Display driving architecture, display driving method, and display device

Abstract

The present application provides a display driving architecture, a display method, and a display device. The display driving architecture drives a display panel, the display panel including a pixel unit, the pixel unit including a driving transistor and a light-emitting unit, a first end of the driving transistor connected to a first power supply end and a second end of the driving transistor connected to an anode of the light-emitting unit, and a cathode of the light-emitting unit connected to a second power supply end. The display driving architecture includes a switching module, the switching module including a first switching unit, a second switching unit, and a voltage output end, the first switching unit outputs a first voltage, the second switching unit outputs a second voltage, and the switching module outputs the first voltage to the voltage output end and the second voltage to the voltage output end. The present application reduces heat loss and power consumption of the driving transistor.

Description

[Technical Field]

[0001] The present disclosure relates to the technical field of display driving, and in particular to a display driving architecture, a display driving method, and a display device.

[0002] This disclosure claims priority to a Chinese application filed with the China Patent Office on December 20, 2022, bearing application number 2022116379309 and titled "Display driving architecture, display driving method, and display device," the entire contents of which are incorporated herein by reference. [Background technology]

[0003] In an OLED (Organic Light-Emitting Diode) display panel, a driving transistor is arranged to control whether the OLED is turned on or off. The current flowing through the driving transistor is the current flowing through the OLED. To vary the luminance of the OLED, different currents are passed by controlling the voltage difference between the gate and source of the driving transistor to achieve different resistance values.

[0004] For high-gradation displays, the voltage difference between the gate and source of the drive transistor is increased, reducing the resistance of the drive transistor to increase the current through the drive transistor and improve the luminance of the OLED grayscale, resulting in a high-gradation display. For low-gradation displays, the voltage difference between the gate and source of the drive transistor is reduced, increasing the resistance of the drive transistor to decrease the current through the drive transistor, resulting in a low-gradation display. However, for low-gradation displays, the resistance of the drive transistor is high, so the current corresponding to different luminance grayscales does not change. If the current does not change, the resistance increases, resulting in increased heat loss in the drive transistor and increased power consumption. Summary of the Invention [Problem to be solved by the invention]

[0005] The present disclosure provides a display driving architecture, a display driving method, and a display device that can reduce heat loss of a driving transistor and reduce power consumption. [Means for solving the problem]

[0006] According to an aspect of the present disclosure, there is provided a display driving architecture configured to drive a display panel, the display panel including a pixel unit, the pixel unit including a driving transistor and a light-emitting unit, a first end of the driving transistor being connected to a first power supply end and a second end being connected to an anode of the light-emitting unit, and a cathode of the light-emitting unit being connected to a second power supply end; the display driving architecture includes a switching module; The switching module includes a first switching unit, a second switching unit, and a voltage output terminal, the first switching unit and the second switching unit are respectively connected to the voltage output terminal, the voltage output terminal is connected to the first power supply terminal or the second power supply terminal, the first switching unit is configured to output a first voltage, and the second switching unit is configured to output a second voltage, the switching module outputs the first voltage to the voltage output terminal according to high gray scale data of the pixel unit, or outputs the second voltage to the voltage output terminal according to low gray scale data of the pixel unit, the first voltage is higher than the second voltage; When the switching module outputs the second voltage, the current flowing through the driving transistor corresponds to the low grayscale data of the pixel unit, the resistance value of the driving transistor is reduced, and the heat generation and power consumption of the driving transistor is reduced.

[0007] The present application further provides a display driving method for driving a display panel, the display panel including a pixel unit, the pixel unit including a driving transistor and a light-emitting unit, a first end of the driving transistor connected to a first power supply end and a second end connected to an anode of the light-emitting unit, and a cathode of the light-emitting unit connected to a second power supply end, the display driving method including: obtaining gray scale data of the pixel unit, the gray scale data including high gray scale data and low gray scale data; and outputting a first voltage to the first power supply end or the second power supply end based on the high gray scale data, or outputting a second voltage to the first power supply end or the second power supply end based on the low gray scale data, wherein when the second voltage is output, a current flowing through the driving transistor corresponds to the low gray scale data of the pixel unit, thereby reducing the resistance of the driving transistor and reducing the heat and power consumption of the driving transistor.

[0008] The present application further provides a display device including a display panel and the display driving architecture, wherein the display device further includes a power supply module, the power supply module being respectively connected to the first switching unit and the second switching unit, the power supply module being used to supply the first voltage to the first switching unit and the second voltage to the second switching unit.

[0009] In the technical solution of the present application, the high gray scale display corresponds to high gray scale data, and when the lighting brightness of the light emitting unit is high, the switching module outputs a first voltage to the voltage output terminal according to the high gray scale data of the pixel unit, when the voltage difference between the gate and source of the driving transistor is large, the resistance value of the driving transistor is low, and in combination with the first voltage, the current of the driving transistor is high, so that the high gray scale display of the light emitting unit is realized.

