Stabilized power supply system of OLED display module and electronic equipment

Abstract

The present disclosure relates to the technical field of voltage stabilizing circuit, and particularly relates to a voltage stabilizing power supply system of an OLED display module and electronic equipment. The voltage stabilizing power supply system of the OLED display module comprises a power supply module, an OLED display module and a feedback module, wherein the power supply module comprises an output end and a feedback end; the input end of the OLED display module is connected to the output end of the power supply module through a line with impedance; the feedback module is connected between the input end of the OLED display module and the feedback end; the power supply module is used for adjusting the voltage of the output end of the power supply module according to the feedback module, so that the voltage of the input end of the OLED display module is within a first preset range. The technical scheme of the embodiment of the present disclosure improves the power supply efficiency of the power supply of the OLED display module and reduces the power consumption.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of information display, and in particular, to a voltage-stabilized power supply system of an OLED display module and an electronic device. BACKGROUND

[0002] The power supply path of a common OLED screen mainly consists of a DIC for controlling the charging and discharging of pixel points and a panel of light-emitting materials. The DIC is directly related to the pixel points and refresh rate of the screen, and stable power supply to the DIC is the basis for stable display. The existing power supply method cannot adjust the power supply voltage input to the OLED display module when supplying power to the DIC in the OLED screen, resulting in low power supply efficiency and high power consumption. SUMMARY

[0003] The present disclosure aims to provide a voltage-stabilized power supply system of an OLED display module and an electronic device, thereby at least to some extent improving the power supply efficiency of power supply to the OLED display module and reducing power consumption.

[0004] According to a first aspect of the present disclosure, a voltage-stabilized power supply system of an OLED display module is provided, characterized in that it comprises: a power supply module comprising an output end and a feedback end; an OLED display module, an input end of which is connected to the output end of the power supply module through a line having impedance; a feedback module connected between the input end of the OLED display module and the feedback end; the power supply module is used to adjust the output end voltage of the power supply module according to the feedback module, so that the voltage of the input end of the OLED display module is within a first preset range.

[0005] According to a second aspect of the present disclosure, an electronic device is provided, characterized in that it comprises the voltage-stabilized power supply system of the OLED display module according to any one of the preceding claims.

[0006] The voltage stabilizing power supply system of the OLED display module provided by one embodiment of the present disclosure comprises a power supply module, a line impedance, an OLED display module and a feedback module, wherein the power supply module comprises an output end and a feedback end; the input end of the OLED display module is connected to the output end of the power supply module through a line with impedance; the feedback module is connected between the input end of the OLED display module and the feedback end; the power supply module is used to adjust the output end voltage of the power supply module according to the feedback module, so that the voltage of the input end of the OLED display module is within a first preset range. Compared with the prior art, the voltage of the input end of the OLED display module is fed back in real time by using the feedback module, when the voltage of the input end of the OLED display module changes due to current change, the power supply module adjusts the output end voltage thereof, so that the voltage of the input end of the OLED display module is within the first preset range, which ensures stable power supply of the OLED display module, and at the same time, the power supply module does not need to adjust the output end to maintain a continuous high voltage, thereby reducing power consumption and improving power supply efficiency.

[0007] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0008] The drawings incorporated into the specification and forming a part thereof, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings. In the drawings:

[0009] Figure 1 is a schematic diagram of an external power supply of an OLED display screen;

[0010] Figure 2 is a structural schematic diagram of an LDO converter;

[0011] Figure 3 is a structural schematic diagram of a voltage stabilizing power supply system of an OLED display module in the prior art;

[0012] Figure 4 is a structural diagram of a voltage stabilizing power supply system of an OLED display module in an exemplary embodiment of the present disclosure;

[0013] Figure 5 is a structural diagram of a power supply module in an exemplary embodiment of the present disclosure;

[0014] Figure 6 is a structural diagram of an OLED display module in an exemplary embodiment of the present disclosure;

[0015] Figure 7 FIG. 6 schematically illustrates a structure diagram of a voltage stabilizing power supply system of an OLED display module after a BTB connector is added in an exemplary embodiment of the present disclosure;

[0016] Figure 8 FIG. 7 schematically illustrates a structure diagram of a voltage stabilizing power supply system of another OLED display module in an exemplary embodiment of the present disclosure;

[0017] Figure 9 FIG. 8 schematically illustrates a structure diagram of a voltage stabilizing power supply system of still another OLED display module in an exemplary embodiment of the present disclosure;

[0018] Figure 10 FIG. 9 schematically illustrates a structure diagram of a voltage stabilizing power supply system of yet another OLED display module in an exemplary embodiment of the present disclosure;

[0019] Figure 11 FIG. 10 schematically illustrates a schematic diagram of an electronic device in an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0020] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations can be implemented in any

[0021] In addition, the accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and serve to explain the principles of the present disclosure. The same reference numbers in different drawings represent the same or similar elements.

