Micro-LED Display Panel Optics for Redirecting Lateral Light

Solution Overview

Problem

Micro-LED display panels suffer from low light utilization due to the emission of 360° light beams, where only forward beams contribute to the display, while lateral and other angle beams are not utilized, leading to reduced display effects and increased power consumption.

Innovation Solution

Incorporating a light reflecting part between adjacent micro-LEDs and a light adjusting part with a protruding surface to reflect and converge lateral beams into forward beams, enhancing light utilization by converting lateral beams into forward beams.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If Micro-LEDs emit 360° light beams, then the light emission coverage is improved, but the light utilization efficiency deteriorates because only forward beams contribute to display while lateral beams are wasted

Engineering Contradiction:

Improvelight emission coverageVSAvoidlight utilization efficiency

Core Design Contradiction:

Illumination intensityVSLoss of energy

Solution Approach 1:

The patent converts the harmful wasted lateral light beams into beneficial forward-directed light by introducing light reflecting parts between adjacent Micro-LEDs and light adjusting parts above the Micro-LEDs. The reflecting parts bounce lateral light upward, and the adjusting parts (with protruding surfaces) refract and redirect this light into forward beams that contribute to display, thereby converting energy loss into useful illumination.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent introduces intermediary structures (light reflecting parts and light adjusting parts) between the Micro-LEDs and the display medium. These intermediaries capture lateral light beams, reflect them upward, and then refract them into forward directions, serving as mediators that transform unusable lateral light into useful forward light for display purposes.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Device complexity

If lateral beams are not utilized, then the device structure is simple, but the display effect deteriorates and power consumption increases

Engineering Contradiction:

Improvestructure simplicityVSAvoiddisplay effect

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent converts the harmful wasted lateral light beams into beneficial forward-directed light by introducing light reflecting parts between adjacent Micro-LEDs and light adjusting parts above the Micro-LEDs. The reflecting parts bounce lateral light upward, and the adjusting parts (with protruding surfaces) refract and redirect this light into forward beams that contribute to display, thereby converting energy loss into useful illumination.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Ease of manufacture

If lateral beams are not utilized, then the manufacturing process is simple, but the power consumption increases

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoidpower consumption

Core Design Contradiction:

Ease of manufactureVSUse of energy by moving object

Solution Approach 1:

The patent converts the harmful wasted lateral light beams into beneficial forward-directed light by introducing light reflecting parts between adjacent Micro-LEDs and light adjusting parts above the Micro-LEDs. The reflecting parts bounce lateral light upward, and the adjusting parts (with protruding surfaces) refract and redirect this light into forward beams that contribute to display, thereby converting energy loss into useful illumination.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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

Improves light utilization and display effects by effectively redirecting and combining lateral beams into forward beams, thereby increasing the efficiency and reducing power consumption.

Implementation Method 1

a light reflecting part, and a light adjusting part. The light-emitting devices are spaced on one side of the substrate. The light reflecting part is at least partially located between adjacent light-emitting devices

Methodology Applied

Scientific EffectLight reflection: Reflection

Implementation Method 2

The light adjusting part is arranged on one side of the light-emitting devices away from the substrate. The light adjusting part includes a first surface away from the substrate, and the first surface protrudes away from the substrate

Methodology Applied

Scientific EffectLight refraction: Refraction

Data Source

PatentUS20240321838A1Display panel, display device, and method for manufacturing display panel

Publication Date: 2024.09.26 TIANMA ADVANCED DISPLAY TECH INST (XIAMEN) CO LTD

AI summary

A display panel, a display device, and a method for manufacturing the display panel are provided. The display panel includes a substrate, light-emitting devices, a light reflecting part, and a light adjusting part. The light-emitting devices are spaced on one side of the substrate. The light reflecting part is at least partially located between adjacent light-emitting devices. The light adjusting part is arranged on one side of the light-emitting devices away from the substrate, and an orthographic projection of the light adjusting part on the substrate overlaps an orthographic projection of the corresponding light-emitting devices on the substrate. The light adjusting part includes a first surface away from the substrate, and the first surface protrudes away from the substrate. The light reflecting part and the light adjusting part can cooperate with each other to convert at least some of lateral beams into the forward beams.