[0010] A low gray scale display corresponds to low gray scale data, and when the lighting brightness of the light emitting unit is low, the switching module outputs a second voltage to the voltage output terminal based on the low gray scale data of the pixel unit. At this time, if the voltage difference between the gate and source of the driving transistor is maintained at a large value, i.e., the resistance value of the driving transistor is ensured to be small, the voltage difference between the source and drain of the driving transistor is reduced by outputting the second voltage, thereby reducing the current of the driving transistor and realizing a low gray scale display. In this way, by reducing the current of the driving transistor, the present application can realize a low gray scale display, and also reduce the resistance of the driving transistor, reducing heat loss of the driving transistor and reducing power consumption.

[0011] It is to be understood that the foregoing general description and the following detailed description are exemplary only and are not intended to be limiting of the present disclosure. [Brief explanation of the drawings]

[0012] The above and other objects, features and advantages of the present disclosure will become more apparent from the detailed description of illustrative embodiments thereof, taken in conjunction with the accompanying drawings. [Figure 1] FIG. 1 is a schematic structural diagram of a display driving architecture in a first embodiment of the present disclosure. [Figure 2] 1 is a schematic structural diagram of a display pixel in the present disclosure; [Figure 3] 10 is a schematic flowchart of steps of a display driving method according to a second embodiment of the present disclosure. [Figure 4] 10 is a detailed schematic flowchart of step S10 of the display driving method according to the present disclosure. [Figure 5] 10 is a detailed schematic flowchart of step S20 of the display driving method according to the present disclosure. [Figure 6] FIG. 10 is a schematic structural diagram of a display device according to a third embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0013] While the present disclosure may readily be embodied in different embodiments, it will be understood, however, that this specification is to be considered as an illustrative illustration of the principles of the disclosure and is not intended to limit the disclosure to that described herein, only some of the specific embodiments of which are shown in the drawings and described in detail herein.

[0014] Therefore, a feature pointed out in this specification is intended to exemplify one of the features of one embodiment of the present disclosure and is not intended to suggest that every embodiment of the present disclosure must have the exemplified feature. In addition, it should be noted that many features are described herein. While certain features may be combined to illustrate possible system designs, these features may also be used in other unspecified combinations. Therefore, the described combinations are not intended to be limiting unless otherwise specified.

[0015] In the embodiments illustrated in the drawings, directional designations (up, down, left, right, front, rear, etc.) are used to describe the relative, rather than absolute, structure and movement of various elements of the present disclosure. These designations are appropriate when these elements are disposed in the positions shown in the drawings. If the description of the positions of these elements changes, these directional designations will change accordingly.

[0016] Next, exemplary embodiments will be described in more detail with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various forms and should not be understood to be limited to the examples described herein. Rather, these exemplary embodiments are provided so that the description of the present disclosure will be more comprehensive and complete and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. The accompanying drawings are merely schematic diagrams of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings indicate the same or similar parts, and therefore repeated description thereof will be omitted.

[0017] Preferred embodiments of the present disclosure are described in more detail below in conjunction with the accompanying drawings herein.

[0018] Embodiment 1 1 and 2, the present disclosure discloses a display driving architecture 20. The technical solution of the present disclosure can be applied to a display panel having a light-emitting diode (LED) or an organic light-emitting diode (OLED).

[0019] The display panel 10 includes a pixel unit 110, which includes a driving transistor T0 (Thin Film Transistor, TFT) and a light-emitting unit 111, which is an LED or an OLED. The driving transistor T0 has a first end connected to a first power supply end 112, a second end connected to an anode of the light-emitting unit 111, and a cathode connected to a second power supply end 113. In general, the first power supply end 112 supplies an operating voltage, such as ELVDD, of the light-emitting unit 111, and the second power supply end 113 is connected to a common end, such as a common ground end ELVSS, of the light-emitting unit 111. The current of the light-emitting unit 111 flows from the anode of the light-emitting unit 111 to the cathode of the light-emitting unit 111.

[0020] The display driving architecture 20 includes a switching module 210, which includes a first switching unit 211, a second switching unit 212, and a voltage output end 213. The first switching unit 211 and the second switching unit 212 are respectively connected to the voltage output end 213. The voltage output end 213 is connected to the first power supply end 112 or the second power supply end 113, and power is supplied to the pixel unit 110 by the voltage output end 213. The first switching unit 211 is configured to output a first voltage, and the second switching unit 212 is configured to output a second voltage. The switching module 210 outputs the first voltage to the voltage output end 213 according to high gray scale data of the pixel unit 110, or outputs the second voltage to the voltage output end 213 according to low gray scale data of the pixel unit 110, where the first voltage is higher than the second voltage.

