Backlight Optical Component With Bubble Film for Uniform Light Distribution

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

The luminous angle of the light source in the backlight module is typically 120°, with optical energy concentrated mainly in the front, leading to issues like light spots, filaments between lamp strips, and dark corners due to uneven optical energy distribution.

Innovation Solution

An optical component with a lens body, light distribution film featuring bubble structures, and a light source, where the light distribution film is designed with a thickness that decreases from the center to the edge, and bubble structures are used to reflect and refract optical energy for even distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If traditional optical lens with curvature changes is used to control light path, then the lens structure is simple, but the optical energy cannot be fully dispersed and remains concentrated on the front

Engineering Contradiction:

Improveoptical energy distributionVSAvoidlens structure complexity

Core Design Contradiction:

Illumination intensityVSDevice complexity

Solution Approach 1:

The patent combines a light distribution film with bubble structures and a lens body to create a composite optical component. The light distribution film is made of transparent material with embedded bubbles having different refractive indices, forming a composite structure that enhances light scattering and dispersion capabilities beyond what a simple lens can achieve.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The light distribution film contains bubble structures that create a porous-like internal architecture. These bubbles act as scattering centers that redirect light paths, effectively dispersing concentrated optical energy without requiring complex external lens systems.

Inventive Principle:

Principle #31Porous materials

2Ease of manufacture

If light source emits 120° luminous angle with concentrated optical energy, then the light source structure is simple, but it causes light spots, filaments between lamp strips, and dark corners

Engineering Contradiction:

Improvelight source structure simplicityVSAvoiduniformity of optical energy distribution

Core Design Contradiction:

Ease of manufactureVSIllumination intensity

Solution Approach 1:

The light distribution film acts as an intermediary between the simple light source and the final illumination field. It contains bubble structures that mediate the light path by scattering and redistributing optical energy, transforming the concentrated emission into uniform illumination without modifying the light source itself.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The bubble structures are distributed throughout the light distribution film with varying positions and densities. This creates local variations in refractive index that collectively achieve uniform light distribution, with each bubble contributing to scattering light in specific directions to eliminate dark corners and light spots.

Inventive Principle:

Principle #3Local quality

3Illumination intensity

If optical energy is strongly concentrated on the front, then the forward illumination is strong, but the side illumination is weak and dispersed

Engineering Contradiction:

Improveforward illumination strengthVSAvoidside illumination adequacy

Core Design Contradiction:

Illumination intensityVSEase of operation

Solution Approach 1:

The bubble structures within the light distribution film introduce additional light path dimensions by scattering light in multiple directions including sideways. This transforms the primarily forward-directed light into a three-dimensionally distributed illumination pattern, strengthening side illumination while preserving forward brightness.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

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 effectively controls and redistributes optical energy, reducing light spots and uneven illumination, facilitating ultra-thin designs and cost reduction in display apparatus.

Implementation Method 1

Part of the optical energy entering the light distribution film can be reflected and refracted on the critical surface of the bubble structure and the light distribution film

Methodology Applied

Scientific EffectReflection: Reflection

Implementation Method 2

Part of the optical energy entering the light distribution film can be reflected and refracted on the critical surface of the bubble structure and the light distribution film

Methodology Applied

Scientific EffectRefraction: Refraction

Data Source

PatentUS12468193B2Optical component, backlight module and display apparatus

Publication Date: 2025.11.11 SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD

AI summary

Disclosed are an optical component, a backlight module and a display apparatus. The optical component includes: a lens body, a light distribution film and a light source; a light-emitting surface is provided at a top of the lens body, and an accommodating groove is provided at a bottom of the lens body; the light distribution film is provided on the light-emitting surface, at least one bubble layer is formed in the light distribution film, and the bubble layer is provided with a bubble structure; the light source is provided in the accommodating groove, and a luminous surface of the light source is configured to face towards a wall of the accommodating groove.