Multi-Panel Display Assembly for Flatness and ESD Isolation

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Solution Overview

Problem

Existing in-vehicle display devices face challenges in maintaining high dimensional precision, particularly in achieving flatness of display panels, due to large holder sizes and material limitations. Additionally, these devices are prone to electrostatic discharge issues and complex assembly processes.

Innovation Solution

The display device incorporates rear supports connected via a resin connector, with a translucent cover plate fastened to the front of the rear supports. This configuration allows for high precision in maintaining flatness and minimizes electrostatic discharge transmission between display panels. The method of production involves insert molding to form the resin connector and frame, enabling easy assembly and adjustment of display panel angles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If a large holder is used to retain multiple display panels, then the holder can accommodate more panels, but the dimensional precision and flatness of the display panels deteriorate

Engineering Contradiction:
Improvenumber of display panelsVSAvoidflatness of display panels
Core Design Contradiction:
Quantity of substanceVSManufacturing precision

Solution Approach 1:

The holder is divided into multiple holding portions, each capable of independently retaining a display panel. This segmentation allows each holding portion to maintain high dimensional precision and flatness for its respective panel, while the overall holder can accommodate multiple panels. The resin material is divided into separate regions that can be precisely formed for each panel position.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different portions of the holder are designed with locally optimized properties. Each holding portion has specific structural features tailored to support its corresponding display panel, ensuring that the local dimensional precision and flatness requirements are met for each panel while the entire holder structure can accommodate multiple panels.

Inventive Principle:
Principle #3Local quality

2Ease of manufacture

If a resin material is used for the holder, then the holder can be formed with complex shapes and good integration, but the electrostatic discharge protection deteriorates

Engineering Contradiction:
Improveintegration of holder structureVSAvoidelectrostatic discharge
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

An electrostatic discharge prevention member is introduced as an intermediary component between the resin holder and the display panels. This member acts as a mediator that provides electrostatic protection while allowing the holder to maintain its integrated resin structure. The prevention member can be a conductive or dissipative layer that safely channels static electricity away from the panels.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Quantity of substance

If multiple display panels are secured with adhesive or screws in separate holding portions, then each panel can be individually retained, but the assembly process becomes complex

Engineering Contradiction:
Improvenumber of display panelsVSAvoidassembly process
Core Design Contradiction:
Quantity of substanceVSDevice complexity

Solution Approach 1:

Multiple holding portions are merged into a single integrated holder structure made of resin. This combination allows multiple display panels to be retained in a unified structure, reducing the complexity of assembling multiple separate holders. The holder can be manufactured as one piece with multiple integrated holding regions, simplifying the overall assembly process.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The holding portions are pre-formed with built-in fastening features during the holder manufacturing process. Adhesive layers or screw mounting structures are prepared in advance as integral parts of the holder, eliminating the need for separate fastening operations for each panel. This preliminary preparation of fastening mechanisms reduces assembly complexity.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS20250199352A1Display device and method of producing display device
Publication Date: 2025.06.19 ALPS ALPINE CO LTD
  • US20250199352A1 patent drawing
  • US20250199352A1 patent drawing
  • US20250199352A1 patent drawing

AI summary

There is provided a display device that includes rear supports, a cover plate that is translucent and is fastened to a front of the rear supports, display panels disposed between the rear supports and the cover plate, and a resin connector. The rear supports are connected with one another via the resin connector. The cover plate covers the front of the rear supports, and is fastened to each of the rear supports. The display panels are disposed corresponding to the rear supports, respectively.