[0021] To achieve high gray scale display, the pixel unit 110 generates high gray scale data in advance, and the switching module 210 outputs a first voltage to the voltage output terminal 213 through the first switching unit 211 based on the high gray scale data. The driving transistor T0 has a control end, a first end, and a second end. Generally, the control end refers to the gate of the driving transistor T0, the first end refers to the drain, and the second end refers to the source. Of course, the first end may refer to the source and the second end may refer to the drain. To control the current of the driving transistor T0, the voltage difference between the gate and source of the driving transistor T0 is increased. Generally, increasing the gate voltage increases the voltage difference between the gate and source, thereby increasing the turn-on degree of the driving transistor T0 and reducing the channel resistance. The voltage difference between the drain and source determines the magnitude of the current flowing through the driving transistor T0. When the first voltage is high and the first voltage is applied to the drain, the voltage difference between the drain and source increases, resulting in a larger current. That is, the current flowing through the light-emitting unit 111 increases, the light-emitting unit 111 becomes brighter, and a high-gradation display is completed.

[0022] When performing a low gray scale display, the pixel unit 110 generates low gray scale data in advance, and the switching module 210 outputs a second voltage to the voltage output terminal 213 through the second switching unit 212 based on the low gray scale data. The current corresponding to the low gray scale display is reduced. Applying the second voltage to the drain reduces the voltage difference between the drain and source, thereby reducing the current. That is, the current flowing through the light-emitting unit 111 is reduced, and the brightness of the light-emitting unit 111 is reduced, thereby achieving a low gray scale display. In this case, the gate voltage of the driving transistor T0 is maintained at a high value, so the voltage difference between the gate and source is maintained at a high value. As a result, the driving transistor T0 is turned on more strongly and the channel resistance formed is reduced. The current flowing through the driving transistor T0 corresponds to the low gray scale data of the pixel unit 110, i.e., the low gray scale current corresponding to the display of the light-emitting unit 111 is ensured to be constant. Therefore, the resistance value of the driving transistor T0 is reduced, and the heat dissipation and power consumption of the driving transistor T0 are reduced.

[0023] Here, Q represents the heat dissipation power of the drive transistor, I represents the voltage flowing through the drive transistor T0, and R represents the channel resistance of the drive transistor T0, i.e., the resistance value. This is explained using the equation Q=I*I*R, and it can be seen that if the current I does not change and R decreases, the heat dissipation power decreases.

[0024] In the technical solution of this embodiment, when the high gray scale display corresponds to the high gray scale data and the lighting brightness of the light emitting unit 111 increases, the switching module 210 outputs a first voltage to the voltage output terminal 213 according to the high gray scale data of the pixel unit 110. When the voltage difference between the gate and source of the driving transistor T0 increases, the resistance of the driving transistor T0 decreases, and under the combined action of the first voltage, the current of the driving transistor T0 increases, so that the high gray scale display of the light emitting unit 111 is realized.

[0025] A low gray scale display corresponds to low gray scale data. When the lighting brightness of the light-emitting unit 111 decreases, the switching module 210 outputs a second voltage to the voltage output terminal 213 according to the low gray scale data of the pixel unit 110. At this time, if the voltage difference between the gate and source of the driving transistor T0 is maintained at a larger value, i.e., if the resistance of the driving transistor T0 is ensured to be smaller, the voltage difference between the source and drain of the driving transistor T0 is reduced through the output of the second voltage, thereby reducing the current of the driving transistor T0 and realizing a low gray scale display. From this, it can be seen that the present disclosure not only realizes a low gray scale display by reducing the current of the driving transistor T0, but also reliably reduces the resistance of the driving transistor T0, thereby reducing the heat loss of the driving transistor T0 and reducing power consumption.

[0026] Furthermore, the resistance of the driving transistor T0 is affected by the voltage difference between the gate and source, the larger the voltage difference, the smaller the resistance, and the smaller the voltage difference, the larger the resistance. The current flowing through the driving transistor T0 is affected by the voltage difference between the drain and source, the larger the voltage difference, the larger the current, and the smaller the voltage difference, the smaller the current. The technical solution of the present disclosure adjusts the voltage difference between the drain and source to realize a low gray scale display when the resistance is small.

[0027] To effectively switch the first voltage and the second voltage, the first switching unit 211 includes a first control switch T1 and a first power supply connecting end 2110. The first voltage is input to the first switching unit 211 through the first power supply connecting end 2110. The first control switch T1 has a first end connected to the first power connecting end 2110 and a second end connected to the voltage output end 213. The control end of the first control switch T1 supplies the first voltage of the first power connecting end 2110 to the voltage output end 213 in response to a first control signal. After the high gray scale data is generated, a first control signal is generated based on the high gray scale data. After the control end of the first control switch T1 receives the first control signal, the first end and the second end of the first control switch T1 are turned on, and the first voltage is output from the first end to the second end, and the second end is connected to the voltage output end 213. Therefore, the first voltage is output to the first power supply end 112 or the second power supply end 113 of the pixel unit 110 by the voltage output end 213 .

[0028] The second switching unit 212 includes a second control switch T2 and a second power connecting end 2120. The second control switch T2 has a first end connected to the second power connecting end 2120 and a second end connected to the voltage output end 213. The control end of the second control switch T2 responds to a second control signal to provide a second voltage at the second power connecting end 2120 to the voltage output end 213. After the low gray scale data is generated, a second control signal is generated based on the low gray scale data. After the control end of the second control switch T2 receives the second control signal, the first and second ends of the second control switch T2 are turned on, and the second voltage is output from the first end to the second end, and the second end is connected to the voltage output end 213. Therefore, the second voltage is output to the first power supply end 112 or the second power supply end 113 of the pixel unit 110 by the voltage output end 213. The first control switch T1 and the second control switch T2 are TFTs such as N-type TFTs, and when the first control signal is high and the second control signal is low, the first control switch T1 is turned on, and when the first control signal is low and the second control signal is high, the second control switch T2 is turned on.

