Flexible light-emitting panel, preparation method thereof, and beauty instrument

Abstract

A flexible light-emitting panel includes a first light-emitting area and a second light-emitting area. The second light-emitting area is located on at least one side of the first light-emitting area. The first light-emitting area includes a plurality of first pixel units, and the second light-emitting area includes a plurality of second pixel units. A single first pixel unit includes at least one first blue light unit, and a single second pixel unit includes at least one second blue light unit. The first and second blue light units are configured to emit blue light. The blue light emitting area of a single first pixel unit is larger than the blue light emitting area of a single second pixel unit.

Description

Technical Field

[0001] This article relates to but is not limited to the field of display technology, and in particular to a flexible light-emitting panel, a preparation method thereof, and a beauty instrument. Background Art

[0002] Phototherapy devices can perform various cosmetic procedures on the skin by emitting different colors of light, such as whitening, acne removal, and blackhead removal. In some technologies, these devices include light-emitting diodes (LEDs), which illuminate the skin. However, LEDs are point light sources, and the intensity of light emitted by these devices varies depending on the user's skin, resulting in uneven illumination and affecting the cosmetic effect. Summary of the Invention

[0003] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0004] Embodiments of the present disclosure provide a flexible light-emitting panel, a method for manufacturing the same, and a beauty instrument.

[0005] In one aspect, embodiments of the present disclosure provide a flexible light-emitting panel, comprising: a first light-emitting region and a second light-emitting region; the second light-emitting region is located on at least one side of the first light-emitting region. The first light-emitting region includes: a plurality of first pixel units; the second light-emitting region includes: a plurality of second pixel units; a single first pixel unit includes: at least one first blue light unit; a single second pixel unit includes: at least one second blue light unit; the first and second blue light units are configured to emit blue light. The blue light emission area of a single first pixel unit is larger than the blue light emission area of a single second pixel unit.

[0006] In some exemplary embodiments, at least one first pixel unit further includes: at least one first light-emitting unit configured to emit a first color light, wherein the wavelength range of the first color light is different from the wavelength range of the blue light. At least one second pixel unit further includes: at least one second light-emitting unit configured to emit a second color light, wherein the wavelength range of the second color light is different from the wavelength range of the blue light.

[0007] In some exemplary embodiments, an arrangement of the first blue light unit and the first light emitting unit of the first pixel unit is different from an arrangement of the second blue light unit and the second light emitting unit of the second pixel unit.

[0008] In some exemplary embodiments, the total area of the first blue light units of the first pixel unit is larger than the area of any first light emitting unit, and the total area of the second blue light units of the second pixel unit is substantially the same as the area of any second light emitting unit.

[0009] In some exemplary embodiments, the at least one first light-emitting unit of the first pixel unit includes: a first red light unit, a first yellow light unit, and a first infrared light unit; the first red light unit is configured to emit red light, the first yellow light unit is configured to emit yellow light, and the first infrared light unit is configured to emit infrared light. Within the first pixel unit, the first red light unit, the first yellow light unit, and the first infrared light unit are arranged sequentially along a first direction, and the first blue light unit is located on the same side of the first red light unit, the first yellow light unit, and the first infrared light unit along a second direction, with the first direction intersecting the second direction. Alternatively, the first pixel unit includes three first blue light units, and within the first pixel unit, the first red light unit, the first blue light unit, the first yellow light unit, the first blue light unit, the first infrared light unit, and the first blue light unit are arranged sequentially.

[0010] In some exemplary embodiments, the at least one second light-emitting unit of the second pixel unit includes: a second red light unit, a second yellow light unit, and a second infrared light unit; the second red light unit is configured to emit red light, the second yellow light unit is configured to emit yellow light, and the second infrared light unit is configured to emit infrared light. Within the second pixel unit, the second red light unit, the second yellow light unit, the second blue light unit, and the second infrared light unit are arranged sequentially along a direction, or in a 2*2 array.

[0011] In some exemplary embodiments, the wavelength of the red light is in the range of 625 nm to 670 nm; the wavelength of the yellow light is in the range of 570 nm to 590 nm; and the wavelength of the infrared light is in the range of 850 nm to 940 nm.

[0012] In some exemplary embodiments, the blue light has a wavelength ranging from 405 nanometers to 480 nanometers.

[0013] In some example embodiments, the first blue light unit includes an OLED that emits blue light, and the second blue light unit includes an OLED that emits blue light.

[0014] In some exemplary embodiments, the first light emitting unit includes an OLED that emits a first color light; or, the first light emitting unit includes an OLED that emits blue light, and a first color quantum dot layer located on a light emitting side of the OLED that emits blue light.

[0015] In some exemplary embodiments, the second light emitting unit includes an OLED that emits a second color light; or the second color light unit includes an OLED that emits blue light and a second color quantum dot layer located on a light emitting side of the OLED that emits blue light.

[0016] In some exemplary embodiments, the flexible light-emitting panel includes: a base substrate, and a wiring layer and a light-emitting structure layer disposed on the base substrate; or the flexible light-emitting panel includes: a base substrate, and a wiring layer, a light-emitting structure layer, and a quantum dot layer disposed on the base substrate. The light-emitting structure layer includes: an anode layer, a pixel definition layer, a light-emitting layer, and a cathode layer located on a side of the wiring layer away from the base substrate; the wiring layer includes multiple wirings, and the light-emitting units connected to the anodes of the same wirings have the same color.

[0017] In some exemplary embodiments, the first light emitting region is T-shaped.

[0018] On the other hand, an embodiment of the present disclosure provides a beauty instrument comprising the flexible light-emitting panel as described above.

