CN113870807A - Display, electronic device, and method for driving display - Google Patents
Display, electronic device, and method for driving display Download PDFInfo
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- CN113870807A CN113870807A CN202111106205.4A CN202111106205A CN113870807A CN 113870807 A CN113870807 A CN 113870807A CN 202111106205 A CN202111106205 A CN 202111106205A CN 113870807 A CN113870807 A CN 113870807A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
Abstract
The application provides a display, an electronic device and a driving method of the display, the display includes: a display module; the driving circuit is provided with a plurality of first output ends, and each first output end can output different voltage signals to the display module; and an auxiliary drive circuit, the auxiliary drive circuit being different from the drive circuit; under the first condition, all the first output ends can output different voltage signals to drive the display module; in the second case, all the first output terminals output a plurality of different voltage signals, and the voltage signals output by each of the second output terminals drive the display module together. The display module is driven by the drive circuit, and the auxiliary drive circuit is started to drive the display module together when more drive voltages are needed, so that reasonable allocation of resources is realized.
Description
Technical Field
The present application belongs to the field of display technologies, and in particular, to a display, an electronic device, and a driving method of a display.
Background
Along with the development of science and technology, the degree of integration of chip is higher and higher, and the display need produce each way drive voltage through power drive chip and drive the demonstration when normal work.
In the prior art, a voltage reduction circuit is usually configured for each driving voltage of the power driving chip, however, not all driving voltages are commonly used, and thus, the plurality of voltage reduction circuits are easily wasted in resources.
Disclosure of Invention
The embodiment of the application provides a display, an electronic device and a driving method of the display, so as to solve the problem that resource waste is easily caused by configuring a voltage reduction circuit for each driving voltage in the prior art.
An embodiment of the present application provides a display, including:
a display module;
the driving circuit is provided with a plurality of first output ends, each first output end is connected to the display module, and each first output end can output different voltage signals to drive the display module; and
the auxiliary driving circuit is provided with at least one second output end, each second output end is connected to the display module, a voltage signal output by each second output end is different from a voltage signal output by any first output end, and the auxiliary driving circuit is different from the driving circuit;
under the first condition, all the first output ends can output different voltage signals to drive the display module;
in the second case, all the first output terminals output a plurality of different voltage signals, and the voltage signal output by each second output terminal drives the display module together.
Optionally, the driving circuit includes a first driving sub-circuit, a second driving sub-circuit and a third driving sub-circuit, each driving sub-circuit has one first output end, and all the first output ends are connected to the display module;
the auxiliary driving circuit is provided with a second output end, and the second output end is connected with the display module;
under the first condition, the first output end of the first driving sub-circuit outputs a first driving voltage, the first output end of the second driving sub-circuit outputs a third driving voltage, and the first output end of the third driving sub-circuit outputs a fourth driving voltage to drive the display module;
in a second case, the first output terminal of the first driving sub-circuit outputs the first driving voltage, the first output terminal of the second driving sub-circuit outputs the second driving voltage, the first output terminal of the third driving sub-circuit outputs the third driving voltage, and the second output terminal outputs the fourth driving voltage to drive the display module together.
Optionally, the first driving sub-circuit, the second driving sub-circuit, and the third driving sub-circuit each include:
the voltage reduction circuit is provided with a signal output end and a feedback end, and the feedback end is connected with the first output end;
one end of the inductor is connected with the signal output end, and the other end of the inductor is connected with the first output end; and
and one end of the capacitor is connected with the other end of the inductor, and the other end of the capacitor is grounded.
Optionally, the auxiliary driving circuit includes:
the amplifier is provided with a first input end, a second input end and the second output end, the first input end is connected with a first gamma voltage and a second gamma voltage, and the second input end is connected with the second output end.
Optionally, the first driving voltage is 1.8V, the second driving voltage is 1.9V, the third driving voltage is 3.3V, and the fourth driving voltage is half voltage.
Optionally, the display further includes:
a processor electrically connected to the drive circuit and the auxiliary drive circuit, the processor configured to:
receiving an input signal;
and adjusting the control signal according to the input signal to enable all first output ends of the driving circuit to output different voltage signals and all second output ends of the auxiliary driving circuit to output different voltage signals.
