IR sensor embedded in direct LED backlight and LCD panels and assemblies for receiving IR command codes from a remote

Patent metadata

Field	Value
Publication number	US-9719851-B2
Application number	US-201514590446-A
Country	US
Kind code	B2
Filing date	Jan 6, 2015
Priority date	Jan 6, 2015
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

An infra-red assembly for a television, that has a plurality of layers operating for creating an image from pixels formed of illuminated color filters. The plurality of layers including a backlight, a polarization layer adjacent the backlight, a TFT layer over the polarization layer, an LCD layer overlying the TFT layer, and a color filter layer overlying the LCD layer. Wherein at least one of the layers includes an opening, and another of said layers includes an infrared filter that passes infrared and blocks light that is not infra red, and where another of said layers underlying said infrared layer includes an infrared receiver that receives the infrared through said opening and said infrared filter, and where said opening and said filter and said receiver are located in registration with one another, such that infrared passes through the opening and passes through the filter and passes to the receiver.

First claim

What is claimed is:

1. An assembly for a television, comprising:
a plurality of layers which are energized for creating an image from pixels formed in said layers,
said plurality of layers including:
a backlight layer,
a switching layer, overlying said backlight layer, said switching layer having individual elements arranged in a matrix, said individual elements that form said pixels and where said individual elements are modulated to create the image;
a color filter layer overlying the switching layer, said color filter layer including individual color filter elements arranged in a matrix;
and at least one polarization layer overlying the color filter layer,
at least a first infrared receiver located on one of said layers which underlies said color filter layer, said first infrared receiver being located in a location that is between said individual elements formed in a matrix,
at least a second infrared receiver located on said one of said layers which underlies said color filter layer, said second infrared receiver being in an area that is between said individual elements formed in a matrix, and in a different location than said first infrared receiver,
a first opening in said color filter layer, in registration with said first infrared receiver, and in registration with the area between individual elements of said color filter layer, located so that IR received in said first opening passes to said first infrared receiver,
said first opening having an infrared filter that only passes infrared,
a second opening in said color filter layer, in registration with said second infrared receiver, and in registration with the area between individual elements of said color filter layer, located so that IR received in said second opening passes to said second infrared receiver,
said second opening having an infrared filter that only passes infrared, and
a third opening in said at least one polarization layer, in registration with said first infrared receiver, located in a location such that infrared passing through said third opening is passed to said first opening, and to said first infrared receiver; and
a fourth opening, in said at least one polarization layer, in registration with said second infrared receiver, located in a location such that infrared passing through said fourth opening is passed to said second opening, and to said second infrared receiver.

2. The assembly as in claim 1 , wherein there are openings in all of the switching layer, the color filter layer, and the polarization layer, and said infrared receiver is located in the backlight layer.

3. The assembly as in claim 1 , wherein said switching layer comprises a thin-film transistor layer with individual thin film transistors, and a liquid crystal layer with individual liquid crystals, and said infrared receiver is located in a location in between said individual elements.

4. The assembly as in claim 2 , wherein the back light is a direct LED backlight layer.

5. The assembly as in claim 4 , further comprising a hole in the back light layer through which a cable is run.

6. The assembly as in claim 1 , wherein said infrared filter is located on the color filter layer.

7. The assembly as in claim 1 , wherein the infrared receivers are located in between four different individual elements.

8. The assembly as in claim 1 , wherein there are multiple polarization layers, and the openings are located in each of the polarization layers.

9. The assembly as in claim 1 , wherein there is an outer edge of the area that has no pixels thereon, and wherein said openings, said filter, and said receiver are located in said outer edge.

10. An infra-red assembly for a television, comprising:
a plurality of layers operating for creating an image from pixels formed of illuminated color filters,
said plurality of layers including a backlight, a polarization layer adjacent the backlight, a TFT layer over the polarization layer, an LCD layer overlying the TFT layer, and a color filter layer overlying the LCD layer, each of said TFT layer,
said LCD layer, and said color filter layer including individual elements thereon, with an area between said individual elements
and wherein at least said polarization layer multiple openings which pass infrared, said openings being at locations that are in registration with areas in between said individual elements,
and where another of said layers, that underlies said polarization layer, includes multiple areas which include infrared filters that pass infrared and block light that is not infra red, said multiple areas being at locations that are in registration with areas that are between multiple individual elements,
and where another of said layers underlying said infrared filter includes multiple different infrared receivers that receives the infrared through said opening and said infrared filter, and where said opening and said filter and said receiver are located in registration with one another, such that infrared passes through the opening and passes through the filter and passes to the receiver and where said multiple different infrared receivers are located in between said multiple individual elements.

11. The assembly as in claim 10 , wherein said infrared receiver is located in the backlight.

12. The assembly as in claim 11 , wherein said backlight is located on an outer edge of the layers.

13. The assembly as in claim 11 , wherein the backlight is a direct LED backlight layer.

14. The assembly as in claim 13 , further comprising a hole in the back light layer through which a cable is run.

15. The assembly as in claim 10 , wherein said infrared filter is located on the color filter layer.

16. The assembly as in claim 10 , wherein the opening is located in the polarization layer.

17. The assembly as in claim 10 , wherein there is an outer edge of the area that has no pixels thereon, and wherein said openings, said filter, and said receiver are located in said outer edge.

18. A method of receiving infra-red in a television, comprising:
creating an image from pixels formed from a plurality of stacked controllable layers that are illuminated by a backlight;
said plurality of layers including a backlight layer, a polarization layer adjacent the backlight, a TFT layer over the polarization layer, an LCD layer overlying the TFT layer, and a color filter layer overlying the LCD layer, each of said TFT layer, said LCD layer, and said color filter layer including individual elements thereon, with an area between said individual elements,
and wherein at least said polarization layer multiple openings which pass infrared, said openings being at locations that are in registration with areas in between said individual elements,
and where another of said layers, that underlies said polarization layer, includes multiple areas which include infrared filters that pass infrared and block light that is not infra red, said multiple areas being at locations that are in registration with areas that are between multiple individual elements and where another of said layers underlying said infrared filter includes multiple different infrared receivers that receives the infrared through said opening and said infrared filter, and where said opening and said filter and said receiver are located in registration with one another, such that infrared passes through the opening and passes through the filter and passes to the receiver and where said multiple different infrared receivers are located in between said multiple individual elements.

19. The method as in

Assignees

• Vizio Inc

Inventors

• Mcrae Matthew Blake

Classifications

• H04N5/64

  Constructional details of receivers, e.g. cabinets or dust covers (furniture aspects {of television cabinets} A47B81/06) · CPC title

• H04N2005/4426

  Electricity · mapped topic

• G01J2001/4473

  Phototransistor · CPC title

• G01J1/44 Primary

  Electric circuits {(for command of an exposure part G03B7/02)} · CPC title

• G02B5/201

  in the form of arrays · CPC title