Display Device Front Panel Discharge Resistor
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Solution Overview
Problem
Existing display devices that can switch between a display state and a mirror state are susceptible to electrode charging, which affects the quality of both states.
Innovation Solution
A display device configuration featuring a front panel with a liquid crystal layer sealed between two substrates, including translucent electrodes and a discharge resistor, along with conductive pillars to electrically couple the electrodes, allowing for switching between reflection and transmission states while preventing electrode charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a front panel with liquid crystal layer and translucent electrodes is used to switch between reflection and transmission states, then the ability to display images and provide reflected images is improved, but electrode charging occurs which deteriorates the quality of both states
Solution Approach 1:
The patent extracts the harmful charging effect by introducing a discharge resistor that provides a dedicated discharge path for the translucent electrodes. This separates the display function from the charge accumulation problem, allowing the electrodes to be discharged independently without affecting the image display quality.
Solution Approach 2:
The discharge resistor acts as an intermediary component between the translucent electrodes and the power supply circuit. It mediates the charge discharge process, enabling controlled release of accumulated charge while maintaining the electrical coupling necessary for normal operation through the conductive pillar.
2Adaptability or versatility
If translucent electrodes are used in the front panel for switching states, then the transmission and reflection functionality is improved, but power consumption increases due to charging between electrodes
Solution Approach 1:
The patent extracts the energy loss component by providing a dedicated discharge path through the discharge resistor. This allows accumulated charge and associated energy to be dissipated efficiently, separating the energy management function from the display switching function and reducing overall power consumption.
Solution Approach 2:
The discharge resistor enables the system to discard accumulated electrical charge that would otherwise be lost or cause problems. By providing a controlled discharge path, the system recovers from the charging state efficiently, reducing the energy required for subsequent switching operations.
3Reliability
If a discharge path is provided for the translucent electrodes to prevent charging, then electrode charging is prevented and image quality is maintained, but device complexity increases
Solution Approach 1:
The patent merges the discharge function with the existing electrode structure by integrating the discharge resistor into the second substrate and using the conductive pillar to electrically couple the electrodes. This combines multiple functions (electrode coupling and charge discharge) into a unified structure, minimizing additional complexity.
Solution Approach 2:
The conductive pillar serves multiple functions: it provides electrical coupling between the first and second translucent electrodes for normal operation, and simultaneously serves as a pathway for the discharge resistor to discharge accumulated charge. This multi-functionality reduces the need for separate dedicated discharge components.
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
Enables effective switching between display and mirror states with reduced power consumption in the reflection state, preventing electrode charging and maintaining image quality.
Implementation Method 1
a liquid crystal layer sealed between the first substrate and the second substrate
Implementation Method 2
a first translucent electrode provided on a side of the first substrate on which the liquid crystal layer is located, a second translucent electrode provided on a side of the second substrate on which the liquid crystal layer is located
Implementation Method 3
a discharge resistor that is electrically coupled to the second translucent electrode and is provided on the second substrate
Implementation Method 4
a discharge resistor that is electrically coupled to the second translucent electrode
Data Source
AI summary
A display device includes a display panel, and a front panel overlapping with the display panel and being switched into a reflection state in which incident light is reflected and a transmission state in which incident light is transmitted. The front panel includes a first substrate, a second substrate facing the first substrate, a liquid crystal layer sealed between the first substrate and the second substrate, a first translucent electrode provided on a side of the first substrate on which the liquid crystal layer is located, a second translucent electrode provided on a side of the second substrate on which the liquid crystal layer is located, a discharge resistor that is electrically coupled to the second translucent electrode and is provided on the second substrate, and a first conductive pillar that electrically couples the first translucent electrode and the discharge resistor.