Aerosol generation device

Abstract

An aerosol generation device (100) comprises one or more electrochromic display assemblies (210, 220) for displaying information to a user and which may be curved or flexible, and which may be provided on a cartridge, a lid or a housing of the device. At least one of the one or more electrochromic display assemblies comprises an electrochromic display comprising a plurality of segments (270) arranged in a matrix and a driving circuit, wherein each segment of the plurality of segments is independently controllable.

Description

[0001] Aerosol generation device

[0002] The present disclosure relates to an aerosol generation device. More specifically, the present disclosure relates to aerosol generation devices comprising electrochromic display assemblies for displaying information to a user.

[0003] Background

[0004] An aerosol generation device is configured to heat an aerosol substrate to generate aerosol for inhalation. An aerosol generation device typically includes a housing that has a display to provide information to a user. Information could relate to, for example, the heating status, battery information or other metrics that inform the user about the aerosol generation device.

[0005] Typically, displays on aerosol generation devices are provided by LCD, LED or OLED display arrangements. However, such display types require a constant power supply to display information which can negatively impact the energy consumption of the aerosol generation device.

[0006] Integration of such display types in the housing of a device can also be challenging due to connection and size requirements of the displays. It may therefore not be possible to position displays on the aerosol generation device in locations that would be optimal to display information for an enhanced user experience.

[0007] Further, use of aerosol generation devices often takes place outdoors, where strong ambient light could reduce readability of the displays. It is desired to ensure that the user can conveniently access the information provided by the display in all lighting conditions.

[0008] It is the object of the invention to overcome at least some of the above referenced problems, or to provide an alternative approach. In particular, it is the object of the invention to improve the display capabilities on an aerosol generation device to enhance the user experience by reliably providing information to the user.

[0009] Summary According to the present disclosure there is provided an aerosol generation device including the features as set out in the claims.

[0010] According to a first aspect, there is provided an aerosol generation device comprising one or more electrochromic display assemblies for displaying information to a user, at least one of the one or more electrochromic display assemblies comprising an electrochromic display comprising a plurality of segments arranged in a matrix and a driving circuit, and wherein each segment of the plurality of segments is configured to be independently controllable.

[0011] The electrochromic display assemblies have lower energy requirements as compared to LCD, LED or OLED, and can maintain their optical states without a continuous input of power. It is therefore advantageous to provide an electrochromic display which has a lower energy consumption to optimise battery life of the aerosol generation device.

[0012] The electrochromic display assemblies are flexible and scalable so that they can be positioned anywhere on the device. Advantageously, this means that the information can be displayed to the user in the most convenient and intuitive position in order to enhance user experience. This is also particularly advantageous as smaller aerosol generation devices are developed. Additionally, the electrochromic display assemblies can be simply integrated onto a range of different substrates on the device, with small space requirements provided by the driving circuit. This means that the electrochromic display assemblies are a reliable and robust means to display information to a user.

[0013] The electrochromic displays have improved readability as compared to LCD, LED or OLED displays, especially in strong ambient light, so that the user can easily access information regardless of the lighting conditions.

[0014] The electrochromic displays comprise segments arranged in a matrix. As such, a range of information, including complex information, can be displayed to a user to ensure that user experience is improved.

[0015] The one or more electrochromic display assemblies may be curved or flexible.

[0016] The one or more electrochromic display assemblies may comprise a first electrochromic display assembly and a second electrochromic display assembly, wherein the first electrochromic display assembly and the second electrochromic display assembly are separated from each other on the aerosol generation device.

[0017] The first electrochromic display assembly may be configured to display a first set of information and the second electrochromic display assembly is configured to display a second set of information, different to the first set. The second electrochromic display assembly may be configured change colour to display a simple information to a user.

[0018] In one example, the first electrochromic display assembly is arranged on a body of the aerosol generation device and the second electrochromic display assembly is arranged on a cartridge of the aerosol generation device. In this example, the first electrochromic display may be configured to display a first set of information to a user and the second electrochromic display may be configured to display a second set of information to a user. In one example, the second electrochromic display assembly may be configured to display information relating to the remaining amount of aerosol precursor material in the cartridge of the aerosol generation device.

[0019] In this example, the second electrochromic display assembly may be configured to display information to a user upon detection of a puff. A puff sensor may be used to determine if a user is drawing on the cartridge. In one example, the second electrochromic display assembly may be configured to display information relating to the remaining amount of aerosol precursor material.

[0020] In one example, there is provided a cartridge for an aerosol generation device, the cartridge comprising an electrochromic display assembly. In one example, the cartridge comprises a mouthpiece. The cartridge may include a liquid aerosol precursor material. The cartridge may be configured to be coupled with a main body of the aerosol generation device. The electrochromic display assembly may be configured to provide information to a user upon detection of a user taking a puff on the cartridge. The electrochromic display assembly may be configured to display information relating to the remaining amount of aerosol precursor material in the cartridge of the aerosol generation device. In one example, the electrochromic display assembly comprises an electrochromic display comprising a plurality of segments arranged in a matrix and a driving circuit. In one example, the electrochromic display assemblies on the cartridge may be configured to display information to a user upon receipt of a user input. For example, the user input may be the activation of a button or haptic input, for example a double tap of cartridge. In examples, the cartridge may include a capacitive or resistive sensor that may be pressed in order to activate the one or more electrochromic displays. The cartridge may be used with any compatible aerosol generation device main body. In some examples, the main body may not have an electrochromic display on the main body itself. The cartridge may receive electric power from the main body to power the electrochromic display on the cartridge. For example, the cartridge may comprise one or more electric contacts configured to couple with one or more electric contacts of a main body. These contacts may also be used to provide electric power to the cartridge to generate the aerosol.

