Pixel pitch

Pixel pitch (also called dot pitch) is the distance between the centres of neighbouring pixels on a display. The monitor maker EIZO defines it as "the distance from the center of one pixel to the center of the next closest pixel of the same color", and notes that a smaller pixel pitch generally means a sharper image. Desktop monitor specifications give pitch in millimetres, while the microdisplays used in head-mounted displays and AR glasses quote it in micrometres (µm).

Pitch is the inverse of pixel density: because an inch is 25.4 mm, a 1 µm pitch corresponds to 25,400 pixels per inch (PPI), and Jade Bird Display (JBD) gives its 2.5 µm microLED panels a density of 10,160 PPI. In a VR or AR headset the panel is viewed through magnifying optics, so pitch on its own does not give perceived sharpness; that depends on how the optics spread the pixels across the field of view, usually expressed in pixels per degree (PPD). Pitch does set how many pixels fit on a panel of a given size. Panels adapted for VR headsets have had pitches of tens of micrometres, while micro-OLED and microLED microdisplays for compact headsets and AR glasses have pitches of a few micrometres.

Reviewed 15 October 2026. Checked every definition, quotation, spec, price, date and calculated pitch against the EIZO and Lenovo glossaries, Sony, Apple, Meta, JBD and ROE Visual sources, Guttag 2017, bit-tech 2006, Road to VR 2018 and the full texts of the six cited papers. About review dates.

Definition and measurement

EIZO's definition measures between pixels of the same colour, not between adjacent subpixels of different colours. Lenovo's glossary uses the name "dot pitch" for the same quantity, describing it as "the distance between the centers of two adjacent pixels of the same color" and noting that it is listed in millimetres in monitor specifications. In their 2024 study of virtual production, Jon Swords and Nina Willment describe the pixel pitch of an LED wall as "the distance between the individual LED lights on the screen".

Pitch multiplied by pixel count gives the size of the active area. ROE Visual's Black Pearl BP2V2 LED panel, for example, has a 2.84 mm pitch and a resolution of 176 x 176 pixels on a 500 mm x 500 mm panel. The same arithmetic works in reverse for microdisplays: when JBD cut the pitch of its microLED panels from 4 µm in the Hummingbird series to 2.5 µm in the Roadrunner series, its Roadrunner I projector kept the 640 x 480 resolution of Hummingbird I while, according to JBD, cutting volume and weight by about 50 percent.

Pitch is not the same as fill factor. Road to VR describes a display's fill factor as how much of its area "actually lights up vs. how much is unlit"; the unlit gaps between pixels are what produce the screen door effect.

Dot pitch in CRT monitors

On colour cathode-ray tube (CRT) monitors, which form the image from phosphors of different colours, the equivalent measure was called dot pitch. Writing for bit-tech in 2006, Wil Harris explained that on most monitors dot pitch was measured diagonally between two phosphors of the same colour, but that some manufacturers quoted the horizontal distance instead, "which can make them appear better specified, on paper, than perhaps they are"; taking the diagonal pitch as 1, the horizontal pitch works out to 0.87. Shadow-mask tubes used a metal sheet with holes; aperture-grille tubes such as Sony's Trinitron and Mitsubishi's Diamondtron used a mesh of wires that formed vertical slots instead. Harris gave the example of a 21-inch monitor with a viewable area of 401 mm x 298 mm and a dot pitch of 0.26 mm, and noted that dot pitch combined with the viewable area defines the maximum resolution of the screen.

Pixel pitch, pixel density and pixels per degree

Pixel density and pitch describe the panel; PPD describes the image as the eye receives it. In the basic near-eye display, the eyepiece is an optical magnifier that projects a magnified virtual image of the panel. Junoh Lee and Sun-Je Kim note in a 2025 review that a wider field of view can be obtained with an eyepiece of greater optical power, but "for a given panel resolution and pixel pitch, this expansion reduces the angular resolution, making individual pixels more apparent". They also tie the eye box to pitch, writing that "finer pixel pitches allow smaller exit pupils and therefore tighter alignment requirements".

