A wearable light therapy display device

Abstract

Disclosed is a wearable phototherapy display device. The wearable phototherapy display device comprises a display unit and a light source; the display unit has an imaging plane, which is arranged in front of a human eye; the light source emits light with a peak wavelength between 400-1400 nm, and the light emitted by the light source is directed to at least part of the periorbital region; the light source comprises a light-emitting surface, and the angle between the light-emitting surface and the imaging plane is less than 30 degrees. The wearable phototherapy display device can allow people to perform phototherapy on the periorbital region or the human eye while watching movies, playing games or performing other virtual work, and the arrangement of the light-emitting surface can better perform phototherapy on the periorbital region or the human eye without affecting the display, thereby achieving a one-stroke multi-effect, and enhancing the functionality and practicability of the electronic device.

Description

Technical Field

[0001] This invention relates to the field of display technology. Specifically, it relates to a wearable phototherapy display device with phototherapy function. Background Technology

[0002] In the mid-to-late 20th century, technologies such as Low Light Laser Treatment and Photobiomodulation (PBM) emerged, both using light as a means of treating diseases in the medical field (Michael R. Hamblin, Ying-ying Huang, Handbook of Photomedicine, CRC Press). Recent studies have shown that red to near-infrared light irradiation helps promote the regeneration of collagen and skin cells, and can be applied in areas such as anti-wrinkle cosmetics, promoting wound healing, and removing blemishes and scars (Chan Hee Nam et al., Dermatologic Surgery, 2017, 43:371-380; Daniel Barolet, Semin Cutan Med Surg, 2008, 27:227-238; Yongmin Jeon, Adv. Mater. Technol. 2018, 1700391). In vitro studies have shown that the visible to near-infrared spectral region can induce collagen synthesis in the skin. In addition, red light therapy is a useful tool for reducing redness and inflammation, and is particularly helpful in reducing signs of aging. Specific wavelengths of red light can target deep layers of the skin and help promote the regeneration of tissues such as collagen and skin cells. Red light can reduce inflammation not only on the surface of the skin but also deeper inflammation. Different wavelengths have different chromophores and have different effects on tissues. Wavelengths are usually referred to by the color associated with them, including blue, green, red, and near-infrared light. Generally speaking, the longer the wavelength, the deeper it penetrates the tissue. Figure 2a The study showed the penetration depth of light at different wavelengths into skin tissue, revealing that light with wavelengths between 600-1000 nm can penetrate the dermis to a depth of 2-4 mm below the skin (Daniel Barolet, SeminCutan Med Surg, 2008, 27:227-238). When determining the effective wavelength of a phototherapy light source, in addition to penetration depth, the absorption by cellular tissues must also be considered. At a wavelength of 600 nm, hemoglobin (Hb) in the blood is the main barrier to photon absorption; furthermore, at a wavelength of 1000 nm, water absorption becomes very strong. Figure 2bThis study demonstrates the absorption of different wavelengths of light by various physiological substances (such as water, hemoglobin, oxyhemoglobin, and melanin). It shows that the optimal wavelength window for penetration into skin tissue without damage is approximately between 600-1400 nm (Daniel Barolet, Semin Cutan Med Surg, 2008, 27:227-238). Considering the relationship between wavelength and penetration depth, red and near-infrared light with wavelengths between 600-1000 nm are the best choices for non-invasive phototherapy. Furthermore, recent research indicates that green light can treat eye diseases caused by diabetes, and similar eye masks are already commercially available (https: / / noctura.com / ).

[0003] The concept of Virtual Reality (VR) emerged as early as the 1950s. With technological advancements, VR has gradually transitioned from military to civilian use, evolving from bulky helmets to today's head-mounted glasses. Currently, people can wear VR glasses to watch movies and play games, and its ability to provide a more realistic and immersive experience has made it popular with consumers. On the other hand, Augmented Reality (AR) glasses, which enhance interaction between the virtual and real worlds, are also experiencing rapid development, similar to VR products. VR head-mounted glasses typically employ two imaging methods. One method uses two microdisplay units, each positioned directly in front of the user's eyes, or with the addition of optical lenses, to directly image the image in front of the eyes. The other method involves placing a microdisplay unit on each side of the face, then transmitting the image through waveguide lenses to the user's eyes. The imaging principle is as follows... Figure 2c As shown in (https: / / arvrjourney.com / understanding-waveguide-the-key-technology-for-augmented-reality-near-eye-display-part-ii-fe4bf3490fa). The latter method reduces the use of optical lenses, and since waveguide lenses are generally transparent, they have the potential to be used in AR glasses, making it a more promising solution. It is foreseeable that the development of VR and AR products will continue to improve. Therefore, an intuitive idea is to provide light therapy to the eyes and surrounding areas while using VR / AR glasses, further enhancing the functionality and practicality of these electronic devices.

[0004] Patent CN208511681U discloses a VR headset for improving sleep quality, which includes a phototherapy component arranged around an optical lens. Firstly, this patent only discloses arranging the phototherapy component around the optical lens, and further discloses placing the phototherapy component below and / or above or to the sides of the optical lens. It does not mention the emitting surface of the light source, nor the relationship between the imaging plane and the emitting surface. Furthermore, according to the embodiments and figures disclosed in this patent, its phototherapy component includes two LED light sources, respectively arranged around the optical lens to emit light to the pupils of each eye. Those skilled in the art will know that the two LED light sources in this application cannot form a emitting surface, which is fundamentally different from this invention. In the wearable phototherapy display device of this invention, the light source cannot be arbitrarily integrated around the optical lens. The emitting surface of the light source must be rationally arranged according to the characteristics of the imaging plane. The angle between the emitting surface of the light source and the imaging plane is less than 30 degrees, and the emitting surface is approximately parallel to the imaging plane, so as to achieve better phototherapy without affecting the display. Secondly, this patent uses a phototherapy component to emit light of a specific wavelength to stimulate the suprachiasmatic nucleus of the hypothalamus, regulating the secretion levels of cortisol and melatonin at different times to improve sleep quality. Therefore, the light emitted by its phototherapy component must be directed towards the eyes to stimulate the hypothalamus for treatment. Furthermore, the patent discloses that its phototherapy component emits blue light, which obviously interferes with the content displayed on the VR screen and cannot simultaneously achieve the functions of display and phototherapy. In contrast, the wearable phototherapy display device of this invention mainly performs phototherapy on the skin around the eyes and can simultaneously achieve the functions of display and phototherapy. Summary of the Invention

[0005] The present invention aims to provide a wearable phototherapy display device with phototherapy function to solve at least some of the above-mentioned problems.

[0006] According to one embodiment of the present invention, a wearable phototherapy display device is disclosed, comprising:

[0007] Display unit, light source;

[0008] The display unit has an imaging plane, which is positioned directly in front of the human eye.

[0009] The light source emits light with a peak wavelength between 400-1400 nm, and the light emitted by the light source is directed at at least part of the periorbital area;

[0010] The light source includes a light-emitting surface, and the angle between the light-emitting surface and the imaging plane is less than 30 degrees.

