Transparent Display Pixel Layout for Repair Without Transmittance Loss
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Solution Overview
Problem
Transparent display devices experience a decrease in light transmittance due to repair lines used to address defective subpixels, which reduces the size of the transmissive area.
Innovation Solution
The design incorporates a non-transmissive area with a grid shape surrounding transmissive areas, featuring anode lines that overlap and connect adjacent subpixels of the same color through a welding point, allowing for the connection of defective subpixels to adjacent functioning subpixels without reducing the transmissive area's size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a repair line is introduced to address defective subpixels, then the reliability of the display device is improved, but the light transmittance of the transmissive area deteriorates
Solution Approach 1:
The patent moves the repair line from the transmissive area to the non-transmissive area, changing its spatial dimension. The repair line is configured to extend along the non-transmissive area and connect subpixels through this region, thereby eliminating the blockage of light in the transmissive area while maintaining the repair function.
Solution Approach 2:
The non-transmissive area serves as an intermediary zone that hosts the repair line. By utilizing this intermediate region with lower light transmittance requirements, the patent allows the repair line to function without significantly impacting the overall light transmittance of the display device.
2Ease of repair
If a repair line is introduced to connect defective subpixels, then the ease of repair is improved, but the area of the transmissive area is reduced
Solution Approach 1:
The repair line is repositioned to operate in the non-transmissive area dimension rather than consuming transmissive area. This spatial relocation allows the repair functionality to be added without reducing the effective transmissive area, as the repair line now occupies a different functional zone.
Solution Approach 2:
The display area is segmented into transmissive and non-transmissive regions, with each serving distinct functions. The repair line is assigned to the non-transmissive region, allowing the transmissive area to remain dedicated to light transmission and the non-transmissive area to handle repair and control functions.
3Ease of manufacture
If the transmissive area size is reduced to accommodate repair lines, then the ease of manufacture is improved, but the light transmittance deteriorates
Solution Approach 1:
Instead of reducing the transmissive area to accommodate repair lines, the patent utilizes the non-transmissive area dimension for repair line placement. This approach maintains the original transmissive area boundaries and light transmission characteristics while providing space for repair line integration in the non-transmissive region.
Solution Approach 2:
The non-transmissive area acts as an intermediary space that facilitates repair line integration without compromising transmissive area performance. This intermediate zone absorbs the manufacturing requirements for repair lines while preserving the optical properties of the transmissive region.
Data Source
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AI summary
A transparent display device may prevent deterioration of light transmittance, which is caused by a repair line, from occurring. The transparent display device comprises a substrate provided with transmissive areas, a non-transmissive area disposed between the transmissive areas, and a plurality of subpixels disposed in the non-transmissive area, a first electrode provided in each of the plurality of subpixels, a driving transistor connected with the first electrode of each of the plurality of subpixels, including an active layer, a gate electrode, a source electrode and a drain electrode, a capacitor connected to the driving transistor of each of the plurality of subpixels, including a first capacitor electrode and a second capacitor electrode, and an anode line extended from the first electrode of each of the plurality of subpixels to at least partially overlap a driving transistor or a capacitor of an adjacent subpixel of the same color.