Heating member and camera module comprising a heating member

Abstract

The heating member includes a first substrate, a second substrate facing the first substrate, a heating layer disposed between the first substrate and the second substrate, a positive temperature coefficient (PTC) heater element disposed in the heating layer, and a negative temperature coefficient (NTC) heater element disposed in the heating layer, wherein the PTC element and the NTC element are connected in series.

Description

Technical Field

[0001] This embodiment relates to a heating element and a camera module including the heating element. Background Technology

[0002] Recently, miniature camera modules have been developed and widely used in small electronic products such as smartphones, laptops and game consoles.

[0003] With the increasing popularity of automobiles, miniature camera devices are widely used not only in small electronic products but also in vehicles. For example, vehicles are equipped with dashcams for vehicle protection or to collect objective data on traffic accidents, rear-view cameras that allow drivers to monitor blind spots behind the vehicle via a screen to ensure safety when reversing, and ambient detection cameras that monitor the vehicle's surroundings.

[0004] The camera device includes a lens, a lens barrel housing the lens, an image sensor that converts the image of the object captured by the lens into an electrical signal, and a printed circuit board mounted on the image sensor. The housing that forms the exterior of the camera device is constructed to be sealed throughout its entire area to prevent internal components from being contaminated by moisture-containing foreign substances.

[0005] In the case of the camera module, since it is located on the exterior of the vehicle and is severely affected by outside air, frost, condensation, and ice formation frequently occur on the lens during winter. When frost, condensation, and ice formation occur on the lens, there is a problem of a significant reduction in the performance of the camera module. Summary of the Invention

[0006] Technical issues

[0007] This embodiment provides a heating element that can quickly remove frost or ice formed on the lens surface through a heating function and improve heating efficiency, and a camera device module including the heating element.

[0008] Technical solution

[0009] According to this embodiment, a heating component includes: a first substrate; a second substrate facing the first substrate; a heating layer disposed between the first substrate and the second substrate; a positive temperature coefficient heater (PTC) element disposed within the heating layer; and a negative temperature coefficient heater (NTC) element disposed within the heating layer, wherein the PTC element and the NTC element are connected in series.

[0010] The heating layer may include electrodes for providing power, PTC elements may be disposed on the surface of the electrodes, and NTC elements may be disposed on the surface of the PTC elements.

[0011] The heating component may further include a first region based on the current direction, a second region disposed behind the first region, and a third region disposed behind the second region, wherein in the first region, a PTC element is disposed between the first substrate and the second substrate; in the third region, an NTC element is disposed between the first substrate and the second substrate; and in the second region, an electrode electrically connecting the PTC element and the NTC element is disposed between the first substrate and the second substrate.

[0012] An antioxidant film can be formed on the surface of the electrode in the second region.

[0013] The PTC element may include a first PTC element and a second PTC element, and the electrodes may include a first electrode connected to the first PTC element and a second electrode connected to the second PTC element, and the two ends of the NTC element are respectively connected to the first electrode and the second electrode.

[0014] According to this embodiment, a camera device module includes: a first body; a lens module disposed within the first body, the lens module including a lens barrel and a lens disposed within the lens barrel; a substrate module disposed within the first body; and a heating member, one end of the heating member being connected to the surface of the lens and the other end being connected to the substrate module to provide heat to the lens, wherein the heating member includes: a first substrate; a second substrate facing the first substrate; a heating layer disposed between the first substrate and the second substrate; a positive temperature coefficient heater (PTC) element disposed within the heating layer; and a negative temperature coefficient heater (NTC) element disposed within the heating layer, wherein the PTC element and the NTC element are connected in series.

[0015] Beneficial effects

[0016] This embodiment has the advantage of being able to quickly remove frost or ice formed on the lens surface by using heat generated from the heating element.

[0017] In addition, by placing the PTC element and the NTC element together in the heating element, the resistance change caused by operation is canceled out, thereby ensuring the electrical stability of the heating element during operation and improving energy efficiency. Attached Figure Description

[0018] Figure 1 This is a perspective view showing a vehicle according to an embodiment of the present disclosure.

[0019] Figure 2 This is a cross-sectional view showing a camera device module according to an embodiment of the present disclosure.

[0020] Figure 3 This is a conceptual diagram illustrating the electrical structure of a heating component according to an embodiment of the present disclosure.

[0021] Figure 4 It is a graph used to illustrate the process of offsetting resistance changes by using a PTC heater and an NTC heater according to an embodiment of the present disclosure.

[0022] Figure 5 This is a plan view showing the area of ​​the heating member according to an embodiment of the present disclosure.

