Laminated Display Device with Back-Surface Driving Circuits
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Solution Overview
Problem
Existing display devices face challenges in achieving a narrow frame or non-frame design due to limitations in substrate material and thickness, as well as layout restrictions of peripheral driving circuits, particularly in small or medium-sized displays.
Innovation Solution
The implementation of a display device configuration where a first floor including the driving circuit section and a second floor including the pixel section are laminated, reducing the space required for the driving circuit section in the peripheral region and allowing for a narrow frame or non-frame design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the driving circuit section is disposed in the peripheral region of the pixel section, then the driving circuit can be connected to pixels, but the frame width increases due to space requirements for the driving circuit
Solution Approach 1:
The patent applies dimensionality change by moving the driving circuit section from the peripheral region (2D plane) to the back surface of the substrate (3D space). Specifically, the driving circuit section is formed on the back surface of the substrate in a region overlapping with the pixel section when viewed from the front, thereby utilizing the third dimension (depth/thickness) to reduce the frame width without compromising the driving circuit's functionality.
2Area of stationary object
If the frame is narrowed or removed, then the display area increases, but the driving circuit section lacks sufficient space for proper layout and connection
Solution Approach 1:
The patent resolves the layout difficulty by transitioning to three-dimensional arrangement. The driving circuit section is positioned on the back surface of the substrate, allowing flexible layout design that is not constrained by the peripheral region limitations. This enables proper circuit layout and connections while maintaining a narrow or non-existent frame, thereby increasing the effective display area.
3Length of moving object
If substrate material or thickness is used to bend the frame portion, then frame narrowing is achieved, but the method is not universally applicable to all substrate materials and thicknesses
Solution Approach 1:
The patent provides a universally applicable solution by using the back surface of the substrate for the driving circuit section, regardless of substrate material or thickness. This approach does not rely on mechanical bending properties of specific materials but rather utilizes the available three-dimensional space, making it adaptable to various substrate materials and thicknesses while consistently achieving frame narrowing.
Data Source
AI summary
A display device includes a pixel section that includes a plurality of pixels each of which has a display element and which are disposed in a two-dimensional manner, and a driving circuit section that drives the plurality of pixels in order to perform display, in which a first floor including the driving circuit section and a second floor including the pixel section are laminated.