The individual driver boards in direct view LED screens have two major problems.
The front faces of the boards are solid plastic and have a bunch of small louvers separating each row of SMD LEDs. The louvers help improve contrast. The LEDs will have to be spaced pretty closely together to deliver 4K or higher resolution on a normal to large cinema screen. A 50' wide LED screen would need a pixel pitch of only 3.72mm to fit 4096 pixels across. The LEDs take up their own share of space. That leaves a tiny amount left over to make porous for audio to travel through.
Then there is all the other stuff mounted behind the faces of the LED boards. There are IC boards, fans, ribbon cables and other structural stuff. All of that stuff has to be miniaturized somehow in order to not block sound output from speaker drivers.
Even if a LED board maker such as Daktronics, Barco, etc can manage to create a LED display that allows audio to transmit through the screen the economics just aren't there to turn such a thing into a product line. That is if the product is to be sold primarily to cinemas. The ridiculously short theatrical window takes away so much earning power from movie theaters. These companies are already selling direct view LED screens for use in fancy hotel lobbies, trade show displays, corporate presentation rooms and very high end home theaters. They may do the same thing with a newer kind of LED cinema screen.
The front faces of the boards are solid plastic and have a bunch of small louvers separating each row of SMD LEDs. The louvers help improve contrast. The LEDs will have to be spaced pretty closely together to deliver 4K or higher resolution on a normal to large cinema screen. A 50' wide LED screen would need a pixel pitch of only 3.72mm to fit 4096 pixels across. The LEDs take up their own share of space. That leaves a tiny amount left over to make porous for audio to travel through.
Then there is all the other stuff mounted behind the faces of the LED boards. There are IC boards, fans, ribbon cables and other structural stuff. All of that stuff has to be miniaturized somehow in order to not block sound output from speaker drivers.
Even if a LED board maker such as Daktronics, Barco, etc can manage to create a LED display that allows audio to transmit through the screen the economics just aren't there to turn such a thing into a product line. That is if the product is to be sold primarily to cinemas. The ridiculously short theatrical window takes away so much earning power from movie theaters. These companies are already selling direct view LED screens for use in fancy hotel lobbies, trade show displays, corporate presentation rooms and very high end home theaters. They may do the same thing with a newer kind of LED cinema screen.
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