Notably, to prevent damaging the mobile device 102 if it were to be automatically expanded from an unsafe position, such as if the device has been placed near the edge of a table, or if the device is in use or moving, the configuration manager 116 is implemented to determine from one or more sensor inputs that the mobile device 102 is stationary before initiating to expand the mobile device from the compact form factor to the expanded form factor. In implementations, the mobile device 102 can include one or more proximity sensors that detect whether the device is stationary and/or in a safe position to be expanded, so that the device does not fall from where it is placed and/or is not damaged while expanding. In similar implementations, the configuration manager 116 determines both that the mobile device 102 is stationary and charging the battery 122 of the device (or a battery charger is connected) before initiating to expand the mobile device from the compact form factor to the expanded form factor.

In implementations, the configuration manager 116 can also detect an end of the battery charging, or the battery charger disconnected from the device, and initiate contracting the mobile device from the expanded form factor at 112 back to the compact form factor at 110 based on the end of the battery charging and previous expanding of the mobile device. An implementation of this aspect of the rollable screen device thermal mitigation is further shown and described with reference to FIG. 7.

FIG. 2 further illustrates example views 200 of the mobile device in aspects of rollable screen device thermal mitigation, as described herein. In these example views 200, the mobile device 102 is shown in a front view 202 in the partial form factor (e.g., also referred to as the “peek” form factor), with the rollable display screen 104 configured in the sensor display state. In this configuration, the rollable display screen 104 translates down (e.g., in an opposite direction of the extended display state). This sensor display state provides for an unobstructed sensory view of various device sensors 204 and/or components that are otherwise hidden behind the rollable display screen 104 in both the compact form factor (retracted display state) and expanded form factor (extended display state). For example, the device sensors 204, such as a front-facing camera, environment sensors (e.g., for motion, sound, lighting, etc.), a proximity sensor, and/or phone earpiece speaker can all be integrated in the mobile device 102 under the rollable display screen 104, and the slidable display mount 114 translates the display screen over or above the sensors. These under-the-display screen sensors are then exposed or visible for use in the sensor display state of the rollable display screen 104 that corresponds to the partial form factor of the mobile device 102. In these example views 200, the mobile device 102 is also shown in a back view 206 in the partial form factor of the device, with the rollable display screen 104 configured in the sensor display state. The rollable display screen 104 is translated by the slidable display mount 114 around the device housing, and forms the rear-facing portion of the display screen.

FIG. 3 further illustrates example views 300 of the mobile device in aspects of rollable screen device thermal mitigation, as described herein. In these example views 300, the mobile device 102 is shown in a front view 302, a side view 304, and a back view 306 in the compact form factor, with the rollable display screen 104 configured in the retracted display state. In this configuration, a portion of the rollable display screen 104 rotates around the housing of the mobile device 102, forming a rear-facing portion 308 of the display screen (e.g., relative to the front-facing portion 310 of the display screen). In implementations, both the front-facing portion 310 and the rear-facing portion 308 of the rollable display screen 104 can be used to display content, such as related content or content associated with different applications.

FIG. 4 further illustrates example views 400 of the mobile device in aspects of rollable screen device thermal mitigation, as described herein. In these example views 400, the mobile device 102 is shown in a front view 402, a side view 404, and a back view 406 in the expanded form factor, with the rollable display screen 104 configured in the extended display state. In this configuration, the rear-facing portion of the rollable display screen 104 rotates around the device housing and becomes part of the front-facing portion of the display screen. Notably, the viewable display area of the rollable display screen 104 varies as the display screen is translated from the sensor display state to the retracted display state to the extended display state, and back.

As illustrated in the figures, the slidable display mount 114 translates the rollable display screen 104 around the device housing to change the overall length of the flexible display as viewed from the front of the mobile device 102 (e.g., as shown in the front view 402). The slidable display mount 114 also translates the rollable display screen 104 in an opposite direction around the device housing to the retracted display state in the compact form factor of the device, and more of the rollable display screen 104 is viewable as the rear-facing portion of the display. Content, such as any type of graphics and images, can be displayed on any section of the rollable display screen 104, including on the front-facing portion, on the rear-facing portion, and/or on the curved end portion of the display screen.