[0021] In one example, the second electrochromic display assembly comprises one or more connection terminals configured to extend through the cartridge to electrically couple with one or more electrical terminals of the body of the aerosol generation device. That is to say that the battery of the aerosol generation device may provide electric power to the second electrochromic display. In one example, the aerosol generation device may provide a pulse of electric power to the second electrochromic display in response to a puff being detected.

[0022] The aerosol generation device may comprise a housing comprising an opening through which an aerosol generation consumable is receivable in the housing, in use, and a lid configured to cover the opening in a first configuration and configured to allow access to the opening in the second configuration.

[0023] The first electrochromic display assembly may be located on the lid and the second electrochromic display assembly is located on the housing. These locations are convenient for a user.

[0024] The one or more electrochromic display assemblies may comprise a third electrochromic display assembly located within the opening of the housing. The use of the electrochromic display enables displays to be placed in various locations on the aerosol generation device that a traditional LED display would not be possible. At least one of the one or more electrochromic display assemblies may be integrated into the housing of the aerosol generation device.

[0025] The one or more electrochromic displays may be configured to display a code. The code may be a 2D code, such as a bar code or a QR code. This provides a simple, low power means for a user to easily access quite complex information, for example by using their mobile phone or similar device.

[0026] The driving circuit may comprise a multiplexer.

[0027] The one or more electrochromic displays may be operable to display information to a user in response to receiving an operational current of less than 10mA from the driving circuit. Providing an operation current of less than 10mA means that there is a relatively low energy consumption from the battery to power the electrochromic displays. Advantageously, less than 2m J of energy may be required every 15 minutes to maintain full contrast of the display on the one or more electrochromic display. This is significantly lower than the energy consumption of an OLED display.

[0028] The one or more electrochromic displays may be configured to display information in response to receiving a pulse of voltage from the driving circuit, wherein the wherein the one or more electrochromic displays is configured to maintain the information on the display for a period of time after the voltage has been removed.

[0029] At least one of the one or more electrochromic displays assemblies may be configured to display authentication information in response to an authentication request.

[0030] The one or more electrochromic display assemblies may be changeable between an off state and an on state in response to a user input.

[0031] The one or more electrochromic displays may have a refresh rate of less than 60Hz, more preferably less than 50Hz. In examples, the one or more electrochromic displays may have a refresh rate of less than 1 Hz. That is to say, that a constant current is not required to power the electrochromic displays, but rather the electrochromic display may be powered by a series of pulses of current.

[0032] The above referenced features may be combined together in various combinations. Brief Description of the Drawings

[0033] Examples of the present disclosure will now be described with reference to the accompanying drawings.

[0034] Figure 1 shows a schematic drawing of an aerosol generation device;

[0035] Figure 2 shows a perspective view of an aerosol generation device;

[0036] Figure 3 shows a partial perspective view of an aerosol generation device;

[0037] Figure 4 shows an exemplary schematic drawing of an electrochromic display assembly;

[0038] Figure 5 shows an exemplary functional schematic drawing of the driving circuit; and

[0039] Figure 6 shows a schematic drawing for an alternative aerosol generation device.

[0040] Detailed Description

[0041] As used herein, the term “aerosol precursor material”, “vapour precursor material” or “vaporizable material” are used synonymously and may refer to a material and / or composition, which may for example comprise nicotine or tobacco and a vaporising agent. The aerosol precursor material is configured to release an aerosol when heated or otherwise mechanically stimulated, such as by vibrations. Tobacco may take the form of various materials such as shredded tobacco, granulated tobacco, tobacco leaf and / or reconstituted tobacco. Nicotine may be in the form of nicotine salts. Suitable vaporising agents include: a polyol such as sorbitol, glycerol, and glycols like propylene glycol or triethylene glycol; a non-polyol such as monohydric alcohols, acids such as lactic acid, glycerol derivatives, esters such as triacetin, triethylene glycol diacetate, triethyl citrate, glycerin or vegetable glycerin. In some examples, the aerosol precursor material is substantially a liquid or a gel that holds or comprises one or more solid particles, such as tobacco particles extracted from tobacco materials or suspended in a solution or gel. An aerosol generation device is configured to aerosolise an aerosol precursor material without combustion in order to facilitate delivery of an aerosol to a user. Furthermore, and as is common in the technical field, the terms “vapour” and “aerosol”, and related terms such as “vaporize”, “volatilize” and “aerosolise”, may generally be used interchangeably.

[0042] As used herein, the term “aerosol generation device” is synonymous with “aerosol generating device” or “device” and may include a device configured to heat an aerosol precursor material and deliver an aerosol to a user, typically without combusting the aerosol precursor material. The device may be portable. “Portable” may refer to the device being for use when held by a user. The device may be adapted to generate a variable amount of aerosol, which can be controlled by a user input.

