Phototherapy device
By integrating a first screen and a second screen into the phototherapy device, and utilizing the combination of excitation light and detection light, adaptive treatment for different users and diseases is achieved, improving the accuracy and adaptability of the treatment effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-31
- Publication Date
- 2026-03-27
AI Technical Summary
Existing phototherapy devices have poor adaptability, resulting in poor phototherapy effects and an inability to provide precise treatment for different users and different diseases.
The structure integrates a first screen and a second screen. The first screen emits excitation light and receives detection light, while the second screen converts the detection light into an electrical signal. Based on the electrical signal, the luminous intensity of the functional light unit group is controlled to achieve adaptive adjustment of the therapeutic light intensity.
It improves the adaptability and therapeutic effect of phototherapy devices, and can precisely control the intensity of therapeutic light according to the degree of lesions in abnormal areas, so as to achieve precise treatment.
Smart Images
Figure CN121731677A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of photomedicine technology, and more particularly to a phototherapy device. Background Technology
[0002] In the field of phototherapy, light can not only treat diseases but also diagnose them. Currently, it is widely acknowledged in the industry that using specific wavelengths of light to appropriately irradiate diseased areas inside and outside the body has good auxiliary therapeutic functions, especially in the treatment of skin diseases, cancer patient rehabilitation, wound healing, and even cosmetic skincare. Therefore, various phototherapy devices have appeared on the market. However, existing phototherapy devices suffer from poor adaptability to different users and diseases, resulting in less effective phototherapy. Summary of the Invention
[0003] This invention provides a phototherapy device that integrates a first screen capable of emitting therapeutic light and excitation light and a second screen capable of receiving detection light, in order to solve the problems of poor adaptability and ineffective phototherapy in existing phototherapy devices.
[0004] To address the aforementioned technical problems, the present invention adopts the following technical solution:
[0005] This invention provides a phototherapy device, comprising: a first screen and a second screen, the second screen being disposed in contact with one side of the first screen; wherein, the first screen includes a first encapsulation layer, a light-emitting layer and a first substrate layer stacked sequentially, the light-emitting layer including an excitation light unit group and a functional light unit group, the excitation light unit group being used to emit excitation light to an abnormal region, the abnormal region emitting detection light after being excited by the excitation light, the second screen being used to receive the detection light and convert the detection light into an electrical signal, and the phototherapy device controlling the luminous intensity of the functional light unit group according to the detection light received by the second screen.
[0006] Optionally, the first screen further includes a first electrode layer and a second electrode layer. The first electrode layer is disposed on the side of the light-emitting layer near the first encapsulation layer, and the second electrode layer is disposed on the side of the light-emitting layer near the first substrate layer. The first electrode layer also has a cutout area for the detection light to pass through.
[0007] Optionally, the first electrode layer includes a plurality of strip-shaped first electrodes extending along a first direction, and the plurality of first electrodes are arranged sequentially at intervals along a second direction, the plurality of first electrodes forming the hollow area of the first electrode layer, the first direction and the second direction intersecting each other.
[0008] Optionally, in the first direction, the excitation light unit group and the functional light unit group are arranged alternately at intervals. The excitation light unit group includes a plurality of excitation light units arranged at intervals along the second direction, and the functional light unit group includes a plurality of functional light units arranged at intervals along the second direction.
[0009] Optionally, the second screen includes a second substrate layer, an anode layer, a photosensitive layer, a cathode layer, and a second encapsulation layer stacked sequentially. The photosensitive layer includes a plurality of photosensitive units, which are used to convert detection light into electrical signals. The projection of each photosensitive unit on the light-emitting layer is adjacent to one of the functional light units, and the projection of the photosensitive unit on the first electrode layer is located within the cutout area.
[0010] Optionally, the functional light unit includes one of OLED, mini LED, or micro LED, and the area of the functional light unit ranges from 0.01 mm². 2 ~10mm 2 The excitation unit includes one of OLED, mini LED, or micro LED, and the area of the excitation unit ranges from 0.01 mm². 2 ~10mm 2 .