[0011] This invention discloses a wearable phototherapy display device, comprising a display unit and a light source. The display unit has an imaging plane positioned directly in front of the user's eyes. The light source emits light with a peak wavelength of 400-1400nm, and the emitted light is directed at least part of the periocular area. The light source includes a luminescent surface, and the angle between the luminescent surface and the imaging plane is less than 30 degrees. This wearable phototherapy display device allows users to perform phototherapy on the periocular area or eyes while watching movies, playing games, or engaging in other virtual activities. The placement of its luminescent surface allows for better phototherapy on the periocular area or eyes without affecting the display, achieving multiple benefits and enhancing the functionality and practicality of these electronic devices. Attached Figure Description

[0012] Figure 1a This is a schematic diagram of a single-layer OLED device structure.

[0013] Figure 1b This is a schematic diagram of a stacked OLED device structure.

[0014] Figure 2a This is a schematic diagram showing the penetration depth of light at different wavelengths into skin tissue.

[0015] Figure 2b This is a schematic diagram showing the absorption of light by different physiological substances (such as water, hemoglobin, oxyhemoglobin, and melanin) at different wavelengths.

[0016] Figure 2c This is a schematic diagram illustrating the imaging principle of transmitting light to the human eye through an optical waveguide lens in existing technology.

[0017] Figures 3a-3d This is a cross-sectional view of an OLED light-emitting panel.

[0018] Figure 4a This is a schematic diagram of a wearable phototherapy display device.

[0019] Figure 4b yes Figure 4a A schematic diagram showing the relative areas and positional relationship of the projections of the luminescent surface and the imaging plane onto the same parallel plane.

[0020] Figure 4c This is a schematic diagram of another wearable phototherapy display device.

[0021] Figures 4d-4e yes Figure 4c A schematic diagram showing the relative areas and positional relationship of the projections of the luminescent surface and the imaging plane onto the same parallel plane.

[0022] Figures 5a-5c This is a schematic diagram of an OLED light-emitting panel module.

[0023] Figure 6a This is a schematic diagram of another wearable phototherapy display device.

[0024] Figure 6b This is a schematic diagram of the fabrication of a transparent light source.

[0025] Figure 7a This is a schematic diagram of another wearable phototherapy display device.

[0026] Figure 7b This is a schematic diagram of another wearable phototherapy display device.

[0027] Figure 8a This is a schematic diagram of another wearable phototherapy display device.

[0028] Figure 8b yes Figure 8a A schematic diagram showing the relative areas and positional relationship of the projections of the luminescent surface and the imaging plane onto the same parallel plane. Detailed Implementation

[0029] As used herein, "top" means furthest from the substrate, and "bottom" means closest to the substrate. When the first layer is described as being "disposed" on the second layer, the first layer is positioned further from the substrate. Conversely, when the first layer is described as being "disposed" on the second layer, the first layer is positioned closer to the substrate. Unless it is specified that the first layer "contacts" the second layer, other layers may exist between the first and second layers. For example, even if various organic layers exist between the cathode and anode, the cathode can still be described as being "disposed" on the anode.

[0030] As used herein, the term "OLED device (cell)" includes an anode layer, a cathode layer, and one or more organic layers disposed between the anode layer and the cathode layer. An "OLED device (cell)" can be bottom-emitting (bottom-emitting), that is, emitting light from the anode side, or top-emitting (top-emitting), that is, emitting light from the cathode side, or a bifacial device that emits light from both the anode side and the cathode side simultaneously.

[0031] As used herein, the term "encapsulation layer" can refer to a thin-film encapsulation with a thickness of less than 100 micrometers, which includes one or more thin films directly deposited onto the device, or it can refer to a cover glass adhered to a substrate.

[0032] As used herein, the term "effective luminous area" refers to the area of ​​a planar surface where the anode, organic layer, and cathode, or the charge generation layer, organic layer, and cathode overlap, excluding light extraction effects.

[0033] As used herein, the term "light-emitting surface" refers to the side of a light source that emits light. For example, if the light source comprises a bottom-emitting OLED panel, then the "light-emitting surface" is the side of the substrate away from the anode; if it is a top-emitting device, then the "light-emitting surface" is the side of the encapsulation layer away from the cathode. Note that when the light source is flexible, the "light-emitting surface" can include curved surfaces. If the light source is an LED chip, it generally only forms a light-emitting point because it is a point light source; however, in a special case, if three or more LED chips are arranged in a plane and do not form a straight line, the plane containing this series of LED chips is considered the "light-emitting surface".

[0034] The term "light-emitting area of ​​an OLED light source" refers to the area of ​​the anode, organic layer, and cathode in a planar region, or the part where the charge generation layer, organic layer, and cathode overlap, as well as various light extraction effects.

[0035] As used in this article, the term "single-layer device" refers to a device having a single light-emitting layer (or multiple consecutive light-emitting layers) and a single set of hole and electron transport layers between a pair of anodes and cathodes. Such a device with a single light-emitting layer (or multiple consecutive light-emitting layers) and its associated transport layers is called a "single-layer device".

[0036] As used in this article, the term "stacked device" refers to a device structure with multiple light-emitting layers between a pair of anodes and cathodes, each of which has its own independent hole transport layer and electron transport layer. Each light-emitting layer and its associated hole transport layer and electron transport layer constitute a sub-light-emitting unit. These sub-light-emitting units are connected by charge-generating layers. A device with multiple such sub-light-emitting units is called a "stacked device".

[0037] As used herein, the term "imaging plane" refers to the plane in front of a viewer that is displayed by a display unit. This can be the display screen itself or a plane formed outside the display screen using optical elements (such as optical lenses). Note that when the image displayed by the display unit is imaged through a curved optical lens, the "imaging plane" is between the optical lens and the viewer's eye, but the resulting image is still on a plane and is therefore still considered the "imaging plane." One can hypothesize that if a piece of white paper (which does not affect the image) is placed between the optical lens and the viewer's eye, and the paper moves between them, the plane on which the complete image is displayed when the paper is the "imaging plane." For the wearable phototherapy display device in this application, when the microdisplay unit is placed on the side of the face, it can be transmitted to the eye of the person through the optical waveguide lens to form an image. At this time, the image is formed between the optical waveguide lens and the person's eye, and the image plane is called the "image plane". When the microdisplay unit is placed directly in front of the person's eye, the image plane can be the display screen plane of the microdisplay unit. Alternatively, when some optical lenses are placed directly in front of the microdisplay unit, the image is formed between the optical lenses and the person's eye, and the image plane is called the "image plane".

[0038] As used herein, the term "imaging" refers to a unique image displayed by a display unit, which can be monochrome or full-color, but must be an image with arbitrary graphic representation. An image that is merely a monotonous or repetitive graphic, such as a striped pattern or a checkered pattern, and cannot form an arbitrary graphic, cannot be considered an "imaging".

[0039] As used in this article, the term "periocular region" refers to the facial areas and combinations thereof, including the lower eyelids, inner corners of the eyes, outer corners of the eyes, upper eyelids, bridge of the nose, root of the nose, temples, forehead, and cheekbones.

