Display Device Stiffener and Color-Changing Layer for Bezel Reduction
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Solution Overview
Problem
Display devices face challenges in reducing bezel area size while protecting driving integrated circuits from external forces and foreign substances, leading to potential damage and quality issues.
Innovation Solution
A display device design featuring a stiffener and color-changing layer surrounding the driving integrated circuit, along with an antistatic member, to prevent damage and facilitate quality inspection without separate measurement equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the bezel area is reduced to increase display area, then the display area is improved, but the driving circuit becomes vulnerable to external force and foreign substances
Solution Approach 1:
The patent implements a multi-layer nested protective structure where the encapsulation layer is embedded within the display panel structure, surrounding the driving circuit. This nested configuration allows protection without increasing the external bezel dimensions, as each protective layer is integrated within the existing spatial framework of the display device.
Solution Approach 2:
The patent transitions from two-dimensional planar protection to three-dimensional volumetric protection by forming an encapsulation layer that surrounds the driving circuit in multiple dimensions. This 3D encapsulation structure provides comprehensive protection against external forces and foreign substances while maintaining a compact form factor that does not increase bezel area.
2Reliability
If protective structures are added to protect the driving circuit, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The encapsulation layer serves multiple functions simultaneously: it protects the driving circuit from external forces, prevents ingress of foreign substances, provides structural support, and maintains a compact form factor. This multi-functionality reduces the need for separate protective components, thereby simplifying the overall device structure while enhancing reliability.
Solution Approach 2:
The patent merges the protective function with the existing encapsulation structures of the display panel. The driving circuit is integrated within the same encapsulation layer that protects other display components, consolidating multiple protective functions into a single unified structure rather than adding separate protective elements.
3Reliability
If a printed circuit is bonded to the display panel, then the electrical connection is improved, but the pad area increases and bezel size increases
Solution Approach 1:
The patent employs a flexible printed circuit board (FPCB) that can be bent and folded to achieve compact routing. This flexible circuit film allows electrical connections to be made in a three-dimensional configuration rather than requiring large planar pad areas, thereby maintaining reliable electrical connectivity while minimizing the bezel area occupied by connection structures.
Solution Approach 2:
The patent utilizes vertical and lateral folding of the flexible printed circuit to route connections in three-dimensional space rather than spreading them out in two dimensions. This dimensional transformation allows the electrical connection structure to occupy minimal pad area on the display panel surface while still providing robust electrical connectivity.
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
The solution effectively reduces bezel area size, prevents damage from external forces, and allows for quick identification and correction of process defects, enhancing the reliability and aesthetics of the display device.
Implementation Method 1
a color-changing layer having a color, disposed to surround the driving integrated circuit
Implementation Method 2
a color-changing layer having a color, disposed to surround at least a portion, or all, of the lateral surface of the driving integrated circuit
Data Source
AI summary
The present disclosure relates to display devices, and more specifically, a display device including a display panel including an active area and a non-active area surrounding the active area and including a pad area, a driving integrated circuit disposed in the pad area, a stiffener disposed between the driving integrated circuit and the active area, spaced apart from the driving integrated circuit, and disposed to surround a portion of a lateral surface of the driving integrated circuit, and a color-changing layer having a color, disposed to surround a portion, or all, of the lateral surface of the driving integrated circuit, and overlapping with at least a portion of an upper surface of the stiffener. As the display device includes the color-changing layer, even without separate measurement equipment, quality and a process condition or situation of the display device can be easily checked or identified.