Curved Light Guide Plate for Narrow Border LCDs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional liquid crystal display devices have a wider lower border area that obstructs the display aesthetics and functionality, as components like the driving chip and LEDs occupy this space, making it difficult to achieve a borderless or narrow border design.
Innovation Solution
The design incorporates a flexible light guiding plate with a bending portion that provides total internal reflection, allowing LEDs to be positioned outside the lower border and enabling the driving chip to be located without occupying the border area, using a reflective coating and flexible materials to ensure uniform backlighting and a narrower border.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If components (driving chip, LEDs) are positioned in the lower border area, then component placement is simplified, but the border area width increases
Solution Approach 1:
The light guiding plate is extended into a bending portion that protrudes from the lower border area toward the display area. This dimensional extension allows LEDs to be positioned on the bending portion rather than in the lower border, enabling the lower border to be narrowed or eliminated while maintaining component placement functionality.
Solution Approach 2:
The bending portion of the light guiding plate serves as an intermediary structure between the display area and the lower border area. It provides a platform for positioning LEDs and driving chips closer to the display area without occupying the lower border space, thus mediating the conflict between component placement needs and border width reduction.
2Shape
If the lower border area is narrowed or eliminated, then display aesthetics are improved, but component placement becomes more difficult
Solution Approach 1:
By extending the light guiding plate into a bending portion that protrudes toward the display area, the invention creates a new spatial dimension for component placement. This allows LEDs and driving chips to be positioned in the bending portion rather than in the lower border, achieving narrow or borderless display appearance while maintaining ease of component placement.
Solution Approach 2:
The light guiding plate is designed as a flexible structure that can be bent to form the bending portion. This flexibility allows the light guiding plate to adapt to the narrowed border configuration while still providing adequate space for component placement and light distribution.
3Length of stationary object
If LEDs are positioned outside the lower border, then border width is reduced, but light guiding complexity increases
Solution Approach 1:
The light guiding plate is designed with a bending portion that has a curved or bent shape protruding from the lower border area. This curvature enables the light guiding plate to redirect light from LEDs positioned on the bending portion into the display area, achieving border width reduction while managing light guiding through the curved structure.
Solution Approach 2:
By positioning LEDs on the bending portion that extends toward the display area, the invention uses the third dimension (depth/protrusion) to simplify light guiding. The bending portion naturally directs light into the display area, reducing the need for additional light guiding components or complex optical paths.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration achieves a narrower or borderless lower border in liquid crystal display devices by efficiently guiding light and positioning components outside the border area, enhancing display aesthetics and functionality.
Implementation Method 1
a flexible light guiding plate with a bending portion that provides total internal reflection
Implementation Method 2
using a reflective coating and flexible materials to ensure uniform backlighting
Data Source
AI summary
A liquid crystal display device includes a display panel and a backlight module. The display panel includes a TFT substrate. The TFT substrate includes a base portion that is flat and an extending portion curvedly extending from a side of the base portion. A driving chip is positioned on the extending portion and electrically coupled to the TFT substrate. The backlight module includes a light guiding plate including a main portion that is flat and a bending portion curvedly extending from a side of the main portion. The main portion is laminated on a side of the base portion. The bending portion extends toward a direction away from the base portion. An end surface of the bending portion away from the main portion is a light-incident surface of the light guiding plate. A surface of the main portion facing and adjacent to the base portion is a light-emitting surface.