Light-emitting device and wearable equipment

Abstract

The invention provides a light-emitting device and wearable equipment, which can be applied to the technical field of display and the technical field of wearable equipment. The light-emitting device comprises a plurality of light-emitting units, first poles of the light-emitting units respectively receive a plurality of power supply voltages; the detection unit is configured to detect access electrical parameters of the light emitting units to obtain a plurality of reference quantities, and the access electrical parameters represent the power-on states of the light emitting units; a plurality of input ends of the controller are electrically connected with a plurality of output ends of the detection unit respectively, a plurality of output ends of the controller are electrically connected with first poles of the plurality of light-emitting units respectively, and the controller is configured to control the light-emitting units to emit light according to a plurality of reference quantities. And determining a compensation signal for compensating the access electrical parameter of the abnormal light-emitting unit in the plurality of light-emitting units, and inputting the compensation signal into the first pole of the abnormal light-emitting unit.

Description

Technical Field

[0001] The present disclosure relates to the fields of display technology and wearable device technology, and more specifically to a light-emitting device and a wearable device. Background Art

[0002] OLED (Organic Light Emitting Diode) beauty masks perform various beauty operations on the skin, such as whitening, removing acne, and eliminating pimples, by emitting light of different colors.

[0003] During long-term use of the OLED beauty mask, a single light-emitting unit or light-emitting area of ​​the OLED beauty mask may experience a short circuit failure. In the event of a short circuit failure in a single light-emitting unit or light-emitting area of ​​the OLED beauty mask, the entire OLED beauty mask will be unevenly illuminated or damaged due to the short circuit failure, seriously affecting the user experience. Summary of the invention

[0004] In view of this, the present disclosure provides a light-emitting device and a wearable device.

[0005] According to one aspect of the present disclosure, there is provided a light-emitting device, comprising: a plurality of light-emitting units, wherein the first poles of the plurality of light-emitting units respectively receive a plurality of power supply voltages; a detection unit, configured to detect path electrical parameters of the plurality of light-emitting units to obtain a plurality of reference quantities, wherein the path electrical parameters characterize the power-on status of the light-emitting units; and a controller, wherein the plurality of input terminals of the controller are respectively electrically connected to the plurality of output terminals of the detection unit, and the plurality of output terminals of the controller are respectively electrically connected to the first poles of the plurality of light-emitting units, and the controller is configured to determine a compensation signal for compensating for the path electrical parameter of an abnormal light-emitting unit among the plurality of light-emitting units based on the plurality of reference quantities, and input the compensation signal into the first pole of the abnormal light-emitting unit.

[0006] For example, the detection unit detects the path electrical parameters of the plurality of light-emitting units to obtain the plurality of reference quantities, including: comparing the path electrical parameters of at least two of the plurality of light-emitting units to obtain the plurality of reference quantities.

[0007] For example, the detection unit includes N comparators, the two input ends of each comparator are respectively electrically connected to the second poles of M light-emitting units among the multiple light-emitting units, and the output ends of the N comparators are respectively electrically connected one by one to the N input ends of the controller, N is an integer greater than 1, and M is an integer greater than or equal to 1.

[0008] For example, the detection unit detects the path electrical parameters of the plurality of light-emitting units to obtain the plurality of reference quantities, including: adding the path electrical parameters of at least two of the plurality of light-emitting units to obtain the plurality of reference quantities.

[0009] For example, the detection unit includes N adders, the two input ends of each adder are respectively electrically connected to the second poles of M light-emitting units among the multiple light-emitting units, and the output ends of the N adders are respectively electrically connected one by one to the N input ends of the controller, N is an integer greater than 1, and M is an integer greater than or equal to 1.

[0010] For example, each light-emitting unit includes at least one light-emitting diode and a resistor; the first pole of the at least one light-emitting diode is electrically connected to the same power supply voltage and is electrically connected to the same output terminal of the controller, and the second pole of the at least one light-emitting diode is electrically connected to the first end of the resistor; the second end of the resistor is electrically connected to the input end of the detection unit.

[0011] For example, the above-mentioned light-emitting device also includes: a flexible connector, including: a plurality of first electrode leads and a plurality of second electrode leads; wherein the first ends of the above-mentioned plurality of first electrode leads are respectively electrically connected to the first poles of the above-mentioned plurality of light-emitting units, and the second ends of the above-mentioned plurality of first electrode leads are respectively electrically connected to the plurality of output ends of the above-mentioned controller; the first ends of the above-mentioned plurality of second electrode leads are electrically connected to the second pole of at least one of the above-mentioned plurality of light-emitting units, and the second ends of the above-mentioned plurality of second electrode leads are grounded; the above-mentioned plurality of second electrode leads are divided into two groups, which are respectively arranged on both sides of the above-mentioned plurality of first electrode leads.

[0012] For example, the two groups of second electrode leads include a plurality of target lead areas; for each target lead area, at least two first electrode leads among the plurality of first electrode leads are closely arranged in the target lead area.

[0013] For example, the plurality of first electrode leads are evenly arranged between the two groups of second electrode leads.

[0014] For example, the controller includes: a compensation electric parameter calculation unit, wherein multiple input terminals of the compensation electric parameter calculation unit are electrically connected to multiple output terminals of the detection unit, respectively, and the compensation electric parameter calculation unit is configured to determine the abnormal light-emitting unit among the multiple light-emitting units according to the multiple reference quantities, and determine the compensation electric parameter for compensating the path electric parameter of the abnormal light-emitting unit according to the multiple reference quantities; a pulse width modulation unit, wherein the input terminal of the pulse width modulation unit is electrically connected to the output terminal of the compensation electric parameter calculation unit, and the pulse width modulation unit is configured to generate a pulse width modulation signal according to the compensation electric parameter; an electric parameter generation unit, wherein the control terminal of the electric parameter generation unit is electrically connected to the output terminal of the pulse width modulation unit, and the multiple output terminals of the electric parameter generation unit are electrically connected to the first poles of the multiple light-emitting units, respectively, and the electric parameter generation unit is configured to generate the compensation signal according to the pulse width modulation signal, and input the compensation signal into the first pole of the abnormal light-emitting unit.

