Display Panel Light-Blocking Film for Bezel and Leakage Reduction

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing display devices suffer from light leakage from the rear and side surfaces, and have limitations in reducing bezel width and module thickness, with potential fabrication defects.

Innovation Solution

A display device structure incorporating a light-blocking member that extends along the rear and side surfaces of the display panel, attached to a film member, using a colored light-blocking film to prevent light leakage and simplify the fabrication process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a light-blocking member is added to prevent light leakage, then light leakage is reduced, but device complexity increases

Engineering Contradiction:

Improvelight leakageVSAvoidstructure complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The light-blocking member integrates multiple functions: it blocks light leakage from the rear surface, extends along side portions to prevent lateral light leakage, and attaches to the film member to provide structural support. This merging of functions into a single component prevents light leakage without proportionally increasing device complexity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The light-blocking member serves multiple purposes simultaneously: optical isolation (blocking light leakage), structural support (attached to film member), and lateral confinement (extending along side portions). This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Object-affected harmful factors

If the light-blocking member extends along side portions, then light leakage is prevented, but manufacturing precision requirements increase

Engineering Contradiction:

Improvelight leakageVSAvoidalignment precision

Core Design Contradiction:

Object-affected harmful factorsVSManufacturing precision

Solution Approach 1:

The light-blocking member is configured to be attached to the film member, which serves as a self-aligning reference structure. The extension along side portions is designed to work with the natural geometry of the display panel and film member, allowing the component to self-align during assembly without requiring high-precision external alignment processes.

Inventive Principle:

Principle #25Self-service

3Stability of the object's composition

If the light-blocking member is attached to the film member, then structural stability is improved, but device thickness increases

Engineering Contradiction:

Improvestructural stabilityVSAvoidmodule thickness

Core Design Contradiction:

Stability of the object's compositionVSLength of stationary object

Solution Approach 1:

The light-blocking member is implemented as a thin film or sheet structure that can be attached to the film member. This thin-film approach provides the necessary structural stability and light-blocking functionality while minimizing the increase in module thickness, as the light-blocking member adds minimal thickness compared to rigid structural components.

Inventive Principle:

Principle #30Flexible shells and thin films

Data Source

PatentUS12588400B2Display device

Publication Date: 2026.03.24 LG DISPLAY CO LTD

AI summary

A display device includes a light-blocking film on the entire rear surface of a display panel, extending along side portions of the display panel, and attached to a film member on the entire front surface of the display panel. The light-blocking film is configured to prevent light leakage occurring from the rear surface and side surfaces of the display panel.