Display Panel Planarization for Curved Transmission Areas
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Solution Overview
Problem
Existing display devices face challenges in integrating additional functions and expanding display areas while maintaining a thin and lightweight design, particularly in creating a transmission area surrounded by the display area.
Innovation Solution
A manufacturing apparatus and method that includes a stage with a display substrate, a jig, a heat transfer unit with protrusion pins, and a laser unit to form a planarized organic layer on a display panel, allowing for the formation of a bending or curved non-display area to accommodate a transmission area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a transmission area is provided in the display panel to enable additional functions, then the functionality and design flexibility are enhanced, but the structural complexity and manufacturing difficulty increase due to the bending or curved shape of the non-display area
Solution Approach 1:
The display panel is divided into distinct regions: a display area, a non-display area, and a transmission area. The non-display area is further segmented into a first non-display area and a second non-display area with different stack structures. This segmentation allows each region to be optimized independently, enabling the transmission area functionality while managing structural complexity through modular design.
Solution Approach 2:
Different stack structures are applied to different regions of the non-display area. The first non-display area has a first stack structure while the second non-display area has a second stack structure. This local differentiation allows the panel to achieve the desired bending or curved shape in specific areas without compromising the overall structural integrity, thereby enabling transmission area functionality while controlling manufacturing complexity.
2Area of stationary object
If the display area is expanded to provide more display space, then the display capability is improved, but the manufacturing precision requirements increase due to the need for planarization of the organic layer
Solution Approach 1:
An organic layer is formed in advance to cover and planarize the stack structure of the non-display area before the display area is fully assembled. This preliminary planarization action ensures that the subsequent display area can be manufactured with standard precision requirements, as the underlying surface is already flattened by the organic layer. This allows expanded display area without proportionally increasing manufacturing precision demands.
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
Enables the creation of display devices with integrated transmission areas, enhancing functionality and design flexibility without compromising thickness or weight.
Implementation Method 1
a laser unit configured to irradiate a laser beam to the heat transfer unit
Implementation Method 2
a heat transfer unit arranged on the jig and including a protrusion pin protruding toward the second surface
Implementation Method 3
an ultraviolet irradiator configured to irradiate an ultraviolet ray toward the organic material discharged
Data Source
AI summary
An apparatus for manufacturing a display apparatus is provided. The apparatus includes a stage that has a first surface and a second surface. A display substrate is arranged on the first surface, and the second surface is opposite to the first surface. The apparatus also includes a jig facing the second surface, a heat transfer unit arranged on the jig and including a protrusion pin protruding toward the second surface, and a laser unit configured to irradiate a laser beam to the heat transfer unit.