[0015] For example, the flexible connector further includes a heat dissipation layer, wherein the heat dissipation layer and a lead layer are stacked, and the lead layer is used to form the plurality of first electrode leads and the plurality of second electrode leads.

[0016] For example, the plurality of light-emitting units are disposed in a light-emitting area of ​​the light-emitting device, and the detection unit and the controller are disposed in a non-light-emitting area of ​​the light-emitting device.

[0017] For example, the non-luminous area is arranged on both sides of the luminous area in the horizontal direction.

[0018] According to another aspect of the present disclosure, a wearable device is provided, comprising the above-mentioned light-emitting device.

[0019] According to an embodiment of the present disclosure, by respectively receiving a plurality of power supply voltages at the first poles of a plurality of light-emitting units, it is possible to individually power each light-emitting unit, and the circuits in which the plurality of light-emitting units are located do not affect each other. The detection unit is used to detect the path electrical parameters of the plurality of light-emitting units, and a plurality of reference quantities are obtained, and a reference quantity that can reflect the difference between the path electrical parameters of the plurality of light-emitting units is obtained. The controller is used to determine a compensation signal for compensating the path electrical parameters of an abnormal light-emitting unit among the plurality of light-emitting units based on the plurality of reference quantities, and the compensation signal is input into the first pole of the abnormal light-emitting unit. Based on the compensation signal, the path electrical parameters of the abnormal light-emitting unit among the plurality of light-emitting units can be individually compensated, so that the luminous brightness of the abnormal light-emitting unit is consistent with the luminous brightness of other light-emitting units that are not abnormal, thereby improving the uniformity of the light irradiated by the light-emitting device, while avoiding damage to the entire light-emitting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to better understand the present solution and do not constitute a limitation of the present disclosure.

[0021] Figure 1A An OLED beauty mask in a fixed form is shown;

[0022] Figure 1B A flexible OLED beauty mask with a non-fixed form is shown;

[0023] Figure 2 A schematic structural diagram of a light emitting device according to an embodiment of the present disclosure is shown;

[0024] Figure 3 A schematic structural diagram of a light emitting device according to another embodiment of the present disclosure is shown;

[0025] Figure 4 A schematic structural diagram of a light emitting device according to another embodiment of the present disclosure is shown;

[0026] Figure 5 A schematic structural diagram of a light emitting device according to another embodiment of the present disclosure is shown;

[0027] Figure 6 A schematic structural diagram of a light emitting device according to another embodiment of the present disclosure is shown;

[0028] Fig. 7A A schematic structural diagram of a light emitting device according to another embodiment of the present disclosure is shown;

[0029] Figure 7B A schematic structural diagram of a light emitting device according to another embodiment of the present disclosure is shown;

[0030] Figure 8 A schematic diagram showing the structure of a wearable device according to an embodiment of the present disclosure is shown; and

[0031] Fig. 9 A schematic structural diagram of a wearable device according to another embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the present disclosure clearer, the technical scheme in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of them. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present disclosure. It should be noted that throughout the drawings, the same elements are represented by the same or similar figure marks. In the following description, some specific embodiments are only used for descriptive purposes and should not be understood as any limitation to the present disclosure, but are only examples of the embodiments of the present disclosure. Conventional structures or configurations will be omitted when they may cause confusion in the understanding of the present disclosure. It should be noted that the shapes and sizes of the components in the figures do not reflect the actual size and proportion, but only illustrate the contents of the embodiments of the present disclosure.

[0033] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should have the usual meanings understood by those skilled in the art. The words "first", "second" and similar words used in the embodiments of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components.

[0034] In addition, in the description of the embodiments of the present disclosure, the term "connected" or "connected to" may refer to two components being directly connected, or may refer to two components being connected via one or more other components. In addition, the two components may be connected or coupled via a wired or wireless manner.

[0035] OLED beauty masks can achieve advantages such as surface light source and good uniformity, and have good development prospects in the direction of phototherapy beauty.

[0036] OLED beauty masks emit different colors of light, which have different beauty effects on the skin. The red light band emitted by the OLED beauty mask has the effect of inhibiting inflammation and promoting collagen production. The blue light band it emits has the effect of shrinking pores and improving acne and blackheads. The yellow light band it emits has the effect of brightening and rejuvenating the skin and reducing skin inflammation. The green light band it emits has the effect of whitening the skin and controlling oil secretion. The light source of the OLED beauty mask emits gentle light that does not hurt the eyes. The irradiance uniformity of the surface light source is high. When the use distance is 1.5mm, the irradiance uniformity can exceed 70%, and the half-peak width is wide.

[0037] Figure 1A An OLED beauty mask in a fixed form is shown. Figure 1B A flexible OLED beauty mask with a non-fixed form is shown.

[0038] like Figure 1AAs shown, the OLED beauty mask has the same distance to different positions of the face.

[0039] like Figure 1B As shown, the distances of the flexible OLED beauty mask to the forehead 101, the area 102 for connecting the nose and cheek, the nose 103, the cheek 104 and the chin 105 are not exactly the same. Figure 1B In the figure, different grayscales are used to represent different distances from the flexible OLED beauty mask to the face.

[0040] See also Figure 1A and Figure 1B It can be seen that compared with fixed-form OLED beauty masks, non-fixed-form flexible OLED beauty masks can set different optimal use distances based on the characteristics of different facial positions, and can better fit the facial skin, meeting consumers' demand for light therapy masks. Therefore, non-fixed-form flexible OLED beauty masks can also improve the user experience while meeting the user's usage needs.

