Hole-Punch Screen Polarizer Bubble Prevention
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Solution Overview
Problem
Existing hole-punch screens with a blind hole scheme suffer from bubbles in the polarizer hole due to the inability to fully fill the edge with optical clear adhesive, affecting appearance and reliability testing.
Innovation Solution
A hole-punch screen design where the first through hole in the polarizer is filled with optical clear glue before attaching the polarizer to the light-transmitting cover, ensuring no bubbles form and improving fit and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the polarizer is attached to the light-transmitting cover with a blind hole scheme, then the screen-to-body ratio is improved and the frame is ultra-narrow, but bubbles form in the polarizer hole due to incomplete filling with optical clear adhesive
Solution Approach 1:
The patent applies preliminary action by filling the polarizer hole with optical clear adhesive before attaching the polarizer to the light-transmitting cover. This pre-filling ensures that the hole is completely filled with adhesive, preventing bubble formation and ensuring complete edge coverage, thereby resolving the appearance quality issue while maintaining the high screen-to-body ratio achieved through the blind hole scheme
2Illumination intensity
If the polarizer hole is punched through the polarizer, then light can pass through to the camera, but the hole cannot be fully filled at the edge with optical clear adhesive due to the polarizer thickness
Solution Approach 1:
The patent performs the adhesive filling action before polarizer attachment, allowing complete filling of the polarizer hole including the edge regions. This preliminary filling ensures that even though the polarizer has significant thickness (70-200 μm), the adhesive can fully penetrate and fill the hole, eliminating incomplete filling issues while maintaining proper light transmission to the camera
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 allows for a fully filled and bubble-free first through hole, enhancing the appearance and reliability of the hole-punch screen by preventing gaps and ensuring optimal camera performance.
Implementation Method 1
the first through hole is first filled with optical clear glue, which is in liquid form so that the first through hole can be fully filled and no bubbles is generated in the first through hole when the optical clear glue is solidified
Implementation Method 2
light can pass through a display module to reach the camera underneath the panel
Data Source
AI summary
A hole-punch screen includes a light-transmitting cover, a polarizer, and a glass component, where the polarizer is attached to the light-transmitting cover, the polarizer is provided with a first through hole, and the first through hole is filled with optical clear glue; and the glass component is attached to the polarizer so that the polarizer is located between the light-transmitting cover and the glass component, and the glass component is provided with a second through hole at a position corresponding to the first through hole.