Display device and driving integrated chip

Abstract

The utility model relates to a display device and a driving integrated chip, the display device comprises a first power supply circuit, a display panel, a backlight assembly, a proportional converter and a control circuit, and the control circuit controls the first power supply circuit to adjust output first power supply voltage according to power supply feedback information of a light emitting unit group. The first power supply voltage is converted according to the preset proportion of the proportional converter to obtain the target second power supply voltage so as to supply power to the backlight assembly, so that the whole backlight LED works under the reasonable input voltage. On one hand, two-stage conversion is formed through output of the first power supply circuit and the proportional converter, power supply voltage can be increased, current can be reduced, transmission loss can be reduced, and meanwhile the requirement for connecting line impedance is lowered; and on the other hand, the voltage of the LED lamp is controlled to be at a relatively low level, so that the cost is reduced, and the efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display device and a driving integrated chip. BACKGROUND

[0002] With the super multi-partition backlight technology, the number of LED lamps that need to be controlled in the backlight source is increasing, the number of partitions is also increasing, and the cost of maintaining a high voltage for the power supply voltage of the LED lamp will be higher and higher.

[0003] In order to reduce the cost, it is necessary to maintain the power unchanged, and to supply power to the LED lamp with a lower power supply voltage, however, this requires a large increase in current, resulting in large transmission voltage drop and transmission loss. CONTENT OF THE UTILITY MODEL

[0004] The embodiments of the present application provide a display device and a driving integrated chip, which can reduce transmission voltage drop and transmission loss.

[0005] The first aspect of the present application provides a display device, the display device comprising:

[0006] A first power supply circuit configured to provide a first power supply voltage;

[0007] A display panel;

[0008] A backlight assembly located on the light entrance side of the display panel, the backlight assembly comprising:

[0009] At least one light emitting unit group;

[0010] At least one driving group, the driving group comprising:

[0011] At least one driving circuit, the driving circuit being connected with the light emitting unit group, the light emitting unit groups connected by different driving circuits being different, the driving circuit being configured to output a driving signal;

[0012] A proportional converter connected with the first power supply circuit and the light emitting unit group respectively, configured to perform a preset proportional conversion on the first power supply voltage to obtain a second power supply voltage; wherein the light emitting unit group is configured to emit light based on the second power supply voltage and the driving signal, and output power supply feedback information; and

[0013] A control circuit connected with the first power supply circuit and the light emitting unit group respectively, configured to:

[0014] Based on the power supply feedback information of the light emitting unit group, control the first power supply circuit to adjust the first power supply voltage outputted by the first power supply circuit.

[0015] In the technical solution, the display device comprises a first power supply circuit, a display panel, a backlight assembly, a proportional converter and a control circuit. The backlight assembly comprises at least one light emitting unit group and at least one drive group, and the drive group comprises at least one drive circuit. The drive circuit is configured to output a drive signal; the proportional converter is configured to perform preset proportional conversion on the first power supply voltage to obtain a second power supply voltage; the light emitting unit group is configured to emit light based on the second power supply voltage and the drive signal and output power supply feedback information; and the control circuit controls the first power supply circuit to adjust the first power supply voltage output by the first power supply circuit according to the power supply feedback information of the light emitting unit group, so that the first power supply voltage is subjected to preset proportional conversion by the proportional converter to obtain a target second power supply voltage, and the light emitting unit group is powered by the target second power supply voltage, so that the LEDs of the entire backlight work at a reasonable input voltage. On the one hand, two-stage conversion is formed by the first power supply circuit and the proportional converter, which can increase the power supply voltage, reduce the current and lower the transmission loss, while reducing the demand for the impedance of the connecting line. On the other hand, the voltage of the LED lamp is controlled to a relatively low level, which reduces the cost and improves the efficiency. Moreover, when the voltage of the LED lamp is controlled to a relatively low level, the drive circuit corresponding to the LED lamp can use a semiconductor process with a relatively low withstand voltage, which greatly reduces the design cost of the drive circuit.

[0016] In one embodiment, the number of proportional converters is at least one; the proportional converter is connected to the power supply end of the drive circuit of at least one drive group and the power supply end of the light emitting unit group corresponding to the connected drive group, and each proportional converter supplies power to the drive circuit and the light emitting unit group.

[0017] In the technical solution, each proportional converter is connected to the power supply end of the drive circuit of at least one drive group and the power supply end of the light emitting unit group corresponding to the connected drive group, so that each proportional converter can perform preset proportional conversion on the received first power supply voltage to obtain a second power supply voltage, and supply power to the connected drive circuit and light emitting unit group, so that the drive circuit drives the light emitting assembly to provide a light source, and the maintenance cost of the backlight assembly power supply voltage and the design cost of the drive circuit are reduced.

[0018] In one embodiment, the proportional converter and the connected drive circuit form an integrated circuit, and the integrated circuit is configured with a voltage input port, a voltage output port, a drive input port and a drive output port; the voltage input port is connected to the first power supply circuit and the proportional converter, the voltage output port is connected to the proportional converter and the light emitting unit group, the drive input port receives backlight drive data and is connected to the drive circuit, and the drive output port is connected to the light emitting unit group.

[0019] The proportional converter receives the first power supply voltage through the voltage input port and outputs the second power supply voltage to the connected light emitting unit group through the voltage output port.

[0020] The driving circuit receives the second power supply voltage through the proportional converter, receives backlight driving data through the driving input port, and provides the driving signal to the connected light emitting unit group through the driving output port when the second power supply voltage and the backlight driving data are received, the driving signal being determined based on the backlight driving data.

[0021] In the above technical solution, the proportional converter and the driving circuit form an integrated circuit, the integrated circuit has proportional conversion function and driving function, and can provide the driving signal to the light emitting unit group based on the received first power supply voltage and backlight driving data, so that the backlight assembly provides a light source, and on the basis of reducing the maintenance cost of the backlight assembly power supply voltage and the design cost of the driving circuit, the integration of the circuit can be improved, the complexity of the system can be effectively reduced, the overall area occupied by the circuit can be reduced, and the volume can be reduced. It can also reduce the transmission loss between the proportional converter and the driving circuit.

[0022] In one of the embodiments, the proportional converter is also connected to the data end of at least one driving circuit of at least one driving group to transmit the received backlight driving data to the driving circuit of the driving group.

[0023] The driving circuit provides the driving signal to the connected light emitting unit group when the second power supply voltage and the backlight driving data are received, and the driving signal is determined based on the backlight driving data.

[0024] In the above technical solution, the proportional converter not only has proportional conversion function, but also has data transmission function, and can transmit the converted second power supply voltage and the received backlight driving data to each driving circuit of the connected driving group, so that each driving circuit provides the driving signal to the connected light emitting unit group based on the received backlight driving data under the action of the second power supply voltage, and drives the light emitting unit group to output a light source. On the basis of reducing the maintenance cost of the backlight assembly power supply voltage and the design cost of the driving circuit, the transmission wiring of the backlight driving data can also be shortened, and the data distribution cost of the control circuit can be reduced.

[0025] In one of the embodiments, the proportional converter is also configured to stop outputting the second power supply voltage when the backlight driving data carries a standby instruction.

[0026] In the technical solution, the proportional converter has the proportional conversion function and the data transmission function, and can transmit the converted second power supply voltage and the received backlight driving data to each driving circuit of the connected driving group, so that each driving circuit provides a driving signal to the connected light emitting unit group based on the received backlight driving data under the action of the second power supply voltage, and the light emitting unit group outputs a light source. On the basis of reducing the maintenance cost of the backlight assembly power supply voltage and the design cost of the driving circuit, the transmission wiring of the backlight driving data can be shortened, and the data distribution cost of the control circuit can be reduced.

[0027] In one of the embodiments, the proportional converter and the connected driving circuit form an integrated circuit, and the integrated circuit is configured with a voltage input port, a voltage output port, a driving input port and a driving output port; the voltage input port is connected with the first power supply circuit, the voltage output port is connected with the light emitting unit group, the driving input port accesses the backlight driving data, and the driving output port is connected with the light emitting unit group.

[0028] The proportional converter receives the first power supply voltage through the voltage input port, outputs the second power supply voltage to the connected light emitting unit group through the voltage output port, and receives the backlight driving data through the driving input port.

[0029] The driving circuit receives the second power supply voltage and the backlight driving data through the proportional converter, and provides the driving signal to the connected light emitting unit group through the driving output port when the second power supply voltage and the backlight driving data are received.

[0030] In the technical solution, the proportional converter and the driving circuit form an integrated circuit, and the integrated circuit has the proportional conversion function and the driving function, can provide a driving signal to the light emitting unit group based on the received first power supply voltage and the backlight driving data, so that the backlight assembly provides a light source. On the basis of reducing the maintenance cost of the backlight assembly power supply voltage and the design cost of the driving circuit, the integration degree of the circuit can be improved, the complexity of the system can be effectively reduced, the overall occupied area of the circuit can be reduced, and the volume can be reduced. The transmission loss between the proportional converter and the driving circuit can also be reduced.

[0031] In one of the embodiments, the proportional converter includes:

[0032] A proportional conversion unit, an input end of the proportional conversion unit is connected with the voltage input port, and output ends of the proportional conversion unit are respectively connected with the voltage output port and a power supply end of the driving circuit.

[0033] a data transmission unit, an input end of the data transmission unit being connected with the driving input port, and data output ends of the data transmission unit being connected with data ends of the driving circuit and a data end of the proportional converter respectively;

[0034] The data transmission unit is configured to transmit the received backlight driving data to the proportional conversion unit and the driving circuit, the proportional conversion unit is configured to perform preset proportional conversion on the received first power supply voltage to obtain the second power supply voltage and output the second power supply voltage, and in a case where the backlight driving data carries a standby instruction, the proportional conversion unit stops outputting the second power supply voltage.

[0035] In the technical solution, the proportional converter includes the proportional conversion unit and the data transmission unit. On one hand, the proportional converter can transmit the backlight driving data to the proportional conversion unit and the driving circuit through the data transmission unit. Thus, the proportional converter has the data transmission function, can replace part of the data distribution function of the control circuit, reduces the distribution function of the control circuit, and reduces the data distribution cost of the control circuit. On the other hand, the proportional converter can obtain the second power supply voltage by performing preset proportional conversion on the received first power supply voltage through the proportional conversion unit and output the second power supply voltage to the driving circuit. In addition, the proportional conversion unit can stop outputting the second power supply voltage when the received backlight driving data carries a standby instruction. Thus, the proportional converter has the controllable proportional conversion function, can flexibly adjust the output condition, and is suitable for different power supply requirements.