[0041] The irradiation power of the OLED beauty mask is between 5-10mW / cm2. When the OLED beauty mask is used to illuminate the face for 12min to 25min, the equivalent brightness of the face can reach 2000nit. As the size of the OLED beauty mask increases, the total current flowing through the OLED beauty mask will increase to ensure that the equivalent brightness of the OLED beauty mask remains unchanged.

[0042] In the related art, multiple OLEDs in an OLED beauty mask are connected in parallel. In the event of a short circuit fault in a single light-emitting unit or light-emitting area of ​​the OLED beauty mask, the current flowing through the single light-emitting unit or light-emitting area where the short circuit fault occurs will increase instantaneously, and as the size of the OLED beauty mask increases, more current will flow through the single light-emitting unit or light-emitting area where the short circuit fault occurs. As a result, the brightness of the single light-emitting unit or light-emitting area in the OLED beauty mask where the short circuit fault occurs will increase significantly, and the brightness of the OLED beauty mask irradiating the face will be uneven. Furthermore, in the event that the current flowing through the single light-emitting unit or light-emitting area where the short circuit fault occurs reaches a certain value, the circuit where the single light-emitting unit or light-emitting area where the short circuit fault occurs is located will burn out due to the difficulty in withstanding the current, which may cause damage to the entire OLED beauty mask.

[0043] The entire OLED beauty mask will be unevenly illuminated or damaged due to a short circuit failure, which will seriously affect the user experience. Therefore, it is urgent to find a technical solution that can prevent the entire OLED beauty mask from being unevenly illuminated or damaged due to a short circuit failure when a single light-emitting unit or light-emitting area of ​​the OLED beauty mask has a short circuit failure.

[0044] Embodiments of the present disclosure provide a light-emitting device and a wearable device, which can be applied to the fields of display technology and wearable device technology.

[0045] The light-emitting device and wearable device provided by the embodiments of the present disclosure, in the event of a short-circuit fault, use a newly added detection unit to detect the current or voltage difference at the location of the faulty OLED, and the current or voltage difference reflects the difference in brightness at the location of the faulty OLED and the brightness at the location of the OLED that has not failed. Then, a newly added controller is used to adjust the current or voltage at the location of the faulty OLED, so that the brightness of the light at the location of the faulty OLED is consistent with the brightness of the light at the location of the OLED that has not failed, thereby improving the uniformity of the light irradiated by the light-emitting device and the wearable device. At the same time, the entire light-emitting device and the wearable device are prevented from being damaged due to a short-circuit fault, thereby improving the reliability of the circuits of the light-emitting device and the wearable device.

[0046] Figure 2 A schematic structural diagram of a light emitting device according to an embodiment of the present disclosure is shown.

[0047] like Figure 2 As shown, the light emitting device 200 may include a plurality of light emitting units 210 , a detection unit 220 and a controller 230 .

[0048] The first electrodes of the plurality of light emitting units 210 receive a plurality of power supply voltages respectively. The first electrodes may be anodes. Each light emitting unit may include at least one OLED.

[0049] In the case where the first pole is an anode, by respectively receiving a plurality of power supply voltages at the first poles of the plurality of light-emitting units 210, the anodes of the plurality of light-emitting units 210 are arranged at intervals and are not connected to each other, and each light-emitting unit 210 is powered separately. In the case of a short circuit failure in any one of the plurality of light-emitting units 210, the power-on state of other light-emitting units 210 will not be affected.

[0050] For example, the display panel where the multiple light-emitting units 210 are located can adopt a splicing design to achieve the first pole interval arrangement of the multiple light-emitting units 210 without being connected to each other.

[0051] The detection unit 220 may be configured to detect the path electrical parameters of the plurality of light emitting units 210 to obtain a plurality of reference quantities, wherein the path electrical parameters characterize the power-on state of the light emitting unit and reflect the luminous intensity of the light emitting unit.

[0052] For example, the path electrical parameter may be a current or a voltage of a path formed by a circuit in which the light-emitting unit is located.

[0053] According to the embodiment of the present disclosure, by using the detection unit 220 to detect the path electrical parameters of multiple light-emitting units 210, multiple reference quantities are obtained. The path electrical parameters represent the power-on state of the light-emitting unit, and the detection unit 220 is used to detect the current or voltage of the circuit where each light-emitting unit 210 is located. When a short circuit fault occurs in the circuit where one of the light-emitting units is located, the change in the voltage or current of the circuit where the faulty light-emitting unit is located can be detected. At the same time, the short circuit fault location and the current or voltage difference before and after the fault can be recorded based on multiple reference quantities.

[0054] The multiple input terminals of the controller 230 can be electrically connected to the multiple output terminals output of the detection unit 220, respectively, and the multiple output terminals of the controller 230 can be electrically connected to the first electrodes of the multiple light-emitting units, respectively. The controller 230 can be configured to determine a compensation signal for compensating the path electrical parameter of the abnormal light-emitting unit among the multiple light-emitting units 210 according to the multiple reference quantities, and input the compensation signal to the first electrode of the abnormal light-emitting unit.

[0055] For example, the abnormal light emitting unit may be a light emitting unit with a short circuit fault. At this time, due to the short circuit fault, the brightness of the light emitted by the abnormal light emitting unit will be significantly increased compared to before the fault.

[0056] For example, the compensation signal may be a voltage signal or a current signal.

[0057] According to an embodiment of the present disclosure, by respectively receiving a plurality of power supply voltages at the first poles of a plurality of light-emitting units, it is possible to individually power each light-emitting unit, and the circuits in which the plurality of light-emitting units are located do not affect each other. The detection unit is used to detect the path electrical parameters of the plurality of light-emitting units, and a plurality of reference quantities are obtained, and a reference quantity that can reflect the difference between the path electrical parameters of the plurality of light-emitting units is obtained. The controller is used to determine a compensation signal for compensating the path electrical parameters of an abnormal light-emitting unit among the plurality of light-emitting units based on the plurality of reference quantities, and the compensation signal is input into the first pole of the abnormal light-emitting unit. Based on the compensation signal, the path electrical parameters of the abnormal light-emitting unit among the plurality of light-emitting units can be individually compensated, so that the luminous brightness of the abnormal light-emitting unit is consistent with the luminous brightness of other light-emitting units that are not abnormal, thereby improving the uniformity of the light irradiated by the light-emitting device, while avoiding damage to the entire light-emitting device.

