阅读说明：本技术 一种柔性面罩 (Flexible mask ) 是由 鲁天星 张国辉 许显斌 朱映光 于倩倩 胡永岚 李栋栋 于 2021-09-02 设计创作，主要内容包括：本发明实施例公开了一种柔性面罩,该柔性面罩包括：至少一个柔性发光面板,所述柔性发光面板包括有机发光面光源,所述有机发光面光源上设置有多个孔洞,所述孔洞在所述有机发光面光源的发光区均匀分布,每一所述孔洞内对应设置有无机发光单元。本发明实施例可以提高柔性面罩对不同人脸的适形性,提高光治疗强度及效果,提高柔性面罩发光均匀性,降低了整个柔性面罩的厚度和重量,提升用户体验。(The embodiment of the invention discloses a flexible mask, which comprises: the flexible light-emitting panel comprises an organic light-emitting area light source, a plurality of holes are formed in the organic light-emitting area light source, light-emitting areas of the organic light-emitting area light source are uniformly distributed, and an inorganic light-emitting unit is correspondingly arranged in each hole. The embodiment of the invention can improve the conformability of the flexible mask to different human faces, improve the light treatment intensity and effect, improve the light emitting uniformity of the flexible mask, reduce the thickness and weight of the whole flexible mask and improve the user experience.)

1. A flexible mask, comprising:

at least one flexible light-emitting panel;

the flexible light-emitting panel comprises an organic light-emitting area light source, a plurality of holes are formed in the organic light-emitting area light source, light-emitting areas of the organic light-emitting area light source are uniformly distributed, and an inorganic light-emitting unit is correspondingly arranged in each hole.

2. The flexible mask according to claim 1, wherein:

the organic light-emitting surface light source comprises a flexible substrate, an organic light-emitting functional layer and a packaging layer which are sequentially stacked, the flexible substrate comprises a first driving circuit, and the organic light-emitting functional layer is electrically connected with the first driving circuit;

the hole penetrates through the organic light-emitting functional layer and the packaging layer along the thickness direction of the organic light-emitting area light source, the inorganic light-emitting unit is arranged on the surface of the flexible substrate, the flexible substrate comprises a second driving circuit, and the inorganic light-emitting unit is electrically connected with the second driving circuit; or each flexible light-emitting panel further comprises a flexible circuit board, the flexible circuit board is arranged on one side, away from the organic light-emitting function layer, of the flexible substrate, the hole penetrates through the organic light-emitting area light source along the thickness direction of the organic light-emitting area light source, the inorganic light-emitting unit is arranged on the surface of the flexible circuit board, the flexible circuit board comprises a second driving circuit, and the inorganic light-emitting unit is electrically connected with the second driving circuit.

3. The flexible mask according to claim 2, wherein:

the flexible mask further comprises a controller and a power supply, wherein the controller is electrically connected with the power supply, the first driving circuit and the second driving circuit respectively;

the controller is used for receiving a power supply signal and outputting a first driving signal to the first driving circuit so that the first driving circuit drives the organic light-emitting functional layer to emit light; the controller is further configured to perform pulse width modulation on the power signal, and output second driving signals with different duty ratios to the second driving circuit, so that the second driving circuit drives the inorganic light emitting unit to emit light.

4. The flexible mask according to claim 2, wherein:

the organic light-emitting functional layer comprises a first electrode layer, an organic light-emitting layer and a second electrode layer which are sequentially stacked, and the first electrode layer is arranged on one side, close to the flexible substrate, of the organic light-emitting layer;

the first electrode layer comprises at least two electrode blocks, each electrode block is electrically connected with the first driving circuit, and the second electrode layer is electrically connected with the first driving circuit.

5. The flexible mask of claim 4, wherein:

the organic light-emitting functional layer further comprises a plurality of auxiliary electrodes, and each auxiliary electrode is positioned between the hole and the light-emitting area and is not overlapped with the boundary of the hole and the light-emitting area;

each auxiliary electrode is electrically connected with the adjacent electrode block.

6. The flexible mask of claim 4, wherein:

the inorganic light-emitting unit is electrically connected with a second driving circuit in the flexible substrate through a connecting structure, and the connecting structure and the first electrode layer are made of the same material.

