Aerosol generator with display

Abstract

An aerosol-generating device for generating an aerosol from an aerosol-forming substrate includes an OLED display configured to display data indicative of an operational status of the aerosol-generating device. The device may include a controller configured to control the OLED display, which may also be a touch-sensitive OLED display that allows for use of the display for displaying data and for user input.

Description

[Technical field]

[0001] The present disclosure relates to an aerosol generating device in which data regarding the progression of an operational phase of the device is visually communicated to a user of the device. [Background technology]

[0002] Aerosol-generating devices configured to generate an aerosol from an aerosol-forming substrate, such as a tobacco-containing substrate, are known in the art. Typically, the inhalable aerosol is generated by heat transfer from a heat source to a physically separate aerosol-forming substrate or material, which may be located within, around, or downstream of the heat source. The aerosol-forming substrate may be a liquid substrate contained in a reservoir. The aerosol-forming substrate may also be a solid substrate. The aerosol-forming substrate may be part of a separate aerosol-generating article component configured to engage with the aerosol-generating device to form an aerosol. Volatile compounds are released from the aerosol-forming substrate by heat transfer from the heat source during consumption and are entrained in the air released through the aerosol-generating article. The released compounds condense upon cooling to form the aerosol that is inhaled by the consumer.

[0003] During use of an aerosol generating device, one or more parameters of the device may change. It is desirable to provide an aerosol generating device that can efficiently communicate data regarding the status of the device to a user. Summary of the Invention

[0004] According to one aspect of the invention, an aerosol generating device for generating an aerosol from an aerosol-forming substrate comprises an OLED display configured to display data indicative of an operational status of the aerosol generating device. The aerosol generating device may further comprise a controller configured to control the OLED display to display data relating to the operation of the aerosol generating device.

[0005] As aerosol generating devices become more sophisticated, more data regarding the operation of the device may become available, such as data regarding the operating state and operating status, data regarding progress in the operating state, and data regarding the safety of the device. Typically, the operating status of the aerosol generating device is communicated to the user by the use of one or two LEDs, which may light up in one or more colors and may flash. While such indications are possible, many users would prefer to be able to configure the device to operate in a manner appropriate to their usage behavior and to display data accordingly. The use of an OLED display may increase the resolution of data that may be presented to the user, such as, for example, data regarding the internal operating status of the device. The use of an OLED display, such as an OLED screen, may also result in a less bulky display compared to a conventional LED display configured to communicate data of similar resolution. This may help maintain a low weight device that can be comfortably carried in a user's pocket, for example. In general, the use of an OLED display may increase the functionality of the aerosol generating device.

[0006] The OLED display is preferably an OLED screen or comprises an OLED screen. The OLED screen may be a flexible screen, which may allow the screen to conform to or form part of a curved surface of the aerosol generating device. For example, the OLED display may be a curved OLED screen. The OLED screen is preferably substantially two-dimensional, but may be curved or shaped to conform to the surface of the aerosol generating device, for example, the OLED screen may be shaped to conform to a portion of the housing of the aerosol generating device.

[0007] The OLED display may have a concave surface on a first side and a convex surface on a second side opposite the first side. For example, the concave surface may face inward toward the longitudinal axis of the device and the convex surface may face outward away from the longitudinal axis. Such a display may advantageously conform to the cylindrical surface of an aerosol generating device.

[0008] The aerosol generating device preferably comprises a housing, for example a housing that positions the internal components of the device, such as the controller, heater, and power source. At least a portion of the housing may have a curved outer surface, for example at least a portion of the housing may be substantially cylindrical. The OLED display may be an OLED screen mounted on or within the curved portion of the housing, for example a substantially cylindrical portion of the housing. The device may comprise a housing with a particular outer contour, and the OLED display may be an OLED screen that conforms to a portion of the outer contour of the housing. By incorporating an OLED screen that conforms to the outer surface of the device, the screen may effectively be a portion of the housing of the device. This may allow for a screen with a larger area, for example, compared to the size of the device that would be allowed if a flat screen had to be incorporated. By including a conformal OLED screen as part of the outer surface of the device, a more ergonomic device may be provided.

[0009] The aerosol generating device is preferably a handheld aerosol generating device. Preferably, the OLED display is an OLED screen having a surface area defined by width and length dimensions, the OLED screen having a maximum width dimension of 5 mm to 25 mm and a maximum length dimension of 5 mm to 25 mm. For example, if the screen is curved to conform to or form a curved surface, the length and width dimensions may be the width and length dimensions that the screen has in a flat or uncurved state. The OLED display may have a surface area of ​​about 20 mm. 2 ~approx. 1600mm2 , for example 30mm 2 ~625mm 2 , for example 40mm 2 ~250mm 2 , or 50mm 2 ~125mm 2 The optical fiber may include an OLED screen having a surface area of

[0010] The OLED display may be an OLED screen having a substantially polygonal shape. For example, the OLED screen may have a shape selected from the list of shapes consisting of: square, rectangle, circle, ellipse, rectangular ellipse, circular ellipse, hexagon, pentagon, heptagon, and octagon. The OLED display may comprise a display surface or portion having a substantially polygonal shape, for example a shape selected from the list of shapes consisting of: square, rectangle, circle, ellipse, rectangular ellipse, circular ellipse, hexagon, pentagon, heptagon, and octagon. The display portion may be a zone or area of ​​the display screen configured to display certain data, for example an area of ​​the screen configured to display the progress of a usage session.

[0011] Advantageously, the OLED display may function as a user input. For example, the OLED display may be touch-sensitive or may include at least one touch-sensitive zone or portion to enable user input or interaction. The OLED display may be a user input element with capacitive touch sensitivity, for example, allowing a user to use a finger or a stylus to interact with the device, for example to operate the device, or to navigate a user menu, or to select an action option available on the device. By configuring the device such that the OLED display is also a user input, the need for a separate operating button may be eliminated. By eliminating the need for a separate operating button, more area may be available to provide a larger display screen, thereby improving functionality and user experience.

[0012] In a preferred embodiment, the device may be configured to detect a user interaction with the OLED display, e.g., a user's touch on the OLED display, and convert the user interaction into a user interaction signal. The device may be configured to use the user interaction signal to allow a user to control one or more aspects of the aerosol generating device. For example, the user interaction signal may be configured to control one or more operational aspects of the aerosol generating device. The user interaction signal may be configured to control the display of information, e.g., to allow a user to select one or more predefined modes for the display of information, e.g., one or more display modes.

[0013] The device may be configured to recognize and distinguish between two or more different user interactions with the OLED display, each of the two or more different user interactions being a different user input. For example, the two or more user interactions may be selected from a list consisting of a single tap, a double tap, a treble tap, a long touch, a left swipe, a right swipe, a swipe up, a swipe down, and a pattern of swipes.

[0014] The aerosol generating device preferably comprises a graphics display module configured to drive the OLED display. The graphics display module may be configured to receive instructions from the controller to drive the OLED display. The device may also include a memory configured to store one or more graphics files defining graphics to be displayed by the OLED display. The graphics files may, for example, define one or more logos or emblems to be displayed by the OLED display. The graphics files may define one or more sequences of images to be displayed by the OLED display to indicate a state or progression of operational events of the aerosol generating device. The graphics files may define one or more animations to be displayed by the OLED display to indicate a state or progression of operational events of the aerosol generating device. The memory may also include instructions for one or more modes of operating the aerosol generating device. For example, the memory may be programmed with instructions for the controller to enable operation and control of the aerosol generating device.

[0015] Preferably, the OLED display is an OLED screen configured to display high resolution, for example high resolution or ultra high resolution.

[0016] The aerosol generating device may be configured to monitor the progress of an event, e.g., an operational event. The device may include a controller configured to control an OLED display to display the progress of the operational event. For example, the device may be configured to monitor the progress of a use session while the aerosol is generated and display the progress of the use session. The controller may include, or be coupled to, a memory including instructions for monitoring the progress of the use session. Such a memory may include instructions for at least one display sequence for displaying the progress of the use session.

[0017] An event may have a duration defined by an event start and an event end. Thus, a use session may have a duration defined by a use session start and a use session end. The aerosol generating device may be configured to monitor parameters related to the progress of the event.

[0018] A parameter that is a monitored parameter may have an initial value at or at the start of an event and a final value that is different from the initial value. The monitored value of the parameter may be used to calculate the progression of the parameter between the initial and final values, and the progression of the parameter may be used to determine the progression of the event.

[0019] The parameter related to the progression of the event may be a first parameter. The aerosol generating device may be configured to monitor both the first parameter related to the progression of the event and a second parameter related to the progression of the event, the second parameter being a different parameter than the first parameter. The device may then be configured to determine the progression of the event with respect to both the first parameter and the second parameter.

[0020] The parameter, or one or both of the first and second parameters, is preferably a user interaction parameter indicative of use of the aerosol generating device during the event. The parameter, or one or both of the first and second parameters, is preferably a monitored parameter. The parameter, or one or both of the first and second parameters, may be a cumulative parameter, e.g., a cumulative value of the monitored parameter over the duration of the event.

