Display Device Conductive Member Static Discharge
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Solution Overview
Problem
In liquid crystal displays, built-up electric charges on the opposite substrate during manufacturing can lead to reliability issues due to the difficulty in discharging these charges, which can cause static electricity and potentially damage the components.
Innovation Solution
A display device structure that includes a conductive member connecting the light blocking layer on the opposite substrate to a ground terminal on a printed circuit board, allowing electric charges to be discharged safely, thereby preventing damage from static electricity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conductive layer is disposed on the opposite substrate, then the opposite substrate can be manufactured, but electric charges build up and cannot be discharged, deteriorating reliability
Solution Approach 1:
A conductive member is introduced as an intermediary element to bridge the light blocking layer and the ground terminal. This conductive member provides a dedicated charge discharge path without interfering with the manufacturing process of the opposite substrate, thus resolving the contradiction between manufacturability and reliability against static electricity
Solution Approach 2:
The charge discharge function is segmented from the main substrate structure by introducing a separate conductive member. This segmentation allows the opposite substrate to maintain its manufacturing simplicity while the conductive member specifically handles the charge discharge function, resolving the contradiction between ease of manufacture and reliability
2Device complexity
If electric charges are not discharged, then the structure remains simple, but static electricity damages components, reducing reliability
Solution Approach 1:
The conductive member serves as a minimal intermediary addition that provides charge discharge capability without significantly increasing device complexity. It connects the light blocking layer to the ground terminal through a simple conductive path, maintaining structural simplicity while improving reliability
Solution Approach 2:
The conductive member enables the light blocking layer to self-discharge accumulated electric charges automatically. This self-service mechanism prevents static electricity buildup without requiring external intervention or complex active discharge circuits, thus maintaining low device complexity while enhancing reliability
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
This solution effectively discharges electric charges to the ground, enhancing the reliability of the display device by preventing damage from static electricity and ensuring the stability of the components.
Implementation Method 1
The conductive member electrically connects the light blocking layer to the ground terminal
Data Source
AI summary
A display device includes an array substrate, an opposite substrate, a printed circuit board, and a conductive member. The array substrate includes pixel electrodes. The opposite substrate faces the array substrate, is coupled with array substrate, and includes a light blocking layer disposed in a non-pixel area of the array substrate. The printed circuit board includes a ground terminal and output terminals to apply a driving signal to the array substrate through the output terminals. The conductive member electrically connects the light blocking layer to the ground terminal.