[0036] In one of the embodiments, the control circuit is further configured to control the driving circuit to obtain the power supply state of the light emitting unit group and receive power supply feedback information fed back by the driving circuit and representing the power supply state.

[0037] In the technical solution, the control circuit can control the driving group to obtain the power supply state of the light emitting unit group and receive the power supply feedback information fed back by the driving circuit and representing the power supply state, so as to output the voltage adjustment control signal to the first power supply circuit based on the power supply feedback information, and adjust the value of the first power supply voltage output by the first power supply circuit. Thus, the voltage control of the first power supply circuit is realized.

[0038] In one of the embodiments, the display device further includes at least one lamp panel, the lamp panel is provided with the light emitting unit group and the driving group, and the proportional converter connected with the light emitting unit group and the driving group on the lamp panel is arranged close to the lamp panel or on the lamp panel.

[0039] In the technical solution, the proportional converter is arranged close to the lamp panel, which facilitates the wiring between the light emitting unit group, the driving group, and the proportional converter on the lamp panel, simplifies the wiring, and reduces the cost.

[0040] In one of the embodiments, each of the lamp panels is provided with one of the proportional converters and one of the driving groups, the driving group comprising a plurality of the driving circuits arranged in an array, and the light emitting unit group comprising a plurality of the light emitting components arranged in an array.

[0041] The proportional converter, the driving group and the light emitting unit group are arranged on the same side of the lamp panel and located in a region close to the first power supply circuit and the control circuit.

[0042] In the above technical solution, on the one hand, the proportional converter is arranged on the lamp panel, and the second power supply voltage can be provided to the light emitting components and the driving circuits through the wirings on the lamp panel, so as to reduce the line impedance, improve the power supply efficiency, reduce the number of connection lines and simplify the assembly of the display device; on the other hand, the proportional converter is arranged in the edge region of the lamp panel, which is conducive to shortening the wirings between the proportional converter and the control circuit and the first power supply circuit and reducing the cost.

[0043] In one of the embodiments, each of the lamp panels is provided with a plurality of the proportional converters and a plurality of the driving groups, the driving group comprising a plurality of the driving circuits arranged in an array, and the light emitting unit group comprising a plurality of the light emitting components arranged in an array.

[0044] The proportional converters, the driving groups and the light emitting unit groups are arranged on the same side of the lamp panel, and the plurality of the proportional converters are distributedly arranged, and the light emitting unit group and the driving group connected to the same proportional converter are arranged close to each other.

[0045] In the above technical solution, the plurality of proportional converters are distributed in a plurality of regions on the same lamp panel, and the proportional converter in each region can be arranged close to the light emitting unit group and the driving group connected thereto, and the proportional converter in each region only needs to provide the second power supply voltage to the driving circuits and the light emitting components in the region, which is conducive to using proportional converters with smaller specifications to reduce the cost, shortening the connection wirings between the proportional converter and the driving circuit and the light emitting component, facilitating the layout of the wirings, reducing the size of the overall device, improving the flexibility of the circuit layout, and facilitating the heat dissipation of the lamp panel.

[0046] The second aspect of the present application provides a display device, which comprises:

[0047] a first power supply circuit configured to provide a first power supply voltage;

[0048] a display panel;

[0049] a backlight component located on the light incident side of the display panel, the backlight component comprising:

[0050] at least one light emitting unit group;

[0051] at least one driving integrated circuit, respectively connected with the first power supply circuit and the light emitting unit group, configured to perform preset proportional conversion on the first power supply voltage to obtain a second power supply voltage, and configured to output a driving signal to the connected light emitting unit group; wherein the light emitting unit group outputs the light source and power supply feedback information when receiving the second power supply voltage and the driving signal;

[0052] The at least one driving integrated circuit is further configured to adjust the preset proportion based on the power supply feedback information of the light emitting unit group, so as to adjust the second power supply voltage.

[0053] In the above technical solution, the display device includes a first power supply circuit, a display panel, and a backlight assembly including at least one light emitting unit group and at least one driving integrated circuit. On the one hand, the driving integrated circuit has a driving function to output a driving signal to the LED lamp, and has a proportional conversion function and an adjustment function of a preset proportion, so that the power supply voltage is improved, the current is reduced, the transmission loss is reduced, the demand for the impedance of the connection line is reduced, and the preset proportion is adjusted based on the power supply feedback information of the light emitting unit group to adjust the second power supply voltage. The control of the power supply can be upgraded to closed-loop control, the driving integrated circuit can be finely controlled to perform preset proportional conversion, the power supply efficiency is further improved, the system architecture is simplified, and the power supply feedback information of the backlight assembly does not need to be fed back as a whole. On the other hand, the voltage of the LED lamp is controlled to a relatively low level, the cost is reduced, and the efficiency is improved. When the voltage of the LED lamp is controlled to a relatively low level, the driving circuit corresponding to the LED lamp can use a semiconductor process with relatively low voltage resistance, which greatly reduces the design cost of the driving circuit.

[0054] The third aspect of the present application provides a driving integrated chip, which is configured with a voltage input port, a voltage output port, a driving input port and a driving output port. The voltage input port is configured to receive a first power supply voltage of a first power supply circuit. The voltage output port is connected with a power supply end of a light emitting unit group. The driving input port is configured to receive backlight driving data. The driving output port is connected with a driving end of the light emitting unit group. The driving integrated chip includes:

[0055] A proportional conversion circuit is connected with the voltage input port and the voltage output port, and is configured to perform preset proportional conversion on the first power supply voltage to obtain a second power supply voltage, and output the second power supply voltage to the light emitting unit group through the voltage output port.

[0056] a driving circuit connected with the proportional conversion circuit, the driving input port and the driving output port, configured to provide the driving signal to the light emitting unit group connected with the driving output port based on the backlight driving data and the second power supply voltage.

[0057] The light emitting unit group outputs the light source based on the second power supply voltage and the driving signal.

[0058] In the technical solution, the driving integrated chip is configured with a voltage input port, a voltage output port, a driving input port and a driving output port. The driving integrated chip includes a proportional conversion circuit and a driving circuit. On one hand, the driving circuit has a driving function and can output a driving signal to the LED. The proportional conversion circuit has a preset proportional conversion function. The driving integrated chip can form a two-stage conversion through the first power supply circuit. Thus, the power supply voltage can be improved, the current can be reduced, the transmission loss can be reduced, the demand for the impedance of the connecting line can be reduced, the control circuit outside the chip can control the output of the first power supply circuit based on the power supply feedback information of the light emitting unit group, and the power supply efficiency can be further improved. On the other hand, the voltage of the LED lamp is controlled to a relatively low level, the cost is reduced, and the efficiency is improved. When the voltage of the LED lamp is controlled to a relatively low level, the driving circuit corresponding to the LED lamp can use a semiconductor process with a relatively low voltage resistance, and the design cost of the driving circuit is greatly reduced.

[0059] The fourth aspect of the present application provides a driving integrated chip. The driving integrated chip is configured with a voltage input port, a voltage output port, a driving input port and a driving output port. The voltage input port is configured to receive a first power supply voltage. The voltage output port is connected with a power supply end of a light emitting unit group. The driving input port is configured to receive backlight driving data. The driving output port is connected with a driving end of the light emitting unit group. The driving integrated chip includes:

[0060] a proportional conversion circuit connected with the voltage input port and the voltage output port, configured to perform a preset proportional conversion on the first power supply voltage, obtain a second power supply voltage, and output the second power supply voltage to the light emitting unit group through the voltage output port;

[0061] a data transmission and logic circuit connected with the proportional conversion circuit and the driving input port, configured to receive the backlight driving data.

[0062] A current control circuit is connected with the data transmission and logic circuit and the driving output port respectively, configured to acquire a driving signal based on backlight driving data, and output the driving signal to the light emitting unit group through the driving output port, and acquire a power supply state of the light emitting unit group through the driving output port, and output a feedback signal representing the power supply state to the data transmission and logic unit;

[0063] The light emitting unit group outputs the light source when receiving the second power supply voltage and the driving signal; the data transmission and logic circuit determines power supply feedback information of the light emitting unit group according to the feedback signal, and controls the proportional conversion circuit to adjust the preset proportion according to the power supply feedback information, so as to adjust the second power supply voltage.

[0064] In the above technical solution, the driving integrated chip is configured with a voltage input port, a voltage output port, a driving input port and a driving output port, and includes a proportional conversion circuit, a data transmission and logic circuit and a current control circuit. On the one hand, the driving integrated chip has a driving function and can output a driving signal to the LED lamp, and has a proportional conversion function and an adjustment function of a preset proportion, so that the power supply voltage is improved, the current is reduced, the transmission loss is reduced, the demand for the impedance of the connection line is reduced, and the preset proportion can be adjusted based on the power supply feedback information of the light emitting unit group to adjust the second power supply voltage. The control of the power supply can be upgraded to closed-loop control, and the driving integrated circuit can be finely controlled for preset proportion conversion, further improving the power supply efficiency, simplifying the system architecture, and eliminating the need for overall feedback of the power supply feedback information of the backlight assembly. On the other hand, the voltage of the LED lamp is controlled to a relatively low level, which reduces the cost and improves the efficiency. Moreover, when the voltage of the LED lamp is controlled to a relatively low level, the driving circuit corresponding to the LED lamp can use a semiconductor process with relatively low voltage resistance, which greatly reduces the design cost of the driving circuit. BRIEF DESCRIPTION OF DRAWINGS

[0065] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0066] Figure 1 The structural schematic diagram of the display device provided by some embodiments of the present application is shown in the figure;

[0067] Figure 2 The structural schematic diagram of the display device provided by some embodiments of the present application is shown in the figure;

[0068] Figure 3 Structure diagram of a display device provided for some embodiments of the present application;

[0069] Figure 4 Structure diagram of a display device provided for some embodiments of the present application;

[0070] Figure 5 Structure diagram of a display device provided for some embodiments of the present application;

[0071] Figure 6 Structure diagram of a display device provided for some embodiments of the present application;

[0072] Figure 7 Structure diagram of a display device provided for some embodiments of the present application;

[0073] Figure 8 Structure diagram of a display device provided for some embodiments of the present application;

[0074] Figure 9 Structure diagram of a display device provided for some embodiments of the present application;

[0075] Figure 10 Structure diagram of a display device provided for some embodiments of the present application;

[0076] Figure 11 Structure diagram of a display device provided for some embodiments of the present application;

[0077] Figure 12 Structure diagram of a display device provided for some embodiments of the present application;

[0078] Figure 13 Structure diagram of a display device provided for some embodiments of the present application;

[0079] Figure 14 Structure diagram of a display device provided for some embodiments of the present application;

[0080] Figure 15 Structure diagram of a driving integrated chip provided for some embodiments of the present application;

[0081] Figure 16 Structure diagram of a driving integrated chip provided for some embodiments of the present application. DETAILED DESCRIPTION

[0082] The embodiments will be described in detail below with reference to examples thereof as illustrated in the accompanying drawings. In the following description, like reference characters designate like or similar elements in different views of the drawings. The embodiments described in the following examples do not represent all of the implementations consistent with the present application. Rather, they are merely examples consistent with some aspects of the present application as detailed in the appended claims.

