CN113724666A

CN113724666A - Display device and vehicle

Info

Publication number: CN113724666A
Application number: CN202111010131.4A
Authority: CN
Inventors: 黄正园; 王健; 丁宗财; 郑智; 柏义波; 熊冠中
Original assignee: Shanghai AVIC Optoelectronics Co Ltd
Current assignee: Shanghai AVIC Optoelectronics Co Ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2021-11-30

Abstract

The application provides a display device and a vehicle, the display device comprises a plurality of source electrode driving circuits, a plurality of switch elements and a time sequence adjusting unit, each switch element is connected with at least one source electrode driving circuit, the switch elements receive driving signals, the driving signal is transmitted to the source driving circuit connected with the switching element when the switching element is turned on, the timing adjusting unit is connected with the plurality of switching elements, for supplying the plurality of switching elements with the turn-on voltages according to a plurality of preset timing signals, that is, a plurality of switching elements may be provided for the source driving circuit, thereby controlling the time of the driving signal transmitted to each source electrode driving circuit, avoiding the current over-concentration caused by the driving signal transmitted to the source electrode driving circuit at the same time in the prior art, causing a problem that a peak current of the display device is excessively large, thereby reducing EMI energy generated from the display device.

Description

Display device and vehicle

Technical Field

The invention relates to the field of display, in particular to a display device and a vehicle.

Background

In recent years, a dot-matrix liquid crystal panel in which a plurality of pixel units are arranged in a two-dimensional matrix has been applied as a display device to a mobile electronic device in which a semiconductor integrated circuit configured to receive a driving signal and transmit the driving signal to a Source line in the display panel is mounted to control the liquid crystal panel. As the display panel becomes larger in area, the number of source driving circuits increases.

In the conventional liquid crystal driver, since all the output terminals connected to the source driving circuit supply driving signals at the same timing, the current driving the liquid crystal panel may be concentrated to generate a momentary large current, which may cause spike noise or voltage drop on the source line.

In general, as the electromagnetic environment of electronic devices becomes more complex, the electronic devices are increasingly required to consider not only electromagnetic interference (EMI) in themselves, but also in systems in which they are a constituent. In the aforementioned liquid crystal display device using the conventional liquid crystal driver, a large current instantaneously flows due to simultaneous driving of the source lines of the liquid crystal panel, and as a result, spike noise generated on the signal lines may cause EMI. In order to reduce the EMI, concentration of current for driving the liquid crystal panel should be prevented.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a display device and a vehicle, which can reduce the peak current of the display device and reduce the electromagnetic interference energy generated by the display device.

An embodiment of the present application provides a display device, including:

a plurality of source driving circuits and a plurality of switching elements; each switch element is connected with at least one source electrode driving circuit, the switch elements receive driving signals, and the driving signals are transmitted to the source electrode driving circuits connected with the switch elements when the switch elements are switched on;

and the time sequence adjusting unit is connected with the plurality of switch elements and is used for providing starting voltage for the plurality of switch elements according to a plurality of preset time sequence signals.

The embodiment of the application provides a vehicle comprising the display device.

The embodiment of the application provides a display device and a vehicle, the display device comprises a plurality of source electrode driving circuits, a plurality of switching elements and a time sequence adjusting unit, each switching element is connected with at least one source electrode driving circuit and receives a driving signal, the driving signal is transmitted to the source driving circuit connected with the switching element when the switching element is turned on, the timing adjusting unit is connected with the plurality of switching elements, for supplying the plurality of switching elements with the turn-on voltages according to a plurality of preset timing signals, that is, a plurality of switching elements may be provided for the source driving circuit, thereby controlling the time of the driving signal transmitted to each source electrode driving circuit, avoiding the current over-concentration caused by the driving signal transmitted to the source electrode driving circuit at the same time in the prior art, causing a problem that a peak current of the display device is excessively large, thereby reducing EMI energy generated from the display device.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of a display device according to the prior art;

FIG. 2 is a timing diagram of a conventional source driver circuit;

fig. 3 is a structural diagram of a display device according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of another display device according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of another display device according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram of another display device according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of another display device provided in an embodiment of the present application;

FIG. 8 is a schematic structural diagram of another display device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of still another display device in the embodiment of the present application;

FIG. 10 is a diagram illustrating a preset timing signal according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of still another display device in the embodiment of the present application;

fig. 12 is a schematic view of a vehicle according to an embodiment of the present application.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein, and it will be apparent to those of ordinary skill in the art that the present application is not limited by the specific embodiments disclosed below.