[0021] Advantageously, the progression of the event may be determined by the progression of the parameter, or the progression of one or both of the first and second parameters, between its initial value and its final value. The progression of the event may be determined as a percentage.

[0022] The parameter, the first parameter, or the second parameter may be a parameter selected from the list consisting of time, number of user puffs, cumulative number of user puffs taken during the event, volume of aerosol delivered, cumulative volume of aerosol delivered during the event, energy consumed, cumulative volume of energy consumed during the event, current consumed, cumulative amount of current consumed during the event, temperature, temperature of the heating element, temperature of the susceptor, resistance of the heating element, and user interaction.

[0023] Preferably, the progress of the event is determined with reference to a first parameter and a second parameter, one of the first parameter and the second parameter being time and the other of the first parameter and the second parameter being selected from the list consisting of: number of puffs by the user, cumulative number of puffs by the user taken during the event, volume of aerosol delivered, cumulative volume of aerosol delivered during the event, energy consumed, cumulative volume of energy consumed during the event, current consumed, cumulative amount of current consumed during the event, temperature, temperature of the heating element, temperature of the susceptor, resistance of the heating element, and user interaction.

[0024] The OLED display may be controlled to display the progression of an event, e.g., the progress of a usage session, as a sequence of display states, e.g., a sequence of lighting states. The sequence of display states, or instructions for each sequence of display states, may be stored in a memory accessible by the controller. The progression may be displayed as an animated sequence, e.g., as one or more gradually increasing bars or lines shown on the display, or as one or more gradually decreasing bars or lines shown on the display. The device may be configured to display the progression as a sequence of any suitable number of display states, e.g., a sequence having 4 to 144 different display states. A smaller number of display states may provide a relatively rough indication of the progress of an event, while a larger number of display states may effectively provide a continuously changing sequence from 0% progress to 100% progress. The device may be configured to display the progression of an event as a sequence of 1 to n different display states, where n is a number equal to or greater than 4.

[0025] The number of display states is preferably 7 or more, or 10 or more. That is, the number n is preferably 7 or more, or 10 or more. For example, n may be 8, or 9, or 10, or 11, or 12. For example, the number n may be 7 to 144. The greater the number, the greater the resolution with which the progress of an event or usage session can be displayed. However, if the number of states is too large, meaningful distinction between adjacent states in a sequence may be more difficult to achieve. Displaying a greater number of display states may increase the complexity of the device.

[0026] The OLED display may be driven by the controller such that progression through the first to nth display states is accompanied by a corresponding increase in the intensity or brightness of the displayed light. Alternatively, the OLED display may be driven such that progression through the first to nth display states is accompanied by a corresponding decrease in the intensity or brightness of the displayed light.

[0027] The OLED display may be controlled to display the progression of events as one or more gradually increasing bars or lines that follow the outline of a shape, such as a circle or ellipse. For example, in the case of a circular shape, no bars or lines forming part of the circle may indicate 0% progression, a half circle may indicate 50% progression, and a full circle may indicate 100% progression. Similarly, the progression sequence may be indicated by increasing percentages of circle segments progressing from no indication, to one-eighth of a circle, to one-quarter of a circle, to three-quarters of a circle, to a full circle indicating 100% progression. Display in such a manner may provide a quick and intuitive way to judge progression.

[0028] The sequence of display states may be an increasing sequence, for example increasing the amount of illumination from zero to a full circle, or a full line or bar. The sequence of display states may also be a decreasing sequence. For example, an OLED display may be controlled to display the progression of an event as one or more gradually decreasing bars or lines tracing the outline of a shape such as a circle, where a full circle indicates 0% progress, a half circle indicates 50% progress, and no circle indicates 100% progress.

[0029] The OLED display may be controlled to display the progress of the event in any suitable manner. Advantageously, the device may be programmed such that the progress is displayed as multiple increasing or decreasing elements. For example, the progress may be displayed as a bar or line tracing the outline of two or more concentric circles. More than one increasing or decreasing element may allow a more detailed progress status to be communicated to the user.

[0030] The OLED display may be controlled to display an outer illumination zone that partially or completely surrounds the inner illumination zone, the OLED display comprising: i) selectively displaying one of the outer illumination zone and the inner illumination zone to generate a predetermined first display conveying first information; ii) controlled to selectively activate the other of the outer and inner illumination zones to generate a predetermined second display conveying second information.

[0031] The outer illumination zone may surround at least 50%, or preferably at least 60%, or preferably at least 70%, or preferably at least 80%, or preferably at least 90%, or preferably all of the perimeter of the inner illumination zone.

[0032] The first information may be related to the progression of an operating phase of the aerosol generating device and the second information may be related to the status of the aerosol generating device, the predetermined first display may be a predetermined sequence or animation and the predetermined second display may be a predetermined sequence, animation, symbol, logo or light emission.

[0033] The control electronics is preferably configured to simultaneously generate the first predetermined representation and the second predetermined representation.

[0034] To facilitate control of an event or to facilitate display of its progress, an event, e.g. a usage session, may be divided into n successive phases, where n is a number greater than 4, such as a number greater than 7, such as between 12 and 144 successive phases, or such as between 18 and 72 successive phases. Thus, the number of successive phases, e.g. n successive phases, may be equal to the number of successive display states provided by the OLED display, e.g. n display states.

[0035] The aerosol generating device may be configured such that any, or each, of the n consecutive phases has a phase duration defined by a phase start and a phase end.The aerosol generating device may be configured such that any, or each, of the n consecutive phases has a maximum phase duration determined by a timer.Any, or each, of the n consecutive phases may end when a monitored time period reaches a predefined threshold for the phase, unless the phase has ended earlier.

[0036] The exemplary aerosol generating device is configured such that a first phase of the n consecutive phases has a first phase duration defined by a first phase start and a first phase end, and the first phase starts at the start of an event, e.g., a use session. A second phase of the n consecutive phases may have a second phase duration defined by a second phase start and a second phase end, and the second phase starts at the end of the first phase. The n consecutive phases may be defined as a first phase and n-1 subsequent phases, each of which follows a preceding phase, each of which has a phase duration defined by a phase start and a phase end, and the phase starts at the end of the preceding phase. The event, e.g., a use session, preferably ends at the end of the nth phase.

[0037] The aerosol generating device may be configured to monitor a user interaction parameter indicative of use of the aerosol generating device during an event, e.g. a use session. Advantageously, the duration of any of the, or each of the, n successive phases may be controlled with respect to the user interaction parameter. The duration of any of the, or each of the, n successive phases may be controlled with reference to the user interaction parameter and at least one further parameter.

[0038] Preferably, an event, e.g. a usage session, has a maximum duration of between 60 seconds and 600 seconds, e.g. between 300 seconds and 400 seconds, e.g. about 360 seconds. Such a maximum duration may replicate the length of a typical smoking session using a conventional cigarette.

[0039] Advantageously, an event, e.g. a usage session, may have a maximum duration of x seconds, where x is a number between 100 and 600. For example, the event may be divided into n successive phases, where the maximum duration of each of the n successive phases is approximately x / n seconds.

[0040] An event, eg a usage session, may be controlled in terms of the number of puffs taken by the monitored user, a usage session having a threshold number of puffs taken by the user, eg between 10 and 14 puffs, such as about 12 puffs.

[0041] In some embodiments, the aerosol generating device may be configured to monitor a parameter indicative of aerosol generation during operation of the aerosol generating device, analyze the monitored parameters to identify a user puff, where the user puff is defined by a puff start and a puff end, analyze the monitored parameters during the user puff to calculate a puff volume, where the puff volume is the volume of aerosol generated during the user puff, and use the puff volume as a parameter relating to the progress of an event, e.g. the progress of a usage session. The parameter indicative of aerosol generation may represent the power supplied by the power source, e.g. the current, or both the current and the voltage. Advantageously, the puff volume may be used as a parameter for indicating the progress of a usage session. In particular, a usage session may have a threshold of aerosol that can be delivered, and the cumulative volume of aerosol generated may be used as a parameter for indicating the progress of a usage session.

[0042] Measurement of the actual volume of aerosol generated can be complicated to implement. Thus, a function of the monitored parameters can be calculated and evaluated in real time to determine the puff volume. The analysis of the monitored parameters may include calculating a first characteristic of the monitored parameters and analyzing the first characteristic to determine the start of the puff and the cessation of the puff. The analysis of the monitored parameters may include calculating a second characteristic of the monitored parameters and analyzing both the first characteristic and the second characteristic to determine the start of the puff and the cessation of the puff. The start of the puff can be determined if the first characteristic and the second characteristic satisfy one or more predetermined conditions. Similarly, the end of the puff can be determined if the first characteristic and the second characteristic satisfy one or more predetermined conditions. Preferably, the first characteristic may be a first moving average value of the monitored parameters calculated over a first time window having a duration of the first time window. The second characteristic may be a second moving average value of the monitored parameter calculated over a second time window having a duration of a second time window, the duration of the second time window being different from the duration of the first time window.

