Display panel, display apparatus, and method for manufacturing display panel
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Solution Overview
Problem
Current OLED display products face operational performance issues that need to be improved, particularly in terms of reducing crosstalk among carriers and enhancing touch performance while maintaining high light transmittance.
Innovation Solution
The display panel incorporates an isolation structure that partitions light-emitting units and includes a touch layer with insulated touch and virtual electrodes, connected via connection segments to a blocking signal, reducing interference and stabilizing potential, thus improving operational performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional OLED display structure is used, then the manufacturing process is relatively simple, but crosstalk among carriers occurs and operational performance deteriorates
Solution Approach 1:
The display panel is divided into a display region and a light transmission region, with the light transmission region further divided into a first light transmission region and a second light transmission region. This segmentation allows different regions to have different functional characteristics, reducing carrier crosstalk while maintaining manufacturing feasibility.
Solution Approach 2:
Different regions of the display panel are assigned different properties: the display region contains light-emitting units with specific electrode structures, while the light transmission regions have optimized transmittance characteristics. The first and second light transmission regions have different light transmittance values, creating local quality variations that improve overall operational performance.
2Illumination intensity
If light transmittance is increased in the light transmission region, then optical performance is improved, but carrier crosstalk increases
Solution Approach 1:
The light transmission region is segmented into a first light transmission region and a second light transmission region with different light transmittance values. This allows the first region to provide high transmittance for optical performance while the second region can be optimized to reduce carrier crosstalk, resolving the contradiction between light transmittance and carrier interference.
3Ease of manufacture
If touch electrode structure is simplified, then manufacturing is easier, but touch performance and signal stability deteriorate
Solution Approach 1:
The touch layer is designed with a multi-layer stacked structure including a first conductive layer and a second conductive layer. This three-dimensional arrangement allows the touch electrodes to be positioned at different heights, reducing signal interference while maintaining manufacturing simplicity. The stacked configuration provides signal stability without requiring complex single-layer patterns.
4Reliability
If virtual electrodes are added to the light transmission region, then carrier crosstalk is reduced, but device complexity increases
Solution Approach 1:
The virtual electrodes in the light transmission region serve multiple functions: they act as blocking electrodes to prevent carrier crosstalk, maintain electrical potential in the light transmission regions, and work in conjunction with the touch electrodes for touch sensing. This multi-functionality reduces the need for additional separate structures, minimizing device complexity while achieving crosstalk reduction.
Data Source
AI summary
A display panel, a display apparatus, and a method for manufacturing a display panel, and the display panel includes a base plate, an isolation structure, and a touch layer. The isolation structure is provided on the base plate, and encloses and forms a plurality of isolation openings configured to partition the light-emitting layer to form partitioned light-emitting units. The isolation structure is provided with a light transmission opening, so that a light transmittance of the display panel can be increased. The touch layer is located on a side of the isolation structure away from the base plate, and includes a touch electrode and a virtual electrode spaced apart and insulated from each other, the virtual electrode and the touch electrode are spaced apart and insulated from each other, the virtual electrode includes a first virtual electrode at least partially located in the light transmission region.