[0040] As used in this article, the term "the projection of the emitting surface of the light source onto the imaging plane on the same parallel plane has an overlapping area" means that the projection of the emitting surface onto a plane parallel to the emitting surface overlaps with the projection of the imaging plane onto the same parallel plane.

[0041] As used in this article, the term "angle between the luminescent surface and the imaging plane" refers to the angle formed when the luminescent surface and the imaging plane intersect after being extended. If the luminescent surface and the imaging plane are parallel, the angle is 0 degrees.

[0042] As used herein, the term "generally parallel" means that the angle between the "imaging plane" and the "emitting surface" is less than 30 degrees, preferably less than 10 degrees. When the light source is a flexible light source, the "emitting surface" may include curved surfaces, but note that the emitting surface also includes planes. The emitting surface of a plane is "generally parallel" to the imaging plane, with an angle of less than 30 degrees, preferably less than 10 degrees; in this case, the area of ​​the "emitting surface" that is generally parallel to the "imaging plane" occupies at least 30% of the entire emitting surface, preferably at least 50%.

[0043] As used in this article, the term "total light source transmittance" represents the ratio of the intensity of any incident light beam that can pass through the entire light source and exit to the total intensity of the incident light. If the light source itself is transparent (e.g., a double-sided OLED panel), then the "total light source transmittance" is the ratio of the intensity of any incident light beam passing through the light-emitting area of ​​the light source to the total intensity of the incident light; if the light source uses a series of non-transparent light source dots arranged in a matrix, then the "total light source transmittance" is the ratio of the sum of the areas of the transparent areas within the entire light source region to the total area of ​​the light source region. For example... Figure 6b As shown, "transmittance of the light source" refers to the ratio of the sum of the areas of the blank areas 6031 to the total area of ​​the light source area 603.

[0044] As used in this article, the term "front side of the imaging plane" refers to the side of the imaging plane closer to the human eye; the term "rear side of the imaging plane" refers to the side of the imaging plane furthest from the human eye.

[0045] According to one embodiment of the present invention, a wearable phototherapy display device is disclosed, comprising:

[0046] Display unit, light source;

[0047] The display unit has an imaging plane, which is positioned directly in front of the human eye.

[0048] The light source emits light with a peak wavelength between 400-1400 nm, and the light emitted by the light source is directed at at least part of the periorbital area;

[0049] The light source includes a light-emitting surface, and the angle between the light-emitting surface and the imaging plane is less than 30 degrees.

[0050] According to one embodiment of the present invention, the angle between the light-emitting surface and the imaging plane is less than 10 degrees.

[0051] According to one embodiment of the present invention, the angle between the light-emitting surface and the imaging plane is equal to 0 degrees.

[0052] According to one embodiment of the present invention, the light source emits light with a peak wavelength between 500-1400 nm.

[0053] According to one embodiment of the present invention, the light source emits light with a peak wavelength between 600-1000 nm.

[0054] According to one embodiment of the present invention, the light source emits light with a peak wavelength between 680-1000 nm.

[0055] According to one embodiment of the present invention, the light source includes an OLED light source, and the OLED light source includes at least one OLED light-emitting panel.

[0056] According to one embodiment of the present invention, the light source includes an OLED light source, and the OLED light source includes a plurality of OLED light-emitting panels.

[0057] According to one embodiment of the present invention, the OLED light source is flexible.

[0058] According to one embodiment of the present invention, the OLED light-emitting panel includes a plurality of OLED devices (units) spaced apart from each other, such that the transmittance of the entire light source is greater than or equal to 30%.

[0059] According to one embodiment of the present invention, the OLED light-emitting panel includes a plurality of OLED devices (units) spaced apart from each other, such that the transmittance of the entire light source is greater than or equal to 50%.

[0060] According to one embodiment of the present invention, the OLED light-emitting panel includes a plurality of OLED devices (units) spaced apart from each other, such that the transmittance of the entire light source is greater than or equal to 70%.

[0061] According to one embodiment of the present invention, the plurality of OLED light-emitting panels are spaced apart from each other, such that the transmittance of the entire light source is greater than or equal to 30%.

[0062] According to one embodiment of the present invention, the plurality of OLED light-emitting panels are spaced apart from each other, such that the transmittance of the entire light source is greater than or equal to 50%.

[0063] According to one embodiment of the present invention, the plurality of OLED light-emitting panels are spaced apart from each other, such that the transmittance of the entire light source is greater than or equal to 70%.

[0064] According to one embodiment of the present invention, the OLED light source includes a top-emitting device.

[0065] According to one embodiment of the present invention, the OLED light source includes stacked devices.

[0066] According to one embodiment of the present invention, the OLED light source includes a double-sided light-emitting device.

[0067] According to one embodiment of the present invention, the wearable phototherapy display device includes a driving device that is electrically connected to a light source.

[0068] According to one embodiment of the present invention, the driving device includes one or more of the following components: power supply, charging device, Bluetooth communication device, chip, lead wire, circuit board, and switch.

[0069] According to one embodiment of the present invention, the power source comprises a battery.

[0070] According to one embodiment of the present invention, the battery is selected from any one or more of the following: thin-film battery, micro battery, button battery, chemical battery, lithium battery, and hydrogen battery.

[0071] According to one embodiment of the present invention, the driving device can be wirelessly connected to an external electronic device.

[0072] According to one embodiment of the present invention, the driving device includes a Bluetooth communication device and can wirelessly connect to an external electronic device through the Bluetooth communication device.

[0073] According to one embodiment of the present invention, the external electronic device further includes an application program (APP), which enables the external electronic device to control the switching on and / or brightness adjustment of the light source via the application program (APP).

[0074] According to one embodiment of the present invention, the driving device independently drives at least two OLED light-emitting panels.

[0075] According to one embodiment of the present invention, the driving device independently drives at least two OLED devices.

[0076] According to one embodiment of the present invention, the display unit is a microdisplay unit.

[0077] According to one embodiment of the present invention, the microdisplay unit uses one or more of OLED, micro LED and laser as the display light source.

[0078] According to one embodiment of the present invention, the wearable phototherapy display device includes a waveguide lens.

[0079] According to one embodiment of the present invention, the light-emitting surface of the light source and the projection of the imaging plane on the same parallel plane have an overlapping area.

[0080] According to one embodiment of the present invention, the portion of the area where the light-emitting surface of the light source overlaps with the imaging plane does not emit light.

[0081] According to one embodiment of the present invention, the periorbital region includes the following regions and combinations thereof: lower eyelid, inner corner of the eye, outer corner of the eye, upper eyelid, bridge of the nose, root of the nose, temple, forehead, and cheekbone.

[0082] According to one embodiment of the present invention, the light source is disposed on the front side of the imaging plane.

[0083] According to one embodiment of the present invention, the light source is disposed on the rear side of the imaging plane.

[0084] According to one embodiment of the present invention, the light source is disposed on the side of the imaging plane away from the human eye.

