Display Apparatus Edge-to-Edge Splicing via Circuit Extraction
Solution Overview
Problem
Large display boards with spliced display panels often experience image discontinuities due to non-display regions around the splicing areas, which can be exacerbated by the reserved spaces in light emitting diode panels, posing a challenge in maintaining display quality and reducing production yield.
Innovation Solution
The display apparatus incorporates a design with light emitting display units having driving circuit layers that are electrically bonded to circuit boards, allowing for reduced bonding regions and seamless splicing, with specific spacing and pitch arrangements to minimize visual discontinuities and facilitate easier repair.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If multiple display panels are spliced to form large display boards, then large-scale display capability is improved, but image discontinuity occurs at splicing regions due to non-display regions
Solution Approach 1:
The patent extracts the driving circuit layer from the traditional panel structure and places it on a separate circuit board. This separation removes the non-display region constraint from the display panel itself, allowing the display region to extend to the physical edge of the panel without being interrupted by circuit board boundaries or sealing structures.
Solution Approach 2:
The patent transitions from a planar integration of circuits and displays to a three-dimensional arrangement where the driving circuit layer is positioned on a separate substrate (circuit board) adjacent to the display panel. This dimensional reorganization allows the display region to overlap with the circuit board area, eliminating splicing gaps.
2Area of moving object
If light emitting diode panels are used to reduce frame width, then display area is improved, but reserved spaces still form image discontinuity
Solution Approach 1:
The patent extracts the driving circuit functionality from the panel's frame region and relocates it to a separate circuit board. This extraction eliminates the need for reserved spaces within the panel structure, as all circuit elements are positioned externally on the circuit board, allowing LED panels to achieve true edge-to-edge display coverage.
3Reliability
If non-display regions are provided around display regions, then panel sealing and circuit integration are improved, but splicing discontinuity worsens
Solution Approach 1:
The patent segments the display system into functionally independent components: the display panel containing only the display region, and a separate circuit board containing the driving circuit layer. This segmentation allows each component to be optimized independently—the display panel achieves maximum display area with no non-display regions, while the circuit board handles all circuit functions, eliminating splicing discontinuity.
Data Source
AI summary
A display apparatus includes a first circuit board and a plurality of first light emitting display units. The first circuit board has a first surface and a first board edge connected to the first surface. The first light emitting display units are disposed on the first surface. Each of the first light emitting display units has a plurality of first pixel areas and includes a first driving circuit layer electrically bonded to the first circuit board and a plurality of first light emitting devices. The first light emitting devices are disposed on one side of the first driving circuit layer away from the first circuit board and are electrically bonded to the first driving circuit layer. At least one of the first light emitting display units has a first side edge parallel to the first board edge. The first board edge is drawn back from the first side edge.