[0023] Figure 6 It is along Figure 5 The view captured by A-A'.

[0024] Figure 7 This is a plan view showing the area of ​​the heating member according to an embodiment of the present disclosure.

[0025] Figure 8 This is a conceptual diagram illustrating the arrangement of PTC and NTC elements within a heating element according to an embodiment of this disclosure.

[0026] Figure 9 It is along Figure 7 The view captured by B-B'.

[0027] Figure 10 It is along Figure 7 The view captured by the C-C' cutoff.

[0028] Figure 11 It is along Figure 7 The view captured by D-D'. Detailed Implementation

[0029] In the following, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0030] However, the technical concept of this disclosure is not limited to some of the embodiments described, but can be implemented in various different forms, and within the scope of the technical concept of this disclosure, one or more components among the embodiments can be selectively combined or substituted for use.

[0031] Furthermore, unless explicitly and specifically defined and described, the terms (including technical and scientific terms) used in the embodiments of this disclosure may be interpreted in a meaning that would be commonly understood by one of ordinary skill in the art to which this disclosure pertains, and commonly used terms, such as those defined in dictionaries, may be interpreted in the context of the relevant art.

[0032] Furthermore, the terminology used in the embodiments of this disclosure is for describing the embodiments and is not intended to limit the disclosure.

[0033] In this specification, unless otherwise specifically stated in the phrase, the singular may also include the plural, and when described as “at least one of A, B, C (or one or more of them)”, it may include one or more of all combinations that can be combined with A, B, C.

[0034] Furthermore, when describing components of this embodiment of the present disclosure, terms such as first, second, A, B, (a), (b), etc., may be used. These terms are intended only to distinguish components from other components and are not intended to limit the nature, order, or sequence of components.

[0035] In addition, when a component is described as being “connected,” “coupled,” or “linked” to another component, it can include not only cases where the component is directly “connected,” “coupled,” or “linked” to the other component, but also cases where the component is “connected,” “coupled,” or “linked” through other components between the component and the other component.

[0036] Additionally, when described as being formed or positioned "above" or "below" the components, "above" or "below" includes not only cases where two components are in direct contact with each other, but also cases where one or more other components are formed or positioned between the two components. Furthermore, when expressed as "above" or "below," it can include the meaning of a downward or upward direction based on a component.

[0037] In the following text, the term "optical axis direction" is defined as the optical axis direction of the lens. However, "optical axis direction" can also correspond to "vertical direction," "z-axis direction," etc.

[0038] The present disclosure will be described in more detail below with reference to the accompanying drawings.

[0039] Figure 1 This is a perspective view showing a vehicle according to an embodiment of the present disclosure.

[0040] Reference Figure 1 According to embodiments of the present disclosure, the vehicle 1 may include a body 2, a door 3, a glass 4, a headlight 5, a taillight 6, and a camera module 10.

[0041] The body 2 can be an external component of the vehicle 1. The body 2 can have various forms, such as a frame type or a monocoque type. One or more doors 3 can be coupled to the side of the body 2. In addition, the glass 4 can be coupled to the front and rear of the upper part of the body 2 (the part forming the pillar) and the doors 3. The headlights 5 can be mounted on the front of the lower part of the body 2. The taillights 6 can be mounted on the rear of the lower part of the body 2.

[0042] The camera module 10 can be installed on the side of the vehicle body 2 or on the front door of one or more doors 3. The camera module 10 can be installed on the front of the glass 4 coupled to the door 3. In other words, in the vehicle 1 of this embodiment, the camera module 10 can replace the side mirror.

[0043] The camera module 10 can capture images of the two rear sides of the vehicle. The images captured by the camera module 10 can be electrically connected to a display unit (not shown) via an electronic control unit (ECU). Therefore, the images captured by the camera module 10 can be controlled by the electronic control unit (ECU) and played on the display unit.

[0044] An interior space for the driver can be formed inside the vehicle body 2. A display unit can be installed inside the vehicle body 2. The display unit can output images captured by the camera module 10. The display unit can be installed on a dashboard (not shown) inside the vehicle body 2.

[0045] The installation method of the camera module 10 in the vehicle 1 described above is exemplary, and the camera module 10 can be used in one or more of the front camera, side camera, rear camera, and black box of the vehicle 1.

[0046] In the following description, the camera device module according to this embodiment will be described with reference to the accompanying drawings.

[0047] Figure 2 This is a cross-sectional view showing a camera device module according to an embodiment of the present disclosure.

[0048] Reference Figure 2 According to embodiments of the present disclosure, the camera device module 10 may include a first body 100, a second body 200, a lens module 300, a lens holder 400, a substrate module 500, and a heating member 700.

