Display Module Sensor Integration Gap Reduction
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Solution Overview
Problem
In electronic devices, the integration of sensors like fingerprint sensors on the front surface is hindered by the need for larger display sizes, leading to visibility issues and interference due to the formation of gaps between the sensor and the display panel, causing photoelectric effects that affect image quality.
Innovation Solution
A display module design with a second panel having overlapping openings for the sensor, allowing a flexible printed circuit board to extend and reduce the gap, combined with optical and electrical shielding layers to minimize external light interference and visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a hole is formed in the cover panel to mount the sensor, then the sensor can be installed, but a gap is formed between the sensor and the hole causing external light interference
Solution Approach 1:
A light-shielding member is introduced as an intermediary component between the sensor mounting area and the display panel. This mediator blocks external light from passing through the gap between the sensor and the hole, preventing photoelectric effects in the display while allowing the sensor to be properly installed through the hole in the cover panel.
2Area of stationary object
If the display area is increased, then the display size increases, but the non-display area is reduced making sensor mounting difficult
Solution Approach 1:
The sensor mounting solution moves from the two-dimensional front surface of the display to the three-dimensional rear surface of the display panel. By forming a hole in the cover panel and mounting the sensor on the rear surface with a light-shielding member, the sensor can be integrated without reducing the front display area, effectively utilizing the third dimension to resolve the space conflict.
3Ease of manufacture
If a hole is formed for the sensor, then the sensor can be mounted, but the gap causes visibility issues and image quality degradation
Solution Approach 1:
The light-shielding member acts as a mediator that prevents external light from entering through the gap between the sensor and the hole. By blocking this harmful light path, the solution maintains the optical precision and image quality of the display while preserving the ease of sensor integration through the hole in the cover panel.
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 reduces the external visibility of the sensor and minimizes photoelectric effects, enhancing image quality by reducing gaps and interference, thus improving the integration of sensors within the display module.
Implementation Method 1
a first layer coupled to the first panel on one surface thereof and a second layer coupled to the first layer on an opposite surface of the one surface of the first layer, the opening corresponding to an area on which a first opening formed in the first layer and a second opening formed in the second layer overlap each other
Data Source
AI summary
An electronic device according to various embodiments can comprise: a housing; a display module including a first panel including a first surface, a second surface facing the first surface, and a plurality of pixels disposed between the first surface and the second surface, a cover layer disposed on the first surface of the first panel and forming one surface of the housing, and a second panel disposed on the second surface of the first panel; and a sensor coupled to the second surface of the first panel and forming a sensing area in the one surface of the housing.