electrical connectivity is achieved, but light reflection efficiency decreases
Solution Approach 1:
The patent applies local quality by forming grooves with reflective inner walls specifically in the non-display region where signal lines are located. This localized structural modification enables the signal lines to serve dual functions: maintaining electrical connectivity while simultaneously reflecting light back into the display region. The grooves are strategically positioned to maximize light reflection without interfering with the electrical function of the signal lines.
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 backlight utilization and panel transmittance by reflecting light from the non-display regions into the display area, thereby improving the overall efficiency of the liquid crystal display panel.
Implementation Method 1
a direction of the inner walls of the grooves is arranged such that at least a portion of light incident on the signal lines from a side of the first substrate facing away from the signal lines is reflected to a display region of the array substrate
Data Source
AI summary
An array substrate, a method for manufacturing the same, a liquid crystal display panel, and a display device are provided. The array substrate includes a first substrate, signal lines and an insulating layer; the insulating layer is disposed on the first substrate, and grooves are disposed on a side of the insulating layer facing away from the first substrate and disposed in a region of the insulating layer corresponding to a non-display region of the array substrate; and the signal lines are disposed on inner walls of the grooves, a direction of the inner walls of the grooves is arranged such that at least a portion of light incident on the signal lines from a side of the first substrate facing away from the signal lines is reflected to a display region of the array substrate.