[0019] On the other hand, an embodiment of the present disclosure provides a method for preparing a flexible light-emitting panel, which is used to prepare the flexible light-emitting panel as described above, the method comprising: forming a plurality of first pixel units in a first light-emitting region, and forming a plurality of second pixel units in a second light-emitting region. The second light-emitting region is located on at least one side of the first light-emitting region; a single first pixel unit includes at least one first blue light unit, and a single second pixel unit includes at least one second blue light unit; the first blue light unit and the second blue light unit are configured to emit blue light. The blue light emitting area of the single first pixel unit is larger than the blue light emitting area of the single second pixel unit.

[0020] Still other aspects will become apparent upon reading and understanding the accompanying drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are intended to provide a further understanding of the technical solutions of the present disclosure and constitute part of the specification. Together with the embodiments of the present disclosure, they are used to explain the technical solutions of the present disclosure and do not constitute a limitation of the technical solutions of the present disclosure. The shapes and sizes of one or more components in the accompanying drawings do not reflect the actual scale and are intended only to illustrate the contents of the present disclosure.

[0022] Figure 1 is a schematic diagram of a flexible light-emitting panel according to at least one embodiment of the present disclosure;

[0023] Figure 2A is a schematic diagram of a first pixel unit in a first light-emitting region of at least one embodiment of the present disclosure;

[0024] Figure 2B is a schematic diagram of a second pixel unit in a second light-emitting region of at least one embodiment of the present disclosure;

[0025] Figure 3 is a top view of a flexible light-emitting panel according to at least one embodiment of the present disclosure;

[0026] Figure 4 is a partial cross-sectional schematic diagram of a flexible light-emitting panel according to at least one embodiment of the present disclosure;

[0027] Figure 5A Another schematic diagram of a first pixel unit in a first light-emitting region according to at least one embodiment of the present disclosure;

[0028] Figure 5B Another schematic diagram of a second pixel unit in a second light-emitting region according to at least one embodiment of the present disclosure;

[0029] Figure 6 is another partial cross-sectional schematic diagram of the flexible light-emitting panel according to at least one embodiment of the present disclosure;

[0030] Figure 7A A schematic diagram of a quantum dot layer in a first light-emitting region according to at least one embodiment of the present disclosure;

[0031] Figure 7B A schematic diagram of a quantum dot layer in a second light-emitting region according to at least one embodiment of the present disclosure;

[0032] Figure 8 is another partial cross-sectional schematic diagram of the flexible light-emitting panel according to at least one embodiment of the present disclosure;

[0033] Figure 9 A schematic diagram of a light-emitting structure layer in a second light-emitting region according to at least one embodiment of the present disclosure;

[0034] Figure 10 A schematic diagram of a quantum dot layer in a second light-emitting region according to at least one embodiment of the present disclosure;

[0035] Figure 11 Schematic diagram of a beauty device according to at least one embodiment of the present disclosure. DETAILED DESCRIPTION

[0036] The following will describe in detail the embodiments of the present disclosure in conjunction with the accompanying drawings. The embodiments can be implemented in a variety of different forms. A person skilled in the art can easily understand that the method and content can be transformed into one or more forms without departing from the purpose and scope of the present disclosure. Therefore, the present disclosure should not be interpreted as being limited to the contents described in the following embodiments. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other in any manner.

[0037] In the drawings, the size of one or more components, layer thicknesses, or regions may be exaggerated for clarity. Therefore, one embodiment of the present disclosure is not necessarily limited to these dimensions, and the shapes and sizes of one or more components in the drawings do not reflect true proportions. Furthermore, the drawings schematically illustrate idealized examples, and one embodiment of the present disclosure is not limited to the shapes or values shown in the drawings.

[0038] In the present disclosure, ordinal numbers such as "first," "second," and "third" are provided to avoid confusion among constituent elements, and are not intended to limit the number. In the present disclosure, "plurality" refers to a number of two or more.

[0039] In this disclosure, for convenience, words and phrases indicating orientation or positional relationships, such as "middle," "upper," "lower," "front," "back," "vertical," "horizontal," "top," "bottom," "inside," and "outside," are used to illustrate the positional relationships of constituent elements with reference to the accompanying drawings. This is merely for the convenience of describing this specification and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as a limitation of this disclosure. The positional relationships of constituent elements are appropriately changed according to the direction in which the constituent elements are described. Therefore, the words and phrases are not limited to those described in the specification and can be appropriately replaced according to the circumstances.

[0040] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate piece, or a connection between the two elements. For those of ordinary skill in the art, the meanings of the above terms in the present disclosure can be understood according to the circumstances. Among them, "electrical connection" includes the situation where constituent elements are connected together through an element with some electrical function. There is no special restriction on "elements with some electrical function" as long as they can transmit electrical signals between connected constituent elements. Examples of "elements with some electrical function" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, and other elements with one or more functions.

[0041] In this disclosure, a transistor refers to a device comprising at least three terminals: a gate electrode (gate), a drain electrode, and a source electrode. A transistor has a channel region between a drain electrode (drain electrode terminal, drain region, or drain) and a source electrode (source electrode terminal, source region, or source), and current can flow through the drain electrode, the channel region, and the source electrode. In this disclosure, the channel region refers to the region through which current primarily flows.

[0042] In this disclosure, to distinguish the two electrodes of a transistor other than the gate electrode, one electrode is referred to as the first electrode and the other electrode is referred to as the second electrode. The first electrode can be a source electrode or a drain electrode, and the second electrode can be a drain electrode or a source electrode. In addition, the gate electrode of the transistor is referred to as the control electrode. In cases where transistors with opposite polarity are used or where the direction of current changes during circuit operation, the functions of the "source electrode" and the "drain electrode" are sometimes interchanged. Therefore, in this disclosure, the "source electrode" and the "drain electrode" can be interchanged.

[0043] In this disclosure, "parallel" refers to a state where the angle formed by two straight lines is greater than -10° and less than 10°, and thus includes a state where the angle is greater than -5° and less than 5°. Furthermore, "perpendicular" refers to a state where the angle formed by two straight lines is greater than 80° and less than 100°, and thus includes a state where the angle is greater than 85° and less than 95°.

