OLED Camera Alignment via Low Pixel Density Marking
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Solution Overview
Problem
Current AMOLED display devices face issues with reliability and manufacturing complexity due to the through-hole method used for camera placement, leading to poor user experience and increased costs, especially with flexible products where the edge reliability of holes is compromised and non-display area borders need to be enlarged.
Innovation Solution
An organic light emitting diode (OLED) display device with a first alignment mark on the display panel and a second alignment mark in the camera, allowing for improved alignment accuracy through consistent arrangements, enabling a blind hole design that avoids physical hollowing and maintains display functionality without enlarging the non-display area borders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the through-hole method is used to place the camera on the display screen, then the camera can be disposed on the backside of the display screen, but the reliability of the edge of the hole is compromised and the border of the non-display area needs to be enlarged
Solution Approach 1:
The patent extracts the camera module from the traditional through-hole placement and relocates it to the low pixel density area on the display panel itself. The camera is integrated into the display panel structure, with its light receiving surface facing the low pixel density area, eliminating the need for through-holes and associated reliability issues.
Solution Approach 2:
The patent transitions from a three-dimensional through-hole structure to a two-dimensional integration within the display panel plane. The camera is positioned in the low pixel density area without requiring physical hollowing, effectively using the display panel's own structure to accommodate the camera.
2Adaptability or versatility
If the through-hole method is used for flexible products, then the camera can be mounted, but the manufacturing complexity and cost increase due to enlarged non-display area borders
Solution Approach 1:
The patent merges the camera module with the display panel by integrating the camera into the low pixel density area of the display panel. This combination eliminates the need for separate through-hole processing and enlarged non-display borders, simplifying the manufacturing process for flexible products.
Solution Approach 2:
The patent applies local quality by creating a low pixel density area specifically designed to accommodate the camera module. This localized modification allows camera integration without affecting the overall display quality or requiring global structural changes to the display panel.
3Ease of operation
If physical hollowing is used to create space for the camera, then the camera can be disposed on the backside, but the display functionality is compromised in the hollowed area
Solution Approach 1:
The patent uses alignment marks to create a precise copying relationship between the camera position and the low pixel density area. The first alignment mark on the display panel and the second alignment mark on the camera module ensure accurate positioning without physical hollowing, preserving display functionality while enabling camera mounting.
Solution Approach 2:
The patent performs preliminary action by pre-defining the low pixel density area and alignment marks during display panel manufacturing. This preliminary preparation enables subsequent camera integration without requiring destructive physical hollowing, thus maintaining display functionality in the camera region.
Data Source
AI summary
An organic light emitting diode (OLED) display device is provided. The OLED display device includes a display panel and a camera. A first alignment mark is formed on a low pixel density area of the display panel, a second alignment mark is formed in the camera, and arrangements of the first alignment mark and the second alignment mark are consistent. Therefore, an alignment accuracy between the camera and the display panel is improved, and a purpose of adopting a blind hole in the area where the camera is mounted on the display device and displaying normally is achieved.