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4K content to 4K screens

The 4K ecosystem can be summarized as Capture – Play – Connect – Display, and all four pieces have to be there to create a useful solution. Working back from the display itself, driving a 4k screen with 4k content is a matter of connectivity and source.

Connecting a 4K (3840 x 2160) resolution source to a 4K display typically involves some combination of HDMI and DisplayPort connections. In both cases, the version of the standard implemented is a critical factor in the display’s ability to receive a 4K signal over a single connection. The table below summarizes the capacity, in terms of resolution, refresh rate and color depth, that the various HDMI and DisplayPort standards can support. As an alternative to single link 4k connections, some displays are able to receive a synchronized group of 2 or 4 connections in order to process and display a 4K source.

Standard Number of Cables Resolution Refresh Rate Bits per Color Comments
HDMI 1.1, 1.3   1 1920x1080 60Hz 8 Bit  
HDMi 1.4a, b 1 3840x2160 30Hz 8 Bit Not all 4K displays have this
HDMi 2.0 1
3840x2160*
60Hz* 10 Bit* * TBD (Standards not released yet)
DisplayPort 1.1a 1 3840x2160 30Hz 10 Bit Receiver chips (display side) not generally available.
DisplayPort 1.2 1 3840x2160 60Hz 10 Bit

Synchronized 4x 1920x1080 Few displays support this.

HDMI 1.1-1.4a,b 4 3840x2160 60Hz 10 Bit

Synchronized 2x1920x2160 Few displays support this

HDMI 1.1 – 1.4a,b 2 3840x2160 60Hz 8 Bit

Synchronized 2x 1920x2160 Few displays support this

DisplayPort 1.1a 4 3840x2160 60Hz 10 Bit

Synchronized 4x1920x2160 Few displays support this

DisplayPort 1.1a 2 3840x2160 60Hz 8 Bit

Synchronized 2x1920x2160 Few displays support this

While it would be ideal to be able to take a full 60Hz 4K signal with 10 bit color over a single connection, the implementations are really not there yet today, and practically speaking, slower refresh rates and multi-connection configurations that are available, generate excellent 4k results with most content. 

The most common size you see today in this growing 4k category is 84” diagonal. To see Planar’s offering in the 4K world, check out out  Planar® UltraRes Series.

 

4K , Planar UltraRes