Display device and electronic apparatus

Abstract

The invention discloses a display device and electronic equipment, and the display device comprises a time schedule controller and a power management circuit, and outputs a plurality of target enable signals through the time schedule controller. The power management circuit is configured to control whether a voltage output channel corresponding to a target enable signal outputs a corresponding voltage value or not according to the target enable signal, so that independent control of whether each voltage output channel outputs the voltage value or not can be realized; compared with a mode of controlling the opening or closing of a plurality of voltage output channels by one target enable signal, the power supply time sequence can be flexibly and conveniently adjusted.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display device and an electronic device. Background Art

[0002] In display technology, a power management circuit usually needs to provide corresponding voltage values ​​for different loads.

[0003] However, the power management circuit supplies power to each load at the same time, which leads to a negative situation in the system. Summary of the invention

[0004] The present application provides a display device and an electronic device to alleviate the technical problem that it is difficult to flexibly control the power supply timing independently.

[0005] In a first aspect, the present application provides a display device, which includes a timing controller and a power management circuit, the timing controller being configured to output multiple target enable signals; the power management circuit is connected to the timing controller, the power management circuit including multiple voltage output channels, each voltage output channel having a preset voltage value, and the power management circuit being configured to control, according to a target enable signal, whether a voltage output channel corresponding to the target enable signal outputs a corresponding voltage value.

[0006] In a second aspect, the present application provides an electronic device, which includes the above-mentioned display device.

[0007] The display device and electronic device provided in the present application output multiple target enable signals through a timing controller, and the power management circuit is configured to control whether a voltage output channel corresponding to the target enable signal outputs a corresponding voltage value according to a target enable signal, so as to achieve separate control of whether each voltage output channel outputs a voltage value. Compared with one target enable signal controlling the opening or closing of multiple voltage output channels, the power supply timing can be adjusted flexibly and conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0009] Figure 1 A first structural schematic diagram of a display device provided in an embodiment of the present application.

[0010] Figure 2 A first structural schematic diagram of a voltage output channel provided in an embodiment of the present application.

[0011] Figure 3 A second structural schematic diagram of the voltage output channel provided in an embodiment of the present application.

[0012] Figure 4 A second structural schematic diagram of the display device provided in an embodiment of the present application.

[0013] Figure 5 A third structural schematic diagram of the display device provided in an embodiment of the present application.

[0014] Figure 6 A fourth structural schematic diagram of the display device provided in an embodiment of the present application.

[0015] Figure 7 A fifth structural schematic diagram of the display device provided in an embodiment of the present application.

[0016] Figure 8 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0018] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features specified as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0019] The power management circuit in the related art usually binds the control switches of multiple voltage output channels to a target enable signal, that is, one target enable signal controls multiple voltage output channels to be turned on or off at the same time. This method makes it difficult to flexibly adjust the power supply timing according to the needs of different loads when the power management circuit supplies power to multiple loads at the same time, and the system design lacks flexibility; secondly, for different loads that require the same voltage value, it is also impossible to dynamically adjust the power supply status of each load according to the working status of different loads, resulting in unnecessary power consumption.

[0020] See also Figures 1 to 8 , this embodiment provides a display device 100, such as Figure 1As shown, the display device 100 includes a timing controller 10 and a power management circuit 20, the timing controller 10 is configured to output multiple target enable signals EN; the power management circuit 20 is connected to the timing controller 10, the power management circuit 20 includes multiple voltage output channels 21, each voltage output channel 21 has a preset voltage value, and the power management circuit 20 is configured to control a voltage output channel 21 corresponding to a target enable signal EN according to whether the target enable signal EN outputs a corresponding voltage value.

[0021] It can be understood that the display device 100 provided in this embodiment outputs multiple target enable signals EN through the timing controller 10, and the power management circuit 20 is configured to control whether a voltage output channel 21 corresponding to the target enable signal EN outputs the corresponding voltage value according to a target enable signal EN, so as to achieve separate control of whether each voltage output channel 21 outputs a voltage value. Compared with one target enable signal EN controlling the opening or closing of multiple voltage output channels 21, the power supply timing can be adjusted flexibly and conveniently.

[0022] It should be noted that the power management circuit 20 may be a power management chip (PMIC).