[0022] Reference will now be made to Figure 1 As shown, the power supply path of a common OLED display screen is mainly composed of a DIC for controlling the charging and discharging of pixel points and a panel of light emitting materials. The DIC is directly related to the pixel points and refresh rate of the screen.

[0023] Reference will now be made to Figure 2As shown, the existing power supply mode is to provide VDDR voltage (about 1.8V) externally, enter the DIC through the motherboard end, the BTB connector and the screen FPC (Flexible Printed Circuit), and convert VDDR to DVDD (about 1.0V) for the DIC by the LDO (low dropout regulator) in the DIC. Through the LDO conversion, the power supply efficiency is only 55.6%, and the power supply efficiency is low.

[0024] Referring to Figure 3 As shown, the VDDR voltage in the prior art is fixed, and since the current fluctuation of the OLED display module is relatively large when working, the voltage input to the display module is unstable due to the voltage division of the line impedance Rz. Therefore, in order to ensure that the input voltage of the DIC meets the conditions, the VDDR voltage is usually set to be relatively high, otherwise when the DVDD voltage exceeds the required range of the DIC, it has a direct impact on the IC life or picture stability. Therefore, the existing VDDR power supply scheme has low power supply efficiency, and generates more power consumption loss when converting at a high VDDR voltage, which is not conducive to improving the whole machine endurance.

[0025] Based on the above problems, the present disclosure first provides an OLED display module voltage stabilization power supply system, referring to Figure 4 As shown, the OLED display module voltage stabilization power supply system includes a power supply module 410, an OLED display module 420 and a feedback module 430, wherein the power supply module 410 includes an output end and a feedback end; the input end A of the OLED display module 420 is connected to the output end B of the power supply module 410 through a line with impedance; the feedback module 430 is connected between the input end A of the OLED display module 420 and the feedback end FB; the power supply module 410 is used to adjust the output end B voltage of the power supply module 410 according to the feedback module 430, so that the voltage of the input end A of the OLED display module 420 is within a first preset range.

[0026] Compared with the prior art, the feedback module 430 is used to feedback the voltage of the input end of the OLED display module 420 in real time. When the voltage of the input end of the OLED display module 420 changes due to current change, the power supply module 410 adjusts the output end voltage to make the voltage of the input end A of the OLED display module 420 within the first preset range, thereby ensuring the stable power supply of the OLED display module 420, and without the need to adjust the output end of the power supply module 410 to maintain a high voltage, the power consumption is reduced and the power supply efficiency is improved.

[0027] In the example embodiment, the impedance on the line between the input A of the OLED display module 420 and the output B of the power supply module 410 can be equivalent to connecting a line impedance Rz between the input A and the output B of the power supply module 410, which can include all the impedance between the output B of the power supply module 410 and the input A of the OLED display module 420, such as the impedance of the wire, the impedance of the FPC, etc., which is not limited in the present application.

[0028] In an example embodiment of the present disclosure, referring to FIG. 4, Figure 5 The power supply module 410 can be a DC converter, which can include a power interface Vin connected to the total power supply VPH-PWR, a voltage regulation unit, an output B, and a feedback end FB, wherein the voltage regulation unit is configured to adjust the voltage VDDR at the output B according to the voltage at the feedback end FB.

[0029] In the example embodiment, the power supply module 410 can compare the voltage signal returned by the feedback module 430 with the second preset range, and when the feedback voltage signal is greater than the second preset range, the voltage VDDR at the output B is adjusted to decrease, and when the feedback voltage signal is less than the second preset range, the voltage VDDR at the output B is adjusted to increase. The power supply module 410 can be a DC-DC conversion circuit, or can be customized according to user needs, which is not limited in the example embodiment.

