Display module and electronic terminal

Abstract

To solve an EMI radiation problem or to provide accurate Transmission of a signal in a display module.SOLUTION: The present invention provides a display module and an electronic terminal. The display module comprises a display panel, a power management module, and a source driving module, where the display panel comprises a plurality of pixel units, and the source driving module is electrically connected to the plurality of pixel units and a control motherboard. Herein, the display module further comprise a signal processing module electrically connected to the source driving module and the power management module, where the signal processing module is loaded with a first signal generated by the power management module, and processes the first signal into a second signal to be loaded into the source driving module, energy of the second signal is different from energy of the first signal. This configuration can reduce EMI radiation generated by the source driving module or solve the problem that the signal cannot be accurately transmitted due to small energy thereof, thereby enabling effectively expanding a usage range of the display module.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to the field of display technology, in particular to the field of manufacturing display modules, and more particularly to a display module and an electronic terminal. [Background technology]

[0002] The display module is provided with multiple driving chips for driving. Here, when a signal within a certain frequency range is transmitted in the source driving chip, the energy of the signal within the frequency range may be relatively concentrated and large, which may easily cause EMI (Electromagnetic Interference) radiation and affect the normal operation of other systems or other subsystems within the system; or, if the energy of the signal within the frequency range is small, there may be a problem that the signal cannot be transmitted accurately due to attenuation, which limits and reduces the scope of use of the display module.

[0003] Therefore, there exists a problem of EMI radiation in the source driver chip in the conventional display module, and improvement is urgently required. Summary of the Invention [Problem to be solved by the invention]

[0004] In an embodiment of the present invention, a display module and an electronic terminal are provided to solve the technical problem that in conventional display modules, the energy of some signals is relatively concentrated and large, causing EMI radiation in the source driving chip, or the energy is small, preventing accurate transmission of signals. [Means for solving the problem]

[0005] The display module provided in the embodiment of the present invention comprises: a display panel including a plurality of pixel units; A power management module; a source driving module electrically connected with a plurality of the pixel units and a control motherboard; Here, the display module further includes a signal processing module electrically connected to the source driving module and the power management module, the signal processing module is loaded with a first signal generated by the power management module, and processes the first signal into a second signal which is loaded into the source driving module, and the energy of the second signal is different from the energy of the first signal.

[0006] In one embodiment, the energy of the second signal is less than the energy of the first signal.

[0007] In one embodiment, the first signal includes a first sub-signal and a second sub-signal, and the second signal includes a third sub-signal and a fourth sub-signal; The signal processing module includes: The source driving module includes a first sub-signal processing module to which a first sub-signal generated by the power management module is loaded and which processes the first sub-signal into a third sub-signal which is loaded into the source driving module, the energy of the third sub-signal being smaller than the energy of the first sub-signal.

[0008] In one embodiment, a difference value between the energy of the third sub-signal and the energy of the first sub-signal is greater than a difference value between the energy of the fourth sub-signal and the energy of the second sub-signal.

[0009] In one embodiment, the first sub-signal processing module includes one of an impedance step-down circuit and a low dropout linear regulator.

[0010] In one embodiment, the signal processing module further comprises: A second sub-signal processing module is loaded with a second sub-signal generated by the power management module and processes the second sub-signal into a fourth sub-signal that is loaded into the source driving module, where the energy of the fourth sub-signal is smaller than the energy of the second sub-signal.

[0011] In one embodiment, the second sub-signal processing module includes the other of the impedance step-down circuit and the low-dropout linear regulator.

[0012] In one embodiment, the first sub-signal comprises an analog voltage signal and the second sub-signal comprises a digital voltage signal.

[0013] In one embodiment, the source driving module comprises: a transistor having a source or a drain that is grounded and a gate that is electrically connected to the signal processing module; Here, the second signal is a voltage signal, and the magnitude of the voltage of the gate of the transistor is positively correlated with the magnitude of the voltage corresponding to the second signal.

