Thrust control circuit and method for display driver circuit, display driver and device

Abstract

Provided are a push force control circuit and method of a display driving circuit, a display driver and a device, and the technical field of display. The push force control circuit comprises a picture detection circuit and a push force output circuit. The picture detection circuit can reliably identify the display state of the display panel based on the driving signal transmitted by the display driving circuit to the adjacent row of pixels through the driving line, and output a detection output signal indicating the display state to the push force output circuit. The push force output circuit can flexibly output a push force driving signal to the display driving circuit based on the different display states indicated by the detection output signal, so as to control the push force of the display driving circuit. Moreover, the push force output circuit controls the push force of the display driving circuit to increase when the display state is a heavy load picture display state relative to a non-heavy load picture display state. In this way, the push force can be flexibly adjusted based on different display states, and the problem of insufficient charging of the pixels can also be solved, thereby ensuring that the display effect of the display panel is good.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to a thrust control circuit and method for a display driving circuit, a display driver and an apparatus. Background Technology

[0002] Display driver circuits are essential circuits in display devices. They are typically coupled to multiple pixels in the display panel via drive lines to drive the pixels to emit light. For example, source driver circuits are usually coupled to multiple columns of pixels via multiple data lines and are used to transmit data signals to the pixels to charge them.

[0003] In related technologies, under the drive of the source driver circuit, the display panel can have multiple display states. These include a light-load display state, a heavy-load display state, and a normal display state between light and heavy load. Currently, for different display states, the source driver circuit maintains a constant thrust for transmitting data signals through the data lines; that is, it drives the data lines to transmit data signals under the same thrust.

[0004] However, because the data signals required by adjacent rows of pixels in the same column differ significantly between heavy-load and light-load / normal-load screen displays, using the same thrust-driven data line to transmit data signals under heavy-load screen display conditions as under light-load / normal-load screen display conditions will result in insufficient charging and affect the display effect. Summary of the Invention

[0005] A thrust control circuit and method for a display driving circuit, as well as a display driver and device, are provided to solve the problem of poor display effect of display panels in related technologies. The technical solution is as follows:

[0006] On one hand, a thrust control circuit for a display driving circuit is provided, wherein the display driving circuit is coupled to multiple pixels arranged in an array in a display panel through multiple driving lines, and the thrust control circuit includes:

[0007] The screen detection circuit is coupled to the multiple driving lines, the detection input terminal and the detection output terminal respectively, and is used to output a detection output signal to the detection output terminal based on the detection input signal from the detection input terminal and the driving signals transmitted by each driving line to the adjacent two rows of pixels. The detection output signal is used to indicate the display state of the display panel when the display driving circuit drives the multiple pixels to emit light.

[0008] A thrust output circuit is coupled to the detection output terminal and the thrust output terminal respectively, and is used to output a first thrust drive signal to the thrust output terminal if the detection output signal from the detection output terminal indicates that the display panel is in a heavy screen display state, and to output a second thrust drive signal to the thrust output terminal if the detection output signal from the detection output terminal indicates that the display panel is in a non-heavy screen display state; wherein, the voltage margin under the first thrust drive signal is greater than the voltage margin of the second thrust drive signal, and the thrust output terminal is used to be coupled to the display drive circuit.

[0009] Optionally, the image detection circuit includes:

[0010] Multiple detection input sub-circuits are coupled one-to-one with the multiple driving lines, and each detection input sub-circuit is also coupled to the first sampling end and the second sampling end respectively, and is used to transmit the driving signal transmitted by the corresponding driving line to the two adjacent rows of pixels to the first sampling end and the second sampling end respectively.

[0011] The detection output sub-circuit is coupled to a first sampling terminal and a second sampling terminal that are respectively coupled to each detection input sub-circuit, and is also coupled to the detection input terminal and the detection output terminal, and is used to output a detection output signal to the detection output terminal based on the detection input signal, the driving signal received by the first sampling terminal and the driving signal received by the second sampling terminal;

[0012] Specifically, when the detection input signal indicates that a thrust drive signal is output to the thrust output terminal, if the potential difference between the drive signal received by the first sampling terminal and the drive signal received by the second sampling terminal is greater than or equal to a difference threshold, a detection output signal indicating that the display panel is in a heavy-load screen display state is output to the detection output terminal; if the potential difference between the drive signal received by the first sampling terminal and the drive signal received by the second sampling terminal is less than a difference threshold, a detection output signal indicating that the display panel is in a non-heavy-load screen display state is output to the detection output terminal.

[0013] Optionally, the detection input sub-circuit includes: a first latch and a second latch;

[0014] The input terminal of the first latch is coupled to the drive line, the output terminal of the first latch is coupled to the input terminal of the second latch and the first sampling terminal, and the output terminal of the second latch is coupled to the second sampling terminal.

[0015] Optionally, the plurality of detection input sub-circuits are divided into different plurality of detection input sub-circuit groups, each detection input sub-circuit group including at least two detection input sub-circuits; the detection output sub-circuit includes: a plurality of detection output sub-circuit groups corresponding one-to-one with the plurality of detection input sub-circuit groups;

[0016] Each detection output sub-circuit group is coupled to the first sampling terminal and the second sampling terminal of each detection input sub-circuit in the corresponding detection input sub-circuit group, and adjacent detection output sub-circuit groups are coupled sequentially. The first detection output sub-circuit group is also coupled to the detection input terminal, and the last detection output sub-circuit group is also coupled to the detection output terminal. The plurality of detection output sub-circuit groups are used to output a detection output signal to the detection output terminal based on the detection input signal, the driving signal received by the first sampling terminal, and the driving signal received by the second sampling terminal.

[0017] Optionally, the detection output sub-circuit group includes: at least two first logic gates, one second logic gate and one third logic gate that correspond one-to-one with at least two detection input sub-circuits in the corresponding detection input sub-circuit group;

[0018] Wherein, the input terminal of the first logic gate is coupled to the first sampling terminal and the second sampling terminal of the corresponding detection input sub-circuit, respectively; the output terminal of the first logic gate is coupled to the input terminal of the second logic gate; and the output terminal of the second logic gate is coupled to the input terminal of the third logic gate.

[0019] Furthermore, in adjacent detection output sub-circuit groups, the output terminal of the third logic gate included in one detection output sub-circuit group is coupled to the input terminal of the third logic gate included in another detection output sub-circuit group, the input terminal of the third logic gate included in the first detection output sub-circuit group is coupled to the detection input terminal, and the output terminal of the third logic gate included in the last detection output sub-circuit group is coupled to the detection output terminal.

[0020] Optionally, the first logic gate includes an XOR gate; the second logic gate and the third logic gate both include an AND gate.

[0021] Optionally, the display driving circuit includes a source driving circuit, and the driving line includes a data line; the source driving circuit is coupled to multiple columns of pixels one-to-one through multiple data lines.

[0022] In each detection input sub-circuit group, at least two detection input sub-circuits are coupled to adjacent columns of pixels on each driving line.