[0044] In this disclosure, the terms "film" and "layer" may be interchanged. For example, "conductive layer" may be replaced with "conductive film." Similarly, "insulating film" may be replaced with "insulating layer."

[0045] The terms “approximately”, “substantially” and “approximately” in the present disclosure do not strictly define the limits and allow for errors in process and measurement.

[0046] An embodiment of the present disclosure provides a flexible light-emitting panel, comprising a first light-emitting area and a second light-emitting area. The second light-emitting area is located on at least one side of the first light-emitting area. The first light-emitting area includes a plurality of first pixel units. The second light-emitting area includes a plurality of second pixel units. A single first pixel unit includes at least one first blue light unit, and a single second pixel unit includes at least one second blue light unit. The first blue light unit and the second blue light unit are configured to emit blue light. The blue light emitting area of the single first pixel unit is larger than the blue light emitting area of the second pixel unit.

[0047] The flexible light-emitting panel provided in this embodiment, by providing a first light-emitting area and a second light-emitting area with different light output, can meet the needs of different lighting scenarios. For example, the zoned flexible light-emitting panel provided in this embodiment can be used for facial beauty treatments, providing different lighting treatments tailored to the skin characteristics of different facial areas.

[0048] In some exemplary embodiments, the number of first blue light cells in a first pixel unit and the number of second blue light cells in a second pixel unit may be the same, and the area of a single first blue light cell may be larger than the area of a single second blue light cell. Alternatively, the number of first blue light cells in a first pixel unit may be larger than the number of second blue light cells in a second pixel unit, such that the total area of the first blue light cells in a single first pixel unit is larger than the total area of the second blue light cells in a single second pixel unit. However, this embodiment is not limited to this.

[0049] In some exemplary embodiments, at least one first pixel unit includes: a first blue light unit and at least one first light-emitting unit, the first light-emitting unit being configured to emit a first color light, the wavelength range of the first color light being different from the wavelength range of the blue light emitted by the first blue light unit. At least one second pixel unit includes: a second blue light unit and at least one second light-emitting unit. The second light-emitting unit is configured to emit a second color light, the wavelength range of the second color light being different from the wavelength range of the blue light emitted by the second blue light unit. This embodiment does not limit the number of first light-emitting units included in the first pixel unit and the number of second light-emitting units included in the second pixel unit.

[0050] In some exemplary embodiments, the arrangement of the first blue light unit and the first light-emitting unit of the first pixel unit is different from the arrangement of the second blue light unit and the second light-emitting unit of the second pixel unit. However, this embodiment is not limited to this. For example, the arrangement of the multiple light-emitting units in the first pixel unit and the second pixel unit can be substantially the same.

[0051] In some exemplary embodiments, the total area of the first blue light units of the first pixel unit may be larger than the area of any first light unit, and the total area of the second blue light units of the second pixel unit may be substantially the same as the area of any second light unit.

[0052] In some exemplary embodiments, at least one first light-emitting unit of the first pixel unit may include: a first red light unit, a first yellow light unit, and a first infrared light unit. The first red light unit is configured to emit red light, the first yellow light unit is configured to emit yellow light, and the first infrared light unit is configured to emit infrared light. Within the first pixel unit, the first red light unit, the first yellow light unit, and the first infrared light unit may be arranged in sequence along the first direction, and the first blue light unit may be located on the same side of the first red light unit, the first yellow light unit, and the first infrared light unit along the second direction. The first direction intersects the second direction. Alternatively, the first pixel unit may include three first blue light units, and within the first pixel unit, the first red light unit, the first blue light unit, the first yellow light unit, the first blue light unit, the first infrared light unit, and the first blue light unit are arranged in sequence. However, this embodiment is not limited to this. For example, the first pixel unit may include a light-emitting unit that emits light in two or three wavelength bands.

[0053] In some exemplary embodiments, at least one second light-emitting unit of the second pixel unit may include: a second red light unit, a second yellow light unit, and a second infrared light unit. The second red light unit is configured to emit red light, the second yellow light unit is configured to emit yellow light, and the second infrared light unit is configured to emit infrared light. Within the second pixel unit, the second red light unit, the second yellow light unit, the second blue light unit, and the second infrared light unit may be arranged sequentially in one direction, or in a 2*2 array. However, this embodiment is not limited to this. For example, the second pixel unit may include a light-emitting unit that emits two or three wavelength bands of light.

[0054] In some exemplary embodiments, the first blue light unit and the second blue light unit may include a light emitting device (eg, an organic light emitting diode (OLED)) that emits blue light.

[0055] In some exemplary embodiments, the first light-emitting unit may include a light-emitting device (e.g., an OLED) that emits light of a first color; alternatively, the first light-emitting unit may include an OLED that emits blue light and a first-color quantum dot layer located on the light-emitting side of the blue-emitting OLED. The second light-emitting unit may include an OLED that emits light of a second color; alternatively, the second light-emitting unit may include an OLED that emits blue light and a second-color quantum dot layer located on the light-emitting side of the blue-emitting OLED. In other words, the first and second light-emitting units may be light-emitting devices that directly emit corresponding colors, or the corresponding quantum dot layers may be excited by the blue light-emitting device to emit corresponding light. For example, if the first light-emitting unit emits red light, the first-color quantum dot layer may be a red quantum dot layer; if the second light-emitting unit emits red light, the second-color quantum dot layer may be a red quantum dot layer. However, this embodiment is not limited to this. Compared to using LEDs as light-emitting devices, the use of OLEDs in this embodiment can provide lower surface temperatures, protecting skin from damage, and more uniform illumination, achieving surface illumination.

[0056] The following description uses a flexible light-emitting panel for facial beauty as an example. However, this embodiment is not limited thereto. For example, the flexible light-emitting panel can be used for beauty treatments on other parts of the body, such as arms.

