Light blocker

Abstract

A controller includes a housing. The controller includes a backlight holder disposed within the housing. The controller includes a light blocker disposed within the housing. The light blocker is configured to be secured to the backlight holder. The light blocker is configured to block light from a backlight.

Description

Atorney Docket No. 203863-019201 / PCTResideo Ref. No. (R214522-WO) Electronically Filed: October 15. 2025LIGHT BLOCKERCROSS REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit of, and priority to, U.S. Provisional Patent Application No. 63 / 707,339 filed October 15. 2024, the entire contents of which are incorporated herein by reference.FIELD

[0002] This disclosure relates generally to electronic device displays. More particularly, this disclosure relates to electronic device displays on devices such as, but not limited to, controllers for use in aheating, ventilation, and air conditioning (HVAC) system.BACKGROUND

[0003] Controllers are used on a wide variety’ of devices and systems for controlling various functions in buildings. Some controllers have limited capabilities for customizing the operations to a particular user. Some controllers for controlling various functions in buildings include, for example, HVAC controllers, water heater controllers, water softener controllers, security system controllers, lawn sprinkler controllers, and lighting system controllers.SUMMARY

[0004] In some embodiments, a controller includes a housing. In some embodiments, a backlight holder is disposed within the housing. In some embodiments, a light blocker is disposed within the housing. In some embodiments, the light blocker is configured to be secured to the backlight holder. In some embodiments, the light blocker is configured to block light from a backlight.

[0005] In some embodiments, the light blocker is secured to the backlight holder via a press fit connection.

[0006] In some embodiments, the light blocker is secured to the backlight holder using an adhesive.

[0007] In some embodiments, the light blocker is a single piece, unitary construction.

[0008] In some embodiments, the light blocker has a thickness of up to 1 mm.1ACTIVE 715544302v1Atorney Docket No. 203863-019201 / PCTResideo Ref. No. (R214522-WO) Electronically Filed: October 15. 2025

[0009] In some embodiments, the light blocker includes a plurality of hinges formed by reducing a thickness of the light blocker at a location of the plurality of hinges.

[0010] In some embodiments, the light blocker is formed of an injection moldable material.

[0011] In some embodiments, the injection moldable material is polypropylene.

[0012] In some embodiments, the light blocker is opaque.

[0013] In some embodiments, the light blocker is formed of a plurality of materials. In some embodiments, a first material is opaque, and a second material is reflective to control a reflection of light from the light blocker.

[0014] In some embodiments, the backlight holder has a first major dimension, and the light blocker has a second major dimension.

[0015] In some embodiments, the first major dimension is larger than the second major dimension.

[0016] In some embodiments, the second major dimension is up to 90% of the first major dimension.

[0017] In some embodiments, the controller is a thermostat for a heating, ventilation, and air conditioning system.

[0018] In some embodiments, the backlight holder includes a plurality of protrusions, and the light blocker includes a plurality of apertures. In some embodiments, the plurality of apertures is configured to receive the plurality7of protrusions to align the backlight holder and the light blocker.

[0019] In some embodiments, the light blocker includes a first end opposite a second end. In some embodiments, the second end is secured to the backlight holder. In some embodiments, the first end is configured to abut a backlight lens in an installed configuration.

[0020] In some embodiments, wherein the first end of the light blocker includes an angled portion configured to be angled toward the backlight lens.

[0021] In some embodiments, a device includes a housing. In some embodiments, a printed circuit board has a first side and a second side opposite the first side. In some2ACTIVE 715544302v1Atorney Docket No. 203863-019201 / PCTResideo Ref. No. (R214522-WO) Electronically Filed: October 15. 2025 embodiments, a light emitting diode (LED) is disposed on the first side of the printed circuit board. In some embodiments, a backlight holder is disposed within the housing. In some embodiments, the backlight holder disposed adjacent the second side of the printed circuit board. In some embodiments, a light blocker is disposed within the housing. In some embodiments, the light blocker is configured to be secured to the backlight holder. In some embodiments, the light blocker is configured to block light from the backlight.BRIEF DESCRIPTION OF THE DRAWINGS

[0022] References are made to the accompanying drawings that form a part of this disclosure and that illustrate embodiments in which the systems and methods described in this Specification can be practiced.

[0023] FIG. 1 is a schematic view of a building including a heating, ventilation, and air conditioning (HVAC) system, according to some embodiments.

[0024] FIG. 2 is a schematic view of the controller of FIG. 1, according to some embodiments.

[0025] FIG. 3 shows a front view of the controller of FIG. 1, according to some embodiments.

[0026] FIG. 4 shows a side sectional view of the controller of FIG. 1 , according to some embodiments.

