CN215182991U - Electronic device and electronic apparatus - Google Patents
Electronic device and electronic apparatus Download PDFInfo
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- CN215182991U CN215182991U CN202120753768.1U CN202120753768U CN215182991U CN 215182991 U CN215182991 U CN 215182991U CN 202120753768 U CN202120753768 U CN 202120753768U CN 215182991 U CN215182991 U CN 215182991U
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Abstract
The utility model relates to an electronic device and electronic equipment, electronic device includes: the display module comprises a plurality of display units, each display unit comprises a driving circuit and a light-emitting element, and the driving circuit is used for receiving a light-emitting control signal, a data driving voltage, a first power supply voltage and a second power supply voltage so as to drive the light-emitting elements to emit light; a power module, configured to provide the first supply voltage and the second supply voltage, where the first supply voltage is higher than the second supply voltage; the control module is connected to the display module and the power module and used for: and when the light-emitting control signal is effective and the data driving voltage of any display unit is lower than a preset voltage, controlling the power supply module to stop providing the first power supply voltage and the second power supply voltage. The embodiment of the utility model provides a can avoid producing the condition that the heavy current leads to display panel to be burnt out among the display element, improve security, the durability of equipment.
Description
Technical Field
The utility model relates to a show technical field, especially relate to an electronic device and electronic equipment.
Background
With the development of technology, people's living standard is increasing, and various types of electronic devices with display function are becoming more popular, however, the current display panel adopts OLED as light emitting element, when the data voltage input of OLED generates signal abnormality, for example, the signal line has poor conduction or broken condition, but does not reach normal potential, the display panel is likely to generate large current and be burned.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides an electronic device, which includes:
the display module comprises a plurality of display units, each display unit comprises a driving circuit and a light-emitting element, and the driving circuit is used for receiving a light-emitting control signal, a data driving voltage, a first power supply voltage and a second power supply voltage so as to drive the light-emitting elements to emit light;
a power module, configured to provide the first supply voltage and the second supply voltage, where the first supply voltage is higher than the second supply voltage;
the control module is connected to the display module and the power module and used for: and when the light-emitting control signal is effective and the data driving voltage of any display unit is lower than a preset voltage, controlling the power supply module to stop providing the first power supply voltage and the second power supply voltage.
In one possible embodiment, the control module comprises:
the logic and operation unit is used for receiving a comparison result signal of the data driving voltage of each display unit and the preset voltage, executing logic and operation and outputting a first effective signal when the data driving voltage of any display unit is lower than the preset voltage;
and the logic or operation unit is used for receiving the first effective signal and the light-emitting control signal and executing logic or operation so as to output a second effective signal when the first effective signal and the light-emitting control signal are both effective, wherein the second effective signal is used for controlling the power supply module to stop providing the first power supply voltage and the second power supply voltage.
In a possible embodiment, the apparatus further comprises:
and the light-emitting driving module is connected with the driving circuit of each display unit and used for outputting the light-emitting control signal.
In a possible embodiment, the apparatus further comprises:
and the source electrode driving module is connected with the driving circuit of each display unit and used for receiving the data signal and generating the data driving voltage of each display unit according to the data signal.
In one possible embodiment, the driving circuit comprises a first PMOS transistor, a second PMOS transistor, a third PMOS transistor, wherein,
a source of the first PMOS transistor is to receive the first supply voltage,
a gate of the first PMOS transistor is connected to a gate of the third PMOS transistor for receiving the light emission control signal,
a drain of the first PMOS transistor is connected to a source of the second PMOS transistor for receiving the data driving voltage,
the drain of the second PMOS transistor is connected to the source of the third PMOS transistor, and the drain of the third PMOS transistor is connected to the light emitting element.