7. The flexible mask according to claim 1, wherein:

and the adjacent flexible light-emitting panels are mutually spliced, each flexible light-emitting panel comprises a non-light-emitting area surrounding the light-emitting area, and the non-light-emitting areas of the adjacent flexible light-emitting panels are mutually overlapped.

8. The flexible mask according to claim 1, wherein:

the aperture of the hole is 0.1-5 mm;

the distance between the boundary of the hole and the boundary of the light emitting area is greater than or equal to 0.05mm and less than or equal to 5 mm.

9. The flexible mask according to claim 1, wherein:

the height of the inorganic light-emitting unit is less than or equal to 1 mm; the inorganic light-emitting unit is welded in the hole;

the inorganic light emitting unit comprises an LED, a MINILED or a MICRO-LED;

the light-emitting angle range of the inorganic light-emitting unit is between 90 degrees and 180 degrees.

10. The flexible mask according to claim 1, wherein:

each flexible light-emitting panel further comprises a light homogenizing layer and a pressure-sensitive adhesive layer, wherein the light homogenizing layer is arranged on the light-emitting side of the organic light-emitting area light source and covers the organic light-emitting area light source; the light homogenizing layer comprises scattering particles;

the pressure-sensitive adhesive layer is arranged on one side of the light homogenizing layer, which is far away from the organic light-emitting area light source;

the thickness range of the even light layer comprises 0.05mm-2mm, and the light transmittance of the pressure-sensitive adhesive layer is greater than or equal to 80%.

Technical Field

The embodiment of the invention relates to the technical field of optical medical treatment, in particular to a flexible mask.

Background

Along with the improvement of the living standard of the mass, the demand of people on health beauty is higher and higher, and the illumination technology is popular to the majority of women consumers as a mode with good safety effect, especially the illumination beauty instrument is more and more widely applied. Light has tremendous applications in photocosmetics as well as photomedics.

The existing light beauty mask mostly adopts a curved surface hard screen mode, and the defects of the mode are as follows: 1. the curvature is fixed, and the adaptability to different human faces is poor; 2. in the irradiation process, the light source is far away from the face, so that the light flux irradiated on the face is low, and meanwhile, because the adopted direct-insertion type LED point light sources (the height of the LED is more than or equal to 5mm) are adopted, the uniformity of the light source is poor, and a good light beautifying effect cannot be achieved; 3. because the light source is attached to a rigid carrier, the light source is thick, heavy, and the user experience is not good.

Disclosure of Invention

The invention provides a flexible mask, which is used for improving the adaptability of the flexible mask to different human faces, improving the light treatment intensity and effect, improving the light emitting uniformity of the flexible mask, reducing the thickness and weight of the whole flexible mask and improving the user experience.

The embodiment of the invention provides a flexible mask, which comprises:

at least one flexible light-emitting panel;

the flexible light-emitting panel comprises an organic light-emitting area light source, a plurality of holes are formed in the organic light-emitting area light source, light-emitting areas of the organic light-emitting area light source are uniformly distributed, and an inorganic light-emitting unit is correspondingly arranged in each hole.

Optionally, the organic light emitting surface light source includes a flexible substrate, an organic light emitting functional layer and an encapsulation layer, which are sequentially stacked, where the flexible substrate includes a first driving circuit, and the organic light emitting functional layer is electrically connected to the first driving circuit;

the hole penetrates through the organic light-emitting functional layer and the packaging layer along the thickness direction of the organic light-emitting area light source, the inorganic light-emitting unit is arranged on the surface of the flexible substrate, the flexible substrate comprises a second driving circuit, and the inorganic light-emitting unit is electrically connected with the second driving circuit; or each flexible light-emitting panel further comprises a flexible circuit board, the flexible circuit board is arranged on one side, away from the organic light-emitting function layer, of the flexible substrate, the hole penetrates through the organic light-emitting area light source along the thickness direction of the organic light-emitting area light source, the inorganic light-emitting unit is arranged on the surface of the flexible circuit board, the flexible circuit board comprises a second driving circuit, and the inorganic light-emitting unit is electrically connected with the second driving circuit.