[0058] Figure 2Each light-emitting unit 210 may include at least one light-emitting diode Dn and a resistor Rn. The first pole of the at least one light-emitting diode Dn may be electrically connected to the same power supply voltage and electrically connected to the same output terminal of the controller 230. The second pole of the at least one light-emitting diode Dn may be electrically connected to the first end of the resistor Rn. The second end of the resistor Rn may be electrically connected to the input terminal of the detection unit 220. The second end of the resistor Rn is also the second pole of the light-emitting unit 210. The second pole may be a cathode. The resistor Rn may have a high impedance property.

[0059] For example, the light emitting diode Dn may be an OLED.

[0060] For example, the number of light emitting diodes Dn included in each light emitting unit 210 may be 1, 2, 3, 4, 5, 7, 8 or 10, etc. The number of light emitting diodes Dn included in each light emitting unit 210 may be selected according to actual conditions and is not limited here.

[0061] For example, when each light emitting unit 210 includes a light emitting diode Dn and a resistor Rn, a first electrode of the light emitting diode Dn may be electrically connected to a power supply voltage and to an output terminal of the controller 230. A second electrode of the light emitting diode Dn may be electrically connected to a first end of the resistor Rn.

[0062] For example, in the case where each light-emitting unit 210 includes two light-emitting diodes Dn and a resistor Rn, the first electrodes of the two light-emitting diodes Dn can be electrically connected to the same power supply voltage and electrically connected to the same output terminal of the controller 230. The second electrodes of the two light-emitting diodes Dn can be electrically connected to the first end of the resistor Rn. The second end of the resistor Rn can be electrically connected to the first input terminal in1 or the second input terminal in2 of the detection unit 220. In this case, compared with the embodiment in which each light-emitting unit 210 includes one light-emitting diode Dn, the power supply voltage, the resistor Rn, and the output terminal of the controller 230 used by the light-emitting device 200 can be reduced, thereby saving design space and cost.

[0063] According to the embodiments of the present disclosure, since each light-emitting unit includes at least one light-emitting diode Dn and a resistor Rn, the resistor Rn may have a high impedance property, so that when a short circuit fault occurs in the light-emitting unit, the change in the current flowing through the abnormal light-emitting unit is smaller than that before the fault occurs, thereby preventing the entire light-emitting device from burning out and reducing the chance of the entire light-emitting device burning out due to a short circuit. The reliability of the light-emitting device is further improved.

[0064] The detection unit 220 detects the path electrical parameters of the plurality of light-emitting units 210 to obtain the plurality of reference quantities, which may include: comparing the path electrical parameters of at least two light-emitting units 210 among the plurality of light-emitting units 210 to obtain the plurality of reference quantities.

[0065] For example, the detection unit may include N comparators, where N may be an integer greater than 1. The N comparators may be used to compare the path electrical parameters of at least two light emitting units 210 among the plurality of light emitting units 210 to obtain a plurality of reference quantities.

[0066] For example, N may be 1, 2, 3, 5 or 10, etc. N may be selected according to actual conditions and is not limited here.

[0067] According to an embodiment of the present disclosure, by comparing the path electrical parameters of at least two light-emitting units among a plurality of light-emitting units to obtain a plurality of reference quantities, a reference quantity reflecting the difference between the plurality of light-emitting units can be obtained, thereby realizing detection of the location of the fault based on the comparison quantity between the path electrical parameters of at least two light-emitting units among the plurality of light-emitting units.

[0068] Figure 3 A schematic structural diagram of a light emitting device according to another embodiment of the present disclosure is shown.

[0069] like Figure 3 As shown, the light emitting device 300 may include a plurality of light emitting units 310 , a detection unit and a controller 330 . The detection unit may include N comparators 320 .

[0070] Figure 3 The plurality of light emitting units 310 and the controller 330 are respectively connected to Figure 2 The multiple light-emitting units 210 and the controller 230 have similar structures and functions, and for the sake of simplicity, they are not described here. Figure 3 The light emitting device 300 and Figure 2 The difference between the light emitting device 200 in the embodiment is that: Figure 2 The detection unit 220 in the example is replaced by N comparators 320 , so as to achieve the effect of utilizing N comparators 320 to realize the detection function of the detection unit 220 .

[0071] For example, the comparator 320 may be a voltage comparator or a current comparator.

[0072] exist Figure 3 In the embodiment, two input terminals of each comparator 320 are respectively electrically connected to the second electrodes of M light-emitting units 310 in the plurality of light-emitting units 310. The output terminals of the N comparators 320 are respectively electrically connected to the N input terminals of the controller 330. Wherein, M is an integer greater than or equal to 1.

[0073] Two input terminals of a single comparator 320 are connected to different M light-emitting units. When M is greater than 1, the M light-emitting units may be a plurality of adjacent light-emitting units. The same light-emitting unit may be electrically connected to the input terminals of different comparators. The light-emitting units electrically connected to different comparators may be partially the same or completely different.

[0074] For example, M can be 1, 2, 3, 4, 7, 9 or 10, etc. M can be selected according to actual conditions and is not limited here.

[0075] like Figure 3 As shown, by electrically connecting the two input terminals of each comparator to the second electrodes of M light-emitting units among the multiple light-emitting units, and electrically connecting the output terminals of N comparators to the N input terminals of the controller one by one, the comparator is used to detect the location of the fault.

[0076] When M is 2, see Figure 4 .

[0077] Figure 4 A schematic structural diagram of a light emitting device according to another embodiment of the present disclosure is shown.

[0078] like Figure 4 As shown, the light emitting device 400 may include a plurality of light emitting units 410 , a detection unit and a controller 430 . The detection unit may include N comparators 420 .

