In-Display Gate and Emission Control Layout for Smaller Frames
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Solution Overview
Problem
Existing display panels for small-sized wearable devices face challenges in achieving a smaller frame size while maintaining display uniformity and resolution due to the placement of driving circuits in peripheral areas.
Innovation Solution
The display panel design incorporates cascaded multistage gate and light-emitting control driving units within the display area, with gate and light-emitting control driving sub-circuits spaced apart by pixel driving circuits, reducing the frame size and optimizing signal line placement to enhance resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If driving circuits are placed in peripheral areas, then device complexity is reduced, but frame size cannot be minimized
Solution Approach 1:
The driving circuits are segmented into multiple stages (first stage, second stage, third stage) and distributed across different peripheral areas. Each stage drives a specific region of sub-pixels, allowing the frame size to be minimized while maintaining functional separation and reducing placement complexity through modular organization.
Solution Approach 2:
The patent utilizes multiple spatial dimensions by placing driving circuits in different peripheral areas (first peripheral area, second peripheral area, third peripheral area) rather than concentrating them in a single location. This dimensional distribution enables compact frame size while managing circuit complexity through spatial separation.
2Length of moving object
If driving circuits are integrated within display area, then frame size is reduced, but manufacturing precision requirements increase
Solution Approach 1:
Signal lines are segmented into distinct groups (first signal lines, second signal lines, third signal lines) that are spatially separated and routed through different regions. This segmentation reduces manufacturing precision requirements by avoiding complex overlapping routing while achieving compact frame size through organized distribution.
Solution Approach 2:
Different regions of the display panel are assigned different signal line configurations and driving circuit stages. The first peripheral area contains first signal lines for first stage driving, the second peripheral area contains second signal lines for second stage driving, and the third peripheral area contains third signal lines for third stage driving. This local differentiation simplifies manufacturing by reducing cross-region interference.
3Stability of the object's composition
If multistage driving units are used, then display uniformity is improved, but device complexity increases
Solution Approach 1:
The driving function is segmented into multiple stages, with each stage responsible for driving a specific region of sub-pixels. The first stage drives first region sub-pixels, the second stage drives second region sub-pixels, and the third stage drives third region sub-pixels. This segmentation improves display uniformity by enabling region-specific optimization while keeping each stage's circuit structure relatively simple.
Solution Approach 2:
Each driving circuit stage is designed with universal functionality to drive multiple types of signal lines (gate lines, light-emitting control lines, initialization lines, reset lines) within its region. This multi-functionality reduces overall device complexity by using standardized driving units rather than requiring specialized circuits for each signal type.
Data Source
AI summary
Provided are a display panel and a manufacturing method thereof, and a display device. The display panel includes: a base substrate including a display area and a peripheral area; a plurality of sub-pixels, each sub-pixel including a light-emitting element and a pixel driving circuit; a plurality of gate lines and light-emitting control lines; a gate driving circuit located at the display area and including cascaded multistage gate driving units, one or more stages include gate driving sub-circuits including a first and a second gate driving sub-circuit spaced apart by pixel driving circuits of a first group of sub-pixels; and a light-emitting control driving circuit located at the display area and including cascaded multistage light-emitting control driving units, one or more stages include light-emitting control driving sub-circuits including a first and a second light-emitting control driving sub-circuit spaced apart by pixel driving circuits of a second group of sub-pixels.