Phototherapy device and method of driving the same

Abstract

The present disclosure provides a phototherapy device and a driving method thereof. The phototherapy device includes a substrate, a light emitting unit, and a conductive layer. The substrate has a first surface and a second surface opposite to each other. The light emitting unit is disposed on the second surface. The conductive layer is disposed on the first surface. The conductive layer includes a conductive wire and a temperature sensing element electrically insulated from each other, and the conductive wire is electrically connected to the light emitting unit. The light emitting unit has a light emitting wavelength band of 450 nm to 900 nm.

Description

Technical Field

[0001] This disclosure relates to a phototherapy device and its driving method, and more particularly to a phototherapy device and its driving method capable of real-time temperature sensing. Background Technology

[0002] Electronic devices are widely used in various fields such as medicine, beauty, and physiological testing. With the rapid development of electronic devices, they are being developed towards thinner and lighter designs, thus placing higher demands on their reliability and quality. Summary of the Invention

[0003] According to embodiments disclosed herein, a phototherapy device includes a substrate, a light-emitting unit, and a conductive layer. The substrate has a first surface and a second surface opposite to each other. The light-emitting unit is disposed on the second surface. The conductive layer is disposed on the first surface. The conductive layer includes electrically insulated conductive wires and a temperature sensing element, the conductive wires being electrically connected to the light-emitting unit. The light-emitting unit emits light in the wavelength range of 450 nm to 900 nm.

[0004] According to embodiments disclosed herein, a driving method for a phototherapy device includes the following steps: providing a phototherapy substrate, including a plurality of light-emitting units and a temperature sensing element, wherein the temperature sensing element is electrically insulated from the plurality of light-emitting units; providing a control unit and a temperature measurement system, wherein the control unit is electrically connected to the plurality of light-emitting units, and the temperature measurement system is electrically connected to both the temperature sensing element and the control unit; activating the plurality of light-emitting units for phototherapy, and using the temperature measurement system to detect changes in conductivity or resistance of the temperature sensing element to determine the current temperature; and causing the control unit to operate the plurality of light-emitting units in the phototherapy substrate according to the current temperature. The emission wavelength of the plurality of light-emitting units is from 450 nm to 900 nm. Attached Figure Description

[0005] Figure 1 This is a block diagram of the phototherapy device according to the first embodiment of this disclosure;

[0006] Figure 2 for Figure 1 A cross-sectional schematic diagram of the phototherapy substrate in a phototherapy device;

[0007] Figure 3A for Figure 2 A bottom view schematic diagram of the phototherapy substrate;

[0008] Figure 3B for Figure 3A A magnified view of region R1 on the phototherapy substrate;

[0009] Figure 4 for Figure 1 A flowchart of the driving method for a phototherapy device;

[0010] Figure 5This is a bottom view schematic diagram of the phototherapy device according to the second embodiment of this disclosure;

[0011] Figure 6 This is a bottom view schematic diagram of the phototherapy device according to the third embodiment of this disclosure;

[0012] Figure 7 This is a bottom view schematic diagram of the phototherapy device according to the fourth embodiment of this disclosure;

[0013] Figure 8A This is a bottom view schematic diagram of the phototherapy device according to the fifth embodiment of this disclosure;

[0014] Figure 8B for Figure 8A An enlarged view of region R2 of the phototherapy substrate in the phototherapy device.

