Drive and electronic devices

Abstract

The present disclosure relates to a driving device and an electronic device. The device includes a voltage generating module that generates a first voltage and a second voltage, a capacitor module, a switch module that outputs the first voltage to a first end of the capacitor module during a first time period and outputs the second voltage to a second end of the capacitor module during a second time period to set the voltage at the first end of the capacitor module, a light-emitting module, and a transistor module that drives the light-emitting module to emit light with the voltage at the first end of the capacitor module. In an embodiment of the present disclosure, the device can compensate for losses in the transistor module, and can improve the brightness of the light-emitting module by turning on the transistor module with the stable voltage at the first end of the capacitor module.

Description

[Technical field]

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

[0002] With the continuous development of science and technology and the continuous improvement of people's living standards, various electronic devices with display functions are becoming more and more popular. However, currently, the display panels of electronic devices have problems such as insufficient brightness or flicker due to problems of the display panels themselves, which not only affect the user experience but also shorten the lifespan of the display panels. Summary of the Invention

[0003] In view of the above, the present disclosure provides a power supply voltage regulator including: a voltage generating module that generates a first voltage and a second voltage; A capacitor module; a switch module electrically connected to the voltage generating module and the capacitor module, for outputting the first voltage to a first end of the capacitor module in a first time period and outputting the second voltage to a second end of the capacitor module in a second time period to set a voltage of the first end of the capacitor module; A light emitting module; a transistor module electrically connected to the first end of the capacitor module and the light emitting module, for driving the light emitting module to emit light with a voltage at the first end of the capacitor module.

[0004] In one possible embodiment, the voltage generating module comprises: The first voltage generating unit generates the first voltage according to a preset brightness-voltage relationship including brightness information and an associated relationship between the brightness information and a voltage.

[0005] In one possible embodiment, the voltage generating module comprises: The transistor module further includes a second voltage generating unit for generating the second voltage based on the type of the transistor and the threshold voltage of the transistor in the transistor module.

[0006] In one possible embodiment, the step of generating the second voltage based on the type of transistors and the threshold voltages of the transistors in the transistor module comprises: generating a second voltage, the second voltage being greater than the threshold voltage of the NMOS transistor and positive if the transistor in the transistor module is an NMOS transistor; or When the transistors in the transistor module are PMOS transistors, generating a second voltage whose value is greater than and negative than a threshold voltage of the PMOS transistor.

[0007] In one possible embodiment, the switch module comprises: a first switch having a first end receiving the first voltage and a second end electrically connected to the first end of the capacitor module; a second switch having a first end electrically connected to ground and a second end electrically connected to the second end of the capacitor module; and a third switch having a first end receiving the second voltage and a second end electrically connected to the second end of the capacitor module.

[0008] In one possible embodiment, the switch module further comprises: During a first time period, the first switch and the second switch are turned on, the third switch is turned off, and the first voltage is output to the first end of the capacitor module; In a second time period, the third switch is turned on, the first switch and the second switch are turned off, and the second voltage is output to the second end of the capacitor module.

[0009] In one possible embodiment, the capacitor module comprises: The first capacitor has a first end electrically connected to the switch module and the transistor module as a first end of the capacitor module, and a second end electrically connected to the switch module as a second end of the capacitor module.

[0010] In one possible embodiment, the driving device may include a plurality of transistor modules, a plurality of capacitor modules, and a plurality of light emitting modules; the switch module may include a plurality of first switches; and the voltage generating module may generate a plurality of first voltages; the voltage generation module is further adapted to output a respective one of a plurality of first voltages associated with each of the transistor modules; The switch module is further used for setting the voltages of the first ends of the capacitor modules at the first voltages and the second voltages, respectively, so that the transistor module drives the light emitting module.

[0011] In one possible embodiment, the light emitting module includes one or more of an LCD, an LED, a MiniLED, a MicroLED, and an OLED.

[0012] According to one aspect of the present disclosure, there is provided an electronic device including the drive device described above.

[0013] In one possible embodiment, the electronic device comprises a display, a smart phone, or a mobile device.