An embodiment of the present application further provides an electronic device, including the display as described in any one of the above.
The embodiment of the application also provides a driving method of a display, the display comprises a display module, a driving circuit and an auxiliary driving circuit, the driving circuit is different from the auxiliary driving circuit, the driving circuit is provided with a plurality of first output ends, each first output end is connected with the display module, the auxiliary driving circuit is provided with at least one second output end, and each second output end is connected with the display module; the driving method includes:
under the first condition, controlling all first output ends of the driving circuit to output different voltage signals so as to drive the display module;
under the second condition, all the first output ends of the driving circuits are controlled to output different voltage signals, and each second output end of the auxiliary driving circuit is controlled to output a voltage signal, so that the display module is driven together.
Optionally, the driving circuit includes a first driving sub-circuit, a second driving sub-circuit and a third driving sub-circuit, each driving sub-circuit has one first output end, and all the first output ends are connected to the display module; the auxiliary driving circuit is provided with a second output end, and the second output end is connected with the display module; the driving method further includes:
under the first condition, the first output end of the first driving sub-circuit outputs a first driving voltage, the first output end of the second driving sub-circuit outputs a third driving voltage, and the first output end of the third driving sub-circuit outputs a fourth driving voltage to drive the display module;
in a second case, the first output terminal of the first driving sub-circuit outputs the first driving voltage, the first output terminal of the second driving sub-circuit outputs the second driving voltage, the first output terminal of the third driving sub-circuit outputs the third driving voltage, and the second output terminal outputs the fourth driving voltage to drive the display module together.
Optionally, the driving method further includes:
receiving an input signal;
and adjusting the control signal according to the input signal to enable all first output ends of the driving circuit to output different voltage signals and all second output ends of the auxiliary driving circuit to output different voltage signals.
In the display, electronic equipment and driving method of display that this application embodiment provided, use different voltage signal drive display module assembly that drive circuit output respectively or use different voltage signal drive display module assembly jointly of drive circuit and auxiliary drive circuit output under different circumstances, make full use of drive circuit to drive display module assembly, and launch auxiliary drive circuit and drive display module assembly jointly when needing more drive voltages, the rational configuration of resource has been realized, the problem of wasting on the resource easily is caused to every drive voltage configuration step-down circuit among the prior art is solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the application, and that other drawings can be derived from these drawings by a person skilled in the art without inventive effort.
For a more complete understanding of the present application and its advantages, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. Wherein like reference numerals refer to like parts in the following description.
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Fig. 2 is a schematic view of a first structure of a display in the electronic device shown in fig. 1.
Fig. 3 is a schematic diagram of a second structure of the display in the electronic device shown in fig. 1.
Fig. 4 is a schematic structural diagram of a driving circuit and an auxiliary driving circuit in the display shown in fig. 2.
Fig. 5 is a flowchart illustrating a driving method of a display according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure. The embodiment of the application provides an electronic device 1, and the electronic device 1 comprises a display 10. The electronic device 1 may be a mobile terminal device with a display 10, such as a mobile phone and a tablet computer, and may also be a device with a display 10, such as a television, a game device, an Augmented Reality (AR) device, a Virtual Reality (VR) device, an on-vehicle computer, a notebook computer, an audio playing device, a video playing device, and a wearable device, where the wearable device may be an intelligent bracelet, an intelligent glasses, and the like. The embodiment of the present application will be described taking the electronic device 1 as a television as an example. For a large-sized lcd, when the display 10 normally works, the power driving circuit needs to generate each driving voltage for driving the display, and in the prior art, a voltage dropping circuit is usually configured for each driving voltage. However, not every driving voltage is commonly used, and therefore, disposing a voltage-reducing circuit for every driving voltage is likely to cause waste of resources.
In order to solve the above problems, embodiments of the present application provide a display and a driving method of the display, which will be described below in terms of a structure of the display and a driving method of the display, respectively, with reference to the accompanying drawings.