[0015] Explanation of icon numbers

[0016] 10, 10a, 10b, 10c, 10d: Phototherapy device

[0017] 100: Phototherapy substrate

[0018] 110: Substrate

[0019] 111: First Page

[0020] 112: Second page

[0021] 120: Light-emitting unit

[0022] 130: Conductive wire

[0023] 140, 140a, 140b, 140c, 140d: Temperature sensing elements

[0024] 150: Another conductive wire

[0025] 160: Conductive connector

[0026] 170: Packaged Components

[0027] 180: Attachment element

[0028] 200: Control Unit

[0029] 300: Temperature Measurement System

[0030] 400: Phototherapy drugs

[0031] CL: Conductive layer

[0032] CL1, CL2, CL3: Connecting wires

[0033] CP: Conductive component

[0034] IL1, IL2: Insulating layer

[0035] P1, P2: Connecting pads

[0036] R1, R2: Regions

[0037] Z: Normal direction Detailed Implementation

[0038] This disclosure can be understood by referring to the following detailed description in conjunction with the accompanying drawings. It should be noted that, for ease of understanding and for the sake of brevity, many of the drawings in this disclosure depict only a portion of the electronic device, and certain components in the drawings are not drawn to scale. Furthermore, the number and dimensions of the components in the drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure.

[0039] In the following description and claims, the words “containing” and “including” are open-ended terms, and therefore should be interpreted as “containing but not limited to…”.

[0040] It should be understood that when an element or membrane is referred to as being "on" or "connected" to another element or membrane, it can be directly on or directly connected to that other element or membrane, or there may be an inserted element or membrane between them (indirect cases). Conversely, when an element is referred to as being "directly" on or "directly connected" to another element or membrane, there may be no inserted element or membrane between them.

[0041] Although the terms "first," "second," "third," etc., can be used to describe multiple components, the components are not limited to these terms. These terms are used only to distinguish a single component from other components in the specification. The same terms may not be used in the claims, but rather replaced by "first," "second," "third," etc., according to the order in which the elements are declared in the claims. Therefore, in the following description, a first component may be a second component in the claims.

[0042] In this text, the terms "about," "approximately," "substantively," and "roughly" typically indicate that a given value or range is within 10%, 5%, 3%, 2%, 1%, or 0.5%. The given quantity is an approximate quantity; that is, even without specific mention of "about," "approximately," "substantively," or "roughly," the meaning of "about," "approximately," "substantively," or "roughly" can still be implied.

[0043] In some embodiments disclosed herein, terms such as "connection" and "interconnection," unless specifically defined, may refer to two structures being in direct contact, or to two structures not being in direct contact, wherein another structure is disposed between the two structures. Furthermore, these terms regarding engagement and connection may also include situations where both structures are movable or both structures are fixed. In addition, the term "coupled" encompasses any direct and indirect connection means.

[0044] In some embodiments disclosed herein, an optical microscope (OM), a scanning electron microscope (SEM), an alpha-step thickness gauge, an ellipsometry, or other suitable methods can be used to measure the area, width, thickness, or height of each element, or the distance or spacing between elements. More specifically, according to some embodiments, a scanning electron microscope can be used to obtain a cross-sectional image containing the elements to be measured, and to measure the area, width, thickness, or height of each element, or the distance or spacing between elements.

[0045] The phototherapy device disclosed herein can be applied to electronic devices, which may include display devices, light-emitting devices, backlight devices, virtual reality devices, augmented reality (AR) devices, antenna devices, sensing devices, splicing devices, or any combination thereof, but are not limited thereto. The display device may be a non-self-emissive display or a self-emissive display, and may be a color display or a monochrome display, depending on the requirements. The antenna device may be a liquid crystal type antenna device or a non-liquid crystal type antenna device; the sensing device may be a sensing device that senses capacitance, light, heat, or ultrasound; and the splicing device may be a display splicing device or an antenna splicing device, but is not limited thereto. Electronic units in the electronic device may include passive and active components, such as capacitors, resistors, inductors, diodes, transistors, etc. Diodes may include light-emitting diodes (LEDs) or photodiodes. Light-emitting diodes (LEDs) may include, for example, organic light-emitting diodes (OLEDs), mini LEDs, micro LEDs, or quantum dot LEDs, but are not limited thereto. Transistors may include, for example, top-gate thin-film transistors, bottom-gate thin-film transistors, or dual-gate thin-film transistors, but are not limited thereto. Electronic devices may also include fluorescent materials, phosphorescent materials, quantum dot (QD) materials, or other suitable materials as needed, but are not limited thereto. Electronic devices may have peripheral systems such as drive systems, control systems, light source systems, etc., to support display devices, antenna devices, wearable devices (e.g., augmented reality or virtual reality devices), automotive devices (e.g., automotive windshields), or splicing devices. It should be noted that electronic devices can be any combination of the foregoing, but are not limited thereto. The following uses a phototherapy device as an example to illustrate the contents of this disclosure, but this disclosure is not limited thereto.