[0027] FIG. 5 shows a perspective view of the light blocker of FIG. 4 connected to the backlight holder of FIG. 4, according to some embodiments.

[0028] FIG. 6 shows a front view of the light blocker of FIG. 4, according to some embodiments.

[0029] FIG. 7 shows a rear view of the light blocker of FIG. 4, according to some embodiments.

[0030] FIG. 8 shows a side view of the light blocker of FIG. 4, according to some embodiments.

[0031] Like reference numbers represent the same or similar parts throughout.3ACTIVE 715544302v1Atorney Docket No. 203863-019201 / PCTResideo Ref. No. (R214522-WO) Electronically Filed: October 15. 2025DETAILED DESCRIPTION

[0032] Some displays may utilize a light emitting diode (LED) as a backlight for a liquid crystal display (LCD). In some instances, light from the LED may leak through unintended locations, causing bright spots on the display. Bright spots on the display can be viewed as a defect by a user or may make viewing the display difficult to the user.

[0033] Embodiments of this disclosure are directed to a light blocker for use in a display to prevent formation of bright spots on the display. In some embodiments, the light blocker can be included in a device that can be a controller. In some embodiments, the controller can be a device for controlling one or more systems in a home such as, but not limited to, a heating, ventilation, and air conditioning (HVAC) system, a security system, combinations thereof, or the like. In some embodiments, the light blocker can be included in a thermostat. Embodiments of this disclosure can block light from leaking toward the display. As a result, inclusion of the light blocker can improve a display quality and a user experience for devices including the light blocker.

[0034] FIG. l is a schematic view of a building 100 including a heating, ventilation, and air conditioning (HVAC) system 102, according to some embodiments. The HVAC system 102 can be configured to control one or more environmental conditions within one or more spaces (e.g., conditioned spaces) of the building 100.

[0035] In the illustrated embodiment, the HVAC system is representative of a forced air type HVAC system. It is to be appreciated that other types of HVAC systems are within the scope of the present disclosure. Examples of other types of HVAC system include, but are not limited to, boiler systems, radiant heating systems, electric heating systems, cooling systems, heat pump systems, combinations thereof, or any other suitable type of HVAC system.

[0036] The HVAC system 102 includes one or more HVAC components 104, a system of ductwork and air vents including a supply air duct 106 and a return air duct 108, and at least one controller 110. In some embodiments, the controller 110 can be referred to as the building controller, the HVAC controller, or the like. In some embodiments, the controller 110 can be a thermostat, a plurality of thermostats, or the like. The one or more HVAC components 104 can include, but are not limited to, a furnace, a heat pump, an electric heat pump, a geothermal heat pump, an electric heating unit, an air conditioning unit, a4ACTIVE 715544302v1Atorney Docket No. 203863-019201 / PCTResideo Ref. No. (R214522-WO) Electronically Filed: October 15. 2025 ventilation unit, a humidifier, a dehumidifier, an air exchanger, an air cleaner, a damper, a valve, combinations thereof, or the like.

[0037] In some embodiments, the controller 110 may be configured to control the comfort level and, in some embodiments, the air quality conditions in the building by activating and deactivating the one or more HVAC components 104 in a controlled manner. In some embodiments, the controller 110 can be configured to control one or more other systems in the building besides the HVAC system. For example, the controller 110 can control one or more components related to security, control of appliances, control of systems such as water systems, combinations thereof, or the like. The controller 110 can be configured to control the one or more HVAC components 104 via a wired or wireless communication link 112. The controller 1 10 may wirelessly communicate with the one or more HVAC components 104 or other systems using a wireless protocol such as, but not limited to, cellular communication, ZigBee, Bluetooth, Wi-Fi, IrDA, dedicated short range communication (DSRC), EnOcean, combinations thereof, or any other suitable wireless protocols.

[0038] In some embodiments, the controller 110 is a thermostat. In some embodiments, the thermostat can include (e.g., within a housing of the thermostat) or have access to a temperature sensor for sensing an ambient temperature at or near the thermostat. In some embodiments, the controller 110 can be a zone controller, or can include multiple zone controllers each monitoring, controlling, or combinations thereof, the comfort level within a particular zone in the building.

[0039] In the illustrated embodiment, the one or more HVAC components 104 may provide heated air, cooled air, or a combination thereof, via the ductwork throughout the building 100. In some embodiments, the one or more HVAC components 104 can be in fluid communication with the conditioned space (e.g., each room, zone, or combination thereof) in the building 100 via the ductwork.

