Display apparatus and electronic device

Abstract

A display apparatus (12) and an electronic device (1), which relate to the technical field of displays. The display apparatus (12) comprises a display panel (100), a power management circuit (300) and a first circuit board (200). The display panel (100) and the power management circuit (300) are connected by means of the first circuit board (200). The display panel (100) comprises a first gate driving circuit (111); the power management circuit (300) comprises a first power port (VD1) and a second power port (VD2); and the first circuit board (200) comprises a first electrically conductive assembly (211) and a second electrically conductive assembly (212). The first electrically conductive assembly (211) is connected between the first gate driving circuit (111) and the first power port (VD1), and the second electrically conductive assembly (212) is connected between the first gate driving circuit (111) and the second power port (VD2). Thus, a voltage output by the power management circuit (300) is directly input to the first gate driving circuit (111) by means of the first electrically conductive assembly (211) and the second electrically conductive assembly (212), separately, without having to additionally pass through a low dropout regulator (LDO) in a display driving circuit (120), thereby reducing voltage loss on a negative power voltage (VGL) power supply route, and improving power supply efficiency.

Description

A display device and electronic device

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411622603.5, filed on November 13, 2024, entitled "A Display Device and Electronic Device", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of display technology, and more particularly to a display device and electronic device. Background Technology

[0004] With the rapid development of display technology, display panels are increasingly moving towards higher integration and lower costs. Among these advancements, the Gate Driver on Array (GOA) technology, which fabricates thin-film transistors (TFTs) on the display panel to form the gate driver circuit that drives the panel, enables narrow bezels. During operation, the gate driver circuit requires both positive and negative power supply voltages from an external source. However, current power supply paths providing these voltages suffer from significant voltage drops and low efficiency. Summary of the Invention

[0005] This application provides a display device and an electronic device to reduce voltage loss in the power supply paths of positive and negative power supply voltages and improve power supply efficiency.

[0006] In a first aspect, embodiments of this application provide a display device, which includes a display panel, a power management circuit, and a first circuit board. The display panel and the power management circuit are connected via the first circuit board. The display panel includes a first gate driving circuit, the power supply circuit includes a first power port and a second power port, and the first circuit board includes a first conductive component and a second conductive component.

[0007] In this circuit, the first end of the first conductive component is connected to the first gate driving circuit, and the second end of the first conductive component is connected to the first power supply port. Therefore, the voltage output from the power management circuit can be directly input to the first gate driving circuit through the first conductive component, without needing to pass through the low dropout regulator (LDO) in the display driving circuit. This reduces voltage loss in the positive power supply path and improves power supply efficiency.

[0008] Furthermore, the first end of the second conductive component is connected to the first gate driving circuit, and the second end of the second conductive component is connected to the second power supply port. This allows the voltage output from the power management circuit to be directly input to the first gate driving circuit through the second conductive component, without needing to pass through the LDO in the display driving circuit. This reduces voltage loss in the negative power supply path and improves power supply efficiency.

[0009] In some possible implementations, the first power port is used to output a positive power supply voltage, and the second power supply port is used to output a negative power supply voltage.

[0010] In some possible implementations, the power management circuit includes a voltage regulator circuit connected to a first power port and a second power port, respectively. Thus, by integrating the voltage regulator circuit into the power management circuit, the fabrication process of the voltage regulator circuit is the same as that of the power management circuit, resulting in a voltage regulator circuit that not only achieves voltage regulation but also has a lower voltage drop.

[0011] In some possible implementations, the voltage regulator circuit includes a first voltage regulator and a second voltage regulator, with the first voltage regulator connected to a first power supply port and the second voltage regulator connected to a second power supply port. This allows the first power supply port and the second power supply port to perform voltage regulation independently.

[0012] In some possible implementations, the first regulator includes, but is not limited to, an LDO.

[0013] In some possible implementations, the second regulator includes, but is not limited to, an LDO.

[0014] In some possible implementations, the first circuit board includes, but is not limited to, a flexible printed circuit (FPC).

[0015] In some possible implementations, either the first conductive component or the second conductive component includes one or a combination of a resistor and a wire. This makes the implementation of the first and second conductive components relatively simple, reducing design complexity and production costs.

[0016] In some possible implementations, the resistance value of the resistor is 0Ω to 10Ω. For example, the resistance value of the resistor can be 0Ω, 1Ω, 2Ω, 4Ω, 5Ω, 8Ω, 10Ω, etc.

[0017] For example, a resistor can be set as a zero-ohm resistor, also known as a bridging resistor. Its resistance is not zero, but rather an ideal resistor whose actual resistance is very close to zero ohms. Therefore, using a zero-ohm resistor minimizes voltage drop, further reducing voltage loss and improving power supply efficiency. Furthermore, since the technology for zero-ohm resistors is relatively mature, implementing them is relatively simple, thus reducing design complexity and production costs. Also, compared to ordinary resistors, which have a fixed resistance value, zero-ohm resistors, although close to zero resistance, still have a certain tolerance range and accuracy level.

[0018] In some possible implementations, the first circuit board further includes a first capacitor connected to a first terminal of the first conductive component. This first capacitor can thus improve the voltage stability of the power supply path in the first circuit board.

[0019] In some possible implementations, the first circuit board further includes a second capacitor connected to a second terminal of the first conductive component. This second capacitor can thus improve the voltage stability of the power supply path within the first circuit board.

[0020] In some possible implementations, the first circuit board further includes a third capacitor connected to a first terminal of the second conductive component. This third capacitor can thus improve the voltage stability of the power supply path within the first circuit board.

[0021] In some possible implementations, the first circuit board further includes a fourth capacitor connected to a second terminal of the second conductive component. This fourth capacitor can thus improve the voltage stability of the power supply path within the first circuit board.

[0022] In some possible implementations, the display panel further includes a display driving circuit, and the second end of the first conductive component and the second end of the second conductive component are respectively connected to the display driving circuit so that the first power port and the second power port are connected to the display driving circuit to supply power to the display driving circuit.

[0023] In some possible implementations, the first end of the first conductive component is also connected to the display driving circuit, thereby reducing costs without having to make additional changes to the structure and connection relationship between the first circuit board and the display panel.

[0024] In some possible implementations, the first end of the second conductive component is also connected to the display driving circuit, thereby reducing costs without having to make additional changes to the structure and connection relationship between the first circuit board and the display panel.

[0025] In some possible implementations, the display driving circuit includes a third voltage regulator and a fourth voltage regulator. A first terminal of a first conductive component is connected to a first terminal of the third voltage regulator, a second terminal of the first conductive component is connected to a second terminal of the third voltage regulator, a first terminal of a second conductive component is connected to a first terminal of the fourth voltage regulator, and a second terminal of the second conductive component is connected to a second terminal of the fourth voltage regulator. This allows the display driving circuit to also have a voltage stabilization function. In this embodiment, since using the first and second conductive components as the power supply paths reduces voltage loss, when the display driving circuit integrates the third and fourth voltage regulators, the third and fourth voltage regulators can be set to a high-impedance state, i.e., they are not used as power supply paths, thus reducing power consumption.

