Display Protective-Sheet Openings for Sensor Misalignment

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Solution Overview

Problem

Manufacturing tolerances and inter-layer slips in multi-layer displays can cause the opening for sensor signals to shift, potentially overlapping with the sensor and degrading its performance.

Innovation Solution

The electronic device incorporates a protective sheet with an opening shape different from the sensor, minimizing overlap and preventing sensor coverage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the opening shape is made identical to the sensor shape, then the signal transmission path is optimized, but manufacturing tolerances and inter-layer slips cause the opening to overlap the sensor, degrading sensor performance

Engineering Contradiction:

Improvesensor performanceVSAvoidopening location accuracy

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The patent applies asymmetry by designing the opening shape to be different from the sensor shape. Specifically, the opening is configured with different dimensions and orientation than the rectangular sensor, creating an asymmetric relationship between the two components. This asymmetric design ensures that even with manufacturing tolerances and inter-layer slips, the opening does not completely overlap the sensor, thereby maintaining sensor performance while accommodating manufacturing variations.

Inventive Principle:

Principle #4Asymmetry

Solution Approach 2:

The patent implements beforehand cushioning by intentionally designing the opening to be larger than the sensor area it needs to expose. This extra margin acts as a buffer zone that compensates for potential misalignments due to manufacturing tolerances and inter-layer slips. The opening is configured to extend beyond the sensor boundaries in a controlled manner, providing a safety margin that prevents complete overlap and maintains signal transmission even when positioning variations occur during manufacturing.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Reliability

If the opening size is increased to accommodate tolerances, then sensor overlap is prevented, but the opening region becomes larger, potentially causing interference

Engineering Contradiction:

Improvesensor performance stabilityVSAvoidinterference from opening region

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies local quality by configuring the opening with non-uniform dimensions relative to the sensor. The opening is designed to extend beyond the sensor boundaries in specific directions while maintaining appropriate boundaries in other directions. This localized extension strategy allows the opening to accommodate tolerances in critical areas while minimizing the overall opening area to reduce potential interference with surrounding components and sensor performance.

Inventive Principle:

Principle #3Local quality

Data Source

PatentEP3926438B1Electronic device including display with opening having shape different from that of sensor

Publication Date: 2025.09.24 SAMSUNG ELECTRONICS CO LTD

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AI summary

An electronic device is disclosed. The electronic device according to various embodiments may include a housing including a first face and a second face facing the first face to construct a space, a sensor module disposed to the space and including a first sensor facing the first face, a display disposed on the sensor module, and a protective sheet disposed to one face of the display and constructing a first opening having a shape different from that of the first sensor at a location corresponding to the first sensor of the sensor module.