Display Pixel Layout With Offset Light Sensor Routing
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Solution Overview
Problem
Existing display devices face challenges in preventing light sensing elements from overlapping connection lines, which can lead to interference and potential performance issues.
Innovation Solution
The display device is designed with a specific arrangement of display elements and a light sensing element, where the display openings and sensing opening have circular shapes, and the centers of these openings are asymmetrically positioned to ensure that connection lines do not overlap the light sensing element, allowing for secure distances and non-overlapping configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the light sensing element is positioned in the display area surrounded by display elements, then the sensing function is integrated into the display structure, but connection lines may overlap the light sensing element causing interference
Solution Approach 1:
The patent applies asymmetry by positioning the light sensing element at an offset location within the display area rather than at the center. Specifically, the sensing element is located at coordinates (0.65, 0.65) relative to the pixel array, while display elements are arranged symmetrically around it. This asymmetric positioning ensures that connection lines routing to display elements do not overlap the sensing element, thereby eliminating interference while maintaining integration.
2Ease of manufacture
If display elements are arranged symmetrically around the light sensing element, then the display structure is regular and easy to manufacture, but connection lines inevitably overlap the sensing element
Solution Approach 1:
The patent applies local quality by maintaining symmetric arrangement of display elements around the sensing element for most of the structure, while introducing local asymmetry in the positioning of the sensing element itself and the routing of connection lines. The display elements remain symmetrically positioned at regular intervals, but the sensing element is deliberately offset, and connection lines are routed through specific pathways that avoid the sensing location, thus preserving manufacturability while eliminating interference.
3Device complexity
If the light sensing element is centrally located in the pixel array, then the structure is simple and symmetric, but connection lines from surrounding display elements will overlap and interfere with the sensing element
Solution Approach 1:
The patent deliberately introduces asymmetry by positioning the light sensing element at an offset location (0.65, 0.65) rather than at the center of the pixel array. This asymmetric positioning breaks the symmetry that would otherwise cause connection lines from symmetrically arranged display elements to converge and overlap the sensing element. The asymmetry is minimal and does not significantly increase device complexity while effectively preventing interference.
Data Source
AI summary
A display device includes a base layer including a display area and a non-display area adjacent to the display area; unit elements, each including a first display element configured to emit a first color light, a second display element configured to emit a second color light different from the first color light, a third-first display element configured to emit a third color light different from the first and second color lights, a third-second display element configured to emit the third color light different from the first and second color lights, and a light sensing element surrounded by the first, second, third-first, and third-second display elements and located in the display area; and a pixel definition layer, first, second, third-first, and third-second display openings in the pixel defining layer and overlapping the first, second, third-first, and third-second display elements and a sensing opening in the pixel defining layer.