[0030] In an example embodiment of the present disclosure, referring to FIG. 4, Figure 6 The OLED display module 420 can include an LDO converter and a DIC module, wherein the LDO converter includes the input A of the OLED display module 420 and is connected to the DIC module, and the other end of the DIC module is grounded.

[0031] In an example embodiment of the present disclosure, referring to FIG. 4, Figure 7 The voltage-stabilized power supply system of the OLED display module 420 can further include a BTB connector connected between the input A of the OLED display module 420 and the output B of the power supply module 410. The BTB connector has strong corrosion resistance and superior environmental resistance, has the advantages of flexible connection, undertakes signal conversion function, and can make the connection more firm and reliable. In the example embodiment, the BTB connector is also connected between the feedback end FB of the power supply module 410 and the input A of the OLED display module 420.

[0032] During the operation of the OLED display module 420, different display contents will result in different currents. The larger the current, the larger the voltage across the aforementioned line impedance Rz. If the voltage signal at input terminal A needs to remain constant, the voltage at output terminal B needs to be adjusted. The voltage at output terminal B, VDDR = Va + I * Rz, where Va represents the voltage at point A, I represents the current in the line from point B to point A, and Rz represents the line impedance. For example, if the current increases, and the voltage at output terminal B remains unchanged, VDDR... a The voltage will decrease. At this time, the voltage signal at point A is fed back to the power supply module 410 through the feedback module 420. The power supply module 410 adjusts the voltage VDDR at the output terminal B to increase, so that the voltage signal V at the input terminal A is increased. a It remains within the first preset range. For example, if the current decreases, and the voltage at output terminal B remains unchanged, V... a The voltage at point A will increase. At this point, the voltage signal at point A is fed back to the power supply module 410 via the feedback module 420. The power supply module 410 adjusts the voltage VDDR at output terminal B to decrease, so that the voltage signal V at input terminal A... a Keep within the first preset range.

[0033] In one exemplary embodiment of this disclosure, reference is made to Figure 8 As shown, the feedback module 430 may include a first resistor R1 and a second resistor R2. The first end of the first resistor R1 is connected to the input terminal A of the OLED display module 420, and the second end is connected to the feedback terminal FB. The first end of the second resistor R2 is connected to the feedback terminal FB, and the second end is grounded.

[0034] After determining the first preset range, a second preset range corresponding to the first preset range of the feedback terminal FB can be determined based on the first preset range. Specifically, the second preset range can be calculated using the following formula: V a =V fb *(1+R1 / R2), where V a The voltage at point A is represented by V. fb This represents the voltage at the FB point, i.e., the voltage at the feedback point FB. After obtaining the first preset range, the second preset range can be calculated using the above formula and set within the power supply module 410.

[0035] When the OLED display module 420 is working, if the voltage at point A changes, the voltage at point FB will also change. If the voltage at point A is not within the first preset range, the voltage at point FB will also not be within the second preset range. At this time, the power supply module 410 adjusts the output voltage to make the obtained feedback voltage V... fb Within the second preset range, that is, to make the voltage V at point A above...a is in the first preset range.

[0036] In another example embodiment of the present disclosure, referring to Figure 9 The feedback module 430 includes a first double switch, a third resistor R3, and a fourth resistor R4, wherein the first double switch includes a first enable end IN1 and a second enable end IN2. The feedback module 430 is configured to, when the BTB connector is not connected, transmit the voltage signal of the output end B of the power supply module 410 to the feedback end FB through the third resistor R3 in response to the first enable end IN1 of the first double switch being connected to a high level, and ground the output end B of the power supply module 410 through the third resistor R3 and the fourth resistor R4 connected in series with the third resistor R3. The feedback module 430 is also configured to, when the BTB connector is connected, transmit the voltage signal of the input end A of the OLED display module 420 to the feedback end FB through the third resistor R3 in response to the second enable end IN2 of the first double switch being connected to a high level, and ground the input end A of the OLED display module 420 through the third resistor R3 and the fourth resistor R4 connected in series with the third resistor R3.

[0037] Specifically, when the BTB connector is not connected, the voltage at the point B can be transmitted to the feedback end FB through the third resistor R3, and the output end B of the power supply module 410 is grounded through the third resistor R3 and the fourth resistor R4 connected in series with the third resistor R3, so that the power supply module 410 can complete feedback and will not always output at the maximum voltage, avoiding the problem of increased loss or even damage to the OLED display module 420 due to the BTB connector not being connected. At this time, V b1 = V fb *(1+R3 / R4), where V b1 represents the voltage at point B, and V fb represents the voltage at the FB point, i.e., the feedback point voltage. In this example embodiment, the second preset range has been defined, so the voltage at point B will also be adjusted to the first preset range.