For example, please refer to fig. 2 in conjunction with fig. 1, and fig. 2 is a schematic diagram of a first structure of a display in the electronic device shown in fig. 1. The embodiment of the application provides a display 10, and the display 10 includes a display module 11, a driving circuit 12 and an auxiliary driving circuit 13. The driving circuit 12 has a plurality of first output terminals, each of which is connected to the display module 11, and each of the first output terminals can output different voltage signals to drive the display module 11. The auxiliary driving circuit 13 has at least one second output terminal, each second output terminal is connected to the display module 11, and a voltage signal output by each second output terminal is different from a voltage signal output by any first output terminal. In the first case, all the first output terminals can output different voltage signals to drive the display module 11. In the second case, all the first output terminals output a plurality of different voltage signals, and the voltage signal output by each second output terminal drives the display module 11 together.
Under different conditions, different voltage signals output by the driving circuit 12 are used for driving the display module 11 or different voltage signals output by the driving circuit 12 and the auxiliary driving circuit 13 are used for driving the display module 11 together, the driving circuit 12 is fully utilized for driving the display module 11, the auxiliary driving circuit 13 is started when more driving voltages are needed, the auxiliary driving circuit 12 is used for driving the display module 11 together, reasonable configuration of resources is achieved, and the problem that in the prior art, a voltage reduction circuit is configured for each driving voltage to easily cause resource waste is solved.
The display module 11 may have a display screen, and the display screen may display a picture under the driving of the driving circuit 12. The types of commonly used displays 10 are Liquid Crystal Displays (LCD) and Organic Light-Emitting displays (OLED), depending on the Display mode. The LCD is constructed by placing a liquid crystal box between two parallel glass substrates, arranging a TFT (Thin Film Transistor) on the lower substrate glass, arranging a color filter on the upper substrate glass, and controlling the rotation direction of liquid crystal molecules by changing the signal and voltage on the TFT, so as to control whether polarized light of each pixel point is emitted or not to achieve the purpose of display. The OLED is a current-type organic light emitting device, and emits light by injection and recombination of carriers, and the intensity of light emission is proportional to the injected current. Under the action of an electric field, holes generated by an anode and electrons generated by a cathode move, are respectively injected into a hole transport layer and an electron transport layer, and migrate to a light emitting layer. When the two meet at the light emitting layer, energy excitons are generated, thereby exciting the light emitting molecules to finally generate visible light. The light emitting principle of the LCD is different from that of the OLED, the LCD mainly emits light through a backlight layer, the OLED is self-luminous, and each pixel can be independently opened and closed. The embodiments of the present application take an LCD as an example for illustration.
Referring to fig. 3 in conjunction with fig. 1 and fig. 2, fig. 3 is a schematic diagram of a second structure of the display in the electronic device shown in fig. 1. The display 10 may further include a processor 14, the processor 14 being electrically connected to the driving circuit 12 and the auxiliary driving circuit 13, the processor 14 being configured to: receiving an input signal; the control signals are adjusted in dependence on the input signals to cause all first outputs of the driver circuits 12 to output different voltage signals and to cause all second outputs of all auxiliary driver circuits 13 to output different voltage signals. For example, the input signal may be a voltage signal, the control signal may be a PWM (Pulse width modulation) signal, and when the driving circuit 12 is required to output different driving voltages, the driving circuit 12 may be adjusted to output different driving voltages by adjusting a duty ratio of the PWM based on the input signal.
For example, please refer to fig. 4 in conjunction with fig. 1 to fig. 3, and fig. 4 is a schematic structural diagram of the driving circuit and the auxiliary driving circuit in the display shown in fig. 2. The driving circuit 12 may include a first driving sub-circuit 121, a second driving sub-circuit 122, and a third driving sub-circuit 123. The first driving sub-circuit 121 has a first output terminal O1, and the first output terminal O1 is connected to the display module 11, so that the driving circuit 12 can transmit the driving voltage to the display module 11. Similarly, the second driving sub-circuit 122 has a first output terminal O2, and the first output terminal O2 is connected to the display module 11, so that the driving resistor 12 can transmit the driving voltage to the display module 11. The third driving sub-circuit 123 has a first output terminal O3, and the first output terminal O3 is connected to the display module 11, so that the driving circuit 12 can transmit the driving voltage to the display module 11. It should be noted that the first output terminal O1 of the first driving sub-circuit 121, the first output terminal O2 of the second driving sub-circuit 122, and the first output terminal O3 of the third driving sub-circuit 123 may be respectively connected to different display modules of the display module 11.