[0014] In one embodiment, the display device includes a control motherboard including the power management module, and the source driving module is disposed between a plurality of the pixel units and the control motherboard; wherein the signal processing module is provided on the control motherboard; or A flexible flat cable and a connection plate are provided between the source driving module and the control motherboard, the flexible flat cable is connected to the control motherboard and the connection plate, and the signal processing module is provided on the connection plate.

[0015] An embodiment of the present invention provides an electronic terminal including any of the display modules described above.

[0016] The present invention provides a display module and its driving method, and provides a signal processing module electrically connected to a source driving module and a power management module. A first signal generated by the power management module is loaded, and the first signal is processed into a second signal loaded into the source driving module, thereby realizing that the energy of the second signal is different from the energy of the first signal. By rationally configuring the signal processing module, the second signal can be increased or decreased compared with the first signal, which can reduce the EMI radiation generated by the source driving module, or improve the problem of inaccurate signal transmission due to low energy, and effectively expand the application scope of the display module. [Brief description of the drawings]

[0017] The present invention will be further described with reference to the drawings below. It should be noted that the drawings in the following description are only for illustrating some embodiments of the present invention, and those skilled in the art can derive other drawings based on these drawings without any creative efforts. [Figure 1] FIG. 2 is a schematic plan view of a display module provided in an embodiment of the present invention after being unfolded. [Diagram 2] 2 is a schematic structural diagram of a transistor in a source driving module provided in an embodiment of the present invention; [Diagram 3] FIG. 2 is a waveform diagram of measured EMI emissions for a prior art source drive module. [Figure 4] FIG. 13 is a waveform diagram of EMI emissions measured for a source drive module of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention. It is clear that the described embodiments are only some of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments that can be obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.

[0019] In the present invention, the terms "first", "second", "third", etc. are not used to describe a particular order, but are used to distinguish different objects. Furthermore, the terms "comprise" and "have" and any variations thereof are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or modules is not limited to the recited steps or modules, but may optionally further include unrecited steps or modules, or may optionally further include other steps or modules inherent to the process, method, product, or apparatus.

[0020] An "embodiment" referred to in this specification means that the features, structures, or characteristics described in connection with the embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various time positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is exclusive of other embodiments. Those skilled in the art will understand, both explicitly and implicitly, that the embodiments described in this specification may be combined with other embodiments.

[0021] In accordance with embodiments of the present invention, a display module is provided, and the display module includes, but is not limited to, the following embodiments and combinations of the following embodiments.

[0022] In one embodiment, as shown in FIG. 1, the display module 100 includes a display panel 10 including a plurality of pixel units, a power management module 201, and a source driving module 30 electrically connected to the plurality of pixel units and a control motherboard 20, where the display module 100 further includes a signal processing module 202 electrically connected to the source driving module 30 and the power management module 201, the signal processing module 202 is loaded with a first signal V1 generated by the power management module 201, and processes the first signal V1 into a second signal V2 that is loaded into the source driving module 30, and the energy of the second signal V2 is different from the energy of the first signal V1. In addition, the display module 100 may include a control motherboard 20 that may include the power management module 201, the source driving module 30 is disposed between the plurality of pixel units and the control motherboard 20, and the signal processing module 202 may be disposed on the control motherboard 20.

[0023] Here, the display panel 10 may include, but is not limited to, at least one of a liquid crystal display panel, an organic electroluminescence display panel, a light emitting diode display panel, a sub-millimeter light emitting diode display panel, and a micro light emitting diode display panel. Specifically, the source driving module 30 electrically connects a plurality of pixel units with the control motherboard 20, and the source driving module 30 can load a corresponding data signal Vdata to each sub-pixel 101 in each pixel unit under the control of the control motherboard 20 to control each pixel unit to display a corresponding color, thereby realizing the screen display of the display panel 10.

[0024] In addition, when the first signal V1 generated by the power management module 201 in the control motherboard 20 acts directly on the source driving module 30, the first signal V1 contains an AC signal with high energy. Combined with the device structure of the source driving module 30 itself, the energy of the signal within a certain frequency range transmitted within the source driving module 30 may still be relatively concentrated and high in energy, which is likely to cause EMI (Electromagnetic Interference) radiation and affect the normal operation of other systems or other subsystems within this system, thereby restricting and reducing the scope of use of the display module 100.