[0011] Optionally, the second electrode layer includes a plurality of strip-shaped second electrodes extending along the second direction, and the plurality of second electrodes are arranged sequentially at intervals along the first direction; each of the excitation light units is disposed in the region where the first electrode and the second electrode overlap, and each of the functional light units is disposed in the region where the first electrode and the second electrode overlap.
[0012] Optionally, the area of the photosensitive unit includes 0.01 mm. 2 ~10mm 2 .
[0013] Optionally, the first encapsulation layer is a thin-film encapsulation layer, the second electrode layer is a TFT driving layer, the first encapsulation layer is reused as the second substrate layer, and the anode layer, photosensitive layer, cathode layer and the second encapsulation layer are sequentially stacked on the side of the second encapsulation layer away from the light-emitting layer.
[0014] Optionally, an adhesive layer is further provided between the first screen layer and the second screen layer, the adhesive layer including optical adhesive.
[0015] The present invention provides a first screen and a second screen, wherein the second screen is disposed in contact with one side of the first screen; wherein the first screen includes a first encapsulation layer, a light-emitting layer and a first substrate layer stacked sequentially, the light-emitting layer includes an excitation light unit group and a functional light unit group, the excitation light unit group is used to emit excitation light to an abnormal area, the abnormal area emits detection light after being excited by the excitation light, the second screen is used to receive the detection light and convert the detection light into an electrical signal, and the phototherapy device controls the luminous intensity of the functional light unit group according to the detection light received by the second screen. In the present invention, by setting the first screen and the second screen, the condition of the abnormal area is accurately detected, and then the intensity of the therapeutic light emitted by the functional light unit group is adjusted according to the condition of the abnormal area, so that the phototherapy device can adaptively adjust to different conditions, thereby improving the phototherapy effect. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.
[0017] Figure 1 This is a top view of a phototherapy device provided in an embodiment of the present invention;
[0018] Figure 2 yes Figure 1 Cross-sectional view along section line AA';
[0019] Figure 3 This is a top view of the second phototherapy device provided in this embodiment of the invention;
[0020] Figure 4 yes Figure 3 Cross-sectional view along section line BB';
[0021] Figure 5 This is a cross-sectional view of the third phototherapy device provided in the embodiments of the present invention. Detailed Implementation
[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.
[0023] Based on the above-mentioned technical problems, this embodiment proposes the following solutions:
[0024] Figure 1 This is a top view of a phototherapy device provided in an embodiment of the present invention. Figure 2 yes Figure 1 See the cross-sectional view along section line AA'. Figure 1 and Figure 2 The phototherapy device provided in this embodiment of the invention includes a first screen 1 and a second screen 2, with the second screen 2 in contact with one side of the first screen 1. The first screen 1 includes a first encapsulation layer 15, a light-emitting layer 13, and a first substrate layer 11 stacked sequentially. The light-emitting layer 13 includes an excitation light unit group and a functional light unit group. The excitation light unit group is used to emit excitation light to an abnormal region P. After being excited by the excitation light, the abnormal region P emits detection light. The second screen 2 is used to receive the detection light and convert it into an electrical signal. The phototherapy device controls the luminous intensity of the functional light unit group according to the detection light received by the second screen 2.
[0025] In this embodiment, the second screen 2 is disposed on one side of the first screen 1, and the second screen 2 is in contact with the first screen 1. The second screen 2 can be disposed on the light-emitting side of the first screen 1 or on the non-light-emitting side of the first screen 1. In order to make the first screen 1 and the second screen 2 firmly in contact, they can be fixed by adhesive, for example, by using optically clear adhesive (OCA). When assembling the first screen 1 and the second screen 2, they can be aligned by aligning the outer contours of the first screen 1 and the second screen 2 or by setting alignment marks. The first screen 1 includes a first encapsulation layer 15, a light-emitting layer 13 and a first substrate layer 11. The first encapsulation layer 15, the light-emitting layer 13 and the first substrate layer 11 are stacked in sequence. In order to enable the light-emitting layer 13 to emit therapeutic light and excitation light respectively, the light-emitting layer 13 includes an excitation light unit group and a functional light unit group. The excitation light unit group is used to emit excitation light and the functional light unit group is used to emit therapeutic light.