For example, the auxiliary driving circuit 13 may have a second output terminal O4, and the second output terminal O4 is connected to the display module 11 for outputting the driving voltage to the display module 11.
The driving scheme for the display 10 can be divided into two cases, in each case the processor 14 configures the driver circuit 12 and the auxiliary driver circuit 13 to different output cases.
In the first case, the first output terminal O1 of the first driving sub-circuit 121 outputs the first driving voltage, the first output terminal O2 of the second driving sub-circuit 122 outputs the third driving voltage, and the first output terminal O3 of the third driving sub-circuit 123 outputs the fourth driving voltage to drive the display module 11. It is understood that, in the first case, the display 10 only needs the first driving voltage, the third driving voltage and the fourth driving voltage, and the auxiliary driving circuit 13 may not be enabled at this time, and the processor 14 configures the first driving sub-circuit 121, the second driving sub-circuit 122 and the third driving sub-circuit 123 of the driving circuit 12 to be capable of outputting the first driving voltage, the third driving voltage and the fourth driving voltage.
In the second case, the first output terminal O1 of the first driving sub-circuit 121 outputs the first driving voltage, the first output terminal O2 of the second driving sub-circuit 122 outputs the second driving voltage, the first output terminal O3 of the third driving sub-circuit 123 outputs the third driving voltage, and the second output terminal O4 outputs the fourth driving voltage to commonly drive the display module 11. It will be appreciated that in the second case, where the display 10 requires the first, second, third and fourth drive voltages simultaneously, the drive circuit 12 having three drive sub-circuits may generate three drive voltages, and the other drive voltage may be generated by the auxiliary drive circuit 13. At this time, the processor 14 configures the first driving sub-circuit 121, the second driving sub-circuit 122, and the third driving sub-circuit 123 of the driving circuit 12 to be capable of outputting the first driving voltage, the second driving voltage, and the third driving voltage, and configures the auxiliary driving circuit 13 to be capable of outputting the fourth driving voltage, which collectively drive the display module 11.
For example, the first driving voltage may be 1.8V, the second driving voltage may be 1.9V, the third driving voltage may be 3.3V, and the fourth driving voltage may be a half voltage. Illustratively, the voltage range of half voltage may be 7V-9V. It should be noted that the half voltage is a voltage for supporting the driving of the positive and negative polarities of the LCD, and the half voltage may be used to provide power for generating positive and negative voltages at two ends of the liquid crystal. It should be noted that the liquid crystal display realizes display by driving the rotation direction of the liquid crystal molecules through the alternate inversion of positive and negative voltages to control the emitting direction of the pixel points, the positive voltage is the voltage between the power voltage VAA and the VCOM electrode, and the negative voltage is the voltage between the VCOM electrode and the negative voltage such as the ground GND.
Note that conventional driving voltages are 1.8V, 1.9V, and 3.3V, which are generally generated by a step-down circuit (BUCK). The driving voltage required for the display 10 varies according to the screen size and refresh rate of the display 10. Wherein only a portion of the screen needs to be driven with a voltage of 1.9V. In the prior art, the driving circuit usually has four driving sub-circuits capable of generating 1.8V, 1.9V, 3.3V and half voltage, and 1.9V is a driving voltage which is less commonly used, and under the condition that most of the driving voltage does not need to be used with 1.9V, the 1 driving sub-circuit is idle, which causes waste of resources. Therefore, based on the above problems, the embodiment of the present application provides a display 10, which has a driving circuit 12 and an auxiliary driving circuit 13, the auxiliary driving circuit 13 is enabled when a driving voltage of 1.9V is needed, and the display module 11 can be driven only by using the driving circuit 12 when the driving voltage of 1.9V is not needed, so as to reasonably configure resources, and solve the problem of waste caused by unreasonable resource configuration.
