OLED Display Assembly With Hooked Covering for Folded Circuit Protection
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Solution Overview
Problem
Existing OLED display devices face assembly defects due to manual misalignment during the installation of external covering cases, which occupy internal space and increase costs, while also requiring additional assembly steps.
Innovation Solution
An OLED display device design that integrates a clamping slot portion on the back plate or bracket for securely fixing a covering sheet, eliminating the need for external covering cases, and allows for a thinner, bezel-less structure by using a flexible circuit board with folded portions that are covered by the covering sheet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external covering cases are used to cover the folded portions of flexible circuits, then the folded portions are protected and cannot be exposed, but the covering structures occupy internal space, require additional assembly steps, and increase manufacturing costs
Solution Approach 1:
The patent merges the covering sheet with the back plate by integrating the covering sheet into the back plate structure, eliminating the need for separate external covering cases. The covering sheet is positioned between the back plate and the folded portions of the flexible circuit board, providing protection while being structurally unified with the back plate, thus reducing assembly steps and components.
Solution Approach 2:
The patent implements a nested structure where the covering sheet is embedded within the back plate assembly. The covering sheet is placed in a groove or recess of the back plate, and the back plate covers the folded portions of the flexible circuit board. This nesting approach protects the folded portions while integrating the covering function into the existing back plate structure, reducing the need for additional external components.
2Manufacturing precision
If external covering cases are used to cover the folded portions, then visibility from the front is maintained, but manual misalignment during mass production occurs leading to assembly defects
Solution Approach 1:
The patent applies preliminary action by pre-positioning the covering sheet within the back plate structure before final assembly. The covering sheet is integrated into the back plate with specific grooves, recesses, or clipping structures that guide and constrain its position. This pre-integration ensures proper alignment is achieved during the back plate assembly process itself, eliminating the need for separate alignment steps and reducing manual misalignment defects.
Solution Approach 2:
The patent uses the back plate as an intermediary structure that mediates between the folded portions of the flexible circuit board and the covering sheet. The back plate includes integrated features such as grooves, recesses, or clipping structures that receive and secure the covering sheet in the correct position. This intermediary structure ensures precise alignment and positioning during mass production, reducing assembly defects while maintaining ease of manufacture.
3Strength
If middle frames and fasteners are used for assembly, then structural support is provided, but internal space is occupied and costs increase
Solution Approach 1:
The patent extracts and eliminates the need for separate middle frames and fasteners by integrating the covering sheet directly into the back plate structure. The back plate itself provides the structural support function through its rigid construction, while the covering sheet is secured using integrated features such as grooves, recesses, or clipping structures formed directly on the back plate. This extraction of unnecessary components reduces internal space occupation and assembly complexity while maintaining structural support.
Solution Approach 2:
The patent applies multi-functionality by designing the back plate to simultaneously provide structural support and housing for the covering sheet. The back plate serves as both the structural framework and the mounting structure for the covering sheet, eliminating the need for separate middle frames and fasteners. The back plate's integrated features such as grooves, recesses, or clipping structures enable it to perform multiple functions: providing rigidity, supporting the OLED panel module, and securing the covering sheet in place.
Data Source
AI summary
An OLED display device includes an OLED panel module, a flexible circuit board coupled to the OLED panel module, a back plate, a bracket, a first circuit board located behind the back plate, and a covering sheet. The flexible circuit board is bent backward from the OLED panel module to form a folded board portion and is attached behind the OLED panel module. The OLED panel module is mounted in front of the back plate via the bracket. A wire is coupled to the first circuit board and the folded board portion through holes of the back plate and the bracket. A clamping slot portion is bent from a side wall of the back plate. A hook portion extends from a covering portion of the covering sheet to be inserted into the clamping slot portion for fixing the covering sheet to the side wall and cover the folded board portion.