Display Viewing-Angle Segmentation for Lower Selection-Line RC Delay
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Solution Overview
Problem
Display devices in vehicles face challenges in providing information without interfering with vehicle operations, particularly in ensuring that content displayed does not distract the driver, and existing technologies have inefficiencies in controlling viewing angles and selection signal lines.
Innovation Solution
A display device with a substrate divided into areas, where each area can be controlled to have either a wide or narrow viewing angle, using a selection signal pattern to minimize RC delay in selection signal lines, and incorporating optical members to manage viewing angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single selection signal line is used to control viewing angles for the entire display panel, then device complexity is reduced, but signal line load increases and RC delay becomes significant
Solution Approach 1:
The patent divides the display panel into multiple areas (first area and second area) with different viewing angle requirements. Each area is controlled by separate selection signal lines (first selection signal line and second selection signal line), allowing independent control of viewing angles for each area while distributing the signal line load to reduce RC delay.
2Adaptability or versatility
If the display panel is divided into areas with different viewing angles, then adaptability is improved, but device complexity increases
Solution Approach 1:
The display panel is segmented into multiple areas with different viewing angle characteristics. Each area has dedicated selection signal lines that can independently control the viewing angle of that specific area, enabling flexible adaptation to different display scenarios while maintaining manageable complexity through localized control.
Solution Approach 2:
Different areas of the display panel are assigned different viewing angle properties based on their specific requirements. The first area and second area each have their own selection signal lines that control viewing angles locally, allowing each region to have optimized viewing characteristics without affecting other regions.
3Measurement precision
If multiple selection signal lines are used for different pixel rows, then viewing angle control precision is improved, but manufacturing complexity increases
Solution Approach 1:
The patent segments the display panel into areas with different viewing angle requirements and assigns separate selection signal lines to each area. This segmentation enables precise viewing angle control for each region while following systematic fabrication patterns that can be manufactured using standard semiconductor manufacturing processes.
Data Source
AI summary
A display device comprises a substrate comprising a display area and a non-display area disposed to surround the display area; a plurality of pixels disposed in the display area of the substrate; a pad part disposed in the non-display area of the substrate and supplied with a selection signal; a connection line disposed in the non-display area of the substrate, extending in a first direction, and connected to the pad part; a selection signal pattern disposed in the non-display area of the substrate, extending in a second direction different from the first direction, and connected to the connection line; and a selection signal line disposed to extend from the non-display area to the display area of the substrate, connected to the selection signal pattern, and configured to provide the selection signal, which is supplied from the pad part, to the plurality of pixels.