Display Panel Scanning-Line Routing for Uniform O-Cut Displays
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Solution Overview
Problem
The load of signal lines in the O-cut area of existing display devices is inconsistent with the load of signal lines in other areas, leading to uneven display.
Innovation Solution
The display panel design includes first and second scanning signal lines with specific parts that bypass the hole-digging area, ensuring consistent impedance and load with other areas by connecting adjacent rows through additional parts, reducing the border of the O-cut area and increasing the screen proportion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If signal lines are combined into one wiring to bypass the O-cut area, then the border of the O-cut area is reduced and screen ratio is increased, but the load of signal lines in the O-cut area becomes inconsistent with other areas, resulting in uneven display
Solution Approach 1:
The patent applies local quality by differentiating the structure of scanning signal lines in the O-cut area from those in other areas. Specifically, signal lines in the O-cut area are divided into first and second parts that bypass the hole-digging area separately, while signal lines in other areas remain as single continuous lines. This local structural differentiation ensures that the load characteristics are optimized for each specific area, resolving the display uniformity issue while maintaining the reduced border design.
Solution Approach 2:
The patent segments the scanning signal lines in the O-cut area into multiple parts (first part and second part) that bypass the hole-digging area through different paths. This segmentation allows each part to be independently optimized for load consistency, preventing the uneven display phenomenon that would result from combining all signal lines into a single wiring configuration.
2Manufacturing precision
If scanning signal lines bypass the hole-digging area through separate paths, then load consistency is improved and display uniformity is achieved, but the border of the O-cut area increases and screen proportion decreases
Solution Approach 1:
The patent utilizes the two-dimensional layout space by routing the first and second parts of the scanning signal lines through different spatial paths around the hole-digging area. By employing dimensional routing strategies, the signal lines can bypass the O-cut area while minimizing the border width, thus achieving a balance between display uniformity and screen ratio.
3Area of stationary object
If O-cut area border is reduced by combining signal lines, then screen proportion is increased, but electrical connection consistency between signal lines on both sides of the O-cut area deteriorates
Solution Approach 1:
The patent segments the scanning signal lines into multiple independent parts that bypass the hole-digging area separately. This segmentation ensures that each signal line maintains its own electrical connection path, preventing interference and maintaining consistent electrical characteristics across the O-cut area, thereby improving reliability while still achieving a compact border design.
Data Source
AI summary
A display panel and a display device are provided. The display panel includes a display area and a hole-digging area surrounded by the display area. The display panel includes a plurality of first scanning signal lines. The plurality of first scanning signal lines include a plurality of first type scanning signal lines. Each of the first type scanning signal lines includes a first part, a second part, and a third part. The first part and the second part are respectively located on opposite two sides of the hole-digging area and extend along a first direction. The third part is connected between the first part and the second part. An extension line of the first part passes through the hole-digging area. A unit length impedance of the third part is greater than a unit length impedance of the first part and a unit length impedance of the second part.