Display Panel Rear Structure With Selective Black-Layer Blocking
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Solution Overview
Problem
Existing display apparatuses face issues with stain defects and misalignment of components due to exposure to external light on the rear surface of the display panel, which can lead to damage and complicate the manufacturing process.
Innovation Solution
A display apparatus design that includes a black layer on the rear surface of the display panel to block external light, along with a first plate and adhesive layers to guide the bending and placement of components, thereby suppressing light exposure and misalignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a separate blocking film is attached on the rear surface of the display panel to block external light, then light exposure is suppressed and stain defects are reduced, but the manufacturing process becomes more complex and production cost increases
Solution Approach 1:
The black layer is integrated directly into the first plate structure, merging the light-blocking function with the existing support plate. This eliminates the need for a separate blocking film and its attachment process, thereby reducing manufacturing complexity while maintaining light exposure protection.
Solution Approach 2:
The first plate is designed to serve multiple functions: structural support, alignment guidance through marks, and light blocking through the integrated black layer. This multi-functionality eliminates the need for separate dedicated blocking films, simplifying the overall device structure and manufacturing process.
2Object-affected harmful factors
If the black layer is disposed in the center area of the first plate, then light exposure is blocked, but alignment marks for bending guidance cannot be exposed
Solution Approach 1:
The black layer is selectively disposed only in specific areas of the first plate where light blocking is needed, while leaving other areas transparent or open to allow alignment marks to be visible. This localized application of the black layer achieves both light protection and alignment guidance without compromising either function.
3Ease of manufacture
If components are disposed on the rear surface without light blocking, then manufacturing is simpler, but misalignment of components occurs due to light exposure
Solution Approach 1:
The first plate with integrated black layer serves as an intermediary structure that provides both mechanical support and light blocking functionality. Alignment marks on the first plate guide component placement, ensuring precision while the black layer protects underlying components from light-induced misalignment, all within a single integrated structure.
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 effectively reduces stain defects and misalignment, simplifies the manufacturing process, and lowers production costs by blocking external light and guiding component placement.
Implementation Method 1
a black layer disposed on a bottom surface of the first plate... the exposure to external light from a rear surface of the display panel is suppressed
Implementation Method 2
a first adhesive layer which bonds the first plate and the printed circuit board
Data Source
AI summary
A display apparatus includes a display panel including a substrate in which a display area in which a plurality of pixels is disposed and a non-display area in an outer periphery of the display area are defined. The display apparatus further includes a first plate disposed below the display panel. The display apparatus further includes a black layer disposed on a bottom surface of the first plate. The display apparatus further includes a printed circuit board disposed below the first plate. The display apparatus further includes a first adhesive layer which bonds the first plate and the printed circuit board. A bottom surface of the first plate includes a center area and an edge area which encloses the center area and includes a first area and a second area and the black layer is disposed in the first area among the first area and the second area.