Optionally, the flexible mask further comprises a controller and a power supply, and the controller is electrically connected to the power supply, the first driving circuit and the second driving circuit respectively;

the controller is used for receiving a power supply signal and outputting a first driving signal to the first driving circuit so that the first driving circuit drives the organic light-emitting functional layer to emit light; the controller is further configured to perform pulse width modulation on the power signal, and output second driving signals with different duty ratios to the second driving circuit, so that the second driving circuit drives the inorganic light emitting unit to emit light.

Optionally, the organic light emitting functional layer includes a first electrode layer, an organic light emitting layer and a second electrode layer, which are sequentially stacked, and the first electrode layer is disposed on one side of the organic light emitting layer adjacent to the flexible substrate;

the first electrode layer comprises at least two electrode blocks, each electrode block is electrically connected with the first driving circuit, and the second electrode layer is electrically connected with the first driving circuit.

Optionally, the organic light emitting functional layer further includes a plurality of auxiliary electrodes, each of the auxiliary electrodes is located between the hole and the light emitting region, and is not overlapped with the boundary between the hole and the light emitting region;

each auxiliary electrode is electrically connected with the adjacent electrode block.

Optionally, the inorganic light emitting unit is electrically connected to the second driving circuit in the flexible substrate through a connection structure, and the connection structure and the first electrode layer are made of the same material.

Optionally, the adjacent flexible light-emitting panels are spliced with each other, each flexible light-emitting panel comprises a non-light-emitting area surrounding the light-emitting area, and the non-light-emitting areas of the adjacent flexible light-emitting panels overlap with each other.

Optionally, the aperture of the hole is 0.1-5 mm;

the distance between the boundary of the hole and the boundary of the light emitting area is greater than or equal to 0.05mm and less than or equal to 5 mm.

Optionally, the height of the inorganic light emitting unit is less than or equal to 1 mm; the inorganic light-emitting unit is welded in the hole;

the inorganic light emitting unit comprises an LED, a MINILED or a MICRO-LED;

the light-emitting angle range of the inorganic light-emitting unit is between 90 degrees and 180 degrees.

Optionally, each flexible light-emitting panel further includes a light homogenizing layer and a pressure-sensitive adhesive layer, the light homogenizing layer is disposed on the light-emitting side of the organic light-emitting area source, and the light homogenizing layer covers the organic light-emitting area source; the light homogenizing layer comprises scattering particles;

the pressure-sensitive adhesive layer is arranged on one side of the light homogenizing layer, which is far away from the organic light-emitting area light source;

the thickness range of the even light layer comprises 0.05mm-2mm, and the light transmittance of the pressure-sensitive adhesive layer is greater than or equal to 80%.

The flexible face mask provided by the embodiment of the invention adopts a form of combining the flexible organic light-emitting surface light source and the inorganic light-emitting source, the organic light-emitting surface light source has better light-emitting uniformity and certain flexibility, and has better adaptability to different human faces, so that the flexible face mask can be directly attached to the face to improve the light treatment intensity and effect.

Drawings

FIG. 1 is a schematic view of a flexible mask provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram of a flexible light emitting panel provided by an embodiment of the invention;

FIG. 3 is a cross-sectional schematic view of the flexible light emitting panel of FIG. 2 along section line AA;

FIG. 4 is a schematic cross-sectional view of the flexible light emitting panel of FIG. 2 taken along section line AA;

FIG. 5 is a schematic cross-sectional view of the flexible light emitting panel of FIG. 2 along section line BB; (ii) a

FIG. 6 is a schematic view of yet another flexible mask provided by an embodiment of the present invention;

FIG. 7 is a schematic view of yet another flexible mask provided by an embodiment of the present invention;

FIG. 8 is a schematic diagram of yet another flexible light emitting panel provided by an embodiment of the present invention;

fig. 9 is a partial schematic view of a flexible light-emitting panel provided by an embodiment of the present invention;

fig. 10 is a schematic diagram of splicing a flexible light-emitting panel according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

An embodiment of the present invention provides a flexible mask, fig. 1 is a schematic diagram of a flexible mask provided by an embodiment of the present invention, fig. 2 is a schematic diagram of a flexible light-emitting panel provided by an embodiment of the present invention, fig. 3 is a schematic cross-sectional view of the flexible light-emitting panel in fig. 2 along a section line AA, and fig. 4 is a schematic cross-sectional view of the flexible light-emitting panel in fig. 2 along a section line AA. Referring to fig. 1-4, a flexible mask includes:

at least one flexible light emitting panel 100;

the flexible light emitting panel 100 includes an organic light emitting surface light source 20, a plurality of holes 30 are disposed on the organic light emitting surface light source 20, the holes 30 are uniformly distributed in a light emitting region 101 of the organic light emitting surface light source 20, and an inorganic light emitting unit 40 is correspondingly disposed in each hole 30.