[0057] Figure 1 FIG is a schematic diagram of a flexible light-emitting panel according to at least one embodiment of the present disclosure. Figure 1 As shown, the outer contour of the flexible light-emitting panel 10 of this embodiment can be an elliptical shape, similar to the outer contour of a human face, so that the human face can be covered when in use, and the light emitted can illuminate the human face to achieve beauty. The flexible light-emitting panel 10 has multiple avoidance holes, for example, it can include: two eye avoidance holes K1 and K2, a nose avoidance hole K3 and a mouth avoidance hole K4. In some examples, the nose avoidance hole K3 and the mouth avoidance hole K4 can be connected. The eye avoidance holes K1 and K2 can serve as light holes for the user's eyes, without affecting the user's other activities during use, making it convenient for the user to perform beauty in different occasions and increasing practicality. The nose avoidance hole K3 and the mouth avoidance hole K4 can serve as ventilation holes for the mouth and nose, which can increase the air permeability of the flexible light-emitting panel, reduce the user's feeling of stuffiness during use, and improve the user experience.

[0058] In some exemplary embodiments, Figure 1As shown, the flexible light-emitting panel 10 may include a light-emitting area and a peripheral area located on at least one side of the light-emitting area. For example, the light-emitting area may be elliptical or circular. The peripheral area may be located around or on one side of the light-emitting area. The light-emitting area may include: a first light-emitting area 11 and a second light-emitting area 12. The second light-emitting area 12 surrounds the first light-emitting area 11. In this example, the first light-emitting area 11 may be T-shaped. When using a flexible light-emitting panel, the first light-emitting area 11 may cover the T-zone of a human face. The T-zone of a human face includes the oily areas of the forehead and nose. However, this embodiment is not limited to this.

[0059] In some exemplary embodiments, the first light-emitting region 11 may include a plurality of first pixel units, and the second light-emitting region 12 may include a plurality of second pixel units. The first pixel unit may include a first blue light unit and at least one first light-emitting unit, and the second pixel unit may include a second blue light unit and at least one second light-emitting unit. The first light-emitting unit is configured to emit light other than blue light, and the second light-emitting unit is configured to emit light other than blue light. The blue light emitting area of a single first pixel unit is larger than the blue light emitting area of a single second pixel unit.

[0060] In some examples, relevant research shows that different wavelengths of light can have different cosmetic effects. For example, blue light with a wavelength range of 405 nanometers (nm) to 480nm can penetrate the skin's Propionibacterium acnes, quickly eliminate acne pustules, and simultaneously inhibit sebaceous gland secretion, reduce the number of acne and inflammatory skin lesions, and promote tissue repair. Red light with a wavelength range of 625nm to 670nm can improve the microcirculation of the skin's blood and lymphatic systems, stimulate mitochondrial activity in cells, stimulate fibroblasts to produce collagen, activate the skin to accelerate blood circulation, and can remove wrinkles and moisturize the skin from within. It is called bioactive light. Yellow light with a wavelength range of 570nm to 590nm can fight premature aging, prevent rough skin, and improve the environment of sensitive skin and aging skin. Infrared light with a wavelength range of 850nm to 940nm can remove wrinkles and lighten spots, and improve the skin environment. However, this embodiment does not limit the wavelength range of the above light and can be adjusted according to the development of medical research. Because different areas of the face have different skin characteristics, this embodiment divides the light-emitting areas to provide targeted lighting for different skin characteristics, thereby improving the user experience. For example, the T-zone of the face can be treated with more blue light, while the rest of the face can be treated with a uniform light output of multiple wavelengths.

[0061] Figure 2A Schematic diagram of a first pixel unit in a first light-emitting region according to at least one embodiment of the present disclosure. Figure 2B Schematic diagram of a second pixel unit in a second light-emitting region according to at least one embodiment of the present disclosure.

[0062] In some exemplary embodiments, Figure 2A As shown, the first pixel unit may include: a first blue light unit 11a and three first light-emitting units (i.e., a first red light unit 11b, a first yellow light unit 11c, and a first infrared light unit 11d). The first blue light unit 11a is configured to emit blue light in a wavelength range of 405nm to 480nm, the first red light unit 11b is configured to emit red light in a wavelength range of 625nm to 670nm, the first yellow light unit 11c is configured to emit yellow light in a wavelength range of 570nm to 590nm, and the first infrared light unit 11d is configured to emit infrared light in a wavelength range of 850nm to 940nm. The first red light unit 11b, the first yellow light unit 11c, and the first infrared light unit 11d are arranged sequentially along a first direction D1, and the first blue light unit 11a is located on the same side of the first red light unit 11b, the first yellow light unit 11c, and the first infrared light unit 11d along a second direction D2. The first direction D1 intersects the second direction D2. For example, the first direction D1 is perpendicular to the second direction D2. The area of the first blue light unit 11a is larger than the area of the first red light unit 11b. The areas of the first red light unit 11b, the first yellow light unit 11c, and the first infrared light unit 11d can be substantially the same, so that the first light-emitting area provides more blue light, providing targeted care for the T-zone of the face.

[0063] In some exemplary embodiments, Figure 2B As shown, the second pixel unit may include: a second blue light unit 12a and three second light-emitting units (i.e., a second red light unit 12b, a second yellow light unit 12c, and a second infrared light unit 12d). The second blue light unit 12a is configured to emit blue light with a wavelength range of 405nm to 480nm, the second red light unit 12b is configured to emit red light with a wavelength range of 625nm to 670nm, the second yellow light unit 12c is configured to emit yellow light with a wavelength range of 570nm to 590nm, and the second infrared light unit 12d is configured to emit infrared light with a wavelength range of 850nm to 940nm. The second red light unit 12b, the second yellow light unit 12c, the second blue light unit 12a, and the second infrared light unit 12d are arranged in a 2*2 array. The second red light unit 12b and the second yellow light unit 12c are arranged in the same row, the second blue light unit 12a and the second infrared light unit 12d are arranged in the same row, the second red light unit 12b and the second blue light unit 12a are arranged in the same column, and the second yellow light unit 12c and the second infrared light unit 12d are arranged in the same column. However, this embodiment is not limited to this. For example, the positions of the second red light unit, the second yellow light unit, the second blue light unit, and the second infrared light unit can be interchanged.