In a possible embodiment, the apparatus further comprises a comparison module comprising a plurality of comparators, each comparator corresponding to each display unit, wherein,
the positive input end of any comparator is used for receiving the data driving voltage of the corresponding display unit, the negative input end of each comparator is used for receiving the preset voltage, the comparator is used for comparing the data driving voltage with the preset voltage and outputting a comparison result signal, and when the data driving voltage is lower than the preset voltage, the comparison result signal is an effective signal.
In one possible embodiment, the light emitting element includes any one of an organic light emitting diode, a quantum dot light emitting diode, a mini light emitting diode, and a micro light emitting diode.
According to another aspect of the present invention, an electronic device is provided, which includes the electronic apparatus.
In one possible implementation, the electronic device comprises a display, a smartphone, or a portable device.
The embodiment of the utility model provides a can compare each display element's data drive voltage with predetermineeing the voltage to listen luminous control signal, work as when luminous control signal is effective and arbitrary display element's data drive voltage is less than when predetermineeing voltage, control power module stops providing first supply voltage reaches second supply voltage can avoid taking place to be unusually less than when predetermineeing voltage when display element's data drive voltage, the first supply voltage of power module output, second supply voltage produce the condition that the heavy current leads to display panel to be burnt out in display element, can improve display panel's life to avoid causing the conflagration, improved security, the durability of equipment.
Other features and aspects of the present invention will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present invention and, together with the description, serve to explain the principles of the invention.
Fig. 1 shows a block diagram of an electronic device according to an embodiment of the invention.
Fig. 2 shows a block diagram of an electronic device according to an embodiment of the invention.
Fig. 3 shows a schematic diagram of a display unit according to an embodiment of the invention.
Detailed Description
Various exemplary embodiments, features and aspects of the present invention will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
In the description of the present invention, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present invention.
Referring to fig. 1, fig. 1 is a block diagram of an electronic device according to an embodiment of the invention.
As shown in fig. 1, the electronic device includes:
the display module 10 comprises a plurality of display units 110, each display unit 110 comprises a driving circuit 1110 and a light emitting element 1120, the driving circuit 1110 is used for receiving a light emitting control signal EM and a data driving voltage VSRA first power supply voltage ELVDD and a second power supply voltage ELVSS for driving the light emitting element 1120 to emit light;
a power module 20, configured to provide the first power supply voltage ELVDD and the second power supply voltage ELVSS, where the first power supply voltage ELVDD is higher than the second power supply voltage ELVSS;
a control module 30 connected to the display module 10 and the power module 20, and configured to: when the emission control signal EM is asserted and the data driving voltage V of any one of the display units 110 is assertedSRLower than a predetermined voltage VREFWhen the voltage level of the first power supply voltage ELVDD is lower than the voltage level of the second power supply voltage ELVSS, the power module 20 is controlled to stop providing the first power supply voltage ELVDD and the second power supply voltage ELVSS.
The embodiment of the utility model provides a can compare each display element's data drive voltage with predetermineeing the voltage to listen luminous control signal, work as when luminous control signal is effective and arbitrary display element's data drive voltage is less than when predetermineeing voltage, control power module stops providing first supply voltage reaches second supply voltage can avoid taking place to be unusually less than when predetermineeing voltage when display element's data drive voltage, the first supply voltage of power module output, second supply voltage produce the condition that the heavy current leads to display panel to be burnt out in display element, can improve display panel's life to avoid causing the conflagration, improved security, the durability of equipment.
It should be noted that each module and unit of the embodiments of the present invention may be implemented by a hardware circuit.
In one possible implementation, the Light Emitting element includes any one or more of an LED (Light Emitting Diode), a MiniLED (Mini Light Emitting Diode), a Micro LED (Micro Light Emitting Diode), and an OLED (Organic Light-Emitting Diode).
The embodiment of the present invention does not limit the number and arrangement of the display units 110 in the display module 10, and those skilled in the art can set the display units as required.
In one example, taking the light emitting element 1120 as an OLED as an example, the OLED can drive the voltage V according to the light emitting control signal EM and the dataSR(otherwise known as original machine drive voltage) determines the operating current.