[0023] In some embodiments, such as Figure 2 As shown, each voltage output channel 21 includes a channel input part 211, an enable switch K1 and a channel output part 212. The control end of each enable switch K1 is connected to a target enable signal EN, and the enable switch K1 is configured to control the connection state between the channel input part 211 and the channel output part 212.

[0024] It should be noted that the enable switch K1 can be a MOS tube or a triode. Exemplarily, when the target enable signal EN is at a high level, the enable switch K1 is turned on; when the target enable signal EN is at a low level, the enable switch K1 is turned off. Alternatively, when the target enable signal EN is at a low level, the enable switch K1 is turned on; when the target enable signal EN is at a high level, the enable switch K1 is turned off.

[0025] The channel input portion 211 and the channel output portion 212 may both be conductors or connecting wires.

[0026] In some embodiments, such as Figure 3 As shown, the voltage output channel 21 also includes multiple soft start modules 213, each soft start module 213 is connected to the control end of an enable switch K1, and each soft start module 213 is configured to limit the current value of the voltage output channel 21 corresponding to the target enable signal EN according to a target enable signal EN.

[0027] It should be noted that the soft start module 213 is a soft start circuit, which is used to control the slow opening of the enabling switch K1 to avoid the impact of instantaneous large current.

[0028] In some embodiments, such as Figure 4 As shown, multiple target enable signals EN include a first enable signal EN1 and a second enable signal EN2; multiple voltage output channels 21 include a first output channel 221 and a second output channel 222 connected to the timing controller 10, the first output channel 221 is configured to output a first voltage value according to whether the first enable signal EN1, and the second output channel 222 is configured to output a second voltage value according to whether the second enable signal EN2, and the first voltage value is not equal to the second voltage value.

[0029] It should be noted that the first voltage value can be exemplarily 0.9V, and the second voltage value can be exemplarily 1.8V, which can meet the power supply requirements of the timing controller 10, and the supply time of the first voltage value and the second voltage value can be separately controlled by the first enable signal EN1 and the second enable signal EN2 to adapt to the power supply timing.

[0030] In some embodiments, such as Figure 5 As shown, the display device 100 also includes a level converter 30; the multiple target enable signals EN also include a third enable signal EN3, a fourth enable signal EN4 and a fifth enable signal EN5; the multiple voltage output channels 21 also include a third output channel 223, a fourth output channel 224 and a fifth output channel 225 connected to the level converter 30, the third output channel 223 is configured to output a third voltage value according to whether the third enable signal EN3 is enabled, the fourth output channel 224 is configured to output a fourth voltage value according to whether the fourth enable signal EN4 is enabled, the fifth output channel 225 is configured to output a fifth voltage value according to whether the fifth enable signal EN5 is enabled, and the third voltage value, the fourth voltage value and the fifth voltage value are not equal.

[0031] It should be noted that the third voltage value can be exemplarily 3.3V, the fourth voltage value (VGL) can be exemplarily -9.3V, and the fifth voltage value (VGH) can be exemplarily 7.5V, and VGH and VGL can be used as reference voltages of the clock signal. The third voltage value, the fourth voltage value, and the fifth voltage value can be output in sequence, and when the level converter 30 receives the valid enable signal output by the timing controller 10, the level converter 30 outputs the corresponding clock signal.

[0032] In some embodiments, such as Figure 6As shown, the display device 100 also includes a temperature sensor 40, a source driver 50 and a flash memory 60; the multiple target enable signals EN also include a sixth enable signal EN6, a seventh enable signal EN7 and an eighth enable signal EN8; the multiple voltage output channels 21 also include a sixth output channel 226 connected to the temperature sensor 40, a seventh output channel 227 connected to the source driver 50 and an eighth output channel 228 connected to the flash memory 60, the sixth output channel 226 is configured to output a sixth voltage value according to whether the sixth enable signal EN6 is enabled, the seventh output channel 227 is configured to output a seventh voltage value according to whether the seventh enable signal EN7 is enabled, the eighth output channel 228 is configured to output an eighth voltage value according to whether the eighth enable signal EN8 is enabled, and the sixth voltage value, the seventh voltage value and the eighth voltage value are all equal.

