Display Device Frame Region Minimization via Dummy Pixel Optimization
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Solution Overview
Problem
The existing display devices have a large frame region due to the need for dummy pixel portions and code notation, which increases the overall display size, making products less attractive and increasing manufacturing costs, while also limiting the flexibility in positioning components like the source driver and gate driver.
Innovation Solution
The display device incorporates dummy pixel portions with smaller components and a reduced area, eliminating unnecessary features like repair portions, memory circuits, and sensor circuits, and optimizing the layout to allow code notation without increasing the frame region size, enabling a more compact design and greater flexibility in component placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If dummy pixel portions and code notation are provided in the frame region, then code readability and display functionality are ensured, but the frame region area increases making the display device larger
Solution Approach 1:
The patent applies local quality by making the dummy pixel portions have smaller component areas compared to actual pixel portions. The light blocking effect components in dummy pixel portions are specifically designed with reduced dimensions (e.g., smaller semiconductor layers, gate electrodes, and source/drain electrodes) while still maintaining the necessary code notation functionality and electrical connection properties.
Solution Approach 2:
The patent extracts unnecessary features from dummy pixel portions by eliminating repair portions, memory circuits, and sensor circuits that are present in actual pixel portions. This extraction reduces the frame region area while preserving the essential functions of code notation and electrical connectivity.
2Area of stationary object
If the frame region size is reduced to make the display device more compact, then product attractiveness and manufacturing cost improve, but the flexibility in positioning components like source driver and gate driver is limited
Solution Approach 1:
By creating dummy pixel portions with locally optimized smaller components, the patent reduces the overall frame region area required while maintaining sufficient space for essential components like source driver and gate driver, thereby preserving component positioning flexibility within the reduced frame region.
3Stability of the object's composition
If dummy pixel portions include complete pixel structures with repair portions, memory circuits, and sensor circuits, then manufacturing uniformity is maintained, but the frame region area increases unnecessarily
Solution Approach 1:
The patent extracts and removes unnecessary components (repair portions, memory circuits, sensor circuits) from dummy pixel portions while retaining the essential light blocking effect components. This extraction maintains manufacturing uniformity by using the same basic component structures and materials, but eliminates redundant features that would increase frame region area.
Solution Approach 2:
The patent applies local quality by differentiating the component composition between actual pixel portions and dummy pixel portions. Dummy pixel portions use simplified structures with only essential light blocking effect components, while actual pixel portions include complete structures with all functional components, optimizing both manufacturing and space utilization.
Data Source
AI summary
The present invention realizes a display device with dummy pixel portions and a frame region required for the dummy pixel portions and code notation, in which the frame region is minimized while achieving code notation in required size.In a dummy pixel portion (122) of the present display device, the number of gate electrodes in a thin film transistor formed by a semiconductor layer (11) is reduced to two, so that distances from a contact hole (12) to another contact hole (13) and to a through-hole (14) can be shortened as compared to those in pixel formation portions (112a, 112b), making it possible to dispose the contact hole (13) and the through-hole (14) in a lower portion in the figure. In addition, provided in the vicinity of the center of the dummy pixel portion (122) is only an electrode equivalent to a storage capacitance line (170). Thus, a wide transparent region can be ensured to note a code (22) of a sufficient size in the dummy pixel portion (122).