[0046] It should be understood that the features in the following embodiments can be replaced, recombined, or mixed to complete other embodiments without departing from the spirit of this disclosure. Features between embodiments can be arbitrarily mixed and combined as long as they do not violate the spirit of the invention or conflict with it.

[0047] Reference will now be made in detail to the exemplary embodiments disclosed herein, examples of which are illustrated in the accompanying drawings. Wherever possible, the same element symbols are used in the drawings and description to denote the same or similar parts.

[0048] Figure 1 This is a block diagram of the phototherapy device according to the first embodiment of this disclosure. Figure 2 for Figure 1 A cross-sectional schematic diagram of the phototherapy substrate in a phototherapy device. Figure 3A for Figure 2 A bottom view of the phototherapy substrate. Figure 3B for Figure 3A An enlarged view of region R1 on the phototherapy substrate. For clarity and ease of explanation, the accompanying diagram is shown. Figure 3A Several components in the phototherapy substrate (such as light-emitting unit 120, another conductive line 150, conductive connector 160, encapsulation element 170, and attachment element 180, etc.) are omitted.

[0049] Please refer to Figure 1 , Figure 2 , Figure 3A as well as Figure 3B The phototherapy device 10 of this embodiment includes a phototherapy substrate 100, a control unit 200, and a temperature measurement system 300. The phototherapy substrate 100 includes a substrate 110, a light-emitting unit 120, a conductive layer CL, a pad P1, a pad P2, an insulating layer IL1, another conductive wire 150, a conductive connector 160, an insulating layer IL2, an encapsulation element 170, and an attachment element 180, but is not limited thereto.

[0050] Specifically, the substrate 110 has a first surface 111 and a second surface 112 facing each other. The light-emitting unit 120 is disposed on the second surface 112, and the conductive layer CL is disposed on the first surface 111. The conductive layer CL includes conductive lines 130 that are electrically insulated from each other and a temperature sensing element 140. The conductive lines 130 are electrically connected to the light-emitting unit 120. In this embodiment, the substrate 110 may include a rigid substrate, a flexible substrate, or a combination thereof. For example, the material of the substrate 110 may include glass, quartz, sapphire, ceramic, polycarbonate (PC), polyimide (PI), polyethylene terephthalate (PET), other suitable substrates, or combinations thereof, but is not limited thereto.

[0051] The conductive wire 130 can be electrically connected to the light-emitting unit 120 and the control unit 200 respectively.

[0052] like Figure 3A As shown, pad P1 is disposed on the first surface 111, and pad P1 can electrically connect connecting line CL1 and conductive line 130 respectively. Thus, conductive line 130 can be electrically connected to control unit 200 through pad P1 and connecting line CL1.

[0053] In this embodiment, the material of the temperature sensing element 140 may include a conductive material. For example, the material of the temperature sensing element 140 may include copper, aluminum, silver, gold, other suitable metals or combinations thereof, but is not limited thereto.

[0054] In this embodiment, the temperature sensing element 140 can physically separate the light-emitting unit 120, the conductive line 130, and the other conductive line 150, and the temperature sensing element 140 can electrically insulate the light-emitting unit 120, the conductive line 130, and the other conductive line 150.

