Display Panel Film Assembly for Insulation Gap Measurement
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Solution Overview
Problem
Existing display devices lack a method to effectively measure insulation resistance and determine insulation gaps between components, which is crucial for ensuring reliable electrical connections and device performance.
Innovation Solution
A display device design that includes a display panel with a first film and an adhesive member, featuring test electrodes and alignment marks to measure insulation resistance and determine insulation gaps, allowing for precise alignment and attachment of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive member is used to attach display panel to first film, then attachment strength is improved, but insulation resistance measurement becomes difficult
Solution Approach 1:
Test electrodes are formed on the display panel before the adhesive member is attached to the first film. This preliminary positioning allows insulation resistance measurement to be performed through the adhesive member afterward, enabling quality verification without compromising attachment strength.
Solution Approach 2:
The adhesive member serves as an intermediary element that both attaches the display panel to the first film and allows insulation resistance measurement. By incorporating test electrodes that extend through or contact the adhesive member, the adhesive fulfills dual functions of mechanical bonding and electrical testing.
2Measurement precision
If alignment marks are added to enable insulation resistance measurement, then measurement capability is improved, but device complexity increases
Solution Approach 1:
The alignment marks are designed to serve multiple functions: they provide alignment guidance during assembly and simultaneously serve as test electrodes for insulation resistance measurement. This multi-functionality reduces the need for separate measurement structures, thereby limiting the increase in device complexity.
Solution Approach 2:
The alignment mark structure is merged with the test electrode function. By integrating the measurement capability into the existing alignment mark structure, the patent avoids adding separate complex measurement apparatus, thus minimizing the increase in overall device complexity.
3Measurement precision
If test electrodes are positioned to measure insulation through adhesive member, then insulation gap determination is improved, but manufacturing precision requirements increase
Solution Approach 1:
Test electrodes are positioned and formed on the display panel before adhesive attachment. This preliminary positioning, combined with alignment marks, ensures that the electrodes are correctly located relative to the adhesive member and first film, facilitating accurate insulation gap measurement without requiring extremely tight manufacturing tolerances during assembly.
Data Source
AI summary
A display device includes a display panel, a first film attached to the display panel, an adhesive member interposed between the display panel and the first film and extending in a first direction to attach the display panel to the first film, a first test electrode covered by the adhesive member; a second test electrode covered by the adhesive member and spaced apart from the first test electrode in a second direction perpendicular to the first direction, and test lines comprising a first test line electrically connected to the first test electrode and a second test line electrically connected to the second test electrode, where the adhesive member is disposed between the first test electrode and the second test electrode in the second direction.