[0085] According to one embodiment of the present invention, the light source is disposed on the side of the imaging plane closer to the human eye.

[0086] According to one embodiment of the present invention, the display unit is electrically connected to the driving device.

[0087] According to one embodiment of the present invention, the wearable phototherapy display device is a virtual reality (VR) glasses.

[0088] According to one embodiment of the present invention, the wearable light therapy display device is an augmented reality (AR) glasses.

[0089] According to one embodiment of the present invention, the wearable phototherapy display device is a helmet with a display.

[0090] A typical single-layer OLED device 100 structure diagram is shown below. Figure 1aAs shown. The OLED device 100 includes an anode layer 101, a hole injection layer (HIL) 102, a hole transport layer (HTL) 103, an electron blocking layer (EBL) 104, a light-emitting layer (EML) 105, a hole blocking layer (HBL) 106, an electron transport layer (ETL) 107, an electron injection layer (EIL) 108, a cathode layer 109, and a capping layer (CPL) 110. In the bottom-emitting device, the anode layer 101 is a transparent or translucent material, including but not limited to ITO, IZO, MoOx (molybdenum oxide), etc., with a transparency generally greater than 50%; preferably, the transparency is greater than 70%; the cathode layer 109 is a material with high reflectivity, including but not limited to Al, Ag, etc., with a reflectivity greater than 70%; preferably, the reflectivity is greater than 90%. In top-emitting devices, the anode layer 101 is a material or combination of materials with high reflectivity, including but not limited to Ag, Ti, Cr, Pt, Ni, TiN, and combinations of the above materials with ITO and / or MoOx (molybdenum oxide), typically with a reflectivity greater than 50%; preferably, with a reflectivity greater than 80%; more preferably, with a reflectivity greater than 90%. The cathode layer 109 should be a translucent or transparent conductive material, including but not limited to MgAg alloy, MoOx, Yb, Ca, ITO, IZO, or combinations thereof, with a transparency generally greater than 30%; preferably, with a transparency greater than 50%. In bifacial light-emitting devices, both the anode layer 101 and the cathode layer 109 are transparent or translucent materials, as specifically listed above. The hole injection layer 102 can be a single material layer, such as the commonly used HATCN; the hole injection layer 102 can also be a hole transport material doped with a certain proportion of p-type conductive doped material, typically with a doping ratio not exceeding 5%, commonly between 1% and 3%. The light-emitting layer 105 typically also includes at least one host material and at least one light-emitting material, while the electron blocking layer 104 and hole blocking layer 106 are optional layers, and the capping layer 110 is not required in the bottom-emitting device. The electron transport layer 107 can be a single layer of Yb, LiQ, or LiF, or it can be formed by co-evaporation of two or more materials.

[0091] A schematic diagram of a typical stacked OLED device 200 is shown below. Figure 1bAs shown, it includes an anode layer 201, a first sub-light-emitting unit 202, a charge-generating layer (CGL) 203, a second sub-light-emitting unit 204, and a cathode layer 205. The first sub-light-emitting unit 202 and the second sub-light-emitting unit 204 may further include a series of organic layers from the hole injection layer 102 to the electron injection layer 108 in the monolayer light-emitting device 100. The light-emitting layers of the first sub-light-emitting unit 202 and the second sub-light-emitting unit 204 may be the same or different. The first sub-light-emitting unit 202 and the second sub-light-emitting unit 204 can emit light of the same color, for example, both emitting red light with a peak wavelength between 600-750 nm; the first sub-light-emitting unit 202 and the second sub-light-emitting unit 204 can also emit light of different colors, for example, the first light-emitting unit 202 emits red light, and the second light-emitting unit 204 emits near-infrared light with a peak wavelength between 750-1400 nm. In this case, the device 200 can emit both red light and near-infrared light simultaneously. The charge generation layer 203 is generally composed of an n-type material and a p-type material, and a buffer layer can also be added, as described in patent application CN112687811A. If the stacked device is a top-emitting device, a capping layer (not shown in the figure) can also be added above the cathode layer 205. Figure 2 shows a 2-unit stacked device, and a third sub-emitting unit and a second charge generation layer can be added to form a 3-unit stacked device. The fabrication of single-layer and stacked OLED devices is well known in the industry and will not be elaborated here.

[0092] One type of light source that can be used in wearable phototherapy display devices is an organic light-emitting device (OLED). A cross-sectional schematic diagram of an OLED light-emitting panel is shown. Figures 3a-3d In. Figure 3aIn this OLED light-emitting panel 300, a substrate 301, an OLED device 310, a pair of contact electrodes 303 electrically connected to the OLED device 310, an encapsulation layer 302 (exposing the contact electrodes 303), and an adhesive structure 304 connecting the pair of contact electrodes 303 to an external driving circuit. The substrate 301 can be rigid, such as glass or quartz, but is preferably flexible, including but not limited to ultrathin flexible glass, PET (polyethylene terephthalate), PEN (polyethylene naphthalate), PI (polyimide), etc. Specifically, the substrate 301 can be a material (e.g., PI material) pre-coated in solution onto a support substrate, cured, and planarized before being used for device fabrication. After device fabrication is completed, it is peeled off from the support substrate using a laser and transferred to other flexible substrates as needed. The OLED device 310 can be a bottom-emitting device or a top-emitting device; preferably, the OLED device 310 is a top-emitting device because it has higher luminous efficiency. The OLED device 310 can be a single-layer structure or a multi-layer structure. Preferably, the OLED device 310 has a multi-layer structure because it has a longer lifespan at the same brightness, and the thicker film layer is beneficial for improving production yield. The organic material in the OLED device 310 can be formed by thermal evaporation in a vacuum chamber, or it can be formed partially or entirely using solution methods, including but not limited to inkjet printing, spin coating, organic vapor jet printing (OVJP), etc. The encapsulation layer 302 can be a rigid encapsulation, such as using a cover glass to bond to the substrate with UV-cured encapsulating adhesive. Preferably, a thin-film encapsulation layer is used, with a thickness typically above 10 μm, such as a single-layer inorganic layer, or a multi-layer structure with alternating organic and inorganic thin films, formed by plasma-enhanced chemical vapor deposition (PECVD), atomic layer deposition (ALD), printing, spin coating, etc. Alternatively, the encapsulation layer 302 can also use a combination of the above two methods, that is, a cover glass encapsulation is performed on the basis of thin-film encapsulation. The contact electrode 303 can include at least one anode contact and at least one cathode contact. The front cover film 305 can be added to the aforementioned OLED light-emitting panel, such as... Figure 3bAs shown. The front cover film 305 can be a flexible printed circuit (FPC) board on which pre-designed circuitry is printed and electrically connected to the OLED device 310 via an adhesive structure 304. In another embodiment, the adhesive structure 304 can be an FPC frame, while the front cover film 305 can be a plastic film providing mechanical support. A detailed description of using an FPC board to drive an OLED light-emitting panel can be found in patent application US20190376650A1, which is incorporated herein by reference in its entirety but is not within the scope of the detailed description herein. The front cover film 305 may also include a light extraction layer. When the OLED device 310 is a top-emitting device, the front cover film 305 is transparent in the light-emitting area. The front cover film 305 can be a combination of the various forms described above. An additional thin-film encapsulation layer 306 can be coated on one or both sides of the substrate 301, such as Figure 3c As shown. An additional thin-film encapsulation layer 306 can also be coated onto the front cover film, but this is not shown in the figure here. Figure 3d In this process, a back cover film 307 is applied to the substrate 301. The back cover film 307 can serve as a mechanical support and is typically a flexible film, such as a plastic like PET. When the OLED is a bottom-emitting device, the back cover film 307 can be a light extraction layer and is transparent. The back cover film 307 can be a combination of the various forms described above. One or more such OLED light-emitting panels, when electrically connected to an external electric drive (regardless of whether they are in an on or off state), constitute an OLED light source and are one of the fundamental components of this invention.

