Pixel Circuit Welding Transistor for Switchable Display Resolution
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Solution Overview
Problem
Current display devices lack the ability to seamlessly switch between high and low resolution modes, gray scale modes, and require separate designs for different resolution specifications, leading to increased manufacturing costs and process times.
Innovation Solution
A display device with a display panel comprising first and second pixel areas, each with sub-pixels and pixel circuits, including a welding transistor that connects adjacent pixel circuits to adjust resolution and supply driving current to light emitting diodes, allowing for operation in both high and low resolution modes and gray scale modes, while unifying manufacturing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a display device is designed for high resolution mode, then the resolution is improved, but the manufacturing cost and process time increase when low resolution mode is also required
Solution Approach 1:
The display device is designed with a universal pixel structure that can function in both high resolution and low resolution modes. The welding transistor enables the same physical pixel to serve multiple functions by selectively connecting to adjacent pixels, allowing one display device to replace multiple dedicated devices and reducing manufacturing complexity.
Solution Approach 2:
The display device employs dynamic reconfiguration of pixel connections through the welding transistor. By controlling the welding transistor's on/off state, the pixel circuit can dynamically switch between operating as a standalone high-resolution pixel and merging with adjacent pixels for low-resolution operation, adapting to different display requirements without physical reconfiguration.
2Measurement precision
If a display device is designed for high resolution mode, then the resolution is improved, but the device complexity increases
Solution Approach 1:
Adjacent pixel circuits are merged through the welding transistor to form composite pixels for low-resolution mode. This merging approach reduces the effective number of active pixels while utilizing the same physical structure, thereby reducing device complexity without requiring separate hardware for low-resolution operation.
Solution Approach 2:
The pixel circuit and welding transistor structure serves dual purposes: individual pixel operation for high resolution and combined pixel operation for low resolution. This multi-functionality eliminates the need for separate circuitry for different resolution modes, simplifying the overall device architecture.
3Illumination intensity
If welding transistor is used to connect adjacent pixel circuits, then the luminance is improved in low resolution mode, but the device complexity increases
Solution Approach 1:
The welding transistor merges adjacent pixel circuits into a single functional unit for low-resolution mode. This merging allows the combined pixel to receive and process higher current, resulting in improved luminance output while utilizing existing pixel structures rather than adding separate high-power components.
Solution Approach 2:
The welding transistor acts as an intermediary element that enables current sharing and merging between adjacent pixel circuits. This intermediary component facilitates high-current operation for improved luminance without requiring direct modification of the pixel circuitry itself, maintaining modularity and reducing overall complexity.
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
Enables efficient switching between high and low resolution modes and gray scale modes, reducing manufacturing costs and process times by using a single design for different resolution specifications, and improving luminance in low resolution mode by transferring driving current between pixel areas.
Implementation Method 1
a welding transistor which selectively connects the pixel circuits of the first pixel area and a second pixel area which are adjacent to each other, among the plurality of first pixel areas and the plurality of second pixel areas. Accordingly, the welding transistor is used to further supply a driving current of the pixel circuit to the light emitting diode of an adjacent sub pixel to improve the luminance.
Data Source
AI summary
A display device includes a display panel in which a plurality of first pixel areas and a plurality of second pixel areas each including a plurality of sub pixels are defined; a pixel circuit which is disposed in each of the plurality of sub pixels and includes a driving transistor; and a welding transistor which selectively connects the pixel circuits of the first pixel area and a second pixel area which are adjacent to each other, among the plurality of first pixel areas and the plurality of second pixel areas. Accordingly, the welding transistor is used to further supply a driving current of the pixel circuit to the light emitting diode of an adjacent sub pixel to improve the luminance.