Display Panel Touch Electrode Integration for Borderless Full-Screen
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing large-screen displays face challenges in achieving full-screen display due to protruding borders from infrared or external-mounted capacitive touch controls, which hinder the realization of high-end market demands for education and full-plane display.
Innovation Solution
A display panel design integrating a first touch control electrode directly connected to a touch control drive device via perforations in the substrate, eliminating the need for external borders by integrating the touch control layer within the substrate, allowing for seamless splicing and complete elimination of splice seams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If infrared touch control is used, then the cost is low, but the border surface protrudes 13.6 mm causing poor appearance and inability to realize full-plane display
Solution Approach 1:
The patent merges the touch control layer with the display substrate by integrating touch control electrodes directly into the substrate structure. The touch control electrodes are formed in the same planarization layer as the display electrodes, eliminating the need for separate external touch control components and their associated protruding borders.
Solution Approach 2:
The patent transitions from a three-dimensional protruding border structure to a two-dimensional planar structure by embedding the touch control electrodes within the substrate plane. This dimensional change allows the touch control function to be achieved without adding vertical height, enabling full-plane display.
2Area of stationary object
If external-mounted capacitive touch control is used, then full-screen display is attempted, but borders still exist unfavorable for realizing full-screen display
Solution Approach 1:
The patent combines the touch control functionality with the display substrate by forming touch control electrodes within the substrate's planarization layer. This integration eliminates the need for external-mounted components that create borders, achieving true full-screen display without any border obstructions.
3Area of stationary object
If touch control layer is integrated within substrate, then touch control borders are eliminated, but electrical connection complexity increases
Solution Approach 1:
The patent segments the electrical connection structure into multiple functional layers: touch control electrodes in the planarization layer, via holes for vertical connection, and connection to drive circuits in the active layer. This segmentation organizes the complexity into manageable, standardized components that simplify the overall integration process.
Solution Approach 2:
The patent uses vertical via holes to connect the touch control electrodes in the planarization layer to the drive circuits in the active layer. This three-dimensional connection approach through the substrate thickness manages the electrical connection complexity by utilizing the vertical dimension rather than requiring complex lateral routing.
Data Source
AI summary
A display panel and an electronic device. The display panel includes at least one first display substrate. The first display substrate includes a drive device layer, a first insulating layer, a first touch control layer, a light-emitting device binding layer, and a light-emitting device. The first touch control layer is provided with a number of first touch control electrodes. The first touch control electrode is electrically connected to a first touch control drive device through a first via hole penetrating the first insulating layer.