[0093] Figure 4a A schematic diagram of a wearable phototherapy display device 400a is shown, which includes a light source 403, a driving device 404, a micro-display unit 401, and optical waveguide lenses 402. Two light sources 403 are each electrically connected to one driving device 404. The two optical waveguide lenses 402 are connected via optical paths to two micro-display units 401 positioned on the sides of the face, enabling image formation in front of the eyes 410. The imaging plane 420 is located between the optical waveguide lenses 402 and the eyes 410. Figure 4aAs shown, the imaging plane 420 is approximately parallel to the emitting surface 430 of the light source 403. Note that the position of the imaging plane 420 shown in the figure is only schematic and can be any plane between the human eye 410 and the waveguide lens 402. Note that the area of ​​the waveguide lens 402 can be larger than the area of ​​the imaging plane 420; that is, only a portion of the waveguide lens 402 may be the imaging area, while the remaining portion is only used to transmit images but cannot form an image on the imaging plane. The light source 403 is preferably an OLED light source, which can be an OLED emitting panel arranged approximately parallel to each other behind the two waveguide lenses 402, rather than surrounding the two waveguide lenses 402. That is, the light source 403 is located behind the imaging plane 420, i.e., on the side away from the human eye 410; in other words, the light source 403 is not arranged around the imaging plane 420. The light source 403 has an emitting surface 430, which is the surface of the OLED emitting panel closer to the human eye. The light-emitting surface 430 is approximately parallel to the imaging plane 420, that is, the angle between the "imaging plane" and the "light-emitting surface" is less than 30 degrees, preferably less than 10 degrees, and more preferably equal to 0 degrees. Figure 4aThe diagram schematically illustrates that the light source 403 is positioned completely parallel to the two waveguide lenses 402, meaning the angle between the "imaging plane" and the "light-emitting surface" is 0 degrees. The light-emitting surface 430 can be divided into regions 4301 and 4302. Light emitted from region 4301 is directed towards parts of the skin around the eyes, such as the lower eyelid, corners of the eyes, outer corners of the eyes, upper eyelids, bridge of the nose, root of the nose, temples, forehead, and cheekbones. This region does not overlap with the imaging plane 420; the majority of the light emitted from region 4301 is directed towards the skin around the eyes, not directly towards the eyes. Simultaneously, light emitted from region 4302 is directed towards the imaging plane 420, passes through it, and primarily targets the eye area. At this point, the projections of the light-emitting surface 430 and the imaging plane 420 onto the same parallel plane overlap, indicating that the light source 403 is positioned approximately parallel to the back of the waveguide lenses 402, rather than surrounding them. In other words, the light source 403 is not positioned around the imaging plane 420. Light source 403 emits light with a peak wavelength of 400-1400nm. It is not a display unit and cannot form an image. Microdisplay unit 401 can be fabricated on a silicon wafer, using a white light source and a filter to form red, green, and blue pixels for imaging. A preferred white light source is an OLED. Alternatively, OLEDs can be used on the silicon wafer to fabricate red, green, and blue side-by-side horizontally arranged pixels for imaging. This method offers the advantage of higher brightness. Blue micro LEDs can also be transferred and integrated onto the silicon wafer, using down-conversion and filters to achieve red, green, and blue pixels for imaging. Alternatively, red, green, and blue micro LEDs can be directly transferred and integrated onto the silicon wafer for imaging. Microdisplay unit 401 can also be a laser display, which offers even higher brightness and is particularly suitable for AR products. The optical waveguide lens can be a transparent lens with a series of micro-patterns of specific sizes on its surface. Through double reflection of light, it can transmit images from one end to the other. The fabrication and principles of the microdisplay unit and optical waveguide lens can be found in many published documents, patents, and websites (https: / / arvrjourney.com / understanding-waveguide-the-key-technology-for-augmented-reality-near-eye-display-part-ii-fe4bf3490fa), and are well-known to those in the industry, so they will not be elaborated here. The light source 403 emits light with a peak wavelength between 400-1400 nm, preferably between 500-1000 nm, more preferably between 600-1000 nm, and even more preferably between 680-1000 nm.Green light in the 500-600nm wavelength range can stimulate the eyes and improve diabetic retinopathy and macular degeneration. Light in the 600-1000nm range is an effective wavelength for red light therapy, offering benefits such as wrinkle reduction, blemish removal, and hydration. Finally, the human eye is not very sensitive to light in the 680-1000nm wavelength range, so it hardly interferes with normal display or vision. Although light in the 400-680nm wavelength range is perceptible to the human eye, the colors surrounding or within the image do not significantly affect the viewing experience when viewing static, black-and-white, or text-based images. Furthermore, in practical applications, users can turn off the video after viewing and turn on the OLED light source to emit 500-600nm light to soothe the eyes; or diabetic patients can use this wavelength to treat retinopathy or macular degeneration. Meanwhile, the light source 403 is positioned behind the optical waveguide lens 402, which is semi-transparent or even transparent. Therefore, the light emitted from the light source 403 can almost 100% penetrate the optical waveguide lens and reach the human eye and its surrounding area. Thus, such a wearable phototherapy display device can simultaneously achieve display and phototherapy functions. The driving device 404 and the light source 403 (e.g.) Figure 4a The electrical connection (shown) includes, but is not limited to, one or more of thin-film metal, transparent conductive materials, and FPC leads. The driving device 404 includes, but is not limited to, one or more of a power supply, a charging device (preferably a wireless charging device), a Bluetooth communication device, a chip, leads, a circuit board, and a switch. The power supply includes a battery, which can be selected from one or more of thin-film batteries, micro batteries, button batteries, chemical batteries, lithium batteries, and hydrogen batteries. The driving device 404 can also wirelessly connect to an external electronic device via Bluetooth and be controlled by the external electronic device, such as for switching, brightness adjustment, and zone control. The external electronic device can be a smartphone, smartwatch, tablet, laptop, computer, etc. Furthermore, it can be controlled in conjunction with an application (APP). The driving device 404 can also be integrated into the microdisplay unit 401 and controlled by the external electronic device.

