Segmented Polarizer Gap for Bubble Evacuation in Display Devices
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Solution Overview
Problem
In existing display devices, air bubbles between the polarizer and the touch panel can enter the display area, affecting the display effect due to gaps between the flexible circuit board and the touch panel during assembly.
Innovation Solution
A display device design where the polarizer is divided into a first-stage and a second-stage polarizer by a dividing surface in a non-display area, creating a gap that allows air bubbles to escape before reaching the display area, with the dividing surface being variously configured as planar, curved, sawtooth, or composite surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a polarizer is attached to cover the touch panel and flexible circuit board, then the assembly is complete, but air bubbles are trapped between the polarizer and touch panel
Solution Approach 1:
The polarizer is divided into a first polarizer and a second polarizer with a gap between them. The first polarizer covers the flexible circuit board while the second polarizer covers the touch panel. This segmentation allows air bubbles to escape through the gap during assembly, preventing them from being trapped in the final assembly.
2Stability of the object's composition
If the flexible circuit board is bound to the touch panel in a non-display area, then the components are secured, but gaps are created that allow air bubbles to enter the display area
Solution Approach 1:
The gap between the first and second polarizers acts as an intermediary channel that allows air bubbles to escape from the non-display area. The polarizers serve as mediator structures that both secure the components and provide a controlled path for bubble evacuation, preventing bubbles from entering the display area.
Data Source
AI summary
The present application provides a display device whose polarizer is divided into a first-stage polarizer and a second-stage polarizer in a second region of a non-display area, and a gap is formed between the first-stage polarizer and the second-stage polarizer. Based on the gap formed between the first-stage polarizer and the second-stage polarizer, after the polarizer is attached to cover a touch panel, air bubbles existing between the polarizer and the touch panel will flow out through the gap. The display device avoids the entry of the air bubbles into a display area.