[0025] It should be understood that in this embodiment, a signal processing module 202 is provided, electrically connected to the source driving module 30 and the power management module 201, and the signal processing module 202 can process the first signal V1 generated by the power management module 201 into a second signal V2 loaded into the source driving module 30, and the energy of the second signal V2 is different from the energy of the first signal V1, that is, the signal processing module 202 can process the signal generated for the power management module 201 and loaded into the source driving module 30 to change its energy, thereby reducing the EMI radiation generated by at least the source driving module 30 due to the energy of the second signal V2 loaded into the source driving module 30, and avoiding limiting and reducing the use range of the display module 100.

[0026] Of course, the signal processing module 202 can also be reasonably configured to perform corresponding processing on the first signal V1 generated by the power management module 201 according to the energy demand of the signal required for the source driving module 30, and the magnitude relationship between the energy of the second signal V2 and the energy of the first signal V1 is not limited here, as long as they are different. Specifically, for example, when the energy of the signal within a certain frequency range transmitted in the source driving module 30 is relatively concentrated and large, that is, when the energy of the signal required for the source driving module 30 is small, the signal processing module 202 can be configured to adapt to the situation where the energy of the second signal V2 is smaller than the energy of the first signal V1; for example, when the energy of the signal within a certain frequency range transmitted in the source driving module 30 is small, that is, when the energy of the signal required for the source driving module 30 is large, the signal processing module 202 can be configured to adapt to the situation where the energy of the second signal V2 is larger than the energy of the first signal V1.

[0027] In one embodiment, as shown in FIG. 1, the first signal V1 includes a first sub-signal VAA and a second sub-signal VCC, the second signal V2 includes a third sub-signal VAA' and a fourth sub-signal VCC', and the signal processing module 202 includes a first sub-signal processing module 2021 to which the first sub-signal VAA generated by the power management module 201 is loaded and which processes the first sub-signal VAA into a third sub-signal VAA' which is loaded into the source driving module 30, the energy of the third sub-signal VAA' being smaller than the energy of the first sub-signal VAA, and a second sub-signal processing module 2022 to which the second sub-signal VCC generated by the power management module 201 is loaded and which processes the second sub-signal VCC into a fourth sub-signal VCC' which is loaded into the source driving module 30, the energy of the fourth sub-signal VCC' being smaller than the energy of the second sub-signal VCC.

[0028] In this embodiment, based on the first signal V1 including the first sub-signal VAA and the second sub-signal VCC, a first sub-signal processing module 2021 and a second sub-signal processing module 2022 are provided, which are respectively used to process the first sub-signal VAA and the second sub-signal VCC, and on the one hand, can perform corresponding processing according to the characteristics of different signals, and on the other hand, can perform corresponding processing according to the demands, including but not limited to the energy demands of each signal of the source driving module 30, so that the first sub-signal processing module 2021 processes the third sub-signal VAA' generated by the first sub-signal VAA and the second sub-signal processing module 2022 processes the fourth sub-signal VCC' generated by the second sub-signal VCC, which can respectively meet the demands of different devices of the source driving module 30, further improving the reliability of processing the first signal V1, and further expanding the scope of use of the display module 100.

[0029] In one embodiment, as shown in Fig. 1, the energy of the second sub-signal VCC is smaller than the energy of the first sub-signal VAA. Specifically, in conjunction with the above description, the first sub-signal processing module 2021 and the second sub-signal processing module 2022 can perform corresponding processing according to the characteristics of different signals, for example, in this embodiment, it can be further limited that the energy of a signal that can be processed by the first sub-signal processing module 2021 (e.g., the first sub-signal VAA) may be greater than the energy of a signal that can be processed by the second sub-signal processing module 2022 (e.g., the second sub-signal VCC).