[0026] In some possible implementations, the third regulator includes, but is not limited to, an LDO.

[0027] In some possible implementations, the fourth regulator includes, but is not limited to, an LDO.

[0028] In some possible implementations, the power supply circuit further includes an nth power port, and the first circuit board further includes an nth conductive component. The first end of the nth conductive component is connected to the nth power port, and the second end of the nth conductive component is connected to the first gate drive circuit, where n is greater than or equal to 3. Thus, power supply of three or more voltages can be achieved, allowing for flexible design of the number of power supply voltages.

[0029] In some possible implementations, the display panel further includes a second gate driving circuit, and the first end of the first conductive component and the first end of the second conductive component are respectively connected to the second gate driving circuit. This enables bilateral driving.

[0030] For example, the first gate driving circuit and the second gate driving circuit can be respectively disposed on both sides of the display area of ​​the display panel.

[0031] In some possible implementations, a first end of the first conductive component is connected to a first gate drive circuit via a pad so that voltage can be input to the first gate drive circuit.

[0032] In some possible implementations, the first end of the second conductive component is connected to the first gate drive circuit via a pad so that voltage can be input to the first gate drive circuit.

[0033] In some possible implementations, the display device further includes a second circuit board connected to the first circuit board via a connector. A power management circuit is disposed on the second circuit board and connected to the first circuit board via a connector. This allows the first and second power ports of the power management circuit to be electrically connected to the first and second conductive components, respectively.

[0034] In some possible implementations, the second circuit board includes, but is not limited to, a printed circuit board (PCB).

[0035] Secondly, embodiments of this application also provide an electronic device, which includes a housing and a display device mounted on the housing. The display device is the same as that described in the first aspect or in the embodiments of the first aspect. Furthermore, since the aforementioned display device has good performance, the electronic device including the aforementioned display device also has good performance. Moreover, the principle by which this electronic device solves the problem is similar to that of the aforementioned display device; therefore, the implementation method and technical effects of this electronic device can be referred to the implementation method and technical effects of the aforementioned display device, and repeated details will not be elaborated further. Attached Figure Description

[0036] Figure 1 is a schematic diagram of an electronic device provided in an embodiment of this application;

[0037] Figure 2A is a schematic diagram of a display device provided in an embodiment of this application;

[0038] Figure 2B is a schematic diagram of another structure of the display device provided in the embodiment of this application;

[0039] Figure 3 is a structural block diagram of the display driving circuit and power management circuit in the prior art;

[0040] Figure 4 is a schematic diagram of another structure of the display device provided in an embodiment of this application;

[0041] Figure 5A is a schematic diagram of a power management circuit provided in an embodiment of this application;

[0042] Figure 5B is a schematic diagram of another structure of the power management circuit provided in the embodiment of this application;

[0043] Figure 6 is a schematic diagram of another structure of the display device provided in an embodiment of this application;

[0044] Figure 7 is a schematic diagram of another structure of the display device provided in an embodiment of this application;

[0045] Figure 8 is a schematic diagram of another structure of the display device provided in an embodiment of this application;

[0046] Figure 9 is a schematic diagram of another structure of the display device provided in an embodiment of this application;

[0047] Figure 10 is a schematic diagram of another structure of the display device provided in the embodiment of this application.

[0048] Reference numerals: 1-Electronic device; 11-Housing; 12-Display device; 100-Display panel; 111-First gate driving circuit; 112-Second gate driving circuit; 120-Display driving circuit; 121-Timing generation circuit; 122a-Third voltage regulator; 122b-Fourth voltage regulator; 200-First circuit board; 211-First conductive component; 212-Second conductive component; 213-Third conductive component; 214-Fourth conductive component; 300-Power management circuit; 311-First power supply voltage generation circuit; 312-Second power supply voltage generation circuit; 320-Voltage regulator circuit; 321-First voltage regulator; 322-Second voltage regulator Voltage regulator; 400 - Second circuit board; 510 / 511 / 512 - Pads; 520 - Connector; 521 - Plug; 522 - Socket; 22a - Positive power supply CP; 22b - Negative power supply CP; 23a - Positive power supply LDO; 23b - Negative power supply LDO; VGH - Positive power supply voltage; VGL - Negative power supply voltage; VD1 - First power supply port; VD2 - Second power supply port; VD3 - Third power supply port; VD4 - Fourth power supply port; R1 / R2 / R3 / R4 - Resistors; C1 - First capacitor; C2 - Second capacitor; C3 - Third capacitor; C4 - Fourth capacitor; L1 / L2 - Wires; AA - Display area. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The specific operational methods in the method embodiments can also be applied to the device embodiments or system embodiments. It should be noted that in the description of this application, "multiple" can be understood as "at least two". Furthermore, it should be understood that in the description of this application, terms such as "first" and "second" are used only for distinguishing purposes and should not be construed as indicating or implying relative importance, nor as indicating or implying order.

[0050] It should be noted that in the embodiments of this application, "connection" refers to electrical connection. The connection between two electrical components can be a direct or indirect connection between the two electrical components. For example, the connection between A and B can be a direct connection between A and B, or an indirect connection between A and B through one or more other electrical components, such as the connection between A and B. Alternatively, it can be a direct connection between A and C, a direct connection between C and B, with A and B connected through C. Furthermore, in this application, unless otherwise explicitly specified and limited, the terms "connected," "linked," "set up," etc., should be interpreted broadly. 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 also refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0051] It should be noted that the same reference numerals in the accompanying drawings of this application denote the same or similar structures, and therefore repeated descriptions of them will be omitted. Terms expressing position and direction described in this application are illustrative based on the accompanying drawings, but may be modified as needed, and all modifications are included within the scope of protection of this application. The accompanying drawings of this application are for illustrating relative positional relationships only and do not represent actual scale.

[0052] The display device provided in this application embodiment can be applied to electronic devices with display functions. Electronic devices include, for example, consumer electronics, home electronics, automotive electronics, and financial terminal electronics. Consumer electronics include, for example, mobile phones, tablets, laptops, e-readers, personal computers (PCs), personal digital assistants (PDAs), desktop monitors, smart wearable products (e.g., smartwatches, smart bracelets), virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, and drones. Home electronics include, for example, smart door locks, televisions, remote controls, refrigerators, and small household appliances (e.g., soymilk makers, robot vacuum cleaners). Automotive electronics include, for example, in-vehicle displays. Financial terminal products include, for example, automated teller machines (ATMs) and self-service terminals.