[0043] As used herein, the term “aerosol” may include a suspension of vaporizable material as one or more of: solid particles; liquid droplets; gas. Said suspension may be in a gas including air. Aerosol herein may generally refer to / include a vapour. Aerosol may include one or more components of the vaporizable material.

[0044] The disclosure generally relates to an aerosol generation device 100 having one or more electrochromic display assemblies 210, 220, 230 for displaying information to a user. At least one of the one or more electrochromic display assemblies 210, 220, 230 comprises an electrochromic display and a driving circuit. At least one of the electrochromic displays comprises a plurality of segments arranged in a matrix.

[0045] In brief overview, and with reference to Figure 1 , an aerosol generation device 100 comprises a housing 102. Within the housing 102, the aerosol generation device 100 comprises a battery unit 104 to supply power to the aerosol generation device 100. The aerosol generation device 100 also includes a controller 106, otherwise known as a processor or control unit, that is configured to control operation of the aerosol generation device 100 (and hence, the driving circuit) in use.

[0046] The aerosol generation device 100 comprises a chamber 108. The chamber 108 is configured to receive an aerosol generation consumable comprising aerosol generation material (not shown). In use, the aerosol generation consumable is received in the chamber 108 in the housing 102. The aerosol generation material may be in a solid form or a liquid form. The chamber 108 may be accessible via an opening 110. The opening 110 is an opening in the housing 102 of the aerosol generation device 100. The opening may be closable by a lid 112. The lid 112 forms part of the housing 102. The lid 112 is movable between a first configuration, where the opening 110 to the chamber 108 is covered and a second configuration, where the opening 110 to the chamber 108 is open and accessible. In examples, the lid 112 may comprise a user interface.

[0047] The aerosol generation device 100 may also comprise an energy provision system 114, such as a heater configured to heat the consumable. The energy provision system 114 could take any form configured to provide energy to the consumable to generate aerosol from the consumable. For example, it could take the form of a resistive or inductive heater or the like. It may also comprise a wick and coil arrangement configured to absorb liquid aerosol precursor material and generate an aerosol. Other arrangements of the energy provision system 114 and the aerosol generation device 100 are envisaged.

[0048] The aerosol generation device 100 be operable in a number of modes. For example, the aerosol generation device 100 may have an on-mode and an off-mode, and / or a sleep mode and an active mode. The aerosol generation device 100 may be described as being in the active mode when the energy provision system 114 is active. In other words, the active mode may be when a session of use is underway. In examples, the aerosol generation device 100 may have an eco-mode in which energy consumption is lower than in a standard mode. In examples, the aerosol generation device 100 may have a boost mode where energy consumption is higher. The aerosol generation device 100 may also be in an idling state when a session of use has not started.

[0049] The modes of the aerosol generation device 100 may be selectable by a user input. For example, the user input may be the opening of the lid 112 of the aerosol generation device 100. In examples, the user input may be the activation of a button or haptic input, for example a double tap of the aerosol generation device 100. In examples, the mode may be selected in response to the insertion of a consumable into the aerosol generation device 100 via the opening 110.

[0050] Referring to Figure 2, an aerosol generation device 100 is shown in perspective view.

[0051] In this example, the aerosol generation 100 device comprises a housing 102. The housing 102 may have a first face 103 and side 105 around the peripheral edge of the first face 103. A general display 250 is provided in the first face 103 which is easily visible to a user. The general display 250 is configured to display information relating to the general status of the aerosol generation device 100 and / or the energy provision system 114. The general display 250 may be an LED display. In examples, the general display 250 is an OLED display. In examples, the general display 250 is an electrochromic display.

[0052] One or more electrochromic display assemblies 210, 220 are provided on the aerosol generation device 100. The electrochromic display assemblies 210, 220 may be integrated into the housing 102 of the aerosol generation device 100.

[0053] The one or more electrochromic display assemblies 210, 220 may be configured to display information to a user upon receipt of a user input. For example, the user input may be the opening of the lid 112 of the aerosol generation device 100. In examples, the user input may be the activation of a button or haptic input, for example a double tap of the aerosol generation device 100. In examples, the aerosol generation device 100 may include a capacitive or resistive sensor that may be pressed in order to activate the one or more electrochromic displays. In examples, the one or more electrochromic displays may display information in response to the insertion of a consumable into the aerosol generation device 100 via the opening 110.

[0054] In Figure 2, a first electrochromic display assembly 210 is provided on the lid 112 of the aerosol generation device 100. In Figure 2, the lid 112 is shown in the first configuration, where it covers the opening 110 in the housing 102. In examples, further electrochromic display assemblies 210 may be provided on the lid 112. Each of the further electrochromic display assemblies 210 may display a different set of information.

[0055] In this example, a second electrochromic display assembly 220 is provided. The second electrochromic display assembly 220 is separate and distinct from the first electrochromic display assembly 210. The second electrochromic display assembly 220 may be provided on a front surface 103 of the housing 102. In examples, the second electrochromic display assembly 220 is provided on a side 105 of the housing 102. Referring to the example shown in Figure 3, a third electrochromic display assembly 230 may be provided in the opening 110 to the chamber 108. The third electrochromic display assembly 230 is separate to both the first electrochromic display assembly 210 and the second electrochromic display assembly 220.