[0030] It should be understood that when there is a difference or this difference is large between the energy of the second sub-signal VCC and the energy of the first sub-signal VAA, a first sub-signal processing module 2021 and a second sub-signal processing module 2022 are provided to process them respectively, thereby improving the reliability of the signal processing module 202 processing the first signal V1, and reducing the risk that the difference between the energy of the second sub-signal VCC and the energy of the first sub-signal VAA is too large to be processed simultaneously by the same sub-signal processing module, and therefore the energy of the output second sub-signal VCC cannot satisfy the source driving module 30.

[0031] In one embodiment, as shown in Fig. 1, the difference value between the energy of the third sub-signal VAA' and the energy of the first sub-signal VAA is greater than the difference value between the energy of the fourth sub-signal VCC' and the energy of the second sub-signal VCC. Specifically, in conjunction with the above description, the first sub-signal processing module 2021 and the second sub-signal processing module 2022 can perform corresponding processing according to the demands including but not limited to the energy demands of each signal of the source driving module 30, for example, in this embodiment, the ability of the first sub-signal processing module 2021 to change the energy of a signal (e.g., to process the energy of the first sub-signal VAA to the energy of the third sub-signal VAA') may be greater than the ability of the second sub-signal processing module 2022 to change the energy of a signal (e.g., to process the energy of the second sub-signal VCC to the energy of the fourth sub-signal VCC').

[0032] It should be understood that when there is a difference or a large difference between the difference value between the energy of the third sub-signal VAA' and the energy of the first sub-signal VAA and the difference value between the energy of the fourth sub-signal VCC' and the energy of the second sub-signal VCC, a first sub-signal processing module 2021 and a second sub-signal processing module 2022 are provided to process them respectively, and the same principle can be used to improve the reliability of the signal processing module 202 processing the first signal V1, and reduce the risk that the difference between the difference value between the energy of the third sub-signal VAA' and the energy of the first sub-signal VAA and the difference value between the energy of the fourth sub-signal VCC' and the energy of the second sub-signal VCC is too large to be processed simultaneously by the same sub-signal processing module, so that the energy of the output second sub-signal VCC cannot satisfy the source driving module 30.

[0033] Here, the first sub-signal processing module 2021 may include one of an impedance step-down circuit and a low-dropout linear regulator, and the second sub-signal processing module 2022 may include the other of the impedance step-down circuit and the low-dropout linear regulator. Specifically, as shown in FIG. 1, the first sub-signal processing module 2021 includes an impedance step-down circuit, and the second sub-signal processing module 2022 includes a low-dropout linear regulator.

[0034] Here, the impedance step-down circuit (included in the first sub-signal processing module 2021) may include at least one diode, for example, in FIG. 1, it may include a plurality of diodes connected in series. When the diode is turned on in the forward direction, the voltage drop across the diode is constant and almost unchanged. The forward voltage drop of different types of diodes is different, generally within the range of 0.5V to 0.7V. Therefore, the step-down of the impedance step-down circuit in this embodiment can be realized by connecting one diode or a plurality of diodes in series. However, in the impedance step-down circuit, the current flowing through each diode must not exceed its maximum forward current to avoid overcurrent destruction of the diode. Naturally, the impedance step-down circuit may include a resistor provided in parallel.

[0035] Specifically, the low dropout linear regulator, as a micro power consumption low dropout linear regulator, can usually have extremely low self-noise and high power supply rejection ratio, and the basic working principle is as follows: when the system is powered on and the enable pin is at high level, the circuit starts to start up, the constant current source circuit provides bias to the whole circuit, the reference power supply voltage is established quickly, the output continues to rise with the input, and just before the output reaches a predetermined value, the output feedback voltage obtained by the feedback network also approaches the reference voltage value, at this time, the error amplifier amplifies the signal with a small error between the output feedback voltage and the reference voltage, and then amplifies it to the output through the adjustment transistor, thereby forming a negative feedback, ensuring that the output voltage is stable at a predetermined value; by the same principle, when the input voltage changes or the output current changes, this closed loop keeps the output voltage constant, that is, Vout=(R1+R2) / R2×Vref, thereby realizing the output at a stable voltage.