[0053] For ease of explanation, a mobile phone is used as an example for illustration. Figure 1 illustrates a schematic diagram of an electronic device provided in an embodiment of this application. Referring to Figure 1, the electronic device 1 may include a housing 11 and a display device 12, with the display device 12 connected to the housing 11. Exemplarily, the display device 12 is fixedly mounted on the housing 11, and the housing 11 has a receiving cavity. Components such as the circuit board, electronic components, camera module, processor, and battery in the display device 12 can all be installed within the receiving cavity of the housing 11. Exemplarily, the housing 11 may include a middle frame and a back cover. The middle frame and back cover can be a separate structure or an integrated structure; this embodiment of the application does not impose specific limitations. Furthermore, the housing 11 may be made of materials such as metal (e.g., aluminum alloy, titanium alloy, and stainless steel), plastic (e.g., acrylonitrile-butadiene-styrene, polycarbonate, and polypropylene), or glass (e.g., anti-glare glass) to meet the requirements of wear resistance, impact resistance, corrosion resistance, and aesthetics of the electronic device 1.

[0054] Figure 2A illustrates a schematic diagram of one structure of the display device provided in an embodiment of this application, and Figure 2B illustrates another schematic diagram of the display device provided in an embodiment of this application. Referring to Figures 2A and 2B, the display device 12 may include a display panel 100, which is used to display images. Exemplarily, the display panel 100 may be an organic light-emitting diode (OLED) display panel, a quantum dot light-emitting diode (QLED) display panel, a micro light-emitting diode (Micro LED) display panel, a mini light-emitting diode (Mini LED) display panel, or a light-emitting diode (LED) display panel, etc.

[0055] The display panel 100 has a display area AA and a bezel area. The display area AA may include multiple pixel units arranged in an array. Each pixel unit includes multiple sub-pixels. Each sub-pixel may have a pixel circuit and a light-emitting element. The pixel circuit is used to drive the light-emitting element to emit light. The light-emitting element may be one or more of OLED, QLED, Micro LED, Mini LED, and LED.

[0056] The display panel 100 may have a display driving circuit 120 in its bezel area. The display driving circuit 120 can drive the display panel 100 to operate, enabling the display panel 100 to perform a display function. Exemplarily, the display driving circuit 120 can be directly bonded to the display panel 100. As an example, the display driving circuit 120 can be a display driver integrated circuit (DDIC). In some embodiments, the display driving circuit 120 may integrate a source integrated circuit (source IC), which can provide data signals to the pixel circuits in the sub-pixels.

[0057] Referring to Figures 2A and 2B, the display device 12 may further include a first circuit board 200, which is connected to the display panel 100. As an example, capacitors and other components required for the display driving circuit 120 can be disposed on the first circuit board 200. Exemplarily, the first circuit board 200 can be an FPC. It is understood that the capacitors and other components required for the display driving circuit 120 are not shown on the first circuit board 200 in Figures 2A and 2B.

[0058] The first circuit board 200 and the display panel 100 can be connected by bonding via pads 510. For example, the display panel 100 has pads 511, and the first circuit board 200 has pads 512. Pads 511 and 512 are bonded one-to-one to achieve electrical connection between the first circuit board 200 and the display panel 100, making pads 510 serve as signal input / output channels between the first circuit board 200 and the display panel 100. Exemplarily, pads 511 and 512 can be metal pads.

[0059] The display device 12 may further include a power management circuit 300, which is connected to the display panel 100 via a first circuit board 200. For example, the power management circuit 300 may be connected to the display driver circuit 120 via the first circuit board 200 to supply power to the display driver circuit 120. Exemplarily, the power management circuit 300 may include, but is not limited to, a power management integrated circuit (PMIC).

[0060] The display device 12 may further include a second circuit board 400, which is connected to the first circuit board 200 via a connector 520, making the connector 520 a signal input / output channel between the first circuit board 200 and the second circuit board 400. Furthermore, a power management circuit 300 is disposed on the second circuit board 400 and is connected to the first circuit board 200 via the connector 520, achieving an electrical connection between the power management circuit 300 and the first circuit board 200, thereby achieving an electrical connection between the power management circuit 300 and the display panel 100. In addition, a timing controller (TCON), a system-on-chip (SOC), etc., may also be disposed on the second circuit board 400. The SOC is connected to the TCON, and the TCON is connected to the display driver circuit 120. Based on this, the SOC drives the TCON to control the operation of the display driver circuit 120.

[0061] For example, the type of connector 520 includes, but is not limited to, one or more of the following: pluggable connectors, terminal connectors, board-to-board (BTB) connectors, wire-to-wire connectors, or special-purpose connectors specially designed for the device or electronic component to be connected. Taking a BTB connector as an example, the first circuit board 200 is connected to the plug 521 of the BTB connector, and the second circuit board 400 is connected to the socket 522 of the BTB connector. Inserting the plug 521 of the BTB connector into its socket 522 achieves an electrical connection between the first circuit board 200 and the second circuit board 400. Alternatively, the first circuit board 200 can be connected to the socket of the BTB connector, and the second circuit board 400 can be connected to the plug of the BTB connector.

[0062] For example, the second circuit board 400 can be a PCB.

[0063] Understandably, the first circuit board 200 and the second circuit board 400 have metal traces, so that signals are transmitted through the metal traces on the first circuit board 200 and the second circuit board 400.

[0064] To drive the sub-pixels in the display area, referring to Figures 2A and 2B, the bezel area of ​​the display panel 100 may also include a gate driving circuit (e.g., a first gate driving circuit 111 and a second gate driving circuit 112). The gate driving circuit provides gate driving signals to the pixel circuits in the sub-pixels, enabling the pixel circuits to drive the light-emitting elements to emit light. Exemplarily, the gate driving circuit can be integrated into the display panel 100 using GOA technology to improve integration, reduce cost, and achieve a narrow bezel. Furthermore, the gate driving circuit includes multiple cascaded shift registers (SRs), allowing for the step-by-step output of gate driving signals to enable the pixel circuits to drive the light-emitting elements to emit light step-by-step.

[0065] In specific implementations, one or more gate driving circuits can be provided in the bezel area. For example, referring to Figures 2A and 2B, a first gate driving circuit 111 and a second gate driving circuit 112 can be provided on both sides of the display area AA to achieve bilateral driving. Alternatively, a gate driving circuit can be provided on one side of the display area AA to achieve single-sided driving. This application embodiment uses the example of providing a first gate driving circuit 111 and a second gate driving circuit 112 on both sides of the display area AA for illustration. For the implementation method where a gate driving circuit is provided on one side of the display area AA, the implementation method of the first gate driving circuit 111 can be referred to, and this application embodiment will not elaborate on it.