[0029] To more effectively control the operation of the switching module 210, the switching module 210 further includes a first data line 214, a first scan line 215, and a second scan line 216. The first data line 214 extends vertically, the first scan line 215 and the second scan line 216 extend horizontally, and the first scan line 215 is configured to control the first switching unit 211, and the second scan line 216 is configured to control the second switching unit 212.

[0030] The first switching unit 211 further includes a third control switch T3 and a first capacitor C1, the third control switch T3 has a control end connected to the first scan line 215, a first end connected to the first data line 214, and a second end connected to the first electrode plate of the first capacitor C1, the second electrode plate of the first capacitor C1 connected to the line between the first control switch T1 and the first power supply connection end 2110, and the control end of the first control switch T1 connected to the line between the third control switch T3 and the first capacitor C1.

[0031] In a high-gray-scale display, the first scan line 215 transmits a high level, and the second scan line 216 transmits a low level. The third control switch T3 is an N-type TFT. After the control end of the third control switch T3 receives a high-level signal, the first and second ends of the third control switch T3 are turned on. When a signal from the first data line 214 transmits a first control signal to the first control switch T1, the first control switch T1 is also turned on, and a first voltage is transmitted to the voltage output end 213. The first capacitor C1 can be charged through the first data line 214 and can store electricity, so that the first control switch T1 can be kept turned on within a certain period of time, ensuring that the first voltage is continuously applied to the driving transistor T0, and maintaining the lighting state of the light-emitting unit 111.

[0032] The second switching unit 212 further includes a fourth control switch T4 and a second capacitor C2, the control end of the fourth control switch T4 is connected to the second scan line 216, the first end is connected to the first data line 214, and the second end is connected to the first electrode plate of the second capacitor C2, the second electrode plate of the second capacitor C2 is connected to the line between the second control switch T2 and the second power supply connection end 2120, and the control end of the second control switch T2 is connected to the line between the fourth control switch T4 and the second capacitor C2.

[0033] For a low grayscale display, the first scan line 215 transmits a low level, and the second scan line 216 transmits a high level. The fourth control switch T4 is an N-type TFT. When the control end of the fourth control switch T4 receives a high-level signal, the first and second ends of the fourth control switch T4 are turned on. When the signal from the first data line 214 transmits a second control signal to the second control switch T2, the second control switch T2 is also turned on, and a second voltage is transmitted to the voltage output end 213. The second capacitor C2 can be charged through the first data line 214 and store electricity, so that the second control switch T2 can be kept turned on within a certain period of time, ensuring that the second voltage is continuously applied to the driving transistor T0 and maintaining the lighting state of the light-emitting unit 111. Of course, the control switch may also be a P-type TFT that is turned on in response to a low level.

[0034] It will be appreciated that the first data line 214 is configured to provide a first control signal and a second control signal, which are the same control signal and are both high level signals.

[0035] The display panel 10 includes a transparent substrate, and the pixel unit 110 is disposed on the surface of the transparent substrate. The pixel unit 110 includes a second data line 114, a third scan line 115, a response switch T5, and a storage capacitor C. The response switch T5 has a control end connected to the third scan line 115, a first end connected to the second data line 114, and a second end connected to a first electrode of the storage capacitor C, the second electrode of which is connected to a line between the driving transistor T0 and the first power supply end 112, and the control end of the driving transistor T0 is connected to the line between the response switch T5 and the storage capacitor C.

[0036] When the pixel unit 110 performs normal display, the third scan line 115 provides a high level signal, the control end of the response switch T5 responds to the high level signal, and the first and second ends of the response switch T5 are turned on, the second data line 114 provides a high level signal to the control end of the driving transistor T0, and the driving transistor T0 responds to the high level signal, and the first and second ends of the driving transistor T0 are turned on, so that the voltage output by the switching module 210 is applied to the first end of the driving transistor T0 to light up the light-emitting unit 111. In addition, the storage capacitor C is charged via the second data line 114, and the driving transistor T0 is maintained in an on state by the storage capacitor C, ensuring that the light-emitting unit 111 is turned on within a certain time.

[0037] To reduce light blocking, the first data line 214 is located within the orthogonal projection of the second data line 114 on the transparent substrate. Therefore, the addition of the first data line 214 does not block additional light emitted by the light-emitting unit 111. Furthermore, the structural layout is simplified, and structural space can be fully utilized. The first data line 214 and the second data line 114 may be the same data line. In other words, the data signal from the switching module 210 is the same as the data signal from the pixel unit 110. When the pixel unit 110 is lit, the corresponding display driving architecture 20 needs to output a corresponding voltage, so that the pixel unit 110 and the display driving architecture 20 can receive the data signal synchronously.

