Display Cover Adhesive Configuration for Vibration Resistance
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Solution Overview
Problem
Existing liquid crystal display devices face issues with display unevenness and misalignment of the cover window due to stress from the housing case, particularly when using ring-shaped double-sided pressure-sensitive adhesive tapes, which can lead to the cover window twisting and becoming unstuck under deformation or vibration.
Innovation Solution
The use of double-sided pressure-sensitive adhesive tapes arranged along the sides of the cover glass, with an adhesive filling hole on the pasting plate portion of the support case, where the adhesive is applied between the tapes to bond the cover glass to the support case, providing a combination of pressure-sensitive and non-pressure-sensitive adhesion to secure the cover glass without twisting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ring-shaped double-sided pressure-sensitive adhesive tape is used to join the case and cover window, then the cover window is securely fixed to the case, but the cover window may twist due to stress from case deformation, causing display unevenness
Solution Approach 1:
The adhesive bonding is divided into two independent parts: ring-shaped double-sided pressure-sensitive adhesive tape for peripheral fixation, and linear adhesive applied in the central area. This segmentation allows each adhesive type to perform its optimal function - the tape provides secure peripheral anchoring while the linear adhesive in the center compensates for stress and prevents twisting, thereby resolving the contradiction between fixing strength and display uniformity.
2Device complexity
If only double-sided pressure-sensitive adhesive tape is used to join the case and cover window, then the structure is simple, but the adhesive force may be insufficient, causing misalignment or detachment under vibration
Solution Approach 1:
Two different adhesive mechanisms are merged into a single bonding system: the ring-shaped double-sided pressure-sensitive adhesive tape provides peripheral fixation, while the linear adhesive applied in the central area provides additional bonding strength. This combination of different adhesive types creates a synergistic effect that ensures reliable bonding under vibrational conditions while maintaining reasonable structural simplicity.
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 effectively prevents display unevenness and misalignment, ensuring the cover glass remains securely attached to the support case even under vibrational conditions, such as those encountered in vehicle installations.
Implementation Method 1
pressure-sensitive adhesive members that are arranged between the pasting surface of the display cover support case and the display cover, and join together the display cover and the display cover support case with a pressure-sensitive adhesive force
Implementation Method 2
an adhesive that is arranged in an area located on the pasting surface and interposed between the pressure-sensitive adhesive members in a longitudinal direction of the pasting surface, and that bonds together the display cover and the display cover support case
Data Source
AI summary
The present disclosure includes a liquid crystal panel; a backlight that illuminates the liquid crystal panel; a display cover that covers a display surface of the liquid crystal panel; a housing case that houses the backlight; a display cover support case to whose inside the housing case is fixed and whose outer circumferential surface serves as a pasting surface pasted to the display cover; pressure-sensitive adhesive members that are arranged between the pasting surface of the display cover support case and the display cover, and join together the display cover and the display cover support case with a pressure-sensitive adhesive force; and an adhesive that is arranged in an area located on the pasting surface and interposed between the pressure-sensitive adhesive members in the longitudinal direction of the pasting surface, and that bonds together the display cover and the display cover support case.