[0094] Figure 4b Showing Figure 4aA schematic diagram 400b shows the relative areas and positional relationships of the projections of the emitting surface 430 of the light source 403 and the imaging plane 420 onto the same parallel plane. The light source 403 is positioned approximately parallel to the side of the optical waveguide lens 402 away from the human eye, indicating that the emitting surface 430 of the light source 403 is approximately parallel to the imaging plane 420. The emitting surface 430 of the light source 403 generates regions 4301 and 4302 for phototherapy, and the optical waveguide lens 402 generates the imaging plane 420 for display. The projections of the emitting surface 430 of the light source 403 and the imaging plane 420 onto the same parallel plane partially overlap, and the projection of the emitting surface 430 onto the same parallel plane completely covers the projection of the imaging plane 420 onto the same parallel plane. The region of the imaging plane 420 completely overlaps with region 4302 but not with region 4301. Note that since the area of ​​the optical waveguide lens 402 may be slightly larger than the area of ​​the human eye, and the area of ​​the imaging plane 420 may be smaller than the area of ​​the optical waveguide lens 402 itself, the emitting surface 430 may partially overlap with the projection of the area of ​​the optical waveguide lens 402 onto the same parallel plane. Figure 4b The area indicated by the diagonal line. Assuming the emitted light from light source 403 is directed out of the paper (“⊙” indicates out of the paper), similarly, the image projected by the waveguide lens 402 is also directed out of the paper and forms the imaging plane 420. Light source 403 can be rigid or flexible, preferably flexible, which can further reduce weight and volume, and can be closely attached to the waveguide lens 402, further compressing space. When light source 403 is a flexible light source, it can be further bent to cover facial areas such as the temples and cheeks. In this case, the emitting surface 430 will also contain a curved surface, but note that the part of the emitting surface 430 covering the human eye and the area around the eye (such as the eye socket, outer corner of the eye, and eyebrow) is still flat, and therefore is still roughly parallel to the imaging plane, or has an angle of less than 30 degrees with the imaging plane.

[0095] Figure 4b In this design, the entire area of ​​the light source 403 emits light, and its emitting surface 430 overlaps with the projection of the imaging plane 420 onto the same parallel plane (area 4302). However, considering that most of the time people wear such a wearable phototherapy display device to view images, and that if only the skin around the eyes is being treated, there is no need to emit light into the eyes. Therefore, the area where the emitting surface overlaps with the imaging plane (such as...) Figure 4a and 4b In this case, region 4302 does not emit light, or does not have an OLED light-emitting panel; that is, only region 4301 emits light. Note that in this case, most of the light emitted by region 4301 is directed towards the skin around the eyes, rather than directly towards the eyes. Figure 4cIn the schematic diagram of the wearable phototherapy display device shown, the light source 413 can be segmented, and can be divided into several sub-light-emitting areas. Preferably, the light source 413 is still an OLED light source. Figure 4d What is shown is Figure 4c This diagram illustrates the relative areas and positional relationships of the emitting surface 430 and imaging plane 420 of the light source 413 projected onto the same parallel plane. The light source 413 is divided into several sub-emitting panels 4131, 4132, 4133, and 4134. Each sub-emitting panel is electrically connected to the driving device 404. Preferably, each sub-emitting panel can be driven independently by the driving device 404. Note that since the waveguide lens 402 may be slightly larger than the area of ​​the human eye, and the area of ​​the imaging plane 420 may be smaller than the area of ​​the waveguide lens 402 itself, the emitting surface 430 of the OLED sub-emitting panel may partially overlap with the projection of the waveguide lens 402 area onto the same parallel plane. Figure 4d The area indicated by the diagonal line is in the region where the emitting surface 430 does not coincide with the imaging plane 420. Although the emitting surface 430 of the light source 413 is mainly located around the periphery of the imaging plane 420, the OLED light source is still roughly parallel to one side of the waveguide lens 402, indicating that the emitting surface 430 of the OLED light source is still roughly parallel to the imaging plane 420. Similarly, Figure 4d The OLED emitting panels 4132 and 4134 are preferably flexible, and can be bent and wrapped around the temple area on the side of the face to further expand the treatment area. Note that the emitting area of ​​the OLED emitting panel can also include the forehead. Preferably, the light source 413 can also be selected from a series of OLED emitting panels with the same layout to reduce production costs, such as... Figure 4e As shown. Figures 4d-4eThe advantage of integrating a series of flexible OLED light-emitting panels in this way is that each panel can be driven independently, or grouped according to corresponding eye areas. Panels within a group can be driven simultaneously, while panels in different groups can be driven independently. For example, panels corresponding to the outer corner of the eye and the lower eyelid can be in one group, and panels corresponding to the upper eyelid and forehead can be in another group, each driven independently. This selectable localized illumination can further reduce power consumption and save energy. Different emission wavelengths can also be selected according to the different needs of the phototherapy area. For example, emitting 600nm light can be used for whitening, as this wavelength has the most significant effect on melanin and can improve dark circles; emitting 700nm light can be used for hydration and skin rejuvenation, as this wavelength is absorbed by water in the body, achieving wrinkle reduction and firming effects; or emitting 530nm light can be used to treat macular degeneration. Such a wearable phototherapy display device can provide image display while also achieving whitening, skin rejuvenation, and eye disease treatment effects, offering multiple benefits. Note that although the light source in this invention can display luminous and non-luminous areas, or the color of one area may differ from another, such a combination cannot achieve a specific image and is still considered not to "image". The following are some methods to achieve this type of regional control:

[0096] The first approach involves designing a pixelated layout on a single, large-area flexible OLED panel, then driving each pixel independently, or grouping the pixels and driving different groups independently. The OLED panel is flexible, meaning it uses a flexible substrate and thin-film encapsulation. The pixels here typically have a light-emitting area on the order of millimeters, meaning the minimum size is greater than 1 mm. 2 Preferably greater than 5mm 2 .For example, Figure 5a A flexible OLED light-emitting panel 500, as shown, may include a flexible OLED substrate 501 on which a series of OLED devices 502 are patterned and fabricated. These devices share the same thin-film encapsulation layer 503. Each light-emitting unit is then an OLED device, and the entire flexible OLED light-emitting panel constitutes a light source. Metal wiring can be arranged on the panel simultaneously with the fabrication of the anode or cathode to electrically connect the various OLED devices 502. The method of metal wiring is well-known in the field and will not be elaborated upon here. By controlling different OLED devices through a circuit control system, different devices can emit different colors of light, or the same device can operate under different currents, thereby achieving multiple colors.

[0097] A variation of this scheme is as follows: Figure 5bThe flexible OLED light-emitting panel 510 shown includes a flexible OLED substrate 501 and a series of OLED devices 502, each with its own encapsulation layer 513, preferably a thin-film encapsulation layer. In this case, the different OLED devices 502 can be connected not only by metal wiring but also by an FPC circuit board, greatly improving conductivity and reducing circuit complexity. Similarly, these electrical connections allow for the independent driving of one or more OLED devices 502. In both cases, to emit different colors of light, different device structures can be deposited onto different OLED devices using a metal mask, particularly by changing the material of the light-emitting layer; alternatively, as described in patent applications CN111081892A and CN111081891A, all devices can use the same independent unit multi-emitting-layer structure, achieving color changes by utilizing the movement of the recombination region at different operating points.