[0038] Furthermore, by separating the first data line 214 from the second data line 114, the control of the switching module 210 and the pixel unit 110 can be made more flexible.

[0039] Furthermore, to further reduce light blocking, the first scan line 215 is located within the orthogonal projection of one third scan line 115 on the transparent substrate, and the second scan line 216 is located within the orthogonal projection of another third scan line 115 on the transparent substrate, so that the scan lines and data lines of the display driving architecture 20 are located within the orthogonal projection of the scan lines and data lines of the pixel units 110, respectively, without additionally blocking light.

[0040] To improve the switching control efficiency, the display panel 10 includes multiple pixel groups, each of which includes at least two pixel units 110, and the pixel units 110 in the same pixel group are all connected to the voltage output terminal 213 of the same switching module 210. In other words, one switching module 210 can simultaneously control the brightness of two pixel units 110, thereby improving the control efficiency.

[0041] Of course, there may be more than one pixel unit 110 to be controlled, for example, five pixel units 110 horizontally and three pixel units 110 vertically, so that one pixel group includes 15 pixel units 110. One switching module 210 controls the voltage magnitudes of the 15 pixel units 110 simultaneously.

[0042] 6, the display driving architecture 20 further includes a timing control module 220 and a driving module 230. The timing control module 220 is connected to the driving module 230, and the driving module 230 is connected to the switching module 210.

[0043] The timing control module 220 is configured to obtain the high gray scale data or the low gray scale data of the pixel unit 110, generate a first driving instruction according to the high gray scale data, and generate a second driving instruction according to the low gray scale data. Whether the pixel unit 110 displays a high gray scale or a low gray scale is controlled by the gray scale data input by the signal source 240. The signal source 240 transmits the gray scale data to the timing control module 220, and the gray scale data already includes the high gray scale data and the low gray scale data. The timing control module 220 generates corresponding driving instructions according to different data contents. That is, the timing control module generates the first driving instruction according to the high gray scale data and the second driving instruction according to the low gray scale data.

[0044] The driving module 230 is connected to the timing control module 220, and the driving module 230 receives a first driving instruction or a second driving instruction, and controls the switching module 210 to output a first voltage based on the first driving instruction, and controls the switching module 210 to output a second voltage based on the second driving instruction.

[0045] Specifically, the driving module 230 can be understood as a driving chip. After receiving a first driving instruction, the driving chip outputs a high level to the first data line 214, a high level to the first scan line 215, and a low level to the second scan line 216. Through the high level from the first scan line 215, the third control switch T3 is turned on, and when the high level from the first data line 214 is output to the control end of the first control switch T1, the first control switch T1 is turned on, and a first voltage is output to the voltage output end 213.

[0046] After receiving the second driving instruction, the driving chip outputs a high level to the first data line 214, a low level to the first scan line 215, and a high level to the second scan line 216. Through the high level from the second scan line 216, the fourth control switch T4 is turned on, and when the high level from the first data line 214 is output to the control end of the second control switch T2, the second control switch T2 is turned on, and a second voltage is output to the voltage output end 213.

[0047] Embodiment 2 As shown in FIG. 3 , the present disclosure further provides a display driving method for driving a display panel 10, where the display panel 10 includes a pixel unit 110, the pixel unit 110 includes a driving transistor T0 and a light-emitting unit 111, where the driving transistor T0 has a first end connected to a first power supply end 112 and a second end connected to an anode of the light-emitting unit 111, and a cathode of the light-emitting unit 111 connected to a second power supply end 113, and the display driving method includes: Step S10: Obtain the gray scale data of the pixel unit 110, which includes high gray scale data and low gray scale data, input the gray scale data via the signal source 240, and identify the high gray scale data and the low gray scale data in the gray scale data.

[0048] Step S20: Based on the high gradation data, a first voltage is output to the first power supply terminal 112 or the second power supply terminal 113, and based on the low gradation data, a second voltage is output to the first power supply terminal 112 or the second power supply terminal 113.

[0049] If the data is high gray scale data, the timing control module 220 generates a first driving instruction based on the high gray scale data and transmits the first driving instruction to the driving module 230. The driving module 230 outputs a high level to the first data line 214, a high level to the first scan line 215, and a low level to the second scan line 216 based on the first driving instruction. The fourth control switch T4 is turned off in response to the low level. When the high level from the first scan line 215 is received, the third control switch T3 is turned on. When the high level from the first data line 214 is received at the control end of the first control switch T1, the first control switch T1 is turned on, and a first voltage is output to the voltage output end 213. The first voltage may be output to the first power supply end 112 or the second power supply end 113. In other words, by adjusting the drain voltage of the driving transistor T0, the effect of adjusting the voltage difference between the drain and the source can be achieved. The effect of adjusting the voltage difference between the drain and the source can also be achieved by adjusting the source voltage of the driving transistor T0.