[0026] Specifically, when phototherapy devices are used in the treatment of skin diseases, rehabilitation of cancer patients, wound healing, or cosmetic skincare, the required intensity and amount of light vary from person to person due to differences in affected areas and the different manifestations of each disease. For example, the light uniformity required for uneven facial skin differs from that for smooth back skin, and the light intensity required for cancer patient rehabilitation differs from that required for cosmetic skincare. This poses a significant challenge to the therapeutic effect of phototherapy devices. The phototherapy device provided in this embodiment first emits excitation light, such as UV light, to the abnormal area P through the first screen 1. After receiving the excitation light, the abnormal area P is excited and emits detection light, such as fluorescence. The light energy of the fluorescence is related to the severity of the tissue lesion. The fluorescence is positively correlated. After the fluorescence is irradiated by the second screen 2, the second screen 2 converts the fluorescence into an electrical signal. Finally, the phototherapy device identifies the abnormal area P based on the electrical signal, judges the degree of lesion in the abnormal area P, and controls the luminous intensity of the therapeutic light emitted by the functional light unit group in the first screen 1 according to the severity of the lesion in the abnormal area P. The therapeutic light can be red light. If the degree of lesion in the abnormal area is high, the luminous intensity of the therapeutic light emitted by the functional light unit group is increased, and vice versa, the luminous intensity of the therapeutic light emitted by the functional light unit group is decreased, which improves the adaptability of the phototherapy device. In addition, the device can also control the area on the light-emitting layer 13 corresponding to the position of the detection light received by the second screen 2 to emit therapeutic light, thus achieving precise treatment.
[0027] It should be noted that the abnormal area P specifically refers to the affected area on the human body, such as skin disease lesions, tumors, wounds that are not yet healing, and areas requiring cosmetic treatments. In addition, in order to improve the accuracy of the second screen body 2 detection and reduce interference from treatment light, excitation light, and other visible light, the detection light and excitation light have different wavelengths. Specifically, before the use of the phototherapy device, the patient will take a targeted drug orally. The targeted drug is enriched in the diseased tissue. In addition, the targeted drug includes a photosensitizer. Utilizing the fluorescence properties of the photosensitizer, when the excitation light shines on the photosensitizer, the photosensitizer is excited by the excitation light and emits detection light with a different wavelength than the excitation light.
[0028] Continue to refer to Figure 2 In order to simplify the driving circuit structure of the first screen 1 and improve the light transmittance of the first screen 1, the first screen 1 in this embodiment also includes a first electrode layer 14 and a second electrode layer 12. The first electrode layer 14 is disposed on the side of the light-emitting layer 13 near the first encapsulation layer 15, and the second electrode layer 12 is disposed on the side of the light-emitting layer 13 near the first substrate layer 11. The first electrode layer 14 is also provided with a hollow area for detecting the passage of light.
[0029] Specifically, in this embodiment, the light-emitting side of the first screen 1 is the side of the first substrate layer 11, and the second screen 2 is disposed on the side of the first encapsulation layer 15 of the first screen 1, that is, the second screen 2 is disposed on the non-light-emitting side of the phototherapy device. In this embodiment, the first screen 1 also includes a first electrode layer 14 and a second electrode layer 12. The first electrode layer 14 is disposed on the side of the light-emitting layer 13 near the first encapsulation layer 15, and the second electrode layer 12 is disposed on the side of the light-emitting layer 13 near the first substrate layer 11. The first electrode layer 14 is the anode, and the second electrode layer 12 is the cathode. Alternatively, the first electrode layer 14 can be the cathode and the second electrode layer 12 can be the anode. The choice can be made according to specific needs. In this embodiment, no specific limitation is made. The first electrode layer 14 and the second electrode layer 12 are used to provide the holes and electrons necessary for the light-emitting layer 13 to emit light. For example, the first electrode layer 14 is the cathode and the second electrode layer 12 is the anode. The first electrode layer 14 provides electrons to the light-emitting layer 13, and the second electrode layer 12 provides holes to the light-emitting layer 13. The holes and electrons meet in the light-emitting layer 13 to form excitons. The excitons de-excite the light-emitting layer 13 to emit light.
