Display Panel Photosensitive Region Integration
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Solution Overview
Problem
Conventional display panels face challenges in achieving a high screen occupancy ratio due to the limited space for camera assemblies in border regions, which also leads to reduced ambient light usage and inferior imaging quality.
Innovation Solution
A display panel design where a partial region of the display area is reused as a photographing photosensitive region, integrating photosensitive elements close to the substrate to minimize space usage and enhance light transmission, allowing for both image display and photography functions while improving screen occupancy and imaging quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a camera assembly is arranged in the border region, then the photographing function is achieved, but the screen occupancy ratio is reduced and the position is limited
Solution Approach 1:
The patent merges the photographing function with the display region by integrating photosensitive elements directly into the display region, allowing the same area to serve both display and photographing purposes, thereby eliminating the need for separate border region camera assemblies and improving screen occupancy ratio
Solution Approach 2:
The display region is designed to perform multiple functions: it can display images through pixel units and simultaneously capture images through photosensitive elements, making the display region a multi-functional area that improves both screen occupancy and photographing capability
2Device complexity
If the camera assembly is placed in the border region, then the structure is simple, but the ambient light loss increases and imaging quality deteriorates
Solution Approach 1:
The patent transitions from a planar arrangement where the camera is placed in the border region to a vertical integration approach where photosensitive elements are positioned within the display region's layered structure, allowing light to be captured directly at the source without traversing through additional layers that cause loss
Solution Approach 2:
The patent introduces a transparent electrode as an intermediary structure that allows ambient light to pass through to the photosensitive elements while maintaining electrical functionality, thereby reducing light loss compared to opaque border region placements
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
This design enhances the screen occupancy ratio, reduces light loss during imaging, and improves the overall imaging quality by allowing ambient light to be efficiently converted into electrical signals for image generation.
Implementation Method 1
a partial region of the display region is reused as a photographing photosensitive region... the plurality of photosensitive elements is located on a side of the planarization layer facing the first substrate
Data Source
AI summary
The present disclosure provides a display panel, a display device, and a method for driving a display device. The display panel has a display region, a partial region of which is reused as a photographing photosensitive region. The display panel includes: a first substrate; a second substrate disposed opposite to the first substrate; a plurality of pixel units disposed in the display region, and a plurality of photosensitive elements disposed in the photographing photosensitive region. The first substrate is located on a side of the second substrate facing a light-emitting surface, the plurality of pixel units is formed on the second substrate, each of the plurality of pixel units includes a pixel circuit and a light-emitting element, and a planarization layer is arranged between the pixel circuit and the light-emitting element, and the plurality of photosensitive elements is located on a side of the planarization layer facing the first substrate.