[0023] Optionally, the thrust output circuit includes:

[0024] The storage sub-circuit stores the first thrust drive signal and the second thrust drive signal;

[0025] The selection sub-circuit is coupled to the detection output terminal, the storage sub-circuit, and the thrust output terminal, respectively, and is used to select and output the first thrust drive signal stored in the storage sub-circuit to the thrust output terminal if the detection output signal from the detection output terminal indicates that the display panel is in a heavy-load screen display state; and to select and output the second thrust drive signal stored in the storage sub-circuit to the thrust output terminal if the detection output signal from the detection output terminal indicates that the display panel is in a non-heavy-load screen display state.

[0026] Optionally, the storage sub-circuit includes: a first register and a second register, wherein the first register stores the first thrust drive signal and the second register stores the second thrust drive signal;

[0027] The selection sub-circuit includes: a selection switch; the control terminal of the selection switch is coupled to the detection output terminal, the input terminal of the selection switch is coupled to the first register and the second register respectively, and the output terminal of the selection switch is coupled to the thrust output terminal;

[0028] The selection switch is used to control the first register to be connected to the detection output terminal if the detection output signal from the detection output terminal indicates that the display panel is in a heavy-load screen display state, so as to output the first thrust drive signal to the detection output terminal; if the detection output signal from the detection output terminal indicates that the display panel is in a non-heavy-load screen display state, the second register to be connected to the detection output terminal, so as to output the second thrust drive signal to the detection output terminal.

[0029] Optionally, both the first thrust drive signal and the second thrust drive signal include: a positive 0-grayscale gamma voltage value and a 255-grayscale gamma voltage value, and a negative 0-grayscale gamma voltage value and a 255-grayscale gamma voltage value, for a total of four gamma voltage values; the thrust control circuit includes: four thrust output circuits for outputting the four gamma voltage values ​​one-to-one.

[0030] Wherein, the first thrust drive signal and the second thrust drive signal satisfy the following conditions:

[0031] The positive 255 grayscale gamma voltage value included in the first thrust drive signal is less than the positive 255 grayscale gamma voltage value included in the second thrust drive signal.

[0032] The positive 0-grayscale gamma voltage value included in the first thrust drive signal is greater than the positive 0-grayscale gamma voltage value included in the second thrust drive signal.

[0033] The negative polarity 0-grayscale gamma voltage value included in the first thrust drive signal is less than the negative polarity 0-grayscale gamma voltage value included in the second thrust drive signal.

[0034] The negative 255 grayscale gamma voltage value included in the first thrust drive signal is greater than the negative 255 grayscale gamma voltage value included in the second thrust drive signal.

[0035] Optionally, the thrust control circuit further includes: an amplifier circuit corresponding to each thrust output circuit;

[0036] The amplifier circuit is coupled between the corresponding thrust output circuit and the thrust output terminal, and is used to amplify the thrust drive signal output by the thrust output circuit and output it to the thrust output terminal.

[0037] Optionally, the amplification circuit includes: an operational amplifier;

[0038] The first input terminal of the operational amplifier is coupled to the thrust output circuit, and the output terminal of the operational amplifier is coupled to the second input terminal and the thrust output terminal, respectively.

[0039] On the other hand, a thrust control method for a display driving circuit is provided, applied to the thrust control circuit as described in the above aspect; the display driving circuit is coupled to multiple pixels arranged in an array in a display panel through multiple driving lines, and the thrust control method includes:

[0040] Based on the detection input signal from the detection input terminal and the driving signals transmitted from each driving line to the adjacent two rows of pixels, a detection output signal is output to the detection output terminal. The detection output signal is used to indicate the display state of the display panel when the display driving circuit drives multiple pixels to emit light.

[0041] If the detection output signal from the detection output terminal indicates that the display panel is in a heavy screen display state, then a first thrust drive signal is output to the thrust output terminal.

[0042] If the detection output signal from the detection output terminal indicates that the display panel is in a non-heavy screen display state, then a second thrust drive signal is output to the thrust output terminal.

[0043] The thrust output terminal is used to couple with the display driving circuit, and the voltage margin under the first thrust driving signal is greater than the voltage margin of the second thrust driving signal.

[0044] In another aspect, a display driver is provided, the display driver comprising: a display driving circuit, and a thrust control circuit as described in the preceding aspect;

[0045] The thrust control circuit is coupled to the display driving circuit and is used to control the thrust of the display driving circuit.

[0046] In another aspect, a display device is provided, the display device comprising: a display panel, and a display driver as described in yet another aspect above;

[0047] The display panel includes multiple pixels, and the display driver is coupled to the multiple pixels and is used to drive the multiple pixels to emit light.

[0048] In summary, the beneficial effects of the technical solution provided in this disclosure include at least the following:

[0049] A thrust control circuit and method for a display driving circuit, as well as a display driver and apparatus, are provided. The thrust control circuit includes a screen detection circuit and a thrust output circuit. The screen detection circuit reliably identifies the display state of the display panel based on the driving signals transmitted by the display driving circuit to adjacent rows of pixels via driving lines, and outputs a detection output signal indicating the display state to the thrust output circuit. The thrust output circuit can selectively and flexibly output thrust driving signals to the display driving circuit based on different display states indicated by the detection output signal, thereby controlling the thrust of the display driving circuit. Furthermore, the thrust output circuit increases the thrust of the display driving circuit in a heavily loaded screen display state compared to a non-heavy screen display state. This allows for flexible adjustment of the thrust based on different display states while also addressing the problem of insufficient pixel charging, ensuring a better display effect for the display panel. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 This is a schematic diagram of a display panel displaying an image according to an embodiment of this disclosure;

[0052] Figure 2 This is a waveform diagram of a data signal provided in an embodiment of this disclosure;

[0053] Figure 3This is a schematic diagram of the structure of a display panel and its display driving circuit provided in an embodiment of this disclosure;

[0054] Figure 4 This is a schematic diagram of the structure of a thrust control circuit provided in an embodiment of this disclosure;

[0055] Figure 5 This is a schematic diagram of the structure of an image detection circuit provided in an embodiment of this disclosure;

[0056] Figure 6 This is a schematic diagram of another image detection circuit provided in an embodiment of this disclosure;

[0057] Figure 7 This is a schematic diagram of another image detection circuit provided in this embodiment;

[0058] Figure 8 This is a schematic diagram of another image detection circuit provided in this embodiment;

[0059] Figure 9 This is a schematic diagram of the structure of a thrust output circuit provided in an embodiment of this disclosure;

[0060] Figure 10 This is a schematic diagram of another thrust output circuit provided in an embodiment of this disclosure;

[0061] Figure 11 This is a schematic diagram of another thrust control circuit provided in an embodiment of this disclosure;

[0062] Figure 12 This is a schematic diagram of another thrust control circuit provided in an embodiment of the present disclosure;

[0063] Figure 13 This is a flowchart of a thrust control method provided in an embodiment of this disclosure;

[0064] Figure 14 This is a schematic diagram of the structure of a display driver provided in an embodiment of this disclosure;

[0065] Figure 15 This is a schematic diagram of the structure of a display device provided in an embodiment of this disclosure. Detailed Implementation

[0066] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0067] As documented in the background art, in panel display applications (e.g., liquid crystal display panels), the thrust of the display driver circuit is a crucial indicator of circuit performance. This circuit can be an integrated circuit (IC). Considering cost, the thrust of the driver cannot be increased indefinitely. For example, in a 15.6-inch full high-definition (FHD) single-gate panel, the source driver IC (Source IC), which transmits data signals to the pixels, only needs a thrust of approximately 2 microseconds (μs) to meet the display requirements of a normal image. However, testing has revealed that this thrust is insufficient when displaying particularly demanding images, leading to insufficient pixel charging, incomplete pixel charging, and resulting in image abnormalities.