[0043] In some embodiments, the event may be a first event, and the device is further configured to monitor a progress relating to a second event and display information such as the progress thereof, the second event being different from the first event. For example, the aerosol generating device may be configured to display the progress of the first event, and the state of the second event, or the progress of the second event, during use of the aerosol generating device. The aerosol generating device may comprise an OLED display configured to display the progress of the first event as a first sequence of 1-n distinct display states, and the state and / or progress of the second event as a second sequence of n distinct display states, the number being 7 or greater. The device may also comprise a controller configured to monitor the progress of the first event and control the visual indicator to display a display state representative of the progress of the first event, and monitor the second event and control the visual indicator to display a display state representative of the state and / or progress of the second event. Although the term "controller" is used, this term is intended to encompass more than one controller when more than one separate controller is used to control the operation of the aerosol generating device.

[0044] The progression of the second event is preferably displayed as a second sequence of 1st through nth different display states, the second sequence of display states being different from the first sequence of display states. By varying the sequence of display states, a user can easily determine what type of event the device is experiencing and how much progress has been made through the event.

[0045] The first event may be an event type selected from the list consisting of a usage session, a heating period, e.g., a pre-heating period, a calibration period, a charging period, and a pause period, and the second event may be an event type selected from the list consisting of a usage session, a heating period, e.g., a pre-heating period, a calibration period, a charging period, and a pause period, and the event type of the second event is different from the event type of the first event.

[0046] The controller may be configured to determine a start of a first event, determine an event type for the first event, monitor a progress of the first event, and control the OLED display to display a sequence of predefined display states representative of the progress of the first event. The controller may also be configured to determine a start of a second event, determine an event type for the second event, monitor a state and / or progress of the second event, and control the OLED display to display a sequence of predefined display states representative of the state and / or progress of the second event.

[0047] The second event may occur after the end of the first event. For example, the first event may be a pre-heat period and the second event may be a usage session that occurs after completion or termination of the pre-heat period. For example, the first event may be a calibration period and the second event may be a usage session that occurs after completion or termination of the calibration period.

[0048] The second event may occur during a pause in the first event. For example, the first event may be a usage session and the second event may be a pause period that occurs during a pause in the usage session. For example, the first event may be a usage session and the second event may be a recalibration period that occurs during a pause in the usage session.

[0049] The device may be further configured to monitor and display progress with respect to a third event, the third event being different from the first and second events. In such a case, the third event may be an event type selected from the list consisting of a usage session, a heating period, e.g., a pre-heat period, a calibration period, a charging period, and a pause period. As an example, the first event may be a pre-heat event, the second event may be a usage session, and the third event may be a pause event.

[0050] The aerosol generating device may be configured to allow a user to pause an event, for example a first event, during its progress and enter a pause period. Accordingly, the device may comprise a memory configured to store the progress of the event such that display of the progress can be resumed upon restart of the event.

[0051] Where the device is configured to display information relating to the progress of two or more different types of events, the device may be configured such that different portions of the OLED display are used to present data relating to the different types of events.

[0052] The aerosol generating device may further comprise a user interaction interface, e.g., an interface selected from the list consisting of a button, a touch-sensitive button, a strain-sensitive button, a gesture recognition interface, a haptic interface, and an accelerometer. The aerosol generating device may comprise a power source for providing energy to generate the aerosol from the aerosol-forming substrate, e.g., a power source such as a battery.

[0053] The aerosol-generating devices described herein may comprise a heater, e.g. a resistive heater or an inductive heater, for heating the aerosol-forming substrate. The device may be configured to operate with a solid aerosol-forming substrate. The device may be configured to operate with a liquid aerosol-forming substrate.

[0054] Advantageously, the aerosol generating device may be equipped with a sensor, for example a sensor for detecting a parameter indicative of the progression of an event, for example a sensor for detecting a user interaction parameter.

[0055] The aerosol-generating device may include a heater for heating the aerosol-forming substrate to form the aerosol. The heater may be an induction heater. The induction heater may include an inductor configured to generate a varying magnetic field designed to heat the susceptor. The heater may be a resistive heater.

[0056] The heater may comprise a heating element for heating the consumable aerosol-generating article. The heating element may be an internal heater designed to be inserted into the consumable aerosol-generating article, for example a resistive heating element or a susceptor in the form of a pin or blade that can be inserted into an aerosol-forming substrate located within the consumable aerosol-generating article. The heating element may be an external heater designed to heat an external surface of the consumable aerosol-generating article, for example a resistive heating element or a susceptor located around or surrounding a cavity that receives a substrate for receiving the consumable aerosol-generating article.

[0057] The aerosol generating device may comprise an exchangeable substrate section housing the aerosol-forming substrate. The exchangeable substrate section may form part of the body of the aerosol generating device and may itself position or house a portion of the aerosol-forming substrate within the device for consumption. The exchangeable substrate section may be located distal to the proximal end of the device, e.g. distal to the mouthpiece. The exchangeable substrate section may be located proximal to the distal end of the device. The exchangeable substrate section may be connected to one or more other sections forming the body of the aerosol generating device by connecting means such as a screw thread, or a bayonet joint, or a magnetic connection, or a mechanical latching means such as a snap or interference fit.

[0058] The replaceable substrate section may comprise a reservoir of liquid aerosol-forming substrate. For example, the replaceable substrate section may comprise a liquid reservoir containing an aerosol former such as nicotine and propylene glycol or glycerin. Alternatively, the replaceable substrate section may comprise a container of solid aerosol-forming substrate, or a container of colloidal aerosol-forming substrate such as a gel substrate.

[0059] The aerosol generating device may comprise interchangeable substrate sections that house two or more components that, when combined, form the aerosol.

[0060] The replaceable substrate section may comprise an atomizer, such as a heating element, for heating the aerosol-forming substrate or for heating at least one of two or more components that when combined form the aerosol. Thus, the replaceable substrate section may be in the form of a cartomizer and may include both the aerosol-forming substrate and the atomization component. In such an embodiment, the replaceable substrate section will preferably include electrical contacts configured to contact corresponding electrical contacts on the battery portion of the aerosol generating device to provide power for operation of the atomizer.

[0061] In one embodiment, the atomizer may be a resistive heater, such as a resistive wire or a resistive track on a substrate, hi another embodiment, the atomizer may be an inductive susceptor that can be heated when in a varying magnetic field generated by an induction coil.

[0062] The aerosol generating device may be configured such that power is provided to the heater to maintain the heater at a predetermined temperature during a use session.

[0063] Power may be provided to the heater to raise the temperature of the heater element to an operating temperature range for generating an aerosol, and the heater element remains within the operating temperature range until the end of the use session. During the use session, power may be provided to the heater both when the user is taking a puff and when the user is not taking a puff. In such a configuration, the power provided while the user is taking a puff may be greater than the power provided when the user is not taking a puff, since less power will be required to maintain the temperature of the heater between puffs.

[0064] The aerosol-generating device may be configured to receive an aerosol-generating article comprising an aerosol-forming substrate. The aerosol-forming substrate may be a solid aerosol-forming substrate. For example, the aerosol-generating device may comprise a substrate-receiving cavity for receiving a consumable aerosol-generating article comprising an aerosol-forming substrate. Examples of aerosol-generating articles include sachets filled with solid aerosol-forming substrates, cigarettes, and cigarette-like articles comprising an aerosol-forming substrate contained within a wrapper, capsule, or container, such as cigarette paper, of a liquid aerosol-forming substrate or a colloidal aerosol-forming substrate. A consumable aerosol-generating article may comprise interchangeable substrate sections containing two or more components that form an aerosol when combined.

[0065] The consumable aerosol-generating article may comprise an atomizer, such as a heating element, for heating an aerosol-forming substrate or for heating at least one of two or more components that, when combined, form an aerosol. Thus, the consumable aerosol-generating article may be in the form of a cartomizer and may comprise both an aerosol-forming substrate and an atomizing component. In such embodiments, the consumable aerosol-generating article will preferably include electrical contacts configured to contact corresponding electrical contacts on a battery portion of the aerosol generating device to provide power for operation of the atomizer.

[0066] In an embodiment, the atomizer may be a resistive heater, such as a resistive wire or a resistive track on a substrate. In other embodiments, the atomizer may be an inductive susceptor that can be heated when in a varying magnetic field generated by an induction coil.

[0067] A preferred consumable aerosol-generating article may be in the form of a cigarette or cigarette-like article comprising a solid aerosol-forming substrate contained within a wrapper. Such an article preferably comprises a mouth end intended to be inserted into the mouth of a user for consumption of the article. The mouth end preferably comprises a filter that mimics a conventional conditioned cigarette. The consumable aerosol-generating article is preferably configured to interact with an atomizer, preferably a heater, located within the body of the aerosol-generating device. Thus, a heating means such as a resistive heating element may be located in or around a substrate-receiving cavity for receiving the consumable aerosol-generating article. The substrate-receiving cavity may be located at the proximal end of the device. For example, an opening to the substrate-receiving cavity may be located at the proximal end of the device.

