Array Substrate With Optical Signal Transmission
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Solution Overview
Problem
The existing display panels have a large volume due to the need for a space to accommodate the flexible circuit board connecting the array substrate and the driving circuit module, which hinders integration and miniaturization in display technology.
Innovation Solution
The integration of the driving circuit and pixel circuit on the same base substrate, with an electro-optical conversion unit on one surface and a photoelectric conversion unit on the other, allowing for signal transmission through optical means, reducing the panel's volume by eliminating the need for a flexible circuit board.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the array substrate and driving circuit module are electrically connected through a flexible circuit board, then the electrical connection is established, but the display panel volume increases due to the space required for the flexible circuit board
Solution Approach 1:
The patent merges the array substrate and driving circuit module into a single integrated structure by fabricating both circuits on the same substrate. The driving circuit is formed on a first surface of the substrate while the array substrate is formed on a second surface, eliminating the need for separate flexible circuit boards and reducing overall panel volume.
Solution Approach 2:
The patent utilizes the third dimension (thickness direction) by forming the driving circuit on the first surface and the array substrate on the second surface of the substrate. This vertical stacking approach allows both circuits to coexist without requiring lateral space for flexible circuit boards, thereby reducing panel volume while maintaining electrical connection functionality.
2Volume of stationary object
If the driving circuit and pixel circuit are integrated on the same base substrate, then the integration level is enhanced and volume is reduced, but the signal transmission between circuits must be achieved through optical conversion
Solution Approach 1:
The patent introduces an optical signal as an intermediary for signal transmission between the driving circuit and pixel circuit. The driving circuit generates optical signals that pass through the transparent substrate to control the pixel circuit, enabling communication between integrated circuits without direct electrical connection through flexible circuit boards.
Solution Approach 2:
The patent replaces the mechanical/electrical connection system (flexible circuit boards) with an optical signal transmission system. By using optical signals that can pass through the transparent substrate, the invention eliminates the need for physical flexible circuit boards while maintaining signal transmission functionality between the integrated circuits.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances the integration level of the array substrate and reduces the overall volume of the display panel, enabling more compact display devices without compromising signal transmission efficiency.
Implementation Method 1
the electro-optical conversion unit includes an electroluminescent element
Implementation Method 2
the photoelectric conversion unit includes a photoelectric diode
Data Source
AI summary
The present invention provides an array substrate and a display panel. The array substrate comprises a base substrate comprising a first surface and a second surface which is opposite to the first surface, and a pixel circuit arranged on the first surface of the base substrate, wherein the array substrate further comprises a driving circuit, which is arranged on the second surface of the base substrate and is in signal connection with the pixel circuit. The present invention further provides a display panel comprising the array substrate. In the present invention, the driving circuit provides an electrical drive signal required for display to the pixel circuit, and both the driving circuit and the pixel circuit are integrated on the base substrate of the array substrate, thereby improving the degree of integration of the array substrate and reducing the total volume of the display panel.