Display Circuit Layering for Narrow-Bezel Color Conversion Panels
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Solution Overview
Problem
Existing display devices face limitations in reducing the non-display area where the non-display area where the driving circuits are disposed, making it difficult to minimize the width of the non-display area where the non-display area where the non-display area is disposed, making it difficult to minimize the bezel width, and thus it is difficult to minimize the bezel width, and thus it is difficult to maximize the bezel width, and thus it is difficult to maximize the bezel width, and thus it is difficult to maximize the bezel width, and thus it is challenging to reduce the non-display area where the non-display area where the non-display area is disposed, and thus it is challenging to reduce the dead space of the display device.
Innovation Solution
The display device incorporates embedded circuits, such as demultiplexing driving circuits, within the display area to reduce the dead space traditionally occupied by these circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If driving circuits are disposed in the non-display area, then the circuits can be easily organized and connected, but the non-display area width increases, reducing the display surface area
Solution Approach 1:
The patent moves the embedded circuit from the traditional planar non-display area into the display area by utilizing the third dimension (depth/layers). The circuit is formed in a lower layer while pixel circuits are in upper layers, allowing vertical stacking that reduces the horizontal footprint of the non-display area and increases display surface area.
2Measurement precision
If resolution of display devices increases, then image quality improves, but driving circuits become more complicated and require more space
Solution Approach 1:
The patent resolves the space requirement of complex driving circuits by transitioning to a three-dimensional layered structure. The embedded circuit operates in a lower layer while pixel circuits occupy upper layers, allowing high-resolution display with complex driving circuits without increasing the horizontal area, thus maintaining image quality while managing circuit complexity.
Solution Approach 2:
The patent embeds the driving circuit within the display structure by placing it in a lower layer that is nested beneath the pixel circuit layers. This nesting approach allows the complex driving circuit to be contained within the display area footprint, supporting high resolution without proportionally increasing the required device area.
3Area of moving object
If embedded circuit is disposed in the display area, then the non-display area is reduced, but circuit elements must be strategically positioned to avoid interfering with display pixels
Solution Approach 1:
The patent simplifies the positioning challenge by using vertical layer separation. The embedded circuit is confined to a lower layer while pixel circuits occupy upper layers, eliminating horizontal interference concerns. This dimensional separation automatically resolves positioning conflicts and reduces the non-display area without adding positioning complexity.
Data Source
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AI summary
A display device includes: a display area and a non-display area positioned around the display area and including a pad portion and a contact portion that is disposed between the display area and the pad portion; a first circuit portion including an embedded circuit disposed in the display area, a first connection electrode disposed in the pad portion, and a second connection electrode disposed in the contact portion; and a second circuit portion disposed on a layer different from the first circuit portion and including a pixel disposed in the display area, a pad disposed in the pad portion, and a data line extending across the contact portion and the display area and electrically connected to the pixel. The pad is electrically connected to the embedded circuit through the first connection electrode. The data line is electrically connected to the embedded circuit via the second connection electrode.