Display Panel Light Reflective Layer Brightness
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Solution Overview
Problem
Conventional micro LED display panels suffer from reduced brightness and luminescent efficiency due to light emitted from LEDs being partially absorbed by black matrices, which are used to block light leakage.
Innovation Solution
Incorporating a light reflective layer on or beside the black matrix layers to reflect light emitted from the luminescent layer, preventing absorption and increasing light utilization, with specific thickness and material options for the reflective and black matrix layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If black matrix layers are used to block light leakage between RGB photoresists, then light leakage is prevented and contrast is improved, but light emitted from LEDs is partially absorbed by the black matrices, reducing brightness and luminescent efficiency
Solution Approach 1:
The patent converts the harmful light absorption function of the black matrix into a beneficial light reflection function by introducing a reflective layer. The reflective layer, positioned adjacent to the black matrix layer, captures light that would otherwise be absorbed and redirects it toward the display surface, transforming the black matrix from a light-consuming element into a light-managing structure that prevents leakage while enhancing brightness through reflected light utilization
Solution Approach 2:
The reflective layer acts as an intermediary between the black matrix layer and the light emission source. It is positioned in the space between the substrate and the black matrix, serving as a mediating structure that intercepts light before it reaches the black matrix, reflects it upward, and allows it to contribute to the display output rather than being absorbed and lost
2Object-affected harmful factors
If black matrix layers are used to block light leakage, then contrast is improved, but light utilization rate decreases due to absorption by black matrices
Solution Approach 1:
The patent transforms the energy loss through absorption into energy utilization through reflection. The reflective layer captures photons that would be absorbed by the black matrix and redirects them toward the viewing direction, converting what was previously wasted energy into useful light output that contributes to display brightness and overall light utilization efficiency
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 enhances brightness and luminescent efficiency by reflecting light to upper layers, reducing absorption by the black matrix layers and improving overall light utilization.
Implementation Method 1
the light reflective layer covers lateral sides of the black matrix layer... light emitted from the luminescent layer to the black matrix layer can be continuously utilized. Meanwhile, light emitted from the luminescent layer can be prevented from being absorbed by the black matrix layer
Data Source
AI summary
The disclosure provides a display panel, including a substrate layer, a luminescent layer, and a plurality of composite black matrix layers. The luminescent layer is disposed on the substrate layer, the composite black matrix layers are disposed beside two sides of the luminescent layer and are disposed on the substrate layer, and the composite black matrix layers comprise a black matrix layer and a light reflective layer.