Curved Display Panel Non-Display Area Minimization

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Solution Overview

Problem

The existing display devices with liquid crystal displays face challenges in minimizing non-display areas, which can lead to increased thickness, reduced flexibility, and decreased brightness and response speed, as well as limitations in design and portability due to the need for a backlight and separate light sources.

Innovation Solution

A display device design where the entire non-display area of the display panel is bent towards the side face, incorporating a flat portion and curved portions along the edges and corners, with an adhesive layer between the display panel and a front member, to minimize the non-display area and prevent wrinkles, allowing for a thinner, more flexible, and aesthetically pleasing design.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the non-display area is minimized by bending the edge areas, then the display area ratio increases and portability improves, but wrinkles may occur where curved portions meet

Engineering Contradiction:
Improvenon-display areaVSAvoidwrinkle defect
Core Design Contradiction:
Area of stationary objectVSReliability

Solution Approach 1:

The non-display area is divided into multiple curved portions (first curved portion along sides, second curved portion at corners) that are separately formed and then connected. This segmentation allows each portion to be optimized independently to prevent wrinkle formation at connection points while still achieving overall minimization of the non-display area.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The non-display area is formed with curved portions having specific curvature radii (first curvature radius for side curved portions, second curvature radius for corner curved portions). The curvature is carefully controlled to ensure smooth transitions and prevent wrinkle formation, while still achieving the goal of minimizing the non-display area to improve display area ratio and portability.

Inventive Principle:
Principle #14Spheroidality (Curvature)

2Illumination intensity

If liquid crystal display with backlight is used, then display function is achieved, but thickness increases and flexibility is reduced

Engineering Contradiction:
Improvedisplay functionVSAvoidthickness
Core Design Contradiction:
Illumination intensityVSLength of moving object

Solution Approach 1:

The patent replaces the mechanical backlight system with a self-light-emissive display technology. This substitution eliminates the need for a separate light source and backlight unit, thereby reducing thickness while maintaining display function. The self-light-emissive elements generate light directly, removing the bulky mechanical components associated with traditional LCD backlights.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Illumination intensity

If liquid crystal display with separate light source is used, then display function is achieved, but response speed and brightness decrease

Engineering Contradiction:
Improvedisplay functionVSAvoidresponse speed
Core Design Contradiction:
Illumination intensityVSSpeed

Solution Approach 1:

The patent replaces the separate light source system with integrated self-light-emissive elements. This substitution eliminates the delay associated with backlight illumination and liquid crystal modulation, enabling faster response speeds. The self-light-emissive technology allows each pixel to generate light independently and respond immediately to electrical signals, improving both response speed and brightness.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS20250004313A1Display device
Publication Date: 2025.01.02 LG DISPLAY CO LTD
  • US20250004313A1 patent drawing
  • US20250004313A1 patent drawing
  • US20250004313A1 patent drawing

AI summary

A display device can include a display panel having a flat portion and at least one curved portion extending from the flat portion in a bent manner, a front member disposed on the display panel, and an adhesive layer disposed between the display panel and the front member. Also, an end of the front member can include at least one tapered region.