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Category:

electronics

Displays require ideas and knowledge electronics

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Displays require ideas and knowledge
electronics
displays
materials
optics

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… By size
Display built into the contact lens
Aerial view of landscape display

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the observation distance D = 3500 * A, where A is the linear pixel size.

Liquid crystal display devices
liquid crystal display (LCD) is a thin, flat electronic
visual display that uses the light modulating properties
of liquid crystals (LCs).
Display – Conductor of Information Magistral

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Ways of passing light through liquid crystal displays

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Transmissive mode

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Reflective mode

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Transflective mode

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Main properties of light: polarization

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Crystal property: birefringence

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Liquid crystals
nm
nm

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Fredericks effect in an electric field
E
F
F

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LC oriented without applying an electric field
The parallel alignment of liquid crystal molecules along grooves

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The basic structure of the liquid crystal cell

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Creating an LCD

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TFT LCD Configuration

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TFT LCD technology process

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TFT Manufacturing Process

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Color Filter Manufacturing Process

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Cell Manufacturing Process

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Targets applied in TFT-LCD manufacturing

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Technology of Fabrication

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Organic Light Emitting Diodes
(OLEDs)

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LCD VS EMISSIVE DISPLAYS
LCD
Emissive Displays

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OLED Device Operation

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OLED Diagram

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OLED and Color

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Types 0f OLED

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PMOLED and AMOLED

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Transparent and Top Emitting OLED

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Flexible and White OLED

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OLED Technology
Evaporation and Shadow Masking

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OLED Technology
Inkjet Printing and organic vapor phase deposition

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OLED Application

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MicroLED
Displays

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What is a MicroLED

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What is a MicroLED Display?
• Also known as micro-LED,
mLED or µLED.
• MicroLED displays comprise
several microscopic LEDs,
which self-illuminate per
display pixel - just like an OLED
(Organic Light Emitting Diode)
panel would, only MicroLED
uses inorganic material.
• MicroLED features miniature
length less than 100 µm. Via
mass transfer technology µm–
level trio-color RGB MicroLEDs
are moved onto substrate ,
creating MicroLED display in
various size.

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Timeline

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Production methods for micro-LEDs

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Major manufacturing technology bricks

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MicroLED and addressing structure

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MicroLed Display Manufacturing Challenges
Light
extraction and
beam shaping
Color
Conversion
Massively Parallel
and High Accuracy
Pick and Place
Technology
LED Technology
(epitaxy, chips)
Source: MicroLED Displays 2017 report Yole Développement
Backplane
Hybridization
Defect
Management
and Testing
MicroLED
Displays
Supply Chain