[0049] The first body 100 can form the appearance of the camera device module 10. The first body 100 can be referred to as the front body, the upper housing, or the first housing. The interior of the first body 100 can form a space to house the lens module 300, the lens holder 400, and the substrate module 500.

[0050] The first body 100 may include a body portion 110 and a protrusion 120. The body portion 110 and the protrusion 120 may be integrally formed.

[0051] The body portion 110 may be formed of a metallic material. The body portion 110 may be disposed on the second body 200. The body portion 110 may be coupled to the second body 200. The lower end of the body portion 110 may be fixed to the second body 200. The body portion 110 may be coupled to the second body 200 by welding. Alternatively, the body portion 110 may be coupled to the second body 200 by adhesive bonding or fusion welding.

[0052] The body portion 110 can be formed as a square with an open lower portion. In this case, the corners of the body portion 110 can be formed as rounded. The body portion 110 may include an upper plate 112 and a first side plate 114 extending downward from the edge of the upper plate 112. The upper plate 112 can be formed as a square. The upper plate 112 can extend outward from the outer periphery of the lower end of the protrusion 120. The first side plate 114 can extend downward from the outer edge of the upper plate 112. Multiple first side plates 114 can be provided. The first side plate 114 may include four side plates. The first side plate 114 can be formed in the shape of a square plate. For example, the first side plate 114 may include a first-1 side plate and a first-2 side plate, a first-3 side plate disposed opposite to the first-1 side plate, and a first-4 side plate disposed opposite to the first-2 side plate. The first side plate 114 may include first-1 corner portions to first-4 corner portions respectively disposed between the first-1 side plate 1 to the first-4 side plates. Each of the first-1 corners to the first-4 corners may include a circular shape in at least a portion thereof.

[0053] A space separate from other areas can be formed inside the body portion 110. The space has an open lower portion, and its upper portion can be covered by the protrusion 120 and the lower surface of the lens module 300.

[0054] The first body 100 may include a protrusion 120. The protrusion 120 may be formed of a metallic material. The protrusion 120 may have a circular cross-sectional shape. The protrusion 120 may be disposed on the body portion 110. The protrusion 120 may extend upward from the upper surface of the body portion 110. The protrusion 120 may be integrally formed with the body portion 110. As a variation, the protrusion 120 may be coupled to the body portion 110. In this case, the protrusion 120 may be fixed to the body portion 110 by adhesive. The protrusion 120 may internally accommodate a lens module 300. A space may be formed at the center of the protrusion 120 to which the lens module 300 is coupled. The lens module 300 may be disposed within the space within the protrusion 120.

[0055] The camera module 10 may include a second body 200. The second body 200 may be referred to as a rear body, lower housing, second housing, or rear cover. The second body 200 may be formed as a square with an open upper portion. The second body 200 may be formed of a metallic material. The second body 200 may be disposed below the first body 100. The second body 200 may be coupled to the first body 100. The second body 200 may form an internal space by coupling with the first body 100. The second body 200 may include a space portion with an open upper surface.

[0056] The second body 200 may include a lower plate 220. The lower plate 220 may face the upper plate 114 of the first body 100 in the optical axis direction. The lower plate 220 may be spaced apart from the upper plate 114 of the first body 110 in the optical axis direction. The lower plate 220 may be parallel to the upper plate 114 of the first body 100. The lower plate 220 may be formed as a square. In this case, the corners of the lower plate 220 may include a circular shape in at least a portion.

[0057] The second body 200 may include a second side plate 210. The second side plate 210 may extend from the lower plate 220. The second side plate 210 may extend upward from the outer edge of the lower plate 220. A shielding member (not shown) may be disposed on the second side plate 210. The shielding member may be in surface contact with the inner surface of the second side plate 210. The upper end of the second side plate 210 may be coupled to the first body 100. The inner surface of the second side plate 210 may be configured to surround the outer surface of the first side plate 114. The inner surface of the second side plate 210 and the outer surface of the first side plate 114 may be coupled to each other by at least one of welding, bonding, or fusion.

[0058] The second body 200 may include a connector lead-out portion 290. The connector lead-out portion 290 may have a shape that protrudes downward from the lower surface of the lower plate 220. The connector 490, which will be described below, may be disposed inside the connector lead-out portion 290. The connector lead-out portion 290 may be formed of a metallic material. The interior of the connector lead-out portion 290 may have a hollow tube shape.