[0066] During operation, the gate drive circuit needs to receive an externally input positive power supply voltage VGH and a negative power supply voltage VGL. As an example, the range of the positive power supply voltage VGH required by the gate drive circuit is typically 5.5V to 8.5V, and the range of the negative power supply voltage VGL required by the gate drive circuit is typically -11V to -7V. In other embodiments of this application, the positive power supply voltage VGH and the negative power supply voltage VGL may also be other voltage values, and this application does not limit them.

[0067] The first method for providing the positive power supply voltage VGH and the negative power supply voltage VGL in the prior art is as follows: Referring to Figure 3, Figure 3 exemplarily shows a structural block diagram of a display driving circuit and a power management circuit in the prior art. The display driving circuit integrates a positive power supply charge pump (CP) 22a, a positive power supply LDO 23a, a negative power supply CP 22b, and a negative power supply LDO 23b. The positive power supply CP 22a generates and outputs the positive power supply voltage VGH. The positive power supply voltage VGH is regulated by the positive power supply LDO 23a and then output to the gate driving circuit through the first circuit board. The negative power supply CP 22b generates and outputs the negative power supply voltage VGL. The negative power supply voltage VGL is regulated by the negative power supply LDO 23b and then output to the gate driving circuit through the first circuit board.

[0068] The second way to provide the positive power supply voltage VGH and the negative power supply voltage VGL in the prior art is as follows: Referring to Figure 3, the power management circuit is connected to the display driving circuit through the first circuit board. The power management circuit outputs the positive power supply voltage VGH and the negative power supply voltage VGL. The positive power supply voltage VGH is regulated by the positive power supply LDO23a and then output to the gate driving circuit through the first circuit board. The negative power supply voltage VGL is regulated by the negative power supply LDO23b and then output to the gate driving circuit through the first circuit board.

[0069] Regardless of whether the first or second method is used in the existing technology, LDOs typically operate in buck mode, meaning their output voltage is usually lower than their input voltage. Furthermore, since the mainstream process technology for display driver circuits is high-voltage (HV) technology, the limitations of HV process technology result in a large voltage difference between the output and input voltages of the LDO integrated in the display driver circuit, typically ranging from 0.5V to 0.7V. This leads to significant voltage drops in the power supply paths for the positive power supply voltage VGH and the negative power supply voltage VGL, resulting in low power supply efficiency.

[0070] To reduce voltage loss along the power supply paths of the positive power supply voltage VGH and the negative power supply voltage VGL, and to improve power supply efficiency, referring to Figures 2A and 2B, in the display device 12 provided in this embodiment, the power management circuit 300 can generate the positive power supply voltage VGH and the negative power supply voltage VGL. The power management circuit 300 has a first power port VD1 and a second power port VD2. The first power port VD1 is used to output the positive power supply voltage VGH, and the second power port VD2 is used to output the negative power supply voltage VGL. Exemplarily, the power management circuit 300 is a power control system (PMIC), and the first power port VD1 and the second power port VD2 can be different pins in the PMIC.

[0071] Furthermore, the first circuit board 200 may also include a first conductive component 211. The first end of the first conductive component 211 is connected to the first gate driving circuit 111 and the second gate driving circuit 112, respectively, and the second end of the first conductive component 211 is connected to the first power supply port VD1. This allows the positive power supply voltage VGH output by the power management circuit 300 to be directly input to the first gate driving circuit 111 and the second gate driving circuit 112 through the first conductive component 211, without needing to pass through the positive power supply LDO 23a in the display driving circuit 120. This reduces voltage loss in the power supply path of the positive power supply voltage VGH and improves power supply efficiency. For example, the second end of the first conductive component 211 can be connected to the first power supply port VD1 through a connector 520, and the first end of the first conductive component 211 can be connected to the first gate driving circuit 111 and the second gate driving circuit 112 through pads 510, so that the positive power supply voltage VGH can be input to the first gate driving circuit 111 and the second gate driving circuit 112.

[0072] The first circuit board 200 may further include a second conductive component 212. The first end of the second conductive component 212 is connected to the first gate driving circuit 111 and the second gate driving circuit 112, respectively, and the second end of the second conductive component 212 is connected to the second power supply port VD2. This allows the negative power supply voltage VGL output by the power management circuit 300 to be directly input to the first gate driving circuit 111 and the second gate driving circuit 112 through the second conductive component 212, without needing to pass through the negative power supply LDO 23b in the display driving circuit 120. This reduces voltage loss in the power supply path of the negative power supply voltage VGL and improves power supply efficiency. For example, the second end of the second conductive component 212 can be connected to the second power supply port VD2 through a connector 520, and the first end of the second conductive component 212 can be connected to the first gate driving circuit 111 and the second gate driving circuit 112 through pads 510, so that the negative power supply voltage VGL can be input to the first gate driving circuit 111 and the second gate driving circuit 112.

[0073] Understandably, although the positive power supply voltage VGH output from the first power port VD1 experiences a voltage drop after passing through the first conductive component 211, the voltage difference across the first conductive component 211 is typically less than 0.5V. Compared to the positive power supply LDO in the display driver circuit 120, using the first conductive component 211 as the power supply path for the positive power supply voltage VGH can effectively reduce voltage loss and improve power supply efficiency. For example, by reasonably selecting the specific structure of the first conductive component 211, the voltage difference across the first conductive component 211 can be made less than or equal to 0.4V, 0.3V, 0.2V, 0.15V, 0.1V, 0.05V, etc., further effectively reducing voltage loss and further improving power supply efficiency.

[0074] As an example, referring to Figure 4, which exemplarily illustrates another structural schematic diagram of the display device provided in an embodiment of this application, the first conductive component 211 can be configured as a resistor R1, with the first end of resistor R1 serving as the first end of the first conductive component 211 and the second end of resistor R1 serving as the second end of the first conductive component 211. Thus, the first conductive component 211 can be implemented using a resistor. Since resistor technology is relatively mature, the implementation of the first conductive component 211 is relatively simple, reducing design difficulty and production costs. Exemplarily, the resistance value of resistor R1 can be 0Ω to 10Ω. For example, the resistance value of resistor R1 can be 0Ω, 1Ω, 2Ω, 4Ω, 5Ω, 8Ω, 10Ω, etc., and is not limited here. In some embodiments, resistor R1 can include one or more resistors. When resistor R1 includes multiple resistors, these multiple resistors can be connected in series and / or parallel to form resistor R1. Furthermore, resistor R1 can be formed using a surface-mount resistor, or it can be formed using a wire (e.g., a metal trace).