[0050] If the data is low gray scale data, the timing control module 220 generates a second driving instruction based on the low gray scale data and transmits the second driving instruction to the driving module 230. The driving module 230 outputs a high level to the first data line 214, a low level to the first scan line 215, and a high level to the second scan line 216 based on the second driving instruction. The third control switch T3 is turned off in response to the low level. When the high level from the second scan line 216 is received, the fourth control switch T4 is turned on. When the high level from the first data line 214 is output to the control end of the second control switch T2, the second control switch T2 is turned on, and a second voltage is output to the voltage output end 213. The second voltage may be output to the first power supply end 112 or the second power supply end 113.

[0051] When the second voltage is output, the current flowing through the driving transistor T0 corresponds to the low gray scale data of the pixel unit 110, reducing the resistance of the driving transistor T0 and reducing the heat dissipation of the driving transistor T0. Specifically, the current corresponding to the low gray scale display is reduced, and the application of the second voltage to the drain reduces the voltage difference between the drain and source, thereby reducing the current. This reduces the current flowing through the light-emitting unit 111 and reduces the brightness of the light-emitting unit 111, thereby completing the low gray scale display. In this case, the gate voltage of the driving transistor T0 is maintained high, thereby maintaining a high voltage difference between the gate and source, thereby increasing the turn-on degree of the driving transistor T0 and reducing the channel resistance formed. The current flowing through the driving transistor T0 corresponds to the low gray scale data of the pixel unit 110, i.e., ensuring that the low gray scale current corresponding to the display of the light-emitting unit 111 is constant. Therefore, the resistance value of the driving transistor T0 is reduced, thereby reducing the heat dissipation of the driving transistor T0.

[0052] As shown in FIG. 4 , the step of obtaining the high gray level data of the pixel unit 110 or the low gray level data of the pixel unit 110 includes: Step S110: obtain the gray scale data of the pixel unit 110, and compare the gray scale data of the pixel unit 110 with the preset gray scale, where the gray scale data ranges from 0 to 255, where 0 represents pure black and 255 represents pure white, and the data between 0 and 255 represents a transition from pure black to pure white.

[0053] Step S120: If the gray scale data of the pixel unit 110 is greater than the preset gray scale, determine that the gray scale data is high gray scale data. After obtaining the gray scale data, recognize and determine whether the gray scale data belongs to high gray scale data. The preset gray scale is, for example, 127. If the gray scale data is 200, which is greater than 127, determine that the gray scale data is high gray scale data.

[0054] Step S130: If the gray scale data of the pixel unit 110 is smaller than or equal to the preset gray scale, it is determined that the gray scale data is low gray scale data. If the gray scale data is 120, which is less than 127, it is determined that the gray scale data is low gray scale data. The preset gray scale data may be adjusted, for example, so that the preset gray scale is 120, 150, or 200.

[0055] 5, some positions of the pixel units 110 of the display panel 10 are too bright or too dark. To reduce this situation, after obtaining the gray level data of the pixel units 110, the following steps are included: Step S210: Scan the luminance of the pixel unit 110 to obtain the display grayscale of the pixel unit 110, and compare the grayscale data with the display grayscale. The grayscale data can be understood as a brightness instruction provided to the pixel unit 110, and the display grayscale can be understood as the true brightness of the pixel unit 110. Whether the display brightness complies with the provided brightness instruction can be determined by comparing the grayscale data with the display grayscale.

[0056] Step S220: If the gray scale data of the pixel unit 110 is greater than the display gray scale, a first voltage is supplied to the pixel unit 110; if the gray scale data of the pixel unit 110 is greater than the display gray scale, it indicates that the brightness of the pixel unit 110 is too low, and at this time, a first voltage is supplied to the pixel unit 110 to increase the brightness of the light-emitting unit 111 in the pixel unit 110.

[0057] Step S230: If the gray scale data of the pixel unit 110 is equal to or smaller than the display gray scale, a second voltage is supplied to the pixel unit 110. If the gray scale data of the pixel unit 110 is equal to or smaller than the display gray scale, it indicates that the brightness of the pixel unit 110 is too high, and at this time, a second voltage is supplied to the pixel unit 110 to reduce the brightness of the light-emitting unit 111 in the pixel unit 110.

[0058] Furthermore, the display panel 10 may suffer from screen burn-in, which refers to the phenomenon that, when the display panel 10 is left as a static screen for a long time, the pixel units 110 lose power and the brightness of the screen attenuates rapidly, and when the image is switched, residual shadows appear at the positions of some of the pixel units 110. By switching between the first voltage and the second voltage, the situation in which the pixel units 110 remain at a certain operating voltage for a long time can be reduced, thereby alleviating screen burn-in and extending the life of the display panel 10.

[0059] Embodiment 3 6 , the present disclosure further provides a display device 1, including a display panel 10, the above-mentioned display driving architecture 20, and a power supply circuit 30 connected to a first switching unit 211 and a second switching unit 212, respectively, and configured to supply a first voltage to the first switching unit 211 and a second voltage to the second switching unit 212. Through switching between the first switching unit 211 and the second switching unit 212, the first voltage or the second voltage is supplied to a voltage output terminal 213.