[0059] The camera module 10 may include a lens module 300. The lens module 300 may be coupled to the first body 100. The lens module 300 may be coupled to a hole in the protrusion 120. The lens module 300 may be configured such that at least a portion is disposed inside the protrusion 120, and the remainder protrudes upward from the first body 100.

[0060] The lens module 300 may include a lens barrel 310 and one or more lenses 330 housed within the lens barrel 310. The lenses 330 may be positioned in the optical axis direction facing an image sensor located within the substrate module 500, which will be described below. The lenses 330 may be aligned with the image sensor in the optical axis. Multiple lenses 330 may be provided and arranged to be spaced apart from each other in the optical axis direction within the lens barrel 310. Of the multiple lenses 330, the outermost lens may protrude upwards from the imaging device module 10.

[0061] The lens barrel 310 may internally include a space with an upper opening and a lower opening. A lens 330 may be disposed within the space of the lens barrel 310. The lens barrel 310 may have a circular cross-sectional shape. The lens barrel 310 may be made of a metallic material.

[0062] Lens module 300 may include a retainer 380. The retainer 380 may be coupled to the outer surface of lens barrel 310. The retainer 380 may be threadedly coupled to lens barrel 310. Alternatively, the retainer 380 and lens barrel 310 may be coupled to each other via epoxy resin. The retainer 380 may be attached to the upper end of lens barrel 310. At least a portion of the retainer 380 may be disposed within the first body 100. The incident surface of the outermost lens in the lens may protrude upwards from the upper surface of the retainer 380.

[0063] The coupling structure of the lens barrel 310 and the retainer 380 described above is exemplary, and the camera device module 10 can be implemented as an integral structure in which the lens barrel 310 and the retainer 380 are integrated.

[0064] The retainer 380 may have an annular cross-section. The retainer 380 may be configured such that at least a portion covers the edge of the outermost lens. The retainer 380 may be configured to wrap around the edge of the outermost lens. The retainer 380 may be configured to cover the edge of the incident surface of the outermost lens. The retainer 380 may contact a portion of the incident surface of the outermost lens.

[0065] The retainer 380 may include a first region 382 and a second region 384, in which the lower surface of the first region 382 supports the incident surface of the outermost lens, and the second region 384 extends downward from the edge of the first region 382. The second region 384 may be disposed between the lens barrel 310 and the first body 100. The first region 382 and the second region 384 may be disposed perpendicular to each other.

[0066] The camera module 10 may include a lens holder 400. The lens holder 400 may be disposed between the first body 100 and the lens barrel 310. The lens holder 400 may be configured to cover the outer surface of the lens barrel 310. The lens holder 400 may be formed as a cylinder having a hollow portion extending from the upper surface to the lower surface. Threads or threaded grooves may be formed on the inner surface of the lens holder 400. Threaded grooves or threads may be formed on the outer surface of the lens barrel 310 facing the inner surface of the lens holder 400. The lens barrel 310 may be threadedly coupled to the lens holder 400.

[0067] A substrate coupling portion may be formed on the lower surface of the lens holder 400, to which the first substrate 510 of the substrate module 500 described below is coupled. The substrate coupling portion may have a groove shape that is recessed upward from other areas.

[0068] The lens holder 400 can be omitted. In this case, the substrate module 500 can be coupled to the space within the first body 100.

[0069] The camera device module 10 may include a substrate module 500. The substrate module 500 may be disposed within the space of the camera device module 10. The substrate module 500 may be disposed between the first body 100 and the second body 200.

[0070] The aforementioned substrate module 500 may include a first substrate 510, a second substrate 520, and a connecting substrate (not shown).

[0071] The first substrate 510 may be a printed circuit board (PCB). An image sensor may be disposed on the upper surface of the first substrate 510. The image sensor may be disposed on the first substrate 510 and positioned so that it faces the lens within the lens module 300 in the optical axis direction. The first substrate 510 may be disposed within the substrate coupling portion of the lens holder 400.

[0072] The second substrate 520 may be a printed circuit board (PCB). The second substrate 520 may be positioned spaced apart from the first substrate 510 in the optical axis direction. The second substrate 520 may be disposed below the first substrate 510. A connector (not shown) may be coupled to the lower surface of the second substrate 520. The upper end of the connector may be soldered to the lower surface of the second substrate 520.

[0073] Terminal 525 may be disposed on the lower surface of the second substrate 520. Terminal 525 may be electrically and physically connected to the lower end of the heating element 700, which will be described below.

[0074] The second substrate 520 can be electrically connected to the first substrate 510. The second substrate 520 and the first substrate 510 can be electrically connected via a connecting substrate. The connecting substrate can be a flexible printed circuit board (FPCB). The upper and lower ends of the connecting substrate can be coupled to the first substrate 510 and the second substrate 520 respectively, thereby electrically connecting the first substrate 510 and the second substrate 520.