The various modules of the electronic device are described below by way of example.
Referring to fig. 2, fig. 2 is a block diagram of an electronic device according to an embodiment of the invention.
In one possible implementation, as shown in fig. 2, the control module 30 may include:
a logical AND operation unit 310 for receiving the data driving voltage V of each display unit 110SRAnd the preset voltage VREFAnd a logical AND operation is performed on the comparison result signal P (including P1 to Pk, k being an integer greater than 0) to generate a data driving voltage V at any one of the display cells 110SRLower than a predetermined voltage VREFThe first valid signal PD is output.
In one example, the and logic operation unit 310 may include a logic and gate (&) for performing a logical and operation on the plurality of comparison result signals P inputted, and when any one of the comparison result signals is low level (logic 0), the and logic operation unit 310 may output a low level signal, i.e., the first valid signal PD.
It should be noted that the and logic unit 310 may be disposed inside the display module 10, or may be disposed outside, which is not limited by the embodiment of the present invention.
In one possible implementation, as shown in fig. 2, the control module 30 may include:
the or logic unit 320 is configured to receive the first valid signal PD and the emission control signal EM and perform an or logic operation to output a second valid signal EN when the first valid signal PD and the emission control signal EM are both valid, where the second valid signal EN is used to control the power module 20 to stop providing the first power supply voltage ELVDD and the second power supply voltage ELVSS.
In one example, the or logic unit 320 may include an or logic gate (or) for performing an or logic operation on the first valid signal PD and the emission control signal EM, and outputting the second valid signal EN (low level, i.e., logic 0) when both the first valid signal PD and the emission control signal EM are low level (logic 0).
In one example, if the second active signal EN is low level, the power module 20 may be turned off to stop outputting the first power supply voltage ELVDD and the second power supply voltage ELVSS to the display module, and of course, a switching module may be disposed between the power module 20 and the television module 10 and may be turned off when the second active signal EN is low level, so that the power module 20 stops supplying the first power supply voltage ELVDD and the second power supply voltage ELVSS to the display module 10.
In one example, if the second active signal EN is at a high level, the power supply module 20 may provide the first power supply voltage ELVDD and the second power supply voltage ELVSS to the display module.
In an example, the or logic unit 320 may be provided as a separate device, or may be integrated into other modules, which is not limited to the embodiment of the present invention.
The embodiment of the present invention does not limit the specific implementation manner of the power module 20, and those skilled in the art can select the power implementation in the related art as required.
Referring to fig. 3, fig. 3 is a schematic diagram illustrating a display unit according to an embodiment of the present invention.
In one possible implementation, as shown in fig. 3, the driving circuit 1110 includes a first PMOS (Metal-Oxide-Semiconductor Field-Effect Transistor) Transistor Q1, a second PMOS Transistor Q2, and a third PMOS Transistor Q3, wherein,
the source of the first PMOS transistor Q1 is for receiving the first supply voltage ELVDD,
a gate of the first PMOS transistor Q1 is connected to a gate of the third PMOS transistor Q3 for receiving the emission control signal EM,
a drain of the first PMOS transistor Q1 is connected to a source of the second PMOS transistor Q2 for receiving the data driving voltage VSR，
The drain of the second PMOS transistor Q2 is connected to the source of the third PMOS transistor Q3, and the drain of the third PMOS transistor Q3 is connected to the light emitting element 1120.
In a possible embodiment, as shown in fig. 2, the apparatus further includes a comparing module 60, and the comparing module 60 can receive the data driving voltage V of each driving circuitSRAnd comparing the voltage with a preset voltage to obtain a comparison result signal P.
The embodiment of the utility model provides a do not restrict to the concrete position of comparing module 60, comparing module 60 includes a plurality of comparators Cmp, and each comparator can set up in the display element that corresponds, also can regard as holistic comparison module setting in display module 10's outside, and this the embodiment of the utility model provides a do not restrict.