[0040] In some embodiments, when a heat call signal is provided by the controller 110, the one or more HVAC components 104 (e.g., forced warm air furnace) can be activated to supply heated air to the conditioned space within the building 100 via supply air duct 106. The heated air may be forced through supply air duct 106 by a blower or fan 114. In this example, the cooler air from the conditioned space can be returned to the one or more HVAC components 104 for heating via return air duct 108. Similarly, when a cool call5ACTIVE 715544302v1Atorney Docket No. 203863-019201 / PCTResideo Ref. No. (R214522-WO) Electronically Filed: October 15. 2025 signal is provided by the controller 110, the one or more HVAC components 104 (e.g., air conditioning unit) can be activated to supply cooled air to the conditioned space within the building via the supply air duct 106. In some embodiments, the cooled air may be forced through supply air duct 106 by the blower or fan 1 14. In this example, the warmer air from each zone may be returned to the one or more HVAC components 104 for cooling via the return air duct 108.

[0041] In some embodiments, the system of vents or ductwork can include one or more dampers 116 to regulate the flow of air. For example, one or more dampers 116 may be coupled to the controller 110 and the controller 110 can coordinate the one or more dampers 116 with the operation of the one or more HVAC components 104. The controller 110 can actuate the one or more dampers 116 to an open position, a closed position, or a partially open position to modulate the flow of air from the one or more HVAC components 104 to an appropriate space within the building. The one or more dampers 116 may be included in zoned HVAC systems and may be used to control which zone or zones receives conditioned air from the one or more HVAC components 104.

[0042] Additionally, in some embodiments, the one or more HVAC components 1 4 may exhaust stale air, supply fresh air, or combinations thereof, to the building 100 via the ductwork located throughout the building 100. For example, in some embodiments, the one or more HVAC components 104 can include a ventilation unit 118, which can draw outside air into the building via an outside air intake 120 and expel inside air via an inside air outlet 122. In some embodiments, a heat exchanger (not shown) can be provided to exchange heat between the outgoing inside air and the incoming outside air. In some embodiments, the ventilation unit 118 can include additional fans, blowers, or combinations thereof to facilitate the exchange of stale air from within the building 100 with fresh air supplied from outside the building 100.

[0043] In some embodiments, the ventilation unit 1 18 can include a ventilation controller (not shown), that can receive ventilation commands from, for example, the controller 110, and in response, can activate or deactivate the various components of the ventilation unit 118 to implement the received ventilation commands. In some embodiments, the ventilation unit 21 may be coupled to additional ductwork which may draw stale air from different locations within the building 100 to be exhausted from the building via the inside air outlet 122. It is to be appreciated that these are just examples.6ACTIVE 715544302v1Atorney Docket No. 203863-019201 / PCTResideo Ref. No. (R214522-WO) Electronically Filed: October 15. 2025

[0044] In some embodiments, the ventilation unit 118 can be controlled according to a schedule or setpoint stored in the controller 110. In some embodiments, the controller 110 can be configured to allow a user to select time periods during which the ventilation unit 118 will operate or not operate. In some embodiments, the controller 110 can be configured to allow a user to select a speed the ventilation unit 118 will operate during each period selected. In some embodiments, the controller 110 can be configured to allow a user to specify when the ventilation unit 118 can operate at a reduced level to conserve energy while at the same time maintaining the indoor air quality within the building 100 at an acceptable level such as for example, in accordance with a user's vacation schedule.

[0045] The one or more HVAC components 104 can also provide humidification, dehumidification, or combinations thereof within the building 100. In some embodiments, humidification or dehumidification can be provided by a humidifier unit or a dehumidifier unit, as applicable, in a controlled manner according to a schedule or setpoint stored in the controller 110. In some embodiments, the controller 110 can be configured to allow a user to select certain time periods in which the humidification unit or dehumidification unit will operate or not operate. In some embodiments, the controller 110 can be configured to allow a user to select a setpoint the humidification unit or dehumidification unit will operate during each period. In some embodiments, the controller 110 can be configured to allow a user to specify when the humidification unit or dehumidification unit may operate at a reduced level to conserve energy while maintaining the indoor air quality within the building 100 at an acceptable level such as for example, in accordance with a user's vacation schedule.

[0046] The HVAC system 102 can include a communications gateway 124 that allows one or more of the one or more HVAC components 104 to communicate wirelessly with one another in accordance with a wireless communications protocol such as, for example, cellular communication, ZigBee, Bluetooth, Wi-Fi, IrDA, dedicated short range communication (DSRC), EnOcean, combinations thereof, or any other suitable wireless protocols, as desired. In some embodiments, the communications gateway 124 can facilitate communication between the one or more HVAC components 104 over a local area network (TAN), a wide area network (WAN), or the Internet.