[0055] In this embodiment, the macroscopic pattern of the temperature sensing element 140 can be rectangular (e.g., ...). Figure 3A As shown, but not limited to, or other suitable shapes, the temperature sensing element 140 includes multiple bend patterns. For example, the microstructure of the temperature sensing element 140 may include multiple bend patterns (e.g., multiple continuously bent lines, such as...). Figure 3B As shown, but not limited to, the resistance of the temperature sensing element 140 can be increased to make the temperature sensing more sensitive, but is not limited to this. In this embodiment, the resistance of the temperature sensing element 140 can be from 10 ohms (Ω) to 1000 ohms (i.e., 10Ω ≤ resistance ≤ 1000Ω), or from 15 ohms (Ω) to 800 ohms (i.e., 15Ω ≤ resistance ≤ 800Ω), or from 20 ohms (Ω) to 800 ohms (i.e., 15Ω ≤ resistance ≤ 800Ω), but is not limited to this.

[0056] In this embodiment, the projected area A2 of the temperature sensing element 140 onto the substrate 110 in the normal direction Z of the substrate 110 accounts for 5% to 40% of the area A1 of the substrate 110 (i.e., ), or 5% to 35% (i.e., ), or 10% to 30% (that is, ), or 10% to 25% (i.e., This is to ensure that the temperature sensing element 140 can be used to sense temperature, but is not limited to this. When the projected area A2 of the temperature sensing element 140 is less than 5% of the area A1 of the substrate 110, the effect of temperature sensing will be greatly reduced; when the projected area A2 of the temperature sensing element 140 is greater than 40% of the area A1 of the substrate 110, the flexibility of the circuit design of the phototherapy device 10 will be reduced.

[0057] Although Figure 3A A temperature sensing element 140 is schematically shown disposed in the middle of the substrate 110, and the macroscopic pattern of the temperature sensing element 140 may be rectangular. However, this disclosure does not limit the number of temperature sensing elements, their arrangement position on the first surface 111 of the substrate 110, or their macroscopic pattern.

[0058] A pad P2 is disposed on the first surface 111, and the pad P2 can electrically connect the connecting wire CL2 and the temperature sensing element 140 respectively. Thus, the temperature sensing element 140 can be electrically connected to the temperature measurement system 300 through the pad P2 and the connecting wire CL2.

[0059] An insulating layer IL1 is disposed on the first surface 111. The insulating layer IL1 may cover and surround the conductive wire 130 and the temperature sensing element 140. In this embodiment, the insulating layer IL1 may be a single layer or a multilayer structure, and may include organic materials, inorganic materials, or combinations thereof, but is not limited thereto.

[0060] Another conductive line 150 is disposed on the second surface 112. The other conductive line 150 is electrically connected to the light-emitting unit 120 through a conductive element CP. The conductive element CP is located between the light-emitting unit 120 and the other conductive line 150.

[0061] The conductive connector 160 can penetrate the substrate 110, and another conductive line 150 is electrically connected to the conductive line 130 via the conductive connector 160. In this embodiment, the conductive connector 160 can be a through hole penetrating the substrate 110, wherein the through hole is filled with conductive material, and the two ends of the through hole can respectively contact the other conductive line 150 and the conductive line 130, but it is not limited to this.

[0062] An insulating layer IL2 is disposed on the second surface 112. The insulating layer IL1 may cover and surround another conductive wire 150 and a portion of the conductive element CP. In this embodiment, the insulating layer IL2 may be a single-layer or multi-layer structure, and may include organic materials, inorganic materials, or combinations thereof, but is not limited thereto.