[0083] It should be noted that the brief description of terms in the present application is only for the convenience of understanding the following description of the embodiments, and is not intended to limit the embodiments of the present application. Unless otherwise specified, these terms should be understood according to their ordinary and customary meanings.

[0084] The terms "first", "second", "third", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar or like objects or entities, and do not necessarily mean a specific order or sequence, unless otherwise noted. It should be understood that the terms used in this way can be interchanged under appropriate circumstances.

[0085] The term "connected" can include electrical connection or coupling, and when an element is considered to be "connected" to another element, it can be directly connected to the other element or a middle element can exist at the same time.

[0086] The terms "include" and "have" and any variations thereof are intended to cover but not exclusively include, for example, a product or device that includes a list of components does not have to be limited to all the components clearly listed, but can include other components not clearly listed or inherent to such products or devices.

[0087] The term "module" refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and / or software code that can perform the functions associated with that element.

[0088] In the embodiments of the present application, the display device generally refers to a device having picture display and data processing capabilities. For example, the display device includes but is not limited to a smart television, a laser projection device, a monitor, an electronic bulletin board, an electronic table, a mobile terminal, a computer, a monitor, an advertising screen, a wearable device, a virtual reality device, an augmented reality device, etc.

[0089] Figure 1 A structural schematic diagram of a display device 200 provided for some embodiments of the present application is shown.

[0090] In one of the embodiments, the display device 200 comprises a display panel 210, the display panel 210 comprises liquid crystal molecules, the liquid crystal molecules are configured to deflect based on the received processed display data.

[0091] In one of the embodiments, the display device 200 comprises a backlight assembly 220, the backlight assembly 220 is configured to emit light based on backlight driving data. The display panel 210 can display a picture based on the backlight provided by the backlight assembly 220.

[0092] In one of the embodiments, the display device 200 comprises a control circuit 230, the control circuit 230 is configured to receive a video input signal or an image input signal, obtain backlight brightness data and display data from the video input signal or the image input signal, and output the backlight brightness data and the display data after performing format conversion, timing control and other processing on the backlight brightness data and the display data.

[0093] In one of the embodiments, referring to the circuit structure shown in Figure 2 , the control circuit 230 can comprise a system on chip (SOC) 231, the system on chip 231 is configured to obtain a video input signal or an image input signal (hereinafter referred to as an input signal) from an external input port or a network port, and perform format conversion, data processing, image rendering and other operations on the input signal.

[0094] In one of the embodiments, the system on chip 231 is configured to generate backlight brightness data and display data based on the video input signal or the image input signal.

[0095] In one of the embodiments, referring to the circuit structure shown in Figure 2 , the control circuit 230 can comprise a timing controller (Tcon) 232, which is electrically connected to the system on chip 231 and is configured to obtain display intermediate data, process the display intermediate data, and output display data in a timing manner. The display intermediate data is data that cannot be directly processed by the display panel 210, and the display data is data that can be processed by the display panel 210.

[0096] In one of the embodiments, the timing controller 232 is electrically connected to the display panel 210 and is configured to map the display data to the positions of the liquid crystal molecules, so that the display data obtained by the display panel is the data that needs to be displayed by the display panel.

[0097] In one of the embodiments, referring to the circuit structure shown in Figure 2As shown in the circuit structure, the control circuit 230 can include a backlight controller (BCON) 233 or a dimming controller (DCON), which is electrically connected to the system chip 231 and configured to obtain processing data associated with the backlight brightness data from the system chip 231 and output backlight driving data according to the processing data.

[0098] The backlight controller 233 is mainly configured to control the overall brightness of the backlight assembly 220 to ensure the consistency and stability of the backlight, and the dimming controller is configured to achieve finer brightness adjustment, especially local dimming, which can provide independent dimming control for different partitions or regions of the backlight and dynamically adjust the backlight brightness according to the picture content to achieve better contrast.

[0099] In one embodiment, the control circuit 230 is electrically connected to the timing controller 232 and configured to obtain the backlight brightness data from the timing controller 232 and output the backlight driving data according to the processing data. Figure 3 As shown in the circuit structure, the backlight controller 233 and the timing controller 232 are electrically connected and configured to obtain the backlight brightness data from the timing controller 232 and output the backlight driving data according to the processing data.

[0100] In one embodiment, the backlight controller 233 is electrically connected to the backlight assembly 220, and the backlight control circuit 233 is configured to map the backlight driving data to the positions of the light-emitting regions (also referred to as partitions) so that each partition obtains the backlight driving data for driving the light-emitting data.

[0101] In one embodiment, the control circuit 230 is electrically connected to the timing controller 232 and configured to obtain the backlight brightness data from the timing controller 232 and output the backlight driving data according to the processing data. Figure 2 As shown in the circuit structure, the backlight assembly 220 includes at least one driving group 221 and a light-emitting unit group 222, the at least one driving group 221 and the control circuit 230 are electrically connected, each driving group 221 includes at least one driving circuit 2210, the driving circuit 2210 and the light-emitting unit group 222 are connected, and the driving circuit 2210 is configured to generate a driving signal based on the backlight driving data, and the driving signal is used to drive the light-emitting unit group 222 connected to the driving circuit 2210 to emit light.

[0102] In one of the embodiments, the backlight assembly 220 is provided with a plurality of lamp panels, and the plurality of lamp panels emit light jointly after being spliced to provide backlight for the display panel 210. Each lamp panel can include a plurality of partitions. Each partition includes at least one driving group 221 and a light emitting unit group 222. The driving circuit 2210 of each partition is connected with the light emitting unit group 222 and the backlight controller 233 respectively, can receive backlight driving data sent by the backlight controller 233, generate a driving signal based on the backlight driving data, drive the lamp beads in the corresponding light emitting unit group 222 to emit light, and realize local backlight control of the backlight assembly 220, that is, local dimming, so as to realize more accurate regional light control and make the screen brightness more uniform and harmonious.

[0103] In one of the embodiments, at least one lamp bead is electrically connected to form the light emitting unit group 222, and the light emitting unit group 222 and one driving end of the driving circuit 2210 are electrically connected, and are configured to emit light based on the driving signal.

[0104] In one of the embodiments, in the light emitting unit group 222, at least one lamp bead is connected in series to form a lamp string, the connection process is simple, the production cost is low, and the layout is convenient.

[0105] In one of the embodiments, in the light emitting unit group 222, at least one lamp bead is connected in parallel, and the working states of the lamp beads do not affect each other.

[0106] In one of the embodiments, in the light emitting unit group 222, at least one lamp bead is connected in series to form a lamp string, and at least one lamp string is connected in parallel, so as to balance the simple implementation of the connection process and the stability of the lamp bead light emission.

[0107] In one of the embodiments, the plurality of lamp beads in the backlight assembly 220 are arranged in an array, the lamp string is a lamp string composed of lamp beads connected in series from left to right or from right to left, or a lamp string composed of lamp beads connected from top to bottom or from bottom to top, or a lamp string composed of lamp beads connected in a preset order (for example, rotation, bending, etc.), for adapting to the display order of the display panel 210, so as to guarantee the display quality of the display device.

[0108] In one of the embodiments, the lamp bead can be composed of MiniLED, MicroLED, WLED, RGB-LED, GB-rLED or QLED (quantum dot).

[0109] In one of the embodiments, the display device 200 includes a first power supply circuit 240 connected with the control circuit 230, the backlight assembly 220 and the display panel 210 respectively. The first power supply circuit 240 is configured to provide corresponding power supply voltages for the control circuit 230, the display panel 210 and the backlight assembly 220.

[0110] In one of the embodiments, the first power supply circuit 240 is connected with the timing controller 232, the system chip 231 and the backlight controller 233 in the control circuit 230 respectively, and the first power supply circuit 240 is configured to provide corresponding power supply voltages for the timing controller 232, the system chip 231 and the backlight controller 233.

[0111] In one of the embodiments, the first power supply circuit 240 is connected with the power supply ends of the driving circuit 2210 and each light unit group 222 in the backlight assembly 20, and is configured to provide a first power supply voltage. The driving circuit 2210 generates a driving signal according to the received backlight driving data under the action of the first power supply voltage, and outputs the driving signal to the light unit group 222. The light unit group outputs a light source under the action of the first power supply voltage and the driving of the driving signal of the driving circuit 2210.

[0112] With the super multi-zone backlight technology, the number of LED lamps that need to be controlled in the backlight source is increasing, the number of zones is also increasing, and the cost of maintaining a high voltage for the power supply voltage of the LED lamp is increasing, for example, maintaining at about 12-24V, which increases the design difficulty of the LED lamp and reduces the light emitting efficiency of the LED lamp. In order to reduce the cost, it is necessary to maintain the power unchanged, and to supply power to the LED lamp by using a lower power supply voltage. However, this results in a significant increase in the total current of the system, resulting in large transmission voltage drop and transmission loss, and the risk of burning the connection line.

[0113] Therefore, some embodiments of the present application provide a display device to solve at least one of the above technical problems. The technical solutions of the present application will be described in detail below in combination with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments. In order to facilitate explanation and description, the control circuit in the following embodiments can be any one of the system chip, the timing controller and the backlight controller mentioned in the above embodiments. It can be understood that the foregoing controllers are only examples and are not limited.

[0114] In one of the embodiments, referring to the circuit structure shown in Figure 4 The display device includes a display panel 310, and the related description of the display panel 310 can be referred to the above embodiments, which will not be described here.

[0115] In one of the embodiments, referring to the circuit structure shown in Figure 4As shown in the circuit structure, the display device comprises a backlight assembly 320 located at a side away from the display surface of the display panel 310, the backlight assembly 320 comprises at least one driving group 321 and at least one light emitting unit group 322, the driving group 321 can comprise at least one driving circuit 3210, the driving circuit 3210 is connected with the light emitting unit group 322, the light emitting unit groups 322 connected by different driving circuits 3210 are different, and the driving circuit 3210 is configured to output a driving signal. The related descriptions of the backlight assembly 320, the driving group 321, the driving circuit 3210 and the light emitting unit group 322 can refer to the above-mentioned embodiments, and will not be repeated here.