[0068] In some embodiments, such as Figure 1 As shown, when an H1line image appears where one row of pixels is bright and the other is dark in adjacent rows, or a Subpixel image appears where one row of pixels is bright and the other is dark in adjacent rows within the same column, the display panel can be considered to be in a reloaded display state. When similar images appear, taking a Subpixel image as an example, refer to... Figure 2 The waveform shown indicates that within each pair of adjacent rows, the data signal transmitted through each channel (ch) to the corresponding column of pixels undergoes frequent, fluctuating brightness, resulting in significant differences. This large difference slows down the push from the Source IC, increases the data signal transmission time, and may lead to insufficient pixel charging. Figure 2 The waveforms of channels ch1 to ch6 are schematically shown, and the signal waveforms of row 1 (H1) to row 5 (H5) are also schematically shown. Furthermore, combined with... Figure 1 and Figure 2 It can also be seen that the data signals transmitted in adjacent channels (e.g., ch1 and ch2) have opposite polarities, one positive and one negative. Figure 1 To illustrate the distinction, the non-overloaded screen display state, i.e., the normal screen, is also shown. Comparing this to the overloaded screen display state, it can be seen that in the normal screen display state, adjacent rows of pixels are both lit, rather than one row being lit and the other dark.

[0069] For example, taking a 15.6 FHD panel displaying a subpixel image and a normal image as an example, Table 1 shows a thrust comparison diagram of a SourceIC. Here, Slew Rate refers to the slew rate, measured in μs, which can be used to characterize thrust; Pr (positive running) corresponds to the rising edge of the positive polarity, and Pf (positive falling) corresponds to the falling edge of the positive polarity; Nr (negative running) corresponds to the rising edge of the negative polarity, and Nf (negative falling) corresponds to the falling edge of the negative polarity.

[0070] Table 1

[0071]

[0072] As shown in Table 1, the subpixel image takes longer to change both the rising and falling edges compared to the normal image. Consequently, the driving force of the source IC is slower, leading to display abnormalities.

[0073] As described in the above embodiments, to solve the display abnormality problem caused by insufficient pixel charging due to slowed thrust, one could consider increasing the thrust and improving performance through design. However, currently, due to cost and other factors, it is difficult to implement a solution that increases the IC size to increase thrust. Therefore, this disclosure provides a thrust control circuit for a display driver circuit (i.e., IC), which can autonomously identify the current display screen and flexibly control the thrust of the display driver circuit for different screens.

[0074] Figure 3 A schematic diagram of a display driver circuit is shown. Figure 3 As shown, the display driving circuit 10 is coupled to multiple pixels P1 arranged in an array in the display panel 20 via multiple driving lines L1. The array arrangement can refer to the multiple pixels P1 arranged in a specific order. Figure 1 The row and column arrangement shown includes multiple rows and columns of pixels P1. Optionally, as described above, the display driving circuit 10 here can refer to a source driving circuit Source IC. Correspondingly, the driving line L1 here can refer to a data line Data. The source driving circuit Source IC can be coupled one-to-one with multiple columns of pixels P1 through multiple data lines Data. The one-to-one coupling of "A" and "B" can mean that each A is coupled to one B, and different A are coupled to different Bs, which will not be elaborated further below. The source driving circuit Source IC can be coupled through multiple data lines Data via Figure 1 The multiple channels ch shown transmit data signals to multiple columns of pixels P1 to charge pixels P1 and drive pixels P1 to emit light.

[0075] exist Figure 3 Based on the display driver circuit shown, Figure 4 A schematic diagram of the thrust control circuit for a display driving circuit is shown. (Example) Figure 4 As shown, the thrust control circuit 00 includes: a screen detection circuit 01 and a thrust output circuit 02.

[0076] The screen detection circuit 01 is coupled to multiple drive lines L1, a detection input terminal Auto_SR, and a detection output terminal Auto_SR_1. Based on the detection input signal from the detection input terminal Auto_SR and the drive signals transmitted from each drive line L1 to adjacent rows of pixels P1, the screen detection circuit 01 outputs a detection output signal to the detection output terminal Auto_SR_1. This detection output signal indicates the display state of the display panel 20 when the display drive circuit 10 drives multiple pixels P1 to emit light, including a heavy-load screen display state and a non-heavy-load screen display state (e.g., Normal screen).

[0077] For example, the potential of the detection input signal from the detection input terminal Auto_SR can include a valid potential and an invalid potential. Optionally, one of the valid and invalid potentials can be a high potential relative to the other. This embodiment of the disclosure uses a high (H) valid potential and a low (L) invalid potential as an example. A valid detection input signal potential can be used to indicate the activation of the thrust control function, making the circuit active; an invalid detection input signal potential can be used to stop thrust control, making the circuit inactive. Correspondingly, the detection input terminal Auto_SR can also be called the thrust control enable terminal. Of course, in some other embodiments, the potential of the detection input signal from the detection input terminal Auto_SR can also be continuously maintained as a valid potential, i.e., the circuit remains active.

[0078] The image detection circuit 01, when activated by the detection input signal from the detection input terminal Auto_SR, outputs a detection output signal to the detection output terminal Auto_SR_1 based on the drive signals transmitted to the adjacent two rows of pixels P1 via each drive line L1. Optionally, the drive line L1 here can be a data line Data, and the drive signal can be a data signal. Combined with... Figure 2It is known that in the overloaded display state, the potential difference between the data signals transmitted to adjacent rows of pixels P1 is relatively large. For example, for a subpixel display, the data signal Data0 transmitted to the first row of pixels P1 via channel ch1 is 10000000, and the potential Data0 transmitted to the second row of pixels P1 is 00000000. Based on this, the screen detection circuit 01 can determine whether the difference between the two is greater than or equal to the difference threshold by comparing the difference of the most significant bit (MSB) bit7 of the data signals transmitted to adjacent rows of pixels P1. If it is greater than or equal to the difference threshold, it can be determined that the display panel is currently in the overloaded display state, and a detection output signal indicating the overloaded display state is output to the detection output terminal Auto_SR_1; if it is less than the difference threshold, it can be determined that the display panel is currently in the non-overloaded display state, and a detection output signal indicating the non-overloaded display state is output to the detection output terminal Auto_SR_1. The difference threshold here can be determined based on the critical value of the data signal change between heavy-load and non-heavy-load scenes, and is pre-stored in the scene detection circuit 01.