The plurality of flexible light-emitting panels 100 may be spliced or integrally formed, and the embodiment is not particularly limited. The organic light emitting surface light source 20 emits light in the whole surface, the organic light emitting surface light source 20 may include a flexible substrate, an organic light emitting functional layer and an encapsulation layer, and the hole 30 may penetrate through the organic light emitting surface light source 20 or may not penetrate through the organic light emitting surface light source 20, which is not specifically limited in this embodiment.

The flexible face mask provided by the embodiment of the invention adopts a form of combining the flexible organic light-emitting surface light source and the inorganic light-emitting source, the organic light-emitting surface light source has better light-emitting uniformity and certain flexibility, and has better adaptability to different human faces, so that the flexible face mask can be directly attached to the face to improve the light treatment intensity and effect.

It should be noted that fig. 2 only illustrates the rectangular flexible light-emitting panel by way of example, and the present invention is not limited to this embodiment, and in other embodiments, the flexible light-emitting panel may be provided with different shapes according to the requirements of the flexible mask.

Alternatively, referring to fig. 3, the organic light emitting surface light source includes a flexible substrate 210, an organic light emitting functional layer 220, and an encapsulation layer 230, which are sequentially stacked, where the flexible substrate 210 includes a first driving circuit 11, and the organic light emitting functional layer 220 is electrically connected to the first driving circuit 11.

The hole 30 penetrates through the organic light emitting functional layer 220 and the encapsulation layer 230 along the thickness direction of the organic light emitting surface light source 20, the inorganic light emitting unit 40 is disposed on the surface of the flexible substrate 210, the flexible substrate 210 includes a second driving circuit 12, and the inorganic light emitting unit 40 is electrically connected to the second driving circuit 12.

The organic light emitting function layer 220 may include an anode, a cathode, and an organic light emitting layer disposed between the anode and the cathode. When the organic light emitting surface light source 20 is formed, the flexible substrate 210 having the first driving circuit 11 and the second driving circuit 12 may be formed first, then the organic light emitting function layer 220 is formed, a second through hole is formed when the organic light emitting function layer 220 is formed, then the encapsulation layer 230 is formed, a third through hole is provided on the encapsulation layer 230, and the encapsulation layer 230 covers a boundary of the second through hole, which is the hole 30 of the organic light emitting surface light source 20. The phosphor element 40 can be directly soldered to the exposed flexible substrate 210 in the hole 30.

The second driving circuit 12 for driving the inorganic light emitting unit 40 to emit light is arranged in the flexible substrate 210 of the organic light emitting surface light source 20, the second driving circuit 12 can be manufactured together with the first driving circuit 11, process steps are reduced, meanwhile, a substrate for bearing the second driving circuit 12 does not need to be separately arranged, the thickness of the flexible light emitting surface plate is reduced, the flexibility of the flexible light emitting surface plate is improved, the flexibility of the flexible face mask is improved, the thickness of the flexible face mask is reduced, and user experience is improved.

Fig. 5 is a schematic cross-sectional view of the flexible light emitting panels in fig. 2 along a section line BB, and optionally, referring to fig. 4 and 5, each of the flexible light emitting panels further includes a flexible circuit board 10, the flexible circuit board 10 is disposed on a side of the flexible substrate away from the organic light emitting functional layer, a hole 30 penetrates through the organic light emitting surface light source 20 along a thickness direction of the organic light emitting surface light source 20, the inorganic light emitting unit 40 is disposed on a surface of the flexible circuit board 10, the flexible circuit board 10 includes a second driving circuit 12, and the inorganic light emitting unit 40 is electrically connected to the second driving circuit 12.

Specifically, the inorganic light emitting unit 40 is directly disposed on the surface of the flexible printed circuit board 10, and the second driving circuit 12 is separately disposed in the flexible printed circuit board 10, so that the second driving circuit 12 and the first driving circuit 11 are prevented from being affected with each other, and the difficulty of the manufacturing process of the first driving circuit 11 and the second driving circuit is reduced.