Next, the present application will be described in detail with reference to the drawings, and in the detailed description of the embodiments of the present application, the cross-sectional views illustrating the structure of the device are not enlarged partially according to the general scale for convenience of illustration, and the drawings are only examples, which should not limit the scope of the protection of the present application. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

In a conventional display device, a liquid crystal panel may be controlled by a source driving circuit, and referring to fig. 1, a schematic structure of a conventional display device is shown, in which a source driving circuit 102 has one end connected to a driving signal terminal 101 and the other end connected to a source line 103, and the source line 103 may be connected to a pixel electrode 104. With the increase of the size of the display panel, the liquid crystal panel may be controlled by providing a plurality of source driving circuits 102, the plurality of source driving circuits 102 may transmit driving signals to corresponding source lines 103, the source lines 103 are connected to the respective pixel units, and after the source driving circuits are turned on, the driving signals may be transmitted to the pixel electrodes 104 to charge the pixel capacitors, thereby implementing the display of the pixel units.

For example, for a 27 inch display screen, there may be 4032 × 768 pixel groups, each pixel group includes three-color red (R), green (G), and blue (B) pixel units, that is, the display panel may include 4032 × 768 pixel units, and the pixel units may be controlled by 12 source driving circuits (ICs), specifically, the display screen may be divided into 12 sub-regions, and each source driving circuit is connected to a plurality of pixel units in one sub-region.

However, in the conventional liquid crystal driver, all the terminals 101 connected to the source driving circuits provide driving signals at the same timing, as shown in fig. 2, which is a timing diagram of a conventional source driving circuit, wherein the source driving circuits (IC1-IC12) are turned on at the same time, and the current driving the liquid crystal panel is concentrated to generate a large instantaneous current, which may cause spike noise or voltage drop on the source lines.

In general, as the electromagnetic environment of electronic devices becomes more complex, the electronic devices are increasingly required to consider not only electromagnetic interference (EMI) in themselves, but also in systems in which they are a constituent. In the aforementioned liquid crystal display device using the conventional liquid crystal driver, a large current instantaneously flows due to simultaneous driving of the source lines of the liquid crystal panel, and as a result, spike noise generated on the signal lines may cause EMI. For example, the EMI requirements of display devices are mostly required by the main engine manufacturers (OEM) and suppliers (Tier 1) of vehicles, and CISPR 25Class 5 and above is required, but the aforementioned display devices have the risk of exceeding EMI and do not meet the requirements of on-board display screens.

Based on this, the embodiment of the application provides a display device and a vehicle, the display device comprises a plurality of source driving circuits, a plurality of switching elements and a time sequence adjusting unit, each switching element is connected with at least one source driving circuit, the switching elements receive driving signals, the driving signal is transmitted to the source driving circuit connected with the switching element when the switching element is turned on, the timing adjusting unit is connected with the plurality of switching elements, for supplying the plurality of switching elements with the turn-on voltages according to a plurality of preset timing signals, that is, a plurality of switching elements may be provided for the source driving circuit, thereby controlling the time of the driving signal transmitted to each source electrode driving circuit, avoiding the current over-concentration caused by the driving signal transmitted to the source electrode driving circuit at the same time in the prior art, causing a problem that a peak current of the display device is excessively large, thereby reducing EMI energy generated from the display device.

For a better understanding of the technical solutions and effects of the present application, specific embodiments will be described in detail below with reference to the accompanying drawings.

Referring to fig. 3, the display device according to an embodiment of the present disclosure may include a plurality of source driving circuits 230, a plurality of switching elements 210, and a timing adjustment unit 221.