[0079] Optionally, in this embodiment of the disclosure, the potential of the detection output signal, similar to the detection input signal, may also include a valid potential (e.g., high potential H) and an invalid potential (e.g., low potential L). The detection output signal with a valid potential output to the detection output terminal Auto_SR_1 can be used to indicate that the display panel is currently in a heavy-load screen display state, while the detection output signal with an invalid potential output to the detection output terminal Auto_SR_1 can be used to indicate that the display panel is currently in a non-heavy-load screen display state.

[0080] Continue to refer to Figure 4 As can be seen, the thrust output circuit 02 is coupled to the detection output terminal Auto_SR_1 and the thrust output terminal Pout, respectively. The thrust output terminal Pout is used to couple with the display driving circuit 10. The thrust output circuit 02 is used to output a first thrust drive signal to the thrust output terminal Pout if the detection output signal from the detection output terminal Auto_SR_1 indicates that the display panel 20 is in a heavy-load screen display state; and to output a second thrust drive signal to the thrust output terminal Pout if the detection output signal from the detection output terminal Auto_SR_1 indicates that the display panel 20 is in a non-heavy-load screen display state. Furthermore, in this embodiment, the voltage headroom under the first thrust drive signal is greater than the voltage headroom of the second thrust drive signal. Headroom can refer to the voltage drop consumed internally by the circuit, measured in volts (V).

[0081] Optionally, the first thrust drive signal here can be considered a default value; the second thrust drive signal can be considered a correction value. Correspondingly, in this embodiment, when the thrust output circuit 02 determines that it is currently in a non-heavy-load screen display state based on the detection output signal (e.g., a high-potential H detection output signal), it can output a default thrust value to the thrust output circuit 02, meaning the thrust of the thrust output circuit 02 is not adjusted, and it can be considered that the thrust output circuit 02 has no thrust adjustment action. When the thrust output circuit 02 determines that it is currently in a heavy-load screen display state based on the detection output signal (e.g., a low-potential H detection output signal), it can output a corrected thrust value to the thrust output circuit 02, meaning the thrust of the thrust output circuit 02 is adjusted at this time, and it can be considered that the thrust output circuit 02 determines thrust adjustment. In conjunction with the above description, Table 2 below shows a truth table of the detection input signal provided by the detection input terminal Auto_SR and the detection output signal provided by the detection output terminal Auto_SR_1.

[0082] Table 2

[0083]

[0084] Referring to Table 2 above, it can be seen that when the potential of the detection input signal provided by Auto_SR at the detection input terminal is an effective potential, i.e., a high potential H, the function (i.e., thrust control function) can be activated. Based on this, when the potential of the detection output signal provided by Auto_SR_1 at the detection output terminal is also an effective potential, i.e., a high potential H, Headroom adjustment can be performed to increase thrust. However, when the potential of the detection output signal provided by Auto_SR_1 at the detection output terminal is an ineffective potential, i.e., a low potential L, Headroom does not operate, i.e., no Headroom adjustment is performed.

[0085] As described above, in this embodiment, the headroom of the first thrust drive signal output under heavy-load screen display state is greater than the headroom of the second thrust drive signal output under non-heavy-load screen display state. Table 3 below shows Pr and Pf under different voltage margin headrooms. Referring to Table 3, it can be seen that increasing the voltage margin headroom can shorten the duration of Pr and Pf, thereby increasing the thrust of the display drive circuit. Thus, for heavy-load screen display state, by increasing the thrust of the display drive circuit, the charging speed can be improved, thereby solving the screen abnormality problem caused by insufficient charging or incomplete charging.

[0086] Table 3

[0087]

[0088] It should be noted that, Figure 3The experimental data shown were determined under conditions where certain external factors were fixed. These external factors typically include: panel conditions, the PWRC power control signal setting, and the code setting in the timing controller (TCON), i.e., the TCON code setting. Here, TCON refers to the circuit connected to the display driver circuit 10, which is used to control the operation of the display driver circuit 10.

[0089] In summary, this disclosure provides a thrust control circuit for a display driving circuit. This thrust control circuit includes a screen detection circuit and a thrust output circuit. The screen detection circuit reliably identifies the display state of the display panel based on the driving signals transmitted by the display driving circuit to adjacent rows of pixels via driving lines, and then outputs a detection output signal indicating the display state to the thrust output circuit. The thrust output circuit can selectively and flexibly output thrust driving signals to the display driving circuit based on different display states indicated by the detection output signal, thereby controlling the thrust of the display driving circuit. Furthermore, the thrust output circuit increases the thrust of the display driving circuit in a heavily loaded screen display state compared to a non-heavy screen display state. Thus, while flexibly adjusting the thrust based on different display states, it also solves the problem of insufficient pixel charging, ensuring a better display effect for the display panel.

[0090] Optional, Figure 5 This is a schematic diagram of the structure of a screen detection circuit 01 provided in an embodiment of this disclosure. Figure 5 As shown, the image detection circuit 01 may include: multiple detection input sub-circuits 011 and detection output sub-circuits 012.

[0091] The multiple detection input sub-circuits 011 can be coupled one-to-one with multiple driving lines L1, and each detection input sub-circuit 011 can also be coupled to the first sampling terminal S1 and the second sampling terminal S2 respectively. Each detection input sub-circuit 011 can be used to transmit the driving signal transmitted by the corresponding driving line L1 to the two adjacent rows of pixels P1 to the first sampling terminal S1 and the second sampling terminal S2 respectively.

[0092] The detection output sub-circuit 012 can be coupled to the first sampling terminal S1 and the second sampling terminal S2 of each detection input sub-circuit 011, and can also be coupled to the detection input terminal Auto_SR and the detection output terminal Auto_SR_1. The detection output sub-circuit 012 can be used to output a detection output signal to the detection output terminal Auto_SR_1 based on the detection input signal, the driving signal received at the first sampling terminal S1, and the driving signal received at the second sampling terminal S2.

[0093] As described in the above embodiment, when the detection input signal indicates that a thrust drive signal is output to the thrust output terminal Pout (i.e., the potential of the detection input signal is an effective potential), if the potential difference between the drive signal received by the first sampling terminal S1 and the drive signal received by the second sampling terminal S2 is greater than or equal to the difference threshold, then the detection output sub-circuit 012 can output a detection output signal to the detection output terminal Auto_SR_1 indicating that the display panel 20 is in a heavy-load screen display state. If the potential difference between the drive signal received by the first sampling terminal S1 and the drive signal received by the second sampling terminal S2 is less than the difference threshold, then the detection output sub-circuit 012 can output a detection output signal to the detection output terminal Auto_SR_1 indicating that the display panel 20 is in a non-heavy-load screen display state.

