Display Tape Segment Bending to Block Liquid Ingress
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Solution Overview
Problem
Existing liquid crystal display devices with segmented tapes face issues of foreign substance entry due to gaps at joints, leading to potential liquid ingress and image reproduction variations, especially when the device is angled, as the tape's thickness increases the likelihood of gaps and requires additional bezel recesses for compensation.
Innovation Solution
A display device configuration with a tape having segments that extend along the frame portion, where the end portions bend toward the upper section, reducing the likelihood of liquid reaching the gaps between segments and minimizing entry into the device, thereby effectively blocking foreign substances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the tape thickness is increased to provide cushioning properties, then the shock resistance is improved, but gaps are more likely to be created around overlapping sections
Solution Approach 1:
The patent introduces a recess in the frame at the joint position, creating a third dimensional space that accommodates the tape overlap. This recess structure allows the tape to maintain its thickness for cushioning while eliminating the protruding step that causes gaps, by providing a dedicated space for the overlapping portion within the frame depth.
Solution Approach 2:
The frame is designed with a localized recess only at the joint positions where tape segments overlap, rather than modifying the entire frame structure. This local modification allows the tape to have consistent thickness and cushioning properties throughout, while specifically addressing the gap formation issue only where it occurs at the joints.
2Ease of manufacture
If segments of the tape are connected to form a frame shape, then production cost is reduced, but gaps are created at joints allowing foreign substances to enter
Solution Approach 1:
By creating a recess in the frame at the joint positions, the patent moves the gap-closing function from the tape surface level to the frame depth level. This allows segmented tape construction to maintain both cost efficiency and sealing effectiveness, as the recess accommodates the overlap without creating external gaps.
Solution Approach 2:
The recess is pre-formed in the frame structure before the tape is applied. This preliminary preparation ensures that when the segmented tape is installed with overlapping joints, the overlap is immediately contained within the recess, preventing gap formation and foreign substance entry from the outset.
3Shape
If a recess in the frame is added to compensate for tape thickness, then the step is eliminated, but device complexity increases
Solution Approach 1:
The recess is implemented only at specific joint locations where tape segments connect, rather than as a continuous or universal feature. This localized approach eliminates steps only where necessary, maintaining the simple frame structure in all other areas and minimizing the overall increase in device complexity.
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
The described configuration prevents water and other foreign substances from entering the device, maintaining image quality and operational integrity even when exposed to liquids, as demonstrated by experiments confirming no water entry and no issues in display quality over extended periods.
Implementation Method 1
a liquid contacts the display surface, the liquid may flows down on the display surface due to the gravity and reach an optical component within the liquid crystal display device via the gap in the tape disposed below the display surface
Data Source
AI summary
A display device to be set in a position at an angle to a horizontal plane includes a display pane, a frame, and a tape. The display panel is configured to display images. The frame includes a frame portion surrounding a display area of the display panel. The tape is disposed between the display panel and the frame portion. The tape includes segments disposed along the frame portion. The segments include a lower segment extending along a lower section of the frame portion including end portions bending toward an upper section of the frame portion when the display device is set at the angle to the horizontal plane.