Light Shielding Layer for Display Device Non-Display Region
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Solution Overview
Problem
Display devices face challenges in minimizing the non-display region while preventing circuit elements from being visible externally, which affects the aesthetic and functional integration of display devices in various electronic devices.
Innovation Solution
The design incorporates a base substrate with defined display and non-display regions, where a drive chip overlaps the non-display region, and a signal line group with specific configurations, including a light shielding layer and color filter layer, to minimize the non-display area and conceal circuit elements. The light shielding layer has an optical density of 1.0 to 4.0, and the color filter layer divides the pixel regions with different colors, ensuring the non-display region is minimized and circuit elements are obscured.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the non-display region is minimized to improve display area, then the display area is increased, but circuit elements become visible from the outside
Solution Approach 1:
The patent introduces a light shielding layer disposed at a different vertical dimension (layer) above the connection lines. This spatial separation in the vertical dimension allows the connection lines to extend into the display region while remaining hidden from external view, thus increasing display area without compromising aesthetic appearance.
Solution Approach 2:
The light shielding layer acts as an intermediary element that blocks external visibility of the connection lines. This mediator component is disposed between the connection lines and the external environment, allowing the connection lines to function in the display region while preventing them from being viewed from the outside.
2Area of stationary object
If connection lines are extended into the display region to reduce non-display region, then the non-display region is reduced, but circuit elements become visible from the outside
Solution Approach 1:
The light shielding layer is positioned in the vertical dimension above the connection lines, creating a layered structure. This allows connection lines to occupy display region area while the light shielding layer blocks their visibility from the external horizontal viewing angle, thus reducing non-display region without making circuit elements visible.
Solution Approach 2:
The patent segments the display device into multiple functional layers: connection lines in the lower layer extending into the display region, and a light shielding layer in the upper layer blocking their visibility. This segmentation allows each layer to perform its specific function - electrical connection and visual shielding respectively.
3Object-affected harmful factors
If a light shielding layer is added to conceal circuit elements, then circuit elements are hidden from view, but device complexity increases
Solution Approach 1:
The light shielding layer serves multiple functions simultaneously: it blocks visibility of connection lines from the external environment, and it can be integrated with existing encapsulation or color filter layers in the display structure. This multi-functionality reduces the need for additional separate shielding components, thereby limiting the increase in device complexity.
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 configuration effectively reduces the non-display region, enhances the visual appeal of display devices by minimizing visible circuitry, and improves the integration of display modules in electronic devices by reducing external visibility of non-display areas.
Implementation Method 1
a light shielding layer disposed on the encapsulation layer and configured to overlap the first connection line when viewed in the plane
Data Source
AI summary
A display device includes a base substrate, a drive chip disposed on the base substrate, a signal line group including a first signal line having a first sub line connected to the drive chip and a second sub line which overlaps a display region and is spaced apart from the first sub line when viewed in a plane, an insulating layer disposed on the base substrate, a first connection line including one end connected to the first sub line through a first contact hole and the other end connected to the second sub line through a second contact hole, an encapsulation layer disposed on the insulating layer, a light shielding layer for overlapping the first connection line when viewed in the plane, and a color filter layer which is disposed on the light shielding layer and includes a plurality of color filters divided by the light shielding layer.