Fig. 6 is a schematic view of yet another flexible mask provided by an embodiment of the present invention, fig. 7 is a schematic view of yet another flexible mask provided by an embodiment of the present invention, and, alternatively, with reference to fig. 6 and 7,

the flexible mask further comprises a controller 300 and a power supply 200, wherein the controller 300 is electrically connected with the power supply 200, the first driving circuit 11 and the second driving circuit 12 respectively;

the controller 300 is configured to receive a power signal and output a first driving signal to the first driving circuit 11, so that the first driving circuit 11 drives the organic light emitting functional layer 220 to emit light; the controller 300 is further configured to perform pulse width modulation on the power signal, and output second driving signals with different duty ratios to the second driving circuit 12, so that the second driving circuit 12 drives the inorganic light emitting unit 40 to emit light.

Specifically, the controller 300 may drive the organic light emitting function layer 220 and the inorganic light emitting structure 40 to emit light according to different light emitting modes. For example, in the strong light mode, the primary light source is the inorganic light emitting unit 40, the organic light emitting functional layer 220 is the auxiliary light source, and the controller 300 may drive only the inorganic light emitting unit 40 to emit light, or drive both the inorganic light emitting unit 40 and the organic light emitting functional layer 220 to emit light. In the low light mode, the organic light emitting functional layer 220 is a main light source, the inorganic light emitting unit 40 is an auxiliary light source, and the controller 300 may drive the organic light emitting functional layer 220 to emit light and increase uniformity of light emission by controlling the inorganic light emitting unit 40 to emit light.

The organic light emitting function layer 220 may adopt a constant current driving mode, the power supply 200 outputs a current with a set magnitude to the controller 300, the controller 300 performs a certain processing on the current to obtain a driving current required by the organic light emitting function layer 220, the driving current is output to the first driving circuit 11, and the organic light emitting function layer 220 is driven to emit light by the first driving circuit 11. For example, the first driving circuit 11 may output a constant current of 11mA to the organic light emitting function layer 220, and the luminance of the organic light emitting function layer 220 is 1000 nit. The controller 300 may output the second driving signals with different duty ratios to the second driving circuit 12 by performing pulse width modulation on the power signal, so as to adjust the overall light emitting uniformity of the organic light emitting function layer 220 and the inorganic light emitting unit 40.

FIG. 8 is a schematic diagram of another flexible light-emitting panel according to an embodiment of the present invention, and referring to FIG. 8, ten test points 0-9 are selected on the flexible light-emitting panel, the power supply is set to output a current of 1mA to the controller, the controller outputs currents with different duty ratios through pulse width modulation, and the current output value is sent to the second driving circuit, so that the second driving circuit drives the inorganic light-emitting unit to emit light. The luminous uniformity of the flexible luminous panel is calculated by testing the brightness of 0-9 test points on the surface of the flexible luminous panel, and the calculation formula is as follows: 1- (luminance max-luminance min)/(luminance max + luminance min), table 1 shows the uniformity data for different duty cycles for different light exit angles of the phosphor element.

TABLE 1

As can be seen from table 1, the different duty ratios have a large influence on the light emission uniformity of the flexible light-emitting panel, and as the duty ratios increase, the uniformity becomes better and worse, mainly because the inorganic light-emitting unit has lower brightness when the duty ratios are lower, the uniformity becomes worse; in the case where the duty ratio is high, the luminance of the inorganic light emitting unit may be higher than that of the organic light emitting functional layer, resulting in deterioration of the duty ratio.

The embodiment adjusts the duty ratio of the driving signal of the inorganic light-emitting unit through the controller, and adjusts the light-emitting uniformity of the flexible light-emitting panel, so that the flexible mask has higher light-emitting uniformity.

Optionally, the light-emitting angle range of the inorganic light-emitting unit includes 90 degrees to 180 degrees.

It can be seen from table 1 that the light-emitting uniformity of the whole flexible light-emitting panel is better when the light-emitting angle of the inorganic light-emitting unit is between 90 degrees and 180 degrees. Illustratively, the light-emitting angle of the inorganic light-emitting unit may be 120 degrees, 130 degrees, 135 degrees, or 150 degrees.

