Adhesive Frame Notches for Flexible Circuit Board Accommodation

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Solution Overview

Problem

Existing liquid crystal display modules face challenges in maintaining structural stability and firmness while accommodating flexible circuit boards without increasing the width of the front edge frame, which can lead to damage and instability.

Innovation Solution

The module incorporates an adhesive frame with carrying, limiting, and connecting sections, along with notches and depressed sections, to support and secure the liquid crystal panel and flexible circuit boards, ensuring they are fixed without increasing the frame width, and includes buckles and screws for additional stability and assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If flexible circuit boards are accommodated in the adhesive frame, then the liquid crystal display module can be assembled, but the frame width increases and structural stability deteriorates

Engineering Contradiction:

Improveaccommodation of flexible circuit boardsVSAvoidstructural stability

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The adhesive frame is segmented into carrying sections, limiting sections, and connecting sections, each with specific functions. The carrying sections support the liquid crystal panel while the limiting sections constrain flexible circuit board movement, and connecting sections attach to the backboard. This segmentation allows the frame to accommodate flexible circuit boards without compromising overall structural stability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the adhesive frame are designed with different properties: the carrying sections have load-bearing characteristics, the limiting sections have constraint characteristics with notches and depressed sections, and the connecting sections have attachment characteristics. This local differentiation enables specialized accommodation of flexible circuit boards in specific areas without affecting the entire frame's structural integrity.

Inventive Principle:

Principle #3Local quality

2Ease of manufacture

If the adhesive frame structure is simplified, then manufacturing is easier, but the firmness of assembly deteriorates

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoidassembly firmness

Core Design Contradiction:

Ease of manufactureVSStrength

Solution Approach 1:

The adhesive frame integrates multiple functions into a single component: support function (carrying sections), constraint function (limiting sections with notches and depressed sections), and attachment function (connecting sections). This merging eliminates the need for separate support structures, constraint mechanisms, and mounting brackets, simplifying manufacturing while maintaining assembly firmness through the unified multi-functional design.

Inventive Principle:

Principle #5Merging (Combining)

3Ease of operation

If the frame width is increased to accommodate flexible circuit boards, then assembly is easier, but the thinness and compactness of the display device deteriorates

Engineering Contradiction:

Improveassembly easeVSAvoidframe width

Core Design Contradiction:

Ease of operationVSLength of stationary object

Solution Approach 1:

Instead of increasing frame width to accommodate flexible circuit boards, the design utilizes the vertical dimension by creating depressed sections that extend inward from the frame's outer surface. The notches and depressed sections provide accommodation space for flexible circuit boards in the depth direction rather than the width direction, maintaining the device's thin profile while enabling easy assembly through the three-dimensional structural features.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUSRE49296E1Liquid crystal display module comprising an adhesive frame having carrying sections and limiting sections and display device

Publication Date: 2022.11.15 HISENSE USA CORP

AI summary

In a liquid crystal display module, notches are disposed on limiting sections and opposite to flexible circuit boards disposed on a liquid crystal panel so that the flexible circuit boards protrude through the notches and are bent toward the connecting sections; and moreover first depressed sections configured to accommodate the flexible circuit boards may be disposed on the connecting sections and opposite to the notches; and second depressed sections depressed inward may be disposed on the folded edge and opposite to the first depressed sections so that the first depressed sections and the second depressed sections cooperate with each other.