FIG. 5 illustrates example views 500 of the rollable display screen and the slidable display mount of the mobile device in aspects of rollable screen device thermal mitigation, as described herein. In these example views 500, the rollable display screen 104 integrated with the slidable display mount 114 is shown configured at 502, along with a backplate 504. A display roller mechanism can be implemented to facilitate the flexible display and mounting assembly (e.g., the rollable display screen 104 and the slidable display mount 114) wrapping around the device housing. The display roller mechanism includes a rotor positioned within the curvilinear section 506 of the flexible display and mounting assembly to facilitate translation of the rollable display screen 104 in the various display states. In one or more implementations, the slidable display mount 114 includes a substrate that includes a flexible portion 508, which allows the flexible display and mounting assembly to wrap and deform around the device housing. As shown at 510, the rollable display screen 104 and the slidable display mount 114 are wrapped around to form the curvilinear section 506 of the flexible display, along with two linear sections of the display as the front-facing portion and the rear-facing portion of the rollable display screen. As shown in the example views 500, a cross section of the rollable display screen 104 and the slidable display mount 114 forms a J-shape or U-shape with the curvilinear section 506 of the display.

FIG. 6 further illustrates an example 600 of the mobile device in aspects of rollable screen device thermal mitigation, as described herein. In this example 600, the mobile device 102 is generally shown in a compact form factor at 602 and in an expanded form factor at 604. Notably the techniques described herein apply to any device that is configurable in at least two form factors, such as any type of extendable device or foldable device (e.g., a flip-phone), either of which can change form factors automatically, or manually by a user of the device. In this example 600, the mobile device 102 includes a heat source 606, such as the device battery 122 that typically generates heat within the device while charging. The mobile device 102 also includes at least one additional heat source 608, such as a charging and/or power manager integrated circuit. Although only two heat sources are shown and described in the mobile device 102 in this example 600, many electronic and/or computing devices include more than two components as heat sources that generate heat within a device.

In this example 600, both the heat source 606 and the additional heat source 608 generate heat within the mobile device. In aspects of the techniques described herein for rollable screen device thermal mitigation, an expansion of the device (e.g., from the compact form factor at 602 to the expanded form factor at 604) increases a distance between the heat sources. For example, a relative distance 610 between the heat source 606 and the additional heat source 608 (at 602) is increased to a relative distance 612 (at 604), which facilitates thermal mitigation of the heat that is generated by the components in the device. Further, the overall surface area of the mobile device 102 contributes to heat dissipation, and the expansion of the device increases the surface area and the dissipation of the heat. Not only does setting apart the internal device heat sources when the device is expanded provide for thermal mitigation, but increasing the surface area of the device by the device expansion also dissipates and/or transfers the generated heat for thermal mitigation.

Example methods 700, 800, 900, and 1000 are described with reference to respective FIGS. 7-10 in accordance with one or more implementations for rollable screen device thermal mitigation, as described herein. Generally, any services, components, modules, managers, methods, and/or operations described herein can be implemented using software, firmware, hardware (e.g., fixed logic circuitry), manual processing, or any combination thereof. Some operations of the example methods may be described in the general context of executable instructions stored on computer-readable storage memory that is local and/or remote to a computer processing system, and implementations can include software applications, programs, functions, and the like. Alternatively or in addition, any of the functionality described herein can be performed, at least in part, by one or more hardware logic components, such as, and without limitation, Field-programmable Gate Arrays (FPGAs), Application-specific Integrated Circuits (ASICs), Application-specific Standard Products (ASSPs), System-on-a-chip systems (SoCs), Complex Programmable Logic Devices (CPLDs), and the like.

FIG. 7 illustrates example method(s) 700 for rollable screen device thermal mitigation. The order in which the method is described is not intended to be construed as a limitation, and any number or combination of the described method operations can be performed in any order to perform a method, or an alternate method.