[0030] In this embodiment, the second screen 2 is set on the non-light-emitting side of the phototherapy device. In order to increase the transmittance of the detection light, a hollow area for detecting the passage of light is also provided on the first electrode layer 14. The first electrode layer 14 is set on the side of the light-emitting layer 13 near the first encapsulation layer 15. In the art, it is customary to design the electrode set on the side of the light-emitting layer 13 near the first encapsulation layer 15 as the cathode. The cathode is usually made of materials with low light transmittance and high reflectance, such as aluminum. Therefore, a hollow area for detecting the passage of light is set on the first electrode layer 14. The length of the hollow area is less than or equal to the length of the first electrode layer 14. If the second screen 2 is set on the light-emitting side of the phototherapy device, the hollow area does not need to be set. Or, if the light-emitting side of the phototherapy device is the side of the first encapsulation layer 15, the first electrode does not need to be set with a hollow area.
[0031] Continue to refer to Figure 1 and Figure 2 In this embodiment, the first electrode layer 14 includes a plurality of strip-shaped first electrodes 141 extending along the first direction X, and the plurality of first electrodes 141 are arranged sequentially at intervals along the second direction Y, and the plurality of first electrodes 141 form a hollow area of the first electrode layer 14, with the first direction X and the second direction Y intersecting each other.
[0032] Specifically, in order to simplify the fabrication process of the phototherapy device and increase the number of detection lights passing through the first screen 1 to the second screen 2, in this embodiment, the first electrode layer 14 includes a plurality of strip-shaped first electrodes 141 extending along the first direction X, and the plurality of first electrodes 141 are arranged sequentially at intervals along the second direction Y. That is, the first electrode layer 14 is composed of a plurality of strip-shaped first electrodes 141 arranged sequentially at intervals in the second direction Y. The interval area between each first electrode 141 forms a hollow area. The first direction X and the second direction Y intersect each other, and both the first direction X and the second direction Y are parallel to the light-emitting layer 13. Preferably, the first direction X and the second direction Y are perpendicular to each other.
[0033] Continue to refer to Figure 1 and Figure 2 In the first direction X, excitation light unit groups and functional light unit groups are arranged alternately at intervals. The excitation light unit group includes multiple excitation light units 132 arranged at intervals along the second direction Y, and the functional light unit group includes multiple functional light units 131 arranged at intervals along the second direction Y.
[0034] Specifically, in this embodiment, the excitation light unit group includes multiple excitation light units 132, which are arranged sequentially at intervals along the second direction Y. The functional light unit group includes multiple functional light units 131, which are also arranged sequentially at intervals along the second direction Y. This arrangement allows the excitation light units 132 and functional light units 131 to be arranged alternately at intervals in the first direction, that is, each excitation light unit 132 is separated from and adjacent to a functional light unit 131. The excitation light unit 132 is used to emit excitation light. Through the above layout, the excitation light units 132 can be evenly distributed. On the light-emitting layer 13, the light-emitting layer 13 can emit uniform excitation light. After receiving uniform excitation light, the abnormal region P can emit more accurate detection light, thereby improving the detection accuracy of the second screen 2. On the other hand, the functional light unit 131 is used to emit therapeutic light. The layout of the functional light unit 131 can make the functional light unit 131 evenly distributed on the light-emitting layer 13, thereby emitting uniform therapeutic light. Moreover, through the above arrangement, the luminous intensity of each functional light unit 131 can be individually controlled, further improving the accuracy of the phototherapy device and enhancing the phototherapy effect.
[0035] Figure 3 This is a top view of the second phototherapy device provided in this embodiment of the invention; Figure 4 yes Figure 3 Cross-sectional view along section line BB'; Reference Figure 3 and Figure 4In this example, the second screen 2 includes a second substrate layer 21, an anode layer, a photosensitive layer, a cathode layer, and a second encapsulation layer 23 stacked in sequence. The photosensitive layer includes multiple photosensitive units 22, which are used to convert detection light into electrical signals. The projection of each photosensitive unit 22 on the light-emitting layer 13 is adjacent to a functional light unit 131. The projection of the photosensitive unit 22 on the first electrode layer 14 is located in the hollow area.
