Display Panel Light Transmission Structure for Optoelectronic Integration
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Solution Overview
Problem
Conventional display devices face challenges in integrating optoelectronic devices like cameras and sensors without compromising the display area size, often requiring notches or physical holes that limit design freedom and increase bezel size.
Innovation Solution
A display panel design with a light transmission structure that positions optoelectronic devices below the display area, allowing them to receive light without being exposed on the front, and includes a connection pattern between the bezel and central areas to simplify processing and improve transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If optoelectronic devices are disposed on the front surface of the display device, then light reception is improved, but the bezel size increases or design freedom is limited
Solution Approach 1:
The patent moves the optoelectronic device from the front surface (2D plane) to the rear side of the display panel, utilizing the third dimension (depth) to resolve the conflict between light reception and bezel size. The light transmission structure allows light to pass through the display panel from front to back, enabling the device to receive light without being exposed on the front surface.
Solution Approach 2:
The patent introduces a light transmission structure as an intermediary component that enables light to travel through the display panel to reach the optoelectronic device on the rear side. This mediator resolves the contradiction by providing a pathway for light reception without requiring front surface exposure.
2Reliability
If optoelectronic devices are disposed on the front surface of the display device, then light reception is improved, but design freedom is limited
Solution Approach 1:
By relocating the optoelectronic device to the rear side and using light transmission through the display panel, the patent enables full front surface design freedom while maintaining light reception functionality. The display panel can now be designed without notches or camera holes.
3Reliability
If transistors are disposed in the central area of the optical area, then device functionality is improved, but transmittance is reduced
Solution Approach 1:
The patent divides the optical area into two distinct zones: a central area free of transistors for optimal light transmission to the optoelectronic device, and a bezel area containing the transistors and connection patterns. This segmentation allows each zone to fulfill its specific function without compromising the other.
Solution Approach 2:
The patent applies different functional qualities to different regions: the central area is optimized for light transmission (high transmittance, no active devices), while the bezel area is optimized for electrical connectivity (contains transistors and connection patterns). This local differentiation resolves the contradiction between functionality and transmittance.
4Reliability
If connection patterns are formed above source-drain electrode patterns, then electrical connectivity is achieved, but processing complexity increases
Solution Approach 1:
The patent merges the connection pattern formation with the source-drain electrode pattern formation into a single patterning step. By forming both patterns simultaneously in the same etching process, the patent achieves electrical connectivity while reducing processing complexity and eliminating the need for separate patterning steps.
Data Source
AI summary
Provided is a display device including a display panel including a display area including a first optical area, the first optical area including a central area and a bezel area located outside of the central area, and a normal area located outside of the first optical area. The display panel includes a plurality of emitting devices disposed in the central area, a plurality of emitting devices disposed in the bezel area, and a plurality of transistors disposed in the bezel area and including a plurality of source-drain electrode patterns. A connection pattern extends from the bezel area to a portion of the central area. The connection pattern is located below at least one of the source-drain electrode patterns and in contact with the source-drain electrode patterns.