[0079] Figure 4 The plurality of light emitting units 410 and the controller 430 are respectively connected to Figure 3 The multiple light-emitting units 310 and the controller 330 have similar structures and functions, and for the sake of simplicity, they are not described here in detail.

[0080] For example, the comparator 420 may be a voltage comparator or a current comparator.

[0081] exist Figure 4 In the embodiment, two input terminals of each comparator 420 are respectively electrically connected to the second electrodes of two light emitting units 410 in the plurality of light emitting units 410. The output terminals of the N comparators 420 are respectively electrically connected to the N input terminals of the controller 430 one by one.

[0082] According to an embodiment of the present disclosure, by utilizing the two input terminals of each comparator to be electrically connected to the second poles of two light-emitting units among a plurality of light-emitting units, and the output terminals of N comparators to be electrically connected one by one to N input terminals of a controller, it is possible to utilize comparators to compare and detect the voltages or currents of multiple light-emitting units, thereby saving design space and cost.

[0083] The detection unit 210 detects the path electrical parameters of the plurality of light emitting units 220 to obtain the plurality of reference quantities, which may include: adding the path electrical parameters of at least two light emitting units 220 among the plurality of light emitting units 220 to obtain the plurality of reference quantities.

[0084] For example, the detection unit may include N adders, where N is an integer greater than 1. The N adders may be used to add the path electrical parameters of at least two light emitting units 210 among the plurality of light emitting units 210 to obtain a plurality of reference quantities.

[0085] For example, the adder may be a non-inverting adder or an inverting adder.

[0086] According to an embodiment of the present disclosure, multiple reference quantities are obtained by adding the path electrical parameters of at least two light-emitting units among a plurality of light-emitting units, thereby realizing detection of the fault location based on the sum of the path electrical parameters of at least two light-emitting units among a plurality of light-emitting units.

[0087] Figure 5 A schematic structural diagram of a light emitting device according to another embodiment of the present disclosure is shown.

[0088] like Figure 5 As shown, the light emitting device 500 may include a plurality of light emitting units 510 , a detection unit and a controller 530 . The detection unit may include N adders 520 .

[0089] Figure 5 The plurality of light emitting units 510 and the controller 530 are respectively connected to Figure 2 The multiple light-emitting units 210 and the controller 230 have similar structures and functions, which will not be described here for simplicity. Figure 5 The light emitting device 500 and Figure 2 The difference between the light emitting device 200 in the embodiment is that: Figure 2 The detection unit 220 in the example is replaced by N adders 520 , so as to achieve the effect of utilizing N adders 520 to realize the detection function of the detection unit 220 .

[0090] exist Figure 5 In the embodiment, two input terminals of each adder 520 are respectively electrically connected to the second electrodes of M light emitting units 510 in the plurality of light emitting units 510. The output terminals of the N adders 520 are respectively electrically connected to the N input terminals of the controller 530 one by one.

[0091] Two input terminals of a single adder 520 are connected to different M light-emitting units. The same light-emitting unit can be electrically connected to the input terminals of different adders 520. The light-emitting units connected to different adders 520 can be partially the same or completely different.

[0092] According to an embodiment of the present disclosure, by utilizing the two input ends of each adder to be electrically connected to the second poles of M light-emitting units among the multiple light-emitting units, and the output ends of the N adders to be electrically connected one by one to the N input ends of the controller, the adder is utilized to detect the location where the fault occurs.

[0093] Figure 6 A schematic structural diagram of a light emitting device according to another embodiment of the present disclosure is shown.

[0094] like Figure 6 As shown, the light emitting device 600 may include a plurality of light emitting units 610 , a detection unit 620 and a controller 630 .

[0095] Figure 6 The plurality of light emitting units 610 and detection units 620 are respectively connected to Figure 2 The multiple light emitting units 210 and detection units 220 have similar structures and functions, and for the sake of simplicity, they are not described here.

[0096] Figure 6 The controller 630 in the embodiment may include a compensation electric parameter calculation unit 631 , a pulse width modulation unit 632 and an electric parameter generation unit 633 .

[0097] The multiple input terminals of the compensation electric parameter calculation unit 631 can be electrically connected to the multiple output terminals output of the detection unit 620. The compensation electric parameter calculation unit 631 can be configured to determine the abnormal light-emitting unit among the multiple light-emitting units 610 according to the multiple reference quantities, and determine the compensation electric parameter for compensating the path electric parameter of the abnormal light-emitting unit according to the multiple reference quantities.

[0098] An input terminal of the pulse width modulation unit 632 may be electrically connected to an output terminal of the compensation electric parameter calculation unit 631. The pulse width modulation unit 632 may be configured to generate a pulse width modulation signal according to the compensation electric parameter.

[0099] The control terminal control of the electric parameter generating unit 633 can be electrically connected to the output terminal of the pulse width modulation unit 632. The multiple output terminals of the electric parameter generating unit 633 can be electrically connected to the first poles of the multiple light-emitting units 610 respectively. The electric parameter generating unit 633 can be configured to generate a compensation signal according to the pulse width modulation signal, and input the compensation signal to the first pole of the abnormal light-emitting unit.

[0100] For example, the pulse width modulation unit 632 may be a PWM (Pulse width modulation wave) unit. The electrical parameter generation unit 633 may be a voltage generation unit or a current generation unit.

[0101] like Figure 6As shown, by using a compensation electric parameter calculation unit to determine the compensation electric parameter used to compensate the path electric parameter of the abnormal light-emitting unit according to multiple reference quantities, using a pulse width modulation unit to generate a pulse width modulation signal according to the compensation electric parameter, using an electric parameter generation unit to generate a compensation signal according to the pulse width modulation signal, and inputting the compensation signal into the first pole of the abnormal light-emitting unit, a compensation signal for compensating the path electric parameter of the abnormal light-emitting unit among multiple light-emitting units determined based on multiple reference quantities is realized, and the path electric parameter of the abnormal light-emitting unit among multiple light-emitting units is compensated separately. The luminous brightness of the abnormal light-emitting unit is consistent with the luminous brightness of other light-emitting units that are not abnormal, thereby improving the uniformity of the light irradiated by the light-emitting device and avoiding damage to the entire light-emitting device.