[0075] Understandably, although the negative power supply voltage VGL output from the second power port VD2 also experiences a voltage drop after passing through the second conductive component 212, the voltage difference across the second conductive component 212 is typically less than 0.5V. Compared to the negative power supply LDO in the display driver circuit 120, using the second conductive component 212 as the power supply path for the negative power supply voltage VGL can effectively reduce voltage loss and improve power supply efficiency. For example, by reasonably selecting the specific structure of the second conductive component 212, the voltage difference across the second conductive component 212 can be made less than or equal to 0.4V, 0.3V, 0.2V, 0.15V, 0.1V, 0.05V, etc., further effectively reducing voltage loss and further improving power supply efficiency.

[0076] As an example, referring to Figure 4, the second conductive component 212 can be configured as a resistor R2, with its first end serving as the first end and its second end serving as the second end. This allows the second conductive component 212 to be implemented using a resistor. Since resistor technology is relatively mature, implementing the second conductive component 212 is relatively simple, reducing design complexity and production costs. Exemplarily, the resistance value of resistor R2 can be 0Ω to 10Ω. For example, the resistance value of resistor R2 can be 0Ω, 1Ω, 2Ω, 4Ω, 5Ω, 8Ω, 10Ω, etc., without limitation. In some embodiments, resistor R2 may include one or more resistors. When resistor R2 includes multiple resistors, these multiple resistors can be connected in series and / or parallel to form resistor R2. Furthermore, resistor R2 can be formed using a surface-mount resistor, or it can be formed using a wire (e.g., a metal trace).

[0077] It is worth mentioning that, due to limitations in process conditions or other factors, there may be some deviations or errors in the actual process, which may cause the resistance values ​​of the above resistors R1 and R2 to be 0Ω, but their resistance values ​​are not truly zero, but rather a very small resistance value, close to zero. Therefore, as long as the relationship between the resistance values ​​of resistors R1 and R2 being 0Ω roughly meets the above conditions, it is within the scope of protection of this application.

[0078] For example, resistors R1 and R2 can be set as zero-ohm resistors. Zero-ohm resistors, also known as bridging resistors, do not have a resistance of zero, but rather an ideal resistor whose actual resistance is very close to zero ohms. Therefore, using zero-ohm resistors minimizes voltage drop, further reducing voltage loss and improving power supply efficiency. Furthermore, since the technology for zero-ohm resistors is relatively mature, their implementation is relatively simple, thus reducing design complexity and production costs. Also, compared to ordinary resistors, which have a fixed resistance value, zero-ohm resistors, although close to zero resistance, still have a certain tolerance range and accuracy level.

[0079] The process of fabricating bipolar, complementary metal-oxide-semiconductor (CMOS), and double-diffused metal-oxide-semiconductor (DMOS) devices on the same chip is abbreviated as BCD process. Because BCD process combines the advantages of each of these three types of devices, it has become the mainstream process technology for power management circuits 300. As a result, power management circuits 300 formed using BCD process have lower power consumption, resulting in smaller voltage drops in the power supply paths for the positive power supply voltage VGH and the negative power supply voltage VGL.

[0080] Referring to Figure 5A, which illustrates a schematic diagram of a power management circuit provided in an embodiment of this application, the power management circuit 300 may include a first power supply voltage generation circuit 311 and a second power supply voltage generation circuit 312. The first power supply voltage generation circuit 311 is connected to a first power port VD1 and generates a positive power supply voltage VGH, which is output through the first power port VD1. The second power supply voltage generation circuit 312 is connected to a second power port VD2 and generates a negative power supply voltage VGL, which is output through the second power port VD2. Exemplarily, the first power supply voltage generation circuit 311 may include, but is not limited to, a boost circuit, and the second power supply voltage generation circuit 312 may include, but is not limited to, a boost-buck circuit.

[0081] To further improve the stability of the output voltages of the first power supply voltage generation circuit 311 and the second power supply voltage generation circuit 312, referring to Figure 5B, which exemplarily illustrates another structural schematic diagram of the power management circuit provided in this embodiment, the power management circuit 300 may further include a voltage regulator circuit. The first power supply voltage generation circuit 311 and the second power supply voltage generation circuit 312 are connected to the first power port VD1 and the second power port VD2 respectively through the voltage regulator circuit 320. Thus, the voltage regulator circuit 320 regulates the positive power supply voltage VGH generated by the first power supply voltage generation circuit 311 and the negative power supply voltage VGL generated by the second power supply voltage generation circuit 312, and outputs them to the first power port VD1 and the second power port VD2, thereby improving the stability of the positive power supply voltage VGH and the negative power supply voltage VGL. Therefore, in this embodiment, the voltage regulator circuit 320 is integrated into the power management circuit 300, so that the voltage regulator circuit 320 is also formed using BCD technology. Because the BCD process has significant advantages over the HV process in fabricating power-related devices, the voltage regulator circuit 320 formed using the BCD process can have a lower voltage drop than the LDO formed using the HV process. For example, although the voltage regulator circuit 320 formed using the BCD process also operates in buck mode, the voltage difference between its input and output voltages is less than 0.5V, and can even be lower (e.g., less than 0.2V). This can improve power supply efficiency (e.g., by 3% to 5%), as well as the stability of the positive power supply voltage VGH and the negative power supply voltage VGL.

[0082] For example, the voltage regulator circuit 320 may include a first voltage regulator 321 and a second voltage regulator 322. The first power supply voltage generation circuit 311 is connected to the first power port VD1 through the first voltage regulator 321, and the second power supply voltage generation circuit 312 is connected to the second power port VD2 through the second voltage regulator 322. Thus, the positive power supply voltage VGH generated by the first power supply voltage generation circuit 311 is regulated by the first voltage regulator 321 and output to the first power port VD1, and the negative power supply voltage VGL generated by the second power supply voltage generation circuit 312 is regulated by the second voltage regulator 322 and output to the second power port VD2.

[0083] For example, the first regulator 321 can be an LDO, which can have a lower voltage drop than an LDO formed by an HV process because it is formed using a BCD process.

[0084] For example, the second regulator 322 can be an LDO, which can have a lower voltage drop than an LDO formed by an HV process because it is formed using a BCD process.

[0085] For example, the first voltage regulator 321 and the second voltage regulator 322 have the same structure, thereby maintaining process consistency and reducing design difficulty and production costs.

[0086] Understandably, in order to reduce the size of the power management circuit 300 and miniaturize it, the yield and output stability of the first power supply voltage generation circuit 311 and the second power supply voltage generation circuit 312 can be improved by optimizing the BCD process, or the voltage regulator circuit 320 can be omitted from the power management circuit 300.