[0068] Preferably, the aerosol-forming substrate of the aerosol-generating article is a solid aerosol-forming substrate. However, the aerosol-forming substrate may comprise both solid and liquid components. Alternatively, the aerosol-forming substrate may be a liquid aerosol-forming substrate.

[0069] Preferably the aerosol-forming substrate comprises nicotine. More preferably the aerosol-forming substrate comprises tobacco. Alternatively, or additionally, the aerosol-forming substrate may comprise a non-tobacco-containing aerosol-forming material.

[0070] Where the aerosol-forming substrate is a solid aerosol-forming substrate, the solid aerosol-forming substrate may comprise, for example, one or more of powders, granules, pellets, shreds, threads, strips, or sheets containing one or more of herb leaves, tobacco leaves, tobacco stems, expanded tobacco, and homogenized tobacco.

[0071] Optionally, the solid aerosol-forming substrate may contain tobacco or non-tobacco volatile flavour compounds, which are released upon heating of the solid aerosol-forming substrate. The solid aerosol-forming substrate may also contain one or more capsules, e.g., containing additional tobacco or non-tobacco volatile flavour compounds, which may melt during heating of the solid aerosol-forming substrate.

[0072] Optionally, the solid aerosol-forming substrate may be provided on or embedded in a thermally stable carrier. The carrier may take the form of a powder, granules, pellets, pieces, threads, strips, or sheets. The solid aerosol-forming substrate may be deposited on the surface of the carrier, for example in the form of a sheet, foam, gel, or slurry. The solid aerosol-forming substrate may be deposited on the entire surface of the carrier, or alternatively, in a pattern to provide a non-uniform flavor delivery during use.

[0073] In one preferred embodiment, the aerosol-forming substrate comprises a homogenized tobacco material. As used herein, the term "homogenized tobacco material" refers to a material formed by agglomerating particulate tobacco.

[0074] The aerosol-forming substrate preferably comprises an assembly of a sheet of homogenized tobacco material. As used herein, the term "sheet" refers to a layered element having a width and length substantially greater than its thickness. As used herein, the term "assembled" is used to describe a sheet that is rolled, folded, or otherwise compressed or clamped substantially transversely to the longitudinal axis of the aerosol-generating article.

[0075] The aerosol-forming substrate preferably comprises an aerosol former. As used herein, the term "aerosol former" is used to describe any suitable known compound or mixture of compounds that facilitates the formation of an aerosol during use and that is generally resistant to thermal decomposition at the operating temperatures of the aerosol-generating article.

[0076] Suitable aerosol formers are known in the art and include, but are not limited to, polyhydric alcohols (such as propylene glycol, triethylene glycol, 1,3-butanediol, glycerin, etc.), esters of polyhydric alcohols (such as glycerol monoacetate, diacetate, triacetate, etc.), and aliphatic esters of mono-, di-, or polycarboxylic acids (such as dimethyl dodecanedioate, dimethyl tetradecanedioate, etc.). Preferred aerosol formers are polyhydric alcohols (e.g., propylene glycol, triethylene glycol, 1,3-butanediol, and most preferably, glycerin) or mixtures thereof.

[0077] The aerosol-forming substrate may comprise a single aerosol former, alternatively, the aerosol-forming substrate may comprise a combination of two or more aerosol formers.

[0078] The aerosol generating system may comprise an aerosol generating device as described above and an aerosol-generating article configured to be received by the aerosol generating device, the aerosol-generating article comprising an aerosol-forming substrate.

[0079] The aerosol generating system may further comprise a charging device for charging the aerosol generating device. The charging device may include a primary power source and may have a docking arrangement configured to engage the aerosol generating device.

[0080] As used herein, the term "aerosol-generating device" is used to describe a device that interacts with an aerosol-forming substrate of an aerosol-generating article to generate an aerosol. The aerosol-generating device is preferably a smoking device that interacts with an aerosol-forming substrate of an aerosol-generating article to generate an aerosol that is inhalable directly through the user's mouth into the user's lungs. The aerosol-generating device may be a holder for an aerosol-generating article. The aerosol-generating article is preferably a smoking article that generates an aerosol that is inhalable directly through the user's mouth into the user's lungs. More preferably, the aerosol-generating article is an article that generates a nicotine-containing aerosol that is inhalable directly through the user's mouth into the user's lungs. The aerosol-generating article may be an article that generates a nicotine-free aerosol that is inhalable directly through the user's mouth into the user's lungs.

[0081] As used herein, the term "aerosol-generating article" refers to an article comprising an aerosol-forming substrate capable of releasing a volatile compound capable of forming an aerosol. In certain embodiments, an aerosol-generating article may comprise an aerosol-forming substrate capable of releasing, upon heating, a volatile compound capable of forming an aerosol.

[0082] The term "aerosol-forming substrate" as used herein refers to a substrate that is composed of or includes an aerosol-forming material that is capable of releasing a volatile compound upon heating to generate an aerosol. The aerosol may include nicotine. The aerosol may be a nicotine-free aerosol that includes one or more inhalable substances but does not include nicotine.

[0083] As used herein, the term "usage session" refers to a period of operation of an aerosol generating device having a finite duration. A usage session may be initiated by a user action. A usage session may terminate after a predetermined period of time has elapsed from the initiation of the usage session. A usage session may terminate after a monitored parameter reaches a threshold during the usage session. Typically, a usage session has a duration that allows a user to enjoy a single user experience. For example, in a particular aerosol generating device, a usage session may have a duration that allows a user to consume a single disposable aerosol generating article. After a usage session is terminated, a further action by the user is required to initiate a subsequent usage session.

[0084] As used herein, the term "OLED display" refers to an element that emits a visual display using one or more organic light emitting diodes (OLEDs), such as an OLED screen. EXAMPLES

[0085] The present invention is defined in the claims. However, below is provided a non-exhaustive list of non-limiting examples. Any one or more of the features of these examples may be combined with any one or more of the features of other examples, embodiments, or aspects described herein.