[0056] In use, the electrochromic display assemblies 210, 220, 230 display information to user. The information may comprise one or more of: battery status; remaining number of sessions; device status; energy provision system status. In examples, the set of information may comprise other metrics such as a need for heater cleaning, battery replacement, optimisation of the heating profile and / or optimisation of the energy usage.

[0057] The first electrochromic display assembly 210 is configured to display a first set of information. The second electrochromic display assembly 220 may be configured to display a second set of information, different to the first set of information. In examples with a third electrochromic display assembly, the third electrochromic display assembly 230 may be configured to display a third, different, set of information.

[0058] In examples, the first electrochromic display assembly 210 is configured to display information relating to battery status. The second electrochromic display assembly 220 is configured to display information relating to the status of the energy provision system 114. The third electrochromic display assembly 230 is configured to display information relating to a requirement for a user to clean the chamber 108.

[0059] In examples, further electrochromic display assemblies may be provided on the aerosol generation device 100. For example, more than one electrochromic display assembly may be provided on the housing 102 and / or on the lid 112. In examples, only one or two of the electrochromic display assemblies 210, 220, 230 may be provided. In examples, more than three electrochromic display assemblies may be provided.

[0060] The first electrochromic display assembly 210 comprises an electrochromic display 211 and a driving circuit 212. In examples, the second electrochromic display assembly 220 and / or the third electrochromic display assembly 230 may comprise an electrochromic display and a driving circuit. The electrochromic display assembly and the driving circuit may be identical to those of the first electrochromic display assembly 210. The electrochromic displays in the first, second and / or third electrochromic display assemblies 210, 220, 230 are provided using reflective display technology with thin polymers that change colour in response to an electrical input. Advantageously, this provides for enhance readability under different light conditions. For example, by using electrochromic displays, a good reading of the displayed information is easier under strong ambient light, as compared to, for example, LCD, LED or OLED displays. This is particularly advantageous for tobacco products which may frequently be used outdoors.

[0061] The electrochromic displays in the first, second and / or third electrochromic display assemblies 210, 220, 230 are transparent when not in use. Advantageously, this means that the electrochromic displays can be implemented on any part of the aerosol generation device 100 and on any suitable colour background. This means that the electrochromic displays can be provided in the most appropriate position to enhance the user experience. It also means that the electrochromic displays are discreet so that the aesthetics of the aerosol generation device are not compromised by multiple displays.

[0062] The electrochromic displays in the first, second and / or third electrochromic display assemblies 210, 220, 230 are flexible. As such, the first and second electrochromic displays 210, 220 are curved around the contours of the housing.

[0063] The third electrochromic display assembly 230 is curved around the inside of the opening 110 to the chamber 108. Advantageously, the flexibility of electrochromic displays means that they can be integrated into any required position on the aerosol generation device 100. Further, electrochromic displays can withstand a range of temperatures so are not affected by proximity to an energy provision system or component thereof, for example a heating component. This advantageously means that the electrochromic display assembly 230 can be provided in or close to the chamber 108 and function reliably. Further, the electrochromic display assembly 230 may provide specific information to a user about the chamber 108, for example cleaning requirements, in a convenient location on the aerosol generation device 100, thereby enhancing the user experience.

[0064] The electrochromic displays in the first, second and / or third electrochromic display assemblies 210, 220, 230 can be provided in small areas on the aerosol generation device 100. In examples, each electrochromic display assembly 210, 220, 230 is provided in a different position on the aerosol generation device 100, as appropriate to enhance user experience. The electrochromic displays are easily scalable and thin. Advantageously, this means that information can be displayed to a user directly on the aerosol generation device 100 in any part of the housing 102, without compromising the aesthetics or other operation of the aerosol generation device 100. This is especially important as smaller aerosol generation devices are developed.

[0065] The electrochromic displays in the first, second and / or third electrochromic display assemblies 210, 220, 230 are compatible with several substrates that may be used for the housing or other components of the aerosol generation device 100. For example, the electrochromic displays can be readily and simply integrated into / onto glass, metal, plastic, fibres and / or textiles. Advantageously, this means that the electrochromic display assemblies 210, 220, 230 can be implemented on different types of aerosol generation devices.

[0066] As compared to other displays, such as LCD, LED or OLED displays, the electrochromic displays in the first, second and / or third electrochromic display assemblies 210, 220, 230 have low energy input requirements and a low energy consumption. The electrochromic displays have an optical memory effect, meaning that they can maintain their optical states for a period of time without continuous input of electrical power. Advantageously, this means that there is a lower energy consumption as compared to other display types, making the displays and, in turn, the aerosol generation device 100, more efficient. This also means that information can be displayed to a user for a prolonged period of time for increased readability and user experience, without requiring continuous power.

[0067] One or more of the electrochromic displays assemblies 210, 220, 230 may be configured to display a code. In examples, the code may be a 2D pattern, for example a bar code or a QR code. In examples, the QR code may be scannable by a user device, for example a mobile phone. This may take a user to a webpage or use manual which can display specific information about the aerosol generation device 100 at that time. This may be particularly useful during a battery replacement procedure in which the electrochromic display may continue to display the information (such as the QR code) even after the battery has been removed due to optical memory effect of the electrochromic displays. Therefore, a user would still be able to be directed to the necessary instructions by the QR code on the device, without the need to recharge the aerosol generation device 100. When the aerosol generation device 100 is new, the QR code may lead a user to webpage with instructions for the set-up of the device 100.