[0064] In some exemplary embodiments, Figure 2BAs shown, the areas of the second blue light unit 12a, the second red light unit 12b, the second yellow light unit 12c and the second infrared light unit 12d may be substantially the same to achieve uniform light distribution in the second light emitting area.

[0065] In some exemplary embodiments, Figure 2A and Figure 2B As shown, the area of the first blue light unit 11a can be larger than the area of the second blue light unit 12a. In other words, the blue light emitting area of a single first pixel unit is larger than the blue light emitting area of a single second pixel unit, so as to provide more blue light care for the T zone of the face.

[0066] In this example, the first pixel unit and the second pixel unit each include light-emitting units for four wavelength bands. However, this embodiment is not limited to this. In some examples, the first pixel unit and the second pixel unit can include light-emitting units for one, two, or three wavelength bands, depending on actual needs. Alternatively, the light-emitting units included in the first pixel unit and the second pixel unit can emit light with different wavelength ranges.

[0067] Figure 3 Schematic top view of a flexible light-emitting panel according to at least one embodiment of the present disclosure. Figure 3 FIG. 1 shows a partial area of the first light emitting region 11 and the second light emitting region 12. In some examples, such as Figure 3 As shown, the multiple first red light units 11b and the second red light units 12b arranged in the first direction D1 are electrically connected by the same trace (e.g., trace 310); the multiple first yellow light units 11c and the second yellow light units 12c arranged in the first direction D1 are electrically connected by the same trace; the multiple first infrared light units 11d and the second infrared light units 12d arranged in the first direction D1 are electrically connected by the same trace; and the multiple first blue light units 11a and the second blue light units 12a arranged in the first direction D1 are electrically connected by the same trace. In other words, the light-emitting units connected to the same trace have the same color.

[0068] Figure 4 FIG. 1 is a partial cross-sectional view of a flexible light-emitting panel according to at least one embodiment of the present disclosure. Figure 4 As shown, in the direction normal to the film layer of the flexible light-emitting panel, the flexible light-emitting panel may include: a base substrate 20, a wiring layer 31 disposed on the base substrate 20, a light-emitting structure layer, and an encapsulation layer 36. The light-emitting structure layer may include multiple light-emitting devices that emit different colors. For example, the light-emitting device may be an OLED, including an anode, a cathode, and an organic light-emitting layer sandwiched between the anode and cathode.

[0069] In some examples, such as Figure 4As shown, the base substrate 20 can be a polyimide substrate or a transparent polyimide substrate to ensure the transparency of the base substrate 20. A barrier layer 21 is provided between the base substrate 20 and the wiring layer 31 to prevent water and oxygen from entering the interior of the flexible light-emitting panel. The barrier layer 21 can be a silicon oxide layer, a silicon nitride layer, or an amorphous silicon layer, or the barrier layer 21 can be a stack of at least two layers of a silicon oxide layer, a silicon nitride layer, and an amorphous silicon layer. The wiring layer 31 may include multiple wirings, such as wiring 310. A flat layer 22 is provided on the side of the wiring layer 31 away from the base substrate 20. The flat layer 22 can be made of an organic material such as polyimide (PI). The light-emitting structure layer may include: an anode layer 32, an organic light-emitting layer 33, a cathode layer 34, and a pixel definition layer 35 provided on the flat layer 22. The pixel definition layer 35 is disposed on the anode layer 32 and the planar layer 22 and has a pixel opening disposed thereon, exposing the anode layer 32. The organic light-emitting layer 33 is disposed within the pixel opening, and the cathode layer 34 is disposed on the organic light-emitting layer 33. The anode layer 32 includes an anode 320, and the organic light-emitting layer 33 may include a first organic light-emitting layer 330. The first organic light-emitting layer 330 emits light of a corresponding color under the action of a voltage applied between the anode 320 and the cathode layer 34. In some examples, the pixel definition layer 54 may be made of materials such as polyimide, acrylic, or polyethylene terephthalate. In some examples, the organic light-emitting layer may include a hole injection layer, a hole transport layer, an excitation layer, an electron transport layer, and an electron injection layer stacked in sequence. In some examples, the organic light-emitting layer of the infrared light unit may be made of a material containing a neodymium compound to generate near-infrared light. However, this embodiment is not limited to this.

[0070] In some examples, such as Figure 4 As shown, the encapsulation layer 36 may include a stacked first encapsulation layer, a second encapsulation layer and a third encapsulation layer. The first encapsulation layer and the third encapsulation layer may be made of inorganic materials, the second encapsulation layer may be made of organic materials, and the second encapsulation layer is arranged between the first encapsulation layer and the third encapsulation layer to ensure that external water vapor cannot enter the light-emitting structure layer.

[0071] In some examples, such as Figure 4 As shown, the cathode layer 34 is reflective. After the light emitted by the light-emitting device reaches the cathode layer 34, it is reflected by the cathode layer 34, and the light is emitted from one side of the base substrate 20, that is, the flexible light-emitting panel can be a bottom-emitting structure. The flexible light-emitting panel with a bottom-emitting structure has a high light-emitting efficiency and can save electricity under the same brightness. In some examples, the cathode layer 34 can be a silver layer, which is reflective and has low resistance, and can save electricity. In other examples, in order to improve the reflectivity of the cathode layer 34, the thickness of the cathode layer 34 can be increased. In some examples, the material of the anode layer 32 is indium tin oxide (ITO). Ensure the transparency of the anode layer to avoid affecting the light-emitting efficiency.