[0086] Example 1 1. An aerosol generating device for generating an aerosol from an aerosol-forming substrate, the aerosol generating device comprising an OLED display configured to display data indicative of an operational status of the aerosol generating device. Example 2 2. The aerosol generating device of example 1, further comprising a controller configured to control the OLED display to display data regarding operation of the aerosol generating device. Example 3 3. The aerosol generating device according to any one of Examples 1 to 2, wherein the OLED display is an OLED screen. Example 4 An aerosol generating device according to any one of Examples 1 to 3, wherein the OLED display is a flexible and / or curved OLED screen. Example 4a 5. An aerosol generating device according to any one of Examples 1 to 4, wherein the OLED display has a concave surface on a first side and a convex surface on a second side opposite the first side. Example 4b An aerosol generating device as described in Example 4a, wherein the concave surface faces inward toward the longitudinal axis of the device and the convex surface faces outward, away from the longitudinal axis. Example 5 An aerosol generating device as described in any of Examples 1 to 4b, wherein the device comprises a housing, at least a portion of the housing has a curved surface, for example at least a portion of the housing is substantially cylindrical, and the OLED display is an OLED screen mounted on or within a portion of the housing. Example 6 An aerosol generating device as described in any one of Examples 1 to 5, wherein the device comprises a housing having an outer contour, and the OLED display is an OLED screen that conforms to a portion of the outer contour of the housing. Example 7 An aerosol generating device as described in any one of Examples 1 to 6, wherein the OLED display is an OLED screen having a surface area defined by width and length dimensions, and the OLED screen has a maximum width dimension of 5 mm to 25 mm and a maximum length dimension of 5 mm to 25 mm. Example 8. The OLED display is approximately 20 mm 2 ~Approx. 625mm 2 8. The aerosol generating device according to any one of Examples 1 to 7, wherein the aerosol generating device is an OLED screen having a surface area of Example 9 An aerosol generating device as described in any one of Examples 1 to 8, wherein the OLED display is an OLED screen having a substantially polygonal shape, for example a shape selected from the list of shapes consisting of a square, a rectangle, a circle, an ellipse, a rectangular ellipse, a circular ellipse, a hexagon, a pentagon, a heptagon, and an octagon. Example 9a An aerosol generating device as described in any one of Examples 1 to 9, wherein the OLED display has a display surface that is substantially polygonal in shape, for example a shape selected from the list of shapes consisting of square, rectangular, circular, elliptical, rectangular elliptical, circular elliptical, hexagonal, pentagonal, heptagonal, and octagonal. Example 10 An aerosol generating device according to any one of the preceding embodiments, wherein the OLED display is a user input, for example the OLED display is touch sensitive to allow for user input. Example 11 11. The aerosol generating device of example 10, wherein the OLED is a user input element having capacitive touch sensitivity. Example 12 An aerosol generating device described in any of Examples 1 to 11, wherein the device is configured to detect user interaction with the OLED display, for example a user touch on the OLED display, and convert the user interaction into a user interaction signal, and wherein the device is further configured to control one or more aspects of the aerosol generating device using the user interaction signal. Example 13 An aerosol generation device as described in Example 12, wherein the user interaction signal is configured to control one or more operational aspects of the aerosol generation device. Example 14 An aerosol generating device as described in Example 12 or 13, wherein the user interaction signal is configured to control the display of information, for example to enable a user to select one or more predetermined modes for displaying the information. Example 15 An aerosol generating device described in any of Examples 10 to 14, wherein the device is configured to recognize and distinguish two or more different user interactions with the OLED display, each of the two or more different user interactions being a different user input. Example 16 An aerosol generating device as described in Example 15, wherein the two or more user interactions are selected from the list consisting of a single tap, a double tap, a treble tap, a long touch, a left swipe, a right swipe, a swipe up, a swipe down, and a patterned swipe. Example 17 An aerosol generating device as described in any one of Examples 1 to 16, wherein the device comprises a graphics display module configured to drive an OLED display. Example 18 An aerosol generating device described in any of Examples 1 to 17, wherein the device includes a memory configured to store one or more graphic files defining graphics to be displayed by the OLED display. Example 19 An aerosol generating device as described in Example 18, wherein the graphics file defines one or more logos or emblems to be displayed by the OLED display. Example 20 An aerosol generating device as described in Example 18 or 19, wherein the graphics file defines one or more sequences of images to be displayed by the OLED display to indicate the status or progression of operational events of the aerosol generating device. Example 21 An aerosol generating device described in any of Examples 18 to 20, wherein the graphics file defines one or more animations displayed by the OLED display to indicate the status or progression of operational events of the aerosol generating device. Example 22 An aerosol generating device as described in any one of Examples 1 to 21, wherein the OLED display is an OLED screen configured to display in high resolution, e.g., high resolution or ultra-high resolution. Example 23 An aerosol generating device described in any of Examples 1 to 22, wherein the device is configured to monitor the progress of operational events, and the device comprises a controller configured to control an OLED display to display the progress of operational events. Example 24 An aerosol generation device as described in Example 23, wherein the device is configured to monitor the progress of a use session while the aerosol is generated and to display the progress of the use session. Example 25 An aerosol generating device as described in Example 24, wherein a usage session has a duration defined by a usage session start and a usage session end. Example 26 26. An aerosol generating apparatus according to any one of Examples 23 to 25, wherein the aerosol generating apparatus is configured to monitor a parameter associated with the progression of the event. Example 27 27. An aerosol generating device as described in Example 26, wherein the parameter has an initial value at or at the start of the event and a final value different from the initial value. Example 28 28. The aerosol generating device of Example 27, wherein the monitored values ​​of the parameter are used to calculate the progression of the parameter between an initial value and a final value, and the progression of the parameter is used to determine the progression of the event. Example 29 29. The aerosol generating apparatus according to any one of Examples 26 to 28, wherein the parameter related to the progress of the event is the first parameter. Example 30 An aerosol generating device as described in Example 29, wherein the aerosol generating device is configured to monitor both a first parameter related to the progression of an event and a second parameter related to the progression of an event, the second parameter being a parameter different from the first parameter. Example 31 An aerosol generating device as described in Example 30, wherein the device is configured to determine the progress of an event with respect to both the first parameter and the second parameter. Example 32 An aerosol generating apparatus according to any one of Examples 23 to 31, wherein the event has an event start and an event end, and an event duration defined by the event start and the event end. Example 33 An aerosol generating device described in any of Examples 26 to 32, wherein the parameter, or one or both of the first parameter and the second parameter, are user interaction parameters indicative of use of the aerosol generating device during the event. Example 34 34. The aerosol generating apparatus according to any of Examples 26 to 33, wherein the parameter, or one or both of the first parameter and the second parameter, are monitored parameters. Example 35 An aerosol generating device described in any of Examples 26 to 34, wherein the parameter, or one or both of the first parameter and the second parameter, is a cumulative parameter, for example, a cumulative value of the monitored parameter over the duration of the event. Example 36 An aerosol generating apparatus as described in any of Examples 26 to 35, wherein the progression of an event is determined by the progression of a parameter, or the progression of one or both of the first parameter and the second parameter between its initial value and its final value. Example 37 37. The aerosol generating device of Example 36, wherein the progression of an event is determined as a percentage. Example 38 38. The aerosol generating apparatus according to any one of Examples 26 to 37, wherein the parameter, the first parameter, or the second parameter is time. Example 39 An aerosol generating device as described in any of Examples 26 to 38, wherein the parameter, the first parameter, or the second parameter is selected from the list consisting of time, number of user puffs, cumulative number of user puffs taken during the event, volume of aerosol delivered, cumulative volume of aerosol delivered during the event, cumulative volume of energy consumed during the event, current consumed, cumulative volume of current consumed during the event, temperature, temperature of the heating element, temperature of the susceptor, resistance of the heating element, and user interaction. Example 40 An aerosol generating device as described in any of Examples 26 to 39, wherein the progress of the event is determined by reference to a first parameter and a second parameter, one of the first parameter and the second parameter being time and the other of the first parameter and the second parameter being selected from the list consisting of the number of user puffs, the cumulative number of user puffs taken during the event, the volume of aerosol delivered, the cumulative volume of aerosol delivered during the event, the cumulative volume of energy consumed during the event, the current consumed, the cumulative amount of current consumed during the event, temperature, the temperature of the heating element, the temperature of the susceptor, the resistance of the heating element, and user interaction. Example 41 An aerosol generating device described in any one of Examples 1 to 40, wherein the OLED display is controlled to display the progression of an event, such as a usage session, as a sequence of lighting states. Example 42 An aerosol generating device as described in any of Examples 1 to 41, wherein the OLED display is controlled to display the progression of an event, such as a usage session, in an animated sequence. Example 43 An aerosol generating device described in any of Examples 24 to 42, wherein the OLED display is controlled to display the progression of events as one or more gradually increasing bars or lines. Example 44 An aerosol generating device described in any of Examples 24 to 43, wherein the OLED display is controlled to display the progression of an event as one or more gradually decreasing bars or lines. Example 45 An aerosol generating device described in any of Examples 24 to 44, wherein the OLED display is controlled to display the progress of the event as one or more gradually increasing bars or lines following the outline of a circle, for example where no circle indicates 0% progress, a half circle indicates 50% progress, and a full circle indicates 100% progress. Example 46 An aerosol generating device described in any of Examples 24 to 45, wherein the OLED display is controlled to display the progress of the event as one or more gradually decreasing bars or lines following the outline of a circle, for example where no circle indicates 100% progress, a half circle indicates 50% progress, and a full circle indicates 0% progress. Example 47 The OLED display, An aerosol generating device according to any of Examples 24 to 46, which is controlled to display the progression of events as a bar or line following the outline of concentric circles. Example 48 The OLED display is controlled to display an outer lighting zone that partially or completely surrounds the inner lighting zone; The OLED display, i) selectively displaying one of the outer illumination zone and the inner illumination zone to generate a predetermined first display conveying first information; ii) An aerosol generating device described in any of Examples 1 to 47, which is controlled to selectively activate the other of the outer lighting zone and the inner lighting zone to generate a predetermined second display conveying second information. Example 49 An aerosol generating device as described in Example 48, wherein the outer illumination zone surrounds at least 50%, or preferably at least 60%, or preferably at least 70%, or preferably at least 80%, or preferably at least 90%, or preferably all of the perimeter of the inner illumination zone. Example 50 An aerosol generating device as described in Example 48 or 49, wherein the first information relates to the progression of an operating phase of the aerosol generating device, the second information relates to the status of the aerosol generating device, the predetermined first display is a predetermined sequence or animation, and the predetermined second display is a predetermined symbol, logo, or light emission. Example 51 An aerosol generating device as described in Example 50, wherein the control electronics is configured to simultaneously generate a predetermined first indication and a predetermined second indication.

[0087] The embodiments will now be further described with reference to the following figures: [Brief description of the drawings]

[0088] [Figure 1] FIG. 1 shows a schematic side view of an aerosol generating device. [Diagram 2] FIG. 2 shows a schematic top view of the aerosol generating device of FIG. [Diagram 3] FIG. 3 shows a schematic cross-sectional side view of the aerosol generating device of FIG. 1 and an aerosol-generating article for use in the device. [Figure 4] FIG. 4 is a block diagram providing a schematic view of the various electronic components of the aerosol generating device of FIGS. 1-3 and their interactions. [Diagram 5] 5a-5h provide schematic diagrams illustrating the operation of the OLED screen provided on the aerosol generating device of FIGS. 1-4, particularly as a use session progresses. [Figure 6] 6a-6d provide schematic diagrams illustrating further examples of the operation of an OLED screen provided on the aerosol generating device of FIGS. 1-4 as it progresses through a usage session. [Figure 7] 7, 8, and 9 show flow diagrams illustrating the method steps involved in determining and displaying to a user the progress of a usage session, where progress is determined by time and puff counts. [Figure 8] Same as above. [Figure 9] Same as above. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0089] 1-3, the exemplary aerosol generating device 10 is a handheld aerosol generating device and has an elongated shape defined by a substantially circular, cylindrical housing 20. The aerosol generating device 10 comprises an open cavity 25 located at a proximal end 21 of the housing 20 for receiving an aerosol-generating article 30 comprising an aerosol-forming substrate 31. The aerosol generating device 10 further comprises a battery (not shown) located within the device housing 20, and an electrically operated heater 40 arranged to heat at least the aerosol-forming substrate portion 31 of the aerosol-generating article 30 when the aerosol-generating article 30 is received within the cavity 25.