[0102] According to the embodiments of the present disclosure, Figure 2 The detection unit 220 is built into the controller 230, and the current or voltage of each light-emitting unit is connected to the controller. The detection unit 220 in the controller 230 is used to compare and detect all inputs, locate the fault position, output the current or voltage difference to the controller 230, and perform feedback compensation through the regulation of the controller 230 to adjust the uniformity of the light-emitting device.

[0103] Fig. 7A A schematic structural diagram of a light emitting device according to another embodiment of the present disclosure is shown.

[0104] like Fig. 7A As shown, the light emitting device 700 may include a plurality of light emitting units 710 , a detection unit, a controller, and a flexible connector 740 .

[0105] Fig. 7A The plurality of light emitting units 710, the detection unit and the controller are respectively connected with Figure 2 The multiple light-emitting units 210, detection units 220 and controller 230 have similar structures and functions, and for the sake of simplicity, they are not repeated here.

[0106] For example, the flexible connector 740 may be a flexible printed circuit (FPC). The flexible connector 740 may be used to bind the display panel where the plurality of light emitting units 710 are located from the side.

[0107] Fig. 7A The flexible connector 740 in may include a plurality of first electrode leads, ie, VCC leads, and a plurality of second electrode leads, ie, GND leads.

[0108] Fig. 7AThe first ends of the plurality of first electrode leads can be electrically connected to the first electrodes of the plurality of light emitting units 710. The second ends of the plurality of first electrode leads can be electrically connected to the plurality of output terminals of the controller.

[0109] The first ends of the plurality of second electrode leads are electrically connected to the second electrode of at least one of the plurality of light emitting units 710. The second ends of the plurality of second electrode leads are grounded.

[0110] The plurality of second electrode leads are divided into two groups and are respectively arranged on both sides of the plurality of first electrode leads.

[0111] According to an embodiment of the present disclosure, the plurality of second electrode leads are divided into two groups and respectively arranged on both sides of the plurality of first electrode leads, so that the plurality of first electrode leads are wrapped around the outer periphery of the two groups of second electrode leads to shield interference.

[0112] Fig. 7A A plurality of target lead areas may be included between the two groups of second electrode leads. For each target lead area, at least two first electrode leads among the plurality of first electrode leads are closely arranged in the target lead area. The plurality of target lead areas are arranged at intervals.

[0113] For example, at least two first electrode leads electrically connected to the second electrodes of at least two light-emitting units having the same functions and / or properties may be closely arranged in the target lead area.

[0114] According to an embodiment of the present disclosure, for each target lead area, at least two of the multiple first electrode leads are closely arranged in the target lead area to widen the wiring through the target area, thereby centrally dissipating the heat of the at least two first electrode leads in the target lead area, so that the at least two first electrode leads can be more reliable when bearing the current flowing through them, thereby achieving the effect of centralized heat dissipation and current dispersion based on the target lead area.

[0115] Figure 7B A schematic structural diagram of a light emitting device according to another embodiment of the present disclosure is shown.

[0116] Figure 7B The light emitting device and Fig. 7A The difference between the light emitting device 700 in FIG. 7 is that the plurality of first electrode leads in the flexible connector 740 are evenly arranged between the two groups of second electrode leads.

[0117] According to an embodiment of the present disclosure, by evenly arranging a plurality of first electrode leads in the flexible connector 740 between two groups of second electrode leads, each first electrode lead is individually wired, so that the entire flexible connector 740 can be evenly loaded.

[0118] The flexible connector 740 may further include a heat dissipation layer. The heat dissipation layer and the lead layer are stacked, for example, in a direction perpendicular to the paper surface, and the lead layer is used to form a plurality of first electrode leads and a plurality of second electrode leads.

[0119] According to an embodiment of the present disclosure, a metal core may be provided in the heat dissipation layer.

[0120] According to the embodiments of the present disclosure, the heat dissipation layer and the lead layer are stacked to achieve heat dissipation of the lead layer based on the heat dissipation layer, thereby improving the stability and reliability of the lead layer.

[0121] For example, based on Fig. 7A or Figure 7B In the case where the light emitting device in the embodiment forms an OLED beauty mask, the flexible connector 740 may be an FPC. The FPC has good bending performance. According to the circuit design of the OLED beauty mask, a single-layer FPC may meet the use requirements, that is, the FPC may only include a lead layer.

[0122] In order to improve the stability and reliability of the lead layer, a double-layer or multi-layer FPC design can be used. One layer of the FPC can be used for routing, and the remaining layers can be added with metal cores for heat dissipation. That is, the FPC can include a lead layer and at least one heat dissipation layer with a metal core, and the heat dissipation layer and the lead layer are stacked. During use, the light-emitting unit in the light-emitting device can be directed toward the face, and the heat dissipation layer of the FPC can be directed outward to form air convection and improve the heat dissipation effect. At the same time, since there are no components on the FPC, electromagnetic radiation can be reduced.

[0123] The temperature uniformity of the printed circuit board (PCB) is better than that of the FPC, so the components can be designed on the PCB. For example, the detection unit and the controller included in the light emitting device 700 can be designed on the PCB. The PCB and the FPC can be covered with thermally conductive graphene and a beautifying board.

[0124] Figure 2 The plurality of light emitting units 210 may be arranged in the light emitting area of ​​the light emitting device 200, and the detection unit 220 and the controller 230 may be arranged in the non-light emitting area of ​​the light emitting device 200. The non-light emitting area is arranged on both sides of the light emitting area in the horizontal direction.

[0125] For example, in the case of forming an OLED beauty mask based on a light-emitting device, the light-emitting area may be an area projected onto the face, and the non-light-emitting area may be an area projected onto the periphery of the face.