[0038] When the BTB connector is connected, the OLED display module 420 works normally, the voltage signal of the input end A of the OLED display module 420 can be transmitted to the feedback end FB through the third resistor R3, and the input end A of the OLED display module 420 is grounded through the third resistor R3 and the fourth resistor R4 connected in series with the third resistor R3, which can ensure that the voltage at the input end of the OLED display module 420 remains within the first preset range. At this time, V a = V fb *(1+R3 / R4), where V a represents the voltage at point A, and V fb represents the voltage at the FB point.

[0039] In the present example embodiment, referring to Figure 9 The feedback module 430 can further include a fifth resistor R5, a sixth resistor R6, and a first transistor T1. The first double switch further includes a first input terminal NO1, a second input terminal NO2, a first output terminal COM1, a second output terminal COM2, a power supply terminal VCC, and a ground terminal. A first end of the third resistor R3 is connected to the second output terminal COM2, and a second end is connected to the feedback terminal FB. A first end of the fourth resistor R4 is connected to the feedback terminal FB, and a second end is grounded. A first end of the fifth resistor R5 is connected to the second input terminal NO2, and a second end is grounded. A first end of the sixth resistor R6 is connected to the power supply terminal VCC, and a second end is connected to the first enable terminal IN1. The first transistor T1 is configured to ground the second end of the sixth resistor R6 in response to the input terminal A of the OLED display module 420 being at a high level. The power supply terminal VCC of the first double switch is connected to the total power supply VPH-PWR. The first input terminal NO1 of the first double switch is connected to the output terminal B of the power supply module 410. The second enable terminal IN2 of the first double switch is connected to the input terminal A of the OLED display module 420. The second input terminal NO2 of the first double switch is connected to the input terminal A of the OLED display module 420. The first input terminal NO1 of the first double switch is turned on with the first output terminal COM1 in response to the first enable terminal IN1 being at a high level. The second input terminal NO2 of the first double switch is turned on with the second output terminal COM2 in response to the second enable terminal IN2 being at a high level.

[0040] The first transistor T1 has an enable terminal, a first terminal, and a second terminal. Specifically, the enable terminal of each switching transistor can be a gate, the first terminal can be a source, and the second terminal can be a drain. Alternatively, the enable terminal of each switching transistor can be a gate, the first terminal can be a drain, and the second terminal can be a source. In addition, the first transistor T1 can be an enhancement-mode transistor or a depletion-mode transistor, which is not particularly limited in the present example embodiment. In addition, the first transistor T1 can be an N-type transistor or a P-type transistor, which is not particularly limited in the present example embodiment.

[0041] In the present example embodiment, when the BTB connector is connected, the enable terminal of the first transistor T1 is at a high level, the first enable terminal IN1 of the first double switch is grounded, the second enable terminal IN2 of the first double switch is connected to the input terminal A of the OLED display module 420, the second input terminal NO2 is turned on with the second output terminal COM2, the voltage signal of the input terminal A of the OLED display module 420 can be transmitted to the feedback terminal FB through the third resistor R3, and the input terminal A of the OLED display module 420 is grounded through the third resistor R3 and the fourth resistor R4 connected in series with the third resistor R3.

[0042] When the BTB connector is not connected, the first enable terminal IN1 of the first dual-control switch is connected to a high level, and the first input terminal NO1 and the first output terminal COM1 are connected. This enables the voltage signal of the output terminal B of the power supply module 410 to be transmitted to the feedback terminal FB through the third resistor R3, and the output terminal B of the power supply module 410 to be grounded through the third resistor R3 and the fourth resistor R4 connected in series with the third resistor R3.

[0043] The feedback module adopts the above structure to avoid the problem of increased loss or even damage to the OLED display module 420 due to the BTB connector not being connected. At the same time, when the BTB connector is working normally, it can feed back the voltage at point A to the power supply module 410 to achieve the purpose of controlling the voltage at the input terminal A of the OLED display module within the first preset range.