In one example, as shown in fig. 3, the respective comparators Cmp may be provided inside the display unit, each comparator Cmp corresponding to each display unit 110, wherein,
in one example, as shown in fig. 3, a positive input terminal of the comparator Cmp may be connected to a gate of the second PMOS transistor for receiving the data driving voltage V of the corresponding display unit 110SRThe negative input of each comparator Cmp is used for receiving the input signalThe preset voltage VREFThe comparator Cmp is used for driving the voltage V for the dataSRAnd the preset voltage VREFComparing and outputting a comparison result signal P, wherein the comparison result signal P is output when the data driving voltage V is appliedSRIs lower than the preset voltage VREFThe comparison result signal P is a valid signal.
In a possible embodiment, as shown in fig. 2, the apparatus may further include:
the light emitting driving module 40 is connected to the driving circuit 1110 of each display unit 110, and configured to output the light emitting control signal EM.
In one example, as shown in fig. 2, the light emission driving module 40 may output the light emission control signal EM to each driving circuit 1110 and the logical or operation unit 320.
The embodiment of the present invention does not limit the specific implementation manner of the light-emitting driving module 40, and the light-emitting driving module 40 may be configured as a pulse signal generator or other types of signal generators.
In a possible embodiment, as shown in fig. 2, the apparatus may further include:
a source driving module 50 connected to the driving circuit 1110 of each display unit 110 for receiving the data signal and generating a data driving voltage V of each display unit 110 according to the data signalSR。
In one example, the source driving module 50 may generate a plurality of data driving voltages V according to a data signal provided by a timing controller (not shown) or other devicesSREach data driving voltage is input to a driving circuit of each display unit of the display module 10 to realize driving of the light emitting element 1120.
The embodiment of the present invention does not limit the specific implementation manner of the source driving module 50, and the aforementioned timing controller or other devices providing data signals may also be disposed in the source driving module 50, and of course, may also be disposed outside the source driving module 50, and the source driving module 50 may be implemented by using a source driving chip in the related art, the embodiment of the present invention may select a suitable source driving chip as required, for example, if the size of the display module is smaller, it may be implemented by using one or a small number of source driving chips; if the size of the display module is larger, a plurality of source driving chips can be selected to jointly drive the source of the display module according to the requirement.
The utility model discloses electronic device can listen data drive voltage VSRAnd the variation of the emission control signal EM if the data driving voltage V of a certain display cellSRIn case of abnormal conditions, e.g. below a predetermined voltage VREFThe and logic unit 310 may output a comparison result signal of a low level to the or logic unit 320. If the emission control signal EM is a high logic 1, the channels of the first PMOS transistor Q1 and the third PMOS transistor Q3 are disconnected, so that no large current is generated in the display unit even though the power module 20 still normally outputs the positive supply voltage ELVDD and the reference ground voltage ELVSS; on the contrary, if the potential of the light-emitting control signal EM is logic 0, since the channels of the first PMOS transistor Q1 and the third PMOS transistor Q3 are turned on, if the power module 20 still normally outputs the positive supply voltage ELVDD and the reference ground voltage ELVSS, the display unit 110 may generate a large current, so the or operation unit 320 performs a logical or operation on the light-emitting control signal EM of logic 0 and the first active signal (0or 0 equals to 0), and therefore the or operation unit 320 outputs the second active signal EN as a logic 0 low level, so that the power module 20 turns off the positive supply voltage ELVDD and the reference ground voltage ELVSS, thereby preventing the display module 10 from generating a large current and being burned out, and achieving the purpose of protecting the display module 10.