[0014] In the embodiment of the present disclosure, the above device generates a first voltage and a second voltage, and the switch module outputs the first voltage or the second voltage to both ends of the capacitor module at different times, thereby controlling the first end of the capacitor module to reach a stable state. In this way, the compensation for the loss existing in the transistor module can be realized, and the stable voltage of the first end of the capacitor module can be used to turn on the transistor module to drive the light emitting module to emit light, thereby improving the brightness of the light emitting module.

[0015] Other features and aspects of the present disclosure will become more apparent from the following detailed description of exemplary embodiments taken in conjunction with the drawings. [Brief description of the drawings]

[0016] The drawings, which are incorporated into the specification as a part thereof, illustrate exemplary embodiments, features and aspects of the present disclosure and together with the specification serve to explain the principles of the present disclosure. [Figure 1] FIG. 2 shows a block diagram of a drive unit according to one embodiment of the present disclosure. [Diagram 2] 1 shows a schematic diagram of a drive arrangement according to one embodiment of the present disclosure. [Diagram 3] 1 shows a schematic diagram of a drive arrangement according to one embodiment of the present disclosure. [Figure 4] 1 shows a schematic diagram of a drive arrangement according to one embodiment of the present disclosure. [Diagram 5] 1 shows a schematic diagram of a drive arrangement according to one embodiment of the present disclosure. [Figure 6] 1 shows a schematic diagram of a drive arrangement according to an embodiment of the present disclosure. [Figure 7] 1 shows a schematic diagram of a drive arrangement according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Various exemplary embodiments, features, and aspects of the present disclosure are described in detail below with reference to the drawings, in which like reference numerals represent elements of the same or similar function. While illustrating various aspects of the embodiments in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0018] The word "exemplary" herein means "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or superior over other embodiments.

[0019] In addition, in order to better explain the present disclosure, many specific details are shown in the following specific embodiments. It should be understood by those skilled in the art that the present disclosure can be similarly implemented without any specific details. In some embodiments, in order to emphasize the gist of the present disclosure, detailed descriptions are not provided for methods, means, elements and circuits that are well known to those skilled in the art.

[0020] Please refer to FIG. 1, which shows a block diagram of a drive unit according to one embodiment of the present disclosure.

[0021] As shown in FIG. 1, the device includes a voltage generating module 10 for generating a first voltage and a second voltage; A capacitor module 30; a switch module 20 electrically connected to the voltage generating module 10 and the capacitor module 30, for outputting the first voltage to a first end of the capacitor module 30 in a first time period and outputting the second voltage to a second end of the capacitor module 30 in a second time period, thereby setting the voltage of the first end of the capacitor module 30; A light emitting module 50; a transistor module 40 electrically connected to the first end of the capacitor module 30 and the light emitting module 50, for driving the light emitting module 50 to emit light with a voltage at the first end of the capacitor module 30.

[0022] In the embodiment of the present disclosure, the above device generates a first voltage and a second voltage, and the switch module outputs the first voltage or the second voltage to both ends of the capacitor module at different times, thereby controlling the first end of the capacitor module to reach a stable state. In this way, the compensation for the loss existing in the transistor module can be realized, and the stable voltage of the first end of the capacitor module is used to turn on the transistor module to drive the light emitting module to emit light, thereby improving the brightness of the light emitting module and solving the flicker problem.

[0023] The device according to the embodiment of the present disclosure may be various electronic devices with a display function, and may also be called a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc., and is a device that provides voice and / or data connectivity to a user, such as a handheld device with a wireless connection function, an in-vehicle device, etc. Currently, some examples of terminals include a mobile phone, a tablet computer, a laptop, a palmtop computer, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in selfdriving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, a wireless terminal in telematics, etc.

[0024] In one possible embodiment, the light-emitting module may include one or more of an LCD (Liquid Crystal Display), an LED (Light Emitting Diode), a MiniLED (Mini Light Emitting Diode), a MicroLED (Micro Light Emitting Diode), and an OLED (Organic Light-Emitting Diode).