[0087] For example, referring to FIG6, which exemplarily illustrates another structural schematic diagram of the display device provided in an embodiment of this application, the first circuit board 200 further includes a first capacitor C1 connected to a first terminal of the first conductive component 211, wherein the first terminal of the first capacitor C1 is connected to the first terminal of the first conductive component 211, and the second terminal of the first capacitor C1 is connected to the ground terminal GND. Thus, the first capacitor C1 can be used to improve the voltage stability of the power supply path of the positive power supply voltage VGH in the first circuit board 200. As an example, when the first conductive component 211 is a resistor R1, the first terminal of the first capacitor C1 can be connected to the first terminal of the resistor R1.

[0088] For example, referring to FIG6, the first circuit board 200 further includes a second capacitor C2 connected to the second terminal of the first conductive component 211, wherein the first terminal of the second capacitor C2 is connected to the second terminal of the first conductive component 211, and the second terminal of the second capacitor C2 is connected to the ground terminal GND. Thus, the second capacitor C2 can be used to further improve the voltage stability of the power supply path of the positive power supply voltage VGH in the first circuit board 200. As an example, when the first conductive component 211 is a resistor R1, the first terminal of the second capacitor C2 can be connected to the second terminal of the resistor R1.

[0089] For example, referring to FIG6, the first circuit board 200 further includes a third capacitor C3 connected to a first terminal of the second conductive component 212, wherein the first terminal of the third capacitor C3 is connected to the first terminal of the second conductive component 212, and the second terminal of the third capacitor C3 is connected to the ground terminal GND. Thus, the third capacitor C3 can be used to improve the voltage stability of the power supply path of the negative power supply voltage VGL in the first circuit board 200. As an example, when the second conductive component 212 is a resistor R2, the first terminal of the third capacitor C3 can be connected to the first terminal of the resistor R2.

[0090] For example, referring to FIG6, the first circuit board 200 further includes a fourth capacitor C4 connected to the second terminal of the second conductive component 212, wherein the first terminal of the fourth capacitor C4 is connected to the second terminal of the second conductive component 212, and the second terminal of the fourth capacitor C4 is connected to the ground terminal GND. Thus, the fourth capacitor C4 can be used to further improve the voltage stability of the power supply path of the negative power supply voltage VGL in the first circuit board 200. As an example, when the second conductive component 212 is a resistor R2, the first terminal of the fourth capacitor C4 can be connected to the second terminal of the resistor R2.

[0091] For example, referring to FIG7, FIG7 illustrates another structural schematic diagram of the display device provided in the embodiment of the present application. The second end of the first conductive component 211 and the second end of the second conductive component 212 are also connected to the display driving circuit 120, so that the first power port VD1 and the second power port VD2 are also connected to the display driving circuit 120, and the positive power supply voltage VGH and the negative power supply voltage VGL are input to the display driving circuit 120 to supply power to the display driving circuit 120.

[0092] In some embodiments, referring to FIG7, the first end of the first conductive component 211 and the first end of the second conductive component 212 are also connected to the display driving circuit 120, thereby reducing costs without having to change the structure and connection relationship between the pads 512 of the first circuit board 200 and the pads 511 of the display panel 100.

[0093] For example, referring to FIG7, the display driving circuit 120 may also integrate a timing generation circuit 121. The timing generation circuit 121 can generate frame trigger signals STV1 and STV2, and a clock signal (not shown in FIG7). The frame trigger signal STV1 is output to the first gate driving circuit 111 to trigger the first gate driving circuit 111 to work, and the frame trigger signal STV2 is output to the second gate driving circuit 112 to trigger the second gate driving circuit 112 to work. In order to make the frame trigger signals STV1 and STV2 meet the requirements of the first gate driving circuit 111 and the second gate driving circuit 112 respectively, the positive power supply voltage VGH and the negative power supply voltage VGL are also input to the timing generation circuit 121, that is, the positive power supply voltage VGH and the negative power supply voltage VGL are also used to power the timing generation circuit 121, so that the timing generation circuit 121 can generate frame trigger signals STV1 and STV2 based on the positive power supply voltage VGH and the negative power supply voltage VGL.

[0094] As an example, referring to FIG8, FIG8 exemplarily illustrates another structural schematic diagram of the display device provided in an embodiment of this application. The display driving circuit 120 may also integrate a third voltage regulator 122a and a fourth voltage regulator 122b. The first end of the first conductive component 211 is connected to the first end of the third voltage regulator 122a, and the second end of the first conductive component 211 is connected to the second end of the third voltage regulator 122a. The first end of the second conductive component 212 is connected to the first end of the fourth voltage regulator 122b, and the second end of the second conductive component 212 is connected to the second end of the fourth voltage regulator 122b. Thus, the positive power supply voltage VGH is regulated by the third voltage regulator 122a and output to the first gate driving circuit 111 and the second gate driving circuit 112. The negative power supply voltage VGL is regulated by the fourth voltage regulator 122b and output to the first gate driving circuit 111 and the second gate driving circuit 112, thereby enabling the display driving circuit 120 to also have the function of stabilizing the positive power supply voltage VGH and the negative power supply voltage VGL. In this embodiment, since the voltage loss can be reduced when the first conductive component 211 and the second conductive component 212 are used as the power supply paths for the positive power supply voltage VGH and the negative power supply voltage VGL, respectively, when the display driving circuit 120 integrates the third voltage regulator 122a and the fourth voltage regulator 122b, the third voltage regulator 122a and the fourth voltage regulator 122b can be set to a high impedance state, that is, the third voltage regulator 122a and the fourth voltage regulator 122b are not used as power supply paths, thereby reducing power consumption.

[0095] Referring to Figure 8, the display driving circuit 120 may also integrate a positive power supply CP22a and a negative power supply CP22b. The output terminal of the positive power supply CP22a is connected to the input terminal of the third voltage regulator 122a, and the output terminal of the negative power supply CP22b is connected to the input terminal of the fourth voltage regulator 122b. The positive power supply CP22a generates and outputs a positive power supply voltage VGH, which is regulated by the third voltage regulator 122a and then output to the first gate driving circuit 111 and the second gate driving circuit 112. The negative power supply CP22b generates and outputs a negative power supply voltage VGL, which is regulated by the fourth voltage regulator 122b and then output to the first gate driving circuit 111 and the second gate driving circuit 112. Thus, the display driving circuit 120 can also have the output functions of positive power supply voltage VGH and negative power supply voltage VGL. In this embodiment of the application, when the first conductive component 211 and the second conductive component 212 are used as the power supply paths for the positive power supply voltage VGH and the negative power supply voltage VGL, respectively, the third voltage regulator 122a and the fourth voltage regulator 122b are set to a high-impedance state. Therefore, under normal power supply path conditions of the first conductive component 211 and the second conductive component 212, the positive power supply voltage VGH and the negative power supply voltage VGL generally will not be output through the third voltage regulator 122a and the fourth voltage regulator 122b. Based on this, the positive power supply CP22a and the negative power supply CP22b can also be set to a non-working state to further reduce power consumption.

