Flexible Display Panel Fold Frame Design

Solution Overview

Problem

Existing flexible display technologies are limited in reducing border width to achieve ultra-narrow or borderless displays, as they primarily focus on reducing the width of the wiring area or bending borders, which does not effectively increase the screen proportion.

Innovation Solution

A display panel design featuring a non-right angled display area with a fold frame that divides the border area into two sections, allowing the borders to be independently folded, and a thin film encapsulation structure to protect the panel while maximizing screen area, using a special border area wiring method to ensure reliability and achieve ultra-narrow or borderless borders.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the width of the wiring area outside the display area is reduced to achieve narrow border, then the border width is reduced, but the screen proportion cannot be sufficiently increased and ultra-narrow or borderless display cannot be achieved

Engineering Contradiction:

Improvedisplay areaVSAvoidwiring area structure

Core Design Contradiction:

Area of stationary objectVSDevice complexity

Solution Approach 1:

The border area is divided into multiple independent folding regions through fold lines, with each region containing specific circuit structures. This segmentation allows different parts of the border to be independently folded and disposed of, enabling the display area to be expanded while circuit functions are preserved in the folded border regions.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The circuit structures are moved from the planar border area into the folded three-dimensional space. By folding the border areas along fold lines, the circuit structures are repositioned in the vertical dimension, allowing the display area to extend to the edges without compromising circuit functionality.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Area of stationary object

If bending two pairs of border area to form a curved surface to narrow border width, then the border width is reduced, but the degree of reduction is limited and ultra-narrow borders cannot be achieved

Engineering Contradiction:

Improvedisplay areaVSAvoidborder shape

Core Design Contradiction:

Area of stationary objectVSShape

Solution Approach 1:

The border area is divided into multiple independent folding regions through fold lines, with each region containing specific circuit structures. This segmentation allows different parts of the border to be independently folded and disposed of, enabling the display area to be expanded while circuit functions are preserved in the folded border regions.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The border areas are designed to be foldable along predetermined fold lines, transforming from a static planar structure to a dynamic multi-state structure. The foldable design allows the border to be folded in various directions and angles, enabling ultra-narrow or borderless display configurations while maintaining circuit functionality.

Inventive Principle:

Principle #15Dynamics

3Area of stationary object

If integrating the chip on the film to narrow the border width, then the border width is reduced, but only three sides can be reduced and four-sided ultra-narrow border cannot be achieved

Engineering Contradiction:

Improvedisplay areaVSAvoidmanufacturing process

Core Design Contradiction:

Area of stationary objectVSEase of manufacture

Solution Approach 1:

The border area is divided into multiple independent folding regions through fold lines, with each region containing specific circuit structures. This segmentation allows different parts of the border to be independently folded and disposed of, enabling the display area to be expanded while circuit functions are preserved in the folded border regions.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The circuit structures are moved from the planar border area into the folded three-dimensional space. By folding the border areas along fold lines, the circuit structures are repositioned in the vertical dimension, allowing the display area to extend to the edges without compromising circuit functionality.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS10509436B2Display panel and display device

Publication Date: 2019.12.17 WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO LTD

AI summary

A display panel is provided. The display panel includes a display area including four sides and four corners, and all of the corners are not right angles; and a border area surrounding the display area, wherein four fold lines respectively parallel to the four sides are arranged in the border area, the four fold lines enclose a fold frame, the fold frame divides the border area into a first border area and a second border area, the second border area includes four borders and a turning portion connecting every two of the four borders, and the turning portions makes the four borders be independently folded along the fold frame. The display panel of the disclosure adopts a special display area design and a special border area wiring method to ensure the reliability of the thin film encapsulation and achieve the ultra-narrow border or even borderless border of the flexible display.