[0033] It should be noted that the sixth voltage value, the seventh voltage value and the eighth voltage value are exemplarily all 1.8 V. In this embodiment, the same voltage value is also controlled by an enable signal to be output, which is conducive to flexibly and conveniently adjusting the power supply timing.

[0034] In some embodiments, such as Figure 7 As shown, the display device 100 also includes a display panel 70; the multiple target enable signals EN also include a ninth enable signal EN9, a tenth enable signal EN10, an eleventh enable signal EN11 and a twelfth enable signal EN12; the multiple voltage output channels 21 also include a ninth output channel 229, a tenth output channel 2210, an eleventh output channel 2211 and a twelfth output channel 2212 connected to the display panel 70, the ninth output channel 229 is configured to output a ninth voltage value according to whether the ninth enable signal EN9 is enabled, the tenth output channel 2210 is configured to output a tenth voltage value according to whether the tenth enable signal EN10 is enabled, the eleventh output channel 2211 is configured to output an eleventh voltage value according to whether the eleventh enable signal EN11 is enabled, and the twelfth output channel 2212 is configured to output a twelfth voltage value according to whether the twelfth enable signal EN12 is enabled, and the ninth voltage value, the tenth voltage value, the eleventh voltage value and the twelfth voltage value are not equal to each other.

[0035] It should be noted that the ninth voltage value may be 4.6 V, the tenth voltage value may be -6.8 V, the eleventh voltage value may be -5.8 V, and the twelfth voltage value may be -3.5 V. These voltage values ​​may provide power and initialization levels for the pixel circuit.

[0036] In some embodiments, such as Figure 7As shown, the timing controller 10 includes a storage module 11 storing a power-on timing sequence, and the timing controller 10 also adjusts the level states of multiple target enable signals EN according to the power-on timing sequence.

[0037] It should be noted that when the power supply network of the voltage value is complex, the power-on timing of the voltage value of the same load and / or different loads needs to be considered, which makes the design quite complicated and easily causes errors in the power-on timing design, resulting in circuit damage in the chip or panel. This embodiment adjusts the level states of multiple target enable signals EN according to the power-on timing, so that the opening or closing of each voltage output channel 21 can be controlled separately, and the power-on timing of the power supply can be conveniently controlled, thereby reducing the design difficulty and increasing the flexibility of the system.

[0038] In some of the embodiments, the timing controller 10 is configured to monitor the working status of a plurality of loads, and adjust the level states of a plurality of target enable signals EN according to the working status to control the connection states of a plurality of voltage output channels 21 .

[0039] It should be noted that the multiple loads may be at least two of the timing controller 10, the level converter 30, the temperature sensor 40, the source driver 50, the flash memory 60, and the display panel 70. In this embodiment, the real-time working status of different loads is fed back to the timing controller 10, and then the timing controller 10 outputs corresponding enable signals to the power management circuit 20 according to the working status of different loads to control the output of the corresponding voltage value, thereby controlling the power supply of different loads in real time. For example, when the load does not need to work, a low-level target enable signal EN can be set to disconnect the corresponding enable switch K1, thereby stopping the power supply to the load that does not need to work, which can effectively reduce the power consumption of the system.

[0040] In some embodiments, this embodiment provides an electronic device 200, such as Figure 8 As shown, the electronic device 200 includes the above-mentioned display device 100.

[0041] It can be understood that since the electronic device 200 provided in this embodiment includes the above-mentioned display device 100, it can also output multiple target enable signals EN through the timing controller 10. The power management circuit 20 is configured to control whether a voltage output channel 21 corresponding to the target enable signal EN outputs the corresponding voltage value according to a target enable signal EN, and can achieve separate control of whether each voltage output channel 21 outputs a voltage value. Compared with one target enable signal EN controlling the opening or closing of multiple voltage output channels 21, the power supply timing can be adjusted flexibly and conveniently.

[0042] Exemplarily, the electronic device 200 may be a smart phone, a tablet computer, a laptop computer, a smart watch, an e-reader, a television, a game console, a car dashboard, a head-up display (HUD), a computer monitor, an advertising screen, a medical imaging device, a surgical display, an industrial control device, a virtual reality (VR) device, an augmented reality (AR) device, a fitness tracker, smart glasses, etc.