[0025] In addition, each module in the device according to the embodiment of the present disclosure may be realized by a hardware circuit, and the following provides an exemplary explanation of how each module in the driving device can be realized.

[0026] Please refer to FIG. 2, which shows a schematic diagram of a drive unit according to one embodiment of the present disclosure.

[0027] In one possible embodiment, as shown in FIG. 2, the voltage generating module 10 includes: The display device may further include a first voltage generating unit 110 for generating the first voltage Vin based on a preset brightness-voltage relationship including brightness information and an associated relationship between the brightness information and a voltage.

[0028] In one example, the preset luminance relationship can be preset, for example, the luminance-voltage association relationship can be set based on the type of display transistor included in the light-emitting module, and different preset luminance-voltage relationships can be set for different light-emitting modules. The preset luminance relationship can be in the form of a table or other forms, and the embodiments of the present disclosure are not limited thereto.

[0029] In the embodiments of the present disclosure, the specific preset brightness relationship is not limited, and the type of the light-emitting module is not limited, and those skilled in the art can set it as needed.

[0030] In the present disclosure, the specific embodiment of the first voltage generating unit is not limited, and those skilled in the art can select a voltage generating device (e.g., an AC / DC conversion device, a DC / DC conversion device) in the relevant technology according to need.

[0031] In one example, the voltage generating module may include a storage unit (not shown) for storing preset brightness relationships or other data generated by each module of the driving device.

[0032] The storage unit may be realized by various types of volatile or non-volatile storage devices or combinations thereof, such as, for example, static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0033] In one possible embodiment, the transistor module 40 may include at least one transistor, and the type of the transistor may be an NMOS (N-Metal-Oxide-Semiconductor) transistor, a PMOS (P-Metal-Oxide-Semiconductor) transistor, etc.

[0034] The transistor module 40 can be used as a driving stage of the light emitting module 50 to drive the light emitting module to emit light.

[0035] In one example, since the transistor has a threshold voltage VTH, when the transistor module is turned on to drive the light emitting module, the threshold voltage VTH causes a loss of the first voltage generated by the first voltage generation unit 110. If the transistor module is still turned on to drive the light emitting module with the first voltage, the light emitting brightness will be insufficient, causing the display of the light emitting module to be abnormal, which will affect the user experience.

[0036] In one possible embodiment, as shown in FIG. 2, the voltage generating module 10 includes: The transistor module 40 may further include a second voltage generating unit 120 for generating a second voltage VX based on the type of transistor in the transistor module 40 and the threshold voltage of the transistor.

[0037] In the embodiment of the present disclosure, the second voltage generating unit generates a second voltage based on the type of transistor and the threshold voltage of the transistor, thereby compensating for the transistor losses in the transistor module and improving the brightness of the light emitting module.

[0038] It should be noted that the embodiments of the present disclosure do not limit the specific embodiment of the second voltage generating unit, and those skilled in the art can select a voltage generating device in the relevant technology according to their needs.

[0039] In one possible embodiment, the step of generating the second voltage based on the type of transistors and the threshold voltages of the transistors in the transistor module comprises: generating a second voltage, the second voltage being greater than the threshold voltage of the NMOS transistor and positive if the transistor in the transistor module is an NMOS transistor; or When the transistors in the transistor module are PMOS transistors, the method may include generating a second voltage whose value is greater than and negative than a threshold voltage of the PMOS transistor.

[0040] In embodiments of the present disclosure, for different types of transistors, a second voltage greater than the threshold voltage of the transistor can be generated, and the positive or negative value of the second voltage can be adjusted based on the type, thereby correspondingly compensating for losses of the different types of transistors and improving applicability.

[0041] In one possible embodiment, as shown in FIG. 2, the switch module 20 includes: a first switch S1, a first terminal of which receives the first voltage Vin and a second terminal of which is electrically connected to a first terminal of the capacitor module 30; a second switch S2, the first end of which is grounded and the second end of which is electrically connected to the second end of the capacitor module 30; a third switch S3 having a first terminal receiving the second voltage VX and a second terminal electrically connected to the second terminal of the capacitor module 30.