[0036] Specifically, the second screen 2 is used to receive detection light and convert it into an electrical signal. In this embodiment, the second screen 2 includes a second substrate layer 21, an anode layer (not shown in the figure), a photosensitive layer, a cathode layer (not shown in the figure), and a second encapsulation layer 23. The anode layer is stacked on the second substrate layer 21, the photosensitive layer is stacked on the anode layer, the cathode layer is stacked on the photosensitive layer, and the second encapsulation layer 23 covers the cathode layer. The anode layer can be an indium tin oxide (ITO) layer, and the photosensitive layer can be a photodetector material such as perovskite, which is directly coated on the anode layer by spin coating. The cathode layer can be a metal material such as aluminum, which is prepared by vacuum evaporation. In addition, in order to better prepare the photosensitive layer by spin coating on the anode layer, an insulating layer can be spin coated on the anode layer before preparing the photosensitive layer. That is, an insulating layer, such as a silicon oxide film layer, can be set between the anode layer and the photosensitive layer. The thickness of the silicon oxide film layer is less than or equal to 0.5 μm.
[0037] In this embodiment, the photosensitive layer includes multiple photosensitive units 22. Each photosensitive unit 22 is used to independently convert detection light into an electrical signal, which is then transmitted to the phototherapy device through the cathode layer and the anode layer. The projection of each photosensitive unit 22 onto the light-emitting layer 13 is adjacent to a functional light unit 131. In this embodiment, the photosensitive units 22, the functional light unit 131, and the excitation light unit 132 of the light-emitting layer 13 are arranged in different layers. For a clearer illustration of their positional relationship, please refer to... Figure 3 and Figure 4 , Figure 3 The diagram shows the positional relationship of the functional light unit 131, the excitation light unit 132, and the photosensitive unit 22 in the direction perpendicular to the first substrate layer 11. It can be seen that the photosensitive unit 22 is arranged adjacent to the functional light unit 131. This arrangement allows the position of the adjacent functional light unit 131 to be determined by the position of the photosensitive unit 22. For example, if a photosensitive unit 22 receives detection light, the phototherapy device will control the corresponding functional light unit 131 of the photosensitive unit 22 to emit light, or the phototherapy device will adjust the intensity of the therapeutic light emitted by the corresponding functional light unit of the photosensitive unit 22.
[0038] On the other hand, in this embodiment, the photosensitive unit 22 is disposed within the hollow area, that is, in the direction perpendicular to the first electrode layer 14, the projection of the photosensitive unit 22 onto the first electrode layer 14 is located within the hollow area, as shown in the reference. Figure 3In this embodiment, in the direction perpendicular to the first substrate layer 11, the hollow area formed by the strip-shaped first electrode 141 does not overlap with the functional light unit 131 and the excitation light unit 132. That is, by setting the projection of the photosensitive unit 22 on the first electrode layer 14 to be within the hollow area, the detection light can be directly transmitted from the first substrate layer 11 of the first screen body 1 to the surface of the second screen body 2 after passing through the second electrode layer 12. This greatly increases the amount of detection light transmitted through the first screen body 1, ensures the intensity of the detection light, and improves the detection accuracy of the second screen body 2.
[0039] Furthermore, the phototherapy device also includes multiple collimating lenses 3 spaced apart. The collimating lenses 3 are disposed on the side of the photosensitive unit 22 that receives the detection light. Each photosensitive unit 22 is provided with a corresponding collimating lens 3. The projected area of the photosensitive unit 22 on the second substrate layer 21 is less than or equal to the area of the collimating lens 3. The collimating lens 3 includes a cylindrical lens, and the cylindrical surface of the cylindrical lens bulges outward in the direction close to the photosensitive unit 22. The area of the collimating lens 3 is less than or equal to the area of the hollow area. This arrangement can change the transmission angle of the detection light in the optical path, thereby reducing the angle when the detection light is incident on the surface of the photosensitive unit 22. This prevents the angle between the detection light and the photosensitive unit 22 from being too large, which would cause the detection light to fail to reach the surface of the photosensitive unit 22. It can also block other light rays besides the detection light from incident on the surface of the photosensitive unit 22, reducing the interference of light rays other than the detection light on the photosensitive unit 22 and improving the accuracy of the photosensitive unit 22. The collimating lens 3 can be disposed on the side of the second substrate layer 21, the first encapsulation layer 15, the second electrode layer 12, or the first substrate layer 11 away from the photosensitive unit 22. The collimating lens 3 can also be disposed within the hollow area of the first electrode layer 14 or in the gap between the functional light unit 131 and the excitation light unit 132 in the light-emitting layer 13. (Reference) Figure 5 , Figure 5 The collimating lens is shown as being positioned on the side of the second substrate layer 21 away from the photosensitive unit.
