Light-Blocking Rib for Multi-Panel Backlight Alignment

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Solution Overview

Problem

On-vehicle display devices require flexible and fail-safe configurations for integrating multiple information displays, but existing methods lack effective solutions for precise backlight positioning and light leakage reduction in multi-panel setups.

Innovation Solution

A liquid crystal display device configuration featuring side-by-side liquid crystal display panels bonded to a front panel, with light-blocking ribs guiding the positioning of backlights to prevent light leakage and ensure precise alignment, enhancing display quality and flexibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple liquid crystal display panels are disposed side by side with multiple backlights for individual illumination, then flexibility in shape and fail-safe function are improved, but light leakage between panels occurs and backlight positioning precision deteriorates

Engineering Contradiction:

Improveflexibility in shapeVSAvoidlight leakage

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the light-blocking function into a separate structural element (the rib) that is disposed between adjacent liquid crystal display panels. This rib is specifically designed to block light from one panel from leaking into adjacent panels, thereby eliminating the harmful light leakage effect while maintaining the multi-panel flexible configuration.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The rib acts as an intermediary element between adjacent liquid crystal display panels and their respective backlights. It provides both light-blocking functionality and positioning guidance, serving as a mediator that enables precise backlight placement while preventing optical interference between neighboring display modules.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

Engineering Contradiction:

Improveflexibility in shapeVSAvoidbacklight positioning precision

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The rib is pre-positioned between adjacent liquid crystal display panels before the backlights are installed. The rib includes positioning structures such as protrusions or guide features that preliminarily establish the correct location and orientation for the backlights, ensuring precise positioning is achieved before final assembly completion.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The rib serves as an intermediary positioning fixture that mediates between the panel assembly and the backlight units. It provides physical guides and constraints that enable accurate backlight placement without requiring complex alignment procedures, thereby improving manufacturing precision in multi-panel configurations.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Device complexity

If one horizontally long liquid crystal display panel and one backlight are used, then device complexity is reduced, but flexibility in shape and fail-safe function deteriorate

Engineering Contradiction:

Improveconfiguration simplicityVSAvoidflexibility in shape

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent segments the display system into multiple independent liquid crystal display panels, each with its own backlight unit. This segmentation allows each module to be independently configured and positioned, providing flexibility in shaping the overall display according to different dashboard layouts while maintaining relatively simple individual module designs.

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 improves display quality by reducing light leakage and enabling precise backlight positioning, offering a flexible and fail-safe configuration for multi-panel on-vehicle displays.

Implementation Method 1

a light-blocking rib disposed in a gap between the first liquid crystal display panel and the second liquid crystal display panel

Methodology Applied

Scientific EffectLight blocking: Absorption (EM radiation)

Data Source

PatentUS11644703B2Liquid crystal display device comprising first and second backlights respectively opposed to first and second liquid crystal display panels that are bonded side by side to a front panel and method of assembling the same

Publication Date: 2023.05.09 SHANGHAI TIANMA MICRO ELECTRONICS CO LTD

AI summary

A liquid crystal display device includes a first liquid crystal display panel bonded to a rear face of a front panel, a second liquid crystal display panel bonded to the rear face of the front panel and located side by side with the first liquid crystal display panel, a light-blocking rib disposed in a gap between the first liquid crystal display panel and the second liquid crystal display panel, a first backlight disposed to be opposite to the first liquid crystal display panel, and a second backlight disposed to be opposite to the second liquid crystal display panel. The rib includes a first corner and a second corner. A corner of the first liquid crystal display panel and a corner of the first backlight are in contact against inside of the first corner. A corner of the second backlight is in contact against inside of the second corner.