Exposed Wiring Pad Structure for Narrow-Bezel Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display apparatuses have wide bezels that reduce the perceived size of the display area, limiting the user's experience of the device's edgelessness.
Innovation Solution
A display apparatus with narrow bezels is designed by using a first substrate with wiring pads extending to its lower end, a second substrate with a shorter lower end to expose these pads, and side wiring pads formed from silver paste on a plastic film, connected via an anisotropic conductive film to a 3-chip on film display driving circuit, allowing for a reduced bezel width of 1 mm or less.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conventional display apparatus design is used, then the housing structure is simple and easy to manufacture, but the bezel width is wide which reduces the perceived display area
Solution Approach 1:
The housing is divided into multiple segments: a front housing portion with a first opening, a rear housing portion with a second opening, and a side housing portion connecting them. This segmentation allows each portion to be optimized independently, enabling narrow bezel formation while maintaining manufacturing feasibility through modular assembly
Solution Approach 2:
The invention transitions from a conventional single-plane bezel design to a multi-dimensional housing structure where the side housing portion extends laterally to connect the front and rear openings. This dimensional change allows the bezel to be formed by the spatial relationship between multiple housing components rather than a single continuous frame
2Area of stationary object
If the bezel width is reduced to increase display area, then the perceived display size increases, but the wiring and connection structure becomes more complex
Solution Approach 1:
A wiring board is introduced as an intermediary component that extends from the rear housing portion through the side housing portion to the front housing portion. This mediator carries the wiring connections through the narrow bezel region, allowing electrical connections to be maintained without requiring the bezel itself to be wide
Solution Approach 2:
The wiring board is designed as a flexible thin film structure that can bend and extend through the narrow spatial gap created by the reduced bezel width. This flexible structure allows wiring to be routed through the compact housing without requiring additional space that would increase bezel 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
The solution effectively reduces the bezel width, enhancing the user's perception of the display's edgelessness and providing a more immersive viewing experience by minimizing the visible frame around the screen.
Implementation Method 1
a plurality of side wiring pads provided on the lower end of the first substrate and the lower end of the second substrate, wherein each respective side wiring pad is connected to a respective a wiring pad of the plurality of wiring pads
Implementation Method 2
Each side wiring pad of the plurality of side wiring pads may include silver paste, and the plurality of side wiring pads may be formed by thermally transferring the plurality of side wiring pads from a plastic film to the lower end of the first substrate and the lower end of the second substrate
Data Source
AI summary
A display apparatus includes a first substrate including an upper end, a left end, a right end, and a lower end, and a plurality of wiring pads extending to the lower end; a display layer provided on a surface of the first substrate; a second substrate provided on a surface of the display layer, including an upper end, a left end, and a right end coincident with the upper end, the left end, and the right end of the first substrate, and a lower end shorter than the lower end of the first substrate, where the plurality of wiring pads of the first substrate are exposed; a plurality of side wiring pads provided on the lower end of the first substrate and the lower end of the second substrate and connected to the plurality of wiring pads; and a display driving circuit connected to the plurality of side wiring pads.