[0060] While the present disclosure has been described with reference to certain exemplary embodiments, it should be understood that the terms used are exemplary and illustrative, and not limiting. Since the present disclosure may be embodied in various forms without departing from the spirit or essence of the invention, it should be understood that the foregoing embodiments are not limited to any of the foregoing details, but should be broadly construed within the spirit and scope defined by the appended claims, and that all variations and modifications that come within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. 1. A display driving architecture configured to drive a display panel, comprising: The display panel includes a pixel unit, the pixel unit includes a driving transistor and a light-emitting unit, a first end of the driving transistor is connected to a first power supply end, a second end of the driving transistor is connected to an anode of the light-emitting unit, and a cathode of the light-emitting unit is connected to a second power supply end; the display driving architecture includes a switching module; the switching module includes a first switching unit, a second switching unit, and a voltage output terminal, the first switching unit and the second switching unit are respectively connected to the voltage output terminal, the voltage output terminal is connected to the first power supply terminal or the second power supply terminal, the first switching unit is configured to output a first voltage, the second switching unit is configured to output a second voltage, the switching module outputs the first voltage to the voltage output terminal according to high gray scale data of the pixel unit, or outputs the second voltage to the voltage output terminal according to low gray scale data of the pixel unit, the first voltage is higher than the second voltage; When the switching module outputs the second voltage, the current flowing through the driving transistor corresponds to the low gray level data of the pixel unit, the resistance value of the driving transistor is reduced, and the heat dissipation power of the driving transistor is reduced. A display driving architecture comprising:

2. the first switching unit includes a first control switch and a first power supply connection terminal, the first control switch having a first terminal connected to the first power supply connection terminal and a second terminal connected to the voltage output terminal, the control terminal of the first control switch supplying a first voltage of the first power supply connection terminal to the voltage output terminal in response to a first control signal; The second switching unit includes a second control switch and a second power supply connection terminal, the second control switch having a first terminal connected to the second power supply connection terminal and a second terminal connected to the voltage output terminal, and the control terminal of the second control switch supplies a second voltage of the second power supply connection terminal to the voltage output terminal in response to a second control signal.

2. The display driving architecture of claim 1.

3. The switching module further includes a first data line, a first scan line, and a second scan line; the first switching unit further includes a third control switch and a first capacitor, the third control switch having a control end connected to the first scan line, a first end connected to the first data line, and a second end connected to a first electrode plate of the first capacitor, the second electrode plate of the first capacitor connected to a line between the first control switch and the first power supply connection end, and a control end of the first control switch connected to a line between the third control switch and the first capacitor; The second switching unit further includes a fourth control switch and a second capacitor, the fourth control switch having a control end connected to a second scan line, a first end connected to a first data line, and a second end connected to a first electrode plate of a second capacitor, the second electrode plate of the second capacitor being connected to a line between the second control switch and the second power supply connection end, and the control end of the second control switch being connected to a line between the fourth control switch and the second capacitor.

3. The display driving architecture of claim 2.

4. The display panel includes a transparent substrate, and the pixel unit is disposed on a surface of the transparent substrate, and the pixel unit includes a second data line, a third scan line, a response switch, and a storage capacitor, and the response switch has a control end connected to the third scan line, a first end connected to the second data line, and a second end connected to a first electrode of the storage capacitor, the second electrode of the storage capacitor being connected to a line between the driving transistor and the first power supply end, and a control end of the driving transistor being connected to a line between the response switch and the storage capacitor; The first data line is located within an orthogonal projection of the second data line on the transparent substrate, or the first data line and the second data line are the same data line.

4. The display driving architecture of claim 3.

5. The first control switch and the second control switch are N-type TFTs.

3. The display driving architecture of claim 2.

6. The display panel includes a plurality of pixel groups, each of which includes at least two of the pixel units, and the pixel units in the same pixel group are connected to the voltage output terminal of the same switching module.

2. The display driving architecture of claim 1.

7. a timing control module configured to obtain high gradation data or low gradation data of the pixel unit, generate a first driving instruction according to the high gradation data, and generate a second driving instruction according to the low gradation data; a driving module connected to the timing control module, receiving the first driving instruction or the second driving instruction, and controlling the switching module to output the first voltage according to the first driving instruction, and controlling the switching module to output the second voltage according to the second driving instruction.

2. The display driving architecture of claim 1.

8. A display driving method for driving a display panel, comprising: The display panel includes a pixel unit, the pixel unit includes a driving transistor and a light-emitting unit, a first end of the driving transistor is connected to a first power supply end, a second end of the driving transistor is connected to an anode of the light-emitting unit, and a cathode of the light-emitting unit is connected to a second power supply end; The display driving method includes: obtaining gray level data of the pixel unit, the gray level data including high gray level data and low gray level data; outputting a first voltage to the first power supply terminal or the second power supply terminal based on the high gradation data, or outputting a second voltage to the first power supply terminal or the second power supply terminal based on the low gradation data, When the second voltage is output, the current flowing through the driving transistor corresponds to the low grayscale data of the pixel unit, the resistance of the driving transistor is reduced, and the heat dissipation power of the driving transistor is reduced. A display driving method comprising:

9. The step of obtaining high gray level data or low gray level data of the pixel unit includes: obtaining gray scale data of the pixel unit and comparing the gray scale data of the pixel unit with a preset gray scale; If the gray scale data of the pixel unit is greater than a preset gray scale, determining the gray scale data as high gray scale data; If the gray scale data of the pixel unit is smaller than or equal to the preset gray scale, determining the gray scale data as low gray scale data.

