Single-Type MOS Display Circuitry for Lower-Cost Area Expansion
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Solution Overview
Problem
Existing display technologies, particularly OLED displays, face challenges in reducing manufacturing costs while maintaining high performance and expanding display areas.
Innovation Solution
Incorporating a display device with a display panel featuring a p-type semiconductor substrate, deep-n-well regions, and single-type MOS transistors, including p-type and n-type MOS transistors, and a circuit board arrangement that reduces complexity and enhances manufacturing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional display technologies are used, then manufacturing costs are high, but display area expansion and performance maintenance become difficult
Solution Approach 1:
The display device is divided into a display panel and a separate driver module, allowing independent optimization of each component. The driver module can be separately manufactured and tested, reducing overall manufacturing complexity and cost while enabling flexible display area expansion through modular design.
Solution Approach 2:
The patent transitions from planar circuit arrangements to a three-dimensional stacked architecture, with the driver module positioned below the display panel and connected via through-panel conductors. This vertical integration reduces the area occupied by driver circuits, enabling greater display area expansion without proportionally increasing manufacturing complexity.
2Area of stationary object
If display area is expanded, then manufacturing complexity increases, but cost reduction becomes difficult
Solution Approach 1:
By segmenting the display device into independent display panel and driver module components, the patent enables parallel manufacturing processes. Each module can be manufactured, tested, and assembled separately, reducing the complexity impact of large display area expansion while maintaining cost efficiency through standardized production techniques.
Solution Approach 2:
The driver module design incorporates universal connection interfaces and standardized through-panel conductor patterns that can accommodate various display panel sizes. This multi-functionality allows the same driver module architecture to serve different display area configurations, reducing manufacturing complexity despite display area expansion.
3Ease of manufacture
If single-type MOS transistors are used in driving circuits, then manufacturing cost is reduced, but circuit performance may be compromised
Solution Approach 1:
The patent applies different transistor types strategically within the driver module based on local functional requirements. Critical signal processing circuits use high-performance transistor configurations, while less demanding functions use simpler single-type MOS transistors. This localized optimization maintains circuit performance where needed while reducing manufacturing costs in less critical areas.
Solution Approach 2:
The driver module incorporates transistor designs with adjustable electrical parameters, allowing optimization of key performance metrics such as threshold voltage and channel width. By carefully controlling transistor parameters, the patent achieves acceptable circuit performance using single-type MOS transistors, thereby reducing manufacturing complexity and cost while maintaining functional reliability.
Data Source
AI summary
The present disclosure relates to a display device capable of reducing manufacturing costs, and an optical device including the same. According to one or more embodiments, a display device includes a display panel having a display area and a non-display area, a pixel in the display area, and including a pixel circuit, a circuit board connected to the non-display area, a first driving circuit on the display panel, and a second driving circuit on the circuit board, wherein the first driving circuit and the pixel circuit include single-type MOS transistors.