[0072] In this example, the flexible light-emitting panel with a bottom-emitting structure reuses the cathode layer as a reflective layer. However, this embodiment is not limited to this. In other examples, the flexible light-emitting panel can be a top-emitting structure, in which a reflective layer can be provided between the planar layer and the anode layer, and light emitted by the organic light-emitting layer passes through the cathode layer and is emitted from the encapsulation layer.

[0073] In this example, the wiring layer is electrically connected to the anode of the light-emitting device and to the first power supply terminal (for example, providing a high-level signal), sending an electrical signal to the anode to drive the light-emitting device to emit light and illuminate the person's face. The peripheral area of the flexible light-emitting panel has a binding area for arranging a drive circuit, and the drive circuit can have a first power supply terminal. The light-emitting device of the flexible light-emitting panel of this embodiment is only used for emitting light and does not need to control the display grayscale. Therefore, there is no need to arrange a complex pixel circuit. It is only necessary to provide voltage to the anode of the light-emitting device through the wiring to enable the light-emitting device to emit light. Therefore, in the arrangement direction of the light-emitting device, the anodes of light-emitting devices of the same color can be connected to the same wiring, thereby reducing the number of wirings and simplifying the preparation steps.

[0074] In some examples, a heat dissipation film may be attached to the back of the flexible light-emitting panel of this embodiment to effectively dissipate heat. For example, the heat dissipation film may be made of graphite, copper sheet, or a multi-layer heat dissipation laminate structure. However, this embodiment is not limited to this.

[0075] The structure of the flexible light-emitting panel is explained below by taking the example of the preparation process of the flexible light-emitting panel as an example. The "patterning process" mentioned in the embodiment of the present disclosure includes processes such as coating photoresist, mask exposure, development, etching, and stripping photoresist for metal materials, inorganic materials or transparent conductive materials, and includes processes such as coating organic materials, mask exposure and development for organic materials. Deposition can be carried out by any one or more of sputtering, evaporation, and chemical vapor deposition, coating can be carried out by any one or more of spraying, spin coating and inkjet printing, and etching can be carried out by any one or more of dry etching and wet etching, which are not limited in the present disclosure. "Thin film" refers to a thin film made by deposition, coating or other processes on a substrate of a certain material. If the "thin film" does not require a patterning process during the entire production process, the "thin film" can also be called a "layer". If the "thin film" requires a patterning process during the entire production process, it is called a "thin film" before the patterning process and a "layer" after the patterning process. The "layer" after the patterning process contains at least one "pattern".

[0076] In some exemplary embodiments, a process for preparing a flexible light-emitting panel may include the following operations.

[0077] (1) Provide a substrate.

[0078] In some exemplary embodiments, the base substrate 20 may be a flexible substrate.

[0079] (2) Form a routing layer.

[0080] In some exemplary embodiments, a blocking film and a first conductive film are sequentially deposited on the base substrate 20 forming the aforementioned structure, and the first conductive film is patterned by a patterning process to form a blocking layer 21 and a routing layer 31 disposed on the blocking layer 21 .

[0081] (3) Forming a light-emitting structure layer.

[0082] In some exemplary embodiments, a flat film is coated on the substrate 20 having the aforementioned pattern formed thereon, and the flat film is patterned by a patterning process to form a flat layer 22. An anode film is deposited on the substrate 20 having the aforementioned pattern formed thereon, and the anode film is patterned by a patterning process to form an anode layer 32. A pixel definition film is coated on the substrate 20 having the aforementioned pattern formed thereon, and a pixel definition layer 35 is formed by masking, exposure, and development processes. The pixel definition layer 35 is formed with a plurality of pixel openings exposing the anode layer. An organic light-emitting layer 33 is formed within the aforementioned pixel openings, and the organic light-emitting layer 33 is connected to the anode layer 32. Subsequently, a cathode film is deposited, and the cathode film is patterned by a patterning process to form a cathode layer 34, and the cathode layer 34 is in contact with the organic light-emitting layer 33.

[0083] (4) Forming an encapsulation layer.

[0084] In some exemplary embodiments, an encapsulation layer 36 is formed on the cathode layer 34 , and the encapsulation layer 36 may include a stacked structure of inorganic material / organic material / inorganic material.

[0085] The flexible light-emitting panel provided in this embodiment utilizes OLEDs to emit light, providing uniform surface illumination with low surface temperature, thereby protecting the skin from damage. Furthermore, different illumination levels are provided based on the skin characteristics of different areas, meeting the needs of different areas.

[0086] Figure 5A 2 is another schematic diagram of a first pixel unit in a first light-emitting region according to at least one embodiment of the present disclosure. Figure 5B 2 is another schematic diagram of a second pixel unit in a second light-emitting region according to at least one embodiment of the present disclosure.

[0087] In some exemplary embodiments, Figure 5AAs shown, the first pixel unit may include: a first red light unit 11b, a first yellow light unit 11c, a first infrared light unit 11d, and three first blue light units 11a1, 11a2, and 11a3. The first red light unit 11b, the first blue light unit 11a1, the first yellow light unit 11c, the first blue light unit 11a2, the first infrared light unit 11d, and the first blue light unit 11a3 may be arranged sequentially along a direction. The areas of each of the first blue light unit, the first red light unit 11b, the first yellow light unit 11c, and the first infrared light unit 11d are substantially the same. The total area of the first blue light units is greater than that of the first red light units.

[0088] In some exemplary embodiments, Figure 5B As shown, the second red light unit 12b, the second yellow light unit 12c, the second blue light unit 12a, and the second infrared light unit 12d of the second pixel unit can be arranged in sequence along one direction. The areas of the second red light unit 12b, the second yellow light unit 12c, the second blue light unit 12a, and the second infrared light unit 12d are substantially the same.