[0094] Optional, continue to refer to Figure 6 As can be seen from the image detection circuit 01 shown, in some embodiments, the multiple detection input sub-circuits 011 can be divided into different multiple detection input sub-circuit groups 011Z, and each detection input sub-circuit group 011Z may include at least two detection input sub-circuits 011. Optionally, the columns of pixels P1 coupled to the driving lines L1 of at least two detection input sub-circuits 011 in each detection input sub-circuit group 011Z can be adjacent. This facilitates wiring.

[0095] Example, Figure 6 In the image detection circuit 01 shown, the three detection input sub-circuits 011, which are coupled to every three adjacent columns of pixels P1 via three drive lines L1, are grouped together. Of course, this is only an illustrative division and does not limit the solution disclosed herein.

[0096] Based on this, continue to refer to Figure 6 It can be seen that the detection output sub-circuit 012 may include multiple detection output sub-circuit groups 012Z that correspond one-to-one with multiple detection input sub-circuit groups 011Z.

[0097] Each detection output sub-circuit group 012Z can be coupled to the first sampling terminal S1 and the second sampling terminal S2 of each detection input sub-circuit 011 in the corresponding detection input sub-circuit group 011Z. Adjacent detection output sub-circuit groups 012Z can be coupled sequentially. The first detection output sub-circuit group 012Z can also be coupled to the detection input terminal Auto_SR, and the last detection output sub-circuit group 012Z can also be coupled to the detection output terminal Auto_SR_1. Multiple detection output sub-circuit groups 012Z can be used to output detection output signals to the detection output terminal Auto_SR_1 based on the detection input signal, the driving signal received by the first sampling terminal S1, and the driving signal received by the second sampling terminal S2.

[0098] Optional, in Figure 6 Based on this, continue to refer to Figure 7 As can be seen from the shown image detection circuit 01, in some embodiments, each detection output sub-circuit group 012Z may include: at least two first logic gates M1, one second logic gate M2, and one third logic gate M3, corresponding one-to-one with at least two detection input sub-circuits 011 in the corresponding detection input sub-circuit group 011Z. For example, Figure 6 Each detection input sub-circuit group 011Z shown includes three detection input sub-circuits 011. Correspondingly, each detection output sub-circuit group 012Z may include three first logic gates M1.

[0099] In this circuit, the input terminal of each first logic gate M1 can be coupled to the first sampling terminal S1 and the second sampling terminal S2 of the corresponding detection input sub-circuit 011, respectively. The output terminal of each first logic gate M1 can be coupled to the input terminal of the second logic gate M2, and the output terminal of the second logic gate M2 can be coupled to the input terminal of the third logic gate M3. In adjacent detection output sub-circuit groups 012Z, the output terminal of each third logic gate M3 included in one detection output sub-circuit group 012Z is ​​coupled to the input terminal of the third logic gate M3 included in another detection output sub-circuit group 012Z. The input terminal of each third logic gate M3 included in the first detection output sub-circuit group 012Z is ​​coupled to the detection input terminal Auto_SR, and the output terminal of each third logic gate M3 included in the last detection output sub-circuit group 012Z is ​​coupled to the detection output terminal Auto_SR_1.

[0100] Optional, in Figure 7 Based on this, continue to refer to Figure 8 As can be seen from the image detection circuit 01 shown, the first logic gate M1 may include an XOR gate. The second logic gate M2 and the third logic gate M3 may both include an AND gate.

[0101] Optional, continue to refer to Figure 8 It can be seen that each detection input sub-circuit 011 may include: a first latch 1 st Latch and Second Latch 2 nd Latch.

[0102] Among them, the first latch 1 st The input of the latch can be connected to the drive line L1 ( Figure 8 (Not shown) Coupled, first latch 1 st The output of the latch can be connected to the second latch 2. nd The input of the latch is coupled to the first sampling terminal S1, and the second latch 2 nd The output of the latch can be coupled to the second sampling terminal S2.

[0103] Optionally, in some embodiments, reference continues to be made to... Figure 8 It can be seen that a level shift circuit (LS) may also be included, which can be coupled to the second latch 2. nd Between the latch and the display panel 20, the level conversion circuit LS is used to convert the signal transmitted through the second latch 2... nd The data signal output by the latch is level-converted and then transmitted to the display panel 20, specifically to pixel P1 in the display panel 20, thereby driving pixel P1 to reliably emit light. For example, the level conversion circuit LS can be a boost circuit.

[0104] Optionally, both the first thrust drive signal and the second thrust drive signal may include: a positive 0-grayscale gamma voltage value (represented by Gamma7, G7) and a 255-grayscale gamma voltage value (represented by Gamma1, G1), and a negative 0-grayscale gamma voltage value (represented by Gamma8, G8) and a 255-grayscale gamma voltage value (represented by Gamma14, G14), for a total of four gamma voltage values. Accordingly, the thrust control circuit 00 described in this embodiment may include: four thrust output circuits 02 for outputting the four gamma voltage values ​​G1, G7, G8, and G14 one-to-one through the four thrust output terminals Pout.

[0105] The first thrust drive signal and the second thrust drive signal can satisfy the following conditions:

[0106] The positive 255 grayscale gamma voltage value (i.e., G1) included in the first thrust drive signal is less than the positive 255 grayscale gamma voltage value included in the second thrust drive signal.

[0107] The positive zero-grayscale gamma voltage value (i.e., G7) included in the first thrust drive signal is greater than the positive zero-grayscale gamma voltage value included in the second thrust drive signal.

[0108] The negative 0-grayscale gamma voltage value (i.e., G8) included in the first thrust drive signal is less than the negative 0-grayscale gamma voltage value included in the second thrust drive signal.

[0109] The negative 255 grayscale gamma voltage value (i.e., G14) included in the first thrust drive signal is greater than the negative 255 grayscale gamma voltage value included in the second thrust drive signal.

[0110] That is, in this embodiment of the present disclosure, the voltage difference between AVDD and G1 can be increased by decreasing G1 and increasing G7; at the same time, the voltage difference between GND and G14 can be increased by decreasing G8 and increasing G14, thereby reliably increasing the headroom. Here, AVDD and GND refer to the power supply terminal and ground terminal, respectively, which are essential terminals of the drive circuit.

[0111] Optionally, based on the above embodiments, Figure 9 A schematic diagram of a thrust output circuit 02 provided in an embodiment of this disclosure is shown. Figure 9 As shown, the thrust output circuit 02 may include a storage sub-circuit 021 and a selection sub-circuit 022.

[0112] The storage sub-circuit 021 can store the first thrust drive signal and the second thrust drive signal.

