OLED Display Module with Overlapping Signal Lines for Higher Transmittance
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Solution Overview
Problem
The transmittance of OLED displays is limited when an optical component is disposed on the back, affecting the performance of the optical component due to reduced light emission.
Innovation Solution
A display module with alternating and overlapping signal lines is designed to reduce diffraction gratings and increase the area of transparent subpixels, enhancing light transmission and improving the daylighting effect of the optical component.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the optical component is disposed on the back of the OLED display, then the structure is simplified, but the transmittance of the OLED display is low (only 3% to 5%), which reduces the amount of light received by the optical component
Solution Approach 1:
The patent changes the arrangement dimension of signal lines from a two-dimensional plane layout to a three-dimensional overlapping configuration. By allowing signal lines to overlap in the vertical dimension (different layers) while maintaining insulation, the design reduces the horizontal space occupied by signal lines, thereby increasing the area available for transparent subpixels and improving light transmittance to the optical component on the back.
Solution Approach 2:
The patent segments signal lines into multiple insulated layers, allowing them to be arranged in different vertical positions. This segmentation enables the signal lines to occupy overlapping projections on the substrate without electrical interference, effectively reducing their blocking impact on light transmission through the display to the optical component.
2Illumination intensity
If signal lines are arranged in alternating and overlapping configuration, then the area of transparent subpixels is increased and diffraction gratings are reduced, but the signal line structure becomes more complex
Solution Approach 1:
The patent merges multiple signal lines into overlapping vertical projections by arranging them in different layers. This combining approach allows signal lines that would normally occupy separate horizontal spaces to be consolidated into overlapping vertical arrangements, reducing their collective blocking area and minimizing diffraction grating effects while maintaining functional independence through insulation.
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 2c
AI summary
This application provides a display module, a display, and a terminal, to improve transmittance of an OLED display. The display module includes: a substrate; a plurality of first signal lines, disposed on the substrate and insulated from each other; a plurality of second signal lines, disposed on the substrate and insulated from each other, where the plurality of second signal lines and the plurality of first signal lines extend in a same direction, are insulated from each other, and are alternately disposed; and at least one first subpixel array, disposed on the substrate, where the first subpixel array includes a plurality of first light-emitting subpixels and a plurality of transparent subpixels, and the plurality of first light-emitting subpixels and the plurality of transparent subpixels are arranged in a mixed manner; a first signal line group is disposed between adjacent rows of subpixels in the first subpixel array, and the first signal line group includes one first signal line and one second signal line; and orthographic projections of the first signal line and the second signal line in at least one first signal line group on the substrate overlap in a region in which the transparent subpixel is located.