At 702, a battery charger connected to charge a battery of a mobile device is detected. For example, the configuration manager 116 detects a battery charger connected to charge the device battery 122 of the mobile device 102. At 704, a determination is made as to whether the device is configured in a compact form factor. For example, the configuration manager 116 determines the configuration of the mobile device 102 as being in one of the compact form factor or in the expanded form factor.

If the device is not configured in the compact form factor (i.e., “No” from 704), then the device is in the expanded form factor and at 706, a thermal mitigation, fast charge policy is applied. For example, the configuration manager 116 initiates the thermal mitigation, fast charge policy, which likely generates relatively more heat while the device battery 122 is charging, because the device can dissipate more heat for thermal mitigation in the expanded form factor. If the device is configured in the compact form factor (i.e., “Yes” from 704), then at 708, a determination is made as to whether the device is stationary. For example, the configuration manager 116 determines, such as based on one or more proximity sensors input, whether the mobile device 102 is stationary and/or in a safe position to be expanded before initiating to expand the mobile device from the compact form factor to the expanded form factor.

If the device is stationary (i.e., “Yes” from 708), then at 710, the device is expanded to the expanded form factor, and at 706, the thermal mitigation, fast charge policy is applied. If the device is not stationary (i.e., “No” from 708), then at 712, a thermal mitigation, slow charge policy is applied. A thermal mitigation technique to help cool the device is to reduce the charge current, which results in slower charging and a longer charging time, but generates relatively less heat within the device.

At 714, the battery of the mobile device starts charging based on either application of the thermal mitigation, fast charge policy (at 706) or the thermal mitigation, slow charge policy (at 712). At 716, the battery charger being disconnected from the mobile device is detected. At 718, a determination is made as to whether the device was previously expanded for charging. For example, the configuration manager 116 determines whether the mobile device 102 was expanded to the expanded form factor (e.g., at 710). If the mobile device was expanded for charging (i.e., “Yes” from 718), then at 720, the device is contracted back to the compact form factor.

FIG. 8 illustrates example method(s) 800 for rollable screen device thermal mitigation. The order in which the method is described is not intended to be construed as a limitation, and any number or combination of the described method operations can be performed in any order to perform a method, or an alternate method.

At 802, heat is generated within a mobile device from at least one heat source. For example, the mobile device 102 includes a heat source 126, such as the device battery 122 that typically generates heat within the device while charging. In one or more implementations, the mobile device may be a foldable mobile device (e.g., a flip phone), or an expandable mobile device with a rollable display screen configurable in one of multiple display states corresponding to respective device form factors. At 804, the heat that is generated is detected within the mobile device. For example, the configuration manager 116 detects the heat that is generated within the mobile device 102, such with device sensors.

At 806, a determination is made, from one or more sensor inputs, that the mobile device is stationary before expansion of the mobile device from a compact form factor to an expanded form factor. For example, the configuration manager 116 determines from one or more sensor inputs that the mobile device 102 is stationary before initiating to expand the mobile device from the compact form factor to the expanded form factor. In implementations, the mobile device 102 includes one or more proximity sensors that detect whether the device is stationary and/or in a safe position to be expanded, so that the device does not fall from where it is placed and/or is not damaged while expanding.

At 808, the mobile device is expanded from a compact form factor to an expanded form factor based on one of a thermal load, a device temperature, or a device component temperature. For example, the configuration manager 116 initiates operation of the slidable display mount 114 to expand the mobile device 102 from the compact form factor of the device to the expanded form factor of the device. An expansion of the device (e.g., from the compact form factor at 110 to the expanded form factor at 112) can be utilized to increase the relative distance between heat sources 126 in the device, which facilitates thermal mitigation of the heat that is generated by the components in the device. Further, the overall surface area of the mobile device 102 contributes to heat dissipation, and the expansion of the device increases the surface area and the dissipation of the heat. In implementations, the mobile device is expanded based on detection of the heat.

