Liquid Crystal Pixel Relay Structure Using WSi to Limit Heating
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Solution Overview
Problem
In liquid crystal devices, the presence of a lens between the pixel electrode and the transistor complicates electrical connections and leads to increased temperature due to light absorption, as it is challenging to guide all light to a light-transmitting region effectively.
Innovation Solution
Incorporating a first relay layer with WSi between the lens and pixel electrode, and a second relay layer with WSi protrusions between the transistor and lens, to facilitate electrical connections and reduce light absorption by using WSi layers that inhibit light absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a lens is provided between the pixel electrode and the transistor to guide light to a light-transmitting region, then light guidance is improved, but electrical connection becomes difficult due to the lens thickness
Solution Approach 1:
A relay electrode is introduced as an intermediary component between the pixel electrode and the transistor. This relay electrode serves as a mediator that receives light from the pixel electrode through the lens and transmits it to the transistor, while also providing a pathway for electrical connection. The relay electrode structure with its light-transmitting region and electrically connected region resolves the conflict between optical guidance and electrical connection requirements.
2Reliability
If a relay electrode is provided to electrically connect the pixel electrode to the transistor, then electrical connection is achieved, but light guidance becomes incomplete and temperature increases
Solution Approach 1:
The relay electrode is designed with spatially varying properties: a light-transmitting region with specific optical characteristics for guiding light, and an electrically connected region with conductive properties for electrical connection. This local differentiation of quality within the same component allows it to simultaneously fulfill optical and electrical functions while minimizing light absorption and temperature rise.
3Volume of moving object
If the distance between the lens and relay electrode is shortened to achieve compact design, then device size is reduced, but light guidance efficiency decreases
Solution Approach 1:
The relay electrode is designed with a three-dimensional structure that includes both a light-transmitting region and an electrically connected region at different spatial positions. This dimensional arrangement allows the component to maintain effective light guidance paths while providing electrical connection, resolving the conflict between compact size and light guidance efficiency.
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 configuration effectively reduces temperature rises in the liquid crystal device, inhibits light absorption, and extends the product life by minimizing heat generation and light-induced deterioration.
Implementation Method 1
a first relay layer that is provided in a layer between the lens layer and the pixel electrode and electrically connected to the pixel electrode, wherein the first relay layer includes WSi
Data Source
AI summary
Provided is an electro-optical device including a transistor, a pixel electrode provided on a light incidence side of the transistor, a lens layer provided in a layer between the transistor and the pixel electrode, and a relay layer serving as a first relay layer that is provided in a layer between the lens layer and the pixel electrode and electrically connected to the pixel electrode, wherein the relay layer includes WSi on the pixel electrode side.