In addition, with continued reference to fig. 6 and 7, the organic light emitting function layer 220 may be continuously distributed on the whole surface of the light emitting region 101 except the position of the holes 30, and the organic light emitting function layer 220 may also include several sub-regions, where the organic light emitting function layer 220 of each sub-region is continuously distributed, and each sub-region is a surface light source.

The following describes a specific process for forming the hole 30 in the flexible light-emitting panel having the flexible circuit board 10 with reference to fig. 7: when the organic light emitting surface light source is formed, a first through hole may be first formed in the flexible substrate 210, and then the organic light emitting functional layer 220 having a second through hole is formed, for example, the organic light emitting functional layer 220 may include an anode layer, an organic light emitting layer, and a cathode layer, and the organic light emitting layer and the cathode layer that are evaporated may be shielded by corresponding positions of a mask for evaporating the organic light emitting layer and the cathode layer, so that the organic light emitting layer and the cathode layer that are evaporated have the second through hole, the anode layer may be formed into the second through hole through a photolithography process, and the second through hole corresponds to the first through hole one to one. Then, the encapsulation layer 230 is formed, and the third through hole may be formed at the same time when the encapsulation layer 230 is formed, for example, the encapsulation layer 230 includes an inorganic layer, the inorganic layer may be formed by using a chemical vapor deposition process, and the inorganic layer with the third through hole may be formed by using a corresponding mask during the chemical vapor deposition process. Alternatively, the entire layer of the packaging material may be formed first, the first through hole and the second through hole are filled with the packaging material, and then a third through hole is formed in the packaging material layer by laser drilling or other processes, and the third through hole penetrates through the packaging layer 230. The hole with the boundary farthest from the light emitting region 101 in the first through hole, the second through hole and the third through hole is a hole of the organic light emitting area light source.

Fig. 9 is a partial schematic view of a flexible light-emitting panel according to an embodiment of the present invention, and optionally, referring to fig. 9, an organic light-emitting functional layer 220 includes a first electrode layer 201, an organic light-emitting layer 202 and a second electrode layer 203, which are sequentially stacked, where the first electrode layer 201 is disposed on a side of the organic light-emitting layer 202 adjacent to the flexible substrate 10;

the first electrode layer 201 includes at least two electrode blocks 22, each electrode block 22 is electrically connected to the first driving circuit 11, and the second electrode layer 203 is electrically connected to the first driving circuit 11.

The organic light emitting surface light source 20 may have a front structure or a back structure, and when the first electrode layer 201 is made of transparent material such as transparent conductive oxide, the organic light emitting surface light source 20 emits light from the front (commonly referred to as a bottom light emitting structure), that is, the first electrode layer 201 side of the organic light emitting surface light source 20 is a light emitting side. When the first electrode layer 201 is made of an opaque material such as silver, indium tin oxide, indium metal, or Al, the organic light emitting surface light source 20 has a back structure (commonly referred to as a top light emitting structure), that is, the second electrode layer 203 side of the organic light emitting surface light source 20 is a light emitting side. The first electrode layer 201 may be an anode layer and the second electrode layer 203 may be a cathode layer. The first driving circuit 11 provides driving signals to the anode layer and the cathode layer, so that a certain voltage difference exists between the anode layer and the cathode layer, holes generated by the anode move to the organic light emitting layer, electrons generated by the cathode move to the organic light emitting layer, and the organic light emitting layer emits light of a corresponding color after the holes and the electrons are combined in the organic light emitting layer.

Specifically, the organic light emitting function layer 220 may be arranged to include at least two sub-light emitting regions according to requirements, each electrode block 22 corresponds to one sub-light emitting region, and each sub-light emitting region may emit light with different brightness and/or different colors according to requirements by sending different driving signals to different electrode blocks 22. The organic light emitting function layer 220 includes at least two electrode blocks 22, so that light with different brightness and/or different colors can be emitted to the sub-light emitting regions corresponding to the different electrode blocks 22 according to requirements, different light requirements are met, and user experience is further improved.

Alternatively, with continued reference to fig. 6, the inorganic light emitting unit 40 is electrically connected to the second driving circuit 12 in the flexible substrate 210 through a connecting structure 41, and the connecting structure 41 and the first electrode layer are made of the same material.

