Electronic device and methods

• US 9,709,295 B2
• Filed: 03/14/2014
• Issued: 07/18/2017
• Est. Priority Date: 03/15/2013
• Status: Active Grant

• Current Assignee: Ademco Inc. (Resideo Technologies, Inc.)
• Original Assignee: Honeywell International Inc.
• Inventors: Mcpherson, Steven J., Eppinger, Daniel, Adamik, Petr, Khoury, Tarik, Kalla, Arnie, Takach, Eugene J., Aljabari, Mohammad, Lentz, Tracy, Mulhouse, David
• Primary Examiner(s): Sinclair, David M
• Assistant Examiner(s): Milliser, Theron S
• Application Number:
  US14/214,369
• Publication Number:
  US 20140268602A1
• Time in Patent Office: 1,222 Days
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/32 Responding to malfunctions or emergencies
• CPC Class Codes: F24F 11/52 Indication arrangements, e.g. displays
• CPC Class Codes: G01K 7/42 Circuits effecting compensation of thermal inertia; Circuits for predicting the stationary value of a temperature
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133314 Back frames
• CPC Class Codes: G05D 23/1904 variable in time
• CPC Class Codes: G05D 23/1905 associated with tele control
• CPC Class Codes: G05D 23/32 with provision for adjustment of the effect of the auxiliary heating device, e.g. a function of time
• CPC Class Codes: H01R 4/34 Conductive members located under head of screw
• CPC Class Codes: H02G 3/10 for surface mounting on a wall
• CPC Class Codes: H02G 3/14 Fastening of cover or lid to box
• CPC Class Codes: H02H 9/005 avoiding undesired transient conditions
• CPC Class Codes: H02H 9/04 responsive to excess voltage lightning arrestors H01C7/12, H01C8/04, H01G9/18, H01T
• CPC Class Codes: H05F 3/00 Carrying-off electrostatic charges from shoes A43B7/36; from living beings A61N1/14; from tyres B60C19/08; from vehicles B60R16/06; from aircraft B64D45/02; from large containers B65D90/46
• CPC Class Codes: H05K 1/0254 High voltage adaptations; Electrical insulation details; Overvoltage or electrostatic discharge protection electrostatic discharge protection for electric apparatus in general H05K9/0067, H05K9/0079; Arrangements for regulating voltages or for using plural voltages
• CPC Class Codes: H05K 1/111 Pads for surface mounting, e.g. lay-out
• CPC Class Codes: H05K 13/00 Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
• CPC Class Codes: H05K 13/0015 Orientation; Alignment; Positioning
• CPC Class Codes: H05K 3/32 electrically connecting electric components or wires to printed circuits
• CPC Class Codes: H05K 5/0017 : with operator interface units
• CPC Class Codes: H05K 5/0018 : having an electronic display
• CPC Class Codes: H05K 7/1422 : Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
• CPC Class Codes: H05K 7/1427 : Housings
• CPC Class Codes: H05K 9/0037 : Housings with compartments containing a PCB, e.g. partitioning walls
• CPC Class Codes: H05K 9/0054 : specially adapted for display applications
• CPC Class Codes: Y10T 29/49002 : Electrical device making
• CPC Class Codes: Y10T 29/49124 : On flat or curved insulated base, e.g., printed circuit, etc.
• CPC Class Codes: Y10T 29/4913 : Assembling to base an electrical component, e.g., capacitor, etc.
• CPC Class Codes: Y10T 29/49826 : Assembling or joining

Abstract

An electronic assembly may have a display, a display holder, and a printed circuit board (PCB). The display may have a front side for viewing the display, a back side, and side walls extending between the front side and the back side. The display holder may have a recess for receiving at least part of the display, where the display holder may extend adjacent part of the front side of the display and adjacent at least part of the side walls of the display. The PCB may be secured relative to the display holder and adjacent the back side of the display. The PCB may be in operative communication with the display. In some cases, a spacer may be situated between the back side of the display and the PCB.

Claims

1. An electronic assembly, comprising:

a display having a front side for viewing the display, a back side, and two or more side walls extending between the front side and the back side;

a display holder having a recess for receiving at least part of the display, the display holder extending adjacent to part of the front side of the display, and further extending adjacent to a plurality of side walls of the display with no intervening structure between the plurality of side walls of the display holder and the display;

a printed circuit board secured relative to the display holder and adjacent the back side of the display, the printed circuit board has a back side, a front side, and outer side walls extending between the front side and the back side of the printed circuit board, the printed circuit board in operative communication with the display;

a spacer situated between the back side of the display and the printed circuit board, the spacer including a plurality of openings that extend through the spacer resulting in a plurality of air gaps between the back side of the display and the printed circuit board; and

the spacer has side walls extending along at least two of the outer side walls of the printed circuit board, and the side walls of the spacer that extend along at least two of the outer side walls of the printed circuit board are formed entirely of an electrically insulating material.

2. The electronic assembly of claim 1, further comprising:

a back cover configured to engage the display holder and define a gap between the back cover and the display holder;

the display holder having side walls; and

wherein the spacer mates with the display holder such that the respective side walls of the mated spacer and display holder form a distance that an electrostatic discharge must travel from the gap to reach the printed circuit board.

3. The electronic assembly of claim 2, wherein the distance an electrostatic discharge must travel from the gap to reach the printed circuit board is at least 5 millimeters.