[0047] In some embodiments, one or more air filters 126 can be used to remove dust and other pollutants from the air inside the building 100. In the illustrated embodiment, the7ACTIVE 715544302v1Atorney Docket No. 203863-019201 / PCTResideo Ref. No. (R214522-WO) Electronically Filed: October 15. 2025 one or more air filters 126 are installed in the return air duct 108 and can filter the air prior to the air entering the one or more HVAC components 104. It is to be appreciated that any other suitable location for the one or more air filters 126 can be used. The one or more air filters 126 can, in some embodiments, improve the indoor air quality and protect the one or more HVAC components 104 from dust and other particulate matter.

[0048] In some embodiments, the HVAC system 102 includes an equipment interface module (EIM) 128. In some embodiments, the EIM 128 can be configured to communicate with the controller 110 via, for example, a wired or wireless communication link 130. In some embodiments, the EIM 128 can be incorporated or combined with the controller 110. In some embodiments, the EIM 128 may communicate, relay, or otherwise transmit data regarding a selected parameter (e g., temperature, pressure, flowrate, etc.) to the controller 110. In some embodiments, the controller 110 may use the data from the EIM 128 to evaluate the system’s operation or performance.

[0049] In some embodiments, the EIM 128 can include one or more terminals that can be wired to various components in the building 100. For example, in some embodiments, the EIM 128 can be connected in electrical communication with an electronic device such as, but not limited to, a window or door sensor configured to indicate whether a door or window is opened or closed; the EIM 128 can be connected in electrical communication with a leak detector configured to indicate when a water leak is present; the EIM 128 can be connected in electrical communication with one or more air quality sensors such as, but not limited to, a carbon monoxide detector configured to indicate when an amount of carbon monoxide exceeds a threshold; combinations thereof, or the like. In some embodiments, the EIM 128 can provide information on a state of the connected electronic device to the controller 110. In some embodiments, a user or installer can customize an action taken by the controller 1 10 in response to the state information received from the EIM 128.

[0050] FIG. 2 is a schematic view of the controller 110, according to some embodiments. In some embodiments, the controller 110 can be a thermostat.

[0051] In the illustrated embodiment, the controller 110 includes a controller 150 (e.g., microprocessor, microcontroller, etc.), a user interface 152, and a memory 154. In some embodiments, the controller 110 can include an input / output block (I / O block) 156 for receiving one or more signals from the HVAC system 102, for providing one or more control signals to the HVAC system 102. or combinations thereof. For example, the I / O8ACTIVE 715544302v1Atorney Docket No. 203863-019201 / PCTResideo Ref. No. (R214522-WO) Electronically Filed: October 15. 2025 block 156 can communicate with one ormore HVAC components 104 ofthe HV AC system 102. Additionally, in some embodiments, the I / O block 156 can communicate with another controller, which is in communication with one or more HVAC components 104 of the HVAC system 102, such as a zone control panel in a zoned HVAC system, EIM 128, combinations thereof, or any other suitable building control device.

[0052] The controller 150 can operate in accordance with an algorithm that controls or at least partially controls the one or more HVAC components 104 of the HVAC system 102. The controller 150 can, for example, operate in accordance with an algorithm that provides temperature setpoints, starting times, ending times, combinations thereof, or the like. In some embodiments, the controller 150 can be configured to read a temperature sensed by the temperature sensor and control the one or more HVAC components 104 of the HVAC system 102 to maintain a desired temperature setpoint within the building 100 in accordance with a programmable schedule stored in the memory 154 of the controller 110. In some embodiments, the controller 150 can be configured to control the one or more HVAC components 104 including one or more indoor air quality units such as, for example a ventilation unit, a humidification unit, and / or a dehumidification unit, to maintain a desired indoor air quality within the building 100, sometimes in accordance with a programmable schedule stored in the memory 154 of the controller 110.

[0053] In some embodiments, the controller 110 can be programmed to control the one or more indoor air quality units according to a programmable operating schedule that includes one or more time periods. The programmable operating schedule in some embodiments the same period as the programmable operating schedule of the temperature setpoints (heating setpoints, cooling setpoints), or they may be different time periods. In some embodiments, the controller 150 can be programmed to allow a user to select at least a first period of the programmable operating schedule to control at least one of the one or more indoor air quality units (e.g., ventilation unit, humidifier unit, dehumidifier unit) differently than during at least one other of period of the programmable operating schedule. For example, the controller 150 can be programmed to allow a user to select a period in which an indoor quality unit will operate and a different period in which the indoor air quality unit will not operate (or will operate in a different mode, at a different speed, at a different setpoint, or at some other different setting). In some embodiments, the controller 150 can be programmed to allow a user to select which indoor air quality units will or will9ACTIVE 715544302v1Atorney Docket No. 203863-019201 / PCTResideo Ref. No. (R214522-WO) Electronically Filed: October 15. 2025 not operate during each period of the programmable operating schedule or during a user’s vacation schedule. In some embodiments, the controller 150 can be programmed to allow a user to select which indoor air quality units may operate at a reduced level to conserve energy while at the same time maintaining indoor air quality for a period identified by the user such as, for example, the user’s vacation schedule.

