Subpixel LED Series Layout for Auto-Repair Display Panels
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Solution Overview
Problem
Existing display devices face challenges in power consumption and require separate repair processes when light emitting diodes are missing in sub pixels.
Innovation Solution
A display device design where multiple light emitting diodes are connected in series within a sub pixel, allowing automatic repair during manufacturing if one diode is missing, and reducing power consumption through series connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple light emitting diodes are connected in parallel in one sub pixel, then the brightness is improved, but the power consumption increases
Solution Approach 1:
The patent merges multiple light emitting diodes (second and third LEDs) into a series connection configuration within a single sub pixel, combining their light output to achieve sufficient brightness while reducing power consumption compared to parallel connection
2Manufacturing precision
If a separate repair process is implemented for missing light emitting diodes, then the manufacturing precision is improved, but the device complexity increases
Solution Approach 1:
The patent performs preliminary action by pre-configuring the electrical connection structure with reflection electrodes and connection electrodes during the initial manufacturing process, enabling automatic repair functionality to be built-in before any defects occur, eliminating the need for separate repair processes
Solution Approach 2:
The patent implements self-service by designing the electrical connection structure to automatically repair missing light emitting diodes through the pre-configured reflection electrodes and connection electrodes, allowing the device to self-correct defects without external intervention or separate repair processes
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
The design enables automatic repair of missing diodes without additional processes and reduces power consumption by connecting diodes in series, enhancing reliability and efficiency.
Implementation Method 1
a first light emitting diode disposed on one of the first reflection electrode and the second reflection electrode in the first sub pixel
Implementation Method 2
a first reflection electrode and a second reflection electrode disposed on the driving transistor in the first sub pixel
Data Source
AI summary
In one or more examples, a display device includes a substrate, sub pixels including a first sub pixel, a power line disposed, a driving transistor disposed in the first sub pixel, a first reflection electrode and a second reflection electrode disposed on the driving transistor in the first sub pixel, a first light emitting diode disposed on one of the first and second reflection electrodes in the first sub pixel, a first connection electrode electrically connected to the power line, a second connection electrode electrically connected to the driving transistor, and a third connection electrode which is electrically connected to one of the first and second connection electrodes by the other one of the first and second reflection electrodes and is electrically connected to the first light emitting diode. Accordingly, a portion where the light emitting diode is not disposed may be repaired without a separate repair process.