[0113] The selection sub-circuit 022 can be coupled to the detection output terminal Auto_SR_1, the storage sub-circuit 021, and the thrust output terminal Pout, respectively. The selection sub-circuit 022 can be used to select and output the first thrust drive signal stored in the storage sub-circuit 021 to the thrust output terminal Pout if the detection output signal from the detection output terminal Auto_SR_1 indicates that the display panel 20 is in a heavy-load screen display state. If the detection output signal from the detection output terminal Auto_SR_1 indicates that the display panel 20 is in a non-heavy-load screen display state, it can select and output the second thrust drive signal stored in the storage sub-circuit 021 to the thrust output terminal Pout.

[0114] That is, as can be seen from the above embodiments, in the heavy-load screen display state, the selection sub-circuit 022 can output a modified thrust drive signal to the display drive circuit 10 to increase the thrust of the display drive circuit 10; while in the non-heavy-load screen display state, the selection sub-circuit 022 can output a default thrust drive signal to the display drive circuit 10.

[0115] Of course, in some other embodiments, the thrust output circuit 02 can automatically generate the required thrust drive signal and output it to the display drive circuit 10 based on the current display state, instead of directly selecting the stored value.

[0116] Optional, in Figure 9 On this basis, Figure 10 A schematic diagram of another thrust output circuit 02 is shown. (See diagram for example.) Figure 10 As shown, the storage sub-circuit 021 may include: a first register (Register, REG) REG1 and a second register REG2. The first register REG1 may store a first thrust drive signal, and the second register REG2 may store a second thrust drive signal.

[0117] The selection sub-circuit 022 may include a selection switch K1. The control terminal of selection switch K1 can be coupled to the detection output terminal Auto_SR_1, the input terminal of selection switch K1 can be coupled to the first register REG1 and the second register REG2 respectively, and the output terminal of selection switch K1 can be coupled to the thrust output terminal Pout. Selection switch K1 can be used to control the first register REG1 to conduct with the detection output terminal Auto_SR_1 if the detection output signal from the detection output terminal Auto_SR_1 indicates that the display panel 20 is in a heavy-load screen display state (i.e., the potential of the detection output signal is high H), so as to output a first thrust drive signal to the detection output terminal Auto_SR_1. If the detection output signal from the detection output terminal Auto_SR_1 indicates that the display panel 20 is in a non-heavy-load screen display state (i.e., the potential of the detection output signal is low L), it can control the second register REG2 to conduct with the detection output terminal Auto_SR_1, so as to output a second thrust drive signal to the detection output terminal Auto_SR_1.

[0118] That is, in this embodiment of the present disclosure, the selector circuit 022, under the control of the detection output signal provided by the detection output terminal Auto_SR_1, can control the on / off state of the first register REG1 and the second register REG2 with the detection output terminal Auto_SR_1 to output a first thrust drive signal or a second thrust drive signal to the detection output terminal Auto_SR_1. Here, the detection output signal can also be considered as a switching signal.

[0119] Optionally, the selector switch K1 can be a switching transistor or a single-pole double-throw switch.

[0120] Of course, the above control method for selecting switch K1 is only illustrative. For example, in some embodiments, taking the first register REG1 as an example, the selector circuit 022 can also output an enable signal to the first register REG1 so that the first thrust drive signal stored in the first register REG1 can be transmitted to the display drive circuit 10, and output an enable signal to the first register REG1 to prevent the first thrust drive signal stored in the first register REG1 from being transmitted to the display drive circuit 10. The same applies to the second register REG2.

[0121] Taking the storage sub-circuit 021, which includes registers, as an example, Table 4 below schematically shows a default value (i.e., the second thrust drive signal) and a correction value (i.e., the first thrust drive signal) for a thrust drive signal, including G1, G7, G8, and G14, which are represented by binary-corresponding gamma values ​​and decimal-corresponding gamma voltages, respectively. The first register REG1, which stores G1, G7, G8, and G14, is identified as REG13[7:0], REG23[7:0], REG24[7:0], and REG34[7:0], respectively, and is used to indicate the address of the register and store the gamma packet.

[0122] Table 4

[0123]

[0124] Referring to Table 4 above, it can be further seen that, in this embodiment of the present disclosure, the pressure difference between AVDD and G1 can be increased by decreasing G1 and increasing G7; at the same time, the pressure difference between GND and G14 can be increased by decreasing G8 and increasing G14; thereby ultimately increasing the headroom.

[0125] Optionally, in some embodiments, reference continues to be made to... Figure 11 As can be seen from the alternative thrust control circuit shown, the thrust control circuit 00 may further include: an amplifier circuit 03 corresponding to each thrust output circuit 02. For example, based on a circuit including four thrust output circuits 02, refer to... Figure 11 It may include four amplifier circuits 03 that correspond one-to-one with the four thrust output circuits 02.

[0126] The amplifier circuit 03 can be coupled between the corresponding thrust output circuit 02 and the thrust output terminal Pout, and can be used to amplify the thrust drive signal output by the thrust output circuit 02 and output it to the thrust output terminal Pout. In this way, the thrust drive signal output to the display drive circuit 10 can be more accurate, thereby ensuring the reliable operation of the display drive circuit 10 and resulting in better display effect.

[0127] It should be noted that, Figure 10 The selection switch K1 is not shown. The default second thrust drive signal is represented by default G1, default G7, default G8 and default G14. The modified first thrust drive signal is represented by modified G1, modified G7, modified G8 and modified G14. The four thrust output circuits 02 output G1, G7, G8 and G14 respectively through four output terminals Pout to achieve the purpose of thrust control.

[0128] Optional, in Figure 11 Based on this, continue to refer to Figure 12As can be seen from another thrust control circuit shown, the amplifier circuit 03 may include an operational amplifier (OP).

[0129] The first input terminal of the operational amplifier OP can be coupled to the thrust output circuit 02, and the output terminal of the operational amplifier OP can be coupled to the second input terminal and the thrust output terminal Pout of the operational amplifier OP, respectively.

[0130] Optional, continue to refer to Figure 12 It can also be seen that, in some embodiments, a terminal providing four gamma standard values, namely VGMA1, VGAM7, VGAM8, and VGAM14, may be included. These four gamma standard values ​​are different from both the first thrust drive signal and the second thrust drive signal. For example, G1, G7, G8, and G14 in the first and second thrust drive signals can all be considered to be generated based on the corresponding VGMA1, VGAM7, VGAM8, and VGAM14.

[0131] Furthermore, the four gamma standard values ​​can be transmitted to the select line (SEL) via four different paths. Specifically, VGMA1 and VGMA14 are transmitted to SEL1; VGAM8 and VGAM14 are transmitted to SEL2. Based on this embodiment, a gating module ST may also be included. The four terminals providing VGMA1, VGAM7, VGAM8, and VGAM14 can be coupled to SEL via four corresponding gating modules ST, and the four thrust output circuits 02 can also be coupled to operational amplifiers OP via these four gating modules ST. The gating module ST can be used to select whether the gamma standard value is output to SEL or to select whether the thrust drive signal provided by the thrust output circuit 02 is output via operational amplifier OP to the thrust output terminal Pout coupled to the display drive circuit 10. For example, Figure 12 The selection module ST shown schematically illustrates the selection states of 0 and 1. In the selection state indicated by 0, the gamma standard value can be selected to be output to SEL; in the selection state indicated by 1, the thrust drive signal can be selected to be output to the display drive circuit 10. Of course, this is only an illustrative illustration.