[0063] The light-emitting unit 120 is disposed on the second surface 112. The light-emitting unit 120 can be electrically connected to the conductive line 130 via the conductive element CP, another conductive line 150, and the conductive connector 160. In this embodiment, at least a portion of the light-emitting unit 120 can overlap the temperature sensing element 140 in the normal direction Z of the substrate 110 or in a top view of the phototherapy device 10. In this embodiment, the emission wavelength of the light-emitting unit 120 may be 450 nm to 900 nm (i.e., 450 nm ≤ emission wavelength ≤ 900 nm), or 500 nm to 900 nm (i.e., 500 nm ≤ emission wavelength ≤ 900 nm), or 550 nm to 900 nm (i.e., 550 nm ≤ emission wavelength ≤ 900 nm), or 600 nm to 900 nm (i.e., 600 nm ≤ emission wavelength ≤ 900 nm) to produce a therapeutic effect on the phototherapy material 400, but is not limited thereto. In this embodiment, the light-emitting unit 120 may include a light-emitting diode, but is not limited thereto.

[0064] An encapsulation element 170 is disposed on the light-emitting unit 120 and the insulating layer IL2. The encapsulation element 170 may cover and surround the light-emitting unit 120 and another portion of the conductive element CP. In this embodiment, the material of the encapsulation element 170 may include epoxy molding compound (EMC) or other suitable materials that can reduce water and oxygen intrusion, but is not limited thereto.

[0065] An attachment element 180 is disposed on the encapsulation element 170. The attachment element 180 can be used to attach the phototherapy object 400 (e.g., skin, but not limited thereto). In this embodiment, the material of the attachment element 180 may include hydrogel, but is not limited thereto.

[0066] like Figure 1 As shown, the phototherapy device 10 includes a phototherapy substrate 100, and the phototherapy substrate 100 includes a plurality of light-emitting units 120. Figure 1 The light-emitting unit 120 is only shown to be disposed in a local area of ​​the phototherapy substrate 100, but in reality, the light-emitting unit 120 can be disposed in most areas of the phototherapy substrate 100, and for example, in a matrix arrangement, but not limited thereto) and the temperature sensing element 140, the multiple light-emitting units 120 and the temperature sensing element 140 are electrically insulated. Figure 1 The temperature sensing element 140 and the light-emitting unit 120 are arranged in staggered positions, but in reality they can partially overlap each other as needed, and the temperature sensing element 140 and the light-emitting unit 120 are respectively disposed on different surfaces of the substrate 110 (e.g., the first surface 111 and the second surface 112).

[0067] The phototherapy device 10 includes a temperature measurement system 300 and a control unit 200. The control unit 200 is electrically connected to a plurality of light-emitting units 120. The temperature measurement system 300 is electrically connected to a temperature sensing element 140 and the control unit 200, and the control unit 200 is electrically connected to the phototherapy substrate 100. The control unit 200 is disposed on one side of the phototherapy substrate 100. The control unit 200 can be electrically connected to the light-emitting units 120 in the phototherapy substrate 100 via a connecting line CL1, thereby allowing the control unit 200 to adjust the current supplied to the plurality of light-emitting units 120 to adjust the brightness of the plurality of light-emitting units 120 or turn off the plurality of light-emitting units 120.

[0068] A temperature measurement system 300 is disposed on one side of the phototherapy substrate 100. The temperature measurement system 300 is electrically connected to the temperature sensing element 140 in the phototherapy substrate 100 via a connecting wire CL2, and is also electrically connected to the control unit 200 via a connecting wire CL3. In other words, the temperature measurement system 300 can be electrically connected to the temperature sensing element 140 and the control unit 200 respectively. When multiple light-emitting units 120 are turned on for phototherapy, the temperature measurement system 300 detects the change in conductivity or resistance of the temperature sensing element 140 to determine the current temperature of the phototherapy substrate 100, and transmits the current temperature information to the control unit 200, so that the control unit 200 controls the multiple light-emitting units 120 in the phototherapy substrate 100 according to the current temperature, wherein the emission wavelength of the multiple light-emitting units 120 is from 450 nm to 900 nm.

[0069] Therefore, in the phototherapy device 10 of this embodiment, the phototherapy device 10 can sense temperature or protect the user from burns by at least the setting of the temperature sensing element 140, the control unit 200 and the temperature measurement system 300.