Specifically, for the structure in which the second driving circuit 12 is disposed in the flexible substrate 210, the connection structure 41 and the first electrode layer 201 may be made of the same material in the same process, so as to reduce the number of process steps.

Optionally, referring to fig. 7, the organic light emitting function layer 220 further includes a plurality of auxiliary electrodes 204, each auxiliary electrode 204 is located between the hole 30 and the light emitting region 101, and does not overlap with the boundary of the hole 30 and the light emitting region 101;

each auxiliary electrode 204 is electrically connected to its neighboring electrode block 22.

Specifically, by disposing the first auxiliary electrode 204 to be electrically connected to the adjacent electrode block 22, the resistance of the electrode block 22 can be reduced, the loss of the driving signal in the electrode block 22 can be reduced, and the light emitting efficiency can be improved.

Optionally, referring to fig. 7, the flexible light emitting panel further comprises a light emitting defining layer 70, the light emitting defining layer 70 is arranged around the light emitting region 101, and the light emitting defining layer 70 is arranged at the boundary of the hole 30.

Specifically, after the first electrode layer 201 and the auxiliary electrode block 204 are formed, the light-emitting limiting layer 70 is formed first, the light-emitting limiting layer 70 is located at the boundary of the organic light-emitting functional layer 220 to improve the light-emitting clarity and uniformity at the boundary, then the organic layer 202, the second electrode layer 203 and the encapsulation layer 230 are formed, and the encapsulation layer 230 can be coated on the exposed boundaries of the light-emitting limiting layer 70 and the light-emitting functional layer at the hole and the exposed coated light-emitting limiting layer 70 at the boundary of the light-emitting region 101, so that water and oxygen can be better prevented from entering the light-emitting functional layer.

Fig. 10 is a schematic diagram of a flexible light-emitting panel according to an embodiment of the present invention, and referring to fig. 10, alternatively, adjacent flexible light-emitting panels 100 are spliced with each other, each flexible light-emitting panel includes a non-light-emitting region 102 surrounding a light-emitting region 101, and the non-light-emitting regions 102 of the adjacent flexible light-emitting panels overlap with each other.

Specifically, the non-light emitting region 102 of each flexible light emitting panel 100 may completely overlap with the non-light emitting region 102 of the flexible light emitting panel 100 adjacent thereto to minimize the reduction of the patchwork. Illustratively, the width of the non-light emitting region 102 is 1.25mm, the patchwork can be reduced to 1.25 mm.

Optionally, with continued reference to fig. 7, the aperture of the holes is 0.1-5 mm;

the distance D between the boundary of the hole 30 and the boundary of the light emitting region 101 is greater than or equal to 0.05mm and less than or equal to 5 mm.

Specifically, the holes 30 are used for disposing the inorganic light emitting units 40, the hole diameter of the hole 30 is too small, which easily increases the difficulty of the disposing process of the inorganic light emitting unit 40, and the hole diameter of the hole 30 is too large, which occupies a larger area of the light emitting region, and easily affects the uniformity of light emission. By setting the aperture of the holes 30 to be 0.1-5mm, the difficulty of the setting process of the inorganic light-emitting unit 40 is reduced, the problem that the holes 30 influence the light-emitting uniformity too much is avoided, and the flexible light-emitting panel is ensured to have higher light-emitting uniformity.

In addition, the boundary of the light emitting region 101 is the light emitting boundary of the organic light emitting functional layer 220, when the distance D between the boundary of the hole 30 and the boundary of the light emitting region 101 is small, the difficulty of the forming process of the hole 30 is large, and when the distance D is large, a large non-light emitting region exists, and by setting the distance D between the boundary of the hole 30 and the boundary of the light emitting region 101 to be greater than or equal to 0.05mm and less than or equal to 5mm, the difficulty of the forming process of the hole 30 is reduced, and meanwhile, the area of the non-light emitting region is reduced.

For example, the size of the light emitting region of the flexible light emitting panel may be 115mm by 115mm, 11 holes may be evenly distributed in the light emitting region, the pitch of the holes may be 10mm, the diameter of the holes is 0.5mm, and the distance D between the holes and the edge of the light emitting region is 0.07 mm. A mini-LED of 0.2 (length) by 0.2mm (width) by 0.1 (height) mm was placed in the very center of the hole.