[0054] In some embodiments, user interface 152 can be any suitable user interface that permits controller 110 to display information as well as accept one or more user interactions with the controller 110. For example, the user interface 152 can permit a user to enter data such as temperature set points, humidity set points, starting times, ending times, diagnostic limits, conditions under which diagnostic limits may be suspended, responses to alerts, requests for ventilation, and / or the like. In some embodiments, the user interface 152 can be configured to enable a user to customize an output action taken based on a particular input.

[0055] In some embodiments, user interface 152 can include a display and a separate keypad. In some embodiments, a display can include any suitable display. In some embodiments, a display can be a liquid crystal display (LCD), and a fixed segment display, a dot matrix LCD display, combinations thereof, or the like. In some embodiments, user interface 152 can be a touch screen LCD panel that functions as both display and keypad. In some embodiments, a touch screen LCD panel may be adapted to solicit values for several operating parameters and to receive such values.

[0056] The memory 154 can be in communication with the controller 150. The memory 154 can be used to store any desired information, such as the control algorithm, setpoints, schedule times, combinations thereof, or the like. Memory 154 can be any suitable type of storage device including, but not limited to, RAM, ROM, EPROM, flash memory7, a hard drive, combinations thereof, or the like. In some embodiments, controller 150 can store information within memory 154 and retrieve the stored information.

[0057] In some embodiments, controller 110 includes a data port 158. Data port 158 can be a wireless port such as a Bluetooth™ port or any other wireless protocol. In some embodiments, data port 158 can be a wired port such as a serial port, a parallel port, a CATS port, a USB (universal serial bus) port, combinations thereof, or the like. In some embodiments, data port 158 can be a USB port and may be used to download and / or upload10ACTIVE 715544302v1Atorney Docket No. 203863-019201 / PCTResideo Ref. No. (R214522-WO) Electronically Filed: October 15. 2025 information from a USB flash drive or some other data source. Other remote devices may also be employed.

[0058] Data port 158 can be configured to communicate with controller 150 and can, if desired, be used to upload information to controller 150 or download information from controller 150.

[0059] FIG. 3 shows a front view of the controller 110, according to some embodiments. In the illustrated embodiment, the controller 110 can be a controller for controlling one or more settings of an HVAC system. In some embodiments, the controller 110 can be a thermostat. It is to be appreciated that the usage for the controller 110 can vary according to the principles of this disclosure and that a thermostat is an example. For example, other types of controllers include, but are not limited to, controllers for a security system or the like.

[0060] As shown in the illustrated embodiment, the controller 110 includes a housing 200 including a plurality of first buttons 202, a plurality of second buttons 204, and a display 206.

[0061] In some embodiments, the housing 200 can be formed of multiple components (see FIG. 4 below) such as a back housing and a front housing. In some embodiments, the housing 200 can include a portion 208 that may be removable. In some embodiments, the portion 208 can be swappable to, for example, change a color or other aesthetic of the controller 110. As such, the portion 208 may be referred to as a removable accent or the like for the portion of the housing 200.

[0062] The plurality of first buttons 202 and the plurality of second buttons 204 are input devices that may enable interaction with a user. For example, in some embodiments, the user may be able to use the plurality of first buttons 202 to select one or more options from the display 206. In some embodiments, the plurality of second buttons 204 can include one or more options to increase, decrease, or hold a particular setting such as, but not limited to, a temperature setting in a case of the controller 110 being a thermostat. It is to be appreciated that the term “buttons’" is not intended to be limiting. The plurality of first buttons 202 and the plurality of second buttons 204 can be different shapes, included in different numbers, or the like, in accordance with the disclosure herein.11ACTIVE 715544302v1Atorney Docket No. 203863-019201 / PCTResideo Ref. No. (R214522-WO) Electronically Filed: October 15. 2025

[0063] In some embodiments, the display 206 is a liquid crystal display (LCD) that utilizes a backlight (not show n in FIG. 3) to display information to a user. The display 206 can show a user information about the current operation of a corresponding system (e.g., HVAC system, security system, combination thereof, or the like). The display 206 can also provide one or more interfaces via which the user can modify one or more settings of the corresponding system. For example, a user can set a schedule of operation, a temperature, combinations thereof, or the like via a combination of the display 206 and the plurality of first buttons 202 and plurality of second buttons 204.

[0064] FIG. 4 shows a side sectional view of the controller 110, according to some embodiments.