[0036] In this embodiment, the first signal V1 and the second signal V2 can be understood as voltage signals, and in conjunction with the above description, the essence of the signal processing module 202 can be used to perform voltage conversion to perform step-up or step-down processing on the first signal V1 to obtain the second signal V2; furthermore, it should be noted that the second signal V2 can be loaded into the source driving module 30 to generate a different current signal compared to the first signal V1, thereby changing the magnitude of the current transmitted by the device in the source driving module 30, and in conjunction with the principle that magnetism is generated by electricity, the EMI radiation generated by the source driving module 30 can be changed (e.g., weakened).

[0037] In one embodiment, as shown in FIG. 1, the first sub-signal VAA is further used to generate a high voltage signal VGH for loading the GOA circuit of the display panel 10, and the second sub-signal VCC is further used to load the timing control module 203 of the control motherboard 20. Here, the control motherboard 20 may include a motherboard body 204 for mounting integrated circuits or chips such as a power management module 201 and a timing control module 203. Here, at least one of the GOA circuit and the source driving module 30 may be provided in the display panel 10 and may be electrically connected to the display panel 10 by a bonding manner (including but not limited to bonding), for example, the GOA circuit can cooperate with the source driving module 30 to control the sub-pixels 101 in multiple rows to be turned on sequentially, so as to sequentially load the data signals Vdata of the sub-pixels 101 in multiple rows to the corresponding sub-pixels 101 in multiple rows. Here, the GOA circuit, the source driving module 30 can both be electrically connected to the timing control module 203 to sequentially load the data signals Vdata of the sub-pixels of multiple rows into the corresponding sub-pixels 101 of multiple rows under the control of the timing control module 203.

[0038] Specifically, the first sub-signal VAA can generate a high voltage signal VGH by a DC-DC power module (including but not limited to a DC-DC power module), and the DC-DC power module can be provided on the motherboard body 204, for example, the DC-DC power module can be directly attached to the motherboard body 204. In addition, the power management module 201 can further generate other voltage signals different from the first signal V1, such as a low voltage signal VGL, by a DC-DC power module (including but not limited to a DC-DC power module), and the high voltage signal VGH and the low voltage signal VGL can both be loaded into the GOA circuit to realize driving for the GOA circuit. The second sub-signal VCC may include, but is not limited to, an image data signal Vdata, and after being loaded into the timing control module 203, it can undergo conversion by the timing control module 203 to generate a plurality of data signals Vdata and related control signals corresponding to the plurality of sub-pixels 101 mentioned above, and further, together with the third sub-signal VAA' loaded into the source driving module 30 mentioned above, it can control the source driving module 30 to transmit the corresponding plurality of data signals Vdata to the plurality of sub-pixels 101.

[0039] Here, the first sub-signal VAA includes an analog voltage signal, and the second sub-signal VCC includes a digital voltage signal. Specifically, the analog voltage signal (included in the first sub-signal VAA) may pass through an analog quantity collector (not limited to an analog quantity collector) to generate a corresponding digital voltage signal, or may be directly transmitted as an analog voltage signal, and this embodiment does not limit whether the third sub-signal VAA' is an analog voltage signal or a digital voltage signal. The digital voltage signal (included in the second sub-signal VCC) may pass through an analog quantity generator (not limited to an analog quantity generator) to generate a corresponding analog voltage signal, or may be directly transmitted as a digital voltage signal, and this embodiment does not limit whether the fourth sub-signal VCC' is an analog voltage signal or a digital voltage signal.

[0040] 1 and 2, the source driving module 30 includes a transistor 302, one of whose source S or drain D is grounded and whose gate G is electrically connected to the signal processing module 202, where the second signal V2 is a voltage signal, and the voltage magnitude of the gate G of the transistor 302 is correlated with the voltage magnitude corresponding to the second signal V2. Here, the transistor 302 may be a switch transistor.

