Through-Hole Display Panel Shielding Against Light Leakage

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Solution Overview

Problem

Display devices with through-holes suffer from light leakage and foreign material ingress, which degrade display performance and reliability.

Innovation Solution

A display device design that includes a light shielding member around the through-hole to block light leakage and a filling member to prevent foreign material entry, enhancing reliability and display quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If a through-hole is disposed in the display panel to reduce bezel area and maximize display area, then the display area is increased, but light leakage occurs through the through-hole

Engineering Contradiction:

Improvedisplay areaVSAvoidlight leakage

Core Design Contradiction:

Area of stationary objectVSObject-generated harmful factors

Solution Approach 1:

A light shielding member is introduced as an intermediary component between the display panel and the cover member, positioned to block light leakage paths around the through-hole while allowing the through-hole to remain open for optical device insertion

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The light shielding member is selectively positioned only in the region surrounding the through-hole, providing light blocking function locally where needed without affecting the overall transparency or display area of the panel

Inventive Principle:

Principle #3Local quality

2Area of stationary object

If a through-hole is disposed in the display panel to reduce bezel area, then the bezel area is reduced, but foreign materials such as dust or moisture can enter through the through-hole

Engineering Contradiction:

Improvebezel areaVSAvoidprotection against foreign materials

Core Design Contradiction:

Area of stationary objectVSReliability

Solution Approach 1:

A filling member is introduced as an intermediary substance that fills the gap between the optical device and the cover member, sealing the through-hole region to prevent foreign materials from entering while allowing the through-hole to remain open for device insertion

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The filling member acts as a flexible sealing element that can adapt to the through-hole geometry and provide effective sealing against dust and moisture ingress

Inventive Principle:

Principle #30Flexible shells and thin films

3Reliability

If a light shielding member and filling member are added to suppress light leakage and foreign material ingress, then reliability is improved, but device complexity increases

Engineering Contradiction:

Improvedisplay performance and reliabilityVSAvoidnumber of components

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The light shielding member and filling member are integrated into a single assembly structure that is installed together as one unit, reducing the number of separate installation steps and simplifying the manufacturing process despite adding functional components

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20260076082A1Display device

Publication Date: 2026.03.12 LG DISPLAY CO LTD

AI summary

A display device in one example includes a display panel which includes a display area, an optical area which is enclosed by the display area and includes a through-hole, and a non-display area which encloses the display area. The display device can further include a cover member on the display panel, a support member disposed below the display panel, a light shielding member disposed below the support member, and an optical device inserted into the through-hole. The filling member is filled between the optical device and the cover member. Accordingly, light leakage which can be generated through the through-hole can be suppressed or prevented by the light shielding member.