The source driving circuit 230 is configured to supply driving signals to source lines of a display panel (panel), the driving signals are voltage signals corresponding to image data, the source driving circuit 230 may be connected to a plurality of source lines 240, the source lines 240 are respectively connected to different pixel units so as to provide driving signals for the different pixel units, and the driving signals of the different pixel units may be different so as to meet different display requirements. The number of the source driving circuits 230 may be determined according to the area of the display panel, and when the area of the display panel is large, a larger number of the source driving circuits 230 may be provided, for example, when the display panel is a 27-inch screen, 12 source driving circuits 230 may be provided, and when the display panel is of other sizes, another number of the source driving circuits 230 may be provided.

Each of the plurality of source driving circuits 230 has one end connected to the plurality of source lines 240 and the other end connected to the switching device 210 for transmitting the driving signal provided by the switching device 210 to the source lines 240, and each of the switching devices 210 is connected to at least one of the source driving circuits 230.

The switching elements 210 have both on and off states, and the plurality of switching elements 210 are configured to receive a driving signal, and when the switching elements 210 are on, the driving signal is transmitted to the source driving circuit 230 connected to the switching elements 210 through the switching elements 210, and when the switching elements 210 are off, the driving signal is blocked by the switching elements 210 and is not transmitted to the source driving circuit 230 connected to the switching elements 210. Each of the plurality of switching elements 210 has one end receiving a driving signal and the other end connected to at least one source driving circuit 230.

The timing adjustment unit 221 is configured to provide a voltage signal according to a timing signal, the timing adjustment unit 221 is connected to the plurality of switch elements 210, and is configured to provide a turn-on voltage for the plurality of switch elements 210 according to a plurality of preset timing signals, and the preset timing signals and the switch elements 210 may correspond to each other one to one, so as to control on or off of each switch element 210.

That is to say, in the embodiment of the present application, a plurality of switching elements 210 may be provided for the source driving circuit 230, so that the switching elements 210 connected to the source driving circuit 230 are used to control the time for transmitting the driving signal to the source driving circuit 230, thereby avoiding the problem that in the prior art, the current is too concentrated when the driving signal is simultaneously transmitted to each source driving circuit 230, which causes the peak current of the display device to be too large, and thus reducing the EMI energy generated by the display device.

For example, for 12 source driving circuits 230, 6 switching elements 210 may be provided, and the 6 switching elements 210 may determine the time for transmitting the driving signal to the plurality of source driving circuits 230 to be six time points instead of one time point which is unified, thereby greatly reducing the peak current of the display device due to the simultaneous charging of the source driving circuits 230. If each switching element 210 is connected to 2 source driving circuits 230, the turn-on time of each switching element 210 can be controlled to be different, and the peak current can be theoretically reduced to 1/6 when 6 switching elements 210 are turned on sequentially, thereby greatly improving the external radiation of the EMI energy of the display device. When 12 switching elements 210 are provided, if the 12 switching elements 210 are sequentially turned on, the peak current can be theoretically reduced to 1/12.

In this embodiment, the display device may include a display panel and a circuit board, where the display panel may include a display area and a non-display area surrounding the display area, the display area is provided with pixel units arranged in an array for displaying content to be displayed, the pixel units may be, for example, liquid crystal-based display units, and the pixel units have pixel electrodes 250 for driving the pixel units to emit light, thereby implementing display of the display device. The non-display area of the display panel is used for setting a circuit structure for driving the display panel to display. The Circuit Board may be at least one of a Printed Circuit Board (PCB), a Chip On Film (COF), a Flexible Printed Circuit (FPC), and the like.

The display panel and the circuit board may be bonded together, the display panel 300 may have a first bonding area, the circuit board may have a second bonding area, the first bonding area is disposed in the non-display area, the first bonding area of the display panel and the second bonding area of the circuit board overlap and are fixed together, the first bonding area has a first terminal, the second bonding area has a second terminal, and the first terminal and the second terminal are electrically connected when the display panel 300 and the circuit board are fixed together.