[0040] The phototherapy device also includes multiple spaced-apart focusing lenses. The focusing lenses are disposed within the first substrate layer 11 or on the side of the first substrate layer 11 away from the functional light unit 131. In the direction perpendicular to the first substrate layer 11, each functional light unit 131 is provided with at least one focusing lens. The focusing lenses bulge outward in the direction away from the functional light unit 131. The focusing lenses can be disposed on the side of the second electrode layer 12 or the first substrate layer 11 away from the functional light unit 131. The projected area of the functional light unit 131 on the first substrate layer 11 is greater than or equal to the area of the collimating lens. The focusing lenses are used to reduce the light irradiation area of the therapeutic light emitted by the functional light unit 131, so as to avoid the therapeutic light interfering with the normal area when treating the abnormal area P, thereby achieving precise treatment by the phototherapy device. In this way, the focusing lenses can also increase the light irradiation intensity of the therapeutic light emitted by the functional light unit 131, thereby improving the phototherapy effect.
[0041] Specifically, the collimating lens 3 and the focusing lens can be fabricated using photolithography, nanoimprinting, inkjet printing, chemical vapor deposition (CVD), physical vapor deposition (PVD), or reactive ion etching (RIE).
[0042] Furthermore, the functional light unit 131 includes one of OLED, mini LED, or micro LED, and the area of the functional light unit 131 ranges from 0.01 mm². 2 ~10mm 2 The excitation unit 132 includes one of OLED, mini LED, or micro LED, and the area of the excitation unit 132 ranges from 0.01 mm². 2 ~10mm 2 .
[0043] Specifically, Organic Light-Emitting Devices (OLEDs) use organic electroluminescent materials and are active light-emitting devices with advantages such as low power consumption, wide color gamut, and thinner size. Mini LEDs, also known as sub-millimeter light-emitting diodes, refer to LED devices with a chip long side dimension ranging from 100 to 300 micrometers. They adopt flip-chip structure and COB packaging technology and have high brightness, high contrast, long life and low power consumption characteristics. Micro LEDs, also known as micro light-emitting diodes, are also a type of LED device, but smaller than mini LEDs, generally between 1 and 100 micrometers. The long side dimension of common micro LED chips is 10-50 micrometers. In this embodiment, both the functional light unit and the excitation light unit can be OLEDs. This arrangement allows the functional light unit and the excitation light unit to be fabricated in the same layer, simplifying the fabrication process of the first screen 1.
[0044] The functional optical unit 131 has an area ranging from 0.01 mm. 2 ~10mm 2 It can be 0.01mm 2 0.05mm 2 0.1mm 2 0.5mm 2 1mm 2 3mm 2 5mm 2 8mm 2 10mm 2 If the area of the functional optical unit 131 is less than 0.01 mm 2 This will reduce the intensity of the therapeutic light emitted by the functional light unit 131, thereby affecting the phototherapy effect of the phototherapy device. If the area of the functional light unit 131 is greater than 10mm², it will reduce the intensity of the therapeutic light emitted by the functional light unit 131.2 This is not conducive to the zonal treatment of the abnormal region P. On the other hand, the area range of the excitation unit 132 includes 0.01 mm. 2 ~10mm 2 It can be 0.01mm 2 0.05mm 2 0.1mm 2 0.5mm 2 1mm 2 3mm 2 5mm 2 8mm 2 10mm 2 If the area of the excitation unit 132 is less than 0.01 mm 2 This will result in the excitation unit 132 having an excessively small light-emitting area, reducing the area from which the excitation light is emitted, and consequently affecting the accuracy of the phototherapy device's detection. If the area of the excitation unit 132 is greater than 10 mm², it will cause the light-emitting area to be too small, reducing the light-emitting area of the excitation unit 132 and thus affecting the accuracy of the detection. 2 This would result in the excitation light unit 132 occupying a large area, affecting the light emission area of the treatment light unit.
