Electronic devices and electronic equipment

Abstract

The present disclosure relates to an electronic device and an electronic device, the electronic device comprising: a display module, comprising a plurality of display units, each display unit comprising a driving circuit and a light-emitting element, the driving circuit being used to receive a light-emitting control signal, a data driving voltage, a first power supply voltage and a second power supply voltage to drive the light-emitting element to emit light; a power supply module being used to provide the first power supply voltage and the second power supply voltage, wherein the first power supply voltage is higher than the second power supply voltage; a control module being connected to the display module and the power supply module, and being used to: when the light-emitting control signal is valid and the data driving voltage of any display unit is lower than a preset voltage, control the power supply module to stop providing the first power supply voltage and the second power supply voltage. The embodiments of the present disclosure can avoid the situation where a large current is generated in the display unit and the display panel is burned, thereby improving the safety and durability of the device.

Description

Technical Field

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

[0002] With the continuous development of science and technology and the continuous improvement of people's living standards, various types of electronic devices with display functions are becoming more and more popular. However, current display panels use OLED as the light-emitting element. When the data voltage input of OLED has a signal abnormality, such as poor conduction or breakage of the signal line, and does not reach the normal potential, it is very likely to generate a large current and cause the display panel to burn. Summary of the invention

[0003] In view of this, the present disclosure provides an electronic device, comprising:

[0004] A display module, comprising a plurality of display units, each display unit comprising a driving circuit and a light-emitting element, wherein the driving circuit is used to receive a light-emitting control signal, a data driving voltage, a first power supply voltage and a second power supply voltage to drive the light-emitting element to emit light;

[0005] a power supply module, configured to provide the first supply voltage and the second supply voltage, wherein the first supply voltage is higher than the second supply voltage;

[0006] The control module is connected to the display module and the power module, and is used to control the power module to stop providing the first power supply voltage and the second power supply voltage when the light emitting control signal is valid and the data driving voltage of any display unit is lower than a preset voltage.

[0007] In a possible implementation, the control module includes:

[0008] A logic and operation unit, used for receiving a comparison result signal between the data driving voltage of each display unit and the preset voltage and performing a logic and operation, and outputting a first valid signal when the data driving voltage of any display unit is lower than the preset voltage;

[0009] A logic OR operation unit is used to receive the first valid signal and the light-emitting control signal and perform a logic OR operation to output a second valid signal when the first valid signal and the light-emitting control signal are both valid, and the second valid signal is used to control the power supply module to stop providing the first supply voltage and the second supply voltage.

[0010] In a possible implementation, the device further includes:

[0011] The light-emitting driving module is connected to the driving circuit of each display unit and is used to output the light-emitting control signal.

[0012] In a possible implementation, the device further includes:

[0013] The source driving module is connected to the driving circuit of each display unit, and is used to receive the data signal and generate the data driving voltage of each display unit according to the data signal.

[0014] In a possible implementation, the driving circuit includes a first PMOS transistor, a second PMOS transistor, and a third PMOS transistor, wherein:

[0015] The source of the first PMOS transistor is used to receive the first supply voltage,

[0016] The gate of the first PMOS transistor is connected to the gate of the third PMOS transistor and is used to receive the light emitting control signal.

[0017] The drain of the first PMOS transistor is connected to the source of the second PMOS transistor and is used to receive the data driving voltage.

[0018] 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.

[0019] In a possible implementation, the device further includes a comparison module, the comparison module includes a plurality of comparators, each comparator corresponds to each display unit, wherein:

[0020] The positive input terminal of any comparator is used to receive the data driving voltage of the corresponding display unit, and the negative input terminal of each comparator is used to receive the preset voltage. The comparator is used to compare the data driving voltage with the preset voltage and output a comparison result signal, wherein when the data driving voltage is lower than the preset voltage, the comparison result signal is a valid signal.

[0021] In a possible implementation, 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.

[0022] According to another aspect of the present disclosure, an electronic device is provided, wherein the electronic device comprises the electronic apparatus.

[0023] In a possible implementation, the electronic device includes a display, a smart phone, or a portable device.

[0024] The disclosed embodiment can compare the data driving voltage of each display unit with a preset voltage and detect a light-emitting control signal. When the light-emitting control signal is valid and the data driving voltage of any display unit is lower than the preset voltage, the power module is controlled to stop providing the first power supply voltage and the second power supply voltage. This can avoid the situation where the first power supply voltage and the second power supply voltage output by the power module generate a large current in the display unit when the data driving voltage of the display unit is abnormally lower than the preset voltage, causing the display panel to be burned. This can increase the service life of the display panel, avoid causing a fire, and improve the safety and durability of the equipment.