Karl Guttag gave a worked example in 2017. A typical headset of the time used a lens of roughly 40 mm focal length, which gave an angular magnification of about 6x relative to viewing at 25 cm. A pixel of the size used in the Oculus Rift CV1 and HTC Vive would subtend about 0.77 arcminutes at 25 cm but about 4.7 arcminutes through the headset lens. Guttag noted that 1 arcminute per pixel is considered near the limit of human vision, and that devices with good resolution try to stay under 2 arcminutes per pixel and preferably under 1.5.

Meta's own specifications show the difference between the two measures. Meta lists the Meta Quest 3 at 2064 x 2208 pixels per eye at 1218 PPI and 25 PPD, and the Meta Quest 3S at 1832 x 1920 pixels per eye at 773 PPI and 20 PPD. By the 25.4 mm-per-inch conversion, those densities correspond to pitches of about 20.9 µm and 32.9 µm. The ratio of the two PPD figures is smaller than the ratio of the PPI figures; the headsets also use different lenses, pancake on Quest 3 and Fresnel on Quest 3S.

Pixel pitch in VR and AR displays

Direct-view panels in VR headsets

Guttag put the pitch of the direct-view OLED and LCD panels adapted for VR headsets at 40 µm to 60 µm in 2017, roughly an order of magnitude larger than microdisplay pixels and two orders of magnitude larger in area. A large panel can carry many pixels even at that pitch. Xiong and colleagues calculated in 2021 that 60 PPD across a 100 degree field of view requires 6K resolution per eye, and wrote that this "may be realizable in VR headsets because a large display panel, say 2-3 inches, can still accommodate a high resolution with acceptable manufacture cost". They also observed that the resolution density of VR headsets was still limited, and that Fresnel lenses would eventually not be an ideal solution once high-PPI displays became available.

Microdisplays

Kang et al. note that OLED microdisplays with a diagonal of 2 inches or less are used in AR and VR devices, and that because their pixels are magnified by the optics, they must have a high pixel density. Xiong et al. state that for a glasses-like wearable AR display, the conflict between small display size and high resolution "becomes obvious as further shrinking the pixel size of a microdisplay is challenging", and present foveated display designs as one way around it. In 2017 Guttag listed microdisplay pixels ranging from about 4.27 µm to about 9.6 µm in pitch, including a 4.27 µm field-sequential LCoS pixel from Syndiant, a 5.4 µm DLP pico pixel and a 9.3 µm eMagin OLED microdisplay pixel.

Micro-OLED. Most OLED microdisplays use silicon backplanes with CMOS circuits. In a 2022 feature, engineers at Sony Semiconductor Solutions described reducing their existing 7.8 µm pixel to 6.3 µm, and said that "when the pixel pitch is reduced to achieve higher definition, the viewing angle properties are considerably compromised"; to compensate they placed the colour filter closer to the OLED layer and designed a new pixel layout. In August 2023 Sony announced the ECX344A, a 1.3-type (33.0 mm diagonal) OLED microdisplay for VR and AR head-mounted displays with 3,552 x 3,840 pixels at a 6.3 µm pitch and frame rates up to 90 fps, priced at 150,000 yen (excluding tax) with availability planned for winter 2023 in Japan. Apple's specifications for the Apple Vision Pro list micro-OLED displays with 23 million pixels and a "7.5-micron pixel pitch".

Very fine pitch creates its own problems. A 2023 study by Kang and colleagues in Scientific Reports notes that the distance between subpixels in an OLED microdisplay is approximately hundreds of nanometres, compared with tens of micrometres in conventional OLED displays, so that current driven into one subpixel can leak sideways into its neighbours. Their simulations of a white OLED with red, green and blue colour filters found that the colour gamut fell as pixel density rose from 200 to 5,000 PPI.