[0090] The aerosol-generating device is configured to receive a consumable aerosol-generating article 30. The aerosol-generating article 30 is in the form of a cylindrical rod and comprises an aerosol-forming substrate 31. The aerosol-forming substrate is a solid aerosol-forming substrate comprising tobacco. The aerosol-generating article 30 further comprises a mouthpiece, such as a filter 32, disposed in coaxial alignment with the aerosol-forming substrate within the cylindrical rod. The aerosol-generating article 30 has a diameter substantially equal to the diameter of the cavity 25 of the device 10 and a length greater than the depth of the cavity 25, such that when the article 30 is received within the cavity 25 of the device 10, the mouthpiece 32 extends outside the cavity 25 and may be withdrawn by the user in the same manner as a conventional cigarette. In a preferred embodiment, the aerosol-generating article is 45 mm long and 7.2 mm in diameter.

[0091] In use, a user inserts the article 30 into the cavity 25 of the aerosol-generating device 10 and turns on the device 10 by tapping the touch-sensitive OLED screen 60, activating the heater 40 and initiating a usage session. The touch-sensitive OLED screen 60 functions as both a display and a user interface. The heater 40 heats the aerosol-forming substrate of the article 30, which causes the volatile compounds of the aerosol-forming substrate 31 to be released and atomized to form an aerosol. The user draws on the mouthpiece of the article 30 and inhales the aerosol generated from the heated aerosol-forming substrate. After activation, the temperature of the heater 40 increases from ambient temperature to a predetermined temperature to heat the aerosol-forming substrate. The control electronics of the device 10 provide power to the heater from the battery to maintain the temperature of the heater at a substantially constant level as the user puffs on the aerosol-generating article 30. The heater continues to heat the aerosol-generating article until the end of the usage session, at which point the heater is turned off and allowed to cool.

[0092] At the end of a usage session, the article 30 may be removed from the device 10 for disposal, and the device 10 may be coupled to an external power source for recharging the battery of the device 10.

[0093] The aerosol generating device is equipped with a light emitting indicator or display in the form of a touch-sensitive OLED screen 60. The OLED screen 60 is integrated into the housing 20 of the aerosol generating device 10.

[0094] FIG. 4 provides a schematic diagram of the various electronic components of the aerosol generating device and their interactions.

[0095] A microcontroller or controller 12 located within the housing 20 is connected to the battery 11, the heater 40, the timer 430, the OLED driver 13 and the OLED screen 60. The battery 11 provides energy to heat the heater 40 and to operate the other electrical components. When fully charged, the battery 11 has enough energy to power two complete usage sessions of the aerosol generating device. The battery 11 is a rechargeable battery and can be connected to an external power source to be recharged.

[0096] The heater 40 converts the energy provided by the battery into heat to heat the aerosol generating device sufficiently to form the aerosol. During operation, the controller 12 controls the supply of energy from the battery to maintain the heater at a substantially constant aerosol generating temperature.

[0097] The timer 430 provides timing signals to the controller 12. The OLED screen 60 is configured to receive user input, send signals to the controller, and emit visual indications in response to control signals received from the controller 12. The battery 11 and the controller 12 are coupled to each other and located within the housing 20. The controller 12 also incorporates a memory module 12a. The controller 12 is in turn coupled to both the heater element 40 and the OLED driver 13. The microcontroller 12 and the OLED driver 13 collectively form the control electronics section 100 of the aerosol generating device 10. The memory module 12a contains instructions that are executed by the controller 12 during use of the device 10. The instructions stored in the memory module 12a include criteria for determining the duration of a usage session, as well as other data and information related to the control and operation of the aerosol generating device 10. When activated, the controller 12 accesses the instructions contained in the memory module 12a and controls the supply of energy from the battery 11 to the heater element 40 according to the instructions contained in the memory module 12a. The controller 12 also controls the supply of energy to the OLED driver 13 and the OLED screen 60 .

[0098] The aerosol generating device 10 of this particular embodiment is configured to determine and monitor the progress of a use session and output a visual indication of the progress of the use session as a continuous sequence of different display states, which may flow together as an animation to indicate the progress.

[0099] With reference to Figures 5a-5f, a simple exemplary sequence of 13 different display states is shown. The OLED display screen 60 has a circular shape with dimensions of 9mm x 9mm (i.e. 9mm diameter). The OLED screen is configured to illustrate the progression of an event, such as a usage session, as a gradually increasing ring of light, e.g., a wax ring of light. In the context used herein, the term "wax" means gradually or progressively increasing. In an initial stage, when the event has just started and no progress has been made, the ring is not illuminated 51a. In a final stage, when the event is completed, the ring is fully illuminated 51f.

[0100] As shown in Figure 5a, the OLED screen 60 shows a first state of progression, with the display ring unilluminated 51a. It should be noted that while the unilluminated ring is shown in Figure 5a for illustrative purposes, when unilluminated there may be no display of the ring.

[0101] In a second viewing state, an arcuate section 51b of the ring of approximately 30 degrees is illuminated on the OLED screen 60, as shown in FIG. 5b.

[0102] It should be noted that the OLED screen can be configured to display in many different ways. For example, in some embodiments, the display ring shown in Figure 5a may be illuminated as a first color 51a when the device is in a first display state, and that color may gradually change to a second color 51b as an event undergoes its progression through different display states.

[0103] In a third display state, an arcuate section of the ring of approximately 60 degrees is illuminated on the OLED screen.

[0104] In a fourth display state, an approximately 90 degree ring arcuate section 51c is illuminated on the OLED screen 60, as shown in FIG. 5c.

[0105] In the fifth display state, an arcuate section of the ring of approximately 120 degrees is illuminated on the OLED screen.

[0106] In the sixth display state, an arcuate section of the ring of approximately 150 degrees is illuminated on the OLED screen.

[0107] In the seventh display state, an arcuate section of the ring of approximately 180 degrees is illuminated on the OLED screen.

[0108] In an eighth display state, an arcuate section 51d of the ring of approximately 210 degrees is illuminated on the OLED screen 60, as shown in FIG. 5d.

[0109] In a ninth display state, an arcuate section of the ring of approximately 240 degrees is illuminated on the OLED screen.

[0110] In the tenth display state, an arcuate section of the ring of approximately 270 degrees is illuminated on the OLED screen.

[0111] In an eleventh display state, an arcuate section of the ring of approximately 300 degrees is illuminated on the OLED screen.

[0112] In a twelfth display state, as shown in FIG. 5e, an arcuate section 51e of the ring of approximately 330 degrees is illuminated on the OLED screen 60.

[0113] In a thirteenth display state, as shown in FIG. 5f, an arcuate section 51f of the ring of approximately 360 degrees is illuminated on the OLED screen 60, ie the complete ring is illuminated, indicating 100% progression.

[0114] This same information can be presented in tabular form, as seen in Table 1 below. [Table 1]

[0115] The above example has 13 display states, including no illumination. It is clear that by increasing the number of states, the resolution of the display can be improved. For example, there may be no perceptible jumps between different display states, and the display rings shown in Figures 5a-5f appear to grow continuously as the event progresses.

[0116] Although a gradually increasing or waxing ring may provide an indication of progress, it is clear that a gradually decreasing or fading ring may achieve the same purpose.

[0117] Using a ring as a progress indicator may provide several advantages since the space within the ring may be used for other indications. For example, the OLED screen 60 may be configured to display data related to the use of the aerosol generating device, such as the number of remaining use sessions. As shown in FIG. 5g, indicator marks 55a55b may be positioned within the progress ring to indicate two remaining use sessions. As shown in FIG. 5h, a single indicator mark 55c may be positioned within the progress ring to indicate one remaining use session.

[0118] In a further simple sequence for indicating progression, a circular display zone 61a of the OLED screen 60 may be gradually filled with illumination to indicate the progression of an event such as a usage session or a pre-heating operation. As previously mentioned, this progression may be broken down into any number of display stages, for example 11 stages.

[0119] In Fig. 6a, the OLED screen 60 is shown in a first or non-illuminated stage indicating 0% progression. As the event progression progresses, the circular display zone fills with increasing illumination, with the percentage of illumination indicating the event progression. For example, Fig. 6b shows an OLED screen with the bottom 20% of the screen illuminated 61b, indicating 20% ​​progression of the event. Fig. 6c shows an OLED screen with the bottom 60% of the screen illuminated 61c, indicating 60% progression of the event. Fig. 6d shows an OLED screen with the entire screen illuminated 61d, indicating 100% progression of the event.