[0045] Preferably, the emission spectrum half-width of the therapeutic light emitted by the functional light unit 131 is less than 20 nm. The excitation light is ultraviolet light, that is, the peak wavelength range of the light emitted by the excitation light unit 132 is less than or equal to 400 nm, preferably greater than or equal to 200 nm and less than or equal to 400 nm.
[0046] Continue to refer to Figure 3 and Figure 4 In this embodiment, in order to drive the functional light unit 131 and the excitation light unit 132, the second electrode layer 12 includes a plurality of strip-shaped second electrodes 121 extending along the second direction Y, and the plurality of second electrodes 121 are arranged sequentially at intervals along the first direction X; each excitation light unit 132 is disposed in the region where the first electrode 141 and the second electrode 121 overlap, and each functional light unit 131 is disposed in the region where the first electrode 141 and the second electrode 121 overlap.
[0047] Specifically, in this example, the first screen 1 is driven by a passive matrix (PM) method. The second electrode layer 12 includes multiple strip-shaped second electrodes 121 extending along the second direction Y, and the multiple second electrodes 121 are arranged alternately along the first direction X. The first electrode layer 14 includes multiple strip-shaped first electrodes 141 extending along the first direction X, and the multiple first electrodes 141 are arranged alternately along the second direction Y. It can be seen that in this embodiment, both the first electrode 141 and the second electrode 121 are strip-shaped electrodes, and the first electrode 141 and the second electrode 121 are intersecting. The area is provided with functional light unit 131 and excitation light unit 132 respectively. Then, the first electrode 141 and the second electrode 121 are connected to the driver chip (IC) respectively through leads. In this embodiment, the first screen can be an OLED screen. The OLED screen is driven by DC driving. Then, the light intensity of the first screen 1 can be changed by changing the magnitude of the driving current through the driver chip. In this way, the light emission and extinguishing of each excitation light unit 132 and functional light unit 131 can be independently controlled by controlling the address selection and conduction of the first electrode 141 and the second electrode 121 through the driver chip.
[0048] In this embodiment, by setting intersecting strip-shaped first electrodes 141 and strip-shaped second electrodes 121, the functional light unit 131 and the excitation light unit 132 are positioned in the overlapping area of the first electrode 141 and the second electrode 121. This arrangement also prevents the excitation light unit 132 and the functional light unit 131 from overlapping with the hollowed-out area on the first electrode layer 14, thus avoiding the excitation light unit 132 and the functional light unit 131 from blocking the detection light from passing through the first screen 1 to the second screen 2. It also prevents the light emitted by the excitation light unit 132 and the functional light unit 131 from being directly absorbed by the second screen 2, thereby increasing the detection accuracy of the second screen 2.
[0049] Furthermore, the area of the photosensitive unit 22 ranges from 0.01 mm. 2 ~10mm 2 .
[0050] In this embodiment, the area of the photosensitive unit 22 ranges from 0.01 mm. 2 ~10mm 2 Each photosensitive unit 22 is used to receive detection light and convert it into an electrical signal. If the area of the photosensitive unit 22 is less than 0.01 mm², the signal will be transmitted through the photosensitive unit. 2 This would reduce the ability of the second screen 2 to receive detection light. On the other hand, in this embodiment, the photosensitive unit 22 is disposed in the hollow area of the first electrode layer 14. If the area of the photosensitive unit 22 is greater than 10 mm², 2This will lead to an increase in the hollow area of the first electrode layer 14, which in turn will increase the spacing between the functional light unit and the excitation light unit, resulting in a decrease in the aperture ratio of the functional light or excitation light of the first screen 1.
[0051] Furthermore, the first encapsulation layer 15 is a thin-film encapsulation, the second electrode layer 12 is a TFT driving layer, the first encapsulation layer 15 is reused as a second substrate layer 21, and the anode layer, photosensitive layer, cathode layer and second encapsulation layer 23 are stacked sequentially on the side of the first encapsulation layer 15 away from the light-emitting layer 13.
