Display Substrate Wiring Layout to Reduce Camera-Area Grating
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Solution Overview
Problem
Existing display technologies face challenges in achieving full-screen designs due to components like cameras and sensors occupying display areas, leading to reduced screen-to-body ratio and visual impact from grating effects caused by pixel circuit lines, which affect imaging quality.
Innovation Solution
A display substrate design with a light transmissive area where pixel circuits are relocated to the peripheral display area, using transparent connection lines to maintain display functionality while improving light transmittance and reducing grating effects by optimizing connection line arrangement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If pixel circuits are retained in the area provided with the camera, then display functionality is maintained, but light transmittance is reduced and photographing effect is compromised
Solution Approach 1:
The display area is segmented into a first display area (with pixel circuits and light-emitting elements) and a second display area (without light-emitting elements but with pixel circuits). This segmentation allows the camera area to have high light transmittance while other areas maintain full display functionality.
Solution Approach 2:
Pixel circuits are relocated from the vertical stack beneath the display area to the peripheral display area, utilizing horizontal space instead of vertical stacking space. This dimensional change allows the camera area to transmit light without compromising display functionality elsewhere.
2Illumination intensity
If pixel circuits are relocated to peripheral display area, then light transmittance is improved, but connection line complexity increases causing grating effects
Solution Approach 1:
Connection lines are extracted from the camera area and routed through the peripheral display area. By removing connection lines from the light transmissive area, grating effects are eliminated while light transmittance is maximized.
Solution Approach 2:
Different areas of the display have different structural characteristics: the camera area has no connection lines for high light transmittance, while the peripheral area contains all necessary connection lines and pixel circuits. This local differentiation resolves the grating effect problem.
3Ease of operation
If connection lines are arranged to connect pixel circuits in peripheral area, then display functionality is maintained, but manufacturing complexity increases
Solution Approach 1:
The connection lines for both the first and second display areas are merged into a unified routing structure through the peripheral display area. This consolidation simplifies the manufacturing process compared to having separate routing paths.
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
Enhances light transmittance and reduces grating effects, allowing for higher pixel density and improved display resolution in the light transmissive area, thus maintaining visual quality and enabling full-screen display capabilities.
Implementation Method 1
liquid crystal molecules cannot be sufficiently realigned in response to a driving signal
Data Source
Figure 1A~1B
Figure 1C~1F
Figure 2A~2B
AI summary
A display substrate and a display device. The display substrate comprises a base substrate, a plurality of first connection wirings, and a plurality of second connection wirings. The base substrate comprises a display area, the display area comprises a first display area and a second display area, the first display area comprises a plurality of first light-emitting devices and a plurality of second light-emitting devices, and the second display area comprises a plurality of first pixel circuits and a plurality of second pixel circuits. At least a portion of the plurality of first connection wirings extends along a first direction, at least a portion of the plurality of second connection wirings extends along the first direction, at least a portion of the plurality of first connection wirings is located, in a second direction, on a first side of a row in which a first electrode of the plurality of first light-emitting devices and the plurality of second light-emitting devices is located, and at least a portion of the plurality of first connection wirings is located, in the second direction, on a second side of the row in which the first electrode of the plurality of first light-emitting devices and the plurality of second light-emitting devices is located.