The embodiment of the utility model provides a can compare each display element's data drive voltage with predetermineeing the voltage to listen luminous control signal, work as when luminous control signal is effective and arbitrary display element's data drive voltage is less than when predetermineeing voltage, control power module stops providing first supply voltage reaches second supply voltage can avoid taking place to be unusually less than when predetermineeing voltage when display element's data drive voltage, the first supply voltage of power module output, second supply voltage produce the condition that the heavy current leads to display panel to be burnt out in display element, can improve display panel's life to avoid causing the conflagration, improved security, the durability of equipment.
While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (9)
1. An electronic device, comprising:
the display module comprises a plurality of display units, each display unit comprises a driving circuit and a light-emitting element, and the driving circuit is used for receiving a light-emitting control signal, a data driving voltage, a first power supply voltage and a second power supply voltage so as to drive the light-emitting elements to emit light;
a power module, configured to provide the first supply voltage and the second supply voltage, where the first supply voltage is higher than the second supply voltage;
the control module is connected to the display module and the power module and used for: and when the light-emitting control signal is effective and the data driving voltage of any display unit is lower than a preset voltage, controlling the power supply module to stop providing the first power supply voltage and the second power supply voltage.
2. The apparatus of claim 1, wherein the control module comprises:
the logic and operation unit is used for receiving a comparison result signal of the data driving voltage of each display unit and the preset voltage, executing logic and operation and outputting a first effective signal when the data driving voltage of any display unit is lower than the preset voltage;
and the logic or operation unit is used for receiving the first effective signal and the light-emitting control signal and executing logic or operation so as to output a second effective signal when the first effective signal and the light-emitting control signal are both effective, wherein the second effective signal is used for controlling the power supply module to stop providing the first power supply voltage and the second power supply voltage.
3. The apparatus of claim 1, further comprising:
and the light-emitting driving module is connected with the driving circuit of each display unit and used for outputting the light-emitting control signal.
4. The apparatus of claim 1, further comprising:
and the source electrode driving module is connected with the driving circuit of each display unit and used for receiving the data signal and generating the data driving voltage of each display unit according to the data signal.
5. The apparatus of claim 1, wherein the driver circuit comprises a first PMOS transistor, a second PMOS transistor, a third PMOS transistor, wherein,
a source of the first PMOS transistor is to receive the first supply voltage,
a gate of the first PMOS transistor is connected to a gate of the third PMOS transistor for receiving the light emission control signal,
a drain of the first PMOS transistor is connected to a source of the second PMOS transistor for receiving the data driving voltage,
the drain of the second PMOS transistor is connected to the source of the third PMOS transistor,
the drain of the third PMOS transistor is connected to the light emitting element.
6. The apparatus of claim 1, further comprising a comparison module comprising a plurality of comparators, each comparator corresponding to each display unit, wherein,
the positive input end of any comparator is used for receiving the data driving voltage of the corresponding display unit, the negative input end of each comparator is used for receiving the preset voltage, the comparator is used for comparing the data driving voltage with the preset voltage and outputting a comparison result signal, and when the data driving voltage is lower than the preset voltage, the comparison result signal is an effective signal.
7. The apparatus of claim 1, wherein the light emitting element comprises any one of an organic light emitting diode, a quantum dot light emitting diode, a mini light emitting diode, and a micro light emitting diode.
8. An electronic device, characterized in that the electronic device comprises an electronic apparatus according to any of claims 1-7.
9. The electronic device of claim 8, wherein the electronic device comprises a display, a smartphone, or a portable device.
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| CN202120753768.1U CN215182991U (en) | 2021-04-13 | 2021-04-13 | Electronic device and electronic apparatus |
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| CN202120753768.1U CN215182991U (en) | 2021-04-13 | 2021-04-13 | Electronic device and electronic apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113035127A (en) * | 2021-04-13 | 2021-06-25 | 北京集创北方科技股份有限公司 | Electronic device and electronic apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113035127A (en) * | 2021-04-13 | 2021-06-25 | 北京集创北方科技股份有限公司 | Electronic device and electronic apparatus |
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