LED Display Panel Baffle Light Shielding Structure
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Solution Overview
Problem
LCD and LED splicing screens differ in light-emitting principles and viewing angle performance, leading to uneven brightness when viewed from the side, affecting the overall look and feel of displays.
Innovation Solution
An LED display panel with a light shielding structure featuring baffles that form cavities around LED chips, adjusting viewing angles by blocking side-emitted light, and using ink jetting to create baffles with specific parameters for optimal light emission and temperature resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If LED chips are used in splicing screens, then high-end display performance is achieved, but viewing angle performance deteriorates causing large brightness when viewed from the side
Solution Approach 1:
A light shielding structure comprising multiple baffles is introduced as an intermediary element between the LED chip and the external environment. These baffles selectively block oblique light rays while permitting normal light emission, thereby mediating the contradiction between maintaining high display performance and improving viewing angle characteristics
Solution Approach 2:
The light shielding structure implements local quality control by positioning baffles at specific locations around the LED chip. The baffles are strategically placed to block light in specific directional ranges (side viewing angles) while leaving other directions (front viewing angles) unaffected, thus achieving localized light control to resolve the viewing angle issue without compromising overall display performance
2Ease of operation
If light shielding structures with baffles are added to control viewing angles, then viewing angle performance is improved, but device complexity increases
Solution Approach 1:
The light shielding structure utilizes thin baffle elements that are flexible in design but simple in implementation. These thin film-like baffles can be easily integrated into the existing LED module structure without requiring complex mechanical assemblies, thus improving viewing angle performance while minimizing the increase in device complexity
Solution Approach 2:
The light shielding function is segmented into multiple independent baffles rather than using a single complex shielding component. This segmentation allows each baffle to be independently designed and positioned to control specific angular ranges, simplifying the overall structure while achieving comprehensive viewing angle control
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
Uniformizes viewing angles across different display types, enhancing display quality and user experience without increasing panel thickness or altering brightness curves.
Implementation Method 1
Part of light emitted by the LED chip in a side view direction is blocked by the baffle
Implementation Method 2
the light shielding structure is formed by ink jetting
Data Source
AI summary
An LED display panel and a display device are provided. The LED display panel includes at least one LED package module. The LED package module includes: a substrate; an electrode unit disposed on the substrate, the electrode unit comprising an anode layer and a cathode layer disposed opposite to the anode layer; at least one LED chip disposed on the anode layer and the cathode layer; a light shielding structure disposed on the substrate, wherein the light shielding structure comprises a plurality of baffles, the baffles are surrounded to form at least one cavity, and the LED chip is disposed in the cavity; a sealing glue layer disposed on the substrate.