[0044] In yet another exemplary embodiment of this disclosure, reference is made to... Figure 10 As shown, the feedback module 430 includes a second dual-channel switch, a seventh resistor R7, an eighth resistor R8, and a ninth resistor R9. When the BTB connector is not connected, the feedback module 430 responds by connecting the first enable terminal IN1 of the second dual-channel switch to a high level, transmitting the voltage signal of the output terminal B of the power supply module 410 to the feedback terminal FB through the seventh resistor R7, and grounding the output terminal B of the power supply module 410 through the seventh resistor R7 and the eighth resistor R8 connected in series with the seventh resistor R7. When the BTB connector is connected, the feedback module 430 responds by connecting the second enable terminal IN2 of the second dual-channel switch to a high level, transmitting the voltage signal of the input terminal A of the OLED display module 420 to the feedback terminal FB through the ninth resistor R9, and grounding the input terminal A of the OLED display module 420 through the ninth resistor R9 and the eighth resistor R8 connected in series with the ninth resistor R9.

[0045] Specifically, when the BTB connector is not connected, the voltage at point B can be transmitted to the feedback terminal FB via the seventh resistor R7, and the output terminal B of the power supply module 410 is grounded via the seventh resistor R7 and the eighth resistor R8 connected in series with the seventh resistor R7. This allows the power supply module 410 to complete feedback and prevents it from continuously outputting the maximum voltage, thus avoiding increased losses or even damage to the OLED display module 420 caused by the BTB connector not being connected. At this time, V b2 =V fb *(1+R7 / R8), where V b2 The voltage at point B, V fb This represents the voltage at point FB.

[0046] When the BTB connector is connected, the OLED display module 420 works normally, and the voltage signal of the input end A of the OLED display module 420 can be transmitted to the feedback end FB through the ninth resistor R9, and the input end A of the OLED display module 420 is grounded through the ninth resistor R9 and the eighth resistor R8 connected in series with the ninth resistor R9, so that the voltage of the input end of the OLED display module 420 can be kept in the first preset range. At this time, V a = V fb *(1+R9 / R8), wherein V a represents the voltage of point A, V fb represents the set voltage of point FB.

[0047] In the example embodiment, R7 can be greater than R9, so that after the second preset range is determined, the voltage of point B is greater than the voltage of point A, that is, the voltage of point B is greater than the first preset range, so that the voltage of point A satisfies the normal working of the OLED display module 420. That is, when the second preset range is fixed, the feedback module adopts the above structure, and the power supply module can ensure that the voltage of point B is greater than the first preset range when the BTB connector is not connected, so that after the voltage is divided by the line impedance Rz, the voltage transmitted to the OLED display module 420 can also ensure that the DIC in the OLED display module 420 works normally.

[0048] In the example embodiment, with reference to Figure 10As shown, the feedback module 430 further comprises a tenth resistor R10, an eleventh resistor R11 and a second transistor T2; the second double switch further comprises a first input terminal NO1, a second input terminal NO2, a first output terminal COM1, a second output terminal COM2, a power supply terminal VCC and a ground terminal. A first terminal of the seventh resistor R7 is connected to the output terminal B of the power supply module 410, and a second terminal thereof is connected to the first input terminal NO1; a first terminal of the eighth resistor R8 is connected to the feedback terminal FB, and a second terminal thereof is grounded; a first terminal of the ninth resistor R9 is connected to the second input terminal NO2, and a second terminal thereof is connected to the first enable terminal IN1; a first terminal of the tenth resistor R10 is connected to the second enable terminal IN2, and a second terminal thereof is grounded; a first terminal of the eleventh resistor R11 is connected to the power supply terminal VCC, and a second terminal thereof is connected to the first enable terminal IN1; the second transistor T2 is configured to ground the second terminal of the sixth resistor R6 in response to the input terminal A of the OLED display module 420 being at a high level. The power supply terminal VCC of the second double switch is connected to the total power supply VPH-PWR, the first input terminal NO1 is connected to the output terminal B of the power supply module 410, the second enable terminal IN2 is connected to the input terminal A of the OLED display module 420, and the second input terminal NO2 is connected to the input terminal A of the OLED display module 420; the second double switch is configured to turn on the first input terminal NO1 and the first output terminal COM1 in response to the first enable terminal IN1 being at a high level; and the second double switch is configured to turn on the second input terminal NO2 and the second output terminal COM2 in response to the second enable terminal IN2 being at a high level.