4. The electronic assembly of claim 1, wherein the front side of the printed circuit board faces the display holder, and the side walls of the spacer that extend along at least two of the side walls of the printed circuit board extend beyond the back side of the printed circuit board to a terminal end of the spacer.

5. The electronic assembly of claim 1, wherein:

the display holder includes an alignment feature;

the spacer includes an alignment feature, wherein the alignment feature of the spacer is configured to cooperate with the alignment feature of the display holder to align the spacer and the display holder.

6. The electronic assembly of claim 5, wherein:

the alignment feature of the spacer includes a rib; and

the alignment feature of the display holder includes a pocket, where the pocket of the display holder is configured to cooperate with the rib of the spacer to align the spacer with the display holder.

7. The electronic assembly of claim 1, wherein the spacer contacts the back side of the display and the printed circuit board at a location between the plurality of openings that extend through the spacer.

8. The electronic assembly of claim 1, wherein the display holder includes one or more wall extensions that engage the printed circuit board, and a latch that engages the printed circuit board.

9. The electronic assembly of claim 1, wherein the display is sandwiched between the display holder and the printed circuit board.

10. The electronic assembly of claim 1, further comprises a gasket situated between the display holder and the front side of the display.

11. An electronic assembly, comprising:

a display having a front side for viewing the display, a back side, and side walls extending between the front side and the back side;

a display holder having a recess for receiving at least part of the display, the display holder extending adjacent part of the front side of the display and adjacent at least part of the side walls of the display;

a printed circuit board secured relative to the display holder and adjacent the back side of the display, the printed circuit board has a back side, a front side, and outer side walls extending between the front side and the back side of the printed circuit board;

a spacer situated between the back side of the display and the printed circuit board, the spacer has side walls extending along at least two of the outer side walls of the printed circuit board wherein the spacer is formed entirely of an electrically insulating material;

the display holder includes an alignment feature;

the spacer includes an opening, wherein the alignment feature of the display holder is received by the opening of the spacer to help align the spacer and the display holder; and

the display holder including one or more features to secure the printed circuit board to the display holder.

12. The electronic assembly of claim 11, wherein the one or more features of the display holder includes a latch to latch the printed circuit board to the display holder, sandwiching the display and the spacer between the display holder and the printed circuit board.

13. The electronic assembly of claim 12, wherein the one or more features of the display holder includes a releasable hinge for hinging the printed circuit board with respect to the display holder until the latch latches the hinged printed circuit board relative the display holder.

14. The electronic assembly of claim 13, wherein the display and the spacer are sandwiched between the display holder and the printed circuit board.

15. The electronic assembly of claim 11, wherein the spacer mates with the display holder and maintains a space between the display and the printed circuit board.

16. The electronic assembly of claim 11, wherein the spacer includes two or more apertures extending through the spacer that result in an air gap between the back side of the display and the printed circuit board.

17. The electronic assembly of claim 16, wherein the printed circuit board includes one or more components, wherein at least one of the one or more components extends into an aperture of the spacer.

18. The electronic display of claim 11, wherein the spacer extends along the back side of the display, and along a first two opposing side walls of the display but not along a second two opposing side walls of the display.

19. An electronic assembly, comprising:

a display having a front side for viewing the display, a back side, and side walls extending between the front side and the back side;

a display holder having a recess for receiving at least part of the display, the display holder extending adjacent part of the front side of the display and adjacent at least part of the side walls of the display;

a printed circuit board secured relative to the display holder and adjacent the back side of the display, the printed circuit board has a back side, a front side, and outer side walls extending between the front side and the back side of the printed circuit board;

a spacer situated between the back side of the display and the printed circuit board, wherein the spacer has side walls extending along at least two of the outer side walls of the printed circuit board, and wherein the side walls of the spacer that extend along at least two of the outer side walls of the printed circuit board are formed entirely of an electrically insulating material; and

the display holder including a latch to engage and latch the printed circuit board to the display holder, sandwiching the display and the spacer between the display holder and the printed circuit board and to prevent the spacer from moving away from the display when the latch engages the printed circuit board.

20. A method of assembling an electronic assembly, the method comprising:

inserting a front side of a display having the front side for viewing the display, a back side, and two or more side walls extending between the front side and the back side, into a recess of a display holder such that the display holder extends adjacent part of the front side of the display and also adjacent at least part of a plurality of side walls of the display with no intervening structure between the plurality of side walls of the display holder and the display;

aligning one or more alignment features of a spacer with one or more corresponding alignment features of the display holder, and placing the spacer adjacent a back side of the display, wherein the spacer includes a plurality of openings that extend through the spacer resulting in a plurality of air gaps between the back side of the display and a printed circuit board that is in operative communication with the display;

aligning one or more alignment features of the printed circuit board with one or more corresponding alignment features of the display holder, and placing the printed circuit board adjacent to the spacer opposite the backside of the display, wherein the printed circuit board has a back side, a front side, and outer side walls extending between the front side and the back side of the printed circuit board, the spacer has side walls extending along at least two of the outer side walls of the printed circuit board, and wherein the side walls of the spacer that extend along at least two of the outer side walls of the printed circuit board are formed entirely of an electrically insulating material; and

after placing the printed circuit board adjacent to the spacer opposite the back side of the display, engaging a latch of the display holder with the printed circuit board to secure the printed circuit board relative to the display holder with the display and the spacer secured therebetween.

21. The method of claim 20 further comprising, electrically connecting a connector of the display to a connector on the printed circuit board.