[0042] In the embodiment of the present disclosure, the switches of the switch module can output a first voltage and a second voltage to the first end and the second end of the capacitor module respectively at different time periods, thereby adjusting the voltage at the first end of the capacitor module, compensating for the losses of the transistor module, and improving the driving capability when driving the light emitting module.

[0043] Please refer to FIG. 3 and FIG. 4, which show schematic diagrams of a drive device according to one embodiment of the present disclosure.

[0044] In one possible embodiment, as shown in FIG. 3, the switch module further comprises: In a first time period, the first switch S1 and the second switch S2 may be turned on, and the third switch S3 may be turned off, so as to output the first voltage Vin to the first end of the capacitor module 30.

[0045] In one example, an embodiment of the present disclosure can stabilize the voltage at the first end of the capacitor module to a first voltage by turning on the first switch S1 and the second switch S2 and turning off the third switch S3 during a first time period.

[0046] In one possible embodiment, as shown in FIG. 4, during a second time period, the third switch S3 is turned on, and the first switch S1 and the second switch S2 are turned off to output the second voltage VX to the second end of the capacitor module 30.

[0047] In one example, the embodiment of the present disclosure can turn on the third switch S3 and turn off the first switch S1 and the second switch S2 in the second time period, thereby increasing the voltage at the first end of the capacitor module to V1+V2, that is, the voltage at the input end of the transistor module VG=V1+V2. In this way, the embodiment of the present disclosure can compensate for the loss of the transistor module and improve the brightness of the light emitting module.

[0048] In one example, assuming that the transistor in the transistor module is an NMOS transistor, and the second voltage generated based on the threshold voltage of the NMOS transistor is 4V, and the first voltage generated based on the preset brightness relationship is 5V, the voltage at the first end of the capacitor module, i.e., the input end voltage of the transistor module, is VG=V1+V2=9V.

[0049] In one example, assuming that the transistor in the transistor module is a PMOS transistor, and the second voltage generated based on the threshold voltage of the PMOS transistor is -4V, and the first voltage generated based on the preset brightness relationship is 1V, the voltage at the first end of the capacitor module, i.e., the input end voltage of the transistor module VG=V1+V2=-3V.

[0050] In one possible embodiment, as shown in FIG. 2, the capacitor module 30 includes: It may also include a first capacitor C1 having a first end electrically connected to the switch module 20 and the transistor module 40 as a first end of the capacitor module 30, and a second end electrically connected to the switch module 20 as a second end of the capacitor module 30.

[0051] In other embodiments, the capacitor module may further include other capacitors, and the first capacitor C1 may be a parallel-series configuration of multiple capacitors and other elements, and the embodiments of the present disclosure are not limited thereto.

[0052] Please refer to FIG. 5, which shows a schematic diagram of a drive unit according to one embodiment of the present disclosure.

[0053] In one possible embodiment, as shown in FIG. 5, the light-emitting module 50 may be provided between the transistor module and the voltage VDD, in order to distinguish it from the form shown in FIG. 2, thereby enabling the light-emitting module to be driven by a different type of transistor.

[0054] Please refer to FIG. 6, which shows a schematic diagram of a drive unit according to one embodiment of the present disclosure.

[0055] In one possible embodiment, as shown in FIG. 6, the switch module, the capacitor module, the transistor module, and the light-emitting module may be combined into a single display module, and multiple display modules may be driven by a first voltage Vin and a second voltage VX generated by a single voltage generation module, thereby eliminating the effects of losses in the transistor modules in each display module and improving the light-emitting brightness of the light-emitting modules.

[0056] Please refer to FIG. 7, which shows a schematic diagram of a drive unit according to one embodiment of the present disclosure.

[0057] In one possible embodiment, as shown in FIG. 7, it may include a plurality of transistor modules, a plurality of capacitor modules, and a plurality of light emitting modules, the switch module may include a plurality of first switches (S11 to S1K, K is an integer greater than or equal to 1), and the first voltage generation unit may generate a plurality of first voltages (Vin1 to VinkK). the voltage generation module is further adapted to output a plurality of first voltages each associated with a respective one of the transistor modules; The switch module is further used for setting the voltages of the first ends of the capacitor modules at the first voltages and the second voltages, respectively, so that the transistor module drives the light emitting module.

