Transparent Display Panel Separating Area for Mura Prevention
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Solution Overview
Problem
The challenge in display technology is to achieve a full-screen display without the 'notch' area, which affects the screen-to-body ratio, by preventing light reflection from the transparent display area into the pixel driving circuits, thereby avoiding display Mura issues and improving display uniformity.
Innovation Solution
A transparent display panel design with a separating area between the transparent display area and the pixel driving circuits, where the pixel driving circuits are positioned outside the transparent display area, and optionally incorporating pseudo transistors or capacitors in the separating area to prevent light reflection and structural mutations during manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If pixel driving circuits are arranged inside the transparent display area, then device complexity is reduced, but light reflection from the transparent display area affects carrier mobility in the pixel driving circuits, causing display Mura
Solution Approach 1:
The display panel is divided into a transparent display area and a non-transparent display area, with pixel driving circuits arranged in the non-transparent area. This spatial segmentation prevents light from the transparent area from affecting the pixel driving circuits, eliminating display Mura while maintaining organizational complexity.
Solution Approach 2:
The pixel driving circuits are extracted from the transparent display area and relocated to the non-transparent display area. This extraction removes the harmful light reflection effect on carrier mobility while preserving the functional integrity of the display system.
2Reliability
If a separating area is arranged between the transparent display area and pixel driving circuits, then display uniformity is improved, but device complexity increases
Solution Approach 1:
The separating area is merged with the non-transparent display area, and both areas share common pixel driving circuits. This integration reduces overall device complexity while maintaining the light-isolation function that ensures display uniformity.
Solution Approach 2:
The non-transparent display area serves multiple functions: it acts as a separating area to isolate light from the transparent display area, and simultaneously houses the pixel driving circuits. This multi-functionality reduces the need for separate dedicated structures, lowering device complexity.
3Reliability
If pixel driving circuits are arranged outside the transparent display area, then light reflection is prevented and display Mura is eliminated, but screen-to-body ratio is reduced
Solution Approach 1:
The display panel employs different transparency qualities in different areas: the transparent display area maintains high transparency for visual display, while the non-transparent display area houses pixel driving circuits. This local differentiation allows circuits to be positioned outside the transparent area for uniformity without significantly reducing the overall screen-to-body ratio.
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 prevents light reflection from affecting carrier mobility and threshold voltage, thus eliminating display Mura and improving display uniformity and processing uniformity, enabling a seamless full-screen display.
Implementation Method 1
prevent that when the first sub-pixels in the transparent display area are emitting light, the light is reflected by a surface of a substrate and enters the at least one pixel driving circuit
Data Source
AI summary
A transparent display panel and a display panel. The transparent display panel includes a transparent display area. The transparent display area includes a plurality of first pixel units. Each of the first pixel units includes a plurality of first sub-pixels. Each of the first sub-pixels includes: a first electrode being light-transmitting; a first light-emitting structural block located on the first electrode; and a second electrode located on the first light-emitting structural block. At least one pixel driving circuit for driving the first sub-pixels to emit light is arranged outside of the transparent display area. A separating area is arranged between an area where the at least one pixel driving circuit is arranged and the transparent display area.