[0132] As described in the above embodiments, the thrust control circuit 00 provided in this disclosure has the ability to autonomously detect the display screen. Based on the detected display screen state, it can flexibly control the thrust of the display driving circuit 10, enabling the display panel to reliably display the image. Furthermore, this thrust control method eliminates the need to increase the size of the display driving circuit 10, thus saving costs and broadening its application range.

[0133] Optionally, in other embodiments, the TCON described in the above embodiments may also have the ability to detect screen images. When the TCON detects that the display panel is displaying a heavy screen image, it may also adjust the thrust of the display driving circuit 10.

[0134] In summary, this disclosure provides a thrust control circuit for a display driving circuit. This thrust control circuit includes a screen detection circuit and a thrust output circuit. The screen detection circuit reliably identifies the display state of the display panel based on the driving signals transmitted by the display driving circuit to adjacent rows of pixels via driving lines, and then outputs a detection output signal indicating the display state to the thrust output circuit. The thrust output circuit can selectively and flexibly output thrust driving signals to the display driving circuit based on different display states indicated by the detection output signal, thereby controlling the thrust of the display driving circuit. Furthermore, the thrust output circuit increases the thrust of the display driving circuit in a heavily loaded screen display state compared to a non-heavy screen display state. Thus, while flexibly adjusting the thrust based on different display states, it also solves the problem of insufficient pixel charging, ensuring a better display effect for the display panel.

[0135] Based on the above embodiments, this disclosure also provides a thrust control method for a display driving circuit, which is applied to the thrust control circuit 00 described in the above embodiments. Figure 3 As shown, the display driving circuit 10 is coupled to multiple pixels P1 arranged in an array in the display panel 20 via multiple driving lines L1. Figure 13 As shown, the thrust control method described in this embodiment includes:

[0136] Step 1301: Based on the detection input signal from the detection input terminal and the driving signals transmitted from each driving line to the adjacent two rows of pixels, output the detection output signal to the detection output terminal.

[0137] The detection output signal is used to indicate the display state of the display panel when the display driving circuit drives multiple pixels to emit light.

[0138] Step 1302: If the detection output signal from the detection output terminal indicates that the display panel is in a heavy-load screen display state, then output the first thrust drive signal to the thrust output terminal.

[0139] Step 1303: If the detection output signal from the detection output terminal indicates that the display panel is in a non-loaded screen display state, then output a second thrust drive signal to the thrust output terminal.

[0140] The thrust output terminal is used to couple with the display driving circuit, and the voltage margin under the first thrust driving signal is greater than the voltage margin of the second thrust driving signal.

[0141] Since the thrust control method can have essentially the same implementation and technical effect as the thrust control circuit described in the previous embodiments, for the sake of brevity, the specific implementation and technical effect of the thrust control method will not be described again here.

[0142] This disclosure also provides a display driver. For example... Figure 14 As shown, the display driver 000 includes: a display driving circuit 10, and a thrust control circuit 00 as described in the above embodiments.

[0143] The thrust control circuit 00 is coupled to the display driving circuit 10 and is used to control the thrust of the display driving circuit 10. Optionally, based on the display driving circuit 10 being a source driving circuit (Source IC), the display driver described herein can refer to a source driver. In one embodiment of this disclosure, the display driving circuit 10 and the thrust control circuit 00 can be integrated.

[0144] Since the display driver can have essentially the same technical effect as the thrust control circuit described in the previous embodiments, for the sake of brevity, the technical effect of the display driver will not be described again here.

[0145] This disclosure also provides a display device. For example... Figure 15 As shown, the display device includes: a display panel 20, and as shown in the figure. Figure 14 The display driver shown is 000.

[0146] Among them, such as Figure 3 As shown, the display panel 20 includes a plurality of pixels P1 ( Figure 15 (Not shown again), the display driver 000 is coupled to a plurality of pixels P1 and is used to drive the plurality of pixels P1 to emit light. Optionally, based on the display driver 000 being the source driver described in the above embodiments, combined with Figure 3 The display driver 000 described here can be coupled one-to-one with multiple columns of pixels P1 through multiple data lines Data, and is used to transmit data signals to the multiple columns of pixels P1 to charge the multiple columns of pixels P1 and make the pixels P1 emit light.

[0147] Since the display device can have essentially the same technical effects as the display driver described in the previous embodiments, the technical effects of the display device will not be repeated here for the sake of brevity.

[0148] Optionally, the display device described in the embodiments of this disclosure can be any product or component with display function, such as electronic paper, mobile phone, tablet computer, television, monitor, laptop computer, or digital photo frame.

[0149] It should be noted that the terminology used in the embodiments of this disclosure is for illustrative purposes only and is not intended to limit the scope of this disclosure. Unless otherwise defined, the technical or scientific terms used in the implementation of this disclosure should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains.

[0150] For example, the terms “first,” “second,” or “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components.

[0151] Similarly, words like "one" or "one" do not indicate a quantity limit, but rather that there is at least one.

[0152] The word “includes” or similar terms means that the elements or objects preceding “includes” or “include” cover the elements or objects listed after “includes” or “include” or their equivalents, and do not exclude other elements or objects.

[0153] "Up," "down," "left," or "right" are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0154] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A push control circuit of a display drive circuit, characterized by comprising: The display driving circuit is coupled with a plurality of pixels arranged in an array in a display panel through a plurality of driving lines, and the thrust control circuit comprises: a picture detection circuit coupled with the plurality of driving lines, a detection input end and a detection output end respectively, and configured to output a detection output signal to the detection output end based on a detection input signal from the detection input end and driving signals transmitted to adjacent two rows of pixels by each driving line, the detection output signal being used to indicate a display state of the display panel when the display driving circuit drives the plurality of pixels to emit light; a thrust output circuit coupled with the detection output end and a thrust output end respectively, and configured to output a first thrust driving signal to the thrust output end if the detection output signal from the detection output end indicates that the display panel is in a heavy-load picture display state, and output a second thrust driving signal to the thrust output end if the detection output signal from the detection output end indicates that the display panel is in a non-heavy-load picture display state; wherein a voltage margin of the first thrust driving signal is greater than a voltage margin of the second thrust driving signal, and the thrust output end is used to be coupled with the display driving circuit; wherein the first thrust driving signal and the second thrust driving signal each comprise four gamma voltage values, i.e., a 0 gray scale gamma voltage value and a 255 gray scale gamma voltage value of positive polarity, and a 0 gray scale gamma voltage value and a 255 gray scale gamma voltage value of negative polarity; the thrust control circuit comprises four thrust output circuits used to output the four gamma voltage values one by one; and the first thrust driving signal and the second thrust driving signal satisfy the following conditions: the 255 gray scale gamma voltage value of positive polarity comprised in the first thrust driving signal is less than the 255 gray scale gamma voltage value of positive polarity comprised in the second thrust driving signal; the 0 gray scale gamma voltage value of positive polarity comprised in the first thrust driving signal is greater than the 0 gray scale gamma voltage value of positive polarity comprised in the second thrust driving signal; the 0 gray scale gamma voltage value of negative polarity comprised in the first thrust driving signal is less than the 0 gray scale gamma voltage value of negative polarity comprised in the second thrust driving signal; the 255 gray scale gamma voltage value of negative polarity comprised in the first thrust driving signal is greater than the 255 gray scale gamma voltage value of negative polarity comprised in the second thrust driving signal.