[0041] Specifically, the source driving module 30 may include a plurality of sub-source driving modules 30, each of which is electrically connected to a corresponding plurality of columns of sub-pixels 101 to transmit a corresponding plurality of data signals Vdata, and each of which may include a plurality of transistors 302, and there is at least one transistor 302 as described above. Specifically, the current Id after the transistor 302 is turned on is expressed by the formula Id=1 / 2*β*(W / L)*(VGS-VTH) 2 (β is the AC current amplification coefficient of the transistor, which represents the current amplification capability of the transistor for an AC changing signal, “W / L” is the aspect ratio of the transistor, VGS is the voltage difference between the gate and source of the transistor, and VTH is the threshold voltage of the transistor), it can be seen that β, “W / L” and VTH are all constants, and it can be considered that the on-current Id of the transistor 302 exhibits a positive correlation with the voltage difference VGS between the gate and source of the transistor 302. Naturally, the magnitude of the voltage of the drain D of the transistor 302 may be related to the magnitude of the voltage corresponding to the second signal V2.

[0042] In this embodiment, the source S of the transistor 302 is grounded as an example, the gate G of the transistor 302 is electrically connected to the signal processing module 202, and the magnitude of the voltage of the gate G of the transistor 302 is positively correlated with the magnitude of the voltage corresponding to the second signal V2, that is, it can be understood that the on-current Id of the transistor 302 is correlated with the magnitude of the voltage corresponding to the second signal V2. As can be seen from the above description, the signal processing module 202 can be reasonably configured to perform corresponding processing on the first signal V1 generated by the power management module 201, for example, compared with the first signal V1, in this case, the second signal V2 is configured to be adapted to have an energy greater than that of the first signal V1 so that the second signal V2 acts on the sub-source driving module 30, so that the voltage difference VGS between the gate and source of the transistor 302 can be reduced to a certain extent, thereby reducing the on-current Id of the transistor 302, and combined with the principle that magnetism is generated by electricity, the EMI radiation generated by the source driving module 30 can be modified (for example, weakened).

[0043] Specifically, Figure 3 is a waveform diagram of EMI radiation measured for a source driving module in the prior art, and Figure 4 is a waveform diagram of EMI radiation measured for a source driving module in the present invention, where the abscissa represents time t, where there is no limit to the unit of time t, and the ordinate represents statistical numbers, with units in dB. Waveform L1 in Figures 3 and 4 is a critical waveform of EMI radiation, and when located above waveform L1, the EMI radiation is considered to be too large, and waveform L2 in Figures 3 and 4 is a waveform that is 6 dB smaller than the value of waveform L1.

[0044] It can be seen in FIG. 3 that in the prior art, since the signal processing module 202 is not provided, the energy of the signal loaded to the source driving module 30 is large, and the width value of the generated first EMI radiation waveform L3 is large, which even exceeds the waveform L2 as shown in FIG. 3, and the minimum distance with the waveform L1 is 1.62 dB, and the first EMI radiation waveform L3 is considered to be unqualified; in FIG. 4 that in the present invention, since the signal processing module 202 is provided, the energy of the signal loaded to the source driving module 30 is small, and the width value of the generated second EMI radiation waveform L4 is smaller than the width value of the first EMI radiation waveform L3; in FIG. 4, the second EMI radiation waveform L4 is located below the waveform L2, that is, the distance between the second EMI radiation waveform L4 and the waveform L1 is greater than 6 dB, and the second EMI radiation waveform L4 is considered to be qualified.

[0045] Specifically, in this embodiment, the source driving module 30 is electrically connected to the display panel 10 by a bonding method as an example. For example, as shown in FIG. 1, a plurality of sub source driving modules 30 spaced apart in the source driving module 30 can be connected to at least one side of the display panel 10, and a flexible flat cable 401 and a connection plate 402 can be provided between the source driving module 30 and the control motherboard 20, the flexible flat cable 401 is connected to the control motherboard 20 and the connection plate 402, a first pin 403 can be provided on the side of the connection plate 402 close to the flexible flat cable 401, and a second pin 404 can be provided on the side of the control motherboard 20 close to the flexible flat cable 401, and plugs at both ends of the flexible flat cable 401 can be electrically connected to the first pin 403 and the second pin 404, respectively, to realize the electrical connection between the control motherboard 20 and the connection plate 402, and a flexible printed circuit can be used to replace the flexible flat cable 401. Furthermore, the signal processing module 202 may be provided on a connection plate 402, and the side of the connection plate 402 closer to the source driving module 30 and the side of the source driving module 30 closer to the connection plate 402 can be electrically connected to each other by a pin connection method (not limited to the pin connection method).