[0043] The display device 100 may be, but is not limited to, a liquid crystal display screen, and may also be an active light-emitting display screen, such as an organic light-emitting diode display screen, a mini light-emitting diode display screen, a micro light-emitting diode display screen, a quantum dot light-emitting diode display screen, etc.

[0044] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0045] The display device 100 and the electronic device 200 provided in the embodiments of the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display device, characterized in that: The display device shown comprises: a timing controller configured to output a plurality of target enable signals; A power management circuit, wherein the power management circuit is connected to the timing controller, the power management circuit comprises a plurality of voltage output channels, each of the voltage output channels has a preset voltage value, and the power management circuit is configured to control, according to the target enable signal, whether the voltage output channel corresponding to the target enable signal outputs the corresponding voltage value.

2. The display device according to claim 1, characterized in that Each of the voltage output channels includes a channel input, an enable switch and a channel output. The control end of each of the enable switches is connected to a target enable signal. The enable switch is configured to control the connection state between the channel input and the channel output.

3. The display device according to claim 2, characterized in that: The voltage output channel also includes multiple soft start modules, each of which is connected to the control end of an enable switch, and each of which is configured to limit the current value of the voltage output channel corresponding to the target enable signal according to the target enable signal.

4. The display device according to claim 1, characterized in that The plurality of target enable signals include a first enable signal and a second enable signal; The multiple voltage output channels include a first output channel and a second output channel connected to the timing controller, the first output channel is configured to output a first voltage value according to whether the first enable signal is enabled, and the second output channel is configured to output a second voltage value according to whether the second enable signal is enabled, and the first voltage value is not equal to the second voltage value.

5. The display device according to claim 4, characterized in that: The display device further includes a level converter; The plurality of target enable signals further include a third enable signal, a fourth enable signal and a fifth enable signal; The multiple voltage output channels also include a third output channel, a fourth output channel and a fifth output channel connected to the level converter, the third output channel is configured to output a third voltage value according to whether the third enable signal is enabled, the fourth output channel is configured to output a fourth voltage value according to whether the fourth enable signal is enabled, and the fifth output channel is configured to output a fifth voltage value according to whether the fifth enable signal is enabled, and the third voltage value, the fourth voltage value and the fifth voltage value are not equal to each other.

6. The display device according to claim 5, characterized in that: The display device also includes a temperature sensor, a source driver and a flash memory; The plurality of target enable signals further include a sixth enable signal, a seventh enable signal and an eighth enable signal; The multiple voltage output channels also include a sixth output channel connected to the temperature sensor, a seventh output channel connected to the source driver, and an eighth output channel connected to the flash memory, the sixth output channel is configured to output a sixth voltage value according to whether the sixth enable signal, the seventh output channel is configured to output a seventh voltage value according to whether the seventh enable signal, and the eighth output channel is configured to output an eighth voltage value according to whether the eighth enable signal, and the sixth voltage value, the seventh voltage value, and the eighth voltage value are all equal.

7. The display device according to claim 6, characterized in that: The display device also includes a display panel; The plurality of target enable signals further include a ninth enable signal, a tenth enable signal, an eleventh enable signal and a twelfth enable signal; The multiple voltage output channels also include a ninth output channel, a tenth output channel, an eleventh output channel and a twelfth output channel connected to the display panel, the ninth output channel is configured to output a ninth voltage value according to whether the ninth enable signal is enabled, the tenth output channel is configured to output a tenth voltage value according to whether the tenth enable signal is enabled, the eleventh output channel is configured to output an eleventh voltage value according to whether the eleventh enable signal is enabled, the twelfth output channel is configured to output a twelfth voltage value according to whether the twelfth enable signal is enabled, and the ninth voltage value, the tenth voltage value, the eleventh voltage value and the twelfth voltage value are not equal to each other.

8. The display device according to any one of claims 1 to 7, characterized in that: The timing controller is configured to monitor the working states of the plurality of loads, and adjust the level states of the plurality of target enable signals according to the working states, so as to control the connection states of the plurality of voltage output channels.

9. The display device according to claim 8, characterized in that: The timing controller includes a storage module storing a power-on timing sequence, and the timing controller further adjusts the level states of the plurality of target enable signals according to the power-on timing sequence.

10. An electronic device, characterized in that: The electronic device comprises the display device according to any one of claims 1 to 9.

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