[0065] The controller 110 includes the housing 200, which is shown including a back housing 250 and a front housing 252. The back housing 250 may be removably engaged with the front housing 252 to assemble the housing 200. The front housing 252 can include an opening via which the user is able to view the display 206. As visible in the sectional view, the portion 208 that is removable from the housing 200 is shown installed to the front housing 252.

[0066] Within the housing a printed circuit board 254 includes a light emitting diode (LED 256). In the illustrated embodiment, a single LED 256 is shown. The LED 256 is rear facing in the illustrated embodiment. That is, the LED 256 is directed from a side of the printed circuit board 254 that faces tow ard the back housing 250. It is to be appreciated that the usage of a single LED is an example, and that additional LEDs can be included on the printed circuit board 254. Additionally, the LED 256, if multiple are included, can be located at a different position in the housing 200 such as at an extent of the printed circuit board 254 in the major direction, the minor direction, or a combination thereof. The printed circuit board 254 includes additional features configured to enable the operations of the controller 110 such as. but not limited to, a thermistor, or the like.

[0067] A backlight lens 258 is disposed adjacent to the printed circuit board 254. The backlight lens 258 is formed on a backlight holder 260. The backlight holder 260 is configured to receive a light blocker 262. The light blocker 262 is configured to be secured to the backlight holder 260 and to block light that may otherwise shine through near the LED 256, which may concentrate on a particular location of an LCD window 264 of the display 206. In some embodiments, the LCD window 264 can be disposed in an LCD12ACTIVE 715544302v1Atorney Docket No. 203863-019201 / PCTResideo Ref. No. (R214522-WO) Electronically Filed: October 15. 2025 display assembly that can include one or more tabs for aligning the light blocker 262 when installing the light blocker 262 in the housing 200. In some embodiments, the inclusion of the light blocker 262 can prevent bright spots from being visible to a user of the controller 110.

[0068] In some embodiments, the light blocker 262 can be an injection molded component. As such, the light blocker 262 can be formed of an injection moldable material such as, but not limited to, polypropylene or the like. It is to be appreciated that other injection moldable materials can be used, and that polypropylene is an example. In some embodiments, the light blocker can be formed of an opaque material. In some embodiments, the opaque material can be selected to be black in color. In some embodiments, the opaque material can be selected to be a color other than black. Colors other than black include, but are not limited to, white, gray, gradients between white and black, or the like.

[0069] In some embodiments, the light blocker 262 can be formed to include a dull or matte finish. In some embodiments, a portion of the light blocker 262 can be formed to include a glossy finish. In some embodiments, all, or a portion, of the light blocker 262 can be coated in a second material to change one or more aspects of the reflectance of the light blocker 262. In some embodiments the second material can be the same material but in a different color. In some embodiments, the light blocker 262 can be designed so that a portion of the light blocker 262 is directed to preventing light from emanating toward the front of the display 206 and a portion of the light blocker 262 is configured to direct light in a selected direction to better distribute the light across the display 206.

[0070] As shown in the illustrated embodiment, an end 266 of the light blocker 262 is connected to the backlight holder 260 and an end 268 of the light blocker 262 abuts the backlight lens 258 of the display 206. In some embodiments, a portion 270 of the end 268 can be angled relative to a portion 272 of the light blocker 262 to provide pressure against the backlight lens 258 and reduce chances that light can escape between the backlight lens 258 and the light blocker 262.

[0071] In some embodiments, the light blocker 262 can be secured to the backlight holder 260 without use of an adhesive. For example, the light blocker 262 can be secured to the backlight holder 260 via a press fit or the like. In some embodiments, the light blocker 262 can be secured to the backlight holder 260 using an adhesive. In some embodiments.13ACTIVE 715544302v1Atorney Docket No. 203863-019201 / PCTResideo Ref. No. (R214522-WO) Electronically Filed: October 15. 2025 the light blocker 262 can be secured to the backlight holder 260 using a combination of adhesive and a press fit.

[0072] In some embodiments, the light blocker 262 can be disposed at a location adjacent to the LED 256. In some embodiments, the light blocker 262 can be designed to fit across the major extent of the backlight holder 260. In some embodiments, the light blocker 262 can be designed to fit across a portion of the major extent of the backlight holder 260. For example, the light blocker 262 can be designed to extend across up to 90% of the backlight holder 260, up to 75% of the backlight holder 260, up to 50% of the backlight holder 260, or up to 25% of the backlight holder 260.

[0073] FIG. 5 shows a perspective view of the light blocker 262 connected to the backlight holder 260, according to some embodiments.

