Narrow Frame Display via Side Adhesive Bonding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display apparatuses face challenges in achieving a narrow-frame design due to the limitations imposed by the width of black adhesive tape and the required clearance between the backlight module and the display panel, making it difficult to manufacture frames with a width of 0.9 mm or less.
Innovation Solution
The display apparatus employs adhesive layers formed on the side surfaces of a display module, where the edges of a layer protrude beyond the liquid crystal cell, adhered to the backlight module, lower polarization filter, and liquid crystal cell, eliminating the need for black adhesive tape and allowing for narrower frame widths by optimizing the thickness and application of these adhesive layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If black adhesive tape is used to bond the backlight module and display panel, then reliable bonding is achieved, but the frame width cannot be reduced below 0.9 mm
Solution Approach 1:
The invention extracts and eliminates the black adhesive tape from the bonding structure. Instead of using tape, the patent uses adhesive layers directly applied to the side surfaces of the display module components (backlight module, lower polarization filter, liquid crystal cell, and layer), thereby removing the width constraint imposed by the tape and enabling frame widths of 0.9 mm or less.
Solution Approach 2:
The invention transitions from a planar bonding approach (black adhesive tape on the front surface) to a three-dimensional bonding approach (adhesive layers on side surfaces). The adhesive layers are applied to the side surfaces of the stacked components and extend toward the front surface, bonding the backlight module and display panel through the side surface configuration rather than requiring front surface tape.
2Device complexity
If black adhesive tape is used for bonding, then assembly is simplified, but the clearance between the tape and effective display region edge must be preserved, limiting frame design
Solution Approach 1:
The invention merges the bonding function with the existing side surface structures of the display module components. The adhesive layers are applied to the side surfaces of the backlight module, lower polarization filter, liquid crystal cell, and layer, combining the bonding function with the structural elements already present in the display module, thereby eliminating the need for separate black adhesive tape and its associated clearance requirements.
3Ease of manufacture
If the layer edges protrude beyond the liquid crystal cell, then adhesive layers can be applied on side surfaces, but manufacturing precision is required to control the protrusion
Solution Approach 1:
The invention performs preliminary action by pre-forming the layer (upper polarization filter or transparent cover plate) with edges that protrude beyond the liquid crystal cell edges. This preliminary configuration of the layer with extended edges enables subsequent adhesive layer application on the side surfaces of the stacked components, providing accessible bonding surfaces while the protrusion dimensions are controlled within specific ranges (0.05-0.2 mm for polarization filter, 0.3-0.5 mm for cover plate).
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 approach enables the manufacture of display apparatuses with narrower frames, facilitating a narrow-frame design by eliminating the width constraints imposed by traditional black adhesive tape, thereby enhancing design flexibility and manufacturing efficiency.
Implementation Method 1
adhesive layers are disposed on side surfaces of the display module where the edges of the layer protrude beyond the liquid crystal cell, in any one of the side surfaces of the display module where the adhesive layers are disposed, the adhesive layer is adhered to a side surface of the backlight module, a side surface of the lower polarization filter, a side surface of the liquid crystal cell, and a surface, facing towards the backlight module, of the edge of the layer protruding beyond the liquid crystal cell
Data Source
AI summary
Embodiments of the present disclosure disclose a display apparatus and a method of manufacturing the display apparatus. A display panel includes a liquid crystal cell, a lower polarization filter, and a layer of which at least a pair of edges protrude beyond the liquid crystal cell. Adhesive layers are disposed on side surfaces of the display module. In any one of the side surfaces of the display module, the adhesive layer is adhered to side surfaces of the backlight module, of the lower polarization filter, and of the liquid crystal cell, and a surface, facing towards the backlight module, of the edge of the layer protruding beyond the liquid crystal cell, and has a thickness in a direction perpendicular to the side surface of the liquid crystal cell to which the adhesive layer is adhered, and the thickness is less than or equal to a selected thickness.