[0116] In one of the embodiments, referring to Figure 4 As shown in the circuit structure, the display device comprises a control circuit 330 and a first power supply circuit 340, the control circuit 330 is connected with the light emitting unit group 322 and the first power supply circuit 340 respectively, and the control circuit 330 can control the first power supply circuit 340 to adjust the first power supply voltage output based on the power supply feedback information of the light emitting unit group 322. The related description of the first power supply circuit 340 can refer to the above-mentioned embodiments, and will not be repeated here.

[0117] In one of the embodiments, referring to Figure 4 As shown in the circuit structure, the display device comprises a proportion converter 350 connected with the first power supply circuit 340 and the light emitting unit group 322 respectively, and configured to perform preset proportion conversion on the first power supply voltage to obtain a target second power supply voltage. The light emitting unit group 322 is configured to emit light based on the second power supply voltage and the driving signal, and output power supply feedback information.

[0118] The proportion converter 350 can convert the first power supply voltage according to the preset conversion proportion, so that the second power supply voltage output changes accordingly, thereby achieving the effect of controlling the power supply voltage of the LED lamp.

[0119] For example, the control circuit 330 can generate a voltage control signal by detecting the power supply feedback information of each LED lamp in the light emitting unit group 322, the power supply feedback information comprises voltage and current information, etc., the voltage control signal is used to control the first power supply circuit 340 to adjust the size of the first power supply voltage output, and the proportion converter 350 converts the first power supply voltage according to the preset voltage conversion proportion, and the second power supply voltage output changes accordingly.

[0120] For example, the voltage conversion proportion of the proportion converter 350 is 1:4, when the first power supply voltage is 24V, the second power supply voltage output by the proportion converter 350 is 6V, at this time, the control circuit controls the first power supply circuit to adjust the first power supply voltage to 25V, and the second power supply voltage can be adjusted to 25 / 4=6.25V.

[0121] In related technologies, if the input voltage of the LED lamp is maintained at 6V and the output power is maintained at 120W, the total current of the first power supply circuit 340 needs to be maintained at 20A. However, through this embodiment, while maintaining the input voltage of the LED lamp at 6V and the output power at 120W, the first power supply circuit 340 can output a supply voltage of 24V-25V, reducing the current of the first power supply circuit to 5A. Then, the 24V-25V is converted to 6V-6.25V by a proportional converter to power the LED lamp, achieving a closed-loop system effect. This reduces the current of the first power supply circuit 340, reduces transmission loss, avoids the risk of wire burnout, and maintains the LED lamp at a lower input voltage, reducing costs while improving efficiency. Furthermore, the driving circuit corresponding to the LED lamp can use semiconductor technology with lower withstand voltage, significantly reducing the design cost of the driving circuit.

[0122] In the above technical solution, the display device includes a first power supply circuit 340, a display panel 310, a backlight assembly 320, a proportional converter 350, and a control circuit 330. The control circuit 330, based on power supply feedback information from the light-emitting unit group 322, controls the first power supply circuit 340 to adjust the output first power supply voltage. This ensures that the first power supply voltage, after being converted by the proportional converter 350 according to a preset ratio, obtains a target second power supply voltage to supply power to the light-emitting unit group 322, allowing the entire backlight LED to operate under a reasonable input voltage. On one hand, the two-stage conversion between the output of the first power supply circuit 340 and the proportional converter 350 increases the power supply voltage, reduces the current, decreases transmission loss, and reduces the impedance requirements of the connection lines. On the other hand, because the LED voltage is controlled to a relatively low level, costs are reduced and efficiency is improved. Furthermore, when the LED voltage is controlled to a relatively low level, the corresponding driving circuit can use a semiconductor process with lower voltage withstand capability, significantly reducing the design cost of the driving circuit.

[0123] In one embodiment, reference Figure 5 , Figure 6 The circuit structure shown has at least one proportional converter 350. Figure 7 Taking two as examples, Figure 6 (Taking one as an example); the proportional converter 350 is connected to the power supply terminal (VP terminal in the figure) of the driving circuit 3210 of at least one driving group 321 (taking the proportional converter 350 being connected to one driving group 321 as an example), and is connected to the power supply terminal of the light-emitting unit group 322 corresponding to the connected driving group 321. Each proportional converter 350 obtains a second power supply voltage after a preset ratio conversion of the received first power supply voltage, so as to supply power to the driving circuit 3210 and the light-emitting unit group 322 respectively; when the light-emitting unit group 322 receives the second power supply voltage and the driving signal, it outputs a light source.

[0124] In the technical solution, each proportional converter 350 is connected to the power supply end of the driving circuit 3210 of the at least one driving group 321 and the power supply end of the light emitting unit group 322 corresponding to the connected driving group 321, so that each proportional converter 350 can preset proportional conversion on the received first power supply voltage to obtain a second power supply voltage, and supply power to the connected driving circuit 3210 and the light emitting component, so that the driving circuit 3210 drives the light emitting unit group 322 to provide a light source, and reduces the maintenance cost of the backlight component 320 and the design cost of the driving circuit 3210.

[0125] In one of the embodiments, the control circuit 330 is further configured to control the driving circuit 3210 to obtain the power supply state of the light emitting unit group 322 and receive power supply feedback information fed back by the driving circuit 3210 and representing the power supply state.

[0126] For example, the control circuit 330 can control the driving circuit 3210 to sample the voltage and current information of each LED lamp in the light emitting unit group 322 to obtain the power supply state, and generate a voltage control signal based on the power supply feedback information fed back by the driving circuit 3210.

[0127] For example, the driving circuit 3210 in the driving group 321 is configured with a data input end (DIN in the figure) and a data output end (DOUT in the figure) according to the circuit structure shown in Figure 5 , Figure 6 The data input end is configured to receive backlight driving data, and the data output end is configured to output power supply feedback information. The driving group 321 can transmit the power supply feedback information through the transmission wire between the data output end and the control circuit 330, without affecting the process of transmitting driving data from the control circuit 330 to the driving group 321.

[0128] For example, the plurality of driving circuits 3210 can also transmit the power supply feedback information to the control circuit 330 in the reverse direction of the driving data transmission path.

[0129] For example, a voltage / current sensor, an analog-to-digital conversion unit, a metering chip, etc. can be arranged inside the driving group 321 to detect the power supply state of the light emitting component and output corresponding power supply feedback information to the control circuit 330.

[0130] In the technical solution, the control circuit 330 can control the driving group 3210 to sample and obtain the power supply state of the light emitting unit group 322, receive power supply feedback information fed back by the driving circuit 3210 and representing the power supply state, and output a voltage adjustment control signal to the first power supply circuit based on the power supply feedback information, so as to adjust the value of the first power supply voltage output by the first power supply circuit, thereby realizing voltage control of the first power supply circuit 340.

[0131] In one of the embodiments, the control circuit 330 comprises at least one of a system on chip, a timing controller, a backlight controller, which can be referred to the above-mentioned embodiments respectively, and thus will not be repeated here.

[0132] In the above-mentioned technical solution, at least one of the system on chip, the timing controller, the backlight controller can be used as the control circuit to effectively and reliably control the first power supply circuit 340 to adjust the first power supply voltage outputted based on the power supply feedback information of the light emitting unit group.

[0133] In one of the embodiments, referring to the circuit structure shown in Figure 7 The proportional converter 350 and the driving circuit 3210 connected therewith form an integrated circuit (A1 in the figure), which is configured with a voltage input port (VIN in the figure), a voltage output port (VOUT in the figure), a driving input port (DIN in the figure) and a driving output port (DOUT in the figure); the voltage input port is connected with the first power supply circuit 340 and the proportional converter 350 respectively, the voltage output port is connected with the proportional converter 350 and the light emitting unit group 332 respectively, the driving input port receives the backlight driving data and is connected with the driving circuit 3310, and the driving output port is connected with the light emitting unit group 332.

[0134] The proportional converter 350 receives the first power supply voltage through the voltage input port and outputs the second power supply voltage to the connected light emitting unit group 322 through the voltage output port; the driving circuit 3210 receives the second power supply voltage through the proportional converter 350, receives the backlight driving data through the driving input port, and under the condition of receiving the second power supply voltage and the backlight driving data, provides the driving signal to the connected light emitting unit group 322 through the driving output port, the driving signal being determined based on the backlight driving data.

[0135] In which, the integrated circuit receives the first power supply voltage through the voltage input port for the proportional converter 350 to convert and supply power to the driving circuit 3210, outputs the second power supply voltage to the light emitting unit group 322 through the voltage output port, receives the backlight driving data through the driving input port and transmits to the driving circuit 3210, so that the driving circuit 3210 provides the driving signal under the action of the second power supply voltage and outputs to the light emitting unit group 322 through the driving output port.

[0136] Exemplarily, the number of the driving circuits 3210 connected with the proportional converter 350 is multiple, the multiple driving circuits 3210 are cascaded, the first driving circuit 3210 receives the backlight driving data through the driving input port, the backlight driving data includes at least one driving data segment, so that the multiple driving circuits 3210 in the driving group 321 respectively receive one driving data segment and drive the light emitting components in the connected light emitting unit group 322 to emit light. The driving data segment can include PWM duty cycle data, backlight current amplitude, etc. used for driving the light emitting components to emit light. After the driving circuit 3210 receives the driving data segment, the driving circuit 3210 can output a PWM control signal according to the duty cycle data and the backlight current amplitude to control the light emitting state of the connected light emitting components.

[0137] Exemplarily, the number of the driving circuits 3210 connected with the proportional converter 350 is multiple, the multiple driving circuits 3210 are connected in parallel, and the multiple driving circuits 3210 connected in parallel respectively receive the backlight driving data through the driving input port and drive the light emitting components connected thereto to emit light. The backlight driving data can include PWM duty cycle data, backlight current amplitude, etc. used for driving the light emitting components to emit light. After the driving circuit 3210 receives the backlight driving data, the driving circuit 3210 can output a PWM control signal according to the duty cycle data and the backlight current amplitude to control the light emitting state of the connected light emitting components.

[0138] In the above technical solution, the proportional converter 350 and the driving circuit 3210 form an integrated circuit, the integrated circuit has the proportional conversion function and the driving function, can provide the driving signal to the light emitting unit group 322 based on the received first power supply voltage and the backlight driving data, so that the backlight component 320 provides the light source, on the basis of reducing the maintenance cost of the power supply voltage of the backlight component 320 and the design cost of the driving circuit 3210, the integrated degree of the circuit can also be improved, the complexity of the system can be effectively reduced, the overall occupied area of the circuit can be reduced, and the volume can be reduced. It can also reduce the transmission loss between the proportional converter 350 and the driving circuit 3210.