[0120] This progression through 11 display states, including an unilluminated state, is shown in Table 2. As the number of display states increases, the increase in illumination between successive states decreases, resulting in an increase in the resolution of the possible display. [Table 2]

[0121] When fully charged, the battery can provide enough energy for at least one full use session. The battery may provide enough energy for more than one use session (e.g., 20 use sessions).

[0122] The aerosol-generating article for use with the device has a finite amount of aerosol-forming substrate, and therefore the use session needs to have a finite duration to prevent a user from attempting to generate aerosol when the aerosol-forming substrate is depleted. The use session is configured to have a maximum duration determined by a period of time from the start of the use session. The use session is also configured to have a duration less than the maximum duration if a user interaction parameter recorded during the use session reaches a threshold value before the maximum duration determined by the timer.

[0123] In a particular embodiment, the user interaction parameter is the number of puffs taken by the user during a use session. Thus, in a particular embodiment, the aerosol generating device is configured such that each use session has a duration of 6.5 minutes (390 seconds) from the start of the use session, or if the user takes 14 puffs within 6.5 minutes from the start of the use session, 14 puffs. The exact time or number of puffs may be changed to any suitable value. For example, a session may have a duration limited to 6 minutes or 5.5 minutes. As a further example, the number of puffs allowed may be limited to 13 or 12.

[0124] During a use session, a user may wish to have an indication of their progress through the use session, for example, a user may wish to know approximately how many puffs they have left in a use session, or approximately how much time is left.

[0125] The controller includes a puff counter to monitor the number of puffs taken during a usage session. The number of puffs taken by the user is determined by monitoring the power supplied to the heater during a usage session. When the user puffs, the airflow cools the heater and therefore a greater amount of energy is supplied by the battery to maintain the temperature of the heater at its operating temperature. Hence, by monitoring the power supplied by the heater, the controller can determine the number of puffs taken during a usage session.

[0126] To monitor progress, a use session is divided into several successive phases, starting with a first phase initiation when the use session begins and ending with a final phase when the use session ends, with the passage from one phase to the next determined by time and number of puffs as well as the use session. Each phase is considered to be completed when the criteria for that phase meet a predefined threshold. As the use session progresses through the successive phases, the controller commands the light-emitting indicator to emit a signal indicative of each successive phase. Thus, the user knows the approximate progress of the use session.

[0127] In a particular embodiment, a usage session may be divided into 13 successive phases for display purposes. Figures 7, 8, and 9 show flow diagrams illustrating the method steps involved in displaying the progress of a usage session to a user.

[0128] Step 600 : A user inserts an aerosol-generating article 30 into the cavity 25 of the device 10 and initiates a usage session by tapping the touch-sensitive OLED screen 60 . Step 605: A timer is started to record the time that has elapsed during the use session, and a puff counter is started to record the number of puffs taken during the use session. Step 607: The first phase of the usage session is considered to begin when the usage session begins, and the controller instructs the OLED display 60 to output an indication of the first or initial progress of the usage session. Step 610: The first phase ends and the second phase begins 30 seconds after the start of the use session, or one puff after the start of the use session if the user takes a puff before 30 seconds have elapsed since the start of the use session. Step 615: The controller instructs the OLED display 60 to output an indication of the second progress of the usage session. Step 620: The second phase ends and the third phase begins after 60 seconds have elapsed since the start of the use session, or after two puffs from the start of the use session if the user takes a puff before 60 seconds have elapsed since the start of the use session. Step 625: The controller instructs the OLED display 60 to output an indication of the third progress state of the usage session. Step 630: The third phase ends and the fourth phase begins after 90 seconds have elapsed since the start of the use session, or after three puffs from the start of the use session if the user takes a puff before 90 seconds have elapsed since the start of the use session. Step 635: The controller instructs the OLED display 60 to output an indication of the fourth progress state of the usage session. Step 640: The fourth phase ends and the fifth phase begins after 120 seconds have elapsed since the start of the use session, or after four puffs since the start of the use session if the user takes a puff before 120 seconds have elapsed since the start of the use session. Step 645: The controller instructs the OLED display 60 to output an indication of the fifth progress state of the usage session. Step 650: The fifth phase ends and the sixth phase begins after 150 seconds have elapsed since the start of the use session, or after five puffs since the start of the use session if the user takes a puff before 150 seconds have elapsed since the start of the use session. Step 655: The controller instructs the OLED display 60 to output an indication of the sixth progress state of the usage session. Step 660: The sixth phase ends and the seventh phase begins after 180 seconds have elapsed since the start of the use session, or after six puffs from the start of the use session if the user takes a puff before 180 seconds have elapsed since the start of the use session. Step 665: The controller instructs the OLED display 60 to output an indication of the seventh progress state of the usage session. Step 670: The seventh phase ends and the eighth phase begins after 210 seconds have elapsed since the start of the use session, or after seven puffs from the start of the use session if the user takes a puff before 210 seconds have elapsed since the start of the use session. Step 675: The controller instructs the OLED display 60 to output an indication of the eighth progress state of the usage session. Step 680: The eighth phase ends and the ninth phase begins after 240 seconds have elapsed since the start of the use session, or after eight puffs from the start of the use session if the user takes a puff before 240 seconds have elapsed since the start of the use session. Step 685: The controller instructs the OLED display 60 to output an indication of the ninth progress state of the usage session. Step 690: The ninth phase ends and the tenth phase begins after 270 seconds have elapsed since the start of the use session, or after 9 puffs since the start of the use session if the user takes a puff before 270 seconds have elapsed since the start of the use session. Step 695: The controller instructs the OLED display 60 to output an indication of the tenth progress state of the usage session. Step 700: The tenth phase ends and the eleventh phase begins after 300 seconds have elapsed since the start of the use session, or after 10 puffs from the start of the use session if the user takes a puff before 300 seconds have elapsed since the start of the use session. Step 705: The controller instructs the OLED display 60 to output an indication of the eleventh progress state of the usage session. Step 710: The eleventh phase ends and the twelfth phase begins after 330 seconds have elapsed since the start of the use session, or after 11 puffs since the start of the use session if the user takes a puff before 330 seconds have elapsed since the start of the use session. Step 715: The controller instructs the OLED display 60 to output an indication of the twelfth progress state of the usage session. Step 720: The twelfth phase ends and the thirteenth, or final, phase begins after 360 seconds have elapsed since the start of the use session, or after 11 puffs from the start of the use session if the user takes a puff before 360 ​​seconds have elapsed since the start of the use session. Step 725: The controller instructs the OLED display 60 to output an indication of the progress of the 13 usage sessions. Step 730: The thirteenth phase is the final phase of the use session. During the final phase, the user may take two puffs, bringing the total number of puffs during the use session to fourteen. The thirteenth progress indication may include a further indication that the thirteenth phase is the final phase. For example, the output indication may include a color change as well as an overall intensity change to indicate progress. The thirteenth phase ends after 390 seconds have elapsed since the start of the use session, or after 14 puffs since the start of the use session if the user takes a puff before 390 seconds have elapsed since the start of the use session. Step 735: The usage session ends.

[0129] The same information set forth in FIGS. 7-9 may be presented in tabular form, for example, as in Table 3 below. [Table 3]

[0130] The above embodiment divides a use session into 13 successive phases, each of which ends when a particular criterion relating to the number of puffs or elapsed time is met. Each of the 13 successive phases may be represented by one of 13 successive display states. As an example, if the aerosol generating device has an indicator in the form of an OLED screen, the 13 successive display states may be those listed in Table 1 above.

[0131] In further particular embodiments, control of a use session in the aerosol generating devices shown in Figures 1-4 may be determined with respect to the volume of aerosol delivered to a user during a use session. During a use session, a user may wish to have an indication of their progress through the use session. For example, a user may wish to know approximately how much potentially deliverable aerosol they have left in a use session, or approximately how much time is left.

[0132] Thus, in certain embodiments, the aerosol generating device is configured such that each use session has a duration of 6.5 minutes (390 seconds) from the start of the use session, or a predetermined maximum volume of aerosol is delivered if that predetermined volume of aerosol is delivered to the user within 6.5 minutes from the start of the use session. The predetermined maximum volume of aerosol may be, for example, 750 ml of aerosol. The time or aerosol volume threshold may be set to any suitable number.

[0133] The controller is configured to detect puffs taken during a use session. A puff start point and a puff end point for each detected puff are determined by monitoring the power supplied to the heater during the use session. When the user puffs, the airflow cools the heater, and therefore a greater amount of energy is supplied by the battery to maintain the temperature of the heater at its operating temperature. Therefore, by monitoring the power supplied by the heater, the controller can determine the start point and end point of a puff taken during a use session. By integrating the monitored power between the detected puff start point and the detected puff end point, a calculation of the aerosol delivered may be obtained. By summing the calculations of the aerosol delivered during a use session, a cumulative value of the aerosol delivered during a use session may be obtained.