[0126] For example, the non-luminous area can be set at the area projected to the two ears to save space. In the case where the detection unit 220 and the controller 230 are designed on a PCB, the PCB area can be covered by the non-luminous area of ​​the OLED beauty mask, such as the area projected to the two ears. In the case where the non-luminous area is set on both sides of the luminous area in the horizontal direction, PCB boards can be set on both sides of the luminous area in the horizontal direction.

[0127] For example, the detection unit 220 and the controller 230 located at the first end of the light-emitting area in the horizontal direction can be used to detect and regulate the fault of at least one light-emitting unit 210 near the first end of the multiple light-emitting units 210. The detection unit 220 and the controller 230 located at the second end of the light-emitting area in the horizontal direction can be used to detect and regulate the fault of at least one light-emitting unit 210 near the second end of the multiple light-emitting units 210. Therefore, by designing PCB boards on both sides of the light-emitting area, the voltage drop can be reduced, the current distribution can be made more uniform, and the uniformity of the light-emitting areas on the left and right sides can be improved. In addition, since there are no additional accessories when using the OLED beauty mask, the OLED beauty mask is more beautiful as a whole, and it is easy and convenient to use.

[0128] For example, the non-luminous area projected onto the ear may be extended to the back of the head for fixation, and there is no limit on the size of the non-luminous area.

[0129] For example, since the non-luminous area can be bent at will and does not interfere with the luminous area, and heat conduction will not interfere with the heat dissipation of the luminous area, the electrode leads arranged on the FPC can also be pulled out in the non-luminous area of ​​the light-emitting device 200. At the same time, the PCB where the detection unit 220 and the controller 230 are located can be placed separately in the control box. In the control box, the electrode leads in the FPC and the output end of the controller 230 on the PCB are electrically connected, so that the PCB where the detection unit 220 and the controller 230 are located can be placed separately. At this time, the PCB where the detection unit 220 and the controller 230 are located does not require much space and will not interfere with the overall shape design of the OLED beauty mask.

[0130] According to an embodiment of the present disclosure, Figures 2 to 7B In any light-emitting device, by respectively receiving a plurality of power supply voltages at the first poles of the plurality of light-emitting units in the light-emitting device, each light-emitting unit is powered separately, and the circuits in which the plurality of light-emitting units are located do not affect each other. Furthermore, when each light-emitting unit includes at least one OLED, the pixels formed by the OLED in the light-emitting device are partitioned. Therefore, the detection unit and the controller included in the light-emitting device only need to detect the voltage or current of each light-emitting unit and then perform separate regulation. The circuit is simple, the architecture is simple, there is no influence of other parameters, the regulation mechanism is simple, and it is easier to achieve control of the uniformity of the light emitted by the plurality of light-emitting units.

[0131] According to the embodiments of the present disclosure, Figures 2 to 7B Any light-emitting device in the light-emitting device does not require IC (Integrated Circuit), and the circuit architecture is simple. At the same time, there is no MIPI (Mobile Industry Processor Interface) signal transmission, and each transmission signal in the light-emitting device will not be attenuated by distance interference. Therefore, when the flexible connector in the light-emitting device is FPC, the length of FPC is not limited. Only a plurality of first electrode leads and a plurality of second electrode leads need to be set in the FPC, and power is supplied to a plurality of light-emitting units based on the plurality of first electrode leads and the plurality of second electrode leads. The design of FPC is varied.

[0132] According to an embodiment of the present disclosure, based on Figures 2 to 7B In the case where any of the light-emitting devices in the OLED beauty mask is formed, the OLED beauty mask may include at least one light-emitting device. For example, the OLED beauty mask may include one light-emitting device. The OLED beauty mask may also be provided with one light-emitting device in the areas corresponding to the forehead, the area for connecting the nose and the cheek, the nose, the cheek, and the chin, respectively, and then the light-emitting devices are spliced.

[0133] Figure 8 A schematic structural diagram of a wearable device according to an embodiment of the present disclosure is shown.

[0134] like Figure 8 As shown, the wearable device 800 may include a light emitting device, and the light emitting device may include a plurality of light emitting units 810 .

[0135] For example, Figure 8 The light emitting device may be Figure 2-7B Any light-emitting device in.

[0136] exist Figure 8 In the embodiment, the light emitting device includes a plurality of light emitting units 810 arranged in the light emitting area of ​​the light emitting device, wherein the light emitting area is the area projected onto the face. The detection unit and the controller included in the light emitting device may be arranged in the non-light emitting area of ​​the light emitting device. The non-light emitting area may be the area projected onto the periphery of the face, and the non-light emitting area may include the area projected onto the two ears. The detection unit and the controller in the light emitting device may be designed on a PCB, and the PCB may be placed in the non-light emitting areas of the light emitting device projected onto the two ears.

[0137] Fig. 9 A schematic structural diagram of a wearable device according to another embodiment of the present disclosure is shown.

[0138] like Fig. 9As shown, the wearable device 900 may include a light emitting device, and the light emitting device may include a plurality of light emitting units 910 .

[0139] For example, Fig. 9 The light emitting device in the Figure 2-7B Any light-emitting device in.

[0140] exist Fig. 9 In the embodiment, the light emitting device includes a plurality of light emitting units 910 arranged in the light emitting area of ​​the light emitting device, wherein the light emitting area is the area projected onto the face. The electrode leads arranged on the FPC included in the light emitting device can be pulled out. At the same time, the detection unit and the controller can be designed on the PCB, and the PCB can be placed separately in the control box. In the control box, the electrode leads in the FPC and the output end of the controller on the PCB are electrically connected, so that the PCB board can be placed separately.

[0141] It will be appreciated by those skilled in the art that the features described in the various embodiments and / or claims of the present disclosure may be combined and / or combined in a variety of ways, even if such combinations and / or combinations are not explicitly described in the present disclosure. In particular, the features described in the various embodiments and / or claims of the present disclosure may be combined and / or combined in a variety of ways without departing from the spirit and teachings of the present disclosure. All of these combinations and / or combinations fall within the scope of the present disclosure.