[0096] For example, the third voltage regulator 122a and the fourth voltage regulator 122b can each be configured as LDOs, so that the display driving circuit 120 in this embodiment is compatible with the structure in the prior art shown in FIG3, and can be applied to the display device in this embodiment without additional changes to the structure of the existing display driving circuit 120. Furthermore, this eliminates the need for additional design of the pads for the first circuit board 200 and the display panel 100; the existing pads can be used directly to achieve the electrical connection between the first circuit board 200 and the display panel 100. In other embodiments of this application, the third voltage regulator 122a and the fourth voltage regulator 122b can also be configured as other devices capable of voltage regulation, which are not limited here.

[0097] As an example, if the first conductive component 211 is open-circuited, in this embodiment of the application, the positive power supply CP22a and the third voltage regulator 122a in the display driving circuit 120 can be switched to normal operation, so that the positive power supply voltage VGH generated by the positive power supply CP22a can be output to the first gate driving circuit 111 and the second gate driving circuit 112 after being regulated by the third voltage regulator 122a, thus ensuring the normal operation of the first gate driving circuit 111 and the second gate driving circuit 112.

[0098] As an example, if the second conductive component 212 is disconnected, in this embodiment of the application, the negative power supply CP22b and the fourth voltage regulator 122b in the display driving circuit 120 can be switched to normal operation, so that the negative power supply voltage VGL generated by the negative power supply CP22b can be output to the first gate driving circuit 111 and the second gate driving circuit 112 after being regulated by the fourth voltage regulator 122b, thus ensuring the normal operation of the first gate driving circuit 111 and the second gate driving circuit 112.

[0099] In other embodiments of this application, the third voltage regulator 122a may not be connected to the first conductive component 211, and the fourth voltage regulator 122b may not be connected to the second conductive component 212, thereby reducing the difficulty of wiring design inside the display driving circuit 120.

[0100] As another example, the display driver circuit 120 may not integrate one or more of the positive power supply CP22a, negative power supply CP22b, third voltage regulator 122a, and fourth voltage regulator 122b. This can simplify the internal circuit structure of the display driver circuit 120, thereby reducing the size and cost of the display driver circuit 120.

[0101] Figure 9 illustrates another structural schematic diagram of the display device provided in the embodiment of this application. This embodiment is a modification of the implementation method in the above embodiments. The following only describes the differences between this embodiment and the above embodiments, and the similarities are not repeated here.

[0102] For example, referring to FIG9, the first conductive component 211 can also be configured as a wire L1. Therefore, the first conductive component 211 can be implemented using a wire. Since wire technology is relatively mature, the implementation of the first conductive component 211 is relatively simple, reducing design difficulty and production costs. For example, the conductive L1 can be a metal trace formed by etching a metal layer during the fabrication of the first circuit board 200.

[0103] When the first conductive component 211 is set as a wire L1, a first capacitor C1 or a second capacitor C2 can be set on the first circuit board 200, that is, only one capacitor is set, reducing the number of capacitors. Figure 9 illustrates this using the setting of the first capacitor C1 as an example. Of course, to further improve voltage stability, both the first capacitor C1 and the second capacitor C2 can be set on the first circuit board 200.

[0104] In other embodiments of this application, the first conductive component 211 can also be configured as a combination of resistor R1 and wire L1. Thus, if one of resistor R1 and wire L1 is open-circuited, the other can be used as the power supply path, thereby improving power supply stability.

[0105] For example, referring to FIG9, the second conductive component 212 can also be configured as a wire L2. This allows the second conductive component 212 to be implemented using a wire. Since wire technology is relatively mature, the implementation of the second conductive component 212 is also relatively simple, reducing design difficulty and production costs. For example, the conductive L2 can be a metal trace formed by etching a metal layer during the fabrication of the first circuit board 200.

[0106] When the second conductive component 212 is set as wire L2, a third capacitor C3 or a fourth capacitor C4 can be set on the first circuit board 200, that is, only one capacitor is set to reduce the number of capacitors. Figure 9 illustrates the setting of the third capacitor C3 as an example. Of course, in order to further improve voltage stability, both the third capacitor C3 and the fourth capacitor C4 can be set on the first circuit board 200.

[0107] In other embodiments of this application, the second conductive component 212 can also be configured as a combination of resistor R2 and wire L2. Thus, if one of resistor R2 and wire L2 is open-circuited, the other can be used as the power supply path, thereby improving power supply stability.

[0108] In other embodiments of this application, the LDO device can be formed using a BCD process and directly disposed on the first circuit board. For example, the LDO device can be placed in the power supply path of the positive power supply voltage VGH. Since the LDO device formed using the BCD process has a smaller voltage drop than the LDO device formed using the HV process, the stability of the positive power supply voltage VGH on the first circuit board can be further improved while reducing voltage loss. Exemplarily, the LDO device can be connected between the first power supply port VD1 and the first conductive component 211, or the LDO device can be connected between the first conductive component 211 and the first gate driving circuit and the second gate driving circuit, or the LDO device can be directly used as the first conductive component 211.

[0109] Furthermore, in other embodiments of this application, the LDO device can also be placed in the power supply path of the negative power supply voltage VGL. For example, the LDO device can be connected between the second power supply port VD2 and the second conductive component 212, or the LDO device can be connected between the second conductive component 212 and the first gate driving circuit and the second gate driving circuit, or the LDO device can be directly used as the second conductive component 212.

[0110] It is worth mentioning that placing the LDO device on the first circuit board requires additional design of the first circuit board structure, which is costly. Therefore, in this embodiment, the LDO is preferably integrated into the power management circuit.

[0111] It is understood that, in order to clearly illustrate the structure of the display device in the embodiments of this application, Figures 2A to 9 are illustrated using the example of a power management circuit 300 including a first power port VD1 and a second power port VD2, and a first circuit board 200 including a first conductive component 211 and a second conductive component 212. In other embodiments of this application, the power management circuit 300 may further include an nth power port, and the first circuit board 200 may further include an nth conductive component. The first end of the nth conductive component is connected to the nth power port, and the second end of the nth conductive component is connected to the first gate driving circuit 111, thereby realizing the supply of three or more voltages. Here, n is greater than or equal to 3, that is, n can be 3, 4, 5, or more values. The specific value of n can be flexibly designed according to the actual application scenario, and will not be elaborated here. Examples are given below in conjunction with the accompanying drawings.

[0112] Figure 10 illustrates another structural schematic diagram of the display device provided in the embodiment of this application. This embodiment is a modification of the implementation method in the above embodiments. The following only describes the differences between this embodiment and the above embodiments, and the similarities are not repeated here.

