OLED Display Panel Spacer Columns for Camera Hole Brightness
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Solution Overview
Problem
Current OLED display panels face issues where images in the opening hole area corresponding to a camera cannot display normally, reducing the screen's display effect and hindering the development of full-screen designs due to structural limitations in the opening hole area.
Innovation Solution
A display panel design featuring a light-transmitting sub-area with spacer columns surrounding the opening hole, where the heights of the spacer columns gradually increase from the center to the edges, and a cathode layer covering the spacer columns, enhancing light extraction efficiency by reflecting light back into the sub-area, thereby improving brightness and display effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an opening hole is created in the display panel for camera integration, then camera functionality is achieved, but the opening area cannot display normally and shows black pictures
Solution Approach 1:
The patent introduces a light-transmitting sub-area as an intermediary structure between the opening hole and the display area. This sub-area acts as a mediator that allows light to pass through while maintaining display functionality, solving the contradiction between camera integration and display brightness in the opening area.
Solution Approach 2:
The patent applies different structural characteristics to different regions: the light-transmitting sub-area has specific optical properties allowing light transmission, while surrounding areas have different characteristics. This local differentiation enables the opening area to both transmit light for camera function and maintain display capability.
2Adaptability or versatility
If traditional opening hole structures are used, then camera placement is enabled, but screen integrity is damaged and full-screen design is hindered
Solution Approach 1:
The patent merges the opening hole structure with the display area by introducing a light-transmitting sub-area that integrates both functions. Instead of having separate opening and display areas, the design combines them into a unified structure that maintains screen integrity while enabling camera placement.
Solution Approach 2:
The light-transmitting sub-area serves multiple functions simultaneously: it allows light transmission for camera operation, maintains display functionality to preserve screen integrity, and enables full-screen design. This multi-functionality resolves the contradiction between camera placement and screen composition stability.
3Stability of the object's composition
If the opening hole area is sealed with traditional methods, then structural stability is maintained, but light transmission is blocked and display effect is reduced
Solution Approach 1:
The patent changes the optical parameters of the sealing structure by using a light-transmitting sub-area with specific transparency characteristics. This parameter change allows the sealing structure to maintain structural stability while simultaneously permitting light transmission, thereby preserving display effect in the opening area.
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
The solution allows for normal light transmission and improved display effects in the light-transmitting sub-area, integrating the opening hole area with the rest of the screen, preventing black picture issues and enhancing the screen's overall brightness and appearance.
Implementation Method 1
enhancing light extraction efficiency by reflecting light back into the sub-area, thereby improving brightness and display effect
Data Source
AI summary
The present disclosure provides a display panel and a manufacturing method thereof. The display panel includes a first substrate, a second substrate, a cathode layer, a plurality of spacer columns, and an encapsulation layer. The spacer columns are disposed as at least a one-circle structure surrounding an opening hole on the second substrate, and heights of the spacer columns are gradually increased from a center of the opening hole to edges thereof. The spacer columns having different heights can reflect light again, thereby improving light extraction efficiency, luminous brightness of sub-pixels adjacent to the opening hole area, and display effect.