[0049] The second transistor T2 has an enable terminal, a first terminal and a second terminal. Specifically, the enable terminal of each switch transistor can be a gate, the first terminal can be a source, and the second terminal can be a drain; or the enable terminal of each switch transistor can be a gate, the first terminal can be a drain, and the second terminal can be a source. In addition, the second transistor T2 can be an enhancement-mode transistor or a depletion-mode transistor, and the present exemplary embodiment does not make special limitations thereon. In addition, the second transistor T2 can be an N-type transistor or a P-type transistor, and the present exemplary embodiment does not make special limitations thereon.

[0050] In the present exemplary embodiment, when the above-described BTB connector is connected, the enable terminal of the second transistor T2 is at a high level, the first enable terminal IN1 of the second double switch is grounded, the second enable terminal IN2 of the second double switch is connected to the input terminal A of the OLED display module 420, the second input terminal NO2 is turned on with the second output terminal COM2, the voltage signal of the input terminal A of the OLED display module 420 can be transmitted to the feedback terminal FB through the ninth resistor R9, and the input terminal A of the OLED display module 420 is grounded through the ninth resistor R9 and the eighth resistor R8 connected in series with the ninth resistor, so as to ensure that the voltage of the input terminal of the OLED display module 420 is maintained within a first preset range.

[0051] When the BTB connector is not connected, the first enable end IN1 of the second double control switch is connected to high level, the first input end NO1 and the first output end COM1 are turned on, the output end B of the power supply module 410 is connected to the ground through the seventh resistor R7 and the eighth resistor R8, so that the power supply module 410 can complete feedback and will not always output at the maximum voltage, thereby avoiding the problem of increased loss or even damage to the OLED display module 420 due to the unconnected BTB connector.

[0052] In summary, in the example embodiment, compared with the prior art, the voltage at the input end of the OLED display module 420 is fed back in real time by the feedback module 430, when the voltage at the input end of the OLED display module 420 changes due to current changes, the output voltage of the power supply module 410 is adjusted to keep the voltage at the input end A of the OLED display module 420 within the first preset range, thereby ensuring stable power supply for the OLED display module 420, and at the same time, the power supply module 410 does not need to adjust its output to maintain a high voltage, thereby reducing power consumption and improving power supply efficiency. Further, when the BTB connector is not connected, the voltage signal of the output end B of the power supply module 410 is transmitted to the feedback end FB through the third resistor R3 in response to the first enable end IN1 of the first double control switch being connected to high level, and the output end B of the power supply module 410 is connected to the ground through the third resistor R3 and the fourth resistor R4 connected in series with the third resistor R3; when the BTB connector is connected, the voltage signal of the input end A of the OLED display module 420 is transmitted to the feedback end FB through the third resistor R3 in response to the second enable end IN2 of the first double control switch being connected to high level, and the input end A of the OLED display module 420 is connected to the ground through the third resistor R3 and the fourth resistor R4 connected in series with the third resistor R3, thereby avoiding the problem of increased loss or even damage to the OLED display module 420 due to the unconnected BTB connector,

[0053] Further, by connecting the voltage signal of the output end B of the power supply module 410 to the feedback end FB through the seventh resistor R7 and grounding the output end B of the power supply module 410 through the seventh resistor R7 and the eighth resistor R8 connected in series with the seventh resistor R7 in response to the first enable end IN1 of the second double-way switch connecting high level when the BTB connector is not connected, and connecting the voltage signal of the input end A of the OLED display module 420 to the feedback end FB through the ninth resistor R9 and grounding the input end A of the OLED display module 420 through the ninth resistor R9 and the eighth resistor R8 connected in series with the ninth resistor R9 in response to the second enable end IN2 of the second double-way switch connecting high level when the BTB connector is connected, the problem of the OLED display module 420 being damaged or the power consumption being increased due to the BTB connector not being connected is avoided, and the seventh resistor R7 is set to be greater than the ninth resistor R9, so that the voltage at the point B is greater than the voltage at the point A, so that the voltage at the point A meets the normal working requirement of the OLED display module 420.

[0054] The present disclosure also provides an electronic device comprising the above-mentioned voltage-stabilized power supply system of the OLED display module 420, and the specific details of the voltage-stabilized power supply system of the OLED display module 420 have been described above and will not be repeated here.