[0070] Figure 4 for Figure 1 The flowchart shows the driving method of the phototherapy device. Please also refer to... Figure 1 and Figure 4 The driving method of the phototherapy device 10 in this embodiment may include the following steps:

[0071] First, a phototherapy substrate 100 is provided. The phototherapy substrate 100 may include a plurality of light-emitting units 120 and a temperature sensing element 140. The light-emitting units 120 emit light in the wavelength range of 450 nm to 900 nm, and the plurality of light-emitting units 120 and the temperature sensing element 140 are electrically insulated from each other.

[0072] Next, a control unit 200 and a temperature measurement system 300 are provided. The control unit 200 can be electrically connected to multiple light-emitting units 120, and the temperature measurement system 300 can be electrically connected to the temperature sensing element 140 and the control unit 200 respectively.

[0073] Next, multiple light-emitting units 120 are turned on to perform phototherapy, and the temperature measurement system 300 is used to detect the change in conductivity or resistance of the temperature sensing element 140 in order to determine the current temperature Tc of the phototherapy substrate 100.

[0074] Next, the control unit 200 can control multiple light-emitting units 120 in the phototherapy substrate 100 based on the calculated current temperature Tc. Specifically, as follows... Figure 4When the current temperature Tc is greater than the first temperature T1 (i.e., T1 < Tc), the control unit 200 will provide an instruction to turn off multiple light-emitting units 120, thereby turning off multiple light-emitting units 120; when the current temperature Tc is less than or equal to the first temperature T1 and greater than the second temperature T2 (i.e., ... The control unit 200 provides a command to reduce the current supplied to the multiple light-emitting units 120. When the current temperature Tc is less than or equal to the second temperature T2 (i.e., Tc ≤ T2), the control unit 200 provides a command to maintain the original operation to maintain the original current supplied to the multiple light-emitting units 120. The first temperature T1 may be greater than the second temperature T2, and temperatures greater than the first temperature T1 may be, for example, temperatures that could cause burns to the phototherapy object 400, but are not limited thereto. This design allows the driving method of the phototherapy device 10 in this embodiment to sense temperature in real time or to protect or reduce the risk of burns to the user.

[0075] In this embodiment, in the step of reducing the current supplied to the multiple light-emitting units 120, the total current originally supplied to the multiple light-emitting units 120 can be reduced to, for example, 80%, 70%, 60%, 50%, 40%, 30%, 20% or 10% of the original total current, but is not limited thereto.

[0076] In this embodiment, since the temperature sensing element 140 is made of metal, its conductivity decreases or its resistance increases with increasing temperature. Therefore, the current temperature Tc of the phototherapy substrate 100 can be calculated based on the changes in conductivity or resistance of the temperature sensing element 140. For example, when the temperature sensing element 140 is made of copper, the conductivity σ0 of copper at 0°C is approximately 6.47 × 10⁻⁶. 7 Furthermore, the temperature coefficient α of copper is 0.00427; therefore, when the conductivity of the temperature sensing element 140 at the current temperature Tc is detected... It is 5.96×10 7 When needed, the following formula can be used: The current temperature Tc is calculated to be 20°C. Furthermore, for example, when the temperature sensing element 140 is made of copper and the linewidth is approximately 5 cm, the following linear relationship between resistance (y) and temperature (x) can be used: The current temperature Tc can be roughly calculated, but it is not limited to this. Furthermore, for example, when the temperature sensing element 140 is made of copper and the linewidth is approximately 3 cm, the following linear relationship between resistance (y) and temperature (x) can be used: The current temperature Tc can be roughly calculated, but it is not limited to this. Furthermore, for example, when the temperature sensing element 140 is made of copper and the linewidth is approximately 2 cm, the following linear relationship between resistance (y) and temperature (x) can be used: The current temperature Tc can be roughly calculated, but it is not limited to this. Furthermore, for example, when the temperature sensing element 140 is made of copper and the linewidth is approximately 1 cm, the following linear relationship between resistance (y) and temperature (x) can be used: We can roughly calculate the current temperature Tc, but it is not limited to this.