[0046] An embodiment of the present invention provides an electronic terminal which may include any of the display modules described above.

[0047] The present invention provides a display module and its driving method, and provides a signal processing module electrically connected to a source driving module and a power management module. A first signal generated by the power management module is loaded, and the first signal is processed into a second signal loaded into the source driving module, thereby realizing that the energy of the second signal is different from the energy of the first signal. By rationally configuring the signal processing module, the second signal can be increased or decreased compared with the first signal, which can reduce the EMI radiation generated by the source driving module, or improve the problem of inaccurate signal transmission due to low energy, and effectively expand the application scope of the display module.

[0048] The above provides a detailed introduction to the display module and its driving method provided in the embodiments of the present invention. In this specification, specific examples are used to explain the principles and embodiments of the present invention. The description of the above embodiments is only intended to facilitate understanding of the technical solutions of the present invention and their core ideas. Those skilled in the art may still modify the technical solutions described in the above embodiments or equivalently replace some of the technical features thereof, and it should be understood that such modifications or replacements do not depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. a display panel including a plurality of pixel units; A power management module; a source driving module electrically connected with a plurality of the pixel units and a control motherboard; a signal processing module electrically connected between the source driving module and the power management module; The signal processing module is loaded with a first signal generated by the power management module, and processes the first signal into a second signal that is loaded into the source driving module, and increases or decreases the energy of the second signal compared to the energy of the first signal according to the signal energy demand required by the source driving module; A display module characterized by:

2. 2. The display module of claim 1, wherein the energy of the second signal is smaller than the energy of the first signal.

3. the first signal includes a first sub-signal and a second sub-signal, the second signal includes a third sub-signal and a fourth sub-signal; The signal processing module includes:

3. The display module of claim 2, further comprising a first sub-signal processing module to which a first sub-signal generated by the power management module is loaded and which processes the first sub-signal into a third sub-signal which is loaded into the source driving module, the energy of the third sub-signal being smaller than the energy of the first sub-signal.

4. The display module according to claim 3 , wherein a difference value between the energy of the third sub-signal and the energy of the first sub-signal is greater than a difference value between the energy of the fourth sub-signal and the energy of the second sub-signal.

5. 5. The display module according to claim 3, wherein the first sub-signal processing module includes one of an impedance step-down circuit and a low-dropout linear regulator.

6. The signal processing module further comprises: The display module of claim 5, further comprising a second sub-signal processing module, which is loaded with a second sub-signal generated by the power management module and processes the second sub-signal into a fourth sub-signal which is loaded into the source driving module, the energy of the fourth sub-signal being smaller than the energy of the second sub-signal.

7. 7. The display module according to claim 6, wherein the second sub-signal processing module includes the other of the impedance step-down circuit and the low-dropout linear regulator.

8. 5. A display module according to claim 3 or 4, characterized in that the first sub-signal comprises an analogue voltage signal and the second sub-signal comprises a digital voltage signal.

9. The source driving module includes: a transistor having a source or a drain that is grounded and a gate that is electrically connected to the signal processing module; 4. The display module according to claim 3, wherein the second signal is a voltage signal, and the magnitude of the voltage of the gate of the transistor is positively correlated with the magnitude of the voltage corresponding to the second signal.

10. A control motherboard including the power management module, the source driving module is disposed between a plurality of the pixel units and the control motherboard; wherein the signal processing module is provided on the control motherboard; or The display module described in claim 1, wherein a flexible flat cable and a connection plate are provided between the source driving module and the control motherboard, the flexible flat cable is connected to the control motherboard and the connection plate, and the signal processing module is provided on the connection plate.

11. An electronic terminal comprising the display module according to any one of claims 1 to 4 and 9 to 10.

Images