[0025] Further features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the disclosure and, together with the description, serve to explain the principles of the disclosure.

[0027] Figure 1 A block diagram of an electronic device according to an embodiment of the present disclosure is shown.

[0028] Figure 2 A block diagram of an electronic device according to an embodiment of the present disclosure is shown.

[0029] Figure 3 A schematic diagram of a display unit according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0030] Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0031] In the description of the present disclosure, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0034] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0035] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present disclosure can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present disclosure.

[0036] See also Figure 1 , Figure 1 A block diagram of an electronic device according to an embodiment of the present disclosure is shown.

[0037] like Figure 1 As shown, the electronic device includes:

[0038] The display module 10 includes a plurality of display units 110. Each display unit 110 includes a driving circuit 1110 and a light emitting element 1120. The driving circuit 1110 is used to receive a light emitting control signal EM and a data driving voltage V SR , a first power supply voltage ELVDD and a second power supply voltage ELVSS to drive the light emitting element 1120 to emit light;

[0039] A power supply module 20, configured to provide the first power supply voltage ELVDD and the second power supply voltage ELVSS, wherein the first power supply voltage ELVDD is higher than the second power supply voltage ELVSS;

[0040] The control module 30 is connected to the display module 10 and the power module 20 and is used to: when the light emitting control signal EM is valid and the data driving voltage V SR Lower than the preset voltage V REF When the power module 20 stops providing the first power supply voltage ELVDD and the second power supply voltage ELVSS.

[0041] The disclosed embodiment can compare the data driving voltage of each display unit with a preset voltage and detect a light-emitting control signal. When the light-emitting control signal is valid and the data driving voltage of any display unit is lower than the preset voltage, the power module is controlled to stop providing the first power supply voltage and the second power supply voltage. This can avoid the situation where the first power supply voltage and the second power supply voltage output by the power module generate a large current in the display unit when the data driving voltage of the display unit is abnormally lower than the preset voltage, causing the display panel to be burned. This can increase the service life of the display panel, avoid causing a fire, and improve the safety and durability of the equipment.

[0042] It should be noted that each module and unit of the embodiment of the present disclosure can be implemented by a hardware circuit.

[0043] In one possible implementation, the light-emitting element includes any one or more of LED (Light Emitting Diode), MiniLED (Mini Light Emitting Diode), MicroLED (MicroLight Emitting Diode), and OLED (Organic Light-Emitting Diode).

[0044] The embodiment of the present disclosure 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 them as needed.

[0045] In an example, taking the light emitting element 1120 as an OLED, the OLED can be driven according to the light emitting control signal EM and the data driving voltage V SR (or called original machine driving voltage) determines the operating current.

[0046] The following is an exemplary introduction to each module of the electronic device.

[0047] See also Figure 2 , Figure 2 A block diagram of an electronic device according to an embodiment of the present disclosure is shown.

[0048] In a possible implementation, Figure 2 As shown, the control module 30 may include:

[0049] The logic and operation unit 310 is used to receive the data driving voltage V of each display unit 110. SR With the preset voltage V REF The comparison result signal P (including P1 to Pk, k is an integer greater than 0) is used to perform a logic AND operation. SR Lower than the preset voltage V REF The first valid signal PD is outputted at this time.

[0050] In an example, the logic AND operation unit 310 may include a logic AND gate (&) for performing a logic AND operation on multiple input comparison result signals P. When any comparison result signal is at a low level (logic 0), the logic AND operation unit 310 may output a low level signal, i.e., a first valid signal PD.

[0051] It should be noted that the logic and operation unit 310 can be arranged inside the display module 10, and of course can also be arranged outside, which is not limited in the embodiment of the present disclosure.

[0052] In a possible implementation, Figure 2 As shown, the control module 30 may include:

[0053] The logic OR operation unit 320 is used to receive the first valid signal PD and the light-emitting control signal EM and perform a logic OR operation to output a second valid signal EN when the first valid signal PD and the light-emitting control signal EM are both valid, and the second valid signal EN is used to control the power module 20 to stop providing the first supply voltage ELVDD and the second supply voltage ELVSS.

[0054] In one example, the logic OR operation unit 320 may include a logic OR gate (or) for performing a logic OR operation on the first valid signal PD and the light emitting control signal EM, and when the first valid signal PD and the light emitting control signal EM are both at a low level (logic 0), a second valid signal EN (low level, i.e., logic 0) is output.