[0142] The embodiments of the present disclosure are described above. However, these embodiments are only for illustrative purposes and are not intended to limit the scope of the present disclosure. Although the embodiments are described above separately, this does not mean that the measures in the various embodiments cannot be used in combination to advantage. The scope of the present disclosure is defined by the attached claims and their equivalents. Without departing from the scope of the present disclosure, those skilled in the art may make a variety of substitutions and modifications, which should all fall within the scope of the present disclosure.

Claims

1. A light emitting device, comprising: A plurality of light-emitting units, wherein first electrodes of the plurality of light-emitting units receive a plurality of power supply voltages respectively; A detection unit, configured to detect the path electrical parameters of the plurality of light-emitting units to obtain a plurality of reference quantities, wherein the path electrical parameters represent the power-on state of the light-emitting units; A controller, wherein the multiple input terminals of the controller are electrically connected to the multiple output terminals of the detection unit, respectively, and the multiple output terminals of the controller are electrically connected to the first poles of the multiple light-emitting units, respectively, and the controller is configured to determine a compensation signal for compensating for the path electrical parameters of an abnormal light-emitting unit among the multiple light-emitting units based on the multiple reference quantities, and input the compensation signal into the first pole of the abnormal light-emitting unit.

2. The light emitting device according to claim 1, wherein: The detection unit detects the path electrical parameters of the plurality of light-emitting units, and obtains a plurality of reference quantities including: The path electrical parameters of at least two of the plurality of light-emitting units are compared to obtain the plurality of reference quantities.

3. The light emitting device according to claim 2, wherein: The detection unit includes N comparators, and the two input ends of each comparator are respectively electrically connected to the second poles of M light-emitting units among the multiple light-emitting units, and the output ends of the N comparators are respectively electrically connected one by one to the N input ends of the controller, N is an integer greater than 1, and M is an integer greater than or equal to 1.

4. The light emitting device according to claim 1, wherein: The detection unit detects the path electrical parameters of the plurality of light-emitting units, and obtains a plurality of reference quantities including: The path electrical parameters of at least two of the plurality of light-emitting units are added together to obtain the plurality of reference quantities.

5. The light emitting device according to claim 4, wherein: The detection unit includes N adders, two input ends of each adder are respectively electrically connected to the second poles of M light-emitting units among the multiple light-emitting units, and the output ends of the N adders are respectively electrically connected one by one to N input ends of the controller, N is an integer greater than 1, and M is an integer greater than or equal to 1.

6. The light emitting device according to any one of claims 1 to 5, wherein: Each light emitting unit includes at least one light emitting diode and a resistor; The first electrode of the at least one light emitting diode is electrically connected to the same power supply voltage and to the same output terminal of the controller, and the second electrode of the at least one light emitting diode is electrically connected to the first end of the resistor; The second end of the resistor is electrically connected to the input end of the detection unit.

7. The light emitting device according to any one of claims 1 to 6, wherein: Also includes: A flexible connector, comprising: a plurality of first electrode leads and a plurality of second electrode leads; Wherein, the first ends of the plurality of first electrode leads are respectively electrically connected to the first electrodes of the plurality of light-emitting units, and the second ends of the plurality of first electrode leads are respectively electrically connected to the plurality of output ends of the controller; The first ends of the plurality of second electrode leads are electrically connected to the second electrode of at least one of the plurality of light-emitting units, and the second ends of the plurality of second electrode leads are grounded; The plurality of second electrode leads are divided into two groups and are respectively disposed on both sides of the plurality of first electrode leads.

8. The light emitting device according to claim 7, wherein: The two groups of second electrode leads include a plurality of target lead areas; For each target lead area, at least two first electrode leads among the plurality of first electrode leads are closely arranged in the target lead area.

9. The light emitting device according to claim 7, wherein: The plurality of first electrode leads are evenly arranged between the two groups of second electrode leads.

10. The light emitting device according to any one of claims 1 to 9, wherein: The controller comprises: a compensation electrical parameter calculation unit, wherein a plurality of input terminals of the compensation electrical parameter calculation unit are electrically connected to a plurality of output terminals of the detection unit respectively, and the compensation electrical parameter calculation unit is configured to determine an abnormal light-emitting unit among the plurality of light-emitting units according to the plurality of reference quantities, and determine a compensation electrical parameter for compensating a path electrical parameter of the abnormal light-emitting unit according to the plurality of reference quantities; A pulse width modulation unit, wherein an input end of the pulse width modulation unit is electrically connected to an output end of the compensation electrical parameter calculation unit, and the pulse width modulation unit is configured to generate a pulse width modulation signal according to the compensation electrical parameter; An electrical parameter generating unit, wherein the control end of the electrical parameter generating unit is electrically connected to the output end of the pulse width modulation unit, the multiple output ends of the electrical parameter generating unit are electrically connected to the first poles of the multiple light-emitting units respectively, and the electrical parameter generating unit is configured to generate the compensation signal according to the pulse width modulation signal, and input the compensation signal to the first pole of the abnormal light-emitting unit.

11. The light emitting device according to any one of claims 7 to 10, wherein: The flexible connector further includes a heat dissipation layer, wherein the heat dissipation layer and a lead layer are stacked, and the lead layer is used to form the plurality of first electrode leads and the plurality of second electrode leads.

12. The light emitting device according to any one of claims 1 to 11, wherein: The plurality of light-emitting units are arranged in a light-emitting area of ​​the light-emitting device, and the detection unit and the controller are arranged in a non-light-emitting area of ​​the light-emitting device.

13. The light emitting device according to claim 12, wherein: The non-luminous area is arranged on both sides of the luminous area in a horizontal direction.

14. A wearable device, comprising the light-emitting device according to any one of claims 1 to 13.

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