[0075] The substrate module 500 may further include a shield (not shown) disposed between the first substrate 510 and the second substrate 520. The shield allows the first substrate 510 and the second substrate 520 to be separated in the optical axis direction.

[0076] The following will describe the heating structure of the lens according to an embodiment of the present disclosure.

[0077] Figure 3 This is a conceptual diagram illustrating the electrical structure of a heating element according to an embodiment of the present disclosure, and Figure 4 It is a graph used to illustrate the process of offsetting resistance changes by using a PTC heater and an NTC heater according to an embodiment of the present disclosure.

[0078] Reference Figures 2 to 4 The camera module 10 may include a heating element 700. The heating element 700 can provide heat to the surface of the lens. The heating element 700 can provide heat to the surface of the outermost lens among the plurality of lenses 330. Therefore, frost formed on the surface of the lens can be removed. One end of the heating element 700 can be connected to the surface of the lens, and the other end of the heating element can be connected to the substrate module 500.

[0079] Specifically, the outermost lens disposed on the lens barrel 310 may include an incident surface 331 into which light is incident, an exit surface 333 opposite to the incident surface 331, and a connecting surface 335 connecting the incident surface 331 and the exit surface 333, in which incident light is emitted toward the image sensor. The connecting surface 335 may form the lower surface of the lens. The connecting surface 335 may form the side surface of the lens. One end of the heating member 700 may be coupled to the connecting surface 335.

[0080] The connecting surface 335 may include a plurality of surfaces arranged in a stepped manner, spaced apart from each other in the optical axis direction. The plurality of surfaces may include a first surface and a second surface disposed within the first surface. The plurality of surfaces may include a first side surface connecting the first and second surfaces. The plurality of surfaces may include a second side surface disposed outside the first surface. The first surface may be disposed above the second surface. One end of the heating member 700 may be coupled to the first surface. One end of the heating member 700 may be coupled to the second side surface.

[0081] The heating element 700 can be in the shape of a film. The heating element 700 can be a substrate on which a circuit pattern is formed. The heating element 700 can be a flexible printed circuit board (FPCB).

[0082] The heating member 700 may include an upper portion 710, a lower portion 720, and a connecting portion 730. The upper portion 710 is disposed at the upper end of the heating member 700 and can be coupled to the surface of the lens. The upper portion 710 has an annular cross-section and can be coupled to the connecting surface 335. The upper portion 710 can generate heat by providing electricity. The upper portion 710 may have a circular shape corresponding to the shape of the lens or lens barrel 310.

[0083] The lower portion 720 is disposed at the lower end of the heating member 700 and can be coupled to the substrate module 500. The lower portion 720 can be coupled to the lower surface of the second substrate 520 of the substrate module 500. The lower portion 720 can be coupled to a terminal 525 disposed on the lower surface of the second substrate 520. Therefore, power can be supplied from the substrate module 500 to the heating member 700, or drive signals can be sent and received.

[0084] The connecting portion 730 can connect the upper portion 710 and the lower portion 720. The connecting portion 730 may include a region that is bent at least once. At least a portion of the connecting portion 730 may be disposed between the outer surface of the lens barrel 310 and the inner surface of the first body 100. A hole (not shown) may be formed in the lens barrel 310 such that the connecting portion 730 passes through the hole.

[0085] The heating element 700 according to embodiments of this disclosure may include a PTC heater (positive temperature coefficient heater) and an NTC heater (negative temperature coefficient heater). The heating element 700 may include a PTC element 800 for implementing the PTC heater and an NTC element 900 for implementing the NTC heater.

[0086] like Figure 4 As shown in the upper left curve, in the case of PTC element 800, the resistance increases with increasing heating temperature. Therefore, when the heating element 700 is driven solely by PTC element 800 at low temperatures, PTC element 800 or other electronic components may be affected by overcurrent caused by the initial low resistance, which has disadvantages in terms of electrical stability and energy efficiency.

[0087] like Figure 4 As shown in the lower left curve, because the resistance of the NTC element 900 decreases as the heating temperature increases, therefore... Figure 4As shown in the right curve, the heating element 700 according to the embodiment of the present disclosure has the following advantages: it is possible to form a temperature coefficient of resistance (TCR) that converges to almost zero within the operating temperature range of the heating element 700, because the increase in resistance caused by the driving of the PTC element 800 in the circuit region of the heating element 700 is offset by the decrease in resistance caused by the driving of the NTC element 900.