When the circuit board includes a PCB and an FPC, referring to fig. 4, for another structural schematic diagram of a display device provided in an embodiment of the present application, the FPC 410 may connect the display panel 300 and the PCB 420, the display panel 300 may include a display area 3001 and a non-display area surrounding the display area 3001, a first terminal 301 in the non-display area of the display panel 300 is connected to a second terminal 411 in the FPC, a third terminal 412 in the FPC is connected to a fourth terminal 421 in the PCB, the second terminal 411 and the third terminal 412 may be connected to each other through a wiring in the FPC, and other circuits may be connected between the second terminal 411 and the third terminal 412. The PCB is a non-bendable circuit board, the FPC board is a bendable circuit board, and the display device formed by the display panel, the PCB and the FPC board can be bent at the FPC, so that the area of the display device is reduced.

The plurality of source driver circuits 230 and the plurality of switch elements 210 may be disposed in the non-display region, and as shown in fig. 5, for a schematic structural diagram of another display device in the embodiment of the present application, taking two source driver circuits (IC1 and IC2) and two switch elements (first switch 211 and second switch 212) as an example, the plurality of source driver circuits IC1 and IC2 may be respectively connected to the

source lines

241 and 242, and the

source lines

241 and 242 are respectively connected to the plurality of

pixel electrodes

251 and 252, so that the operating state of the pixel units is controlled by the source driver circuits. The pixel electrodes connected to the same source driving circuit may belong to the same region, and specifically, the IC1 is connected to the pixel electrode 251 of the first display region, and the IC2 is connected to the pixel electrode 252 of the second display region.

The timing adjustment unit 221 may be disposed on a circuit board, and the timing adjustment unit 221 and the plurality of

switching elements

211, 212 may be connected through a connection between the display panel and the circuit board. Of course, the timing adjustment unit 221 may be disposed in the non-display region of the display panel so as to be disposed in the non-display region together with the plurality of switching

elements

211 and 212; the plurality of switching

elements

211, 212 may also be disposed on the circuit board so as to be disposed on the circuit board together with the timing adjusting unit 221, and those skilled in the art may set them according to actual situations.

Specifically, the switching element 210 may be connected to the driving signal terminal 200, the driving signal terminal 200 may be a terminal on the display panel, for example, may be a part of the first terminal 301, the driving signal terminal 200 is used to connect to a driving signal generating device, the driving signal generating device may include a voltage generating circuit for generating a driving voltage and a timing acquiring circuit for generating a driving timing, and the driving voltage provided based on the driving timing may be used as the driving signal. That is, in the embodiment of the present application, a plurality of switching elements 210 may be added between the driving signal terminal 200 and the source driving circuit 230, and the timing adjustment unit 221 controls on/off of the plurality of switching elements 210 to control the energization time of the source driving circuit 230. The Timing acquisition circuit may include a Timing control circuit (Tcon). The driving signal generating device may be disposed on the circuit board and connected to some of the second terminals 401.

In the embodiment of the present application, the source driving circuit 230 has a driving end and an output end, and as shown in fig. 6, a schematic structural diagram of another display device provided in the embodiment of the present application is shown, wherein the driving ends of the

source driving circuits

231 and 232 are respectively connected to the

switch elements

211 and 212 to receive driving signals, the output ends are connected to the source lines 241 and 242 to connect to a plurality of pixel units, and when the source driving circuit 230 is turned on, the driving signals can be input to the pixel units. The

source driving circuits

231 and 232 further have control terminals, the control terminals are used for receiving control signals (Gate1), the control signals are used for controlling the on/off of the source driving circuit 230, specifically, the

source driving circuits

231 and 232 may be respectively connected to control

signal terminals

271 and 272, the

control signal terminals

271 and 272 may be terminals on the display panel, for example, may be partial terminals in the first terminal 301, the control signal terminal 301 is used for connecting a control signal generating device, the control signal generating device is used for generating control signals, and may be disposed on the circuit board and connected to partial terminals in the second terminal 401.

One source driving circuit 230 may be connected to a plurality of source lines 240, and thus a plurality of pixel electrodes 250. Specifically, the display area of the display device may include a plurality of sub-areas, and the pixel electrode 250 in one sub-area may be connected to the output terminal of one source driving circuit 230, so that the operating state of the pixel unit in the area is controlled by one source driving circuit. For example, 12 source driving circuits 230 may be provided, the 12 source driving circuits 230 are used to connect the pixel electrodes 250 in 12 sub-regions, and the sub-regions may be rectangular regions or regions with other shapes.