[0139] In one of the embodiments, referring to the circuit structure shown in Figure 8 The proportional converter 350 is also connected with the data end of at least one driving circuit 3210 of at least one driving group 321 to transmit the received backlight driving data to each driving circuit 3210 of the driving group 321. In the case that the driving circuit 3210 receives the second power supply voltage and the backlight driving data, the driving circuit 3210 provides a driving signal to the connected light emitting unit group 322, and the driving signal is determined based on the backlight driving data.

[0140] The proportional converter 350 can be connected with the control circuit to receive the backlight driving data output by the control circuit. The proportional converter 350 can transmit the backlight driving data and the second power supply voltage to each driving circuit 3210 of the driving group 321 respectively, so that the driving circuit 3210 provides a driving signal to the connected light emitting unit group 322 based on the backlight driving data under the action of the second power supply voltage.

[0141] Each driving circuit 3210 can receive the backlight driving data through the proportional converter 350. Compared with the case that each driving circuit 3210 receives the backlight driving data through the control circuit, the transmission wiring of the backlight driving data can be shortened. When the proportional converter 350 is connected with multiple driving groups 321, the proportional converter 350 can also replace part of the data distribution function of the control circuit, reduce the distribution function of the control circuit, and reduce the data distribution cost of the control circuit.

[0142] In the above technical solution, the proportional converter 350 not only has a proportional conversion function, but also has a data transmission function. The proportional converter 350 can transmit the converted second power supply voltage and the received backlight driving data to each driving circuit 3210 of the connected driving group 321. Each driving circuit 3210 provides a driving signal to the connected light emitting unit group 322 based on the received backlight driving data under the action of the second power supply voltage, and drives the light emitting unit group 322 to output a light source. On the basis of reducing the maintenance cost of the backlight assembly 320 power supply voltage and the design cost of the driving circuit 3210, the transmission wiring of the backlight driving data can be shortened, and the data distribution cost of the control circuit can be reduced.

[0143] In one embodiment, the proportional converter 350 is further configured to, in the case that the backlight driving data carries a standby instruction, stop outputting the second power supply voltage.

[0144] It can be understood that, in the case that the backlight driving data does not carry a standby instruction, the proportional converter 350 can normally output the second power supply voltage; in the case that the backlight driving data carries a standby instruction, the proportional converter 350 can stop outputting the second power supply voltage based on the standby instruction. Thus, the output state of the proportional converter 350 can be flexibly controlled based on the standby instruction. At the same time, the standby instruction is carried in the backlight driving data, without the need to increase the controlled port of the proportional converter 350 or the control channel, which is conducive to simplifying the circuit and reducing the cost.

[0145] For example, the standby instruction can be a high-level or low-level control signal carried in the backlight driving data. When the proportional converter 350 detects the foregoing control signal, it stops outputting the second power supply voltage, and the control logic is simple.

[0146] In the technical solution, the standby instruction is carried by the backlight driving data, so that the output state of the proportional converter 350 can be controlled, the controllability of the proportional converter 350 is improved, the display device can flexibly adjust the power supply state as needed, the standby state can be switched in time, and the power consumption is reduced.

[0147] In one of the embodiments, referring to the circuit structure shown in Figure 9 The proportional converter 350 and the driving circuit 3210 connected thereto form an integrated circuit (A2 in the figure), which is configured with a voltage input port (VIN in the figure), a voltage output port (VOUT in the figure), a driving input port (DIN in the figure), and a driving output port (DOUT in the figure). The voltage input port is connected to the first power supply circuit 340, the voltage output port is connected to the light emitting unit group 332, the driving input port is connected to the backlight driving data, and the driving output port is connected to the light emitting unit group 332.

[0148] The proportional converter 350 receives the first power supply voltage through the voltage input port, outputs the second power supply voltage to the connected light emitting unit group 322 through the voltage output port, and receives the backlight driving data through the driving input port. The driving circuit 3210 receives the second power supply voltage and the backlight driving data through the proportional converter 350, and provides the driving signal to the connected light emitting unit group 322 through the driving output port when the second power supply voltage and the backlight driving data are received.

[0149] The integrated circuit receives the first power supply voltage through the voltage input port for the proportional converter 350 to convert and supply power to the driving circuit 3210, outputs the second power supply voltage to the light emitting unit group 322 through the voltage output port, receives the backlight driving data through the driving input port and transmits it to the proportional converter 350, so that the proportional converter 350 distributes the backlight driving data to the driving circuit 3210, so that the driving circuit 3210 provides the driving signal based on the backlight driving data under the action of the second power supply voltage, and outputs it to the light emitting unit group 322 through the driving output port.

[0150] Exemplarily, the number of driving circuits 3210 connected to the proportional converter 350 is multiple, and the multiple driving circuits 3210 are cascaded. The proportional converter 350 can distribute the backlight driving data to the first and last driving circuits 3210. The backlight driving data received by the first driving circuit 3210 includes at least one driving data segment, so that each of the multiple driving circuits 3210 in the driving group 321 receives a driving data segment and drives the connected light emitting assembly to emit light. The driving data segment is described above in the related description of the embodiments, which is not repeated here.

[0151] Exemplarily, the number of the driving circuits 3210 connected with the proportional converter 350 is multiple, the multiple driving circuits 3210 are connected in parallel, the proportional converter 350 can distribute the backlight driving data to the multiple driving circuits 3210 connected in parallel, and the multiple driving circuits 3210 connected in parallel receive the backlight driving data and drive the light emitting components connected therewith to emit light. The backlight driving data is described above with reference to the related description of the embodiments, and will not be described herein.

[0152] In the technical solution, the proportional converter 350 and the driving circuit 3210 form an integrated circuit, the integrated circuit has the proportional conversion function and the driving function, can provide the driving signal to the light emitting unit group 322 based on the received first power supply voltage and the backlight driving data, so that the backlight component 320 provides the light source, and on the basis of reducing the maintenance cost of the power supply voltage of the backlight component 320 and the design cost of the driving circuit 3210, the integration degree of the circuit can be improved, the complexity of the system can be effectively reduced, the overall area occupied by the circuit can be reduced, and the volume can be reduced. The transmission loss between the proportional converter 350 and the driving circuit 3210 can also be reduced.

[0153] In one of the embodiments, the number of the integrated circuits is multiple, the integrated circuit is further configured with a data transmission port, at least two integrated circuits are cascaded, the driving input port of the latter integrated circuit is connected with the data transmission port of the former integrated circuit, and the proportional converter 350 further transmits the backlight driving data to the latter integrated circuit through the data transmission port.

[0154] In the technical solution, the proportional converter 350 and the driving circuit 3210 form an integrated circuit, the integrated circuit not only has the proportional conversion function and the driving function, but also has the data transmission function, can transmit the backlight driving data between the cascaded integrated circuits, and drive the light emitting state of more light emitting unit groups 322 through the mutual cooperation of the multiple cascaded integrated circuits. Each integrated circuit only needs to drive the light emitting unit group 322 connected therewith and transmit the backlight driving data, the conversion capacity of each integrated circuit can be greatly reduced, the efficiency can be greatly improved, the driving of the light emitting unit group 322 and the transmission of the data can be ensured, the problem of specification redundancy can be avoided, the cost can be reduced, and the line cross can also be reduced. In addition, the multiple cascaded integrated circuits can be connected with the control circuit through a serial bus to receive the backlight driving data, and each integrated circuit does not need to be connected with the control circuit through a cable, so that the complexity of the backlight component 320 can be effectively reduced.

[0155] In one of the embodiments, with reference to the circuit structure shown in Figure 10 The proportional converter 350 includes a proportional conversion unit 351.

[0156] The input end of the proportional conversion unit 351 is connected with the voltage input port, and the output end of the proportional conversion unit 351 is connected with the voltage output port and the power supply end of the driving circuit 3210 respectively.

[0157] In one embodiment, the proportional converter 350 further comprises a data transmission unit 352.

[0158] The input end of the data transmission unit 352 is connected with the driving input port, and the data output end of the data transmission unit 352 is connected with the data end of the driving circuit 3210 and the data end of the proportional converter 350 respectively.

[0159] The data transmission unit 352 is configured to transmit the received backlight driving data to the proportional conversion unit 351 and the driving circuit 3210, the proportional conversion unit 351 is configured to pre-set proportionally convert the received first power supply voltage to obtain the second power supply voltage and output, and stop outputting the second power supply voltage when the backlight driving data carries standby instructions.

[0160] In the above technical solution, the proportional converter 350 comprises the proportional conversion unit 351 and the data transmission unit 352, on the one hand, the proportional converter 350 can transmit the backlight driving data to the proportional conversion unit 351 and the driving circuit 3210 through the data transmission unit 352, thereby the proportional converter 350 has the data transmission function, can replace part of the data distribution function of the control circuit, reduce the distribution function of the control circuit, and reduce the data distribution cost of the control circuit; on the other hand, the proportional converter 350 can obtain the second power supply voltage by pre-set proportionally converting the received first power supply, and output to the driving circuit 3210 through the proportional conversion unit 351, and can stop outputting the second power supply voltage when the received backlight driving data carries standby instructions, thereby the proportional converter 350 has the controllable proportional conversion function, can flexibly adjust the output condition, and is suitable for different power supply requirements.

[0161] In one embodiment, the driving group 321 comprises a plurality of driving circuits 3210, the plurality of driving circuits 3210 are cascaded, and the backlight driving data is received by the first driving circuit 3210, and the power supply ends of the plurality of driving circuits 3210 are connected with the power supply output ends of the same proportional converter 350 respectively.

[0162] The first driving circuit 3210 can be connected with the control circuit to receive the backlight driving data, or can be connected with the proportional converter 350 with the data transmission function to receive the backlight driving data. The backlight driving data includes a plurality of driving data segments, and the driving circuits 3210 in the same driving group 321 are cascaded through a serial bus, and the driving data segments are transmitted to each driving circuit 3210 through the serial bus. The cascaded connection of the plurality of driving circuits 3210 helps to save the number of configured addresses.

