Liquid Crystal Display Adhesive Placement to Prevent Light Leakage
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Solution Overview
Problem
Conventional liquid crystal displays suffer from light leakage issues at the boundary between the display area and the peripheral area due to stress from adhesive members, which can affect the IC chips and compromise viewing angles.
Innovation Solution
The design includes a liquid crystal display with an adhesive member positioned in the peripheral area that does not overlap with the IC chips, using a double-sided adhesive tape to secure the liquid crystal panel to the molded frame, thereby preventing stress on the IC chips and minimizing light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the adhesive member is used to fix the liquid crystal panel to the chassis, then the liquid crystal panel can be securely mounted, but stress from the adhesive member causes light leakage at the boundary between the display area and peripheral area
Solution Approach 1:
The adhesive member is extracted from the display area and relocated exclusively to the peripheral area, separating its mounting function from the IC chip region. This extraction eliminates the harmful stress interaction between the adhesive and IC chips while preserving the necessary mechanical bonding function at the panel-chassis interface.
Solution Approach 2:
The adhesive member is applied with non-uniform distribution: it is present in the peripheral area for structural support but deliberately absent from the display area where IC chips are located. This local quality variation ensures that the adhesive provides mounting strength where needed while avoiding light leakage issues in the critical display region.
2Object-affected harmful factors
If the adhesive member is positioned in the peripheral area to avoid IC chips, then light leakage is prevented, but the mounting stability may be reduced
Solution Approach 1:
The adhesive member extends in the vertical dimension to increase its bonding area with the chassis, compensating for its restricted horizontal placement in the peripheral area only. This dimensional extension maintains sufficient mounting stability while preserving the light leakage prevention benefit of avoiding the display area.
Data Source
AI summary
A liquid crystal display, including: a liquid crystal panel including a first display panel and opposing second display panel opposite the first display panel, a backlight assembly configured to provide light to the liquid crystal panel, a receiving member configured to support the backlight assembly, and an adhesive member configured to couple the liquid crystal panel and the receiving member. The first display panel includes a display area configured to display an image, a peripheral area disposed outside the display area, and a plurality of integrated circuit (“IC”) chips disposed in the peripheral area, the plurality of IC chips being configured to apply a driving signal to the display area. The adhesive member is disposed in the peripheral area and does not overlap with the plurality of IC chips.