Semiconductor Driver Circuit for Dynamic Display Orientation
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Solution Overview
Problem
Existing semiconductor devices for displays, such as smartphones, lack the ability to dynamically change the orientation of the display from portrait to landscape mode, and they suffer from issues like transistor characteristic degradation, reduced operation speed, and dielectric breakdown.
Innovation Solution
A semiconductor device with a novel structure comprising multiple transistors and capacitors, where the transistors are connected in specific configurations to allow for the switching of display orientation, suppress degradation of transistor characteristics, enhance operation speed, and prevent dielectric breakdown.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a shift register is mounted on a driver circuit for driving a display, then the display can be driven, but the orientation of the display is fixed and cannot be changed
Solution Approach 1:
The patent applies the dynamics principle by making the circuit configuration changeable through transistor switching. The driver circuit can dynamically reconfigure its internal connections to support different display orientations (portrait and landscape modes) by changing the conduction states of specific transistors, thereby transforming a static circuit into a dynamic one that adapts to different operational requirements.
Solution Approach 2:
The patent implements universality by designing a driver circuit that can perform multiple functions - driving displays in both portrait and landscape orientations using the same hardware circuit. The circuit achieves multi-functionality through controlled transistor switching that reconfigures the signal paths, allowing one circuit to serve multiple display orientation requirements without needing separate dedicated circuits for each mode.
2Reliability
If transistors are used in the driver circuit, then the circuit can function, but transistor characteristics degrade over time
Solution Approach 1:
The patent applies preliminary action by proactively managing transistor states to prevent degradation before it occurs. The circuit design includes specific transistors that are switched off during certain operational phases to reduce stress and wear on other transistors. By preemptively controlling which transistors are active and which are in standby or off states, the circuit extends the operational lifespan of individual transistor components while maintaining overall circuit functionality.
3Adaptability or versatility
If more transistors are added to enable orientation switching, then display orientation can be changed, but operation speed decreases
Solution Approach 1:
The patent applies segmentation by dividing the driver circuit into functionally independent transistor groups that can be controlled separately. Instead of using a monolithic control structure, the circuit is segmented into modules where specific transistors handle specific orientation-switching functions. This modular segmentation allows for more efficient signal propagation and reduces the overall switching complexity, thereby maintaining higher operation speeds while still enabling orientation changes.
4Productivity
If transistors operate continuously, then the circuit functions, but dielectric breakdown occurs
Solution Approach 1:
The patent implements periodic action by introducing cyclic switching patterns for the transistors. Instead of continuous operation, transistors are periodically switched between active and inactive states in a controlled manner. This periodic operation allows dielectric layers to recover from electrical stress during off-periods, preventing cumulative damage and dielectric breakdown while maintaining overall circuit productivity through systematic rotation of active transistor elements.
Data Source
AI summary
A semiconductor device or the like with a novel structure that can change the orientation of the display is provided. A semiconductor device or the like with a novel structure, in which a degradation in transistor characteristics can be suppressed, is provided. A semiconductor device or the like with a novel structure, in which operation speed can be increased, is provided. A semiconductor device or the like with a novel structure, in which a dielectric breakdown of a transistor can be suppressed, is provided. The semiconductor device or the like has a circuit configuration capable of switching between a first operation and a second operation by changing the potentials of wirings. By switching between these two operations, the scan direction is easily changed. The semiconductor device is configured to change the scan direction.