[0088] However, as Figure 4 As shown in the upper left and right curves, even within the circuit of the heating element 700, the insulation effect caused by the rapid exponential increase in resistance during the phase transition interval of the PTC element 800 can be maintained.

[0089] like Figure 3 As shown, the PTC element 800 and NTC element 900 can be connected in series within the heating element 700. The PTC element 800 and NTC element 900 can be arranged sequentially based on the flow of power supplied from the power supply unit 1000.

[0090] Figure 5 This is a plan view showing the area of ​​the heating member according to an embodiment of the present disclosure, and Figure 6 It is along Figure 5 The view captured by A-A'.

[0091] Figure 5 and Figure 6 This is an example intended to illustrate the arrangement structure of the PTC element 800 and NTC element 900 within a heating member 700 according to an embodiment of the present disclosure.

[0092] Reference Figure 5 and Figure 6 The heating member 700 may include an upper portion 710 and a connecting portion 730. The heating member 700 may include a plurality of electrodes 772 and 774, and the plurality of electrodes 772 and 774 may be disposed along the upper portion 710 and the connecting portion 730. In the upper portion 710, the plurality of electrodes 772 and 774 may be disposed at intervals in the radial direction. In the connecting portion 730, the plurality of electrodes 772 and 774 may be respectively connected to the plurality of electrodes 772 and 774 in the upper portion 710.

[0093] The plurality of electrodes 772, 774 may include a first electrode 772 and a second electrode 774, and the polarity of the first electrode 772 and the polarity of the second electrode 774 may be opposite to each other.

[0094] PTC element 800 and NTC element 900 can be disposed on the upper part 710.

[0095] In detail, such as Figure 6As shown, the heating member 700 may include a first substrate 712, a second substrate 714, and a heating layer 716.

[0096] The first substrate 712 and the second substrate 714 are each formed in a film shape, and a heating layer 716 can be formed in the space between them. The first substrate 712 can be positioned relatively closer to the lens surface than the second substrate 714. Therefore, the first substrate 712 can be referred to as the upper substrate, and the second substrate 714 can be referred to as the lower substrate.

[0097] The first substrate 712 and the second substrate 714 can be made of different materials. For example, the first substrate 712 can be made of polyimide, and the second substrate 714 can be made of PET.

[0098] The thickness of the first substrate 712 can be less than the thickness of the second substrate 714 relative to the optical axis. Therefore, the thickness of the first substrate 712, which is disposed relatively close to the lens surface, is formed to be thin, allowing heat generated from the heating layer 716 to be efficiently transferred to the lens surface. Additionally, heat loss can be prevented by the second substrate 714.

[0099] The thermal conductivity of the first substrate 712 can be greater than that of the second substrate 714. Therefore, heat can be concentrated onto the lens through the first substrate 712.

[0100] A heating layer 716 may be disposed between a first substrate 712 and a second substrate 714. The heating layer 716 may include electrodes 772 and 774, a PTC element 800, and an NTC element 900. The heating layer 716 may include a polymer encapsulating the PTC element 800 and the NTC element 900.

[0101] Electrodes 772 and 774 can be disposed on the surface of the heating layer 716. Electrodes 772 and 774 can be disposed on the surface of the polymer. Electrodes 772 and 774 can be disposed on the surface of the heating layer 716 facing the second substrate 714. Electrodes 772 and 774 can be disposed on the surface of the second substrate 714.

[0102] Electrodes 772 and 774 include a first electrode 772 and a second electrode 774 with different polarities, and can provide power to PTC element 800 and NTC element 900.

[0103] The PTC element 800 can be disposed on the surface of the electrodes 772 and 774. The PTC element 800 can be disposed to enclose the surface of the electrodes 772 and 774. The PTC element 800 is disposed within the polymer and can generate heat by means of a change in resistance caused by the power supplied from the electrodes 772 and 774.

[0104] The NTC element 900 can be disposed between the first substrate 712 and the second substrate 714. The NTC element 900 can also be disposed on the surface of the PTC element 800. Based on the flow of power supplied from the electrodes 772 and 774, the NTC element 900 can be disposed behind the PTC element 800. Resistance changes may occur due to the power supplied through the electrodes 772 and 774 and the PTC element 800, thereby generating heat.

[0105] Meanwhile, in this embodiment, as an example, PTC element 800 is disposed on the surface of electrodes 772 and 774, and NTC element 900 is disposed on the surface of PTC element 800; however, this is not limited to this, and NTC element 900 may be disposed on the surface of electrodes 772 and 774, and PTC element 800 may be disposed on the surface of NTC element 900.