[0055] The structure of the electronic device will be described below by taking the mobile terminal 1100 in Figure 11 as an example. Those skilled in the art should understand that, in addition to the components specially used for mobile purposes, Figure 11 the structure in can also be applied to devices of fixed type.

[0056] Figure 11As shown, the mobile terminal 1100 can specifically include a processor 1101, a memory 1102, a bus 1103, a mobile communication module 1104, an antenna 1, a wireless communication module 1105, an antenna 2, a display screen 1106, a camera module 1107, an audio module 1108, a power module 1109, and a sensor module 1110. The processor 1101 can be connected with the memory 1102 or other components through the bus 1103. The memory 1102 can be used to store computer executable program codes, which include instructions. The processor 1101 executes various functional applications and data processing of the mobile terminal 1100 by running the instructions stored in the memory 1102. The memory 1102 can also store application data, such as storing image, video and the like files. The display screen 1106 is used to realize display functions, such as displaying user interfaces, images, videos and the like. The camera module 1107 is used to realize shooting functions, such as shooting images, videos and the like. The audio module 1108 is used to realize audio functions, such as playing audio, collecting voice and the like. The power module 1109 is used to realize power management functions, such as charging the battery, powering the device, monitoring the battery state and the like. The sensor module 1110 can include a depth sensor 11101, a pressure sensor 11102, a gyroscope sensor 11103, an air pressure sensor 11104 and the like, to realize corresponding sensing detection functions.

[0057] Those skilled in the art can understand that the various aspects of the present disclosure can be implemented as a system, a method or a program product. Therefore, the various aspects of the present disclosure can be embodied as a whole hardware implementation, a whole software implementation (including firmware, microcode, etc.), or an implementation combined with hardware and software aspects, which can be collectively referred to as "circuitry", "module" or "system" herein.

[0058] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses or adaptations of the present disclosure that follow, in general, the principles of the present disclosure and include such features that are within the general purview of the present disclosure, as well as those that are presently unforeseeable.

[0059] It should be understood that the present disclosure is not limited to the precise structures described and shown in the accompanying drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is defined only by the appended claims.

Claims

1. A voltage-stabilized power supply system for an OLED display module, characterized by The application relates to a stable voltage supply system for an OLED display module. The stable voltage supply system comprises: a power supply module, comprising an output end and a feedback end; an OLED display module, with an input end connected to the output end of the power supply module through a line with impedance; a feedback module, connected between the input end of the OLED display module and the feedback end, for providing a voltage signal to the power supply module; the power supply module is used for adjusting the output end voltage of the power supply module according to the voltage signal, so that the voltage of the input end of the OLED display module is within a first preset range; the stable voltage supply system further comprises a BTB connector, which is connected between the input end and the feedback end of the OLED display module; the feedback module comprises a first double switch, a third resistor and a fourth resistor; when the BTB connector is not connected, the feedback module is used for transmitting the voltage signal of the output end of the power supply module to the feedback end through the third resistor in response to the first enable end of the first double switch being connected to a high level, and making the output end of the power supply module connect to ground through the third resistor and the fourth resistor; when the BTB connector is connected, the feedback module is used for transmitting the voltage signal of the input end of the OLED display module to the feedback end through the third resistor in response to the second enable end of the first double switch being connected to a high level, and making the input end of the OLED display module connect to ground through the third resistor and the fourth resistor. Alternatively, 2. The voltage stabilizing power supply system of the OLED display module according to claim 1, wherein, the feedback module comprises a second double switch, a seventh resistor, an eighth resistor and a ninth resistor; when the BTB connector is not connected, the feedback module is used for transmitting the voltage signal of the output end of the power supply module to the feedback end through the seventh resistor in response to the first enable end of the second double switch being connected to a high level, and making the output end of the power supply module connect to ground through the seventh resistor and the eighth resistor connected in series with the seventh resistor; when the BTB connector is connected, the feedback module is used for transmitting the voltage signal of the input end of the OLED display module to the feedback end through the ninth resistor in response to the second enable end of the second double switch being connected to a high level, and making the input end of the OLED display module connect to ground through the ninth resistor and the eighth resistor.

