Circuit Board Lamination on Driving Layer Surface
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Solution Overview
Problem
Existing display devices for mobile phones have a circuit board that overlaps with the driving layer, increasing the length and occupied space, which affects user experience due to the need for the circuit board to bypass the driving layer to connect with the mainboard.
Innovation Solution
The display device design includes a driving layer with a second surface facing away from the mainboard, where the circuit board is partially laminated and electrically coupled, reducing the length and width of the circuit board and allowing it to be directly connected to the mainboard without bypassing the driving layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the circuit board is partially laminated on the second surface of the driving layer, then the length and volume of the circuit board are reduced, but the electrical coupling between the circuit board and the driving layer becomes more complex
Solution Approach 1:
The circuit board is configured to partially overlap with the driving layer in the vertical dimension, allowing electrical coupling through multi-layer lamination rather than lateral extension. This dimensional transition reduces the circuit board length while maintaining electrical connectivity through vertical stacking of conductive layers.
2Reliability
If the circuit board bypasses the driving layer to connect with the mainboard, then the electrical connection is established, but the occupied space of the display device increases
Solution Approach 1:
The circuit board is merged with the driving layer through partial lamination, where the circuit board overlaps and electrically couples with the driving layer. This integration eliminates the need for separate bypass routing, reducing the overall occupied space while maintaining reliable electrical connection to the mainboard.
3Area of stationary object
If the circuit board is laminated on the second surface of the driving layer, then the non-display area is reduced, but the manufacturing process becomes more complex
Solution Approach 1:
The circuit board is pre-configured with conductive patterns and lamination structures before final assembly with the driving layer. This preliminary preparation of the circuit board allows for simplified integration during manufacturing, reducing the complexity of the overall manufacturing process while achieving reduced non-display area.
Data Source
AI summary
A display device, an electronic apparatus, and a method for manufacturing the display device are provided. The display device includes a driving layer and a circuit board. The driving layer is configured to drive the liquid crystals to move so as to change orientation of the liquid crystals. The driving layer includes a first surface facing away from a mainboard of an electronic apparatus having the display device and a second surface facing away from the first surface. The circuit board is partially laminated on the second surface and electrically coupled to the driving layer.