Display Panel Adhesive Reliability Narrow Frame Design
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Solution Overview
Problem
Existing display apparatuses have a wide frame region due to the need for adhesive members on the side surfaces of the display panel to bond it to the backlight device, which obstructs light emission and increases the overall thickness, making it difficult to achieve a narrower frame design.
Innovation Solution
A display apparatus design featuring a housing with a wall portion rising from the periphery towards the display panel side, where an adhesive member is strategically placed between the display panel and the wall portion, eliminating the need for adhesive on the side surfaces and integrating a resin portion with the wall to enhance bonding strength and light shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive members are placed on the side surfaces of the display panel to bond it to the backlight device, then bonding reliability is improved, but the frame region becomes wider and light emission is obstructed
Solution Approach 1:
The adhesive member is repositioned from the side surface (horizontal dimension) to the back surface (vertical dimension). By moving the adhesive to the back surface of the display panel, the bonding function is maintained while the side surface is cleared for light emission, effectively narrowing the frame region.
Solution Approach 2:
The adhesive member is extracted from the side surface location and relocated to the back surface. This extraction removes the obstructing element from the light path while preserving the essential bonding function through repositioning.
2Strength
If adhesive members are placed on the side surfaces of the display panel, then bonding strength is improved, but the overall thickness increases
Solution Approach 1:
The adhesive member is moved from the horizontal dimension (side surface) to the vertical dimension (back surface). This dimensional change allows the adhesive to provide bonding strength without adding to the lateral thickness of the display apparatus.
3Area of stationary object
If the frame region is narrowed, then display area ratio is improved, but adhesive bonding becomes insufficient
Solution Approach 1:
To maintain adequate bonding area while narrowing the frame, the adhesive member is repositioned to the back surface of the display panel. This allows the adhesive to extend along the back surface length, providing sufficient bonding area without increasing the side frame width.
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 allows for a narrower frame region by preventing light leakage and increasing the adhesive strength between the display panel and the backlight device, resulting in a more compact and efficient display design.
Implementation Method 1
an adhesive member bonding the display panel to the backlight device
Data Source
AI summary
According to an aspect, a display apparatus includes: a display panel; a backlight device disposed on a back surface side of the display panel; an adhesive member bonding the display panel to the backlight device; and a housing covering a back surface side of the backlight device. The housing includes a bottom portion and a wall portion rising from a periphery of the bottom portion toward the display panel side. The adhesive member is disposed between the display panel and the wall portion.