[0058] Regarding the connections of modules such as the voltage generating module, the switch module, and the capacitor module in the above-mentioned device, the above description may be referred to, and therefore a description thereof will be omitted here.

[0059] With the above settings, the embodiments of the present disclosure can widen the application range of the driving device, perform adaptive voltage compensation for multiple transistors in the display panel, improve the display brightness of each light-emitting module, and improve the display effect of the entire display panel.

[0060] Although each embodiment of the present disclosure has been described above, the above description is illustrative and not restrictive, and the present disclosure is not limited to each of the disclosed embodiments. Various modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of each of the described embodiments. The terms used in the present specification are selected to best explain the principles, practical applications, or improvements to technology in the marketplace of each embodiment, or to enable a person skilled in the art to understand each embodiment disclosed in the present specification.

Claims

1. a voltage generating module for generating a first voltage and a second voltage; A capacitor module; a switch module electrically connected to the voltage generating module and the capacitor module, for outputting the first voltage to a first end of the capacitor module in a first time period and outputting the second voltage to a second end of the capacitor module in a second time period different from the first time period, thereby setting a voltage of the first end of the capacitor module; A light emitting module; a transistor module electrically connected to a first end of the capacitor module and the light emitting module, and configured to drive the light emitting module to emit light using a voltage at the first end of the capacitor module; the voltage generation module is configured to generate the second voltage based on a type of transistor and a threshold voltage of the transistor in the transistor module; The step of generating the second voltage based on the type of transistor and the threshold voltage of the transistor in the transistor module includes: generating a second voltage, the second voltage being greater than the threshold voltage of the NMOS transistor and positive if the transistor in the transistor module is an NMOS transistor; or generating a second voltage, the second voltage being greater than and negative than a threshold voltage of the PMOS transistor, when the transistor in the transistor module is a PMOS transistor; The driving device, characterized in that the voltage generation module includes a first voltage generation unit configured to generate the first voltage based on luminance information and a predetermined luminance-voltage relationship, the predetermined luminance-voltage relationship including an association relationship between luminance information and voltage, and is set in advance based on the type of display transistor included in the light-emitting module.

2. The switch module includes: a first switch having a first end receiving the first voltage and a second end electrically connected to the first end of the capacitor module; a second switch having a first end electrically connected to ground and a second end electrically connected to the second end of the capacitor module; 2. The drive device of claim 1, further comprising: a third switch having a first end receiving the second voltage and a second end electrically connected to the second end of the capacitor module.

3. The switch module further comprises: During a first time period, the first switch and the second switch are turned on, the third switch is turned off, and the first voltage is output to a first end of the capacitor module; 3. The driving device of claim 2, wherein during a second time period, the third switch is turned on, the first switch and the second switch are turned off, and the second voltage is output to the second end of the capacitor module.

4. The capacitor module includes:

2. The drive device of claim 1, further comprising a first capacitor having a first end electrically connected to the switch module and the transistor module as a first end of the capacitor module, and a second end electrically connected to the switch module as a second end of the capacitor module.

5. The driving device includes a plurality of transistor modules, a plurality of capacitor modules, and a plurality of light emitting modules, the switch module includes a plurality of first switches, and the voltage generating module generates a plurality of first voltages; the voltage generation module is further adapted to output a respective one of a plurality of first voltages associated with each of the transistor modules; 2. The driving device according to claim 1, wherein the switch module is further used to set the voltages at the first ends of the capacitor modules at the first voltages and the second voltages, respectively, so that the transistor module drives the light-emitting module.

6. The driving device according to claim 1 , wherein the light emitting module includes one or more of an LCD, an LED, a Mini LED, a Micro LED, and an OLED.

7. An electronic device comprising the drive device according to any one of claims 1 to 6.

8. 8. The electronic device of claim 7, comprising a display, a smartphone, or a mobile device.

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