[0068] The electrochromic displays assemblies 210, 220, 230 may have an operating temperature of between approximately -25 degrees Celsius to 100 degrees Celsius.

[0069] Referring to Figure 4, the first electrochromic display assembly 210 is schematically shown as an example. The layout of the first electrochromic display 211 is shown. A first driving circuit 212 is also provided. In examples, the second electrochromic display assembly 220 and / or the third electrochromic display assembly 230 may also comprise second and third electrochromic displays and second and third driving circuits respectively. The layout of the second and third electrochromic displays may be identical to the first electrochromic display 211. The second and third driving circuits may be identical to the first driving circuit 212.

[0070] The electrochromic display 211 has a plurality of segments 270. The segments 270 are arranged in a matrix. The matrix may comprise 3 rows and 3 columns of segments 270, i.e. a 3 x 3 arrangement. In examples, the matrix may comprise more segments 270 than in a 3 x 3 arrangement segments as required. In examples, more segments 270 means that more complex information may be displayed, for example, by activating some segments and not others. In examples, each of the electrochromic display assemblies 210, 220, 230 provided on the aerosol generation device 100 may have different numbers of segments. Each segment 270 of the electrochromic display 211 may be independently controllable (e.g. activated). Advantageously, this means that detailed information may be readily displayed to the user on the aerosol generation device 100.

[0071] The driving circuit 212 is arranged together with the electrochromic display 211. The driving circuit 212 is an electric circuit arranged to provide power to each segment 270 of the corresponding electrochromic display 211. The driving circuit 212 is in communication with, and obtains power from, a power source. The power source may be the battery unit 104 within the housing 102. The driving circuit is controlled by the controller 106 of the aerosol generation device 100. Advantageously, the required power is low for the electrochromic display assemblies 210, 220, 230 as compared to other display types. The second and third driving circuits may be identical to the first driving circuit 212. In examples where the number of segments 270 in each electrochromic display differs, a driving circuit is provided that can suitably provide power to each segment 270 in the respective display.

[0072] In examples, the driving circuit 212 comprises a multiplexer. The multiplexer allows for control of the segments 270 without requiring complex wiring within the electrochromic display assembly 210. The use of a multiplexer in the driving circuit 212 means that the hardware is simplified. In examples, the multiplexer is replaced with (or used in addition to) a demultiplexer. The integration of a multiplexer and / or demultiplexer to provide control to the electrochromic display 211 is compact such that the electrochromic display assembly 210 can be integrated anywhere on the aerosol generation device 100.

[0073] The multiplexer significantly reduces the number of pins required to control the segments 270.

[0074] In one example, a demultiplexer may receive one input signal from the controller 106 and provides an input to each of the segments individually based on the control parameters.

[0075] Figure 5 shows a first example of a schematic functional diagram of the driving circuit 212. The driving circuit 212 receives an input and processes the input to provide control for each of the segments 270. The controller 106 may encode the input signal into the driving circuit 212 to determine which segment is configured to be controlled by the input signal. To control segment A, power may be provided to row 1 (R1) and column 1 (C1). That is, stepping the power provided from 0 to 1 on both R1 and C1 may turn on segment A. Similarly, stepping the power provided from 1 to 0 on both R1 and C2 may turn off segment B etc.

[0076] In some examples, the driving circuit 212 is part of the controller 106.

[0077] In some examples, the signal from the controller 106 to the driving circuit may be periodical, so the electrochromic display assembly 210, 220, 230 would only update in line with the refresh rate, which is intrinsic to electrochromic displays. In one example, the driving circuit 212 comprises a demultiplexer that splits the input into the control signals for each of the segments. The demultiplexers may operate on a time function. That is, a first part of the input signal may be relevant to segment A, a second part of the signal may be relevant to signal B and so on.

[0078] In some examples, the driving circuit 212 comprises two demultiplexers, one to provide control of columns and one to provide control of rows. The demultiplexers may operate on a time function. That is, a first part of the input signal to the first demultiplexer may be relevant to column 1 , a second part of the signal may be relevant to column 2 and so on. Further a first part of the input signal to the second demultiplexer may be relevant to row 1 , a second part of the signal may be relevant to row 2 and so on.

[0079] In one example (as shown in Figure 5), the driving circuit 212 may comprise one or more selection inputs (S1 , S2, S3) that are configured to provide inputs to the driving circuit 212 to determine which of the segments 270 is to be controlled. For example, a look-up table may be used to determine the relevant segment based on the selection inputs.

[0080] The example shown in figure 5 is based on a 3 x 3 arrangement of segments, but in order to display more complex information, then more segments can be provided, but the concepts are the same. For example, only 17 pins would be required to control a two-digit matrix (including 1 ground, 7 input pins including ground, enable and VCC).

[0081] The use of a demultiplexer would significantly reduce the amount of pins required and so it is convenient for use in situations in which the electrochromic display are intended to be positioned on parts of the aerosol generation device 100 that are difficult to access, such as the lid 112.