[0055] In one example, if the second valid signal EN is at a low level, the power module 20 can be turned off to stop outputting the first power supply voltage ELVDD and the second power supply voltage ELVSS to the display module. Of course, a switch module can be configured between the power module 20 and the TV module 10. When the second valid signal EN is at a low level, the switch module can be disconnected so that the power module 20 stops providing the first power supply voltage ELVDD and the second power supply voltage ELVSS to the display module 10.

[0056] In an example, if the second valid signal EN is at a high level, the power module 20 may provide the first power supply voltage ELVDD and the second power supply voltage ELVSS to the display module.

[0057] In an example, the logic or operation unit 320 may be configured as a separate device, or may be integrated into other modules, which is not limited in the embodiments of the present disclosure.

[0058] The embodiment of the present disclosure does not limit the specific implementation of the power module 20, and those skilled in the art can select a power implementation in the relevant technology as needed.

[0059] See also Figure 3 , Figure 3 A schematic diagram of a display unit according to an embodiment of the present disclosure is shown.

[0060] In a possible implementation, Figure 3 As shown, the driving circuit 1110 includes a first PMOS (P-type metal-oxide semiconductor field-effect transistor, Metal-Oxide-Semiconductor Field-EffectTransistor) transistor Q1, a second PMOS transistor Q2, and a third PMOS transistor Q3, wherein:

[0061] The source of the first PMOS transistor Q1 is used to receive the first power supply voltage ELVDD.

[0062] The gate of the first PMOS transistor Q1 is connected to the gate of the third PMOS transistor Q3 and is used to receive the light emitting control signal EM.

[0063] The drain of the first PMOS transistor Q1 is connected to the source of the second PMOS transistor Q2 and is used to receive the data driving voltage V SR ,

[0064] 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 .

[0065] In a possible implementation, Figure 2 As shown, the device also includes a comparison module 60, which can receive the data driving voltage V of each driving circuit. SR and compares it with the preset voltage to obtain a comparison result signal P.

[0066] The embodiment of the present disclosure does not limit the specific position of the comparison module 60. The comparison module 60 includes multiple comparators Cmp. Each comparator can be set in a corresponding display unit or can be set as a whole comparison module outside the display module 10. The embodiment of the present disclosure does not limit this.

[0067] In one example, if Figure 3 As shown, each comparator Cmp can be arranged inside the display unit, and each comparator Cmp corresponds to each display unit 110, wherein:

[0068] In one example, if Figure 3 As shown, the positive input terminal of the comparator Cmp can be connected to the gate of the second PMOS transistor to receive the data driving voltage V corresponding to the display unit 110. SR The negative input terminal of each comparator Cmp is used to receive the preset voltage V REF The comparator Cmp is used to compare the data drive voltage V SR and the preset voltage V REF Compare and output the comparison result signal P, wherein when the data drive voltage V SR is lower than the preset voltage V REF , the comparison result signal P is a valid signal.

[0069] In a possible implementation, Figure 2 As shown, the device may also include:

[0070] The light-emitting driving module 40 is connected to the driving circuit 1110 of each display unit 110 and is used to output the light-emitting control signal EM.

[0071] In one example, if Figure 2 As shown, the light-emitting driving module 40 can output a light-emitting control signal EM to each driving circuit 1110 and the logic OR operation unit 320 .

[0072] The embodiment of the present disclosure does not limit the specific implementation 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.

[0073] In a possible implementation, Figure 2 As shown, the device may also include:

[0074] The source driving module 50 is connected to the driving circuit 1110 of each display unit 110, and is used to receive the data signal and generate the data driving voltage V of each display unit 110 according to the data signal. SR .

[0075] In one example, the source driving module 50 can generate a plurality of data driving voltages V according to a data signal provided by a timing controller (not shown) or other devices. SR , each data driving voltage is input into the driving circuit of each display unit of the display module 10 to realize driving of the light emitting element 1120 .

[0076] The embodiment of the present disclosure does not limit the specific implementation method of the source driver module 50. The aforementioned timing controller or other device providing data signals may also be arranged in the source driver module 50. Of course, it may also be arranged outside the source driver module 50. The source driver module 50 may be implemented using a source driver chip in the related technology. The embodiment of the present disclosure may select a suitable source driver chip as needed. For example, if the size of the display module is small, it may be implemented using one or a small number of source driver chips; if the size of the display module is large, multiple source driver chips may be selected as needed to jointly perform source drive on the display module.

