Liquid Crystal Display Static Charge Dissipation via Protective Plate Electrode
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Solution Overview
Problem
Existing liquid-crystal display panels in in-plane switching or fringe-field switching modes face issues with dissipating static electricity and reliability due to the lack of effective charge dissipation and design constraints in forming conducting connections.
Innovation Solution
A liquid-crystal display panel with a protective plate featuring a transparent electrode layer on the display surface and a conductive electrode layer on the rear surface of the protective plate, connected by conductive substances to dissipate static electricity and allow for a larger contact area for the conducting connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a transparent conductive film is formed on the transparent cover glass to dissipate electric charges externally electrified, then the ability to dissipate external electric charges is improved, but the structure requires allocation of area for forming metal line on TFT substrate with design constraints and has reliability issues in connection
Solution Approach 1:
The patent moves the electrode layer from the TFT substrate plane to the protective plate, which is a different spatial dimension. This allows the conducting connection to be formed in the protective plate's thickness direction rather than consuming area on the constrained TFT substrate, thereby resolving the space allocation problem while maintaining charge dissipation functionality
Solution Approach 2:
The patent separates the electrode function from the TFT substrate by placing a dedicated electrode layer on the protective plate. This segmentation allows the conducting connection to be independently designed and formed without interfering with the TFT substrate's metal line layout, improving both reliability and design flexibility
2Reliability
If the transparent electrode layer is formed on the counter substrate to dissipate static electricity, then static electricity dissipation is improved, but the contact area for conducting connection is limited due to design constraints
Solution Approach 1:
The patent utilizes the protective plate's thickness direction to form the electrode layer, transforming the problem from a two-dimensional area constraint on the counter substrate to a three-dimensional solution space. This allows for larger contact areas without compromising the display area or other design constraints
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 dissipates static electricity and improves the reliability of the conducting connection, reducing design constraints and enhancing the display's ability to handle external electric charges without affecting the liquid-crystal panel's performance.
Implementation Method 1
a conductive substance that connects the transparent electrode layer formed on the liquid-crystal display panel to the electrode layer disposed on the rear surface of the protective plate
Data Source
AI summary
Provided is a display that causes an electric field generated in a transverse or diagonal direction to drive liquid crystals and enables allocation of a contact area for a conducting connection. A transparent electrode layer is formed on a surface of a counter substrate that is opposite to a surface of the counter substrate on which the liquid crystals are disposed. The counter substrate is included in a liquid-crystal display panel. An electrode layer is formed on the rear surface of a protective plate disposed to face the counter electrode. Conductive substances are disposed between the transparent electrode layer and the electrode layer to connect the transparent electrode layer to the electrode layer. A GND connecting part provided in a surrounding area of the protective plate connects the electrode layer formed on the protective plate to, for example, a casing, thus connecting the electrode layer to the GND.