[0077] Other embodiments will be listed below for illustration. It must be noted that the following embodiments use the component reference numerals and some content from the foregoing embodiments, with the same reference numerals representing the same or similar components, and descriptions of identical technical content omitted. For explanations of the omitted parts, please refer to the foregoing embodiments; these will not be repeated in the following embodiments.

[0078] Figure 5 This is a bottom view schematic diagram of the phototherapy device according to the second embodiment of this disclosure. The drawings are for clarity and ease of explanation. Figure 5 Several components of the phototherapy device (such as the light-emitting unit, another conductive wire, conductive connector, encapsulation element, and attachment element) are not shown. Please also refer to... Figure 5 and Figure 3A The phototherapy device 10a in this embodiment and Figure 3A Similar to the phototherapy device 10, except that in this embodiment, the phototherapy device 10a can have multiple temperature sensing elements 140a. The macroscopic pattern of the multiple temperature sensing elements 140a can be square, and the multiple square temperature sensing elements 140a can be respectively disposed in the middle of the first surface 111 of the substrate 110 and multiple corners (e.g., four corners), but is not limited thereto.

[0079] Figure 6 This is a bottom view schematic diagram of the phototherapy device according to the third embodiment of this disclosure. The drawings are for clarity and ease of explanation. Figure 6 Several components of the phototherapy device (such as the light-emitting unit, another conductive wire, conductive connector, encapsulation element, and attachment element) are not shown. Please also refer to... Figure 6 and Figure 3A The phototherapy device 10b in this embodiment and Figure 3A Similar to the phototherapy device 10, except that in this embodiment, the phototherapy device 10b can have multiple temperature sensing elements 140b. The macroscopic pattern of the multiple temperature sensing elements 140b can be strip-shaped, and the multiple strip-shaped temperature sensing elements 140b can be respectively arranged on two diagonals of the first surface 111 of the substrate 110 to form an X-shape, but is not limited to this.

[0080] Figure 7 This is a bottom view schematic diagram of the phototherapy device according to the fourth embodiment of this disclosure. The drawings are for clarity and ease of explanation. Figure 7 Several components of the phototherapy device (such as the light-emitting unit, another conductive wire, conductive connector, encapsulation element, and attachment element) are not shown. Please also refer to... Figure 7 and Figure 3A The phototherapy device 10c in this embodiment and Figure 3A Similar to the phototherapy device 10, except that in the phototherapy device 10c of this embodiment, the temperature sensing element 140c can be a strip with multiple continuous bends, and the strip-shaped temperature sensing element 140c can be arranged from the left to the right side of the first surface 111 of the substrate 110, but is not limited thereto.

[0081] Figure 8A This is a bottom view schematic diagram of the phototherapy device according to the fifth embodiment of this disclosure. Figure 8B for Figure 8A An enlarged view of region R2 of the phototherapy substrate in the phototherapy device. For clarity and ease of explanation, the accompanying diagram is provided. Figure 8A Several components of the phototherapy device (such as the light-emitting unit, another conductive wire, conductive connector, encapsulation element, and attachment element) are not shown. Please also refer to... Figure 8A , Figure 8B and with Figure 3A The phototherapy device 10d in this embodiment and Figure 3A Similar to the phototherapy device 10, the difference lies in that: in this embodiment, the phototherapy device 10d can have multiple temperature sensing elements 140d. The macroscopic pattern of the multiple temperature sensing elements 140d can include multiple stripes and one circle. The multiple strip-shaped temperature sensing elements 140d can be respectively disposed on the first surface 111 of the substrate 110 to form a grid pattern, and the one circular temperature sensing element 140d can be disposed in the middle of the first surface 111 of the substrate 110 or in the middle of the grid pattern, but is not limited thereto. In this embodiment, the microscopic pattern of these macroscopically patterned temperature sensing elements (e.g., stripes or pie patterns) can include multiple turning patterns, and the microscopic pattern of the one circular temperature sensing element 140d can include multiple arc-shaped patterns (e.g., spiral or vortex-shaped lines, such as...). Figure 8B (As shown, but not limited to).

