Display Shielding Layer Static Electricity Dissipation
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Solution Overview
Problem
Display panels face interference from static electricity due to the placement of circuit boards on their backside, which affects normal display functionality.
Innovation Solution
A display apparatus with a conductive supporting layer on the backlight side, a circuit board connected to the display panel, and a shielding layer including a conductive layer and insulation layer that directs static electricity away from the circuit board, preventing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the circuit board is provided on the back side of the display panel to reduce frame width, then the frame width is reduced, but the circuit board is easily interfered by static electricity affecting normal display
Solution Approach 1:
A shielding layer is introduced as an intermediary component between the circuit board and the external environment. This shielding layer includes a conductive layer and an insulation layer, where the conductive layer is electrically connected to a grounding electrode on the back side of the display panel. The shielding layer acts as a mediator that redirects static electricity away from the circuit board through the grounding path, thereby protecting the circuit board from static electricity interference while maintaining the reduced frame width design
Solution Approach 2:
The invention converts the harmful static electricity into a beneficial grounding path. By providing a conductive layer electrically connected to the grounding electrode, the static electricity that would otherwise interfere with the circuit board is redirected through the shielding layer to the grounding electrode, where it is safely dissipated. This transforms the harmful static electricity into a controlled electrical path that protects rather than harms the circuit board
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 shields the circuit board from external static electricity, ensuring normal display operation and reducing the risk of display abnormalities.
Implementation Method 1
the shielding layer includes a conductive layer and an insulation layer in sequence away from the display panel; the conductive layer includes a shielding portion and a leading-out portion that are electrically connected to each other; the leading-out portion is electrically connected to the supporting layer
Data Source
AI summary
A display apparatus, including: a display panel; a supporting layer, provided on a backlight side of the display panel; a circuit board, provided on a side of the supporting layer away from the display panel; and a shielding layer, overlaid on a side of the circuit board away from the display panel and including a first insulation layer and a conductive layer. The conductive layer includes a shielding portion and a leading-out portion; the first insulation layer exposes at least partial region of the leading-out portion; an orthographic projection of the shielding portion on the display panel is located within an orthographic projection of the circuit board on the display panel; an orthographic projection of the leading-out portion on the display panel is located outside the orthographic projection of the circuit board on the display panel; the leading-out portion is electrically connected to the supporting layer.