[0082] As described above, in some examples one or more of the electrochromic display assemblies 210, 220, 230 may be provided on the lid 112 of the aerosol generation device 100. As the lid 112 is movable, in one example there may only be a relatively small structure, such as a small column, that couples the lid 112 to the rest of the structure of the aerosol generation device 100. As such, there may be limited space to arrange connections between the electrochromic display assembly 210, 220, 230 and the associated power source. This is particularly relevant for when the one or more of the electrochromic display assemblies 210, 220, 230 provided on the lid 112 comprises the one or more segments arranged in a matrix as more complicated circuitry is required in a limited space.

[0083] In one example, the lid 112 may comprise one or more pin assemblies arranged on an underside of the lid 112 that may couple with the driving circuit 212 when the lid 112 is in the open position or the closed position. That is, there may be a first set of terminals on the device to couple with the pin assemblies when the lid 112 is in the closed configuration. The first set of terminals may be coupled with the driving circuit 212 to power the electrochromic display 210, 220, 230 on the lid 112 when the lid 112 is in the closed position.

[0084] There may be a second set of terminals on the device to couple with the pin assemblies when the lid 112 is in the open configuration. The second set of terminals may be coupled with the driving circuit 212 to power the electrochromic display 210, 220, 230 on the lid 112 when the lid 112 is in the open position.

[0085] In one example, the pin assembly is arranged on an underside of the lid 112 and is configured to continue supplying power during movement of the lid 112. That is, there may be a set of terminals coupled with the driving circuit 212 that are arranged to electrically couple with the pin assemblies on the underside of the lid throughout the movement of the lid 212 from the closed position to the open position (and vice-versa). In one example, the terminals extend in the direction of the movement of the lid 112. That is, electric power may be provided to the electrochromic display 210, 220, 230 on the lid 112 irrespective of the position of the lid 112

[0086] In some examples, the lid 112 may comprise one or more pin assemblies that couple with one or more micro-connectors on the structure in vicinity of the lid 112. For example, there may be micro-connectors located on walls in the vicinity of the lid 112 that electrically couple with one or more pin assemblies arranged on a side the lid 112. These micro-connectors may be positioned at various locations around the lid 112 to determine if the lid 112 is in an open or closed position. There may be a one-to-one relationship between the number of pin assemblies on the lid 112 and the one or more micro-connectors on the structure in the vicinity of the lid 112. In this example, power may be provided to the electrochromic display 210, 220, 230 on the lid 112 when a pin assembly is electrically coupled with a micro-connector. In one example, the micro-connectors may be configured to communicate wirelessly with the one or more pin assemblies, for example, by using one or more micro-coils. This solution is particularly compatible with the demultiplexer arrangements described previously to reduce the number of pin connections required for space efficiency.

[0087] In one example, the lid 112 may be coupled to the rest of the aerosol generation device via one or more magnetic sliders, that would free up space in the region underneath the lid 112 for the terminals and pin assemblies.

[0088] In a further example, a flex bending cable may be used to connect the one or more of the electrochromic display assemblies 210, 220, 230 on the lid 112 to the driving circuit 212. The flex bending cable may move together with the lid 112.

[0089] In use, the electrochromic display assembly 210 is changeable between on off state and an on state in response to a user input. In the on state, the electrochromic display assembly 210 displays information to a user. The information may be displayed by activation of one or more segments 270 of the electrochromic display 211. The multiplexer in the driving circuit 212 receives power from a power source and activates one or more segments 270 in the electrochromic display.

[0090] In examples, the electrochromic display assembly 210 is changeable between on off state and an on state in response to a change in mode of the aerosol generation device 100. In examples, the electrochromic display assembly 210 is changeable between on off state and an on state in response to a change in status of a component of the aerosol generation device 100. For example, information relating to a requirement to clean the chamber 108 or change the battery unit 104 may be displayed.

[0091] In use, the electrochromic display 211 is operable to display information to a user in response to receiving an operational current of less than 10mA from the driving circuit 212. Advantageously, the low operational current means that information can be displayed efficiently.

[0092] The driving circuit 212 supplies a pulse of power to the electrochromic display 211. In response, the electrochromic display 211 displays information to a user. When the voltage from the driving circuit 212 is removed, the electrochromic display 211 , maintains their optical states, i.e. , continues to display information to a user, for a period of time. Advantageously, not requiring a continuous input of voltage from the driving circuit 212 means that the electrochromic display 211 has lower energy requirements that other display types. As such, the aerosol generation device 100 is more efficient. For example, between 0.5V to 3V may be provided for around 100 to 150mS, (e.g. a power of between 50 to 500 micro watts) which would cause the electrochromic displays to display the information. In examples, the electrochromic display assembly 210 has a refresh rate of less than 60Hz. In some examples, the electrochromic display assembly 210 has a refresh rate of less than 50Hz. In examples, the electrochromic display assembly 210 has a refresh rate of less than 1 Hz. In examples, the electrochromic display assembly 210 has a refresh rate of less than 0.1 Hz, for example 17mHz, which would correspond with a refresh once per minute. A lower refresh rate, as compared to, for example OLED displays, means that energy consumption for the electrochromic display 211 is significantly reduced. Depending on the function of the electrochromic display assembly 210, a suitable refresh rate may be provided. For example, a refresh rate may need to be more frequent to display information relating to energy provision system status as compared to information relating to remaining sessions.