[0106] Figure 7 This is a plan view showing the area of ​​the heating member according to an embodiment of the present disclosure. Figure 8 This is a conceptual diagram illustrating the arrangement of PTC and NTC elements within a heating component according to an embodiment of this disclosure. Figure 9 It is along Figure 7 The view captured by B-B'. Figure 10 It is along Figure 7 The view captured by C-C', and Figure 11 It is along Figure 7 The view captured by D-D'.

[0107] Figures 7 to 11 This is another example of the arrangement structure of the PTC element 800 and NTC element 900 within the heating member 700 according to an embodiment of the present disclosure.

[0108] Reference Figures 7 to 11 The heating member 700 may include an upper portion 710 and a connecting portion 730. The heating member 700 may include a plurality of electrodes 772 and 774, and the plurality of electrodes 772 and 774 may be disposed along the upper portion 710 and the connecting portion 730. In the upper portion 710, the plurality of electrodes 772 and 774 may be disposed at intervals in the radial direction. In the connecting portion 730, the plurality of electrodes 772 and 774 may be respectively connected to the plurality of electrodes 772 and 774 in the upper portion 710.

[0109] The plurality of electrodes 772, 774 may include a first electrode 772 and a second electrode 774, and the polarity of the first electrode 772 and the polarity of the second electrode 774 may be opposite to each other.

[0110] In the heating element 700, the PTC element 800 and the NTC element 900 can be arranged sequentially along the current direction. For example, the PTC element 800 can be provided in the connection portion 730, and the NTC element 900 can be provided in the upper portion 710.

[0111] As another example, PTC element 800 and NTC element 900 may be disposed within the upper portion 710 and may be separated from each other based on electrodes 772 and 774.

[0112] More specifically, the heating element 700 may include a first region where a PTC element 800 is disposed between a first substrate 712 and a second substrate 714, a second region where electrodes 772 and 774 are disposed between the first substrate 712 and the second substrate 714, and a third region where an NTC element 900 is disposed between the first substrate 712 and the second substrate 714. The second region may be disposed between the first region and the third region, such that the PTC element 800 and the NTC element 900 are electrically connected through electrodes 772 and 774, but may be separated from each other. The first region, the second region, and the third region may be arranged along the direction of current flow.

[0113] The first area can be located within the connecting part 730. For example... Figure 9 As shown, in the first region, the heating member 700 may have a heating layer 780 formed by a PTC element 800 between a first substrate 712 and a second substrate 714, and the heating layer 780 may include a polymer encapsulating the PTC element 800. The PTC element 800 may be disposed on the surface of the second substrate 714. The two ends of the PTC element 800 may be connected to electrodes 772 and 774, respectively. Electrodes 772 and 774 may be divided into multiple regions based on the PTC element 800. The PTC element 800 may include a first PTC element 810 connected to the first electrode 772 and a second PTC element 820 connected to the second electrode 774. By providing power from electrodes 772 and 774, the heating layer 780 may generate heat due to changes in the resistance of the PTC element 800.

[0114] The second region can be located behind the first region. The second region can also be located in the connection area between the upper portion 710 and the connecting portion 730. For example... Figure 10As shown, the electrodes 772 and 774 of the heating member 700 can be disposed in a second region between the first substrate 712 and the second substrate 714. In this case, the region disposed in the second region between the first substrate 712 and the second substrate 714 can be referred to as the electrode layer 790. In the region of the electrode layer 790 other than the region where the electrodes 772 and 774 are disposed, an adhesive material for coupling the first substrate 712 and the second substrate 714 can be disposed, or air can be included. When air is included in the electrode layer 790, an antioxidant film 778 for preventing oxidation can be formed on the surface of the electrodes 772 and 774.

[0115] The third area can be located behind the second area. The third area can also be located on the upper portion 710. For example... Figure 11 As shown, in the third region, the heating layer 780 can be formed by an NTC element 900 between the first substrate 712 and the second substrate 714 of the heating member 700, and the heating layer 780 may include a polymer encapsulating the NTC element 900. The NTC element 900 may be disposed on the surface of the second substrate 714. One end of the NTC element 900 may be connected to electrodes 772, 774. The NTC element 900 may include a first NTC element 910 connected to the first electrode 772 and a second NTC element 920 connected to the second electrode 774. One end of the first NTC element 910 and one end of the second NTC element 920 are respectively connected to electrodes 772, 774, and the other ends of the first NTC element 910 and the second NTC element 920 may be interconnected at the end of the upper portion 710. Therefore, the power supplied through the first electrode 772 can be supplied in the order of the first PTC element 810, the first electrode 772, the NTC element 900, the second electrode 774, and the second PTC element 820. In this case, the third region may generate heat due to the resistance change of the NTC element 900.