It should be noted that the driving voltages that can be output by the first output terminal O1 of the first driving sub-circuit 121, the first output terminal O2 of the second driving sub-circuit, and the first output terminal O3 of the third driving sub-circuit may be random, that is, the first output terminal O1 of the first driving sub-circuit 121 may output any one of the first driving voltage, the second driving voltage, the third driving voltage, and the fourth driving voltage. The first output terminal O2 of the second driving sub-circuit and the first output terminal O3 of the third driving sub-circuit can output the same driving voltages as the first output terminal O1 of the first driving sub-circuit 121, and the first output terminal O1 of the first driving sub-circuit 121, the first output terminal O2 of the second driving sub-circuit and the first output terminal O3 of the third driving sub-circuit output different driving voltages. For convenience of control, in practical applications, the output voltage range of the first output terminal O1 of the first driving sub-circuit 121 may be set to 1.8V and 1.9V, the output voltage range of the first output terminal O2 of the second driving sub-circuit may be set to 1.9V and 3.3V, and the output voltage range of the first output terminal O3 of the third driving sub-circuit may be set to 3.3V and half voltage.
Illustratively, the first driving sub-circuit 121 includes a voltage-reducing circuit BUCK, an inductor L, and a capacitor C. The BUCK circuit BUCK has a signal output terminal LX and a feedback terminal FB, which is connected to the first output terminal O1. One end of the inductor L is connected to the signal output terminal LX, and the other end of the inductor L is connected to the first output terminal O1. One end of the capacitor C is connected with the other end of the inductor L, and the other end of the capacitor C is grounded.
Illustratively, the second driving sub-circuit 122 may include a voltage-reducing circuit BUCK, an inductor L, and a capacitor C. The third driving sub-circuit 123 may include a voltage dropping circuit BUCK, an inductor L, and a capacitor C. The circuit structures of the second driving sub-circuit 122 and the third driving sub-circuit 123 can refer to the first driving sub-circuit 121, and are not described herein again.
For example, the auxiliary driving circuit 13 may include an amplifier a having a first input terminal I1, a second input terminal I2, and a second output terminal O4, the first input terminal I1 being coupled to the first gamma voltage GM1 and the second gamma voltage GM2, and the second input terminal I2 being coupled to the second output terminal O4. It should be noted that the auxiliary driving circuit 13 may be understood as a follower, the driving voltage output by the second output terminal O4 is half of the sum of the first gamma voltage GM1 and the second gamma voltage GM2, and the driving voltage may vary according to the values of the first gamma voltage GM1 and the second gamma voltage GM 2. For example, in the application, the voltages of the first gamma voltage GM1 and the second gamma voltage GM2 may be set as fixed values, and the current thrust may be increased when the fourth driving voltage is generated by the auxiliary driving circuit 13.
Note that, the constituent devices of any one of the first drive sub-circuit 121, the second drive sub-circuit 122, and the third drive sub-circuit 123 are more than those of the auxiliary drive circuit 13. It is understood that the driving sub-circuit is mainly composed of the voltage-reducing circuit BUCK, which requires more constituent devices than the circuit structure of the amplifier a, and therefore, the power consumption of the driving circuit is high compared to the auxiliary driving circuit 13. Compared with the scheme of using four driving sub-circuits to generate four driving voltages in the prior art, the display 10 of the embodiment of the application saves one driving sub-circuit, reasonably configures resources, and has low cost.
In order to more clearly describe the control scheme of the display 10 in the embodiment of the present application, the following description will be made in terms of the driving method of the display.
For example, please refer to fig. 5, and fig. 5 is a flowchart illustrating a driving method of a display according to an embodiment of the present disclosure. For the structure of the display 10, reference may be made to fig. 1 to fig. 4 and the above description, which are not repeated herein. The driving method of the display comprises the following steps:
101. in the first situation, all the first output ends of the control driving circuit output different voltage signals to drive the display module.