The switching element 210 may have an input terminal for receiving a driving signal, an output terminal connected to the source driving circuit 230, and a control terminal for receiving a turn-on signal for controlling on and off states of the switching element 210. Specifically, the switching element 210 may be a transistor, a source of the transistor is used as an input terminal to receive the driving signal, a drain of the transistor is used as an output terminal to connect to the source driving circuit, a gate of the transistor is used as a control terminal to receive the turn-on signal, and the turn-on signal received by the control terminal may include a turn-on voltage. The Transistor may include a Thin Film Transistor (TFT), such as an Insulated Gate Bipolar Transistor (IGBT) or a Metal Oxide Semiconductor field Effect Transistor (MOSFET, hereinafter referred to as MOS Transistor), a SiC MOSFET (Silicon Carbide MOSFET), and the like. Referring to fig. 7, a schematic structural diagram of another display device in the embodiment of the present application is shown, where the first switch 211 and the second switch 212 are TFTs.

Specifically, the number of the switch elements 210 may be equal to the number of the source driver circuits 230, that is, each switch element 210 may be connected to one source driver circuit 230, as shown in fig. 5 and 7, the IC 1231 is connected to the plurality of pixel electrodes 251 of the first display region through the source line 241, the first switch 211 is connected to the IC 1231, the IC 2232 is connected to the plurality of pixel electrodes 252 of the second display region through the source line 242, and the second switch 212 is connected to the IC 2232.

Specifically, the number of the switching elements 210 may be smaller than the number of the source driving circuits 230, that is, at least one switching element 210 is connected to a plurality of source driving circuits 230, so that the switching element 210 may transmit the driving signal to the plurality of source driving circuits 230 at the same time, which is beneficial to reducing the number of the switching elements 210. Referring to fig. 8, a schematic structural diagram of still another display device according to an embodiment of the present disclosure is shown, wherein an IC 1231 is connected to the plurality of pixel electrodes 251 of the first display region through a source line 241, an IC 3233 is connected to the plurality of pixel electrodes 253 of the third display region through a source line 243, and a first switch 211 is connected to the IC 1231 and the IC 3233; the IC 2232 is connected to the plurality of pixel electrodes 252 of the second display region via the source line 242, and the second switch 212 is connected to the IC 2232. Referring to fig. 9, a schematic structural diagram of still another display device according to an embodiment of the present disclosure is shown, in which an IC 1231 is connected to a plurality of pixel electrodes 251 of a first display region through a source line 241, an IC 3233 is connected to a plurality of pixel electrodes 253 of a third display region through a source line 243, and a first switch 211 is connected to the IC 1231 and the IC 3233; the IC 2232 is connected to the plurality of pixel electrodes 252 in the second display region via the source line 242, the IC 4234 is connected to the plurality of pixel electrodes 254 in the second display region via the source line 244, and the second switch 212 is connected to the IC 2232 and the IC 4234.

In the embodiment of the present application, the source driving circuits 230 connected to the same switching element 210 may be used to connect the pixel electrodes 250 in adjacent sub-regions, that is, the same switching element 210 may be connected to a plurality of adjacent source driving circuits 230, which is favorable for wiring. For example, referring to fig. 8 and 9, the first display area and the third display area are adjacent sub-areas, and in fig. 9, the second display area and the fourth display area are adjacent sub-areas.

Of course, each switching element 210 may be connected to a plurality of source driving circuits 230, and the number of source driving circuits connected to different switching elements may be the same, as shown in fig. 5-7 and 9; the number of source driver circuits connected to different switching elements may also be different, as shown with reference to fig. 8. For example, for 12 source driving circuits 230, 6 switching elements 210 may be provided, and each switching element 210 may be connected to 2 source driving circuits 230; there may be one of the switching elements 210 connected to 3 source driving circuits 230 and the other switching element 210 connected to 1 source driving circuit 230. For 12 source driving circuits 230, 4, 3 or 2 switching elements 210 may be provided, and each switching element may be connected to 3, 4 or 6 source driving circuits 230.

