Vehicle Pop-Up Display Rack-and-Pinion Layout for Clear Front View

Solution Overview

Problem

The increasing size of vehicle displays obstructs the front view and may become unnecessary during autonomous driving, necessitating a display device that minimizes height and adjusts size for unobstructed visibility.

Innovation Solution

A display device with a display panel that retracts and extends vertically, utilizing a driver mechanism comprising a motor, pinion gears, and a rack gear system to minimize the length of the rack gear, allowing the display to adjust its size and maintain a slim appearance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the display size is increased to provide more information, then the information output capability is improved, but the front view obstruction increases

Engineering Contradiction:

Improvedisplay areaVSAvoidfront view obstruction

Core Design Contradiction:

Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The display device transitions from a static fixed-size display to a dynamic adjustable-size display that can switch between extended and retracted states. The driver mechanism enables the display to dynamically change its position and visible area, allowing the system to adapt between providing maximum information display and minimizing front view obstruction based on driving conditions.

Inventive Principle:

Principle #15Dynamics

2Object-affected harmful factors

If the display is retracted to minimize height, then the front view is improved, but the information display capability is reduced

Engineering Contradiction:

Improvefront view obstructionVSAvoiddisplay area

Core Design Contradiction:

Object-affected harmful factorsVSArea of stationary object

Solution Approach 1:

The display device transitions from a static fixed-size display to a dynamic adjustable-size display that can switch between extended and retracted states. The driver mechanism enables the display to dynamically change its position and visible area, allowing the system to adapt between providing maximum information display and minimizing front view obstruction based on driving conditions.

Inventive Principle:

Principle #15Dynamics

3Device complexity

If a single pinion gear is used, then the device complexity is reduced, but the rack gear length increases

Engineering Contradiction:

Improvegear module complexityVSAvoidrack gear length

Core Design Contradiction:

Device complexityVSLength of stationary object

Solution Approach 1:

The single pinion gear is segmented into multiple pinion gears (first pinion gear and second pinion gear) that are distributed along the rack gear. This segmentation allows the rack gear to be shorter because the rotational motion is applied at multiple points along its length, rather than requiring a single long engagement point. The multiple pinion gears work together to achieve the same rotational effect with a more compact rack gear configuration.

Inventive Principle:

Principle #1Segmentation

4Length of stationary object

If the rack gear length is reduced, then the device complexity is reduced, but the stroke length becomes insufficient

Engineering Contradiction:

Improverack gear lengthVSAvoiddisplay panel stroke

Core Design Contradiction:

Length of stationary objectVSLength of moving object

Solution Approach 1:

The single pinion gear is segmented into multiple pinion gears (first pinion gear and second pinion gear) that are distributed along the rack gear. This segmentation allows the rack gear to be shorter because the rotational motion is applied at multiple points along its length, rather than requiring a single long engagement point. The multiple pinion gears work together to achieve the same rotational effect with a more compact rack gear configuration.

Inventive Principle:

Principle #1Segmentation

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 reduces the height of the display device, ensuring an unobstructed front view and providing a larger screen when needed, enhancing user experience and design aesthetics.

Implementation Method 1

a motor configured to provide rotational power

Methodology Applied

Scientific EffectElectromagnetic conversion: Electromagnetic Induction

Implementation Method 2

a pinion gear module configured to rotate by receiving the rotational power from the motor and comprising a first pinion gear and a second pinion gear arranged parallel in the vertical direction; and a rack gear located at the rear side of the display panel, extending in the vertical direction, and maintaining engagement with at least one of the first pinion gear or the second pinion gear

Methodology Applied

Scientific EffectGear mechanism: Rack and Pinion

Data Source

PatentUS20250343461A1Pop-up display device and vehicle

Publication Date: 2025.11.06 LG ELECTRONICS INC

AI summary

Provided is a display device comprising: a display panel outputting an image on the front thereof; and a drive unit coupled to the back of the display panel and moving the display panel in the vertical direction, wherein the drive unit comprises: a motor providing rotational force; a pinion gear module which rotates by means of receiving the rotational force of the motor and which includes a first pinion gear and a second pinion gear arranged side by side in the vertical direction; and a rack gear located on the back of the display panel, extending in the vertical direction, and maintaining engagement with at least one of the first pinion gear or the second pinion gear.