MicroLED. Xiong et al. describe how microLED microdisplays are bonded to a silicon driver: with conventional flip-chip bonding, thermal mismatch makes misalignment between the LED chips and the metal bonding balls on the silicon substrate serious as pixels shrink, while bonding the LED epitaxial layer to the driver first and defining the LED mesas afterwards removes the alignment step and allows pixel sizes below 5 µm. A 2025 review in Light: Science & Applications cites JBD's wafer-bonded monochrome active-matrix microLED displays with a 4 µm pitch and 6,350 ppi for AR, and its later 2.5 µm monochrome panels; the same review notes that commercial microLED televisions, by contrast, have millimetre-scale pitch. JBD announced its Roadrunner I polychrome projector, based on the 2.5 µm panel, on 22 December 2025 and said it was available for customer sampling; the company claims up to 32 PPD over a 25 degree field of view. On 17 June 2026 it announced Roadrunner II, which uses a 0.1-inch panel with the same 2.5 µm pitch and 10,160 PPI at 800 x 600 resolution, for a claimed 33.3 PPD at a 30 degree field of view.

LCoS. In reflective liquid-crystal-on-silicon panels, Yin et al. write that the fringing field caused by unequal voltages on adjacent pixels becomes much stronger once the pixel pitch is comparable to or smaller than the liquid crystal cell gap, and give the state-of-the-art pitch as about 3 µm for both amplitude and phase LCoS devices as of 2022.

Holographic displays

In a holographic near-eye display the pitch of the spatial light modulator (SLM) limits the field of view, because the SLM forms the image by diffraction. Yin et al. explain that in an unmagnified system the field of view equals twice the maximum diffraction angle, which for a binary grating at normal incidence is sin^-1[λ/(2p)], where p is the pixel pitch and λ the wavelength. At 633 nm, reducing the pitch to 1 µm widens the field of view to about 37 degrees. Field of view and eye box then trade against each other for a fixed number of pixels, and the authors conclude that an "ultrahigh resolution of 25,400 PPI corresponding to a pixel pitch of 1 µm is critically needed" for AR and VR. See Computer-generated holography for more on holographic displays.

LED walls in virtual production

Pitch is also a key specification of the LED panels used to build volumes for virtual production. Swords and Willment report that if the pixel pitch is not dense enough, the image "may look low resolution or moiré patterns may become visible". ROE Visual says its Black Pearl BP2 panel was "specially developed for use in the film industry and xR applications" and that it featured in productions including The Mandalorian and Westworld; the updated BP2V2 version has a 2.84 mm pitch.

Examples

Figures as published by the maker or the cited source. Pitches derived from a published PPI are marked as calculated.

Display or device	Technology	Pixel pitch	Notes
ROE Visual Black Pearl BP2V2	LED video wall panel	2.84 mm	176 x 176 pixels per 500 mm panel
21-inch CRT monitor (bit-tech example)	Colour CRT	0.26 mm (dot pitch)	401 mm x 298 mm viewable area
Direct-view panels adapted for VR (2017)	LCD and OLED	40-60 µm	Range given by Guttag
Meta Quest 3S	Headset display panel	about 32.9 µm (calculated)	773 PPI, 20 PPD
Meta Quest 3	Headset display panel	about 20.9 µm (calculated)	1218 PPI, 25 PPD
eMagin OLED microdisplay (2017)	Micro-OLED	9.3 µm
Apple Vision Pro	Micro-OLED	7.5 µm	23 million pixels
Sony ECX344A (2023)	Micro-OLED	6.3 µm	3,552 x 3,840 pixels, 1.3-type
DLP pico pixel (2017)	DLP	5.4 µm
Syndiant LCoS (2017)	Field-sequential LCoS	4.27 µm
JBD Hummingbird series	MicroLED	4 µm	640 x 480 (Hummingbird I)
State of the art LCoS (2022)	Amplitude and phase LCoS	about 3 µm
JBD Roadrunner series	MicroLED	2.5 µm	10,160 PPI

See also

• Resolution
• Visual acuity