In the embodiment of the present application, the timing adjustment unit 221 may be connected to the plurality of switching elements 210 for providing the plurality of switching elements 210 with the turn-on voltage according to a plurality of preset timing signals, and specifically, the timing adjustment unit 221 may be connected to a control terminal of the switching element 210, for example, a gate of the switching element 210, as shown in fig. 7.

Specifically, the preset timing signal indicates the turn-on time of the switch element 210, and the preset timing signals corresponding to the switch elements 210 are not completely the same, for example, may be completely different. For example, if the turn-on voltage is at a high level, the switch element 210 is turned on, the rising edge corresponding to the preset timing signal corresponds to the turn-on of the switch element 210, and the rising edges in the preset timing signals corresponding to the switch elements 210 may not be at the same time. Referring to fig. 10, a schematic diagram of a preset timing signal in an embodiment of the present application is shown, where regions 1-6 correspond to 6 display regions, each region is provided with one source driving circuit 230, each source driving circuit 230 is connected to one switching element 210, that is, each switching element 210 controls the source driving circuit 230 of one display region to control a pixel unit of the display region, regions 1-6 respectively represent the preset timing signals of the 6 switching elements 210, Gata1 represents the timing of the control signal of the source driving circuit 230, and the high level duration of the control signal is 22 μ sec.

Similarly, the control signal transmitted to the source driving circuit 230 is used to control the on/off state of the source driving circuit 230, for example, when the control signal is at a high level, the source driving circuit 230 is turned on, and the rising edge corresponding to the control signal corresponds to the source driving circuit 230 being turned on.

In the embodiment of the present invention, the rising edge of the predetermined timing signal corresponding to the switch element 210 may be no later than the rising edge of the control signal of the source driving circuit 230, so as to ensure that the control signal can be transmitted to the source line 240 when the source control circuit 220 is turned on. Specifically, the rising edges of the preset timing signals corresponding to the switch elements 210 may be all earlier than the rising edge of the control signal, that is, all the switch elements 210 are turned on earlier than the source driving circuit 230; there may also be a portion of the switching elements 210 corresponding to the rising edge of the preset timing signal corresponding to the rising edge of the control signal at the same time, that is, there is a portion of the switching elements 210 being turned on earlier than the source driving circuit 230, and a portion of the switching elements 210 being turned on simultaneously with the source driving circuit 230. The time difference between the rising edge of the preset timing signal corresponding to the switching element 210 and the rising edge of the control signal is less than or equal to 2 microseconds.

In this embodiment, the circuit board further includes a storage unit 222, and referring to fig. 11, for a structural schematic diagram of still another display device provided in this embodiment of the present application, specifically, the storage unit 222 may be configured to store a group of preset timing signals, where the group of preset timing signals includes a plurality of preset timing signals, and the timing adjustment unit 221 may read the group of preset timing signals from the storage unit 222, so as to provide the on-voltage for the switching element 210. For example, for 6 switching elements 210, the storage unit 222 may store 6 preset timing signals corresponding to the 6 switching elements 210.

Specifically, the storage unit 222 may also be configured to store a plurality of groups of preset timing signals, where each group of preset timing signals includes a plurality of preset timing signals, and the timing adjustment unit 221 may select one group of preset timing signals from the storage unit 222, so as to provide the open-area voltage for the switching element 210.

The multiple groups of preset timing signals may correspond to different scenarios under the fixed connection relationship between the fixed number of switching elements 210 and the fixed number of source driving circuits 230, for example, each group of preset timing signals includes 6 preset timing signals, and may be applicable to different usage scenarios under the fixed connection relationship between the 6 switching elements 210 and the 12 source driving circuits 230; the plurality of sets of preset timing signals may also correspond to a scenario of multiple connection relationships between a fixed number of switching elements 210 and a fixed number of source driving circuits 230, for example, each set of preset timing signals includes 6 preset timing signals, and may be applicable to different usage scenarios of fixed connection relationships between 6 switching elements 210 and other numbers (e.g., 8, 18, etc.) of source driving circuits 230; the plurality of sets of preset timing signals may also correspond to different numbers of switching elements 210 or different numbers of source driving circuits 230, wherein one set of the plurality of sets of preset timing signals corresponds to 6 switching elements 210 connected to 12 source driving circuits 230, and the other set corresponds to 4 switching elements 210 connected to 12 source driving circuits 230.

