Panel Driver Integration on Display Substrate
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Solution Overview
Problem
Existing display devices face limitations in minimizing thickness and enhancing aesthetic appeal due to structural constraints, particularly the need for an external case to cover the panel driver, which increases thickness and creates a step difference and wider bezel, detracting from the sense of beauty.
Innovation Solution
The display device design features a panel driver connected to the display panel in the periphery region, with the panel driver attached to the lower surface of the upper substrate, eliminating the need for an external case and allowing the front surface to appear as a single structure, reducing thickness and bezel width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an external case is formed to cover the panel driver, then the panel driver is protected from being exposed, but the thickness of the display device is increased
Solution Approach 1:
The external case and the lower substrate are merged into a single integrated structure. The lower substrate serves dual functions as both the structural base for mounting the panel driver and as the external case that covers and protects the panel driver from external exposure. This integration eliminates the need for a separate external case layer, thereby reducing overall device thickness while maintaining protection functionality.
Solution Approach 2:
The lower substrate is designed to perform multiple functions simultaneously: it acts as the structural foundation for mounting the panel driver, provides electrical connection pathways, and serves as the protective external case. This multi-functionality approach allows the same component to fulfill both protective and structural roles, eliminating the need for additional dedicated protective layers.
2Reliability
If an external case is formed above the upper substrate, then the panel driver is covered, but step difference occurs on the front surface deteriorating sense of beauty
Solution Approach 1:
By merging the external case function into the lower substrate, the invention eliminates the layered structure that caused step differences. The lower substrate maintains a flat front surface that is continuous with the upper substrate, creating a uniform appearance without visible steps or transitions, while still providing coverage and protection for the panel driver through its integrated structure.
3Reliability
If the external case width is increased to prevent panel driver exposure, then the panel driver is fully covered, but the bezel width is increased deteriorating sense of beauty
Solution Approach 1:
The lower substrate is designed with differentiated local qualities: the peripheral region has an extended width that provides coverage for the panel driver, while the central region maintains a minimized width to reduce bezel appearance. This localized variation in dimensions allows the structure to fulfill both coverage and aesthetic requirements simultaneously.
Data Source
AI summary
A display device comprises a display panel including a main display region and a periphery region outside the main display region; and a panel driver connected with the display panel in the periphery region of the display panel, wherein the display panel includes an upper substrate and a lower substrate formed under a lower surface of the upper substrate, and the lower substrate is formed to expose a pad region provided on the lower surface of the upper substrate, and the panel driver is connected to the pad region provided on the lower surface of the upper substrate.