The first case can be understood as a case where a certain drive voltage is not used. Illustratively, the driving circuit 12 includes a three-way driving sub-circuit, in the first case, the first output terminal O1 of the first driving sub-circuit 121 outputs the first driving voltage, the first output terminal O2 of the second driving sub-circuit 122 outputs the third driving voltage, and the first output terminal O3 of the third driving sub-circuit 123 outputs the fourth driving voltage to drive the display module 11. For example, conventional driving voltages are 1.8V, 1.9V, and 3.3V, which are generally generated by a step-down circuit (BUCK). The driving voltage required for the display 10 varies according to the screen size and refresh rate of the display 10. Wherein only a portion of the screen needs to be driven with a voltage of 1.9V. In the prior art, the driving circuit usually has four driving sub-circuits capable of generating 1.8V, 1.9V, 3.3V and half voltage, and 1.9V is a driving voltage which is less commonly used, and under the condition that most of the driving voltage does not need to be used with 1.9V, the 1 driving sub-circuit is idle, which causes waste of resources.
Under the condition that the driving voltage of 1.9V is not needed, that is, when the display 10 only needs the first driving voltage of 1.8V, the third driving voltage of 3.3V, and the fourth driving voltage, that is, half voltage at this time, the auxiliary driving circuit 13 may not be activated, and the first driving sub-circuit 121, the second driving sub-circuit 122, and the third driving sub-circuit 123 of the driving circuit 12 are configured to output the first driving voltage, the third driving voltage, and the fourth driving voltage, which drive the display module 11.
102. In the second case, all the first output terminals of the control driving circuit output different voltage signals and each second output terminal of the control auxiliary driving circuit outputs a voltage signal to drive the display module together.
For example, the driving circuit 12 includes three driving sub-circuits, and when the auxiliary driving circuit 13 is enabled, it can also be understood that when the display 10 needs a certain driving voltage, such as 1.9V, the first output terminal O1 of the first driving sub-circuit 121 outputs a first driving voltage, the first output terminal O2 of the second driving sub-circuit 122 outputs a second driving voltage, the first output terminal O3 of the third driving sub-circuit 123 outputs a third driving voltage, and the second output terminal O4 outputs a fourth driving voltage to drive the display module 11 together. It will be appreciated that in the second case, where the display 10 requires the first, second, third and fourth drive voltages simultaneously, the drive circuit 12 having three drive sub-circuits may generate three drive voltages, and the other drive voltage may be generated by the auxiliary drive circuit 13. At this time, the first driving sub-circuit 121, the second driving sub-circuit 122, and the third driving sub-circuit 123 of the driving circuit 12 are configured to be able to output the first driving voltage, the second driving voltage, and the third driving voltage, and the auxiliary driving circuit 13 is configured to be able to output the fourth driving voltage, which are commonly used to drive the display module 11.
The driving method of the display may further include: receiving an input signal; the control signals are adjusted according to the input signals so that all first output ends of the driving circuits output different voltage signals and all second output ends of all the auxiliary driving circuits output different voltage signals. For example, the input signal may be a voltage signal, the control signal may be a PWM signal, and when the driving circuit 12 is required to output different driving voltages, the driving circuit 12 may be adjusted to output different driving voltages by adjusting a duty ratio of the PWM based on the input signal.
Under different conditions, different voltage signals output by the driving circuit 12 are used for driving the display module 11 or different voltage signals output by the driving circuit 12 and the auxiliary driving circuit 13 are used for driving the display module 11 together, the driving circuit 12 is fully utilized for driving the display module 11, the auxiliary driving circuit 13 is started when more driving voltages are needed, the auxiliary driving circuit 12 is used for driving the display module 11 together, reasonable configuration of resources is achieved, and the problem that in the prior art, a voltage reduction circuit is configured for each driving voltage to easily cause resource waste is solved.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features.
The display, the electronic device and the driving method of the display provided by the embodiment of the present application are described in detail above, and a specific example is applied to illustrate the principle and the implementation of the present application, and the description of the above embodiment is only used to help understand the method of the present application and the core idea thereof; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A display, comprising:
a display module;
the driving circuit is provided with a plurality of first output ends, each first output end is connected to the display module, and each first output end can output different voltage signals to drive the display module; and
the auxiliary driving circuit is provided with at least one second output end, each second output end is connected to the display module, a voltage signal output by each second output end is different from a voltage signal output by any first output end, and the auxiliary driving circuit is different from the driving circuit;
under the first condition, all the first output ends can output different voltage signals to drive the display module;
in the second case, all the first output terminals output a plurality of different voltage signals, and the voltage signal output by each second output terminal drives the display module together.
