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

• US 20160195428A1
• Filed: 01/06/2015
• Published: 07/07/2016
• Est. Priority Date: 01/06/2015
• Status: Active Grant

• Current Assignee: VIZIO, Inc.
• Original Assignee: VIZIO, Inc.
• Inventors: McRae, Matthew Blake
• Granted Patent: US 9,719,851 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01J 1/0488 with spectral filtering
• CPC Class Codes: G01J 1/44 Electric circuits for command of an exposure part G03B7/02
• CPC Class Codes: G01J 2001/4473 Phototransistor
• CPC Class Codes: G02B 5/201 in the form of arrays
• CPC Class Codes: G02B 5/208 for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G02F 1/133603 with LEDs
• CPC Class Codes: G02F 1/1368 in which the switching element is a three-electrode device G02F1/136277 takes precedence
• CPC Class Codes: G02F 2203/11 involving infrared radiation
• CPC Class Codes: H04N 21/42204 User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor constructive details of casings for the remote control device H01H9/0235; user interfaces for controlling a tuning device of a television receiver through a remote control H03J9/00; remote control of peripheral devices connected to a television receiver through the remote control device of the television receiver H04B1/205
• CPC Class Codes: H04N 21/42221 Transmission circuitry, e.g. infrared [IR] or radio frequency [RF]
• CPC Class Codes: H04N 5/64 Constructional details of receivers, e.g. cabinets or dust covers furniture aspects of television cabinets A47B81/06

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.

Claims

1. 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,

an switching layer with individual elements that form said pixels and that is modulated to create the image;

a color filter layer,

and at least one polarization layer,

and wherein at least one of said layers includes an opening, and another of said layers includes an infrared filter that only passes infrared,

and another of said layers includes an infrared receiver that receives the infrared and wherein 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.

2. The assembly as in claim 1, wherein said infrared receiver is located in the backlight.

3. The assembly as in claim 2, wherein said backlight is located on an outer edge of a layer.

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 opening is located in the polarization layer.

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,

and wherein at least one of said 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 filter 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.

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.

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.

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

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, 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,

and wherein at least one of said 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 filter 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.

19. The method as in claim 18, wherein said infrared receiver is located in the backlight.

20. The method as in claim 18, wherein said creating the image comprises backlighting from an outer edge of the layers.

21. The method as in claim 18, wherein said creating the image comprises backlighting from the whole of the layers.

22. The method as in claim 18, wherein said infrared filter is located on the color filter layer.

23. The method as in claim 18, wherein the opening is located in the polarization layer.

24. The method as in claim 18, 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.