Vehicle Display Pixel Layout for Directional Light Separation
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Solution Overview
Problem
Display apparatuses in vehicles face challenges in providing high-quality images while minimizing light interference between the driver and passenger seats, particularly when multiple display units are used in different orientations.
Innovation Solution
A display apparatus with alternating sub-pixels and light-blocking lines that control light emission direction, combined with decoder-type driving circuits to manage gate signals, ensuring optimal image quality and reduced light interference across different display units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple display units are used in different orientations to provide images to both driver and passenger seats, then image coverage and visibility are improved, but light interference between driver and passenger seats increases
Solution Approach 1:
The pixel array is segmented into odd-numbered columns and even-numbered columns, with each segment controlled by separate driving circuits. This segmentation allows independent control of light emission in different regions, enabling the system to direct light to specific viewing zones (driver seat or passenger seat) while preventing light from reaching other zones, thus reducing light interference between seats.
Solution Approach 2:
Different regions of the display (odd columns vs. even columns) are assigned different functional qualities through separate driving circuits. The first driving circuit controls light emission toward the driver seat while the second driving circuit controls light emission toward the passenger seat. This local differentiation of functional quality allows each region to optimize its light emission characteristics for its intended viewing direction, reducing cross-interference.
2Object-affected harmful factors
If light-blocking lines are added to control light emission direction, then light interference is reduced, but device complexity increases
Solution Approach 1:
The display structure employs asymmetric control where light-blocking lines are selectively positioned only on specific sides of pixels in odd-numbered columns (first direction side) rather than symmetrically on all sides or on even-numbered columns. This asymmetric arrangement, combined with separate driving circuits for odd and even columns, enables directional light control with minimal structural addition, reducing overall device complexity compared to symmetric full-side blocking approaches.
Data Source
AI summary
A display apparatus includes a first display unit including a plurality of first pixels and light-blocking lines that are, in a plan view, located only on a first direction side of each of pixels of first pixels that are in odd-numbered columns, the light-blocking lines extending in a second direction crossing a first direction, a first driving circuit electrically connected to first gate lines configured to provide a first gate signal to the pixels of the first pixels that are in the odd-numbered columns, and a second driving circuit electrically connected to second gate lines configured to provide a second gate signal to pixels in even-numbered columns among the plurality of first pixels.