2. The display according to claim 1, wherein the driving circuit comprises a first driving sub-circuit, a second driving sub-circuit and a third driving sub-circuit, each driving sub-circuit has one of the first output terminals, and all the first output terminals are connected to the display module;
the auxiliary driving circuit is provided with a second output end, and the second output end is connected with the display module;
under the first condition, the first output end of the first driving sub-circuit outputs a first driving voltage, the first output end of the second driving sub-circuit outputs a third driving voltage, and the first output end of the third driving sub-circuit outputs a fourth driving voltage to drive the display module;
in a second case, the first output terminal of the first driving sub-circuit outputs the first driving voltage, the first output terminal of the second driving sub-circuit outputs the second driving voltage, the first output terminal of the third driving sub-circuit outputs the third driving voltage, and the second output terminal outputs the fourth driving voltage to drive the display module together.
3. The display of claim 2, wherein the first, second, and third drive sub-circuits each comprise:
the voltage reduction circuit is provided with a signal output end and a feedback end, and the feedback end is connected with the first output end;
one end of the inductor is connected with the signal output end, and the other end of the inductor is connected with the first output end; and
and one end of the capacitor is connected with the other end of the inductor, and the other end of the capacitor is grounded.
4. The display according to any one of claims 1 to 3, wherein the auxiliary driving circuit comprises:
the amplifier is provided with a first input end, a second input end and the second output end, the first input end is connected with a first gamma voltage and a second gamma voltage, and the second input end is connected with the second output end.
5. The display according to claim 2, wherein the first driving voltage is 1.8V, the second driving voltage is 1.9V, the third driving voltage is 3.3V, and the fourth driving voltage is half voltage.
6. The display of claim 1, further comprising:
a processor electrically connected to the drive circuit and the auxiliary drive circuit, the processor configured to:
receiving an input signal;
and adjusting the control signal according to the input signal to enable all first output ends of the driving circuit to output different voltage signals and all second output ends of the auxiliary driving circuit to output different voltage signals.
7. An electronic device, characterized in that it comprises a display according to any one of claims 1-6.
8. A driving method of a display is characterized in that the display comprises a display module, a driving circuit and an auxiliary driving circuit, wherein the driving circuit is different from the auxiliary driving circuit, the driving circuit is provided with a plurality of first output ends, each first output end is connected with the display module, the auxiliary driving circuit is provided with at least one second output end, and each second output end is connected with the display module; the driving method includes:
under the first condition, controlling all first output ends of the driving circuit to output different voltage signals so as to drive the display module;
under the second condition, all the first output ends of the driving circuits are controlled to output different voltage signals, and each second output end of the auxiliary driving circuit is controlled to output a voltage signal, so that the display module is driven together.
9. The driving method according to claim 8, wherein the driving circuit comprises a first driving sub-circuit, a second driving sub-circuit and a third driving sub-circuit, each driving sub-circuit has one of the first output terminals, and all the first output terminals are connected to the display module; the auxiliary driving circuit is provided with a second output end, and the second output end is connected with the display module; the driving method further includes:
under the first condition, the first output end of the first driving sub-circuit outputs a first driving voltage, the first output end of the second driving sub-circuit outputs a third driving voltage, and the first output end of the third driving sub-circuit outputs a fourth driving voltage to drive the display module;
in a second case, the first output terminal of the first driving sub-circuit outputs the first driving voltage, the first output terminal of the second driving sub-circuit outputs the second driving voltage, the first output terminal of the third driving sub-circuit outputs the third driving voltage, and the second output terminal outputs the fourth driving voltage to drive the display module together.
10. The driving method according to claim 8, further comprising:
receiving an input signal;
and adjusting the control signal according to the input signal to enable all first output ends of the driving circuit to output different voltage signals and all second output ends of the auxiliary driving circuit to output different voltage signals.
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