3. The voltage stabilizing power supply system of the OLED display module according to claim 1, wherein, A first end of the third resistor is connected to the feedback module, and a second end of the third resistor is connected to the feedback end; a first end of the fourth resistor is connected to the feedback end, and a second end of the fourth resistor is connected to ground. The feedback module further comprises a fifth resistor, a sixth resistor and a first transistor, and the first double switch further comprises a first input end, a second input end, a first output end, a second output end, a power supply end and a ground end; wherein a first end of the third resistor is connected to the second output end; a first end of the fifth resistor is connected to the second input end, and a second end of the fifth resistor is connected to ground; a first end of the sixth resistor is connected to the power supply end, and a second end of the sixth resistor is connected to the first enable end; the first transistor is used for connecting the second end of the sixth resistor to ground in response to the input end of the OLED display module being a high level. The first double-way switch has a power supply end, a first input end, a second input end, a first output end, a second output end, a first enable end and a second enable end. The first double-way switch is turned on between the first input end and the first output end when the first enable end is high. The first double-way switch is turned on between the second input end and the second output end when the second enable end is high.

4. The voltage stabilizing power supply system of the OLED display module according to claim 3, wherein, The first transistor has an enable end, a first end and a second end, the enable end is connected to the input end of the OLED display module, the first end is connected to the first enable end of the first double-way switch, and the second end is grounded.

5. The voltage stabilizing power supply system of the OLED display module according to claim 1, wherein, The first end of the seventh resistor is connected to the output end of the power supply module, and the second end is connected to the feedback module; the first end of the eighth resistor is connected to the feedback end, and the second end is grounded; the first end of the ninth resistor is connected to the input end of the OLED display module, and the second end is connected to the feedback module.

6. The voltage stabilizing power supply system of the OLED display module according to claim 5, wherein, The feedback module further comprises a tenth resistor, an eleventh resistor and a second transistor. The second double-way switch further comprises a first input end, a second input end, a first output end, a second output end, a power supply end and a ground end. The second end of the seventh resistor is connected to the first input end; the first end of the ninth resistor is connected to the second input end, and the second end is connected to the first enable end; the first end of the tenth resistor is connected to the second enable end, and the second end is grounded; the first end of the eleventh resistor is connected to the power supply end, and the second end is connected to the first enable end. The second transistor is used to ground the second end of the eleventh resistor when the input end of the OLED display module is high. The second double-way switch has a power supply end, a first input end, a second input end, a first output end, a second output end, a first enable end and a second enable end. The second double-way switch is turned on between the first input end and the first output end when the first enable end is high. The second double-way switch is turned on between the second input end and the second output end when the second enable end is high.

7. The voltage stabilizing power supply system of the OLED display module according to claim 6, wherein, The second transistor has an enable end, a first end and a second end, the enable end is connected to the input end of the OLED display module, the first end is connected to the first enable end of the second double-way switch, and the second end is grounded.

8. The voltage stabilizing power supply system of the OLED display module according to claim 1, wherein, The power supply module is used to adjust the output end voltage of the power supply module according to the comparison between the voltage signal returned by the feedback module and the second preset range, so that the voltage of the input end of the OLED display module is within the first preset range. The second preset range is calculated based on the first preset range.

9. The regulated power supply system of claim 8, wherein, The power supply module comprises: The direct current converter comprises a power supply interface, a voltage regulating unit, an output end of the power supply module and a feedback end, wherein the power supply interface is connected to a total power supply; The voltage regulating unit is used to adjust the voltage of the output end when the voltage signal of the feedback end is not within the second preset range, so that the voltage of the feedback end is within the second preset range, thereby making the voltage of the input end of the OLED display module within the first preset range.

10. An electronic device, comprising: The direct current converter comprises a power supply interface, a voltage regulating unit, an output end of the power supply module and a feedback end, wherein the power supply interface is connected to a total power supply; The voltage regulating unit is used to adjust the voltage of the output end when the voltage signal of the feedback end is not within the second preset range, so that the voltage of the feedback end is within the second preset range, thereby making the voltage of the input end of the OLED display module within the first preset range. The direct current converter comprises a power supply interface, a voltage regulating unit, an output end of the power supply module and a feedback end, wherein the power supply interface is connected to a total power supply; The voltage regulating unit is used to adjust the voltage of the output end when the voltage signal of the feedback end is not within the second preset range, so that the voltage of the feedback end is within the second preset range, thereby making the voltage of the input end of the OLED display module within the first preset range. The direct current converter comprises a power supply interface

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