The embodiment of the application provides a display device, which comprises a plurality of source electrode driving circuits, a plurality of switching elements and a time sequence adjusting unit, wherein each switching element is connected with at least one source electrode driving circuit, the switching elements receive driving signals, the driving signals are transmitted to the source electrode driving circuits connected with the switching elements when the switching elements are started, the time sequence adjusting unit is connected with the switching elements and used for providing starting voltages for the switching elements according to a plurality of preset time sequence signals, namely, the switching elements can be arranged for the source electrode driving circuits, so that the time for transmitting the driving signals to the source electrode driving circuits is controlled, the problem that in the prior art, the current is too concentrated and the peak current of the display device is too large when the driving signals are transmitted to the source electrode driving circuits simultaneously is avoided, and the EMI energy generated by the display device is reduced.

Based on the display device provided in the embodiment of the present application, the embodiment of the present application further provides a vehicle, and as shown in fig. 12, for a schematic view of a vehicle provided in the embodiment of the present application, the vehicle may include the display device provided in the embodiment of the present application, the vehicle may be an automobile, an airplane, a ship, or the like, and the display device provided in the embodiment of the present application may be used as an instrument panel 34 or a central control display screen 35.

When introducing elements of various embodiments of the present application, the articles "a," "an," "the," and "said" are intended to mean that there are one or more of the elements. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements other than the listed elements.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.

The foregoing is merely a preferred embodiment of the present application and, although the present application discloses the foregoing preferred embodiments, the present application is not limited thereto. Those skilled in the art can now make numerous possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments, using the methods and techniques disclosed above, without departing from the scope of the claimed embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application still fall within the protection scope of the technical solution of the present application without departing from the content of the technical solution of the present application.

Claims

1. A display device, comprising:

2. The display device according to claim 1, wherein the display device comprises a display panel and a circuit board, the source driving circuit and the switching element are provided in a non-display region of the display panel, and the timing adjusting unit is provided on the circuit board.

3. The display device according to claim 1, wherein the switching element is a transistor, the timing adjustment unit is connected to a gate of the transistor, a source of the transistor receives the driving signal, and a drain of the transistor is connected to the source driving circuit.

4. The display device according to claim 1, wherein the source driver circuit has a control terminal and a driving terminal, the control terminal receives a control signal, the driving terminal is connected to the switching element, and the control signal is used to control on/off of the source driver circuit.

5. The display device according to claim 4, wherein the switching element is turned on when the turn-on voltage is at a high level, the source driving circuit is turned on when the control signal is at a high level, and a rising edge of a predetermined timing signal corresponding to the switching element is not later than a rising edge of the control signal.

6. The display device according to claim 5, wherein a time difference between a rising edge of the preset timing signal corresponding to the switching element and a rising edge of the control signal is less than or equal to 2 microseconds.

7. The display device according to any one of claims 1 to 6, wherein the number of the switching elements is smaller than the number of the source driver circuits.

8. The display device according to claim 7, wherein the number of source driver circuits connected to each switching element is the same.

9. The display device according to claim 8, wherein the source driver circuit has an output terminal for connecting to a pixel electrode; the display panel comprises a plurality of display areas, and the pixel electrode in each display area is commonly connected with the output end of one source electrode driving circuit; and a plurality of source driving circuits connected to the same switching element for connecting the pixel electrodes in the adjacent display regions.

10. The display device according to any one of claims 1 to 6, wherein the circuit board further comprises a storage unit, the storage unit stores therein a plurality of preset timing signals, and the timing adjustment unit is further configured to read the plurality of preset timing signals from the storage unit.

11. The display device according to any one of claims 1 to 6, wherein the circuit board further comprises a storage unit, the storage unit stores a plurality of groups of preset timing signals, each group of preset timing signals comprises a plurality of preset timing signals, and the timing adjustment unit is further configured to select one group of preset timing signals from the storage unit.

12. A vehicle, characterized by comprising a display device according to any one of claims 1-11.