Array Substrate Electrode Layout for Voltage-Driven Self-Emissive Displays
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Solution Overview
Problem
Self-luminescence displays face challenges in driving and wiring complexity due to current-driven light-emitting elements, leading to high line losses and increased power consumption, and lack of efficient brightness control.
Innovation Solution
The array substrate design includes a first and second electrode layer with a light-emitting element group, a planarization layer, and a driving circuit layer with switch transistors and capacitors, optimized for current distribution and brightness control, using a voltage-driven approach to reduce wiring complexity and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If current-driven light-emitting elements are used, then the light-emitting elements can be controlled to emit light, but line losses increase and power consumption increases
Solution Approach 1:
The patent inverts the conventional current-driven approach by using voltage-driven light-emitting elements. Instead of controlling light emission through current flow, the invention applies voltage directly to the light-emitting elements, which fundamentally changes the driving mechanism and reduces both line losses and power consumption while maintaining effective light control
Solution Approach 2:
The patent changes the fundamental operating parameter from current to voltage. By transitioning from current-driven to voltage-driven operation, the system achieves lower power consumption and reduced line losses while maintaining the ability to control light emission intensity and timing
2Ease of operation
If current-driven light-emitting elements are used, then the light-emitting elements can be controlled to emit light, but wiring complexity increases
Solution Approach 1:
The patent changes the fundamental operating parameter from current to voltage. By transitioning from current-driven to voltage-driven operation, the system achieves lower power consumption and reduced line losses while maintaining the ability to control light emission intensity and timing
3Illumination intensity
If conventional light-transmission display is used, then the display can show images, but contrast is limited and thickness is increased
Solution Approach 1:
The patent extracts and eliminates the backlight assembly from the display structure. By removing the backlight unit entirely and using self-luminescence display elements that generate their own light, the invention achieves infinite contrast through absolute black states and reduces overall display thickness while maintaining image display capability
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
This design reduces line losses, simplifies wiring, and enables efficient brightness control, achieving high contrast and color depth with reduced power consumption and cost, supporting multi-color displays.
Implementation Method 1
each light-emitting element includes a first electrode, a light emitting layer and a second electrode, the first electrode is coupled to the first electrode layer, and the second electrode is coupled to the second electrode layer, so as to drive the light emitting layer to emit light
Data Source
AI summary
An array substrate and a method for forming the array substrate, a display panel and a display device are provided in the present disclosure. The array substrate includes: a base substrate, a first electrode layer, a first insulating layer and a second electrode layer arranged sequentially on the base substrate, a light-emitting element group located on the second electrode layer, where the light-emitting element group includes one or more light-emitting elements, each light-emitting element includes a first electrode, a light emitting layer and a second electrode, the first electrode is coupled to the first electrode layer, and the second electrode is coupled to the second electrode layer, so as to drive the light emitting layer to emit light.