Double-Sided Display With Flexible Circuit Board

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Solution Overview

Problem

Conventional double-sided displays with complex and bulky circuitry fail to meet the requirements of lightweight and thin thickness in electronic products, and the connection method between printed circuits and integrated circuits affects the normal display output.

Innovation Solution

A double-sided display design featuring partially overlapping display panels with a flexible printed circuit board, which includes exposed bonding areas and edge connectors to simplify the circuit layout and reduce device count, allowing for a compact and efficient connection without compromising display performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If conventional double-sided display uses separate printed circuit boards and integrated circuits for front and back display panels, then the display function is achieved, but the device complexity and weight increase

Engineering Contradiction:

Improvecircuit designVSAvoiddisplay output

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent combines the printed circuit boards of the front and back display panels into a single integrated circuit board. This single circuit board controls both display panels, reducing device complexity and the number of components while maintaining the ability to independently control each display panel's output

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The single printed circuit board is designed to serve multiple functions: it controls both the front and back display panels, provides signal routing for both panels, and enables independent control of each panel. This multi-functional design reduces the overall circuit complexity while maintaining full display functionality

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If conventional double-sided display uses separate printed circuit boards and integrated circuits, then the display function is achieved, but the weight increases

Engineering Contradiction:

Improvedisplay outputVSAvoiddisplay weight

Core Design Contradiction:

ReliabilityVSWeight of stationary object

Solution Approach 1:

By merging the separate printed circuit boards and integrated circuits into a single integrated circuit board, the patent reduces the total weight of the display device while maintaining the capability to independently control both front and back display panels

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If conventional double-sided display uses separate printed circuit boards and integrated circuits, then the display function is achieved, but the thickness increases

Engineering Contradiction:

Improvedisplay outputVSAvoiddisplay thickness

Core Design Contradiction:

ReliabilityVSLength of stationary object

Solution Approach 1:

The patent merges the separate circuit boards into a single integrated circuit board, which reduces the overall thickness of the display device. This single circuit board is designed to accommodate the connection and control of both front and back display panels without increasing the device's thickness

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS7350326B2Double-sided display

Publication Date: 2008.04.01 AU OPTRONICS CORP

AI summary

A double-sided display is provided. The double-sided display includes two display panels comprising electroluminescene panels, organic light emitting panels, and polymer light emitting panels. The two display panels are stacked partially overlapped. A flexible printed circuit board having a bending portion adapted for electrically connecting with the two display panels.