[0052] In this example, the first encapsulation layer 15 of the first screen 1 is reused as the second substrate layer 21 of the second screen 2. The second screen 2 is set on the side of the first encapsulation layer 15 away from the light-emitting layer 13. This setting eliminates the need for a second substrate layer 21 in the second screen 2. The fabrication of the second screen 2 can be completed simply by sequentially stacking the anode layer, photosensitive layer, cathode layer, and second encapsulation layer 23 on the side of the first encapsulation layer 15 of the first screen 1. This reduces the fabrication process of the second substrate layer 21 of the second screen 2. On the other hand, since the second screen 2 is fabricated directly on the basis of the first screen 1, the bonding force between the first screen 1 and the second screen 2 can be increased, thereby improving the stability of the phototherapy device.
[0053] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.
Claims
1. A phototherapy device, characterized in that, include: A first screen and a second screen, wherein the second screen is disposed in contact with one side of the first screen; wherein the first screen includes a first encapsulation layer, a light-emitting layer and a first substrate layer stacked in sequence, the light-emitting layer includes an excitation light unit group and a functional light unit group, the excitation light unit group is used to emit excitation light to an abnormal area, the abnormal area emits detection light after being excited by the excitation light, the second screen is used to receive the detection light and convert the detection light into an electrical signal, and the phototherapy device controls the luminous intensity of the functional light unit group according to the detection light received by the second screen.
2. The phototherapy device according to claim 1, characterized in that, The first screen also includes a first electrode layer and a second electrode layer. The first electrode layer is disposed on the side of the light-emitting layer near the first encapsulation layer, and the second electrode layer is disposed on the side of the light-emitting layer near the first substrate layer. The first electrode layer also has a cutout area for the detection light to pass through.
3. The phototherapy device according to claim 2, characterized in that, The first electrode layer includes a plurality of strip-shaped first electrodes extending along a first direction, and the plurality of first electrodes are arranged at intervals along a second direction, forming the hollow area of the first electrode layer, with the first direction and the second direction intersecting each other.
4. The phototherapy device according to claim 3, characterized in that, In the first direction, excitation light unit groups and functional light unit groups are arranged alternately at intervals. The excitation light unit group includes a plurality of excitation light units arranged at intervals along the second direction, and the functional light unit group includes a plurality of functional light units arranged at intervals along the second direction.
5. The phototherapy device according to claim 4, characterized in that, The second screen includes a second substrate layer, an anode layer, a photosensitive layer, a cathode layer, and a second encapsulation layer stacked sequentially. The photosensitive layer includes a plurality of photosensitive units, which are used to convert detection light into electrical signals. The projection of each photosensitive unit on the light-emitting layer is adjacent to one of the functional light units. The projection of the photosensitive unit on the first electrode layer is located within the cutout area.
6. The phototherapy device according to claim 5, characterized in that, The functional light unit includes one of OLED, mini LED, or micro LED, and the area of the functional light unit ranges from 0.01 mm². 2 ~10mm 2 The excitation unit includes one of OLED, mini LED, or micro LED, and the area of the excitation unit ranges from 0.01 mm². 2 ~10mm 2 .
7. The phototherapy device according to claim 5, characterized in that, The second electrode layer includes a plurality of strip-shaped second electrodes extending along the second direction, and the plurality of second electrodes are arranged sequentially at intervals along the first direction; each of the excitation light units is disposed in the region where the first electrode and the second electrode overlap, and each of the functional light units is disposed in the region where the first electrode and the second electrode overlap.
8. The phototherapy device according to claim 7, characterized in that, The area of the photosensitive unit ranges from 0.01 mm. 2 ~10mm 2 .
9. The phototherapy device according to claim 5, characterized in that, The first encapsulation layer is a thin-film encapsulation layer, the second electrode layer is a TFT driving layer, the first encapsulation layer is reused as the second substrate layer, and the anode layer, photosensitive layer, cathode layer and the second encapsulation layer are stacked sequentially on the side of the second encapsulation layer away from the light-emitting layer.
10. The phototherapy device according to claim 1, characterized in that, An adhesive layer is also provided between the first screen layer and the second screen layer, and the adhesive layer includes optical adhesive.