Bendable Touch Display Panel for Foldable Electronic Device

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Solution Overview

Problem

Current electronic devices with narrow-border screens suffer from visible black frames that disrupt the immersive experience when multiple screens display content synchronously, and existing touch screens are hindered by hand obstruction and fingerprint residue.

Innovation Solution

A bendable touch display panel is integrated into the electronic device, featuring a U-shaped structure that hides borders on the sides, allowing for bilateral boundlessness and enabling touch operations on both sides, which can function as either display or touch areas, preventing hand obstruction and reducing fingerprint residue.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of stationary object

If a narrow-border screen is used, then the border thickness is reduced, but visible black frames still exist causing discontinuity of the image

Engineering Contradiction:
Improveborder thicknessVSAvoidimage continuity
Core Design Contradiction:
Length of stationary objectVSEase of manufacture

Solution Approach 1:

The display panel is extended from a traditional rectangular shape to a U-shaped configuration that wraps around the sides of the device body. This dimensional change allows the display to cover the lateral borders, achieving borderless display effect while maintaining manufacturing feasibility through flexible panel technology

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

A flexible touch display panel is used to enable the U-shaped configuration that wraps around the device sides. The flexibility of the thin film panel allows it to conform to the device geometry and hide the borders, achieving the borderless effect without compromising manufacturing

Inventive Principle:
Principle #30Flexible shells and thin films

2Ease of operation

If a traditional touch screen is used, then touch operation is enabled, but hands block the display image and fingerprints remain on the screen surface

Engineering Contradiction:
Improvetouch operation capabilityVSAvoidhand obstruction and fingerprint residue
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The touch display is extended to the side surfaces of the device, creating a three-dimensional display surface. Users can perform touch operations on the side display areas, which keeps their hands away from the main front display, preventing hand obstruction of the primary viewing area

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The display surface is segmented into multiple areas: a main front display area and side display areas. This segmentation allows touch operations to be performed on the side areas while the main area remains obstruction-free for optimal viewing

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS12032409B2Electronic device
Publication Date: 2024.07.09 COMPAL ELECTRONICS INC
  • US12032409B2 patent drawing
  • US12032409B2 patent drawing
  • US12032409B2 patent drawing

AI summary

An electronic device is provided, including first and second bodies, a processing module, a touch display panel, and at least one sensing unit. The second body is rotatably connected to the first body. The processing module is disposed in the first body or the second body. The touch display panel is disposed on the second body, is coupled to the processing module, and has a main display part, and first and second display parts. The sensing unit is disposed in the first body or the second body and coupled to the processing module. When the sensing unit detects the first and second bodies are folded relative to each other, the processing module is switched to a second mode, wherein in the second mode, the main display part is activated, the first display part and the second display part are adapted to operate synchronously or operate individually.