Display Panel Anode Isolation for Under-Screen Camera Regions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The sputtering film forming process for forming transparent anodes in the under-screen camera technology affects the light emission characteristics and display effect of normal display regions in display panels, due to changes in the physical and chemical characteristics of the planarization layer.
Innovation Solution
Incorporating at least one isolation structure in the first display region, which is conductively connected between the anode of each light-emitting structure and the corresponding pixel driver circuit, and covers the anode in the opening region of the light-emitting structures, thereby achieving effective isolation between the anodes and the planarization layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the sputtering film forming process is used to form transparent anodes in the under-screen camera region, then the photosensitive device can collect light through the display region, but the light emission characteristics and display effect of normal display regions are affected
Solution Approach 1:
The patent divides the anode structure into multiple segments: a first anode in the normal display region, a second anode in the under-screen camera region, and an anode connection layer connecting them. This segmentation allows each part to be optimized independently - the first anode for light emission in normal regions, the second anode for light transmission in the camera region, resolving the contradiction between light transmission and display effect
Solution Approach 2:
The patent applies different material compositions and structures to different regions: the first anode uses a specific transparent conductive oxide for optimal light emission, while the second anode uses a different composition optimized for light transmission. The anode connection layer has intermediate properties to bridge both requirements. This local quality differentiation resolves the contradiction by optimizing each region for its specific function
2Adaptability or versatility
If the sputtering process forms transparent anodes across the entire substrate, then the under-screen camera function is achieved, but the physical and chemical characteristics of the planarization layer change, causing abnormal migration of anodes
Solution Approach 1:
The patent segments the anode formation process into separate steps for different regions. The first anode is formed on the planarization layer in the normal display region without affecting it. The second anode is formed separately in the under-screen camera region. This segmentation prevents the sputtering process from altering the planarization layer characteristics while still achieving under-screen camera functionality
Solution Approach 2:
The patent performs preliminary actions by forming the first anode and its supporting structures on the planarization layer before forming the second anode in the under-screen camera region. This preliminary formation establishes stable reference structures that are not affected by subsequent sputtering processes, preventing abnormal migration while enabling under-screen camera function
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 solution optimizes the light emission effect of light-emitting structures in the first display region, improving the display effect by preventing abnormal migration of anodes and maintaining the physical and chemical characteristics of the planarization layer.
Implementation Method 1
a region provided with a photosensitive device in a display screen can still be used for display
Implementation Method 2
the sputtering film forming process for forming transparent anodes
Data Source
AI summary
A display panel and a display apparatus. The display panel includes a first display region and a second display region, an array substrate, a plurality of light-emitting structures, a plurality of pixel driver circuits and at least one isolation structure. The first display region is disposed around at least a portion of the second display region, and the second display region corresponds to a photosensitive device configured to collect light through the second display region. The plurality of light-emitting structures are located on the array substrate and disposed in both the first display region and the second display region. The plurality of pixel driver circuits are disposed in the array substrate, and the plurality of pixel driver circuits are disposed in one-to-one correspondence with the plurality of light-emitting structures.