Input Sensor Electrode Layout for OLED Light Interference
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Solution Overview
Problem
Display devices with integrated input sensors face challenges in maintaining visibility of the sensing electrode due to interference from the display panel's light emitting areas, leading to reduced performance.
Innovation Solution
The display device incorporates a sensing electrode design with specific disconnection areas and varying line widths to minimize interference, allowing for improved visibility and functionality of the input sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the sensing electrode is arranged adjacent to color light emitting areas, then the input sensor can be integrated on the display panel, but the visibility of the sensing electrode is reduced due to interference from adjacent color light emitting areas
Solution Approach 1:
A light blocking pattern is introduced as an intermediary element between the sensing electrode and the color light emitting areas. This light blocking pattern selectively blocks light from reaching the sensing electrode from certain directions while allowing light from other directions to pass through, thereby reducing interference from adjacent color light emitting areas while maintaining the integration of the input sensor on the display panel
Solution Approach 2:
The light blocking pattern is designed with spatially varying properties - it is present in certain regions adjacent to the sensing electrode where interference occurs, while being absent in other regions where it would block necessary light. This local variation in the light blocking pattern's presence and position optimizes the balance between reducing interference and maintaining sensor visibility
Data Source
AI summary
A display device including a display panel and an input sensor. The input sensor includes first line elements extending in a second direction and second line elements extending in a first direction. A portion of the disconnection area is defined in at least one of two first line elements on opposite sides of a first color light emitting area among first line elements and defined in at least one of two second line elements disposed on opposite sides of the first color light emitting area among second line elements. A portion of the disconnection area is not defined in one of the two first line elements on the opposite sides of the first color light emitting area, and a portion of the disconnection area is not defined in one of the two second line elements on the opposite sides of the first color light emitting area.