2. The thrust control circuit of claim 1, wherein, The picture detection circuit comprises: a plurality of detection input sub-circuits coupled with the plurality of driving lines one by one, and each detection input sub-circuit is further coupled with a first sampling end and a second sampling end respectively, and is configured to transmit the driving signals transmitted to adjacent two rows of pixels by a corresponding driving line to the first sampling end and the second sampling end respectively; a detection output sub-circuit coupled with the first sampling end and the second sampling end of each detection input sub-circuit respectively, and further coupled with the detection input end and the detection output end respectively, and configured to output a detection output signal to the detection output end based on the detection input signal, the driving signal received by the first sampling end and the driving signal received by the second sampling end; The detection input sub-circuit includes a first latch and a second latch.

3. The thrust control circuit of claim 2, wherein, The input end of the first latch is coupled with the driving line, the output end of the first latch is coupled with the input end of the second latch and the first sampling end respectively, and the output end of the second latch is coupled with the second sampling end. The plurality of detection input sub-circuits are divided into different detection input sub-circuit groups, each detection input sub-circuit group includes at least two detection input sub-circuits, and the detection output sub-circuit includes a plurality of detection output sub-circuit groups corresponding to the plurality of detection input sub-circuit groups.

4. The thrust control circuit of claim 2, wherein, Each detection output sub-circuit group is coupled with the first sampling end and the second sampling end of each detection input sub-circuit in the corresponding detection input sub-circuit group, and adjacent detection output sub-circuit groups are coupled in sequence, the first detection output sub-circuit group is further coupled with the detection input end, and the last detection output sub-circuit group is further coupled with the detection output end. The detection output sub-circuit group includes at least two first logic gates corresponding to at least two detection input sub-circuits in the corresponding detection input sub-circuit group, a second logic gate and a third logic gate.

5. The thrust control circuit of claim 4, wherein, The input end of the first logic gate is coupled with the first sampling end and the second sampling end of the corresponding detection input sub-circuit respectively, the output end of the first logic gate is coupled with the input end of the second logic gate, and the output end of the second logic gate is coupled with the input end of the third logic gate. In adjacent detection output sub-circuit groups, the output end of the third logic gate included in one detection output sub-circuit group is coupled with the input end of the third logic gate included in another detection output sub-circuit group, the input end of the third logic gate included in the first detection output sub-circuit group is coupled with the detection input end, and the output end of the third logic gate included in the last detection output sub-circuit group is coupled with the detection output end. The first logic gate includes an exclusive OR gate, and the second logic gate and the third logic gate each include an AND gate.

6. The thrust control circuit of claim 5, wherein, The display driving circuit includes a source driving circuit, the driving line includes a data line, and the source driving circuit is coupled with a plurality of columns of pixels in one-to-one correspondence through a plurality of data lines.

7. The thrust control circuit of claim 4, wherein, ​ Each column of pixels coupled to each driving line coupled to at least two detection input sub-circuits in each detection input sub-circuit group is adjacent.

8. The thrust control circuit according to any one of claims 1 to 7, characterized in that, The thrust output circuit comprises: A storage sub-circuit storing the first thrust drive signal and the second thrust drive signal; A selection sub-circuit coupled to the detection output end, the storage sub-circuit and the thrust output end, and configured to select the first thrust drive signal stored in the storage sub-circuit to output to the thrust output end if the detection output signal from the detection output end indicates that the display panel is in a heavy-load picture display state, and select the second thrust drive signal stored in the storage sub-circuit to output to the thrust output end if the detection output signal from the detection output end indicates that the display panel is in a non-heavy-load picture display state.

9. The thrust control circuit of claim 8, wherein, The storage sub-circuit comprises: a first register storing the first thrust drive signal and a second register storing the second thrust drive signal; The selection sub-circuit comprises: a selection switch, a control end of the selection switch being coupled to the detection output end, input ends of the selection switch being coupled to the first register and the second register respectively, and an output end of the selection switch being coupled to the thrust output end; The selection switch is configured to control the first register to be conductive to the detection output end to output the first thrust drive signal to the detection output end if the detection output signal from the detection output end indicates that the display panel is in a heavy-load picture display state, and control the second register to be conductive to the detection output end to output the second thrust drive signal to the detection output end if the detection output signal from the detection output end indicates that the display panel is in a non-heavy-load picture display state.

10. The thrust control circuit according to any one of claims 1 to 7, characterized in that, The thrust control circuit further comprises: an amplification circuit corresponding to each thrust output circuit; The amplification circuit is coupled between the corresponding thrust output circuit and the thrust output end, and is configured to amplify the thrust drive signal output by the thrust output circuit and output the amplified thrust drive signal to the thrust output end.

11. The thrust control circuit of claim 10, wherein, The amplification circuit comprises: an operational amplifier; The first input end of the operational amplifier is coupled to the thrust output circuit, and the output end of the operational amplifier is coupled to the second input end of the operational amplifier and the thrust output end respectively.

12. A thrust control method of a display drive circuit, characterized by, The display driving circuit is applied to the thrust control circuit in any one of claims 1 to 11, and the thrust control method comprises: Based on the detection input signal from the detection input end and the driving signal transmitted to the adjacent two rows of pixels by each driving line, a detection output signal is output to the detection output end, the detection output signal being used to indicate the display state of the display panel when the display driving circuit drives the plurality of pixels to emit light; If the detection output signal from the detection output end indicates that the display panel is in a heavy-load picture display state, a first thrust drive signal is output to the thrust output end; if the detection output signal from the detection output terminal indicates that the display panel is in a non-heavy picture display state, outputting a second thrust drive signal to the thrust output terminal; wherein the thrust output terminal is configured to be coupled with the display driving circuit, and a voltage margin of the first thrust drive signal is greater than a voltage margin of the second thrust drive signal.

13. A display driver, comprising: The display driver comprises a display driving circuit and the thrust control circuit according to any one of claims 1 to 11. The thrust control circuit is coupled with the display driving circuit and configured to control a thrust of the display driving circuit.

14. A display device comprising: The display device comprises a display panel and the display driver according to claim 13. The display panel comprises a plurality of pixels, and the display driver is coupled with the plurality of pixels and configured to drive the plurality of pixels to emit light.

Images