Display Panel Under-Display Camera Light Transmission Structure
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Solution Overview
Problem
Conventional display devices face challenges in integrating optical electronic devices like cameras and sensors without increasing the bezel area or reducing the display area, as these devices need to receive incident light effectively, which often requires them to be exposed on the front surface, compromising design and functionality.
Innovation Solution
A display panel design that incorporates optical electronic devices under the display area or in a lower portion, allowing them to receive light without being exposed on the front surface, by using a light transmission structure and arranging transistors and electrode patterns in a way that reduces the non-display area and improves transmittance, enabling normal light reception and detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If an optical electronic device is located in the front portion of the display device to receive incident light, then the optical electronic device can effectively receive and detect light, but the bezel area increases or the display area is reduced
Solution Approach 1:
The optical electronic device is relocated 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 area minimization. This allows the device to receive light through the display area without increasing the front bezel or reducing the display area.
Solution Approach 2:
A light transmission structure is introduced as an intermediary element between the light source and the optical electronic device. This structure includes light transmission holes in the lower polarizer and corresponding light blocking patterns in the upper polarizer, enabling light to pass through to the rear-side placed optical device while maintaining display functionality.
2Area of stationary object
If an optical electronic device is located under the display area, then the bezel area is reduced, but the optical electronic device cannot effectively receive light
Solution Approach 1:
The light transmission structure serves as a mediator that enables light to reach the optical electronic device located under the display area. The light transmission holes in the lower polarizer and light blocking patterns in the upper polarizer create an optical pathway that allows effective light reception while maintaining the compact design.
3Area of stationary object
If transistors and electrode patterns are arranged to improve transmittance, then the non-display area is reduced, but the manufacturing process becomes more complex
Solution Approach 1:
The source-drain electrode patterns of the transistors and the light blocking patterns are merged into a single integrated structure. This combining of functions allows the same structural element to serve both electrical connection and optical light-blocking purposes, reducing the non-display area while simplifying the manufacturing process by eliminating the need for separate patterns.
Data Source
AI summary
The present disclosure relates to display panels and display devices that are capable of simplifying a manufacturing process and more specifically to: a display area including a 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. A plurality of light emitting elements disposed in the central area and a plurality of light emitting elements and a plurality of transistors including a plurality of source-drain electrode patterns are disposed in the bezel area. There is a connection pattern contacting a first source-drain electrode pattern in the bezel area and extending to a portion of the central area. In one embodiment, one of the plurality of source-drain electrode patterns and the at least one connection pattern are disposed on a same layer and include different materials.