[0074] In the illustrated embodiment, a surface 300 is shown. When the backlight holder 260 is installed in the housing 200, the surface 300 faces toward the printed circuit board 254 and the back housing 250. As illustrated, the light blocker 262 includes a plurality of apertures 302. A plurality of protrusions 304 from the surface 300 are inserted into the plurality of apertures 302 in the illustrated embodiment since the light blocker 262 is secured to the backlight holder 260. In some embodiments, the interaction between the plurality of apertures 302 and the plurality of protrusions 304 may not serve to secure the light blocker 262 to the backlight holder 260. Instead, the plurality' of apertures 302 and the plurality of protrusions 304 can serve as guide or alignment features so that the light blocker 262 can be installed in the correct location of the backlight holder 260. In some embodiments, each of the plurality of apertures 302 and the plurality of protrusions 304 can be sized differently from each other so that the light blocker 262 can only be installed in the correct orientation.

[0075] In the illustrated embodiment, the light blocker 262 is in the uninstalled configuration in which the light blocker 262 is not folded. The end 268 of the light blocker 262 can be configured to be folded when installed so that the end 268 is disposed on an opposite side of the backlight holder 260 and abuts the opposite side of the backlight holder 260.

[0076] In the illustrated embodiment, the backlight holder 260 has a first major dimension MD1. A dimension of the light blocker 262 that corresponds to the first major14ACTIVE 715544302v1Atorney Docket No. 203863-019201 / PCTResideo Ref. No. (R214522-WO) Electronically Filed: October 15. 2025 dimension is MD2. As illustrated, MD1 is larger than MD2. In some embodiments, the light blocker 262 can have a larger dimension than illustrated. That is, MD2 can be increased relative to the illustrated embodiment. In some embodiments, MD 1 can be similar to MD2. That is, the light blocker 262 can extend up to the same distance as the backlight holder 260. In some embodiments, MD2 can be up to 90% of MD1, up to 75% of MD1, up to 50% of MD1, or up to 25% of MD1.

[0077] FIG. 6 shows a front view of the light blocker 262, according to some embodiments. FIG. 7 shows a rear view (opposite the first side view) of the light blocker 262, according to some embodiments. FIG. 8 shows a side view of the light blocker 262, according to some embodiments. FIG. 6, FIG. 7, and FIG. 8 will be referenced collectively, unless specific reference is made otherwise.

[0078] In some embodiments, the light blocker 262 can be injection molded. In some embodiments, the light blocker 262 can be formed of a single piece, un it ary construction.

[0079] As illustrated, the light blocker 262 includes the end 266 and the end 268. In some embodiments, a dimension of the end 268 is MD2 and a dimension of the end 266 is MD3. In some embodiments, MD2 and MD3 can be the same or substantially the same. As used herein, “substantially the same’?includes subject to, for example, manufacturing tolerances or the like. In some embodiments, MD2 can be greater than MD3.

[0080] The light blocker 262 has a thickness Tl. In some embodiments, the thickness Tl can be selected to be up to 1 mm, up to 0.8 mm, up to 0.6 mm, up to 0.5 mm, up to 0.4 mm, or the like. In some embodiments, one or more locations of the light blocker 262 can be designed to have a second thickness T2. In some embodiments, the thickness T2 can be provided so that a hinge 350 and a hinge 352 are formed to simplify the installation of the light blocker 262. In some embodiments, the thickness T2 is less than the thickness Tl.

[0081] As is illustrated in FIG. 7, the light blocker 262 can include a locking element 354. In some embodiments, the locking element 354 can be inserted into an aperture of the backlight holder 260 and can include a plurality7of arms 356 that are configured to engage with the aperture and hold the light blocker 262 in the installed configuration. To accomplish this, the plurality of arms 356 can be designed to be resilient so that they generate a force to hold the light blocker 262 in the installed configuration.15ACTIVE 715544302v1Atorney Docket No. 203863-019201 / PCTResideo Ref. No. (R214522-WO) Electronically Filed: October 15. 2025

[0082] As visible in FIG. 6 and FIG. 7, the plurality of apertures 302 include an aperture 302A having a first diameter DI and a second aperture 302B having a second diameter D2. In some embodiments, the diameter DI and the diameter D2 are different. In some embodiments, the different diameters simplify proper alignment of the light blocker 262 when securing to the backlight holder 260.

[0083] The terminology used herein is intended to describe embodiments and is not intended to be limiting. The terms ‘’a,” “an,” and “the” include the plural forms as well, unless clearly indicated otherwise. The terms “comprises” and / or “comprising,” when used in this Specification, specify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, and / or components.

[0084] It is to be understood that changes may be made in detail, especially in matters of the construction materials employed and the shape, size, and arrangement of parts without departing from the scope of the present disclosure. This Specification and the embodiments described are examples, with the true scope and spirit of the disclosure being indicated by the claims that follow.16ACTIVE 715544302v1

Claims

Atorney Docket No. 203863-019201 / PCTResideo Ref. No. (R214522-WO) Electronically Filed: October 15. 2025CLAIMS1. A controller comprising: a housing; a backlight holder disposed within the housing; and a light blocker disposed within the housing, wherein the light blocker is configured to be secured to the backlight holder; wherein the light blocker is configured to block light from a backlight.