[0113] For example, referring to FIG10, when n=3, the power management circuit further includes a third power port VD3, and the first circuit board 200 further includes a third conductive component 213. The first end of the third conductive component 213 is connected to the third power port VD3, and the second end of the third conductive component 213 is connected to the first gate driving circuit 111 and the second gate driving circuit 112, respectively. Thus, other voltages can be output using the third power port VD3.

[0114] As an example, the first gate drive circuit 111 and the second gate drive circuit 112 can be powered by two negative power supply voltages VGL1 and VGL2 with different voltages to improve the output stability of the first gate drive circuit 111 and the second gate drive circuit 112. For this purpose, the power management circuit 300 can generate two negative power supply voltages VGL1 and VGL2 with different voltages, wherein the negative power supply voltage VGL1 can be output through the second power supply port VD2 and the negative power supply voltage VGL2 can be output through the third power supply port VD3.

[0115] It is understandable that the implementation of the power management circuit 300 generating and outputting negative power supply voltages VGL1 and VGL2 can be combined with the implementation of the power management circuit 300 generating and outputting negative power supply voltage VGL in the above embodiment, that is, setting two second power supply voltage generating circuits 312 and two second voltage regulators 322 in the power management circuit 300, which will not be elaborated here.

[0116] For example, referring to FIG10, the third conductive component 213 can be configured as a resistor R3. Alternatively, the third conductive component 213 can also be configured as a wire, or a combination of conductivity and resistance. It is understood that FIG10 does not illustrate the capacitor connected to the third conductive component 213. For the implementation of the third conductive component 213 connected to the capacitor, the implementation of the second conductive component 212 connected to the capacitor in the above embodiments can be referred to, and the specific details will not be repeated here.

[0117] For example, referring to FIG10, when n=4, the power management circuit further includes a fourth power port VD4, and the first circuit board 200 further includes a fourth conductive component 214. The first end of the fourth conductive component 214 is connected to the fourth power port VD4, and the second end of the fourth conductive component 214 is connected to the first gate driving circuit 111 and the second gate driving circuit 112, respectively. Thus, other voltages can be output using the fourth power port VD4.

[0118] As an example, the first gate drive circuit 111 and the second gate drive circuit 112 can be powered by two different positive power supply voltages VGH1 and VGH2 to improve the output stability of the first gate drive circuit 111 and the second gate drive circuit 112. For this purpose, the power management circuit 300 can generate two different positive power supply voltages VGH1 and VGH2, wherein the positive power supply voltage VGH1 can be output through the first power supply port VD1 and the positive power supply voltage VGH2 can be output through the fourth power supply port VD4.

[0119] It is understandable that the implementation of the power management circuit 300 generating and outputting positive power supply voltages VGH1 and VGH2 can be combined with the implementation of the power management circuit 300 generating and outputting positive power supply voltage VGH in the above embodiment, that is, setting two first power supply voltage generating circuits 311 and two first voltage regulators 321 in the power management circuit 300, which will not be elaborated here.

[0120] For example, referring to FIG10, the fourth conductive component 214 can be configured as a resistor R4. Alternatively, the fourth conductive component 214 can also be configured as a wire, or a combination of conductivity and resistance. It is understood that FIG10 does not illustrate the capacitor connected to the fourth conductive component 214. For the implementation of the fourth conductive component 214 connected to the capacitor, the implementation of the first conductive component 211 connected to the capacitor in the above embodiments can be referred to, and the specific details will not be repeated here.

[0121] The above description is only a specific implementation of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application.

Claims

1. A display device, characterized in that, include: The display panel, the power management circuit, and the first circuit board are connected to the power management circuit via the first circuit board. The display panel includes a first gate driving circuit; The power supply circuit includes a first power port and a second power port. The first circuit board includes a first conductive component and a second conductive component. A first end of the first conductive component is connected to the first gate driving circuit, and a second end of the first conductive component is connected to the first power port. A first end of the second conductive component is connected to the first gate driving circuit, and a second end of the second conductive component is connected to the second power port.

2. The display device according to claim 1, wherein The power management circuit includes a voltage regulator circuit, which is connected to the first power port and the second power port respectively.

3. The display device according to claim 2, wherein The voltage regulator circuit includes a first voltage regulator and a second voltage regulator, wherein the first voltage regulator is connected to the first power port and the second voltage regulator is connected to the second power port.

4. A display device according to any one of claims 1-3, characterized in that Each of the first conductive component and the second conductive component includes one or a combination of a resistor and a wire.

5. The display device according to claim 4, wherein The resistance value of the resistor is 0Ω to 10Ω.

6. The display device according to any one of claims 1 to 5, wherein The first circuit board further includes a first capacitor connected to a first terminal of the first conductive component; or, The first circuit board further includes a second capacitor connected to the second terminal of the first conductive component; or, The first circuit board further includes a third capacitor connected to a first terminal of the second conductive component; or, The first circuit board also includes a fourth capacitor connected to the second end of the second conductive component.

7. The display device according to any one of claims 1 to 6, wherein The display panel further includes a display driving circuit, and the second ends of the first conductive component and the second conductive component are respectively connected to the display driving circuit.

8. The display device according to claim 7, wherein The first end of the first conductive component is also connected to the display driving circuit; or, the first end of the second conductive component is also connected to the display driving circuit.

9. The display device of claim 8, wherein, The display driving circuit includes a third voltage regulator and a fourth voltage regulator. The first end of the first conductive component is connected to the first end of the third voltage regulator, the second end of the first conductive component is connected to the second end of the third voltage regulator, the first end of the second conductive component is connected to the first end of the fourth voltage regulator, and the second end of the second conductive component is connected to the second end of the fourth voltage regulator.

10. A display device according to any one of claims 1-9, characterized in that The power supply circuit also includes an nth power port, and the first circuit board also includes an nth conductive component. The first end of the nth conductive component is connected to the nth power port, and the second end of the nth conductive component is connected to the first gate drive circuit. n is greater than or equal to 3.

11. The display device according to any one of claims 1 to 10, wherein The display panel further includes a second gate driving circuit, and the first end of the first conductive component and the first end of the second conductive component are respectively connected to the second gate driving circuit.

12. The display device according to any one of claims 1 to 11, characterized by The first end of the first conductive component is connected to the first gate driving circuit via a solder pad; or... The first end of the second conductive component is connected to the first gate driving circuit via a pad.

13. The display device according to any one of claims 1 to 12, characterized by The display device further comprises a second circuit board, the second circuit board and the first circuit board are connected through a connector, the power management circuit is arranged on the second circuit board, and the power management circuit is connected with the first circuit board through the connector.

14. An electronic device, comprising: Comprising: A housing and a display device as claimed in any of the claims 1-13, the display device being fixed to the housing.

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