[0089] In some examples, such as Figure 5A and Figure 5B As shown, the total area of the first blue light units of the first pixel unit is greater than the total area of the second blue light units of the second pixel unit, so that the blue light emitting area of the first pixel unit is greater than the blue light emitting area of the second pixel unit.

[0090] The remaining descriptions of the first pixel unit and the second pixel unit of this embodiment can refer to the description of the aforementioned embodiment, and are therefore not repeated here.

[0091] Figure 6 FIG. 1 is another partial cross-sectional diagram of a flexible light-emitting panel according to at least one embodiment of the present disclosure. Figure 6 As shown, the flexible light-emitting panel of this embodiment includes a base substrate 20, and a routing layer 31, a flat layer 22, a light-emitting structure layer 41, and a quantum dot layer 42 disposed on the base substrate 20. The light-emitting structure layer 41 may include a plurality of blue light-emitting devices 41a. The quantum dot layer 42 may include a red quantum dot layer 37b, a yellow quantum dot layer 37c, and an infrared quantum dot layer 37d. In this example, the blue light-emitting device may be an OLED that emits blue light. By using a blue light-emitting device as the excitation light source for the quantum dot layer, the red quantum dot layer can be excited to emit red light, the yellow quantum dot layer can be excited to emit yellow light, and the infrared quantum dot layer can be excited to emit infrared light. Using a blue light-emitting device as the excitation light source for the quantum dot layer in this example simplifies the preparation process of the light-emitting structure layer. By combining the blue light-emitting device and the quantum dot layer to produce different light, a uniform surface light source with a low surface temperature can be achieved.

[0092] Figure 7A This is a partial top view of the quantum dot layer in the first light-emitting region of the flexible light-emitting panel according to at least one embodiment of the present disclosure. Figure 7B This is a partial top view of the quantum dot layer in the second light-emitting region of the flexible light-emitting panel according to at least one embodiment of the present disclosure.

[0093] In this example, the first pixel unit of the first light emitting area can be as follows: Figure 2A As shown, the second pixel unit of the second light emitting area can be as follows Figure 2B As shown. Figure 6 and Figure 7A As shown, the first blue light unit 11a may include a blue light-emitting device 41a, and the second blue light unit may include a blue light-emitting device. The first red light unit 11b may include a blue light-emitting device 41a and a red quantum dot layer 37b located on the light-emitting side of the blue light-emitting device 41a. The first yellow light unit 11c may include a blue light-emitting device 41a and a yellow quantum dot layer 37c located on the light-emitting side of the blue light-emitting device 41a. The first infrared light unit 11d may include a blue light-emitting device 41a and an infrared quantum dot layer 37d located on the light-emitting side of the blue light-emitting device 41a. The second red light unit may include a blue light-emitting device and a red quantum dot layer 37b located on the light-emitting side of the blue light-emitting device. The second yellow light unit may include a blue light-emitting device and a yellow quantum dot layer 37c located on the light-emitting side of the blue light-emitting device. The second infrared light unit may include a blue light-emitting device and an infrared quantum dot layer 37d located on the light-emitting side of the blue light-emitting device.

[0094] In this example, since the arrangement of the first pixel units in the first light-emitting area is different from the arrangement of the second pixel units in the second light-emitting area, the structure of the quantum dot layer in the first light-emitting area is also different from the structure of the quantum dot layer in the second light-emitting area.

[0095] In some examples, the material of the quantum dot layer 42 may include a polymer matrix and quantum dots dispersed in the polymer matrix. The polymer matrix may be a transparent resin material, which may include one or more of acrylic resin, epoxy resin, cycloolefin polymer, organosilane resin, and cellulose ester. However, this embodiment is not limited to this.

[0096] The remaining structures of the flexible light-emitting panel of this embodiment can be referred to the description of the aforementioned embodiments, and thus will not be described again here.

[0097] Figure 8 2 is another partial cross-sectional schematic diagram of the flexible light-emitting panel according to at least one embodiment of the present disclosure. Figure 9 Schematic diagram of the light-emitting structure layer of the second light-emitting region of at least one embodiment of the present disclosure. Figure 10Schematic diagram of the quantum dot layer in the second light-emitting region of at least one embodiment of the present disclosure.

[0098] In some exemplary embodiments, Figures 8 to 10 As shown, the second blue light unit of the flexible light-emitting panel may include a blue light-emitting device 41a, the second red light unit may include a red light-emitting device 41b, and the second yellow light unit may include a yellow light-emitting device 41c. The second infrared light unit may include: a blue light-emitting device 41a and an infrared light quantum dot layer 37d located on the light-emitting side of the blue light-emitting device 41a. Similarly, the first blue light unit, the first red light unit, and the first yellow light unit may only include light-emitting devices that emit light of corresponding colors. The first infrared light unit may include a blue light-emitting device and an infrared light quantum dot layer located on the light-emitting side of the blue light-emitting device. In this example, the blue light-emitting device can be used as an excitation light source to generate infrared light, and the remaining visible light can be directly generated by the light-emitting device. However, this embodiment is not limited to this. The remaining structure of the flexible light-emitting panel of this embodiment can refer to the description of the previous embodiment, so it will not be repeated here.

[0099] In some exemplary embodiments, a quantum dot layer may be directly formed on the side of the light emitting structure layer away from the base substrate, or another film layer may be disposed between the light emitting structure layer and the quantum dot layer. However, this embodiment is not limited thereto.

[0100] This embodiment also provides a method for preparing a flexible light-emitting panel, comprising: forming a plurality of first pixel units in a first light-emitting area, forming a plurality of second pixel units in a second light-emitting area, wherein the second light-emitting area is located on at least one side of the first light-emitting area; a single first pixel unit includes at least one first blue light unit, and a single second pixel unit includes at least one second blue light unit; the first blue light unit and the second blue light unit are configured to emit blue light. The blue light emitting area of the single first pixel unit is greater than the blue light emitting area of the single second pixel unit. The method for preparing the flexible light-emitting panel of this embodiment can be described above, so it will not be repeated here.

