INTEGRAL OPTICAL SENSOR PACKAGE

• US 20150034804A1
• Filed: 07/17/2012
• Published: 02/05/2015
• Est. Priority Date: 04/23/2012
• Status: Active Grant

• Current Assignee: Raytron Incorporated
• Original Assignee: Raytron Incorporated
• Inventors: Lee, Hyun Young
• Granted Patent: US 10,224,352 B2
• Time in Patent Office: Days
• US Class Current: 250/208.2
• CPC Class Codes: G01J 1/0411 using focussing or collimating elements, i.e. lenses or mirrors; Aberration correction
• CPC Class Codes: G01J 1/4228 arrangements with two or more detectors, e.g. for sensitivity compensation
• CPC Class Codes: G08C 23/04 using light waves, e.g. infrared
• CPC Class Codes: H01L 2224/45144 Gold (Au) as principal constituent
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/48137 the bodies being arranged next to each other, e.g. on a common substrate
• CPC Class Codes: H01L 2224/48247 connecting the wire to a bond pad of the item
• CPC Class Codes: H01L 2224/8592 Applying permanent coating, e.g. protective coating
• CPC Class Codes: H01L 25/167 comprising optoelectronic devices, e.g. LED, photodiodes
• CPC Class Codes: H01L 27/1443 with at least one potential jump or surface barrier
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2924/12044 OLED
• CPC Class Codes: H01L 31/02002 Arrangements for conducting electric current to or from the device in operations
• CPC Class Codes: H01L 31/0203 Containers; Encapsulations , e.g. encapsulation of photodiodesfor photovoltaic devices H01L31/048; for organic photosensitive devices H10K30/80
• CPC Class Codes: H01L 31/02327 the optical elements being integrated or being directly associated to the device, e.g. back reflectors optical coatings H01L31/0216

Abstract

The present invention relates to an integral optical sensor package. More particularly, the present invention relates to an integral optical sensor package in which a light sensor for receiving a visible light band and a remote control sensor for receiving a light signal of an IR band are integrated such that the two sensors may receive the light of the unique light bands thereof without mutual interference. Further, a light-emitting means for indicating the operation of the remote control sensor can be integrated with the light sensor and the remote control sensor, thus reducing the number of processes and costs for manufacturing an apparatus.

Claims

1. An integrated optical sensor package, comprising:

a remote control sensor unit including one or more remote control elements for receiving a light signal in an infrared (IR) band, converting the light signal in the infrared band into a first electrical signal, and outputting the first electrical signal;

an illuminance sensor for receiving a light signal in a visible light band, converting the light signal in the visible light band into a second electrical signal, and outputting the second electrical signal;

a lead frame including one or more mounting parts in which the one or more remote control elements and the illuminance sensor are respectively mounted, the lead frame having one or more output terminals for outputting the first and second electrical signals output from the one or more remote control elements and the illuminance sensor to outside of the lead frame; and

a housing for accommodating the remote control sensor unit and the illuminance sensor,

wherein the one or more remote control elements are coated with an IR coating agent for transmitting only light in the IR band and blocking light in bands other than the IR band, and

wherein the illuminance sensor is coated with a visible light coating agent for transmitting only light in the visible light band and blocking light in bands other than the visible light band.

2. The integrated optical sensor package of claim 1, wherein the remote control sensor unit further includes one or more lenses formed to protrude upwardly from a top surface of the housing and to transmit light in the IR band, a shield case to shield the remote control sensor unit from disturbance light and electromagnetic waves within the housing, and an amplification element to amplify the first electrical signal output from the remote control elements.

3. The integrated optical sensor package of claim 1, wherein

the one or more output terminals are formed to protrude from a front surface of the housing and to be bent downwardly and extend in parallel with a bottom surface of the housing.

4. The integrated optical sensor package of claim 1, wherein the integrated optical sensor package is a surface mount device type.

5. The integrated optical sensor package of claim 1, wherein the housing further includes a convex lens formed to protrude upwardly from a top surface of the housing just above the illuminance sensor.

6. An integrated optical sensor package, comprising:

a housing made of a light-transmitting compound;

a remote control sensor unit to selectively receive only a light signal in an infrared (IR) band from among light signals incident into the housing, convert the received light signal into an electrical signal, and output the electrical signal;

light emitting unit to indicate that the remote control sensor unit has received the light signal in the IR band, via light emission; and

a lead frame including one or more mounting parts in which the remote control sensor unit and the light emitting unit are respectively mounted, the lead frame having one or more output terminals for outputting the electrical signal output from the remote control sensor unit to outside of the lead frame.

7. The integrated optical sensor package of claim 6, wherein the remote control sensor unit includes:

a remote control element for receiving light in an IR band, converting the light into an electrical signal, and outputting the electrical signal;

a remote control Integrated Circuit (IC) for amplifying the electrical signal output from the remote control element;

a first light-shading resin applied to a top surface of the remote control element to selectively transmit only light in the IR band; and

a shield case for sealing tops and opposite sides of the remote control element and the remote control IC, thus eliminating noise.

8. The integrated optical sensor package of claim 7, further comprising a second light-shading resin applied to a top surface of the remote control IC to block light in all bands.

9. The integrated optical sensor package of claim 6, wherein the light emitting unit indicates reception of a remote control signal via light emission in response to a control signal applied by any one of a control unit of a device, in which the integrated optical sensor package is mounted, and the remote control sensor unit.

10. The integrated optical sensor package of claim 6, wherein the remote control sensor unit further includes a lens formed to protrude upwardly from a top surface of the housing and to transmit light in the IR band.

11. The integrated optical sensor package of claim 6, further comprising an illuminance sensor mounted on the lead frame to conduct electrical signals and to sense surrounding illuminance.

12. The integrated optical sensor package of claim 6, wherein an illuminance sensor is coated with a visible light coating agent for transmitting only light in the visible light band.

13. The integrated optical sensor package of claim 6, wherein the integrated optical sensor package is a surface mount device type.

14. The integrated optical sensor package of claim 7, further comprising an illuminance sensor mounted on the lead frame to conduct electrical signals and to sense surrounding illuminance.

15. The integrated optical sensor package of claim 8, further comprising an illuminance sensor mounted on the lead frame to conduct electrical signals and to sense surrounding illuminance.

16. The integrated optical sensor package of claim 9, further comprising an illuminance sensor mounted on the lead frame to conduct electrical signals and to sense surrounding illuminance.

17. The integrated optical sensor package of claim 10, further comprising an illuminance sensor mounted on the lead frame to conduct electrical signals and to sense surrounding illuminance.