[0093] In examples, one or more of the electrochromic display assemblies 210, 220, 230 is configured to display authentication information to a user. The authentication information relates to the authentication status of a consumable that is inserted into the aerosol generation device 100 via the opening 110. In response to an authentication request, the aerosol generation device 100 may comprise a sensor that is configured to capture authentication information from a consumable upon insertion. In examples, the sensor is an optical sensor. In response to the captured information, the controller 106 may determine the authentication status of the consumable. The controller may control one or more of the driving circuits to display information relating to the authentication status of the consumable on the respective electrochromic display.

[0094] In one example, the one or more electrochromic displays are configured to display information to a user indicating that the aerosol generation device is at a low state of charge. For example, once the battery reaches a low threshold state of charge, then the controller may control one or more of the driving circuits to display information relating to the state of charge to a user. The one or more electrochromic displays 210, 220, 230 may be configured to display this information relating to the state of charge to a user without the need for a user to provide additional input into the aerosol generation device (e.g., pressing a button). The one or more electrochromic displays 210, 220, 230 may only stop providing this information once the aerosol generation device is connected to a charger.

[0095] The low threshold state of charge may vary across the lifetime of the aerosol generation device 100. For example, a first low threshold (e.g., 3.4V) is used to define minimum battery voltage in the idling state in which starting a new aerosolisation session is permitted. That is, if the idling voltage is less that the first low threshold then the aerosol generation device 100 would not be permitted to activate the energy provision system 114 to generate aerosol.

[0096] A second low threshold (e.g., 3.0V) may be used to deactivate an energy provision system 114 of the device 100 when reached. For example, once the remaining battery voltage reduces below the second low threshold then the energy provision system 114 is deactivated.

[0097] When the battery voltage reduces below a third low threshold (e.g. 3.0V), if the device 100 is in the idling state, any non-electrochromic displays are deactivated.

[0098] When the battery voltage reduces below a fourth low threshold (e.g. 2.6V), if the device 100 is in the idling state, any electrochromic displays are deactivated.

[0099] A fifth low threshold (e.g., 2.5V) may be the battery minimum voltage threshold provided by the manufacturer.

[0100] In examples, one or more of the first, second and / or third electrochromic display assemblies 210, 220, 230 may be a simple electrochromic display without a matrix arrangement. Advantageously, such electrochromic displays may display simpler information to a user and so need not be as complex. For example, the electrochromic displays may change colour to display information to a user.

[0101] Figure 6 shows an example of another form of aerosol generation device in the form of a vapour provision device 300. That is, the vapour provision device 300 is configured to generate a vapour from a liquid aerosol precursor material. In the schematic example shown in Figure 6, the aerosol provision device (in the form of a vapour provision device) comprises a body 362 and a cartridge 364. The cartridge 364 may be removably connected with the body 362, in use. The cartridge 364 comprises a reservoir for storing the aerosol precursor material. A wick and coil (not shown) may be provided in the body 362 or the cartridge 364 depending on the specific configuration of the aerosol generation device.

[0102] The wick and coil are for wicking aerosol precursor material from a reservoir and generating the vapour for inhalation by a user. The generated vapour may travel through a channel of a cartridge 364 for inhalation by the user. In some examples, the cartridge may include (or act as) a mouthpiece for the user. The cartridge 364 may be removable from the body 362 after use and replaced by a new cartridge.

[0103] In the schematic example in Figure 6, one or more of the electrochromic displays may be provided on the cartridge 364. One or more of the electrochromic display assemblies may be provided on the body 362. For example, the first electrochromic display assembly 310 may be provided on the body 362 and the second electrochromic display assembly 320 may be provided on the cartridge 364. In this example, the first electrochromic display assembly 310 may comprise a plurality of segments arranged in a matrix and the second electrochromic display assembly 320 may be a simple electrochromic display (that is, it need not comprise segments arranged in a matrix).

[0104] The first electrochromic display assembly 310 may display more complex information to a user such as the status of the device 300. The second electrochromic display assembly 320 may display information to the user such as the remaining amount of available aerosol precursor material in the cartridge 364.

[0105] In this example, the second electrochromic display assembly 320 may display a colour indicative of the remaining aerosol precursor material. For example, it may display a first colour, such as red if the amount of aerosol precursor material remaining is less than a lower threshold. The second electrochromic display assembly 320 may display a second colour, such as orange, if the amount of aerosol precursor material remaining is between the lower threshold and an upper threshold, such as 50%. The second electrochromic display assembly 320 may display a third colour, such as green, if the amount of aerosol precursor material remaining is above the upper threshold. In one example, the cartridge 364 may comprise a third electrochromic display assembly 330 that displays information to the user. For example, based on the thresholds given in the example above, the second electrochromic display assembly 320 may be configured to display the first and second colours and the third electrochromic display assembly 330 may be configured to display the third colour.

[0106] Other examples are envisaged, for example, both the second and third electrochromic display assemblies may be configured to turn a first colour if the remaining aerosol precursor material is below a first threshold, one is configured to turn to a second colour if the remaining aerosol precursor material is between the first threshold and second threshold and both the second and third electrochromic display assemblies may be configured to turn to the second colour if the remaining amount of aerosol precursor material is above the second threshold.