9. The display driving method according to claim 8.

10. After the step of obtaining the gray level data of the pixel unit, Scanning the luminance of the pixel unit to obtain a display gray scale of the pixel unit, and comparing the gray scale data with the display gray scale; If the grayscale data of the pixel unit is greater than the display grayscale, supplying a first voltage to the pixel unit; If the grayscale data of the pixel unit is smaller than or equal to the display grayscale, supplying a second voltage to the pixel unit.

9. The display driving method according to claim 8.

11. A display device including a display panel and a display driving architecture, The display driving architecture is configured to drive a display panel, the display panel including a pixel unit, the pixel unit including a driving transistor and a light-emitting unit, a first end of the driving transistor is connected to a first power supply end, a second end of the driving transistor is connected to an anode of the light-emitting unit, and a cathode of the light-emitting unit is connected to a second power supply end; The display driving architecture includes a switching module, the switching module including a first switching unit, a second switching unit, and a voltage output terminal, the first switching unit and the second switching unit are respectively connected to the voltage output terminal, the voltage output terminal is connected to the first power supply terminal or the second power supply terminal, the first switching unit is configured to output a first voltage, the second switching unit is configured to output a second voltage, the switching module outputs the first voltage to the voltage output terminal according to high gray scale data of the pixel unit, or outputs the second voltage to the voltage output terminal according to low gray scale data of the pixel unit, the first voltage is higher than the second voltage; When the switching module outputs the second voltage, the current flowing through the driving transistor corresponds to the low grayscale data of the pixel unit, the resistance value of the driving transistor is reduced, and the heat consumption power of the driving transistor is reduced; The display device further includes a power supply module connected to the first switching unit and the second switching unit, respectively, configured to supply the first voltage to the first switching unit and the second voltage to the second switching unit. A display device characterized by:

12. the first switching unit includes a first control switch and a first power supply connection terminal, the first control switch having a first terminal connected to the first power supply connection terminal and a second terminal connected to the voltage output terminal, the control terminal of the first control switch supplying a first voltage of the first power supply connection terminal to the voltage output terminal in response to a first control signal; The second switching unit includes a second control switch and a second power supply connection terminal, the second control switch having a first terminal connected to the second power supply connection terminal and a second terminal connected to the voltage output terminal, and the control terminal of the second control switch supplies a second voltage of the second power supply connection terminal to the voltage output terminal in response to a second control signal.

12. The display device according to claim 11.

13. The switching module further includes a first data line, a first scan line, and a second scan line; the first switching unit further includes a third control switch and a first capacitor, the third control switch having a control end connected to the first scan line, a first end connected to the first data line, and a second end connected to a first electrode plate of the first capacitor, the second electrode plate of the first capacitor connected to a line between the first control switch and the first power supply connection end, and a control end of the first control switch connected to a line between the third control switch and the first capacitor; The second switching unit further includes a fourth control switch and a second capacitor, the fourth control switch having a control end connected to a second scan line, a first end connected to a first data line, and a second end connected to a first electrode plate of a second capacitor, the second electrode plate of the second capacitor being connected to a line between the second control switch and the second power supply connection end, and the control end of the second control switch being connected to a line between the fourth control switch and the second capacitor.

13. The display device according to claim 12.

14. The display panel includes a transparent substrate, and the pixel unit is disposed on a surface of the transparent substrate, and the pixel unit includes a second data line, a third scan line, a response switch, and a storage capacitor, and the response switch has a control end connected to the third scan line, a first end connected to the second data line, and a second end connected to a first electrode of the storage capacitor, the second electrode of the storage capacitor being connected to a line between the driving transistor and the first power supply end, and a control end of the driving transistor being connected to a line between the response switch and the storage capacitor; The first data line is located within an orthogonal projection of the second data line on the transparent substrate, or the first data line and the second data line are the same data line.

14. The display device according to claim 13.

15. The first control switch and the second control switch are N-type TFTs.

13. The display device according to claim 12.

16. The display panel includes a plurality of pixel groups, each of which includes at least two of the pixel units, and the pixel units in the same pixel group are connected to the voltage output terminal of the same switching module.

12. The display device according to claim 11.

17. a timing control module configured to obtain high gradation data or low gradation data of the pixel unit, generate a first driving instruction according to the high gradation data, and generate a second driving instruction according to the low gradation data; a driving module connected to the timing control module, receiving the first driving instruction or the second driving instruction, and controlling the switching module to output the first voltage according to the first driving instruction, and controlling the switching module to output the second voltage according to the second driving instruction.

12. The display device according to claim 11.

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