[0077] The electronic device of the embodiment of the present disclosure can detect the data driving voltage V SR and the change of the light emitting control signal EM, if the data driving voltage V SR When an abnormal condition occurs, such as when the voltage is lower than the preset voltage V REF , the logic AND operation unit 310 can output a low-level comparison result signal to the logic OR operation unit 320. If the light emitting control signal EM is a high level logic 1 at this time, the channels of the first PMOS transistor Q1 and the third PMOS transistor Q3 will be disconnected. Therefore, even if the power module 20 still outputs the positive supply voltage ELVDD and the reference ground voltage ELVSS normally, the display unit will not generate a large current. On the contrary, if the potential of the light emitting control signal EM is a logic 0 at this time, since the channels of the first PMOS transistor Q1 and the third PMOS transistor Q3 will be turned on, if the power module 20 still outputs the positive supply voltage ELVDD and the reference ground voltage ELVSS normally, the display unit 110 will have the risk of generating a large current. Therefore, the logic OR operation unit 320 performs a logic OR operation (0or 0=0) on the light emitting control signal EM of logic 0 and the first valid signal. Therefore, the logic OR operation unit 320 outputs the second valid signal EN of 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, so as to achieve the purpose of protecting the display module 10.

[0078] The disclosed embodiment can compare the data driving voltage of each display unit with a preset voltage and detect a light-emitting control signal. When the light-emitting control signal is valid and the data driving voltage of any display unit is lower than the preset voltage, the power module is controlled to stop providing the first power supply voltage and the second power supply voltage. This can avoid the situation where the first power supply voltage and the second power supply voltage output by the power module generate a large current in the display unit when the data driving voltage of the display unit is abnormally lower than the preset voltage, causing the display panel to be burned. This can increase the service life of the display panel, avoid causing a fire, and improve the safety and durability of the equipment.

[0079] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An electronic device, characterized in that: The electronic device comprises: A display module, comprising a plurality of display units, each display unit comprising a driving circuit and a light-emitting element, wherein the driving circuit is used to receive a light-emitting control signal, a data driving voltage, a first power supply voltage and a second power supply voltage to drive the light-emitting element to emit light; a power supply module, configured to provide the first supply voltage and the second supply voltage, wherein 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 is used to control the power module to stop providing the first power supply voltage and the second power supply voltage when the light emitting control signal is valid and the data driving voltage of any display unit is lower than a preset voltage.

2. The device according to claim 1, characterized in that The control module comprises: A logic and operation unit, used for receiving a comparison result signal between the data driving voltage of each display unit and the preset voltage and performing a logic and operation, and outputting a first valid signal when the data driving voltage of any display unit is lower than the preset voltage; A logic OR operation unit is used to receive the first valid signal and the light-emitting control signal and perform a logic OR operation to output a second valid signal when the first valid signal and the light-emitting control signal are both valid, and the second valid signal is used to control the power supply module to stop providing the first supply voltage and the second supply voltage.

3. The device according to claim 1, characterized in that The device also includes: The light-emitting driving module is connected to the driving circuit of each display unit and is used to output the light-emitting control signal.

4. The device according to claim 1, characterized in that The device also includes: The source driving module is connected to the driving circuit of each display unit, and is used to receive the data signal and generate the data driving voltage of each display unit according to the data signal.

5. The device according to claim 1, characterized in that The driving circuit includes a first PMOS transistor, a second PMOS transistor, and a third PMOS transistor, wherein: The source of the first PMOS transistor is used to receive the first supply voltage, The gate of the first PMOS transistor is connected to the gate of the third PMOS transistor and is used to receive the light emitting control signal. The drain of the first PMOS transistor is connected to the source of the second PMOS transistor and is used to receive the data driving voltage. The drain of the second PMOS transistor is connected to the source of the third PMOS transistor, A drain of the third PMOS transistor is connected to the light emitting element.

6. The device according to claim 1, characterized in that The device further comprises a comparison module, wherein the comparison module comprises a plurality of comparators, each comparator corresponding to each display unit, wherein: The positive input terminal of any comparator is used to receive the data driving voltage of the corresponding display unit, and the negative input terminal of each comparator is used to receive the preset voltage. The comparator is used to compare the data driving voltage with the preset voltage and output a comparison result signal, wherein when the data driving voltage is lower than the preset voltage, the comparison result signal is a valid signal.

7. The device according to claim 1, characterized in that 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.

8. An electronic device, characterized in that: The electronic device comprises the electronic device according to any one of claims 1 to 7.

9. The electronic device according to claim 8, characterized in that: The electronic device includes a display, a smart phone or a portable device.

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