[0101] Figure 11 Schematic diagram of a beauty instrument according to at least one embodiment of the present disclosure. Figure 11 As shown, this embodiment provides a beauty instrument 91, including a flexible light-emitting panel 910. The flexible light-emitting panel 910 is the flexible OLED light-emitting panel provided in the above embodiment.

[0102] The drawings in this disclosure only relate to the structures involved in this disclosure, and other structures may refer to the general design. In the absence of conflict, the embodiments of this disclosure and the features in the embodiments may be combined with each other to obtain new embodiments. It should be understood by those skilled in the art that the technical solutions of this disclosure may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of this disclosure, and should be included in the scope of the claims of this disclosure.

Claims

1. A flexible light-emitting panel, characterized in that: include: a first light emitting region and a second light emitting region; The second light emitting area is located on at least one side of the first light emitting area; The first light-emitting area includes: a plurality of first pixel units, and the second light-emitting area includes: a plurality of second pixel units; a single first pixel unit includes at least one first blue light unit, and a single second pixel unit includes at least one second blue light unit; the first blue light unit and the second blue light unit are configured to emit blue light; The blue light emitting area of a single first pixel unit is larger than the blue light emitting area of a single second pixel unit; the flexible light emitting panel includes: a base substrate, and a wiring layer, a light emitting structure layer, and a quantum dot layer arranged on the base substrate; The at least one first pixel unit further includes: at least one first light-emitting unit, the first light-emitting unit being configured to emit first color light, the wavelength range of the first color light being different from the wavelength range of the blue light; the first light-emitting unit including: an OLED that emits blue light, and a first color quantum dot layer located on a light-emitting side of the OLED that emits blue light; the OLED that emits blue light of the first light-emitting unit serving as an excitation light source for the first color quantum dot layer; At least one second pixel unit also includes: at least one second light-emitting unit, the second light-emitting unit is configured to emit a second color light, the wavelength range of the second color light is different from the wavelength range of the blue light; the second light-emitting unit includes: an OLED that emits blue light, and a second color quantum dot layer located on the light-emitting side of the OLED that emits blue light; the OLED that emits blue light of the second light-emitting unit serves as an excitation light source for the second color quantum dot layer.

2. The flexible light-emitting panel according to claim 1, characterized in that: An arrangement of the first blue light unit and the first light emitting unit of the first pixel unit is different from an arrangement of the second blue light unit and the second light emitting unit of the second pixel unit.

3. The flexible light-emitting panel according to claim 1, characterized in that: The total area of the first blue light units of the first pixel unit is greater than the area of any first light-emitting unit; The total area of the second blue light units of the second pixel unit is substantially the same as the area of any second light emitting unit.

4. The flexible light-emitting panel according to claim 1, characterized in that: The at least one first light emitting unit of the first pixel unit includes: a first red light unit, a first yellow light unit and a first infrared light unit; the first red light unit is configured to emit red light, the first yellow light unit is configured to emit yellow light, and the first infrared light unit is configured to emit infrared light; In the first pixel unit, the first red light unit, the first yellow light unit, and the first infrared light unit are arranged in sequence along a first direction, and the first blue light unit is located on the same side of the first red light unit, the first yellow light unit, and the first infrared light unit along a second direction, and the first direction intersects the second direction; Alternatively, the first pixel unit includes three first blue light units, and within the first pixel unit, the first red light unit, the first blue light unit, the first yellow light unit, the first blue light unit, the first infrared light unit, and the first blue light unit are arranged in sequence.

5. The flexible light-emitting panel according to claim 1, characterized in that: The at least one second light emitting unit of the second pixel unit includes: a second red light unit, a second yellow light unit, and a second infrared light unit; the second red light unit is configured to emit red light, the second yellow light unit is configured to emit yellow light, and the second infrared light unit is configured to emit infrared light; In the second pixel unit, the second red light unit, the second yellow light unit, the second blue light unit and the second infrared light unit are arranged in sequence along one direction, or arranged in a 2*2 array.

6. The flexible light-emitting panel according to claim 4 or 5, characterized in that: The wavelength range of the red light is 625 nanometers to 670 nanometers; the wavelength range of the yellow light is 570 nanometers to 590 nanometers; and the wavelength range of the infrared light is 850 nanometers to 940 nanometers.

7. The flexible light-emitting panel according to claim 1, characterized in that: The wavelength of the blue light ranges from 405 nanometers to 480 nanometers.

8. The flexible light-emitting panel according to claim 1, characterized in that: The first blue light unit includes an OLED that emits blue light, and the second blue light unit includes an OLED that emits blue light.

9. The flexible light-emitting panel according to claim 1, characterized in that: The light-emitting structure layer includes: an anode layer, a pixel definition layer, a light-emitting layer and a cathode layer located on the side of the wiring layer away from the base substrate; the wiring layer includes multiple wirings, and the light-emitting units to which the anodes connected to the same wiring belong have the same color.

10. The flexible light-emitting panel according to claim 1, characterized in that: The first light emitting area is T-shaped.

11. A beauty instrument, characterized in that: The flexible light-emitting panel comprises the flexible light-emitting panel according to any one of claims 1 to 10.

12. A method for preparing a flexible light-emitting panel, characterized in that: For preparing the flexible light-emitting panel according to any one of claims 1 to 10, the preparation method comprises: A plurality of first pixel units are formed in a first light-emitting area, and a plurality of second pixel units are formed in a second light-emitting area, wherein the second light-emitting area is located on at least one side of the first light-emitting area; a single first pixel unit includes at least one first blue light unit, and a single second pixel unit includes at least one second blue light unit; the first blue light unit and the second blue light unit are configured to emit blue light; a blue light emitting area of a single first pixel unit is larger than a blue light emitting area of a single second pixel unit.

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