[0098] Another approach is to arrange individual OLED light-emitting panels into an array, such as... Figure 5c As shown, each OLED light-emitting panel at this stage comprises an independent substrate 521, an OLED device 502, and an independent encapsulation layer 513. The advantage of this arrangement is that non-flexible OLED light-emitting panels and / or non-flexible encapsulation layers can be used. As long as the area of ​​each OLED light-emitting panel is small enough, the light source assembled into an array can still possess a certain degree of flexibility. However, it is preferable that each individual OLED light-emitting panel is also flexible. These individual OLED light-emitting panels can be cut from the same motherboard, for example, all using the same independent unit multi-emitting-layer structure, or they can be reassembled using devices with different structures selected from different motherboards. The advantage of this approach is that it allows for device screening, improves yield, and increases the diversity of product colors. Figure 5c The individual light-emitting panels shown can be arranged and combined as needed using FPCs or front and rear cover films to form a physically connected lattice. Specific details can be found in the method disclosed in CN208750423U, but this is not the focus of this application and will not be elaborated upon further. Similarly, these panels can be independently controlled and supplied with different operating currents. This method can be used to fabricate... Figures 4d-4e The combination of multiple OLED light-emitting panels.

[0099] Some wearable phototherapy display devices are used as AR glasses, in which case... Figures 4a-4e The light source 403 or 413 needs to be transparent or semi-transparent; in this case, an OLED light source is preferred. Then, the light source 403 or 413 can be as follows: Figures 4a-4e That way, it can be positioned after the optical waveguide lens 402, as... Figure 6aAs shown in the wearable phototherapy display device 600a, the light source 603 is positioned approximately parallel to the optical waveguide lens 602, rather than surrounding it. That is, the light source 603 is positioned in front of the imaging plane 620, closer to the human eye 610; in other words, the light source 603 is not positioned around the imaging plane 620. The micro-display unit 601 can still be positioned on either side of the human eye, forming the imaging plane 620 in front of the human eye through optical connection to the optical waveguide lens 602. The imaging plane 620 is located between the optical waveguide lens 602 and the human eye 610. Figure 6a As shown. Figure 6a The OLED light source 603 shown has a light-emitting surface 630, and the imaging plane 620 is approximately parallel to the light-emitting surface 630 of the OLED light source 603. The light-emitting surface 630 is divided into regions 6301 and 6302. Region 6301 does not coincide with the imaging plane 620, and the light emitted from it is directed towards the skin around the human eye; region 6302 coincides with the imaging plane, and the light emitted from it is directed towards the human eye. Since the projections of the light-emitting surface 630 and the imaging plane 620 onto the same parallel plane overlap, it indicates that the light source 603 is positioned approximately parallel to the front of the waveguide lens 602, rather than surrounding it; that is, the light source 603 is not positioned around the imaging plane 620. There are various methods for preparing transparent or semi-transparent light sources. For example, the light source 603 can be two OLED light-emitting panels, and the OLED devices on them can adopt a double-sided light-emitting structure, meaning that both the anode and cathode layers are made of transparent or semi-transparent materials, such as ITO for the anode layer and MgAg alloy for the cathode layer. In this way, the entire light source 603 appears transparent or semi-transparent, allowing the viewer to see the real world outside the lens while viewing the image on the imaging plane 620. Simultaneously, it can receive phototherapy from the light-emitting areas 6301 and 6302 for the periocular area and the human eye. When such a transparent light source 603... Figure 6a When positioned in front of the imaging plane 620°, it will not affect the normal viewing of the displayed image. Another method for preparing a transparent light source can be found in the inventor's previous application CN111538171A, which uses a dot matrix to arrange a series of non-double-sided light-emitting (bottom-emitting or top-emitting) OLED devices or panels, thereby generating a certain transmittance. Specifically, as shown... Figure 6bAs shown in the schematic diagram 600b, the light source 603 is composed of a series of OLED light-emitting panels or device units 6030. Preferably, OLED device units 6030 are used, which allows for the use of smaller (opaque) but denser unit light-emitting areas, leaving more blank areas 6031 for light transmission, while still providing sufficient OLED device units 6030 to emit light for phototherapy. The transmittance of the entire OLED light source, composed of OLED dot matrix or double-sided light-emitting devices, is greater than or equal to 30%, preferably greater than or equal to 50%, and more preferably greater than or equal to 70%. Note that although the light source 603 is composed of a series of OLED devices, it cannot form a specific pattern and therefore cannot "image".

[0100] A schematic diagram of another wearable phototherapy display device 700a is shown below. Figure 7a As shown, a pair of silicon-based microdisplay units 701 are positioned directly in front of the human eye 710. Since the microdisplay units 701 are typically opaque silicon-based displays, the light source 703 can be positioned approximately parallel to the microdisplay units 701 and the human eye in this case. The imaging plane can then be the display plane of the microdisplay units 701, and the emitting surface 730 of the light source 703 is approximately parallel to the imaging plane. If the wearable phototherapy display device 700a also uses optical lenses 702 (optionally) positioned directly in front of the microdisplay units 701, i.e., optical lenses 702 are positioned between the microdisplay units 701 and the human eye 710, then the imaging plane 720 is located between the optical lenses 702 and the human eye 710, and the imaging plane 720 is also approximately parallel to the emitting surface 730 of the light source 703. Figure 7a As shown. At this time, the light source 703 can be a transparent panel made using a double-sided light-emitting device, or it can be as shown... Figure 6b The transparent panel shown is formed using a dot matrix. Of course, it can also be made using... Figure 7b The wearable phototherapy display device 700b shown has a structure in which the light source 713 does not emit light in the area coinciding with the imaging plane 720, or no light source is provided. Figure 7b Compared with the above Figures 4c-4e The description is similar and will not be repeated here.

[0101] A schematic diagram of another wearable phototherapy display device 800a is shown below. Figure 8a As shown, it includes a microdisplay unit 801, a light source 803, and a driving device 804. This wearable phototherapy display device directly images onto the microdisplay unit 801, at which point the imaging plane 820 is the display screen plane of the microdisplay unit 801. The light source 803 is disposed in the peripheral area of ​​the microdisplay unit 801, and the light source 803 includes a light-emitting surface 830, which is approximately parallel to the imaging plane 820. The light emitted by the light source 803 (such as...) Figure 8a(As indicated by the middle arrow 8301) the light is directed toward the periocular region of the human eye 810. The light source 803 may further comprise a series of sub-light-emitting panels 8031, 8032, 8033, and 8034, such as... Figure 8b As shown. These sub-light-emitting panels are integrated around the microdisplay unit 801, and the light-emitting surfaces of these sub-light-emitting panels are generally parallel to the imaging plane 820. The light emitted by their light sources 803 is directed towards the skin around the eyes, not towards the eyes. At this time, the imaging plane 820 and the light-emitting surface 830 of the light source 803 are not substantially overlapping. The light source 803 is electrically connected to the driving device 804. Preferably, the driving device 804 can independently control the sub-light-emitting panels 8031-8034. Note that the driving device 804 can also simultaneously provide driving for the microdisplay unit 801. Also preferably, a series of sub-light-emitting panels can have the same layout to save costs.