[0116] At the same time, although an example is described where the PTC element is set in the first region and the NTC element is set in the third region, this is not limited to this, and of course, the NTC element can be set in the first region and the PTC element can be set in the third region.

[0117] According to the above structure, by placing the PTC element and the NTC element together inside the heating element, the resistance change caused by operation is canceled out, which has the advantages of improving energy efficiency and ensuring electrical stability due to the operation of the heating element.

[0118] In the foregoing, although all components constituting embodiments of this disclosure have been described as operating in combination or combination, this disclosure is not necessarily limited to such embodiments. In other words, within the scope of the purpose of this disclosure, all components may be selectively combined in one or more ways to operate. Furthermore, unless specifically stated otherwise, terms such as “comprising,” “constituting,” or “having” described above may mean that the associated component may be inherent; therefore, they should be interpreted as allowing the inclusion of additional components rather than excluding other components. Unless otherwise defined, all terms, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. Unless expressly defined in this disclosure, commonly used terms, such as predefined terms, should be interpreted according to their meaning in the context of the relevant art and should not be interpreted in an idealized or overly formal sense.

[0119] The foregoing description is merely an illustrative account of the technical concept of this disclosure, and those skilled in the art will be able to make various modifications and variations within the scope of the essential characteristics of this disclosure. Therefore, the embodiments disclosed in this disclosure are intended to illustrate the technical concept of this disclosure, not to limit it, and the scope of the technical concept of this disclosure is not limited by these embodiments. The scope of protection of this disclosure should be interpreted by the appended claims, and all technical concepts within the equivalent scope should be interpreted as being included within the scope of the rights of this disclosure.

Claims

1. A heating element, comprising: First substrate; A second substrate facing the first substrate; A heating layer disposed between the first substrate and the second substrate; Positive temperature coefficient heater (PTC) element disposed within the heating layer; as well as A negative temperature coefficient heater (NTC) element is installed within the heating layer. The PTC element and the NTC element are connected in series.

2. The heating component according to claim 1, in, The heating layer includes electrodes for providing electricity. The PTC element is disposed on the surface of the electrode, and The NTC element is configured to surround the PTC element.

3. The heating component according to claim 1, in, The heating layer includes: A first region along the direction of the current, a second region adjacent to the first region, and a third region adjacent to the second region. The PTC element is disposed in the first region between the first substrate and the second substrate. The NTC element is disposed in the third region between the first substrate and the second substrate, and The electrode that electrically connects the PTC element and the NTC element is disposed in the second region between the first substrate and the second substrate.

4. The heating component according to claim 3, in, An antioxidant film is formed on the surface of the electrode in the second region.

5. The heating component according to claim 3, in, The PTC element includes a first PTC element and a second PTC element. The electrode includes a first electrode connected to the first PTC element and a second electrode connected to the second PTC element. The two ends of the NTC element are connected to the first electrode and the second electrode.

6. A camera device module, comprising: first ontology; A lens module disposed within the first body, the lens module comprising a lens barrel and a lens disposed within the lens barrel; A baseboard module disposed within the first body; as well as A heating element, one end of which is connected to the surface of the lens and the other end of which is connected to the substrate module to provide heat to the lens; The heating component includes: First substrate; A second substrate facing the first substrate; A heating layer disposed between the first substrate and the second substrate; A positive temperature coefficient heater (PTC) element disposed within the heating layer; and A negative temperature coefficient heater (NTC) element is disposed within the heating layer, and The PTC element and the NTC element are connected in series.

7. The camera device module according to claim 6, in, The heating layer includes electrodes for providing electricity. The PTC element is disposed on the surface of the electrode, and The NTC element is configured to surround the PTC element.

8. The camera device module according to claim 6, in, The heating component includes: A first region along the direction of the current, a second region adjacent to the first region, and a third region adjacent to the second region. The PTC element is disposed in the first region between the first substrate and the second substrate. The NTC element is disposed in the third region between the first substrate and the second substrate, and The electrode that electrically connects the PTC element and the NTC element is disposed in the second region between the first substrate and the second substrate.

9. The camera device module according to claim 8, in, The heating component includes: The upper portion of the surface coupled to the lens. Coupled to the lower portion of the substrate module, and A connecting portion that connects the upper part and the lower part. The first region is disposed in the connecting portion, and The third region is located in the upper part.

10. The camera device module according to claim 8, in, An antioxidant film is formed on the surface of the electrode in the second region.

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