[0107] In one example, the one of more electrochromic displays on the cartridge may be powered to display information in response to a puff taken on the cartridge by a user. For example, the aerosol generation device may include a puff sensor (not shown) to detect a puff (inhalation on the cartridge by a user) and a pulse of power is provided to the one of more electrochromic displays on the cartridge in response to the detection of a puff.

[0108] Figure 6 also shows one or more electrical connections 366 of the second electrochromic display assembly configured to extend through the cartridge 364 to electrically couple with one or more electrical terminals 368 of the body 362 of the aerosol generation device. The one or more electrical connections 366 may be embedded within the bodywork of the cartridge 364. For example, they may be embedded within side walls of the cartridge 364. In this example, upon the detection of a puff, a pulse of power may be provided from the battery of the aerosol generation device to the second electrochromic display assembly 320. If present, the third electrochromic display 330 may have a similar arrangement of electrical connections 366 extending through the cartridge to couple with electric terminals 368 of the body 362.

[0109] In one example, the aerosol generation device 100 is in the form of an infused device. That is, the aerosol generation device may comprise a wick and coil arrangement to generate an aerosol from a liquid aerosol precursor material. This generated aerosol then passes through a solid aerosol precursor material within the device, before being inhaled by a user. In this example, a first electrochromic display assembly 310 may be placed on a first part of the device to display information to the user. A second electrochromic display 320 may be present on removable cartridge comprising the liquid aerosol precursor of the aerosol generation device 100.

[0110] Although a few example embodiments have been shown and described, it will be appreciated by those skilled in the art that various changes and modifications might be made without departing from the scope of the invention, as defined in the appended claims.

[0111] All the features disclosed in this specification, including any accompanying claims, abstract and drawings, may be combined in any combination, except combinations where at least some of such features and / or steps are mutually exclusive.

[0112] Each feature disclosed in this specification, including any accompanying claims, abstract and drawings, may be replaced by alternative features serving the same, equivalent, or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed is one example only of a generic series of equivalent or similar features.

[0113] The invention is not restricted to the details of the foregoing embodiments. The invention extends to any novel one, or any novel combination, of the features disclosed in this specification, including any accompanying claims, abstract and drawings, or to any novel one, or any novel combination, of the steps of any method or process so disclosed.

Claims

CLAIMS1 . An aerosol generation device comprising: one or more electrochromic display assemblies for displaying information to a user, at least one of the one or more electrochromic display assemblies comprising: an electrochromic display comprising a plurality of segments arranged in a matrix; and a driving circuit configured to provide power to each segment of the plurality of segments of the electrochromic display, and wherein each segment of the plurality of segments is configured to be independently controllable.

2. The aerosol generation device according to claim 1 , wherein the one or more electrochromic display assemblies is curved or flexible.

3. The aerosol generation device according to claims 1 or 2, wherein the one or more electrochromic display assemblies comprises: a first electrochromic display assembly; and a second electrochromic display assembly, wherein the first electrochromic display assembly and the second electrochromic display assembly are separated from each other on the aerosol generation device.

4. The aerosol generation device according to claim 3, wherein the first electrochromic display assembly is arranged on a body of the aerosol generation device and the second electrochromic display assembly is arranged on a cartridge of the aerosol generation device.

5. The aerosol generation device according to claim 4, wherein the second electrochromic display assembly comprises one or more electrical connections configured to extend through the cartridge to electrically couple with one or more electrical terminals of the body of the aerosol generation device.

6. The aerosol generation device according to any one of claims 3 to 5, comprising: a housing comprising an opening through which an aerosol generation consumable is receivable in the housing, in use; and a lid configured to cover the opening in a first configuration and configured to allow access to the opening in the second configuration.

7. The aerosol generation device according to claim 6, wherein the first electrochromic display assembly is located on the lid and the second electrochromic display assembly is located on the housing.

8. The aerosol generation device according to any one of claims 3 to 7, wherein the one or more electrochromic display assemblies comprises a third electrochromic display assembly located within the opening of the housing.

9. The aerosol generation device according to any one of claims 6 to 8, wherein at least one of the one or more electrochromic display assemblies is integrated into the housing of the aerosol generation device.

10. The aerosol generation device according to any preceding claim wherein the driving circuit comprises a multiplexer.

11. The aerosol generation device according to any preceding claim, wherein the one or more electrochromic displays are operable to display information to a user in response to receiving an operational current of less than 10mA from the driving circuit.

12. The aerosol generation device according to any one of the preceding claims wherein the one or more electrochromic displays are configured to display information in response to receiving a pulse of voltage from the driving circuit, wherein the wherein the one or more electrochromic displays is configured to maintain the information on the display for a period of time after the voltage has been removed.

13. The aerosol generation device according to any one of the preceding claims, wherein at least one of the one or more electrochromic display assemblies are configured to display authentication information in response to an authentication request.

14. The aerosol generation device according to any one of the preceding claims, wherein the one or more electrochromic display assemblies are changeable between an off state and an on state in response to a user input.

15. The aerosol generation device according to any one of the preceding claims, wherein the one or more electrochromic displays have a refresh rate of less than 60Hz.

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