Optionally, the height of the inorganic light emitting unit 40 is less than or equal to 1 mm; the phosphor element 10 is soldered in the hole 30.

By the arrangement, the volume occupied by the inorganic light-emitting unit 40 is reduced, the influence of the inorganic light-emitting unit 40 on the flexibility of the flexible light-emitting panel is reduced, and the flexible light-emitting panel is ensured to have higher flexibility. For example, a patch-type phosphor unit may be used, and the phosphor unit 40 is directly soldered to the surface of the flexible circuit board or the flexible substrate within the hole 30.

Optionally, the phosphor unit 40 includes an LED, a MINILED or a MICRO-LED.

Specifically, the LED, the MINILED and the MICRO-LED have relatively high luminous intensity, the LED, the MINILED or the MICRO-LED is adopted as the inorganic light emitting unit 40 to improve the luminous intensity of the flexible panel, and the LED, the MINILED and the MICRO-LED during mounting have relatively small volume and weight, so that the volume occupied by the inorganic light emitting unit 40 can be reduced, the influence of the inorganic light emitting unit 40 on the flexibility of the flexible mask is reduced, the flexibility of the flexible mask is improved, and the weight of the flexible mask is reduced.

Optionally, with continued reference to fig. 4 and 5, each flexible light-emitting panel further includes a light-homogenizing layer 50 and a pressure-sensitive adhesive layer 60, the light-homogenizing layer 50 is disposed on the light-emitting side of the organic light-emitting area light source, and the light-homogenizing layer 50 covers the organic light-emitting area light source; the light uniformizing layer 50 includes a plurality of scattering particles;

the pressure-sensitive adhesive layer 60 is arranged on the side of the light homogenizing layer 50 far away from the organic light-emitting area light source.

Specifically, the light uniformizing layer 50 is used to improve the light emission uniformity of the flexible light emitting panel, and the light uniformizing layer 50 may include a flexible substrate in which scattering particles are dispersed, where the scattering particles may be inorganic particles, such as titanium oxide or zirconium oxide.

In addition, the pressure sensitive adhesive layer 60 can be a medical pressure sensitive adhesive layer, and the flexible mask can be directly attached to the surface of the skin for use through the arrangement of the pressure sensitive adhesive layer.

It should be noted that fig. 4 and 5 only show the positions of the light uniformizing layer and the pressure sensitive adhesive layer when the organic light emitting area light source is of the top light emitting structure, and the invention is not limited thereto. When the organic light-emitting area source is of a bottom light-emitting structure, the light homogenizing layer can be arranged on one side, far away from the organic light-emitting area source, of the flexible circuit board, the pressure-sensitive adhesive layer is arranged on one side, far away from the organic light-emitting area source, of the light homogenizing layer, or the light homogenizing layer and the pressure-sensitive adhesive layer can be arranged on one side, far away from the organic light-emitting function layer, of the flexible substrate of the organic light-emitting area source, and the pressure-sensitive adhesive layer is arranged on one side, far away from the organic light-emitting area source, of the light homogenizing layer.

Optionally, the thickness range of the light uniformizing layer 50 includes 0.05mm to 2mm, and the light transmittance of the pressure sensitive adhesive layer 60 is greater than or equal to 80%.

Specifically, the thickness of the light homogenizing layer 50 is small, the light homogenizing characteristic is easily influenced, the manufacturing process difficulty is large, the thickness of the flexible light emitting panel can be increased if the thickness is too large, the thickness range of the light homogenizing layer 50 is 0.05mm-2mm, the manufacturing process difficulty can be reduced while the light homogenizing layer 50 is guaranteed to have the good light homogenizing characteristic, the thickness of the flexible light emitting panel is reduced, and therefore the thickness of the flexible mask is reduced.

The light transmittance of the pressure-sensitive adhesive layer 60 is greater than or equal to 80%, so that the pressure-sensitive adhesive layer 60 is prevented from influencing the light emitting efficiency of the flexible mask, and the flexible mask is ensured to have higher light emitting brightness.

Illustratively, the thickness of the leveling layer may be 0.2mm, and the light transmittance of the pressure-sensitive adhesive layer may be set to 85%.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.