[0102] The wearable phototherapy display device provided by this invention includes a display unit and a light source. The light source emits light with a peak wavelength between 400-1400nm, and the emitted light is directed at least part of the periocular area. The light source includes a emitting surface, and the display unit has an imaging plane. The angle between the emitting surface and the imaging plane is less than 30 degrees, preferably less than 10 degrees. More preferably, the angle is 0 degrees. The wearable phototherapy display device may include a micro-display unit, and in particular, may include a waveguide lens. In this case, the micro-display unit itself can be positioned on the side of the face, and the image is transmitted to the front of the eyes through the waveguide lens. The light source is preferably an OLED light source, and may further include one or more OLED emitting panels or devices, preferably flexible panels or devices, to further reduce weight and volume, and can be bent and covered to the side of the face, such as the temple area. The OLED light source can also be made transparent, suitable for integration into AR glasses. The light source can be integrated on the side of the imaging plane away from the eyes, emitting light towards the periocular area and the eyes. Alternatively, the light source can be integrated into the imaging plane on the side closest to the human eye. In this case, preferably, the overlapping area of ​​the light-emitting surface of the light source and the imaging plane does not emit light, but only at the periphery of the imaging plane. Alternatively, the light source can be integrated into the imaging plane on the side closest to the human eye, but the overlapping area uses a transparent structure with double-sided light emission, or a dot matrix pattern with single-sided light emission. The light source can also be integrated into the peripheral area of ​​the micro-display unit, emitting light only in the peripheral area of ​​the imaging plane to provide phototherapy to the periocular area. Such a wearable display device can simultaneously achieve display and phototherapy functions, allowing people to perform phototherapy on the skin around the eyes or the eyes while watching movies, playing games, or engaging in other virtual work. If the emitted light is deep red and near-infrared light in the 680-1000nm range, it is difficult for the human eye to perceive, thus not affecting the normal use of the screen. Of course, one can also choose to wear such a display device directly, illuminating light between 400-700nm for other treatments without watching images, or simply viewing some static or text-based images, thus achieving multiple benefits in one go.

[0103] It should be understood that the various embodiments described herein are merely examples and are not intended to limit the scope of the invention. Therefore, as will be apparent to those skilled in the art, the claimed invention may include variations of the specific embodiments and preferred embodiments described herein. Many of the materials and structures described herein can be substituted with other materials and structures without departing from the spirit of the invention. It should be understood that various theories regarding why the invention works are not intended to be limiting.

Claims

1. A wearable phototherapy display device, comprising: Display unit, light source; The display unit has an imaging plane, which is positioned directly in front of the human eye. The light source emits light with a peak wavelength between 680 and 1000 nm, and the light emitted by the light source is directed at at least part of the periorbital area; The light source includes a light-emitting surface, and the angle between the light-emitting surface and the imaging plane is less than 30 degrees; The light source is positioned on the front or rear side of the imaging plane; The light-emitting surface of the light source and the projection of the imaging plane onto the same parallel plane have an overlapping area.

2. The wearable phototherapy display device as claimed in claim 1, wherein the light source comprises an OLED light source, and the OLED light source comprises at least one OLED light-emitting panel.

3. The wearable phototherapy display device as described in claim 2, wherein the OLED light source comprises a plurality of OLED light-emitting panels.

4. The wearable phototherapy display device as described in claim 2, wherein the OLED light source is flexible.

5. The wearable phototherapy display device as described in claim 2, wherein the OLED light-emitting panel comprises a plurality of OLED devices, the plurality of OLED devices being spaced apart from each other, such that the transmittance of the entire light source is greater than or equal to 30%.

6. The wearable phototherapy display device as described in claim 5, wherein the OLED light-emitting panel comprises a plurality of OLED devices, the plurality of OLED devices being spaced apart from each other, such that the transmittance of the entire light source is greater than or equal to 50%.

7. The wearable phototherapy display device as claimed in claim 5, wherein the OLED light-emitting panel comprises a plurality of OLED devices, the plurality of OLED devices being spaced apart from each other, such that the transmittance of the entire light source is greater than or equal to 70%.

8. The wearable phototherapy display device as claimed in claim 2, wherein the OLED light source comprises a top-emitting device, and / or a stacked device, and / or a double-sided light-emitting device.

9. The wearable phototherapy display device as described in claim 1 or 2, wherein the wearable phototherapy display device includes a driving device, the driving device being electrically connected to a light source.

10. The wearable phototherapy display device as claimed in claim 9, wherein the driving device comprises one or more of the following components: power supply, charging device, Bluetooth communication device, chip, lead wire, circuit board, and switch.

11. The wearable phototherapy display device of claim 10, wherein the power source comprises a battery.

12. The wearable phototherapy display device of claim 11, wherein the battery is selected from one or more of the following: thin-film battery, micro battery, button battery, chemical battery, lithium battery, hydrogen battery.

13. The wearable phototherapy display device as described in claim 9, wherein the driving device is wirelessly connected to an external electronic device.

14. The wearable phototherapy display device as claimed in claim 13, wherein the driving device includes a Bluetooth communication device and is capable of wirelessly connecting to an external electronic device via the Bluetooth communication device.

15. The wearable phototherapy display device of claim 13, wherein the external electronic device further includes an application (APP), the external electronic device being able to control the switching on and / or brightness adjustment of the light source through the application (APP).

16. The wearable phototherapy display device as claimed in claim 9, wherein the driving device independently drives at least two OLED light-emitting panels.

17. The wearable phototherapy display device as claimed in claim 1, wherein the display unit is a microdisplay unit.

18. The wearable phototherapy display device of claim 17, wherein the microdisplay unit uses any one or more of OLED, micro LED and laser as the display light source.

19. The wearable phototherapy display device as claimed in claim 1, wherein the wearable phototherapy display device comprises a waveguide lens.

20. The wearable phototherapy display device as claimed in claim 19, wherein the light-emitting surface of the light source and the projection of the imaging plane on the same parallel plane have an overlapping area, and the light source is located behind the imaging plane.

21. The wearable phototherapy display device as claimed in claim 1, wherein the portion of the overlapping area between the light-emitting surface of the light source and the imaging plane does not emit light.

22. The wearable phototherapy display device as claimed in claim 1, wherein the periocular region includes the following regions and combinations thereof: lower eyelid, corner of the eye, outer corner of the eye, upper eyelid, bridge of the nose, root of the nose, temple, forehead, and cheekbone.

23. The wearable phototherapy display device as described in claim 9, wherein the display unit is electrically connected to the driving device.

24. The wearable phototherapy display device as claimed in claim 1, wherein the wearable phototherapy display device is a virtual reality (VR) glasses, or an augmented reality (AR) glasses, or a helmet with a display.

Images