FIG. 9 illustrates example method(s) 900 for rollable screen device thermal mitigation. The order in which the method is described is not intended to be construed as a limitation, and any number or combination of the described method operations can be performed in any order to perform a method, or an alternate method.

At 902, charging a battery of a mobile device is detected. For example, the configuration manager 116 detects charging the battery 122 of the mobile device 102 (or a battery charger connected to the device), which can generate heat within the mobile device.

At 904, a determination is made that the mobile device is stationary and charging a battery of the mobile device before expansion of the mobile device from a compact form factor to an expanded form factor. For example, the configuration manager 116 determines from one or more sensor inputs that the mobile device 102 is stationary and charging the device battery 122 (or a battery charger is connected to the device) before initiating to expand the mobile device from the compact form factor to the expanded form factor. In implementations, the mobile device 102 includes one or more proximity sensors that detect whether the device is stationary and/or in a safe position to be expanded, so that the device does not fall from where it is placed and/or is not damaged while expanding.

At 906, the mobile device is expanded from a compact form factor to an expanded form factor based on one of a thermal load, a device temperature, or a device component temperature. For example, the configuration manager initiates to expand the mobile device 102 based on the detection of the battery charging (or the battery charger connected to the device). For example, the configuration manager 116 initiates operation of the slidable display mount 114 to expand the mobile device 102 from the compact form factor of the device to the expanded form factor of the device, which facilitates thermal mitigation of the heat that is generated by the battery charging in the device.

At 908, an end of the battery charging is detected, and at 910, the mobile device is contracted from the expanded form factor to the compact form factor based on the end of the charging the battery and previous expanding of the mobile device. For example, the configuration manager 116 also detects an end of the battery charging, or the battery charger disconnected from the device, and initiates contracting the mobile device from the expanded form factor at 112 back to the compact form factor at 110 based on the end of the battery charging and previous expanding of the mobile device.

FIG. 10 illustrates example method(s) 1000 for rollable screen device thermal mitigation. The order in which the method is described is not intended to be construed as a limitation, and any number or combination of the described method operations can be performed in any order to perform a method, or an alternate method.

At 1002, heat is generated within a mobile device by a heat source. For example, the mobile device 102 includes a heat source 606, such as the device battery 122 that typically generates heat within the device while charging. At 1004, the heat is detected by a sensor as one of a thermal load, a device temperature, or a device component temperature. For example, the heat that is being generated in the mobile device 102 is detected, such as by one or more sensors in the device, and the heat is detected as one of a thermal load, a device temperature, or a device component temperature in the device.

At 1006, the mobile device is configured, by a control unit, for increased heat dissipation based on detection of the heat. For example, a control unit, such as the configuration manager 116 in one or more implementations, configures the mobile device 102 for increased heat dissipation, such as by expanding the device to increase relative distances between heat generating components in the device and/or to increase the surface area of the device, which also facilitates heat dissipation and thermal mitigation.

FIG. 11 illustrates various components of an example device 1100, which can implement aspects of the techniques and features for rollable screen device thermal mitigation, as described herein. The example device 1100 can be implemented as any of the devices described with reference to the previous FIGS. 1-10, such as any type of a wireless device, mobile device, mobile phone, flip phone, client device, companion device, paired device, display device, tablet, computing, communication, entertainment, gaming, media playback, and/or any other type of computing and/or electronic device. For example, the mobile device 102 described with reference to FIGS. 1-10 may be implemented as the example device 1100.

The example device 1100 can include various, different communication devices 1102 that enable wired and/or wireless communication of device data 1104 with other devices. The device data 1104 can include any of the various devices data and content that is generated, processed, determined, received, stored, and/or communicated from one computing device to another. Generally, the device data 1104 can include any form of audio, video, image, graphics, and/or electronic data that is generated by applications executing on a device. The communication devices 1102 can also include transceivers for cellular phone communication and/or for any type of network data communication.

The example device 1100 can also include various, different types of data input/output (I/O) interfaces