[0082] In summary, in the phototherapy device and driving method of this disclosure embodiment, the setup of at least a temperature sensing element, a control unit, and a temperature measurement system enables the phototherapy device to sense temperature in real time or protect the user from burns. The projected area of ​​the temperature sensing element onto the substrate occupies 5% to 40% of the substrate area to ensure that the temperature sensing element can be used to sense temperature. The microstructure of the temperature sensing element may include multiple transition patterns, thereby increasing the resistance of the temperature sensing element to make temperature sensing more sensitive. The emission wavelength of the light-emitting unit can be from 450 nanometers to 900 nanometers to produce therapeutic effects on the phototherapy material.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions disclosed herein, and are not intended to limit them. Although the present disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments disclosed herein.

Claims

1. A phototherapy device, characterized in that, include: A substrate having a first side and a second side facing each other; The light-emitting unit is disposed on the second surface; as well as A conductive layer is disposed on the first surface, wherein the conductive layer includes electrically insulated conductive lines and a temperature sensing element, and the conductive lines are electrically connected to the light-emitting unit. The light-emitting unit emits light in the range of 450 nanometers to 900 nanometers.

2. The phototherapy device according to claim 1, characterized in that, From a top view of the phototherapy device, at least a portion of the light-emitting unit overlaps with the temperature-sensing element.

3. The phototherapy device according to claim 1, characterized in that, The temperature sensing element may include multiple transition patterns.

4. The phototherapy device according to claim 1, characterized in that, The projected area of ​​the temperature sensing element onto the substrate accounts for 5% to 40% of the area of ​​the substrate.

5. The phototherapy device according to claim 1, characterized in that, Also includes: Another conductive line is disposed on the second surface and electrically connected to the light-emitting unit; as well as The conductive connector penetrates the substrate. The other conductive wire is electrically connected to the conductive wire via the conductive connector.

6. The phototherapy device according to claim 1, characterized in that, The temperature sensing element has a resistance of 10 ohms to 1000 ohms.

7. The phototherapy device according to claim 1, characterized in that, Also includes: An encapsulation element is disposed on the light-emitting unit; as well as An attachment element is disposed on the encapsulation element and is used to attach the phototherapy object.

8. A driving method for a phototherapy device, characterized in that, include: A phototherapy substrate is provided, comprising a plurality of light-emitting units and a temperature sensing element, wherein the plurality of light-emitting units and the temperature sensing element are electrically insulated; A control unit and a temperature measurement system are provided, wherein the control unit is electrically connected to the plurality of light-emitting units, and the temperature measurement system is electrically connected to the temperature sensing element and the control unit respectively; The multiple light-emitting units are turned on for phototherapy, and the temperature measurement system is used to detect the change in conductivity or resistance of the temperature sensing element in order to determine the current temperature. as well as The control unit operates the plurality of light-emitting units in the phototherapy substrate according to the current temperature. The emission wavelength of the plurality of light-emitting units is from 450 nanometers to 900 nanometers.

9. The driving method according to claim 8, characterized in that, When the current temperature is greater than the first temperature, the control unit provides a command to turn off the plurality of light-emitting units to turn off the plurality of light-emitting units; When the current temperature is less than or equal to the first temperature and greater than the second temperature, the control unit provides a current reduction command to reduce the current supplied to the plurality of light-emitting units; When the current temperature is less than or equal to the second temperature, the control unit provides a command to maintain the original operation to maintain the current originally supplied to the plurality of light-emitting units.

10. The driving method according to claim 9, characterized in that, The first temperature is greater than the second temperature.

Images