2. The controller of claim 1 , wherein the light blocker is secured to the backlight holder via a press fit connection.

3. The controller of claim 2, wherein the light blocker is secured to the backlight holder using an adhesive.

4. The controller of claim 1, wherein the light blocker is a single piece, unitary construction.

5. The controller of claim 1, wherein the light blocker has a thickness of up to 1 mm.

6. The controller of claim 1, wherein the light blocker comprises a plurality of hinges formed by reducing a thickness of the light blocker at a location of the plurality of hinges.

7. The controller of claim 1. wherein the light blocker is formed of an injection moldable material.

8. The controller of claim 7, wherein the injection moldable material is polypropylene.

9. The controller of claim 1, wherein the light blocker is opaque.

10. The controller of claim 1, wherein the light blocker is formed of a plurality of materials, wherein a first material is opaque, and a second material is reflective to control a reflection of light from the light blocker.17ACTIVE 715544302v1Atorney Docket No. 203863-019201 / PCTResideo Ref. No. (R214522-WO) Electronically Filed: October 15. 202511. The controller of claim 1 , wherein the backlight holder has a first rnaj or dimension, and the light blocker has a second major dimension.

12. The controller of claim 11, wherein the first major dimension is larger than the second major dimension.

13. The controller of claim 11, wherein the second major dimension is up to 90% of the first major dimension.

14. The controller of claim 11, wherein the controller is a thermostat for a heating, ventilation, and air conditioning system.

15. The controller of claim 1, wherein the backlight holder comprises a plurality of protrusions and the light blocker comprises a plurality of apertures; wherein the plurality of apertures is configured to receive the plurality of protrusions to align the backlight holder and the light blocker.

16. The controller of claim 1 , wherein the light blocker comprises a first end opposite a second end, wherein the second end is secured to the backlight holder, wherein the first end is configured to abut a backlight lens in an installed configuration.

17. The controller of claim 16, wherein the first end of the light blocker comprises an angled portion configured to be angled toward the backlight lens.

18. A device comprising: a housing; a printed circuit board having a first side and a second side opposite the first side; a light emitting diode (LED) disposed on the first side of the printed circuit board; a backlight holder disposed within the housing, the backlight holder disposed adjacent the second side of the printed circuit board; and a light blocker disposed within the housing, wherein the light blocker is configured to be secured to the backlight holder; wherein the light blocker is configured to block light from the backlight.18ACTIVE 715544302v1Atorney Docket No. 203863-019201 / PCTResideo Ref. No. (R214522-WO) Electronically Filed: October 15. 202519. The device of claim 18, wherein the light blocker is secured to the backlight holder via a press fit connection.

20. The device of claim 19, wherein the light blocker is secured to the backlight holder using an adhesive.

21. The device of claim 18, wherein the light blocker is a single piece, unitary construction.

22. The device of claim 18, wherein the light blocker has a thickness of up to 1 mm.

23. The device of claim 18, wherein the light blocker comprises a plurality of hinges formed by reducing a thickness of the light blocker at a location of the plurality of hinges.

24. The device of claim 18, wherein the light blocker is formed of an injection moldable material.

25. The device of claim 24, wherein the injection moldable material is polypropylene.

26. The device of claim 18, wherein the light blocker is opaque.

27. The device of claim 18, wherein the light blocker is formed of a plurality of materials, wherein a first material is opaque, and a second material is reflective to control a reflection of light from the light blocker.

28. The device of claim 18, wherein the backlight holder has a first major dimension, and the light blocker has a second major dimension.

29. The device of claim 28, wherein the first major dimension is larger than the second major dimension.19ACTIVE 715544302v1Attorney Docket No. 203863-019201 / PCTResideo Ref. No. (R214522-WO) Electronically Filed: October 15. 202530. The device of claim 28, wherein the second major dimension is up to 90% of the first major dimension.

31. The device of claim 28, wherein the device is a thermostat for a heating, ventilation, and air conditioning system.

32. The device of claim 18, wherein the backlight holder comprises a plurality of protrusions and the light blocker comprises a plurality of apertures; wherein the plurality of apertures is configured to receive the plurality7of protrusions to align the backlight holder and the light blocker.

33. The device of claim 18, wherein the light blocker comprises a first end opposite a second end, wherein the second end is secured to the backlight holder, wherein the first end is configured to abut a backlight lens in an installed configuration.

34. The device of claim 33, wherein the first end of the light blocker comprises an angled portion configured to be angled toward the backlight lens.20ACTIVE 715544302v1

Images