Rotatable Display Head Locking for Stable Portrait Switching

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Solution Overview

Problem

Conventional display devices, such as smartphones and TVs, face challenges in terms of portability and convenience due to their fixed orientations and limited ability to rotate without risk of damage or unnecessary shaking.

Innovation Solution

A display device with a rotatable head that includes a processor to determine the rotation unlock condition, allowing the head to pivot between landscape and portrait modes, and featuring a mechanism to guide rotation and prevent unnecessary shaking by locking the head in place when not intended to be rotated.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the head is made rotatable to improve adaptability, then the device can switch between landscape and portrait modes, but the risk of damage increases and unnecessary shaking occurs

Engineering Contradiction:
Improverotation capabilityVSAvoiddamage risk
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The head rotation mechanism transitions from a static fixed state to a dynamic controllable state. The system dynamically adjusts between locked and unlocked states based on user interaction, allowing rotation only when intended while maintaining stability during normal operation.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The rotation control mechanism changes the rotational parameter from unrestricted to controlled. By detecting touch inputs and changing the rotational state parameter between locked and unlocked, the system enables adaptability while preventing unintended rotation and damage.

Inventive Principle:
Principle #35Parameter changes

2Stability of the object's composition

If the head is locked to prevent shaking, then device stability improves, but the ability to rotate naturally deteriorates

Engineering Contradiction:
Improvedevice stabilityVSAvoidrotation ease
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The system applies preliminary locking action to prevent unintended rotation and shaking. The locked state acts as a preventive measure against instability, while the touch-sensitive unlock mechanism provides a controlled way to override this prevention when rotation is desired.

Inventive Principle:
Principle #9Preliminary anti-action

Solution Approach 2:

The rotation control system uses feedback from touch inputs to determine whether to maintain locking or enable rotation. The processor detects user interaction and adjusts the rotational state accordingly, providing both stability during normal use and ease of rotation when needed.

Inventive Principle:
Principle #23Feedback

3Ease of operation

If automatic rotation is enabled to improve convenience, then user interaction is simplified, but the risk of unintended rotation and damage increases

Engineering Contradiction:
Improverotation convenienceVSAvoidunintended rotation
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The system requires preliminary user action (touch input) before enabling rotation. This preliminary action serves as intentional confirmation, preventing automatic unintended rotation while still providing convenient controlled rotation when the user desires it.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The touch-sensitive display area acts as an intermediary between the user and the rotation mechanism. This intermediary requires deliberate user interaction to trigger rotation, preventing direct unintended rotation while maintaining ease of operation through intuitive touch gestures.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS12234941B2Display device
Publication Date: 2025.02.25 LG ELECTRONICS INC
  • US12234941B2 patent drawing
  • US12234941B2 patent drawing
  • US12234941B2 patent drawing

AI summary

A display device according to an embodiment of the present disclosure may include a base, a stand bar extending upward from the base in a vertical direction, and a head having a display on a front side and having a pair of long sides and a pair of short sides on a peripheral portion, the head being pivotable between a landscape mode in which the long side is in a horizontal state and a portrait mode in which the long side is in a vertical state, wherein the head may include a processor configured to determine whether a rotation unlock condition of the head is satisfied, and when the rotation unlock condition of the head is satisfied, rotate the head about a rotation axis as external force is applied to the head.