[0134] To monitor progress, the use session is divided into several successive phases, beginning with a first phase start when the use session begins and ending with a final phase when the use session ends, with the passage from one phase to the next determined by time and the cumulative volume of aerosol delivered. As the use session progresses through the successive phases, the controller commands the OLED display to emit a signal to display each successive phase. Thus, the user knows the approximate progress of the use session.

[0135] In certain embodiments, the use session controlled according to the second selected criteria may be divided into 13 consecutive phases for display purposes. A user initiates a use session by inserting an aerosol-generating article 30 into the cavity 25 of the device 10 and tapping the touch-sensitive OLED screen 60. A timer is initiated to record the time elapsed during the use session, and the controller is initiated to identify the puffs taken during the use session and calculate the volume of aerosol delivered during each puff. The first phase of a use session is considered to have begun when the use session begins.

[0136] During the first phase, the controller commands the OLED display 60 to emit a signal indicating that the use session is in the first phase. The first phase ends and the second phase begins after 30 seconds have elapsed since the start of the use session, or after the first predetermined volume of aerosol has been delivered since the start of the use session if the first predetermined volume of aerosol was delivered before 30 seconds have elapsed since the start of the use session. The first predetermined volume of aerosol may be, for example, 60 ml.

[0137] The second phase of the use session is considered to have begun when the first phase has ended. During the second phase, the controller commands the OLED display 60 to emit a signal indicating that the use session is in the second phase. The second phase ends and the third phase begins after 60 seconds have elapsed since the start of the use session, or after the second predetermined volume of aerosol has been delivered since the start of the use session, if the second predetermined volume of aerosol has been delivered before 60 seconds have elapsed since the start of the use session. The second predetermined volume of aerosol may be, for example, 120 ml.

[0138] This process is repeated for each of phases 3 through 13. After the 13th and final phase, the usage session ends.

[0139] Information about the presentation states associated with each phase and the criteria for exiting each phase is provided in Table 4 below. [Table 4]

[0140] The above example divides a use session into 13 successive phases, each of which ends when a second criterion relating to delivered aerosol volume or elapsed time is met. Each of the 13 successive phases may be represented by one of 13 successive display states. As an example, if the aerosol generating device has an indicator in the form of an OLED display, the 13 successive display states may be those states set forth in Table 1 above.

[0141] The aerosol generating device may go through a number of different operational events, and it may be desirable for the user to be able to determine the progress or status of one or more of these events. In a further embodiment, the aerosol generating device is configured to undergo a pre-heating operation prior to the start of a use session in order to raise the temperature of the heater from an ambient temperature to an operating temperature. Such a pre-heating operation or pre-heating mode may be part of the use session, but may also be initiated prior to the use session. As described above in relation to the use session, the pre-heating operation may be divided into several successive phases, and the progress in each of those successive phases may be represented by one of several display states.

[0142] Progression through the pre-heat operation may be controlled relative to temperature, and time may also be a control parameter, but the device may be configured to not operate a use session if the heater temperature does not reach a predetermined operating temperature.

[0143] In a particular embodiment using the aerosol generating device shown in Figures 1-4, the pre-heating operation is controlled by the temperature of the heater and is divided into 13 successive phases, each phase being terminated when the temperature of the heater meets a predetermined threshold. The temperature of the heater may be monitored directly, for example by use of a temperature sensor such as a thermistor or thermocouple. Alternatively, the temperature of the heater may be derived by monitoring other parameters, for example by monitoring the current and / or voltage supplied to the heater. When the pre-heating operation is initiated, power is supplied to the heater and the temperature of the heater increases. In a particular embodiment, the pre-heating phase may be terminated when the temperature of the heater reaches 390°C. The temperature at the end of the pre-heating phase may be changed to any suitable temperature. It is noted that the temperature at the end of the pre-heating phase may be higher or lower than the desired operating temperature for generating aerosol during the use session.

[0144] Table 5 below shows the phases and criteria for determining and indicating the progress of the preheat operation. [Table 5]

[0145] The above embodiment divides the preheat operation into 13 successive phases, each of which ends when a particular criterion regarding the heater temperature is met. Each of the 13 successive phases may be represented by one of 13 successive display states. As an example, if the aerosol generating device has an indicator in the form of an OLED display, the 13 successive display states may be the states set forth in Table 1 above.

[0146] In certain embodiments, the aerosol generating device illustrated in Figures 1-4 may be configured to determine and display progress with respect to two or more events. As a particular example, the aerosol generating device may be configured to undergo a pre-heating operation followed immediately by a usage session. A user initiates the pre-heating operation by inserting an aerosol-generating article 30 into the cavity 25 of the device 10 and tapping the touch-sensitive OLED screen. Power is provided to the heater of the device and the controller is initiated to determine the temperature of the heater. The first phase of the pre-heating operation is considered to have begun when the pre-heating operation begins. As the temperature of the heater increases, the controller commands the visual indicator to display the sequence of display states shown in Table 4 above. The display states may conveniently indicate the progress of the pre-heating operation, for example, as an increase in the overall brightness provided by the OLED display 60, as depicted in Figures 6a-6d.

[0147] A use session begins immediately upon completion of the pre-heat operation. The use session may progress, for example, as described above in Table 5. An indication state may conveniently indicate the progress of the use session as a wax ring intensity, for example, as described in relation to Figures 5a-5f and Table 1 above.

[0148] For the purposes of this specification and the appended claims, unless otherwise indicated, all numbers expressing amounts, quantities, percentages, and the like, should be understood in all instances as modified by the term "about." Also, all ranges include the maximum and minimum points disclosed, and include any intermediate ranges therein, which may or may not be specifically recited herein. Thus, in this context, the number "A" is understood as "A" ± 10%. Within this context, the number "A" may be considered to include a numerical value that is within the general standard error for the measurement of the property that the number "A" modifies. The number "A" may, in some cases as used in the appended claims, deviate by the percentages recited above, provided that the amount by which "A" deviates does not materially affect the basic and novel property(ies) of the claimed invention. Also, all ranges include the maximum and minimum points disclosed, and include any intermediate ranges therein, which may or may not be specifically recited herein.

Claims

1. An aerosol generator for generating an aerosol from an aerosol-forming substrate, comprising an OLED display configured to display data indicative of an operating state of the aerosol generator, wherein the OLED display is controlled to display an outer illumination zone partially or completely surrounding an inner illumination zone, and the OLED display is controlled to: i) selectively display in one of the outer illumination zone and the inner illumination zone to generate a predetermined first display conveying first information; and ii) selectively activate the other of the outer illumination zone and the inner illumination zone to generate a predetermined second display conveying second information.

2. The aerosol generator according to claim 1, further comprising a controller configured to control the OLED display to display the data regarding the operation of the aerosol generator.

3. The aerosol generator according to claim 1, wherein the device comprises a housing, at least a part of the housing having a curved outer contour, and the OLED display is an OLED screen adapted to the part of the housing having the curved outer contour.

4. The aerosol generator according to any one of claims 1 to 3, wherein the OLED display is a user interface, for example, the OLED display is touch-sensitive to enable user input, for example, the OLED display is a user input element having capacitive touch sensitivity.

5. The aerosol generator according to any one of claims 1 to 3, wherein the device is configured to detect a user interaction with the OLED display, such as a user touching the OLED display, and convert the user interaction into a user interaction signal, and the device is further configured to use the user interaction signal to control one or more aspects of the aerosol generator, for example, the user interaction signal is configured to control one or more operating modes of the aerosol generator.

6. The aerosol generating device according to claim 4, wherein the device is configured to recognize and distinguish two or more different user interactions with the OLED display, and each of the two or more different user interactions is a different user input.

7. The aerosol generating device according to claim 6, wherein the two or more user interactions are selected from the list consisting of single tap, double tap, triple tap, long touch, left swipe, right swipe, swipe up, swipe down, and a pattern of swipes.

8. The aerosol generating device according to any one of claims 1 to 3, wherein the device comprises a graphic display module configured to drive the OLED display.

9. The aerosol generating device according to any one of claims 1 to 3, comprising a memory configured to store one or more graphic files that define the graphics displayed by the OLED display.

10. The aerosol generating device according to any one of claims 1 to 3, wherein the device comprises a controller configured to monitor the progress of an operation event and to control the OLED display to display the progress of the operation event.

11. The aerosol generating device according to claim 10, wherein the device is configured to monitor the progress of a use session during which aerosol is generated and to display the progress of the use session.

12. The aerosol generating device according to claim 10, wherein the aerosol generating device is configured to monitor parameters related to the progress of the event.

13. The aerosol generating device according to any one of claims 1 to 3, wherein the OLED display is controlled to display the progress of an event, such as a use session, as a sequence of illumination states.

14. The outer illumination zone surrounds at least 50%, or preferably at least 60%, or preferably at least 70%, or preferably at least 80%, or preferably at least 90%, or all of the inner illumination zone. Preferably, the first information is related to the progress of the operation phase of the aerosol generator, the second information is related to the state of the aerosol generator, the predetermined first display is a predetermined sequence or animation, and the predetermined second display is a predetermined symbol, logo, or light emission. The aerosol generator according to any one of claims 1 to 3.

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