[0163] Taking the example that the driving circuit 3210 is connected with the control circuit to receive the backlight driving data, and the backlight driving data includes a plurality of driving data segments, referring to the circuit structure shown in FIG. 3, the plurality of driving circuits 3210 in the driving group 321 are cascaded, the input end DIN of the driving circuit 3210 at the first position in the driving group 321 is electrically connected with the control circuit 330, and the output end DOUT is electrically connected with the input end DIN of the driving circuit 3210 at the next level, and so on, until the input end DIN of the driving circuit 3210 at the last position is electrically connected. Figure 7

[0164] In the above technical solution, each driving group 321 includes at least one cascaded driving circuit 3210, and the plurality of cascaded driving circuits 3210 cooperate with each other to transmit the backlight driving data and drive the light emitting state of the more light emitting unit groups 322. Each driving circuit 3210 only needs to drive the connected light emitting unit group 322 and transmit the backlight driving data, and the efficiency can be greatly improved. The driving of the light emitting unit group 322 and the transmission of the data are ensured, the problem of specification redundancy is avoided, and the cost is reduced. In addition, the plurality of cascaded driving circuits 3210 can receive the backlight driving data through one serial bus, and each driving circuit 3210 does not need to receive the backlight driving data through the serial bus, which can effectively reduce the complexity of the backlight assembly 320. In the solution in which the backlight assembly 320 includes a plurality of driving groups 321, the plurality of driving groups 321 respectively receive the backlight driving data through a plurality of serial buses, and the time synchronization of the driving groups 321 receiving the corresponding backlight driving data can be supported.

[0165] In one embodiment, the data end of the driving circuit 3210 at the first level receives and transmits the backlight driving data from the control circuit or the proportional converter 350, and each driving circuit 3210 provides a driving signal to the connected light emitting unit group 322 under the condition of receiving the second power supply voltage and the backlight driving data.

[0166] ​In the technical solution, the plurality of cascaded driving circuits 3210 can be connected with the control circuit or the proportional converter 350 through the first driving circuit 3210 to receive the backlight driving data, without the need of connecting each driving circuit 3210 with the control circuit or the proportional converter 350 through a cable, so that the complexity of the backlight assembly 320 can be effectively reduced.

[0167] In one of the embodiments, the driving group 321 includes a plurality of driving circuits 3210, the plurality of driving circuits 3210 are connected in parallel and respectively receive the backlight driving data, and the power supply ends of the plurality of driving circuits 3210 are respectively connected with the power supply output ends of the same proportional converter 350.

[0168] The plurality of driving circuits 3210 can respectively receive the backlight driving data through the plurality of serial buses, so that the time synchronization of the driving groups 321 receiving the corresponding backlight driving data can be supported.

[0169] The plurality of driving circuits 3210 in the driving group 321 are connected in parallel, the input ends of the driving circuits 3210 in the driving group 321 are connected in parallel, and the output ends of the driving circuits 3210 are connected in parallel.

[0170] For example, the input end is configured to receive the backlight driving data segment, and the output end is configured to output the feedback signal to the control circuit 330.

[0171] In the technical solution, the plurality of parallel driving circuits 3210 can respectively receive the backlight driving data under the control of the second power supply voltage output by the proportional converter 350, the receiving efficiency is high, the efficiency of driving the light emitting unit group 322 to emit light can be improved, the frame rate of the display device can be improved, and thus the display quality can be improved.

[0172] In one of the embodiments, the data end of each driving circuit 3210 of the driving group 321 receives the backlight driving data from the control circuit or the proportional converter 350, and each driving circuit 3210 provides the driving signal to the connected light emitting unit group 322 under the condition of receiving the second power supply voltage and the backlight driving data.

[0173] In the technical solution, each driving circuit 3210 of each driving group 321 can be connected with the control circuit or the proportional converter 350 to receive the backlight driving data, so that the driving signal can be provided to the connected light emitting unit group 322 according to the backlight driving data under the action of the second power supply voltage, the light emitting unit group 322 is driven to emit light, and the reliability and stability of the operation of the backlight assembly 320 can be improved.

[0174] In one of the embodiments, the display device further comprises at least one lamp plate, the lamp plate is provided with the light emitting unit group 322 and the driving group 321, and the proportional converter 350 connected with the light emitting unit group 322 and the driving group 321 arranged on the lamp plate is arranged close to the lamp plate.

[0175] In the technical solution, the proportional converter 350 is arranged close to the lamp plate, so that the wiring between the light emitting unit group 322, the driving group 321 and the proportional converter 350 on the lamp plate is facilitated, the wiring is simplified, and the cost is reduced.

[0176] In one of the embodiments, the control circuit and the first power supply circuit are arranged on a circuit board, the light emitting unit group 322 and the driving group 321 are arranged on the lamp plate, the proportional converter 350 can be arranged close to the lamp plate and arranged on the board-to-board connector between the circuit board and the lamp plate, so as to realize the connection between the circuit board and the lamp plate through the board-to-board connector, and the wiring of the whole is further simplified.

[0177] In one of the embodiments, referring to the circuit structure shown in Figure 11 In one of the embodiments, the display device further comprises at least one lamp plate 40, the lamp plate 40 is provided with the light emitting unit group 322 and the driving group 321, and the proportional converter 350 connected with the light emitting unit group 322 and the driving group 321 arranged on the lamp plate 40 is arranged on the lamp plate 40.

[0178] In the technical solution, the proportional converter 350 is arranged on the lamp plate 40, can be connected with the light emitting unit group 322 and the driving group 321 through the inter-board wiring of the lamp plate 40, without the need of arranging the connecting line between the proportional converter 350 and the lamp plate 40, not only the line impedance can be reduced and the power supply efficiency can be improved by using the wiring of the lamp plate 40, but also the number of the connecting lines can be reduced, so that the assembly of the display device is more simple.

[0179] In one of the embodiments, each lamp plate 40 is provided with a proportional converter 350 and a driving group 321, the driving group 321 comprises a plurality of driving circuits 3210 arranged in an array, and the light emitting unit group 322 comprises a plurality of light emitting components arranged in an array; wherein the proportional converter 350, the driving group 321 and the light emitting unit group 322 are arranged on the same side of the lamp plate 40 and located in the area close to the first power supply circuit and the control circuit of the lamp plate 40.

[0180] The area close to the first power supply circuit and the control circuit of the lamp plate 40 can be understood as the edge area of the lamp plate 40, and the proportional converter 350 is arranged in the edge area of the lamp plate 40.

[0181] In the technical solution, on one hand, the proportional converter 350 is arranged on the lamp plate 40, and the second power supply voltage can be provided to the light emitting component, the driving circuit 3210, etc. by using the wiring on the lamp plate 40, so as to reduce the line impedance, improve the power supply efficiency, reduce the number of connection lines, and simplify the assembly of the display device; on the other hand, the proportional converter 350 is arranged at the edge region of the lamp plate 40, which is beneficial to shorten the wiring between the proportional converter 350 and the control circuit and the first power supply circuit, and reduce the cost.

[0182] In one of the embodiments, referring to the circuit structure shown in Figure 12 each lamp plate 40 is provided with a plurality of proportional converters 350 and a plurality of driving groups 321, the driving group 321 includes a plurality of driving circuits 3210 arranged in an array, and the light emitting unit group 322 includes a plurality of light emitting components arranged in an array; wherein the proportional converter 350, the driving group 321 and the light emitting unit group 322 are arranged on the same side of the lamp plate 40, and the plurality of proportional converters 350 are distributedly arranged, and the light emitting unit group 322 and the driving group 321 connected to the same proportional converter 350 are arranged close to each other.

[0183] The plurality of proportional converters 350 are distributed in different regions of the same lamp plate 40, and the arrayed driving circuit 3210 and the light emitting component connected to the proportional converter 350 can be arranged in each region, so that the proportional converter 350 in each region and the light emitting unit group 322 and the driving group 321 connected thereto are arranged close to each other, and the proportional converter 350 in each region only needs to provide the second power supply voltage to the driving circuit 3210 and the light emitting component in the region, which is beneficial to use a smaller size proportional converter 350 to reduce the cost, and on the other hand, the connection wiring between the proportional converter 350 and the driving circuit 3210 and the light emitting component can be shortened, which is beneficial to the wiring layout, reduces the size of the overall device, improves the flexibility of the circuit layout, and is beneficial to the heat dissipation of the lamp plate 40.

[0184] Exemplarily, the lamp plate 40 can be divided into a plurality of regions with the same size, and the plurality of proportional converters 350 can be distributed at the same position in the plurality of different regions, so that the plurality of proportional converters 350 on the plurality of lamp plates 40 can be arranged in an array, so that the overall wiring is more regular, which is beneficial to the wiring design.

[0185] In the technical solution, the plurality of proportional converters 350 are distributed in a plurality of regions on the same lamp panel 40, and the proportional converter 350 in each region can be arranged close to the corresponding connected light emitting unit group 322 and driving group 321. The proportional converter 350 in each region only needs to provide the second power supply voltage to the driving circuit 3210 and the light emitting assembly in the region. On the one hand, a smaller specification proportional converter 350 can be used to reduce costs. On the other hand, the connection wires between the proportional converter 350 and the driving circuit 3210 and the light emitting assembly can be shortened, which is beneficial to the layout of the wires and reduces the size of the overall device and improves the flexibility of the circuit layout. At the same time, it is also beneficial to heat dissipation of the lamp panel 40.

[0186] In one of the embodiments, the lamp panel 40 has a first side and a second side opposite to each other. The light emitting unit group 322 and the driving group 321 are located on the first side, and the proportional converter 350 is located on the second side. The first side can be understood as the front side of the lamp panel 40, and the second side can be understood as the back side of the lamp panel 40.

[0187] In the technical solution, the proportional converter 350, the light emitting unit group 322, and the driving group 321 are arranged on different sides of the lamp panel 40. This can shorten the wires and simplify the wiring, reduce the area occupied by the proportional converter 350 on the front side of the lamp panel 40, and make the selection of the proportional converter 350 more flexible. Either a larger proportional converter 350 or a smaller proportional converter 350, such as a chip-type proportional converter 350, can be selected.

[0188] In one of the embodiments, referring to the circuit structure shown in Figure 13 The display device further includes a second power supply circuit 360.

[0189] The second power supply circuit 360 is configured to provide a third power supply voltage. The proportional converter 350 is further configured to convert the received first power supply voltage into the second power supply voltage under the action of the third power supply voltage.

[0190] In the technical solution, the second power supply circuit 360 is provided. When the second power supply circuit 360 provides the third power supply voltage, the proportional converter 350 is prompted to perform a preset proportional conversion to convert the received first power supply voltage into the second power supply voltage. It can be understood that when the second power supply circuit 360 provides the third power supply voltage, the proportional converter 350 is in a working state. When the second power supply circuit 360 stops providing the third power supply voltage, the proportional converter 350 is in a non-working state. Exemplarily, the second power supply circuit 360 can be a system power supply circuit of the display device. When the system power supply circuit stops providing the third power supply voltage, the display device is in a standby state, and the entire device is in a low-power consumption state and does not consume power.

