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Research draft

display device

vr.tr.display-device · PHY.OBJ

Let an agent explain display devices, relay technologies, specifications and accessibility features from engineering and standards sources, describe the named display types, note photosensitivity and ergonomic considerations, and distinguish display devices from monitors as products, projectors, touch input and graphics cards.

Thing Registry Physical world and living systems

Research draft, second pass

A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.

written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify

Researched by: Claude

Purpose and description

Let an agent explain display devices, relay technologies, specifications and accessibility features from engineering and standards sources, describe the named display types, note photosensitivity and ergonomic considerations, and distinguish display devices from monitors as products, projectors, touch input and graphics cards.

An output device that presents information in visual or tactile form, including electronic screens such as flat-panel displays and LED-backlit LCD displays, OLED and e-paper displays, signage such as variable-message signs on roads, simple indicator lights and display keys with built-in screens, and refreshable braille displays that raise pins to form braille characters for blind and low-vision users; displays differ in resolution, brightness, refresh rate and accessibility.

What it is for: Presenting information visually or by touch.

It can be explain technologies; relay specifications; describe named display types; relay accessibility and ergonomics.

Distinguishing features

Output device

Many technologies

Visual or tactile

Accessibility relevance

What it looks like

Screens, lights, signs or tactile pin arrays.

Physical character

common technologies: LCD, OLED, microLED, e-paper list

braille display cell: 6 or 8 pins note

photosensitivity guidance: WCAG three flashes threshold note

How it is recognised

Device presenting information visually or tactilely

Variable-message sign, display key, indicator light, LED-backlit LCD, refreshable braille display, flat-panel display

Monitors are products containing displays; projectors cast images; touch sensors are input; graphics cards generate signals

Related models

is a kind of - in registry terms

output device

includes -

liquid-crystal display

includes -

refreshable braille display

is contrasted with -

video projector

In practice

Families and kinds

flat-panel displays

LCD, OLED and microLED screens

e-paper displays

signage and variable-message signs

indicator lights and segment displays

tactile braille displays

Standards and regulation

VESA display standards

WCAG guidance on flashing content

Energy labelling for displays

E-waste rules

Failure modes and hazards

Flashing content triggering photosensitive seizures

Eye strain and ergonomic issues

E-waste and hazardous materials

Also called

variable-message signdisplay keyindicator lightLED-backlit LCD displayrefreshable braille displayflat-panel displaysystem consolelight barTactileBraille e-bookcolor flatpanel displayliquid crystal on siliconfield emission displaytransparent displaydigital displayQQ爱墙projection screentraffic information displayStereo displayhead-mounted displaytop screenbottom screensplit-flap displayMultiplexed displaytote boardradio magnetic indicatorrollsignSchauzeichenNixie tuberadar displayHolographic screenplotting boardsegment display2-dimensional display3-dimensional displayscoreboardsee-through displayvolumetric displaytelescopic pixel displayteleprompter

+15

Where this came from

wikidata · CC0 1.0

Source repository Registry entry point

Drafted structure

Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.

Understand What a display device is.

Definition.

Definition

Definition.

Definition

Definition.

  1. What is a display device, and how does it differ from monitors, projectors, touch input and graphics cards? definition
  2. Is the question about buying, technology, accessibility or road signage? boundary

Types

Named types.

Types

Types.

  1. What are variable-message signs, display keys, indicator lights, LED-backlit LCDs, braille displays and flat panels? definition
  2. Which entry fits the specific type? action
Technology Technology.

Sources.

Panels

Panel technologies.

Panels

Panels.

  1. How do LCD, OLED, microLED and e-paper work? provenance
  2. Which references are standard? provenance

Specifications

Specifications.

Specifications

Specifications.

  1. What do resolution, refresh rate, brightness and colour gamut mean? measurement
  2. Which sources are cited? provenance
Access Accessibility and health.

Regulation.

Braille

Braille displays.

Braille

Braille.

  1. How do refreshable braille displays work with screen readers? provenance
  2. Which entry fits screen reader? action

Health

Health.

Health

Health.

  1. What guidance exists on flashing content and screen ergonomics? provenance
  2. Which entry fits photosensitive epilepsy? action
Context History and environment.

Context.

History

History.

History

History.

  1. How did displays evolve from CRTs to flat panels? provenance
  2. Which entry fits cathode-ray tube? action

E-waste

E-waste.

E-waste

E-waste.

  1. How should old displays be recycled? provenance
  2. Which entry fits electronic waste? action

What the second pass must settle

  • Should signage and indicator lights be separate entries?
  • How should standards bodies be linked?
  • How should emerging display technologies be recorded?
Draft as JSON