[0191] It can be understood that in other embodiments, when the first power supply circuit stops providing the first power supply voltage, the proportional converter 350 can be caused to stop working, thereby switching all power consumption. Exemplarily, the second power supply circuit 360 can be a system power supply circuit configured to supply power to the first power supply circuit 340, the display panel 310, the control circuit 330, etc.

[0192] In one of the embodiments, the proportional converter 350 includes at least one of an open-loop charge pump, an isolated resonant converter.

[0193] In the case where the proportional converter 350 adopts the open-loop charge pump form, the topological efficiency can be as high as more than 98%. Exemplarily, the open-loop charge pump form can be a fully integrated switched capacitor DC / DC converter, which uses the charging and discharging of a capacitor to achieve voltage conversion, with a maximum efficiency of 98%, and a very small volume, suitable for being distributed on the lamp panel 40, for example, the LTC7825 model, supporting 243V / 12A.

[0194] In the case where the proportional converter 350 can adopt an isolated resonant converter, it can be designed to work at a fixed frequency, and by setting a suitable switching frequency, the converter can be operated at the optimal operating state, greatly improving the conversion efficiency. For example, an LLC resonant converter is adopted, which has relatively high conversion efficiency because it can achieve soft switching. The LLC resonant converter can obtain a good operating state at the resonant point, at which the conversion efficiency is relatively high, and has a good load regulation rate, so the switching frequency of the LLC resonant converter can be fixed at the resonant frequency point, and the voltage conversion can be performed according to the turns ratio of the transformer, thereby obtaining a relatively high conversion efficiency and a fixed proportional conversion of voltage.

[0195] In the above technical solution, the proportional converter 350 includes at least one of an open-loop charge pump and an isolated resonant converter, which can effectively improve the efficiency of voltage conversion, thereby improving the overall backlight efficiency of the backlight assembly 320.

[0196] The embodiments of the present application also provide a display device for solving at least one of the above technical problems.

[0197] The technical solutions of the present application will be described in detail below in conjunction with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described in detail in some embodiments. In order to facilitate explanation and description, the control circuit in the following embodiments can be any one of the system-on-chip, the timing controller, and the backlight controller mentioned in the above embodiments. It can be understood that the foregoing control circuit is only an example and is not limited.

[0198] In one of the embodiments, the proportional converter 350 includes at least one of an open-loop charge pump, an isolated resonant converter. Figure 14As shown in the circuit structure, the display device comprises a first power supply circuit 440 configured to provide a first power supply voltage, and the related description of the first power supply circuit 440 can refer to the above-mentioned embodiments, which will not be repeated here.

[0199] In one of the embodiments, referring to Figure 14 As shown in the circuit structure, the display device comprises a display panel 410, and the related description of the display panel 410 can refer to the above-mentioned embodiments, which will not be repeated here.

[0200] In one of the embodiments, referring to Figure 14 As shown in the circuit structure, the display device comprises a backlight assembly 420 located at a side away from the display side of the display panel 410.

[0201] In one of the embodiments, referring to Figure 14 As shown in the circuit structure, the backlight assembly 420 comprises at least one driving integrated circuit 421 and at least one light emitting unit group 422, the driving integrated circuit 421 is connected with the first power supply circuit 440 and the light emitting unit group 422 respectively, and is configured to perform preset proportional conversion on the first power supply voltage to obtain a second power supply voltage; and is further configured to output a driving signal to the connected light emitting unit group 422; wherein the light emitting unit group 422 outputs light source and power supply feedback information under the condition of receiving the second power supply voltage and the driving signal. The driving integrated circuit 421 is further configured to adjust the preset proportion based on the power supply feedback information of the light emitting unit group 422 to adjust the output second power supply voltage.

[0202] The driving signal can be determined based on the received backlight driving data, and in one of the embodiments, referring to Figure 14 As shown in the circuit structure, the display device comprises a control circuit 430 configured to output backlight driving data to the driving integrated circuit 421.

[0203] The driving integrated circuit 421 can be understood as comprising the control circuit, the proportional converter and the driving group in any of the above-mentioned embodiments, and the functional devices of the control circuit related to the first power supply circuit control, the proportional converter and the driving group are integrated together to obtain the same functions as the control circuit, the proportional converter and the driving group, which can effectively reduce the complexity of the system, further simplify the circuit and reduce the occupied area; and the driving integrated circuit 421 can adjust the preset proportional conversion based on the power supply feedback information of the light emitting unit group 422, and through closed-loop control, the second power supply voltage is fine-tuned, the power supply efficiency is further improved, the system architecture is simplified, and the power supply feedback information of the backlight assembly 420 does not need to be fed back as a whole; at the same time, since the number of energy supply channels of the output of the proportional converter is reduced, the demand is reduced, so the volume can be further reduced, which creates conditions for the fusion of the driving circuit of the driving group 421, and is more suitable for ultra-high partition application scenarios.

[0204] In the technical solution, the display device comprises the first power supply circuit 440, the display panel 410, and the backlight assembly 420. The backlight assembly 420 comprises at least one light emitting unit group 422 and at least one driving integrated circuit 421. On one hand, the driving integrated circuit 421 has a driving function and can output a driving signal to the LED lamp. The driving integrated circuit 421 also has a proportional conversion function and an adjustment function of a preset proportion. The driving integrated circuit 421 can improve the integrated degree, increase the power supply voltage, reduce the current, and reduce the transmission loss. The driving integrated circuit 421 also reduces the demand for the impedance of the connecting line. The driving integrated circuit 421 can adjust the preset proportion based on the power supply feedback information of the light emitting unit group 422 to adjust the second power supply voltage. The control of the power supply can be upgraded to closed-loop control. The driving integrated circuit can be finely controlled to perform the preset proportion conversion, further improve the power supply efficiency, simplify the system architecture, and does not need to feed back the power supply feedback information of the backlight assembly as a whole. On the other hand, the voltage of the LED lamp is controlled to a relatively low level, which reduces the cost and improves the efficiency. When the voltage of the LED lamp is controlled to a relatively low level, the driving circuit corresponding to the LED lamp can use a semiconductor process with a relatively low withstand voltage, which greatly reduces the design cost of the driving circuit.

[0205] Based on the same technical concept, the embodiment of the present application also provides a driving integrated chip for solving the above-mentioned at least one technical problem. The technical solutions of the present application will be described in detail below in combination with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described in detail in some embodiments.

[0206] In one embodiment, as shown in Figure 15 the driving integrated chip is configured with a voltage input port (such as VIN in the figure), a voltage output port (such as VOUT in the figure), a driving input port (such as DIN in the figure), and a driving output port (such as DOUT in the figure). The voltage input port is configured to receive the first power supply voltage of the first power supply circuit. The voltage output port is connected to the power supply end of the light emitting unit group 60. The driving input port is configured to receive backlight driving data. The driving output port is connected to the driving end of the light emitting unit group 60. The related descriptions of the ports can be referred to the above-mentioned embodiments, which will not be described here.

[0207] In one embodiment, as shown in Figure 15 the driving integrated chip comprises a proportional conversion circuit 510.

[0208] The proportional conversion circuit 510 is connected to the voltage input port and the voltage output port respectively and is configured to perform preset proportion conversion on the first power supply voltage to obtain the second power supply voltage and output the second power supply voltage to the light emitting unit group 60 through the voltage output port. The function of the proportional conversion circuit 510 can be referred to the proportional converter and the proportional conversion unit in the above-mentioned embodiments.

[0209] In one of the embodiments, as shown in Figure 15 The driving integrated chip includes a driving circuit 520.

[0210] The driving circuit 520 is connected with the proportional conversion circuit 510, the driving input port and the driving output port respectively, and is configured to provide a driving signal to the connected light emitting unit group 60 through the driving output port based on the backlight driving data when the second power supply voltage and the backlight driving data are received. The driving circuit 520 refers to the related description of the driving circuit 520 in the above embodiments.

[0211] The light emitting unit group 60 outputs a light source when the second power supply voltage and the driving signal are received. The first power supply circuit is connected with the control circuit, and the control circuit is configured to control the first power supply circuit to adjust the output first power supply voltage based on the power supply state information of the light emitting unit group 60.

[0212] In the above technical solution, the driving integrated chip is configured with a voltage input port, a voltage output port, a driving input port and a driving output port, and includes a proportional conversion circuit 510 and a driving circuit 520. On the one hand, the driving circuit 520 has a driving function and can output a driving signal to the LED, and the proportional conversion circuit 510 has a preset proportional conversion function. The two-stage conversion can be formed by the output of the first power supply circuit and the driving integrated chip, so that the power supply voltage is improved, the current is reduced, the transmission loss is reduced, the demand for the impedance of the connection line is reduced, and the control circuit outside the chip can also control the output of the first power supply circuit based on the power supply feedback information of the light emitting unit group 60, thereby further improving the power supply efficiency. On the other hand, the voltage of the LED lamp is controlled to a relatively low level, which reduces the cost and improves the efficiency. When the voltage of the LED lamp is controlled to a relatively low level, the driving circuit 520 corresponding to the LED lamp can use a semiconductor process with lower voltage resistance, which greatly reduces the design cost of the driving circuit 520.

[0213] In one of the embodiments, as shown in Figure 16 The driving integrated chip is configured with a voltage input port (such as VIN in the figure), a voltage output port (such as VOUT in the figure), a driving input port (such as DIN in the figure) and a driving output port (such as DOUT in the figure). The voltage input port is configured to receive the first power supply voltage, the voltage output port is connected with the power supply end of the light emitting unit group 60, the driving input port is configured to receive the backlight driving data, and the driving output port is connected with the driving end of the light emitting unit group 60. The related description of each port can be referred to the above embodiments, which will not be described here.

[0214] In one of the embodiments, as shown in Figure 16As shown, the driving integrated chip comprises a proportional conversion circuit 710.

[0215] The proportional conversion circuit 710 is connected with the voltage input port and the voltage output port respectively, and is configured to perform preset proportional conversion on the first power supply voltage to obtain the second power supply voltage, and output the second power supply voltage to the light emitting unit group 60 through the voltage output port. The function of the proportional conversion circuit 710 can refer to the proportional converter and the proportional conversion unit in the above embodiment.

[0216] In one embodiment, as shown in FIG. 7, the driving integrated chip comprises a current control circuit 720. Figure 16

[0217] The current control circuit 720 is connected with the data transmission and logic circuit 730 and the driving output port respectively, and is configured to obtain the driving signal based on the backlight driving data, and output the driving signal to the light emitting unit group 60 through the driving output port, and obtain the power supply state of the light emitting unit group 60 through the driving output port, and output the feedback signal representing the power supply state to the data transmission and logic unit. Wherein, the light emitting unit group 60 outputs the light source under the condition of receiving the second power supply voltage and the driving signal. The function of the current control circuit 720 can refer to the driving circuit 520 in the above embodiment.

[0218] In one embodiment, as shown in FIG. 7, the driving integrated chip comprises a data transmission and logic circuit 730. The data transmission and logic circuit 730 is connected with the proportional conversion circuit 510 and the driving input port respectively, and is configured to receive the backlight driving data. The data transmission and logic circuit 730 can also determine the power supply feedback information of the light emitting unit group 60 according to the feedback signal, and control the proportional conversion circuit 510 to adjust the preset proportion according to the power supply feedback information, so as to adjust the second power supply voltage. The function of the data transmission and logic circuit 730 can refer to the control function of the control circuit on the first power supply circuit and the data transmission function of the data transmission unit in the above embodiment. Figure 16

[0219] ​​In the technical scheme, the driving integrated chip is configured with a voltage input port, a voltage output port, a driving input port and a driving output port, and the driving integrated chip comprises a proportional conversion circuit 510, a data transmission and logic circuit 730 and a current control circuit 720. On the one hand, the driving integrated chip has a driving function and can output a driving signal to the LED lamp, and the driving integrated chip also has a proportional conversion function and a preset proportion adjustment function, so that the integrated degree is improved, the power supply voltage is increased, the current is reduced, the transmission loss is reduced, the demand for the impedance of the connecting line is reduced, and the preset proportion can be adjusted based on the power supply feedback information of the light emitting unit group 60 to adjust the second power supply voltage. The control of the power supply can be upgraded to closed-loop control, and the driving integrated circuit can be finely adjusted to perform preset proportion conversion, further improve the power supply efficiency, simplify the system architecture, and do not need to feed back the power supply feedback information of the backlight assembly as a whole. On the other hand, the voltage of the LED lamp is controlled to a relatively low level, the cost is reduced, and the efficiency is improved. Moreover, when the voltage of the LED lamp is controlled to a relatively low level, the driving circuit 520 corresponding to the LED lamp can adopt a semiconductor process with relatively low voltage resistance, thereby greatly reducing the design cost of the driving circuit 520.

[0220] The technical features of the above embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0221] The above embodiments only express several implementation manners of the present application, and the description is specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A display device, characterized by comprising: The display device comprises: a first power supply circuit configured to provide a first power supply voltage; a display panel; a backlight assembly located on the light entrance side of the display panel, the backlight assembly comprising: at least one light emitting unit group; at least one drive group, the drive group comprising: at least one drive circuit, the drive circuit being connected with the light emitting unit group, different drive circuits being connected with different light emitting unit groups, the drive circuit being configured to output a drive signal; a proportional converter connected with the first power supply circuit and the light emitting unit group respectively, configured to perform a preset proportional conversion on the first power supply voltage to obtain a second power supply voltage; wherein the light emitting unit group is configured to emit light based on the second power supply voltage and the drive signal, and output power supply feedback information; and a control circuit connected with the first power supply circuit and the light emitting unit group respectively, configured to: based on the power supply feedback information of the light emitting unit group, control the first power supply circuit to adjust the first power supply voltage outputted by the first power supply circuit.

2. The display device of claim 1, wherein, The number of proportional converters is at least one; the proportional converter is connected with the power supply end of the drive circuit of at least one drive group and the power supply end of the light emitting unit group corresponding to the connected drive group, and each proportional converter supplies power to the drive circuit and the light emitting unit group respectively.

3. The display device of claim 2, wherein, The proportional converter and the connected drive circuit form an integrated circuit, and the integrated circuit is configured with a voltage input port, a voltage output port, a drive input port and a drive output port; the voltage input port is connected with the first power supply circuit and the proportional converter respectively, the voltage output port is connected with the proportional converter and the light emitting unit group respectively, the drive input port receives backlight drive data and is connected with the drive circuit, and the drive output port is connected with the light emitting unit group; wherein the proportional converter receives the first power supply voltage through the voltage input port and outputs the second power supply voltage to the connected light emitting unit group through the voltage output port; the drive circuit receives the second power supply voltage through the proportional converter, receives backlight drive data through the drive input port, and in the case of receiving the second power supply voltage and the backlight drive data, provides the drive signal to the connected light emitting unit group through the drive output port, the drive signal being determined based on the backlight drive data.

4. The display device of claim 2, wherein, The proportional converter is also connected with the data end of at least one drive circuit of at least one drive group to transmit the received backlight drive data to the drive circuit of the drive group; wherein the drive circuit, in the case of receiving the second power supply voltage and the backlight drive data, provides the drive signal to the connected light emitting unit group, the drive signal being determined based on the backlight drive data.

5. The display device of claim 4, wherein, The proportional converter is also configured to, in the case that the backlight drive data carries a standby instruction, stop outputting the second power supply voltage.

6. The display device of claim 4, wherein, The proportion converter and the driving circuit connected therewith form an integrated circuit, which is configured with a voltage input port, a voltage output port, a driving input port and a driving output port; the voltage input port is connected with the first power supply circuit, the voltage output port is connected with the light emitting unit group, the driving input port accesses backlight driving data, and the driving output port is connected with the light emitting unit group; The proportion converter receives the first power supply voltage through the voltage input port, outputs the second power supply voltage to the light emitting unit group connected therewith through the voltage output port, and receives the backlight driving data through the driving input port; The driving circuit receives the second power supply voltage and the backlight driving data through the proportion converter, and provides the driving signal to the light emitting unit group connected therewith through the driving output port when the second power supply voltage and the backlight driving data are received.

7. The display device of claim 6, wherein, The proportion converter comprises: a proportion conversion unit, an input end of the proportion conversion unit being connected with the voltage input port, and output ends of the proportion conversion unit being connected with the voltage output port and a power supply end of the driving circuit respectively; a data transmission unit, an input end of the data transmission unit being connected with the driving input port, and data output ends of the data transmission unit being connected with a data end of the driving circuit and a data end of the proportion conversion unit respectively; The data transmission unit is configured to transmit the received backlight driving data to the proportion conversion unit and the driving circuit; the proportion conversion unit is configured to perform preset proportion conversion on the received first power supply voltage to obtain the second power supply voltage and output the second power supply voltage, and stop outputting the second power supply voltage when the backlight driving data carries standby instructions.

8. The display device according to any of claims 1-7, characterized in that, The control circuit is further configured to control the driving circuit to acquire the power supply state of the light emitting unit group and receive power supply feedback information fed back by the driving circuit, which represents the power supply state.

9. The display device of any of claims 1 or 2 or 4-5, wherein, The display device further comprises at least one lamp panel, the lamp panel being provided with the light emitting unit group and at least one driving group, the proportion converter connected with the light emitting unit group and the driving group on the lamp panel being arranged close to the lamp panel or on the lamp panel.

10. The display device of claim 9, wherein, Each lamp panel is provided with one proportion converter and one driving group, the driving group comprising a plurality of driving circuits arranged in an array, and the light emitting unit group comprising a plurality of light emitting components arranged in an array; The proportion converter, the driving group and the light emitting unit group are arranged on the same side of the lamp panel and located in a region of the lamp panel close to the first power supply circuit and the control circuit.

11. The display device of claim 9, wherein, Each lamp panel is provided with a plurality of proportion converters and a plurality of driving groups, the driving group comprising a plurality of driving circuits arranged in an array, and the light emitting unit group comprising a plurality of light emitting components arranged in an array; The proportion converters are arranged on the same side of the lamp panel as the driving groups and the light emitting unit groups, and the proportion converters are distributed.

12. A display device, characterized by comprising: The display device comprises: A first power supply circuit configured to provide a first power supply voltage; A display panel; A backlight assembly located on a light incident side of the display panel, the backlight assembly comprising: At least one light emitting unit group; At least one driving integrated circuit connected with the first power supply circuit and the light emitting unit group, configured to perform preset proportion conversion on the first power supply voltage to obtain a second power supply voltage, and configured to output a driving signal to the connected light emitting unit group; wherein the light emitting unit group outputs a light source and power supply feedback information when receiving the second power supply voltage and the driving signal; The at least one driving integrated circuit is further configured to adjust the preset proportion based on the power supply feedback information of the light emitting unit group to adjust the second power supply voltage.

13. A driver integrated chip, comprising: The driving integrated chip is configured with a voltage input port, a voltage output port, a driving input port, and a driving output port, the voltage input port is configured to receive a first power supply voltage of a first power supply circuit, the voltage output port is connected with a power supply end of a light emitting unit group, the driving input port is configured to receive backlight driving data, and the driving output port is connected with a driving end of the light emitting unit group; The driving integrated chip comprises: A proportion conversion circuit connected with the voltage input port and the voltage output port, configured to perform preset proportion conversion on the first power supply voltage to obtain a second power supply voltage, and output the second power supply voltage to the light emitting unit group through the voltage output port; A driving circuit connected with the proportion conversion circuit, the driving input port, and the driving output port, configured to provide the driving signal to the connected light emitting unit group through the driving output port when receiving the second power supply voltage and the backlight driving data, the driving signal being determined based on the backlight driving data; The light emitting unit group outputs a light source when receiving the second power supply voltage and the driving signal; the first power supply circuit is connected with a control circuit, and the control circuit is configured to control the first power supply circuit to adjust the first power supply voltage based on the light emitting unit group of the light emitting unit group.

14. A driver integrated chip, comprising: The driving integrated chip is configured with a voltage input port, a voltage output port, a driving input port, and a driving output port, the voltage input port is configured to receive a first power supply voltage, the voltage output port is connected with a power supply end of a light emitting unit group, the driving input port is configured to receive backlight driving data, and the driving output port is connected with a driving end of the light emitting unit group; The driving integrated chip comprises: a proportional conversion circuit connected with the voltage input port and the voltage output port respectively, configured to perform preset proportional conversion on the first power supply voltage to obtain a second power supply voltage, and output the second power supply voltage to the light emitting unit group through the voltage output port; a data transmission and logic circuit connected with the proportional conversion circuit and the drive input port respectively, configured to receive the backlight drive data; a current control circuit connected with the data transmission and logic circuit and the drive output port respectively, configured to obtain a drive signal based on the backlight drive data, and output the drive signal to the light emitting unit group through the drive output port, and obtain a power supply state of the light emitting unit group through the drive output port, and output a feedback signal representing the power supply state to the data transmission and logic circuit; wherein the light emitting unit group outputs a light source when receiving the second power supply voltage and the drive signal; the data transmission and logic circuit determines power supply feedback information of the light emitting unit group according to the feedback signal, and controls the proportional conversion circuit to adjust the preset proportion according to the power supply feedback information, so as to adjust the second power supply voltage.

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